Portable multi-display device

Portable multi-display device

Technical field

The present invention relates to a portable multi-display device, in particular to a portable multi-display device having a main panel shell and an auxiliary panel shell each with a display screen, and a coupling device. The panel shells are separated and interconnected by the connecting device.

Background technique

The method of using at least two display screens to realize a large-size screen has been used for large-size display devices. Generally, portable display devices use flat-panel displays. LCD (liquid crystal display), FED (field emission display), PDP (plasma display panel), EL (electroluminescence) are commonly used flat-panel displays.

In recent years, due to the addition of new functions such as wireless Internet to portable display devices, a display device with a large screen is required. However, such a large-sized portable display has a problem in terms of mobility due to its overall size. In order to overcome this problem, a foldable multi-display device has been proposed.

In a foldable multi-display device, two or more display screens can be foldable and interconnected, but they cannot be separated. In other words, the separation and connection of the display screen cannot be flexibly realized. For example, it is impossible for the user to carry only one display screen, thereby destroying the inherent characteristics of the mobility and convenience of the portable display device.

Summary of the invention

Therefore, the purpose of the present invention is to try to solve the above-mentioned problems.

An object of the present invention is to provide a portable multi-display device having a main panel housing and an auxiliary panel housing with a display screen. The two panel housings are designed to be separated and connected to each other. When the panel housings are interconnected, the display panel The boundary range is minimal, making the display look like a screen.

In order to achieve the above-mentioned object, the portable multi-display device provided by the present invention includes a main panel housing with a first display; an auxiliary panel housing with a second display; and coupling the main panel housing and the auxiliary panel housing to make the first display and A coupling device capable of contacting at least one side of the second display.

The side part of the main body panel housing and the side part of the first display are placed on the same plane.

A detachable flip cover is formed on the main body panel shell and the flip cover is provided with input keys. The flip cover may be formed as a foldable type.

When the main panel housing and the auxiliary panel housing are coupled, at least one of the main display screen and the auxiliary display screen slides to the other display screen and is arranged adjacent to it.

The auxiliary panel housing includes an external coupling device that can couple electronic equipment. The electronic equipment includes a desktop monitor on which an auxiliary panel housing can be coupled by an external coupling device.

The main body panel housing may further include an auxiliary display that can be seen even when the flip cover covers the main body panel.

The auxiliary panel housing can be stacked on the front or rear of the main panel housing, and the coupling device is formed on the front or rear of the two panel housings.

Description of the drawings

Fig. 1 is a view showing a portable multi-display device according to an embodiment of the present invention; Fig. 2 is a view showing a connectable auxiliary panel housing; Fig. 3 is a view of the portable multi-display device when two panel housings are connected; 4 is a view showing that the portable display device of the present invention is connected to other information equipment; FIG. 5 is a view showing the separated structure of the flip cover; FIG. 6 is a view showing a portable multi-display device according to another embodiment of the present invention; 7 is another example of the connection state of the panel housing; Figs. 8a and 8b are views showing the protection device of the main panel housing; Figs. 9a and 9b are views showing the protection device of the auxiliary panel housing; Fig. 10 is a view showing the clamshell housing space Figure 11 is a cross-sectional view of the panel housing connected to each other; Figures 12a and 12b are views showing the rear of the protective flip; Figures 13a and 13b are views showing another example of the coupling protrusion and coupling groove of the protective flip; 14a and 14b are views showing another example of the protection device; FIGS. 15a and 15b are views showing another example of the protection device; FIG. 16 is a view showing a method of protecting the connection device of the panel housing from moisture; FIG. 17 It is a view showing that an opening is provided on the side part of the main body panel housing; Figure 18 is a view showing a method of fixing the display screen on the panel housing; Figures 19a and 19b are views showing the installation of the display screen on the housing; Figure 20 is A view showing another installation example of the display screen; Figures 21a and 21b are views showing that a protective film is provided on the side of the panel housing; Figure 22 is a plan view showing when the display screen is fixed on the panel housing by a fixing member; Figure 23 Is a cross-sectional view showing a state when two display screens are arranged adjacent to each other; FIG. 24 is a block diagram showing a drive structure of the display device of the present invention; FIG. 25 is a drive control process for a display screen according to a preferred embodiment of the present invention 26a and 26b are views showing a portable multi-display device according to another embodiment of the present invention; Fig. 27 is a view showing a main body panel housing provided with a fixing device; Fig. 28a is a view showing a fixing device provided A view of the auxiliary panel housing; Fig. 28b is an enlarged view showing the locking device in Fig. 28a; Figs. 29a and 29b are views showing another example of the fixing device; Figs. 30a and 30b are views explaining the convex fixing device; 31a and 31b are views explaining the stepped fixing device; FIG. 32 is a view showing a portable multi-display device according to another embodiment of the present invention; FIGS. 33a to 34 are views showing that the screen increases when the display screen is sliding; 35aAnd 35b are views showing the upper and lower panel housings; Figs. 36a and 36b are views showing another example of the sliding device; Figs. 37 to 39b are Pasteur's portable multi-display device according to another embodiment of the present invention Figures 40a and 40b are views showing an example in which three or more display screens are stacked on top of each other; Figure 41 is a view showing the state before other expansion devices are coupled to the main panel housing;

42a and 42b are views showing the state when the protective flip cover and the side flap are unfolded; FIG. 43 is a view showing the state when the expansion device is coupled to the main body and the main body panel housing; FIG. 44 is a block diagram showing the state when the expansion device is coupled ; Figures 45a and 45b are views showing an example in which an expansion device is connected to the back of the main body.

detailed description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

The present invention provides a portable multi-display device having at least two flat display screens connected adjacent to each other to produce a large screen effect. As the flat display panel, LCD, FED, PDP, electric paper, etc. can be used.

Embodiment 1 Fig. 1 shows the portable multi-display device of the present invention.

As shown in the figure, the multi-display device of the present invention includes a main body panel housing 20 and a display screen 2. You can also set up an antenna capable of transmitting and receiving information. The display screen 2 is designed so that it can be extended to one side of the main body panel housing 20.

In addition, the main body panel housing 20 is provided with a pair of coupling devices 22 and 22' on one of its side walls. The main body panel housing 20 may be coupled to the auxiliary panel housing through a coupling device.

The multi-display device also includes a flip cover 100 for covering the display screen 2. An input key 110 is provided on the outer surface of the flip cover 100 with a flip window 100a, so that when the flip cover 100 covers the display screen 2, a part of the display screen can be seen through the flip window 100a. The flip cover 100 is designed to cover the side wall of the display screen. The dotted line in FIG. 1 shows the state when the flip cover 100 covers the display screen.

Figure 2 shows an auxiliary panel housing that can be coupled to the main panel housing.

As shown in the figure, the auxiliary panel housing 40 that can be coupled to the main panel housing 20 is provided with a pair of coupling devices 44 and 44 for coupling to the main panel housing 20. The coupling devices 44 and 44 are designed to be able to protrude outward through the rod 42 and be inserted into the panel housing 40.

Fig. 3 shows a view in which the main body panel housing is coupled to the auxiliary panel housing.

As shown in FIG. 3, when the main body panel housing 20 is coupled to the auxiliary panel housing 40, the first and second display screens 2 and 4 are in contact with each other. As a result, the boundary between the display screens 2 and 4 is the smallest, so the two display screens 2 and 4 are driven as if one display screen.

In addition, the flip coupling device used to connect the flip 100 to the main panel housing 20 has a rotating shaft with a convex and concave structure so that the flip 100 can be removed from the main panel housing 20.

The panel housing 40 can also be provided with an external coupling device 33 for connecting another information device. As shown in FIG. 4, the display device of the present invention can be coupled to the top of a monitor 300 as another information device through an external coupling device 33. Needless to say, what is installed on the top of the monitor 300 is a coupling device for detachably coupling with external information equipment.

Figure 5 shows the removal structure of the flip cover.

As shown in the figure, the rotating shaft used to connect the flip cover 100 and the panel housing 20 includes a protruding rotating shaft 102 and a cap rotating shaft 101. In order to couple the flip cover 100 to the panel housing 20, the cap shaft 101 covers the protruding shaft 102. The cap rotation shaft 101 and the protruding rotation shaft 102 are designed to be circular so that they can rotate when they are coupled.

Fig. 6 shows another example of the display device of the present invention.

In this example, the portable display device includes a main body panel housing 20 and an auxiliary panel housing 40. After the main body and the auxiliary panel housings 20 and 40 are coupled, one of the first and second display screens 2 and 4 slides so that the first and second display screens 2 and 4 are arranged adjacent to one side of them. The main body panel housing 20 is provided with a sliding groove 28, and the first display screen 2 is provided with a protruding part (not shown) so that the first display screen 2 can slide along the sliding groove 28.

Fig. 7 shows another example of the coupling state of the panel housing.

In this example, the auxiliary panel housing 40 is stacked on the front or back of the main panel housing 20. That is, as shown in FIG. 7, formed on the front of the auxiliary panel housing 40 is a coupling groove 48 that couples the auxiliary panel housing 40 to the back of the main panel housing 20. Although this part is omitted in the figure for convenience of description, a coupling protrusion for coupling to the coupling groove 48 of the auxiliary panel housing 40 is formed on the back of the main panel housing 20.

Embodiment 2 As shown in FIG. 1, when the main panel housing 20 and the auxiliary panel housing 40 are removed, the side parts of the display screens 2 and 4 are exposed on one side of the panel housings 20 and 40. In this embodiment, in order to protect the exposed sides of the display screens 2 and 4, protective devices are provided on the sides of the panel housings 20 and 40.

8a and 8b show the protection device of the main body panel housing 20, wherein FIG. 8a shows the state when the protective flip 23 is folded, and FIG. 8b shows the state when the protective flip 23 is unfolded. The protective flip covers 23 and 43 are used as protective devices in this embodiment.

The protective flip 23 of the main body panel housing 20 is designed to be foldable. The protective flip 23 can be separated into two rotating shaft parts. The flip cover rotating shaft 23 a is kept synchronized with the protective flip cover 23, and the panel housing rotating shaft 23 b is fixed on the panel housing 20.

A handle 26 formed in a strip-shaped groove is formed on the protective flip 23 to facilitate opening and closing of the protective flip 23. In addition, when the protective flip 23 is unfolded on the main body panel housing 20, the coupling protrusion 25 on the protective flip 23 is interlocked with the coupling groove 21 on the main body panel casing, so that the protective flip 23 can be safely coupled to the main body panel casing. 20 on.

In addition, the flip accommodating space 27 is defined on the side of the main panel housing 20 where the protective flip 23 is provided, so as to accommodate the protective flip 43 on the auxiliary panel housing 40. The panel housing 20 is also formed with coupling devices 22 and 22 for coupling to the auxiliary panel housing 40.

9a and 9b show the protection device of the auxiliary panel housing 40, wherein Fig. 9a is the state when the protective flip 43 of the auxiliary panel housing 40 is unfolded, and Fig. 9b is the state when the protective flip 43 is folded.

The protective flip 43 of the auxiliary panel housing 40 is also provided with a groove-shaped handle 46, and the panel housing 40 is provided with a coupling groove 41. In addition, formed at the lower end of the auxiliary panel housing 40 is a flip accommodating space 47 for accommodating the protective flip 23 of the main panel housing 20. The flip rotating shaft 43 a of the protective flip 43 is synchronized with the protective flip 43, and the panel casing rotating shaft 43 b is fixed on the panel casing 40.

Figure 10 shows the clamshell receiving space in more detail.

The clamshell accommodating space may be defined on the side of the panel housing as shown in FIG. 8b or at the lower end of the panel housing as shown in FIG. 10. The flip accommodating space 47 is provided with a guide rail 47a along which the protective flip 23 of the main body panel housing 20 can slide.

Figure 11 shows the coupling state of the panel housing.

Various parts 29 and 49 such as CPU and circuit board are provided in the panel housing.

The protective flip 23 of the main panel housing 20 is contained in the flip accommodating space 47 defined on the auxiliary panel casing 40, and the protective flip 43 of the auxiliary panel casing 40 is contained in the flip accommodating space 27 of the main panel casing 20.

In addition, this embodiment embodies an example with two panel shells, and three or more panel shells can also be provided.

Figures 12a and 12b show cross-sectional views of the protective flip 23 and 43, wherein Figure 12a is the state when the protective flip is folded, and Figure 12b is the state when the protective flip is unfolded.

In this example, a hook device is provided to prevent the panel housings 20 and 40 from bending more than 90° when the protective flip covers 23 and 43 are unfolded. As a hooking device, the cross section of one of the flip hinges 23a and 43a is at right angles. In addition, when the protective flip covers 23 and 43 are folded, the protective flip covers 23 and 43 are designed to be higher than the surface of the display screens 2 and 4 when the protective flip covers 23 and 43 are folded, thereby enhancing the protective effect of the display screens 2 and 4.

Figures 13a and 13b show another example of the coupling protrusions and coupling grooves of the protective flip, wherein Figure 13a shows the coupling protrusions 25 and 45 with a concave structure, and Figure 13b shows the locking device.

In this example, the coupling protrusions 25 and 45 are designed into a concave structure, and the coupling grooves 21 and 41 are provided with locking devices 21a and 41a. The coupling protrusions 25 and 45 are fixed by the elastic force of the locking devices 21a and 41a.

Figures 14a and 14b show another example of a protection device. The protective flip covers 23 and 43 are designed to protect the exposed sides of the display screens 2 and 4 when they are folded, and to be located at the lower end of the panel housing when they are unfolded.

Fig. 14a shows the folded state of the protective flaps 23 and 43, and Fig. 14b shows the unfolded state. As shown in the figure, the protective devices 23 and 43 are formed in a drawer type so that the protective flip covers 23 and 43 are drawn out from or contained in the bottom end of the panel housing.

The protective flip covers 23 and 43 should be designed so that when they are accommodated in the flip accommodating spaces 27 and 47, they can be gently positioned inside the extension lines on the sides of the panel housings 20 and 40. That is, when two panel housings are coupled through their adjacent side surfaces contacting each other, the protective flip covers 23 and 43 should not affect their coupling.

Figures 15a and 15b show another example of a protection device.

In this example, the protection devices 23 and 43 are mounted on the pivot and located at the bottom end of the panel housing. That is, when the protective flip covers 23 and 43 are unfolded, they abut against the bottom end of the panel shell. The protective flip covers 23 and 43 are designed to be pivotable by more than 270° so that they can be attached to the bottom ends of the panel housings 20 and 40.

In addition, in order to protect the pivot operation of the flip covers 23 and 43, panel housing shafts 23b and 43b connected to the panel housing and flip cover shafts 23a and 43a connected to the protective flip cover are also provided. When the protective flip covers 23 and 43 are attached to the bottom end of the panel housing, the protective flip covers 23 and 43 and the rotating shaft are positioned inside the extension lines of the side surfaces of the panel housings 20 and 40.

Figure 16 shows a method of preventing the coupling device of the panel housing from getting wet.

As shown in the figure, the rectangular grooves of the coupling devices 22 and 22' provided on the main panel housing 20 are fitted with elastic sealing caps 22b and 22b'. Here, the elastic sealing caps 22b and 22b' may be made of an elastic material such as rubber. The elastic sealing caps 22b and 22b' are assembled in a convex shape to enhance the sealing effect and reduce its volume. Therefore, when the protective flip 23 or the auxiliary panel housing 40 is attached to the side of the main body panel housing 20, a sealing effect of protecting the coupling device from moisture can be obtained. In addition, sealing caps 22b and 22b' can be provided on the protective flip cover 23 and the auxiliary panel housing 40 in the same manner.

Embodiment 3 The portable multi-display device of the present invention is provided with an opening on its side to facilitate the installation of the display screen on the panel housing. The display screen is installed on the side of the panel housing formed with the opening.

Figure 17 shows a main body panel housing with an opening.

As shown in the figure, the panel flip 24 is detachably coupled to the upper end of the main body panel housing 20. An opening is formed on the side surface 20b of the main body panel housing 20 provided with the joint portion 2'. The display screen 2 and the display driving circuit 2a are arranged on the side surface 20b provided with the opening. In addition, the other side 20a of the panel housing is equipped with a display bracket 10 for fixing and supporting the display screen 2. The bottom end of the main body panel housing 20 is provided with a bottom end bracket 12 for supporting the main body circuit board 2b.

Figure 18 shows a method of fixing the display screen on the panel housing.

The chassis 16 provided with a fixing member 16b for fixing the chassis 16 and the display screen 2 to the main body panel housing 20 encloses the display screen 2. When the chassis 16 is fixed, the panel flip 24 covers the non-display area of the display screen 2. As a result, the display screen 2 is installed in the opening formed on the side surface of the panel housing 20 provided with the coupling devices 22 and 22', and the display screen 2 is exposed through the opening.

Figures 19a and 19b show the display screen mounted on the chassis.

As shown in FIG. 19a, the display screen 2 and the display driving circuit 2a are installed in the chassis 16 together. Although omitted in the figure, a backlight system can also be installed in the chassis 16.

Figure 19b is a cross-sectional view of 19a. A display assembly having a display screen 2, a display driving circuit 2a and a backlight system 2c is installed in the chassis 16. The integrated chassis 16 surrounds the display assembly. The integrated chassis 16 is not a separate housing, but is divided into a housing and a cover and assembled into a single unit by screws. The chassis 16 may be made of plastic, metal plate, or aluminum plate.

In addition, the chassis 16 encloses one side of the display screen 2 only at the portion having the joint portion 2', so that when the two display screens are driven, the connecting portion is minimized, as if a display screen connected to each other.

Fig. 20 shows another example of the installation of the display screen.

In this example, the display screen 2 and the display driving circuit 2a are mounted on a disc-shaped bracket 17 mounted on the panel housing 20. The bracket 17 is provided with a fixing protrusion 17b for fixing the panel housing 20 thereof.

The bracket 17 shown in FIG. 20 is rectangular, and the present invention is not limited to this. That is, the bracket 17 is not limited to a rectangular shape.

Figures 21a and 21b show a panel housing provided with a side protection film.

Fig. 21a is a schematic diagram of a panel housing 20 having a side protection film 20c. For ease of description, other parts are omitted here and only the panel housing 20 is shown. In Figure 21a, the opening is indicated by a dashed line.

The side protection film 20c is made of a different material from the panel housing 20, such as a thin resin film, a plastic film, or a thin metal plate. The thickness of the side protection film 20c is preferably less than 1 mm.

FIG. 21b is a cross-sectional view of the panel housing 20 with the side protection film 20c. The side protection film 20c is arranged on the side 20b of the panel housing 20 with a joint to protect the display screen 2 exposed through the panel housing 20. Various components and a main circuit board 29 are also loaded on the panel housing 20. In addition, the display assembly is loaded on the bracket 17 and located at the upper end of the side portion 20b of the panel housing having the joint portion 2'.

Fig. 22 shows a top view of the panel housing to which the display screen is fixed by the fixing protrusion. The manner of arranging the connecting portion 2'of the display screen 2 on the extension line of the side 20b with the joint of the panel housing 20 is described. It can be considered to change the extension line within a range of ±1 mm.

In addition, a protective plate or protective film may be provided to protect the side of the display screen 2. Therefore, the side surface of the main body panel housing 20 and the side surface of the protective plate or film may be located on the same line.

As shown in FIG. 22, the display screen 2 can be removed through the opening on the panel housing 20. Therefore, in the present invention, a fixing member 16b fixed to the hook device 20d of the panel housing 20 is provided.

In FIG. 22, the fixing member 16b is a convex type, but the present invention is not limited to this. That is, the fixing member 16b may be formed as a screw type fixed to the panel housing 20. In this case, the hook is formed on the screw groove.

As shown in FIG. 22, the distance k from the side of the display screen of the joint portion 2'to the fixing member 16b is equal to the distance from the side 20b of the panel housing to the hook device 20d.

Fig. 23 is a cross-sectional view illustrating two display screens contacting each other on one of their sides.

The LCD, which is a flat display screen, includes upper and lower substrates 15 and 15a arranged opposite to each other. The base bodies 15 and 15a are coated with transparent electrodes 19. In addition, a liquid crystal layer 15b is arranged between the transparent electrodes 19. Polarizers 15' and 15a' are attached to the outer surface of the base bodies 15 and 15a. If the flat display is EL, only one substrate can be provided.

As shown in Fig. 23, the upper and lower bases 15 and 15a are assembled together and sealed by sealing layers 24a and 24b. Here, the sealing layer 24a of the joint portion 2'is arranged adjacent to the pixel electrode 19.

The minimum width of the sealing layer 24a of the joint portion 2'should be designed to be smaller than, for example, 0.8 mm. The side protective film 20c is attached around the joint part seal 24a (when the chassis 16 surrounds the display screen, the chassis 16 has the function of the side protective film 20c). At this time, the thickness of the side protective film 20c is preferably less than 0.8 mm. Therefore, in the present invention, when two or more display screens are merged into one display screen by being adjacent to each other, the joint part as a non-display area becomes less than 3.2 mm, thereby providing a display with two adjacent display screens. Screen effect.

Embodiment 4 When the main body panel casing 20 is coupled to the auxiliary panel casing 40, the coupling detection sensor of the main body panel casing 20 detects the protruding sensor of the auxiliary panel casing 40, and then the CPU placed in the main body panel casing 20 automatically detects the panels 20 and 40 The coupling state.

FIG. 24 is a block diagram illustrating the display driving of the display device of the present invention in a state where the main panel housing 20 and the auxiliary panel housing 40 are coupled.

In the multi-display device of the present invention, a storage device such as a memory is provided in the auxiliary panel housing 40 to enhance the function of the main body panel housing 20. Here, the storage device equipped on the auxiliary panel housing 40 is coupled with the CPU of the main panel housing 20 through a circuit.

In the figure, the CPU 200 is a control device for controlling the overall operation of the multi-display device of the present invention. The ROM 210 controls the display operation program, the RAM 220 stores data generated when the program is operated, and the EEP ROM 230 stores data required by the user and required for processing the data.

The R/F part 240 is a radio frequency that is synchronized with the RF channel, amplifies the input sound signal, and converts the RF signal received from the antenna into an intermediate frequency signal. The input part 250 includes numeric keys, menu keys, and selection keys. That is, the keys 110 in FIG. 1, the input keys 110 in FIG. 26 b, and the touch panel that can be equipped on the display screen can generally be represented by the input part 250.

There are display drive circuits 2a and 4a that drive the display screen through the output of the CPU 200, and the first and second display screens 2 and 4 (installed in the main body) are used to display information on the screen through the output signal of the display drive circuit. The display screen on the panel housing 20 is the first display screen, and the display screen installed on the auxiliary panel housing 40 is the second display screen). The second driving circuit 4a and the second display screen 4 are coupled with the CPU 200 through coupling devices 22 and 22'.

The coupling detection device 22 a detects whether the main panel housing 20 is coupled to the auxiliary panel housing 40. When the panel housing is coupled, the coupling detection sensor 22a detects the protrusion sensor 44a and sends the detected signal to the CPU 200. That is, in the loop open state, when the coupling detection sensor 22a contacts the protruding sensor 44a, it closes the loop to generate current. As the coupling detection sensor 22a, various sensors, such as a light sensor, can be selected.

FIG. 25 shows a flowchart for explaining a driving control method of a display screen according to a preferred embodiment of the present invention. The flowchart shows that when the main body panel housing 20 is coupled to or separated from the auxiliary panel housing 40, it is used to selectively drive the first and the second provided on the main body panel housing 20 and the auxiliary panel housing 40, respectively. The control process of display 2 and 4.

When the user turns on the power, the radio frequency signal received from the antenna is transmitted to the CPU 200 through the R/F part 240. In addition, when a specific function is set through the input part 250, the CPU 200 executes the specific function and outputs a signal for driving the display screens 2 and 4 to the display screen drive circuits 2a and 4a. In addition, the coupling detection sensor 22a detects whether the main panel housing 20 is coupled to the auxiliary panel housing 40, and sends a corresponding signal to the CPU 200.

The flowchart shown in FIG. 25 will be described below based on the above-mentioned circuit.

It is determined whether the power is turned on (S310). When the power is turned on, the CPU 200 uses the coupling detection sensor 22a to determine whether the panel housing is coupled (S312). That is, it is determined whether the main body panel housing 20 is coupled with the auxiliary panel housing 40.

After the panel housings are coupled with each other, it is determined whether the single display mode or the simple mode is selected (S314). The selection of the single display mode or the simple mode is done through the input part 250. That is, the single display mode or the simple mode enables the user to select one of the first and second display screens 2 and 4 when simple functions such as calculation functions or pocket functions are required. In addition, when performing complex functions like the Internet, two display screens are required.

When one of the single display mode and the simple mode is selected through the input part 250, the selection state is output from the input part 250 to the CPU 200. When neither the single display mode nor the simple mode is selected, all the display screens are driven (S316).

In addition, when the CPU 200 detects from the coupling detection sensor 22a that the panel housings are not coupled to each other, only the first display screen is driven. When only one of the modes is selected, only the first display screen is driven (S318).

Here, driving the first display screen does not mean simply driving one display screen, but it means that the display mode is different from the case where both display screens are driven. For example, the display mode used for simple pocket functions or sending e-mails is different from the complex mode used for the Internet or graphics. That is, the display mode or design is different from the case of driving two display screens.

Although not shown in the block diagram, when the display screen is an LCD, since the power supply of the backlight system can be selectively cut off, the user can selectively supply power to the backlight system.

Embodiment 5 FIGS. 26a and 26b show another embodiment of the multi-display device of the present invention.

As shown in FIG. 26a, an auxiliary display screen 2d is provided on the main body panel housing 20. As shown in FIG. The auxiliary display 2d can be seen even when the flip 100 is folded. That is, the flip cover 100 is provided with a window 100a on the flip cover. In addition, the main body panel housing 20 is provided with a flip sensor 100b to detect whether the flip is folded.

Figure 26b shows the flip 100 folded. The input key 110 is formed on the outer surface of the flip cover 100, and even when the flip cover 100 is folded, the auxiliary display screen 2d can be seen through the flip cover window 100a.

Therefore, when the flip cover 100 is folded, the CPU 200 detects that the flip cover 100 is folded through the flip sensor 100b to drive the auxiliary display 2d. The method of operation is similar to that described in Figures 24 and 25.

In this embodiment, although only two panel housings are taken as an example for convenience, the same method can be adopted even when three or more panel housings are provided.

Embodiment 6 When the panel housings 20 and 40 are only coupled by the coupling devices 22, 22', 44, and 44', the mechanical reliability will be damaged. Therefore, in this embodiment, the panel housing is equipped with fixing devices 30 and 30' formed in the protruding part to enhance the reliability of the mechanical coupling.

Fig. 27 shows a main body panel housing provided with a fixing device.

The main body panel housing 20 is provided with fixing devices 30 and 30' inserted into the auxiliary panel housing 40 to ensure the coupling state of the panel housing.

The fixing devices 30 and 30 can be inserted into or protruded from the main body panel housing 20 through the rod 42. That is, the fixing device and the coupling device 22 are operated by a single lever 42 at the same time. The fixing device 30' and the coupling device 22' can also be inserted into or protruded from the main body panel housing 20 through a separate rod 42' (installed opposite to the rod 42, omitted in the figure).

As shown in FIG. 27, the fixing devices 30 and 30' are installed on the peripheral side wall of the main body panel housing 20 in a protruding wall shape. In addition, the fixing devices 30 and 30' are provided with a locking groove 30a so as to function as a locking device when the main panel housing 20 and the auxiliary panel housing 40 are coupled.

In addition, a protection device 23 is also provided (see the dotted line in the figure). As shown in FIG. 27, the protection device 23 is provided inside the fixing devices 30 and 30'. That is, the protection device 23 is installed on the panel housing 20 so as not to cover and obstruct the fixing devices 30 and 30'.

Fig. 28a shows an auxiliary panel housing provided with a fixing device, and Fig. 28b shows an enlarged view of the locking device in Fig. 28a.

As shown in FIG. 28a, the auxiliary panel housing 40 is provided with fixing grooves 50 and 50', and the fixing devices 30 and 30' on the main panel housing 20 are inserted into the fixing grooves 50 and 50'.

The auxiliary panel housing 40 is also provided with a locking device 51. As shown in Fig. 28b, the locking device 51 includes a locking button 51a, a locking lever 51b, and a locking protrusion 51c.

Therefore, when the main body panel housing 20 and the auxiliary panel housing 40 are coupled to each other, the locking protrusion 51c is coupled to the locking groove 30a, thereby realizing a locking structure. In addition, when the lock button 51a is pushed, the lock protrusion 51c moves upward on the basis of the lock lever 51b. In addition, a locking device 51' having the same function as the locking device 51 is also provided on the opposite side of the locking device 51. Therefore, in order to complete the separation of the main body panel housing 20 and the auxiliary panel housing 40 from each other, all the buttons provided on the locking devices 51 and 51' should be pushed.

Here, the main panel housing 20 is pushed away from the auxiliary panel housing 40 by the elastic devices 52 and 52', thereby releasing the coupling state between the main panel housing 20 and the auxiliary panel housing 40.

Similarly, a protective device for protecting the side of the display screen exposed through the panel housing 40 (the dotted line in the figure) can also be provided.

Figures 29a and 29b show another example of a fixing device.

As shown in FIG. 29a, rectangular projections as the fixing devices 30 and 30' are formed around the coupling devices 22 and 22' formed in a needle shape. As shown in Fig. 29b, the auxiliary panel housing 40 is provided with groove-type coupling devices 44 and 44' and fixing grooves 50 and 50' on its side.

Figures 30a and 30b show a convex type fixing device, in which Figure 30a shows the main panel housing, and Figure 30b shows the auxiliary panel housing.

In order to provide stability, four fixing devices 30 and 30' are provided in the peripheral part. Four fixing grooves 50 and 50' corresponding to the fixing device are provided on the outer part of the auxiliary panel housing 40.

In addition, the coupling surface of the main body panel housing 20 is provided with a shock absorbing device 31 that protects the display screen when the panel housing is coupled and separated. That is, a longitudinal groove is formed on the side of the main body panel housing 20, and a shock absorbing device 31 such as a sponge is provided on the longitudinal groove. The shock absorbing device 31 can rise from the surface of the panel housing 20, but when an external force acts on it, it shrinks to the same height as the surface of the panel housing. Therefore, the shock absorbing device 31 is made of sponge or rubber so as to be able to reduce its volume when subjected to pressure. In addition, shock-absorbing devices 31 may be provided on all three exposed display surfaces.

Figures 31a and 31b show another example of a stepped fixing device. Figure 31a shows the main panel housing, and Figure 31b shows the auxiliary panel housing.

In this example, the fixing devices 30 and 30' formed in a step type are formed on the peripheral portion of the coupling surface of the panel housing. The stepped fixing devices 30 and 30' are formed corresponding to each other so as to be able to be interlocked. As shown in Fig. 27, the locking device 51 may also be provided to the fixing devices 30 and 30'. On the auxiliary panel housing 40, fixing grooves 50 and 50' are formed. The locking protrusions 51c and 51c' are coupled with the locking grooves 30a and 30a'. It is unlocked by locking buttons 51a and 51a'.

In this embodiment, although two panel housings are selected as an example for the convenience of description, more than three panel housings can be coupled in the same manner.

Embodiment 7 FIG. 32 shows another embodiment of the portable multi-display device of the present invention. At least two displays are stacked. When the display screens slide each other to enlarge the screen, the protective flip cover protects one side of the display screen connecting part where the display screens are arranged adjacent to each other.

As shown in the figure, the upper panel housing 20 is provided with an upper display screen 2, and the lower panel housing 40 is provided with a lower display screen 4 and is connected to the main body 160 through the housing 55 and the connecting portion 6a. The main body 160 is provided with a menu key and a button key.

Figures 33a and 33b show display screens that increase the screen by sliding on each other.

As shown in FIG. 33a, the upper panel housing 20 with the upper display screen 2 is stacked on the lower panel housing 40 with the lower display screen 4. The housing 55 fixes the upper and lower panel housings 20 and 40.

Using the handle 46 shown in FIG. 33a, when the user slides the lower panel housing 40 in the arrow direction, as shown in FIG. 33b, the lower display screen expands to enlarge the screen. At this time, the protective flip 43 is connected to the lower panel housing 40 so that it can move together with the lower panel housing 40.

In addition, when the user slides the lower panel housing 40 upward in the arrow direction, as shown in FIG. 34, the lower and upper display screens 4 and 2 are arranged adjacent to each other to provide the effect of a single screen.

At this time, when the protective flip 43 is pushed, it is accommodated in the lower panel housing 40. That is, when the upper and lower display screens 2 and 4 are unfolded, as shown in FIG. 32, the protective flip 43 can be accommodated in the lower panel housing 40.

Figures 35a and 35b show the upper and lower panel housings.

A sliding groove 55a along which the lower panel housing 40 slides horizontally is provided on the inner side of the housing 55. Although this part is omitted in the figure, formed on the lower panel housing 40 is a suspension convex part that moves along the sliding groove 55a.

In addition, the lower panel housing 40 slides vertically so as to be finally coupled with the upper panel housing 20. At this time, the coupling device 44 provided on the lower panel housing 40 is coupled to the coupling device 22 provided on the upper panel housing 20 (the dotted line in the figure).

In addition, the coupling device 44 of the lower panel housing 40 is provided with a coupling sliding groove 44i capable of vertically sliding the lower panel housing 40 relative to the upper panel housing 20. The coupling device 22 of the upper panel housing 20 is also provided with a sliding protrusion moving along the coupling sliding groove 44i.

In addition, when the upper display screen 2 is stacked on the lower display screen 4, the protective flip 43 covers the side surface of the joint portion 8'of the display screen. When the upper display screen 2 and the lower display screen 4 are adjacently arranged on the same plane, the protective flip 43 does not cover the joint portion 8'.

That is, when the upper and lower display screens 2 and 4 slide in their stacked state, the movement of the protective flip 43 does not cover the joint portion 8'.

In addition, since the A side of the housing 55 (see FIG. 35a) is blocked, when the upper and lower panel housings are stacked, the joint portion 8'of the lower display screen 4 can also be covered.

When the coupling device 44 is coupled, the upper and lower panel housings 20 and 40 are interconnected through a circuit by the connecting pin 44b. That is, the connection pin 44b functions as a circuit connector. Therefore, the upper panel housing 20 is also provided with a circuit connection device corresponding to the connection pin 44b.

Therefore, when the upper and lower panel housings 20 and 40 are stacked, they are not interconnected by a circuit, but when they extend adjacent to each other, the upper and lower panel housings 20 and 40 are interconnected by the circuit through the circuit connecting device.

As shown in Figure 33a, when the protective flip 43 covers the side surface of the joint portion 8', it is designed to have a symmetrical structure with the opposite side to obtain a good visual effect.

Figures 36a and 36b show another example of a sliding device.

As shown in Fig. 36a, the coupling device 44 is provided with a coupling gear 44c. As shown in FIG. 36b, a motor 44h, a motor shaft 44e, and a coupling belt 44d are provided in the connecting portion 6a. The coupling belt 44d meshes with the coupling gear 44c, thereby providing sliding of the downward panel housing 40 in the horizontal direction through the operation of the motor 44h.

That is, in the stacked state of the upper and lower panel housings 20 and 40 as shown in FIG. 33a, the power of the motor 44h is used to slide the panel housings to each other, thereby unfolding the panel housings in a stepped structure as shown in FIG. 33b.

Embodiment 8 FIGS. 37 to 39b show another embodiment of the portable multi-display device of the present invention.

FIG. 37 shows a case where the upper panel housing 20 is stacked on the lower panel housing 40. As shown in FIG. At this time, when the upper panel housing 20 slides horizontally, the upper and lower panel housings 20 and 40 are expanded in a stepped structure as shown in FIG. 38. Horizontal sliding is achieved along the sliding groove 55a formed on the housing 55, and a lower panel housing 40 is installed on the housing 55.

In the state where the upper and lower panel housings 20 and 40 are unfolded in a stepped structure, when the upper panel housing 20 is slid in the vertical direction, as shown in FIG. 39a, the upper and lower display screens 2 and 4 are arranged adjacent to each other, thereby providing Enlarged single screen.

At this time, when the lower and upper panel housings 40 and 20 are stacked, the protective flip 43 installed on the lower panel housing 40 covers the side surface of the joint portion 8'of the upper display screen 2. In addition, the protective flip 23 on the upper panel housing 20 covers the side of the joint portion 8'of the lower display screen 4. When the display is unfolded, the protective flip cover does not cover the side of the connector part. The protective flip 23 can be designed to cover the coupling device 44.

As shown in FIG. 39b, the protective flip 23 provided on the upper panel housing 20 is positioned in a position where it is folded, and the protective flip 43 provided on the lower panel housing 40 is accommodated in the lower panel housing.

Embodiment 9 FIGS. 40a and 40b show another embodiment of the portable multi-display device of the present invention, in which more than three display screens are stacked on each other.

As shown in FIG. 40a, stacked between the upper and lower panel housings 20 and 40 is the middle panel housing 60.

In addition, when the upper panel housing 20 is designed to slide horizontally to the right in the figure, and the lower panel housing 40 is designed to slide horizontally to the left in the figure, the three display screens 2, 4, and 6 are the middle panel housings. The middle display screen 6 set on 60 is unfolded based on it. That is, as shown in FIG. 40, the display screens 2, 4, and 6 are expanded in a stepped structure.

At this time, the protective flip 43 of the lower panel housing 40 covers the left joint part 8'of the middle display screen and the joint part 8'of the upper display screen 2. In addition, the protective flip 23 of the upper panel housing 20 covers the right joint part 8'of the middle display screen 6. In addition, the housing 55 covers the joint portion 8'of the upper display screen 2.

When the upper display screen 2 slides down to the middle display screen 6 and the lower display screen slides up to the middle display screen 6, the upper and lower display screens 2, 4 and the middle display screen 6 are adjacent to each other, thereby realizing an enlarged single screen.

Embodiment 10 The input device or IC can be separately coupled to the main body 160 in the same way as the coupling to the display screens 2 and 4.

Figure 41 shows the main body panel housing and the main body before coupling with other expansion devices.

The main body panel housing 20 is connected to the main body 160 through the connection part 6 a and is provided with a protection device 23 and a handle 26. The main body 160 is provided with an input key 110 and a button key 70. The side surface of the main body 160 is also provided with a side flap 103 and a handle 106. In addition, a protective flip cover 23 and a side flip cover 103 can be formed on both sides of the main body 160.

Figures 42a and 42b show a state where the protective flip cover and the side flip cover are opened.

As shown in FIG. 42a, the side flap 103 provided in the main body 160 is designed to be closed and opened by the main body shaft 103a. When the side flap 103 is opened, the main body connection portion 112 is exposed.

The protective flip 23 of the main body panel housing can be opened as shown in FIG. 42b. When the protective flip 23 is opened, the protective flip 23 unfolds side by side, thereby exposing the fixing device 30 and the coupling device 22. At this time, a part of the protective flip 23 is cut off so that the fixing device 30 can be provided.

That is, when the protective flip 23 is closed, the fixing device 30 is positioned in the fixing device groove 38 and protrudes and the flip rotating shaft 23a and the panel housing rotating shaft 23b. At this time, since the main panel casing 20 is provided with a shaft groove 43a', when the main panel casing 20 and the auxiliary panel casing 40 are coupled with each other, the flip shaft 43a and the panel casing shaft 43b are positioned in the shaft groove 43a'. Similarly, the auxiliary panel housing 40 is also provided with a rotating shaft groove into which the flip rotating shaft 23a and the panel housing rotating shaft 23b of the main panel housing 20 are inserted.

Figure 43 shows the main body and the main body panel housing coupled with the expansion device.

The two display screens 2 and 4 are coupled next to each other. The input device 18 is coupled to the main body 160. The input device 18 may be a digitizer or a touch panel. At this time, another auxiliary display screen can be installed at the bottom of the input device 18.

The input device 18 is coupled through the main body connection part 112. The expansion part 150 is also provided with a connection part (not shown) connectable to the main body connection part 112.

In addition, the expansion part 150 provided with the input device 18 may further be provided with a storage device. Therefore, when coupled with the expansion part 150, the function of the main body 160 is improved.

In addition, the display screen can also be expanded by protective flip covers 23 arranged on both sides of the main body panel housing 20. Similarly, the expansion part 150 can be further installed through the side flaps 103 provided on both sides of the main body 160.

Figure 44 shows a block diagram of an expansion device. The additional memory 270 and the additional input device 18 are connected to the CPU 200 through the main body connection part 112.

Figures 45a and 45b show the main body when the expansion device is connected to its back.

Generally, the battery 130 is installed on the back of the main body. At this time, the connection grooves 120a, 120b, and 120c are provided on the back of the main body and the battery 130 so that the expanded portion 150 can be coupled to the connection groove. Here, the connection grooves 120a and 120b are provided with circuit connection devices.

Those skilled in the art can consider other embodiments of the present invention from the description and practice of the present invention disclosed herein. The specifications and examples are only exemplary, and the true scope of the present invention is indicated by the following claims.

Industrial Applicability As described above, the invented portable multi-display device includes a main body panel housing and an auxiliary panel housing each with a display screen. The panel shells are designed to be able to be separated and connected to each other. When the panel shells are interconnected, the boundary range between the display screens is minimized so that the display screen appears to be driven by a single screen. Therefore, it can provide convenience in use.