3d display and 3d display system

Stereoscopic display and stereoscopic display system

3D DISPLAY AND 3D DISPLAY SYSTEM

The present invention relates to a display, and more particularly to a three-dimension (3D) display and a three-dimensional display system with the three-dimensional display.

In recent years, with the continuous advancement of display technology, viewers have increasingly higher requirements for the display quality (such as image resolution, color saturation, etc.) of the display. However, in addition to high image resolution and high color saturation, for viewers, whether the display can display stereoscopic images has also become one of the purchasing considerations.

Generally speaking, stereo imaging technology can be divided into three types: holographic type, multi-planar type and parallax image type. The holographic and multi-planar stereo imaging technology has the disadvantages of difficulty in processing a large amount of data and poor display effect. Therefore, in recent years, the stereo imaging technology is mostly based on paired stereo imaging. The paired stereoscopic image display uses spatial-multiplexed stereoscopic display technology as the main application technology. The spatial multiplexing stereoscopic display technology uses a lenticular screen or a parallax barrier to form the visible area of the left and right eyes on the display screen to achieve a three-dimensional effect. As shown in FIG. 1, the stereoscopic display 100 generates right-eye visible areas R1, R2 and left-eye visible areas L1, L2 at a certain distance. Generally speaking, the width of the right eye visible area R1, R2 and the left eye visible area L1, L2 are each 65 mm about.

When the left eye 10a and the right eye 10b of the viewer are in the left-eye visible area L1 and the right-eye visible area R2, respectively, as shown in FIG. 2A, the viewer can view the three-dimensional image. However, the widths of the right-eye visible areas R1, R2 and the left-eye visible areas L1, L2 are only about 65 mm, respectively. Therefore, when the viewer moves slightly to the left, as shown in FIG. 2B, the viewers left eye 10a and right eye 10b will fall on the right eye visible area R1 and the left eye visible area L1, which is the left eye of the viewer. The eye 10a and the right eye 10b directly enter the left and right eye reversal areas. Therefore, the viewer is prone to feel dizzy and uncomfortable. Similarly, if the viewer moves to the right, as shown in FIG. 2C, the viewer's left eye 10a and right eye 10b will be in the right eye viewable area R2 and left eye viewable area L2, that is, the viewer's left eye 10a and The right eye 10b directly enters the left and right eye reversal zone, which will also cause the viewer to feel dizzy and uncomfortable.

The present invention provides a three-dimensional display and a three-dimensional display system with the three-dimensional display, which can reduce the dizziness and discomfort caused by the left and right movement of the viewer.

The present invention provides a three-dimensional display, which includes a display and a micro lens. The display has a plurality of pixel units, and each pixel unit has a pixel pitch i. The micro lens is arranged on one side of the display. The micro lens has a plurality of lens units, and each lens unit has a lens pitch l. An image produced by the above-mentioned display is passed through the microlens A right-eye viewable area and a left-eye viewable area are then generated, and the distance between the center point of the right-eye viewable area and the center point of the left-eye viewable area is w_z, Where the lens pitch l of the lens unit satisfies the following relationship:<maths><img id="" he="198" wi="621" file="TWI399570B_D0001.tif" alt="" img-content="drawing" img-format="tif" orientation="portrait" inline="no" /></maths>And w_zIt is 70~500 mm, and i is 0.1~200μm.

The present invention provides a stereoscopic display system, which includes a stereoscopic display and a driving circuit electrically connected to the stereoscopic display. The above-mentioned three-dimensional display includes a display and a micro lens. The display has a plurality of pixel units, and each pixel unit has a pixel pitch i. The micro lens is arranged on one side of the display. The micro lens has a plurality of lens units, and each lens unit has a lens pitch l. After passing through the microlens, an image generated by the display produces a right eye visible area and a left eye visible area, and the distance between the center point of the right eye visible area and the center point of the left eye visible area is w_z, Where the lens pitch l of the lens unit satisfies the following relationship:<maths><img id="" he="182" wi="641" file="TWI399570B_D0002.tif" alt="" img-content="drawing" img-format="tif" orientation="portrait" inline="no" /></maths>And w_zIt is 70~500 mm, and i is 0.1~200μm.

The present invention provides a three-dimensional liquid crystal display system, which includes a liquid crystal display and a driving circuit electrically connected to the liquid crystal display. The liquid crystal display has a plurality of pixel units, and each pixel unit has a pixel pitch i; and a micro lens is arranged on one side of the liquid crystal display, the micro lens has a plurality of lens units, and each lens The unit has a lens pitch l. In particular, an image produced by a liquid crystal display After the lens, a right eye visible area and a left eye visible area are generated. The distance between the center point of the right eye visible area and the center point of the left eye visible area is w_z, The lens pitch l of the lens unit satisfies the following relationship:<maths><img id="" he="195" wi="624" file="TWI399570B_D0003.tif" alt="" img-content="drawing" img-format="tif" orientation="portrait" inline="no" /></maths>And w_zIt is 70~500 mm, and i is 0.1~200μm.

Based on the above, the distance w_zIncrease to 70~500 mm. Therefore, when the user moves to the left or right, the left eye and the right eye will enter the right eye viewable area or the left eye viewable area at the same time. At this time, the viewer is watching the 2D image, that is, the left eye and the right eye are watching To the same image. In this way, the dizziness and discomfort caused by the reversal of the left and right eye signals can be greatly reduced.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

FIG. 3 is a schematic diagram of a stereoscopic display system according to an embodiment of the invention. Please refer to FIG. 3, the stereoscopic display system includes a stereoscopic display 200 and a driving circuit 210 electrically connected to the stereoscopic display 200.

The stereoscopic display 200 includes at least a display 202 and a micro lens 206.

The above-mentioned display 202 may be a flat-panel display, such as a liquid crystal display, an organic electroluminescence display panel, a plasma display panel, an electrophoretic display or other suitable displays, because the above-mentioned various displays are Those who are familiar with the art are familiar with it, so I won't repeat it. The display 202 is electrically connected to the driving circuit 210, and the driving circuit 210 is used to drive and control the display 202 to display images.

In addition, the display 202 has a plurality of pixel units 202a, and each pixel unit 202a has a pixel pitch i. The pixel unit 202a includes a red (R) pixel unit, a green (G) pixel unit, and a blue (B) pixel unit. In this embodiment, the above-mentioned pixel unit 202a can be further divided into right-eye pixel units and left-eye pixel units, and the right-eye pixel units and left-eye pixel units are alternately arranged in the display 202. The arrangement is, for example, R_RR_LG_RG_LB_RB_LOr R_RG_LB_RR_LG_RB_Land many more. The image signal displayed by the right-eye pixel unit of the display 202 is used to make the viewer's right eye view, and the image signal displayed by the left-eye pixel unit of the display 202 is used to make the viewer's left Eye watch.

The micro lens 206 is arranged on one side of the display 202, and the distance between the micro lens 206 and the display 202 is f. The microlens 206 has a plurality of lens units 206a, and each lens unit 206a has a lens pitch l. In this embodiment, each lens unit 206a of the microlens 206 is a lenticular lens, so the microlens 206 is composed of a plurality of cylindrical lenses 206a arranged in parallel. In more detail, please refer to FIG. 5. FIG. 5 is a top view of the microlens 206 and the display 202 stacked together. Each cylindrical lens 206a of the microlens 206 covers a plurality of pixel units 202a. In this embodiment, each cylindrical lens 206a covers two rows of pixel units 202a, but the invention is not limited to this. In other embodiments, each cylindrical lens 206a may be arranged corresponding to one row or more than two rows of pixel units 202a.

Please continue to refer to FIG. 3. In this embodiment, an optical film set 204 may be further included between the display 202 and the micro lens 206. The gap between the optical film set 204 and the microlens 206 and the gap between the optical film set 204 and the display 202 can be filled with an adhesive, so as to adhere the optical film set 204 and the microlens 206 together, and The optical film set 204 and the display 202 are glued together. However, the present invention does not limit the need to use the optical film set 204, nor does it limit the need to use an adhesive to fix the optical film set and the display and the microlens together.

In particular, the image generated by the above-mentioned display 202 will generate a right-eye visible area R and a left-eye visible area L at a certain distance after passing through the microlens 206. The distance between the center point of the right eye visible area R and the center point of the left eye visible area L and the display 202 is z respectively. In addition, the distance between the center point of the right-eye viewable area R and the left-eye viewable area L is w_z. In this embodiment, w_zIt can be 70-500 mm, preferably 80-300 mm, and more preferably 100-200 mm.

Generally speaking, the distance w between the lens pitch l of the lens unit 206a and the center points of the visible regions R and L of the left and right eyes_zThe relationship is as the following mathematical formula:<maths><img id="" he="178" wi="641" file="TWI399570B_D0004.tif" alt="" img-content="drawing" img-format="tif" orientation="portrait" inline="no" /></maths>

<maths><img id="" he="155" wi="699" file="TWI399570B_D0005.tif" alt="" img-content="drawing" img-format="tif" orientation="portrait" inline="no" /></maths>

l: the pitch of the lens unit

n: the number of visible areas

i: pixel pitch of pixel unit

z: the distance between the center point of the visible area and the display

f: the distance between the display and the micro lens

w_z:The distance between the center point of the visible area of the right eye and the center point of the visible area of the left eye

Generally speaking, the pixel pitch i of a pixel unit is about 0.1 to 200 micrometers (μm), and generally about 1 to 50 μm. The distance z between the center point of the visible area and the display can be 10cm~5m. In more detail, if the above-mentioned display 202 is a display for a mobile phone, the distance z between the center point of the visible area and the display is about 30 cm-50 cm. If the above-mentioned display 202 is a display for an electronic photo frame, the distance z between the center point of the visible area and the display is about 70 cm. If the above-mentioned display 202 is a display for a monitor, the distance z between the center point of the visible area and the display is about 100 cm. If the above-mentioned display 202 is a display for a TV, the distance z between the center point of the visible area and the display is about 2~3m. In addition, the distance f between the display and the microlens can be adjusted as required.

Continuing from the above, it can be seen from equation (2) that<img file="TWI399570B_D0006.tif" wi="433" he="193" img-format="tif" img-content="character" orientation="portrait" inline="no" />

Next, add the above<img file="TWI399570B_D0007.tif" wi="389" he="210" img-format="tif" img-content="character" orientation="portrait" inline="no" />After substituting formula (1), we can get:<maths><img id="" he="175" wi="402" file="TWI399570B_D0008.tif" alt="" img-content="drawing" img-format="tif" orientation="portrait" inline="no" /></maths>

The stereoscopic display of this embodiment is mainly used to generate two viewable areas (the right eye viewable area and the left eye viewable area), so the number of the above-mentioned viewable areas n=2. Therefore, the lens pitch l of this embodiment satisfies the following criteria System:<maths><img id="" he="191" wi="619" file="TWI399570B_D0009.tif" alt="" img-content="drawing" img-format="tif" orientation="portrait" inline="no" /></maths>

In more detail, when the lens pitch l of the lens unit 206a of the microlens 206 and the pixel pitch i of the pixel unit 202a of the display 202 and the center point of the right-eye viewable area R and the center point of the left-eye viewable area L are between The distance w_zWhen the above relationship is satisfied, the stereoscopic display can generate a right-eye viewable area R and a left-eye viewable area L, and the distance between the center point of the right-eye viewable area R and the center point of the left-eye viewable area L is w_zIt is 70~500 mm, and the pixel pitch i of the pixel unit is 0.1~200μm.

It is worth mentioning that, according to other embodiments, the maximum width of the above-mentioned right eye visible area is w_R, The maximum width of the visible area of the left eye is w_L, And w_Rw_z, W_Lw_z. In other words, when w_R=w_zAnd w_L=w_zAt this time, the right-eye visible area R and the left-eye visible area L do not overlap with each other. When w_R&gt;w_zAnd w_L&gt;w_zAt this time, the right-eye visible area R and the left-eye visible area L partially overlap.

As mentioned above, when a viewer uses the stereoscopic display shown in FIG. 3 to view an image, if the viewers left eye 10a and right eye 10b are respectively located in the left eye viewable area L and right eye viewable area R to view the image As shown in FIG. 6A, the viewer can see the three-dimensional or 3-dimension image.

When the viewer moves to the right, as shown in FIG. 6B, the distance w_zIt is 70~500 mm, so the left eye 10a and the right eye 10b of the viewer will be located in the right eye visible area R at the same time to view the image, so the viewer sees a flat or 2-dimension image at this time.

Similarly, if the viewer moves to the left, as shown in FIG. 6C, the distance w_zIt is 70~500 mm, so the left eye 10a and the right eye 10b of the viewer will be located in the left eye visible area L at the same time to view the image, so the viewer also sees the 2-dimension image at this time.

It can be seen from FIGS. 6A to 6C that the stereoscopic display of this embodiment can produce a two-dimensional-three-dimensional-two-dimensional (2D-3D-2D) stereoscopic display effect. Therefore, if the viewer moves to the left or right while watching the stereoscopic display of this embodiment, the viewers left and right eyes will not enter the left and right eye reversal area, but will enter the 2D image area, that is The left eye and the right eye see the same image. In this way, the dizziness and discomfort caused by the reversal of the left and right eye signals can be greatly reduced.

The display 202 in the embodiment of FIG. 3 may be a liquid crystal display, an organic electroluminescence display, a plasma display, an electrophoretic display, or other suitable displays. Since the above-mentioned various displays are well-known to those skilled in the art, they will not be used anymore. Go into details. If the above-mentioned display 202 is a liquid crystal display or other non-self-luminous display, the display 202 generally includes a backlight light source. Hereinafter, an embodiment will be used to illustrate a stereoscopic display system using a liquid crystal display.

4 is a schematic diagram of a stereoscopic display system according to an embodiment of the invention. Please refer to FIG. 4. The structure of FIG. 4 is similar to that of FIG. The LCD panel 290 includes The first substrate 250, the second substrate 260, and the liquid crystal layer 270 located between the first substrate 250 and the second substrate 260. Similarly, the display 202 has a plurality of pixel units 202a. In the liquid crystal display, each pixel unit 202a includes a data line, a scan line, an active element electrically connected to the data line and the scan line, and an active element electrically connected to the active element. Pixel electrode. The second substrate 260 may be a blank substrate or a substrate provided with an electrode layer. In addition, the color filter layer may be disposed on the first substrate 250 or the second substrate 260.

The backlight module 280 is located on the back of the first substrate 250 to provide light to the liquid crystal display panel 290. The backlight module 280 may be a direct type backlight module or a side-light type backlight module. In addition, the liquid crystal display panel 290 is electrically connected to the driving circuit 210, and the driving circuit 210 is used to control the liquid crystal display panel 290 to display images. The backlight module 280 is electrically connected to the driving circuit 210, and the driving circuit 210 is used to control the backlight module 280 to turn on and off. The driving circuit 210 of this embodiment is represented by a schematic diagram. In fact, the liquid crystal display panel 290 and the backlight module 280 are respectively controlled by corresponding driving elements.

Similarly, when a viewer uses the stereoscopic display system shown in FIG. 4 to view an image, if the viewer's left eye and right eye are located in the left-eye viewable area L and right-eye viewable area R respectively to view the image, See three-dimensional or three-dimensional images. If the viewer moves to the left or to the right, the viewers left eye and right eye will enter the left eye viewable area L or right eye viewable area R at the same time, and see a flat or two-dimensional image, which can generate Two-dimensional-three-dimensional-two-dimensional (2D-3D-2D) stereoscopic display effect.

Based on the above, the distance w_zIncrease to 70~500 mm. Therefore, when the user moves to the left or right, the left eye and right eye will enter the right eye viewable area or the left eye viewable area at the same time. At this time, the viewer will watch the 2D image, that is, the left eye and the right eye are watching To the same image. In this way, the dizziness and discomfort caused by the reversal of the left and right eye signals can be greatly reduced.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be subject to those defined by the attached patent application scope.

<p>100, 200, 300Three-dimensional display</p><p>R, R1, R2, L, L1, L2Visible area</p><p>10a, 10beyes</p><p>202Display</p><p>202aPixel Unit</p><p>204Optical Film Set</p><p>206Micro lens</p><p>206alens unit</p><p>210Drive circuit</p><p>250,260Substrate</p><p>270Liquid crystal layer</p><p>280Backlight Module</p><p>290LCD display panel</p><p>lLens pitch of lens unit</p><p>iPixel pitch of pixel unit</p><p>zThe distance between the center point of the visible area and the display</p><p>fThe distance between the display and the micro lens</p><p>w_zThe distance between the center point of the visible area of the right eye and the center point of the visible area of the left eye</p>

FIG. 1 is a schematic diagram of a conventional stereoscopic display generating multiple right-eye viewable areas and multiple left-eye viewable areas.

FIGS. 2A to 2C are schematic diagrams showing that the viewer easily enters the left and right eye reversal area due to left and right movement when viewing the conventional stereoscopic display.

FIG. 3 is a schematic diagram of a stereoscopic display system according to an embodiment of the invention.

4 is a schematic diagram of a stereoscopic display system according to another embodiment of the invention.

FIG. 5 is a schematic diagram of a display and a micro lens stacked together according to an embodiment of the present invention.

6A to 6C show how the viewer views the stereoscopic display of the present invention Move left and right to see a schematic diagram of a two-dimensional or planar image.