Display device for switching 2d/3d video

The present invention relates to a kind of image switching display device, and more particularly to a kind of 2D image or 2D / 3D image switching display device capable of switching a 3D display state.

The principle of known stereoscopic image display technology is binocular image difference (Binocular). Using disparity), the right eye and the left eye each receive the image and integrate it into one stereoscopic image in the cerebrum. Naked-eye stereoscopic display technology can be divided into two types, lenticular (or cylindrical lens) (Lenticular) and optical barrier (Barrier), depending on the structure. The above two types of structures have their own strengths and weaknesses. After that, the lenticular lens has many elongated lenses arranged continuously along the axial direction, uses the refraction principle of optics, and achieves the purpose of spectroscopy, so that there is little light loss and the brightness is excellent. .. However, there is a limitation of refraction at the edge of the lens structure, and the effect of refraction is not good. Further, since the manufacturing error of the cylindrical lens and the flatness of the lens surface are difficult to obtain, scattered light is formed, and a part of the stereoscopic image is blurred, which affects the display effect of the entire 3D image. Further, in the optical barrier type, the emission of light at a certain angle is restricted by the aligned barrier, and the image at a certain angle is transmitted to the left eye and the right eye to form a stereoscopic image. Although the brightness of a single-lens image is better than that of a cylindrical lens, it has drawbacks such as a decrease in the brightness of the entire image and a decrease in the resolution of the image due to the characteristics of the structure.

In addition, a general stereoscopic image display device can display only a stereoscopic image, and cannot switch between a two-dimensional image and a stereoscopic image. The main reason for this is that after the lenticular lens and optical barrier are combined with a general display device, all plane images are displayed on an external stereoscopic image display module when stereoscopic image display is not required. Except when it is removed from the device, it is divided into left-eye and right-eye images after passing through a lenticular lens or an optical barrier. However, in practical use, this type of method needs to accurately aim the position in order to prevent problems such as deterioration or deviation of the resolution of the image. Therefore, a vendor has developed a stereoscopic image display device that can switch between a stereoscopic image and a two-dimensional image.

According to the switching display device of the 2D plane image and the 3D stereoscopic image display screen, the Republic of China Patent Publication No. M371902 (Patent Document 1) includes a flat panel and a parallax barrier panel provided on the display surface of the flat panel. Among them, the parallax barrier panel has a grid pattern including a first electric discoloration member layer and a second electric discoloration member layer. In the display mode of the 2D plane image, both the first electric discoloration member layer and the second electric discoloration member layer are transparent, and in the 3D stereoscopic image display mode, the grid pattern is a non-transmissive pattern. Further, the first electrically discoloring member layer has a first color, and the second electrically discoloring member layer has a second color.

Republic of China Patent Gazette No. M368088 (Patent Document 2), a switching display device for a 2D plane image and a 3D stereoscopic image display screen is a first substrate, a disparity barrier part attached below the first substrate, and a disparity barrier part below the disparity barrier part. The color filter unit provided in the above, the common electrode provided below the color filter unit, the liquid crystal unit provided below the common electrode, the plurality of thin films provided below the liquid crystal unit, and the second thin film provided below the plurality of thin films. It is provided with a substrate and a light source provided below the second substrate, and the display of a planar image and a stereoscopic image is switched by a disparity barrier portion to reduce the thickness and assembly cost of a display device of a conventionally known technique.

<p><patcit num="1"><text>Republic of China Patent Gazette No. M371902</text></patcit><patcit num="2"><text>Republic of China Patent Gazette No. M368088</text></patcit></p>

<p> In both of the above two patent documents, an electrically discoloring member is used as a parallax barrier device for stereoscopic images. As a common structural defect, the electrolyte layer required for the electric discoloration device is not provided. Therefore, since ions are not provided to the electrolyte layer of the electrocoloring layer, the reversible reaction of oxidation or reduction required for the discoloration or the change of removing the color cannot be caused in the electrocolorizing device. Therefore, neither of the above two patent documents can be implemented. In addition, a grid pattern is provided for both the transparent electrode layer and the electrically discoloring member layer of the parallax barrier device. Therefore, in the production process, coating, sputtering, and etching are performed in separate layers, and accurate alignment is required for each laminate. The production process is extremely complicated, and a grid pattern is provided for all laminates. A hollow area is created in the middle of the patterns, which affects the overall light transmission, refraction or reflection. Even in normal 2D display, it may affect the image quality of the display device, causing a color difference or brightness imbalance problem. On the other hand, in the structure of the base material of another type of embedded liquid crystal display device described in the Republic of China Patent No. M368088 of Patent Document 2, the grid pattern is embedded in a transparent member having an insulating property. Although the thickness of the liquid crystal display device for stereoscopic images can be reduced, the production process is very complicated. In addition, although the known technology can switch between a two-dimensional image and a stereoscopic image, a handheld device capable of arbitrarily changing the viewing angle cannot change the stereoscopic display angle, and unless it is fixed in a certain direction, a 3D image Cannot be viewed.</p>

<p> The inventor studied diligently on the above needs and invented a novel 2D / 3D image switching display device based on the inventor's many years of experience in this field.</p><p> One object of the present invention is to provide a 2D / 3D image switching display device capable of switching a kind of 2D or 3D image display mode.</p><p> One object of the present invention is to provide a kind of 2D / 3D image switching display device capable of displaying a 2D / 3D image without the need to add a parallax barrier device.</p><p> One object of the present invention is to provide a kind of 2D / 3D image switching display device in which the resolution of an image is not affected when displaying a planar image.</p><p> One object of the present invention is to provide a kind of 2D / 3D image switching display device that can simplify the production process.</p><p> One object of the present invention is to provide a kind of 2D / 3D image switching display device capable of adjusting the shading angle used for stereoscopic image display according to the viewing angle.</p><p> In order to achieve the above object, the 2D / 3D image switching display device according to the present invention includes an image display unit that displays a two-dimensional image and a stereoscopic image, and an image switching unit provided on the surface of the image display unit. The image switching unit has a first transparent substrate and a second transparent substrate installed opposite to each other, and a first transparent conductive element and a second transparent conductive element are provided on the surface corresponding to the transparent substrate, respectively. The other surface of the transparent substrate is coupled to the surface of the image display unit. Subsequently, a plurality of electrochromic layers and electrolyte layers are provided at intervals below the first transparent substrate, and the electrochromic layers are discolored by the electrical conduction of the first and second transparent conductive elements. Cause change.</p><p> In addition, in order to improve the masking effect when the electrical discoloration layer is discolored, a plurality of first electrical discoloration layers and second electrical discoloration layers are provided at intervals on both sides of the electrolyte layer, and the first and second electrical discoloration layers are provided. The arrangement direction of the layers may be the same, or the structure may be simplified to a structure in which the layers are overlapped as a whole. The electrolyte layer is completely replaced by a second electrically discolored layer, which also has complementary color and ion providing functions.</p><p> As a result, when the image display unit switches from the flat image to the stereoscopic image display mode, the displayed image is divided into a left-eye image and a right-eye image, respectively. At this time, the transparent conductive element was made conductive, the color of the electric discoloration layer was switched from transparent to the dark color shading area of non-transmissive light, and the layers were arranged at intervals at which the electric discoloration layers were formed according to the interval arrangement state of the electric discoloration layers. In order to prevent the formation of an interference pattern in the reception of the naked eye, the plurality of light-shielding areas are divided into a left-eye image and a right-eye image, and a part of the interference pattern area is removed by the light-shielding area. Further, as a known technique, two types of devices, a lenticular lens (Lenticular) or an optical barrier (Barrier), are used for the image display unit in the case of a stereoscopic image table, but the 2D / 3D image switching display device according to the present invention is a device. When displaying a stereoscopic image, the stereoscopic image classified into the left eye image and the right eye image by the image display unit can be directly displayed.</p><p> It should be noted that in the electric discoloration structure, even if the stacking order of the electric discoloration layer and the electrolyte layer is reversed, the discoloration mechanism of the electric discoloration layer is not affected. The present invention controls the oxidation or reduction reaction of the electrically discolored layer mainly by controlling the applied voltage. Further, although the electrically discoloring layers of the 2D / 3D image switching display device according to the present invention are arranged in a plurality of intervals, the transparent conductive elements are not arranged in a plurality of intervals or are laminated in one production process of the same substrate. By performing the arrangement only at intervals, the alignment problem of each laminate can be solved and the production process can be simplified.</p><p> In addition, when a stereoscopic image is displayed by combining two sets of electrical discoloration devices, detecting the operation of the sensor element, and switching the circuit of the control element, after the viewer rotates the device, the disparity barrier device By switching the mask angle accordingly, the stereoscopic image can be viewed from either direction of the device.</p>

<figref num="1">It is an exploded perspective view of Example 1 of this invention.</figref><figref num="2">It is operation mode diagram (the 1) of Example 1 of this invention.</figref><figref num="3">FIG. 2 is an operation mode diagram (No. 2) of the first embodiment of the present invention.</figref><figref num="4">FIG. 3 is an operation mode diagram (No. 3) of the first embodiment of the present invention.</figref><figref num="5">It is a different laminated combination diagram (No. 1) of Example 1 of this invention.</figref><figref num="6">It is a different laminated combination diagram (No. 2) of Example 1 of this invention.</figref><figref num="7">It is a different laminated combination diagram (No. 3) of Example 1 of this invention.</figref><figref num="8">It is a different laminated combination diagram (No. 4) of Example 1 of this invention.</figref><figref num="9">It is a different laminated combination diagram (No. 5) of Example 1 of this invention.</figref><figref num="10">It is a different laminated combination diagram (No. 6) of Example 1 of this invention.</figref><figref num="11">It is an exploded perspective view of Example 2 of this invention.</figref><figref num="12">It is an exploded perspective view of Example 3 of this invention.</figref><figref num="13">It is an exploded perspective view of the protective layer of Example 3 of this invention.</figref><figref num="14">It is a different laminated combination diagram (No. 1) of Example 3 of this invention.</figref><figref num="15">It is a different laminated combination diagram (No. 2) of Example 3 of this invention.</figref><figref num="16">3 is a different laminated combination diagram (No. 3) of Example 3 of the present invention.</figref><figref num="17">It is an exploded perspective view of Example 4 of this invention.</figref><figref num="18">It is an exploded perspective view of Example 5 of this invention.</figref><figref num="19">It is an exploded perspective view of the protective layer of Example 5 of this invention.</figref><figref num="20">It is an exploded perspective view of Example 6 of this invention.</figref><figref num="21">It is an exploded perspective view of Example 7 of this invention.</figref><figref num="22">Example 6 of the present invention Another exploded perspective view.</figref><figref num="23">Example 6 of the present invention is another exploded perspective view.</figref>

In order to further understand the contents of the present invention, the contents will be described below together with the drawings.

<p> It will be described with reference to the exploded perspective view and the operation mode view 1 to 3 of the first embodiment according to the present invention shown in FIGS. 1 to 4. As shown in the figure, the 2D / 3D image switching display device according to the present invention includes an image display unit 1 and an image switching unit 2.</p><p> Among them, in the image display unit 1 that displays the flat image and the stereoscopic image, the stereoscopic image of the display can be performed by either software, firmware, or hardware technology. As an example, software or firmware can convert a planar image into a superposed image that includes a left eye image and a right eye image, or a lenticular or optical barrier can be used with these two hardware devices to create a left eye image and a right eye image. Sort into the images of. However, since this type of stereoscopic image display technology is not a technical feature of the present invention and is a known technology, the description thereof is omitted here. The image display unit 1 includes, for example, a liquid crystal display (LCD), a plasma display panel (PDP), a surface conduction electron emitter display (SED), and a field emission display (SED). Emission Display, It may be either FED), Vacuum Fluorescent Display (VFD), Organic Light-Emitting Diode (OLED) or Electronic Paper (E-Paper).</p><p> The image switching unit 2 is coupled to the image display unit 1 and includes a first transparent substrate 21, a second transparent substrate 22, an electric discoloration layer 23, and an electrolyte layer 24.</p><p> Among them, the first transparent conductive element 211 in the form of a flat plate, a thin plate, or a film is provided on the surface below the first transparent substrate 21. The members of the first transparent substrate 21 and the second transparent substrate 22 are plastic, polymer plastic, glass or resin, polyethylene terephthalate (PET), polycarbonate (Poly Carbonate, PC), polyethylene (polyethylene, PE), and polychloride. Select either a plastic polymer consisting of vinyl (Poly Vinyl Chloride, PVC), polypropylene (Poly Propylene, PP), polystyrene (Poly Styrene, PS), polymethylmethacrylate, PMMA, or a mixture thereof. 1 The members of the transparent conductive element 211 and the second transparent conductive element 221 are Indium Tin Oxide (ITO) and Indium Zinc Oxide, It can be selectively used from the Impurity-Doped Oxides group, which is a combination of IZO, Al-doped ZnO, AZO or Antimony Tin Oxide (ATO).</p><p> The electric discoloration layers 23 are arranged in a plurality of intervals and provided above the second transparent substrate 22, and cover the surface of the second transparent conductive element 221. The mounting method can be, for example, the following method. It can be selectively used from the sol-gel method, the vacuum sputtering method, the electroplating method, the laser etching method, and the like. The members of the electrical discoloration layer 23 can be selected and used from any of a group combining anodic coloration, cathodic coloration or negative / anodic coloration. In general, the anodic coloration member is chromium oxide (C)._r2O₃), Nickel oxide (N_iO_x), Iridium oxide (IrO)₂), Manganese oxide (MnO)₂), Hexacyanoferric ferric acid III F_e4[Fe (CN)₆]₃Or nickel hydroxide Ni (OH)₂It can be selected and used from more combined anodic coloration transition metal element oxides. Cathodic coloration members are mainly tungsten oxide (WO)₃), Molybdenum oxide (M_{o o}O₃), Niobium Oxidation (N_b2O₃), Titanium oxide (T_iO₂), Strontium titanate (S)_rT_iO₃) Can be selected and used from the cathode coloration transition metal element oxides to be combined. Cathodic / anodic coloration members are mainly vanadium oxide (V)₂O₂), Rhodium oxide (Rh)₂O₃) Or cobalt oxide (CoOx) combined with either cathodic / anodic coloration transition metal element oxides. In addition, tantalum pentoxide (Ta) that can be used as a solid electrolyte and an ionic conductive layer.₂O₅) Etc. can be selected and used from transition metal element oxides.</p><p> The classification of electrical discoloration members that are often seen in each transition metal oxide is shown in the table below (Table 1).</p><p><tables num="1"><img file="JP2012003221A_D0001.tif" /></tables></p><p> The electrolyte layer 24 is provided between the electrically discoloring layer 23 and the first transparent substrate 21. The main purpose is to provide ions, which are transmitted to the electrochromic layer 23 and are either liquid or solid electrolytes. However, since the electrolyte in the liquid state has a leakage problem in the packaging process of the device, the electrolyte in the solid state is generally used. One example of the electrolyte layer 24 according to the present invention is an electrolyte in a solid state, and a hydrogen ion exchange membrane (Proton Exchange Membrane) is preferable. Choose from either Ionomer membranes, Organic-Inorganic hybrid membranes or Membrane based on polymer and oxo-acids. Among them, the ionic polymerization membrane can be selectively used from the polymerized perfluorosulfonic acid (PFSA) membranes.</p><p> In another embodiment of the invention, the electrolyte layer 24 is lithium perchlorate (LiClO).₄), Potassium hydroxide (KOH), sodium hydroxide (NaOH), and sodium silicate (Na)₂SiO₃) Is the liquid electrolyte selected from.</p><p> This type of electrically discoloring member is called a member that applies an electric potential to generate a reversible reaction of oxidation or reduction to cause discoloration. The operating principle of the electric discoloration layer 23 causes the ionic value state of the transition metal element inside the electric discoloration member, and causes the reaction of discoloration and fading. By applying the bias pressure to the electric discoloration layer 23, the ions stored in the electrolyte layer 24 are diffused to the electric discoloration layer 23, and electrons are injected into the electric discoloration layer 23 from the second transparent conductive element 221 to generate electricity. Maintains the neutrality of the discoloration layer. On the other hand, in the color change process, electrons and ions are injected into the electric color change layer 23 to gradually change the redox state of the members of the electric color change layer 23, and the refractive index and transmittance of the electric color change layer 23 are changed. This process is completed within seconds to a minute. Therefore, as is clear from FIG. 3, the electrically discoloring layer 23 switches from the transparent state to the discolored state, and forms a non-transmissive light-shielding area 231. Further, in the anodic discoloration method, the electric discoloration layer 23 switches from the discoloration state to the transparent state after the bias pressure applied to the electric discoloration layer 23 disappears.</p><p> On the other hand, in the fading process, when a reverse voltage or a zero bias voltage is applied to the electric discoloration layer 23, the electric discoloration layer 23 returns to the electrolyte layer 24 along the opposite path, and the electric discoloration layer 23 returns to the conventional colorless state. .. Therefore, as is clear from FIG. 4, the electrically discolored layer 23 switches from the non-transmissive light-shielding area 231 in the discolored state to the transparent state. Further, in the cathode discoloration method, after the bias voltage applied to the electric discoloration layer 23 disappears, the electric discoloration layer 23 switches from the transparent state to the discolored state and is reduced to the non-transmissive light-shielding area 231.</p><p> A plurality of electric discoloration layers 23 are provided on the upper surface of the second transparent substrate 22 by an interval arrangement method, whereas the electric discoloration layer 23 is provided above the second transparent conductive element 221. Therefore, when the first transparent conductive element 211 and the second transparent conductive element 221 are electrically conductive, discoloration switching is caused in the electrically discoloring layer 23. For this reason, the non-transmissive light-shielding areas 231 provided in the interval arrangement method are displayed by the image display unit 1 when displaying the processed multiple images (divided into the image L of the left eye and the image R of the right eye). These light-shielding areas 231 remove a part of the superimposed area of the image, and prevent interference patterns due to viewing with the naked eye. Further, when displaying a stereoscopic image of a known technique, it is necessary to attach two types of devices, a lenticular or an optical barrier, to the image display unit. However, the 2D / 3D image switching display device according to the present invention. If is applied, the image of the left eye and the image of the right eye can be directly sorted by the image display unit.</p><p> This will be described with reference to the different laminated combination diagrams of Example 1 according to the present invention shown in FIGS. 5 to 7. As shown in the figure, a plurality of first transparent conductive elements 211 are provided with the lower surface of the first transparent substrate 21 by an interval arrangement method, or a plurality of second transparent conductive elements 221 are arranged on a plurality of second transparent substrates 22 by an interval arrangement method. The upper surface can be installed, or a plurality of the first and second transparent conductive elements 211 and 221 can be attached to the surfaces of the first and second transparent substrates 21 and 22 by the interval arrangement method. The arrangement direction is the same as the arrangement direction of the electric discoloration layer 23. These structures are a variation combination of Example 1. However, in order to simplify the production process, as an optimum method, by providing a plurality of electric discoloration layers 23 in a laminated structure by an interval arrangement method, an extremely good discoloration mechanism and a mask effect can be achieved.</p><p> This will be described with reference to FIGS. 8 to 10. In addition, in order to prevent erosion of the first transparent conductive element 211 by the electrolyte, a protective layer 26 is further provided on the surface of the first transparent conductive element 211, and the electric discoloration layer 23 is electrically discolored to avoid water hydrolysis by the electrolyte and to prolong the service life. A protective layer 26 can be further provided between the and the electrolyte layer 24. The member of the protective layer 26 is silicon dioxide (SiO)₂), Aluminum oxide (Al₂O₃), Tetramethyldisiloxane, TMDSO, C₄H₁₄OSi₂) Others A carbon-silicon oxide film or the like is provided in the above-mentioned lamination by an electroplating method or a sputtering method.</p><p> This will be described with reference to the exploded perspective view of Example 2 of the present invention shown in FIG. As shown in the figure, the difference between Example 2 according to the present invention and Example 1 described above is that a plurality of electrolyte layers 24 are arranged between the first transparent substrate 21 and the electrically discoloring layer 23 by an interval arrangement method. .. As a preferable application example, such an arrangement method of the electrolyte layer 24 effectively deepens the contrast of the transmittance by using the electrolyte layer 24 as an auxiliary discoloration function of the electric discoloration layer 23. That is, an electrically discoloring member can be selectively used for the electrolyte layer. The member can be selected and used from either a group of transition metal element oxides combined by anodic coloration, cathodic coloration or negative / anodic coloration. In general, the anodic coloration member is chromium oxide (C)._r2O₃), Nickel oxide (N_iO_x), Iridium oxide (IrO)₂), Manganese oxide (MnO)₂), Hexacyanoferric ferric acid III F_e4[Fe (CN)₆]₃Or nickel hydroxide Ni (OH)₂Can be selected and used from more combined anodic coloration transition metal element oxides. Cathodic coloration members are mainly tungsten oxide (WO)₃), Molybdenum oxide (M_{o o}O₃), Niobium Oxidation (N_b2O₃), Titanium oxide (T_iO₂), Strontium titanate (S)_rT_iO₃) Can be selected and used from the cathode coloration transition metal element oxides to be combined. Cathodic / anodic coloration members are mainly vanadium oxide (V)₂O₂), Rhodium oxide (Rh)₂O₃) Or cobalt oxide (C_{o o}O_x) Can be selected from the combination of negative / anodic coloration transition metal element oxides. In addition, tantalum pentoxide (Ta) that can be used as a solid electrolyte and an ionic conductive layer.₂O₅) Etc. can be selected and used from transition metal element oxides. Further, when the electrolyte layer 24 is used as an auxiliary discoloration layer, a cathode discoloration member is used for the electrical discoloration layer 23, and an anode discoloration member is used for the auxiliary discoloration layer. The same is true in the opposite case. Therefore, at the same time that the electric discoloration layer 23 is discolored, the auxiliary discoloration layer is also discolored. On the other hand, at the same time that the electrically discoloring layer 23 fades, the auxiliary discoloring layer also undergoes a fading reaction.</p><p> This will be described with reference to the exploded perspective view of Example 3 of the present invention shown in FIG. As shown in the figure, the third embodiment of the present invention differs from the first embodiment in that the mounting positions of the electrically discoloring layer 23 and the electrolyte layer 24 are replaced. However, since the effect to be achieved and the characteristics of each composition structure are still the same as those in the above-mentioned Example 1, detailed description here will be omitted.</p><p> This will be described with reference to FIG. In addition, in order to prevent erosion of the second transparent conductive element 221 by the electrolyte, a protective layer 26 is further provided on the surface of the second transparent conductive element 221. A protective layer 26 can be further provided between the and the electrolyte layer 24. The member of the protective layer 26 is silicon dioxide (SiO)₂), Aluminum oxide (Al₂O₃), Tetramethyldisiloxane (C₄H₁₄OSi₂) Others A carbon-silicon oxide film or the like is provided in the above-mentioned lamination by an electroplating method or a sputtering method.</p><p> 14 to 16, refer to different laminated combination diagrams of Example 3 according to the present invention. As shown in the figure, the first transparent conductive elements 211 are arranged in a plurality of intervals and provided on the lower surface of the first transparent substrate 21, or the second transparent conductive elements 221 are arranged in a plurality of intervals and are provided in the second transparent substrate 22. The upper surface or the first and second transparent conductive elements 211 and 221 are arranged at intervals and provided on the surfaces of the first and second transparent substrates 21 and 22, and the arrangement direction is the same as the arrangement direction of the electric discoloration layer 23. To do.</p><p> Subsequently, FIG. 17 refers to the three-dimensional decomposition mode diagram of Example 4 according to the present invention. As shown in the figure, the electrolyte layers 24 are arranged in a plurality of intervals between the second transparent substrate 22 and the electrically discoloring layer 23. As a preferable application example, such an arrangement method of the electrolyte layer 24 effectively deepens the contrast of the transmittance by using the electrolyte layer 24 as an auxiliary discoloration function of the electric discoloration layer 23. That is, an electrically discoloring member can be selected for the electrolyte layer. In Example 3, the positions of the electrolyte layer 24 and the electrically discoloring layer 23 are replaced, but since the effect to be achieved and the characteristics of each composition structure are the same as those in Example 2 described above, detailed description thereof will be omitted here.</p><p> This will be described with reference to the three-dimensional decomposition mode diagram of Example 5 according to the present invention shown in FIG. Compared with the above-mentioned Examples 1 to 4, the purpose of such an installation is to improve the better light-shielding effect, so in this example, another electric discoloration layer is added. The structure includes an image display unit 1 for displaying a flat image and a stereoscopic image, and an image switching unit 2 coupled to the surface of the image display unit 1. The image switching unit 2 further includes a first transparent substrate 21, and a first transparent conductive element 211 is provided on the surface thereof. The second transparent substrate 22 is provided with a second transparent conductive element 221 on the opposite surface of the first transparent substrate 21, and the other surface is coupled to the surface of the image display unit 1. The first electrically discoloring layer 232 is arranged in a plurality of intervals and is provided on the lower surface of the first transparent substrate 21. The second electrically discoloring layer 233 is arranged in a plurality of intervals and is provided on the upper surface of the second transparent substrate 22. The electrolyte layer 24 is arranged between the first electric discoloration layer 232 and the second electric discoloration layer 233. Among them, the first electric discoloration layer 232 and the second electric discoloration layer 233 are provided in the same arrangement direction, and the first and second electric discoloration layers are provided by the electric conduction of the first and second transparent conductive elements 211 and 221. Causes discoloration in 232 and 233. That is, when the first electric discoloration layer 232 is discolored, the second electric discoloration layer 233 is also discolored. Then, when the first electric discoloration layer 232 fades, the second electric discoloration layer 233 also fades. It should be noted here that the first electrical discoloration layer 232 must use a cathode discoloration member and the second electrical discoloration layer 233 must use an anode discoloration member. The same is true in the opposite case. The effect to be achieved and the characteristics of each composition structure are the same as in each of the above-mentioned examples. The detailed description here will be omitted.</p><p> This will be described with reference to FIG. In addition, since the electric discoloration layers 232 and 233 avoid hydrolysis by the electrolyte and prolong the service life, a protective layer 26 can be further provided between the electric discoloration layers 232 and 233 and the electrolyte layer 24. The member of the protective layer 26 is silicon dioxide (SiO)₂), Aluminum oxide (Al₂O₃), Tetramethyldisiloxane (C₄H₁₄OSi₂) Others A carbon-silicon oxide film or the like is provided in the above-mentioned lamination by an electroplating method or a sputtering method.</p><p> This will be described with reference to the three-dimensional decomposition mode diagram of Example 6 according to the present invention shown in FIG. As shown in the figure, the 2D / 3D image switching display device according to the present invention includes an image display unit 1 and an image switching unit 2. The image switching unit 2 further includes a first transparent substrate 21, a second transparent substrate 22, a first electrical discoloration layer 232, a first electrolyte layer 241 and a second electrical discoloration layer 233, and a second electrolyte layer 242. , Includes a transparent conductive layer 25. Among them, the first transparent conductive element 211 is provided on the lower surface of the first transparent substrate 21, and the second transparent conductive element 221 is provided on the upper surface of the second transparent substrate 22. The first electric discoloration layer 232 is provided on the lower surface of the first transparent substrate 21 by arranging a plurality of first arrangement directions at intervals, and covers the upper part of the first transparent conductive element 211, and then the first electric discoloration layer 232. The first electrolyte layer 241 is provided on the lower surface of the second transparent substrate 22, and the second electrically discoloring layer 233 is provided on the upper surface of the second transparent substrate 22 by arranging the second arrangement directions at a plurality of intervals, and is provided on the upper surface of the second transparent conductive element 221. A second electrolyte layer 242 is provided on the upper surface of the second electrically discoloring layer 233. In addition, the transparent conductive layer 25 is provided between the first electrolyte layer 241 and the second electrolyte layer 242 to electrically conduct the first transparent conductive element 211 and the second transparent conductive element 221. Therefore, the first electric discoloration layer 232 causes a discoloration change due to the electric conduction between the first transparent conductive element 211 and the transparent conductive layer 25, and the second electric discoloration layer 233 causes the electricity of the second transparent conductive element 221 and the transparent conductive layer 25. Conduction causes discoloration.</p><p> The installation method of the first and second electrically discoloring layers 232 and 233 described above is the same as that of the above-described embodiment, and the sol-gel method, the vacuum sputtering method, the electroplating method, and the laser etching method are used. It is mounted on each board using a method or the like. The members of the 1st and 2nd electrical discoloration layers 232 and 233 are anodic coloration, cathodic coloration or negative / anodic. Either the transition metal element oxide group or the organic compound combined can be selected from coloration). As the members of the first and second electrolyte layers 241, 242, a liquid state electrolyte or a solid state electrolyte can be selected. Further, when the first and second electrolyte layers 241, 242 are provided with the function of auxiliary discoloration in addition to providing ions, the member of the electrolyte layer is selected as the electrically discoloring member as described in the second embodiment. When a cathode discoloring member is selected for the electrical discoloring layer 23, the anodic discoloring member is used as the auxiliary discoloring layer, and vice versa. Therefore, when the electric discoloration layer 23 discolors, the auxiliary discoloration layer also discolors. Then, when the electric discoloration layer 23 fades, the auxiliary discoloration layer also undergoes a fading reaction. The 1st and 2nd electrolyte layers 241, 242 are arranged in a plurality of intervals according to the installation position and direction of the 1st and 2nd electric discoloration layers 232 and 233, and are provided in each stack, and are shielded by the electric discoloration layer of each layer. A better shading effect can be achieved after the area is formed.</p><p> The sixth embodiment is an installation method in which two sets of electric color changing devices are combined. The purpose is to prepare the display device for adjusting the shading angle used in the stereoscopic image display according to the viewing angle of the viewer E. Therefore, the first electric discoloration layer 232 is installed in a plurality of intervals in the first arrangement direction, and the second electric discoloration layer 233 is installed in a plurality of intervals in the second arrangement direction. Further, it is preferable that the first arrangement direction and the second arrangement direction are perpendicular to each other. The first electric discoloration layer 232 and the second electric discoloration layer 233 form a plurality of light-shielding areas arranged at intervals by voltage control. It should be noted that, as shown in FIGS. 22 and 23, the third transparent conductive layer 25 is provided with the third transparent conductive element 251 on the upper surface or the lower surface of the third transparent substrate. The 3 conductive layer 25 is provided with a third transparent conductive element 251 on the upper surface of the third transparent substrate, a fourth transparent conductive element 252 on the lower surface of the third transparent conductive substrate, and the first transparent conductive element 211 and the third transparent. The first electric discoloration layer 232 is driven by the electrical conduction of the conductive element 251 to cause discoloration. The second electrically discoloring layer 233 causes discoloration due to the conduction between the second transparent conductive element 221 and the fourth transparent conductive element 252.</p><p> The operating principle is that the display device has a sensor element (not shown) and a control element (not shown), and the sensor element and the control element are electrically conductive with each other. Among them, the sensor element is, for example, a gyroscope, and the control element electrically conducts the first transparent conductive element 211, the second transparent conductive element 221 and the transparent conductive layer 25, respectively. Among them, the sensor element detects the rotation direction (horizontal or vertical) of the display device, transmits the detection signal to the control element, and then passes the first and second transparent conductive elements 211 and 221 and the transparent conductive layer 25 via the control element. The voltage of the first electric discoloration layer 232 and the second electric discoloration layer 233 are switched to change the color. As an example, when the image display unit 1 faces the viewer E in the first arrangement direction, the first electrical discoloration layer 232 installed in the first arrangement direction is discolored. The image of the image display unit 1 has a parallax barrier formed by the first electrical discoloration layer 232, and a stereoscopic image is formed in the first arrangement direction. Then, when the image display unit 1 faces the viewer E in the second arrangement direction, the control element controls the voltage switching between the first and second transparent conductive elements 211 and 221 and the transparent conductive layer 25, and the first electricity The states of the discoloration layer 232 and the first electrolyte layer 241 are switched to cause the discolored first electric discoloration layer 232 to fade and the second electrical discoloration layer 233 to be discolored. Therefore, after the image passes through the parallax barrier formed by the second electrically discoloring layer 233, a stereoscopic image is formed in the second arrangement direction. Then, when the viewer E wants to return to the display of the planar image, he / she controls the voltage switching between the first and second transparent conductive elements 211 and 221 and the third transparent conductive layer 25, and controls the voltage switching of the first and second transparent conductive layers 232. By fading 233, the image display unit 1 is switched from a stereoscopic image to a planar image.</p><p> FIG. 21 is a three-dimensional decomposition mode diagram of Example 7 according to the present invention. As shown in the figure, the difference between this embodiment and Example 6 is that the installation positions of the first electrically discoloring layer 232 and the first electrolyte layer 241 are replaced with each other, and the second electrically discoloring layer 233 and the second electrolyte layer are replaced with each other. The installation positions of the 242 have also been replaced with each other. The operating principle of the shading angle used when displaying a stereoscopic image according to the effect to be achieved, the characteristics of the constituent members, and the viewing angle is the same as that in the sixth embodiment. However, the stacking order of the two sets of the electric discoloration devices of Examples 6 and 7 may be different. The reason is that each electrically discolored layer is voltage controlled separately. After the combination, the first arrangement direction and the second arrangement direction of the first electric discoloration layer 232 and the second electric discoloration layer 233 may be different directions. Therefore, even if the installation order of the two sets of electrolyte layers and the electrically discoloring layer is the same or different, it is within the scope of the present invention.</p><p> Further, the third transparent conductive element and the fourth conductive element can be provided on the third transparent substrate by covering the surface of the third transparent substrate (shown in FIG. 20) or by providing a gap between them. (Shown in Figure 21).</p><p> By summarizing the above description, the present invention improves the known technique and satisfies the conditions required for the patent. Therefore, the patent is filed.</p><p> What has been described above is a preferred embodiment of the present invention and does not impose any restrictions on the scope of the present invention. Those who are familiar with the present art are included in the scope of patent application of the present invention for any equivalent effect changes and modifications that do not deviate from the spirit and category of the present invention.</p>

1 Video display 2 Video switching section 21 First transparent substrate 211 ... 1st transparent conductive element 22 Second transparent substrate 221 1st transparent conductive element 23 Electrical discoloration layer 231 Shade area 232 1st electrical discoloration layer 233 2nd electrical discoloration layer 24 Electrolyte layer 241 First electrolyte layer 242 Second electrolyte layer 25 Transparent conductive layer E Viewer L Left eye image R Right eye image