Display device

Abstract

The application discloses a display device to improve display crosstalk in a three-dimensional display mode while ensuring display brightness in a two-dimensional display mode. The display device has a three-dimensional display mode and a two-dimensional display mode. The display device includes a display panel, a lens structure, and an electrochromic layer. The lens structure is located on the light-out side of the display panel and has a plurality of lens regions. The electrochromic layer is located on the light-out side of the display panel, in the lens structure, or between the display panel and the lens structure, and includes a first electrochromic part. The first electrochromic part at least overlaps the boundary between adjacent lens regions. When the display device is in the three-dimensional display mode, the first electrochromic part has a first light transmittance; when the display device is in the two-dimensional display mode, the first electrochromic part has a second light transmittance, and the first light transmittance is less than the second light transmittance.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display device. Background Technology

[0002] Naked-eye 3D display is an important development direction for next-generation display technology, which is mainly achieved by integrating lenticular lenses or liquid crystal lenses on the light-emitting side of the display panel. Currently, both lenticular lens 3D display technology and liquid crystal lens 3D display technology suffer from serious crosstalk problems in 3D display mode, namely, the problem of image aliasing between the left and right eyes due to parallax. Summary of the Invention

[0003] This application provides a display device to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a display device is provided, having a three-dimensional display mode and a two-dimensional display mode. The display device includes a display panel, a lens structure, and an electrochromic layer. The lens structure is located on the light-emitting side of the display panel and has a plurality of lens regions. The electrochromic layer is located on the light-emitting side of the display panel, either within the lens structure or between the display panel and the lens structure, and includes a first electrochromic portion. The first electrochromic portion overlaps at least at the boundary between adjacent lens regions. Wherein, when the display device is in the three-dimensional display mode, the first electrochromic portion has a first transmittance; when the display device is in the two-dimensional display mode, the first electrochromic portion has a second transmittance, wherein the first transmittance is less than the second transmittance.

[0005] Optionally, when the display panel is in three-dimensional display mode, the color of the first electrochromic section includes black; and / or, When the display panel is in the two-dimensional display mode, the first electrochromic part is colorless and transparent.

[0006] Optionally, the display device further includes a first light-transmitting electrode layer and a second light-transmitting electrode layer, wherein the electrochromic layer is located between the first light-transmitting electrode layer and the second light-transmitting electrode layer.

[0007] Optionally, when the display device is in the two-dimensional display mode, the electrode variation layer has a first refractive index, the first light-transmitting electrode layer has a second refractive index, and the second light-transmitting electrode layer has a third refractive index; The ratio of the first refractive index to at least one of the second and third refractive indices is 0.8 to 1.1.

[0008] Optionally, the first light-transmitting electrode layer, the second light-transmitting electrode layer, and the electrochromic layer are integrated inside the lens structure.

[0009] Optionally, the lens structure includes a first substrate, a second substrate, a pixel electrode layer, a common electrode layer, and a liquid crystal layer. The first substrate and the second substrate are disposed opposite to each other and close to the display panel. The pixel electrode layer and the common electrode layer are located between the first substrate and the second substrate, and the liquid crystal layer is located between the pixel electrode layer and the common electrode layer. The pixel electrode layer includes a plurality of pixel electrodes, and the plurality of first electrochromic portions overlap with the plurality of pixel electrodes respectively; The first light-transmitting electrode layer, the second light-transmitting electrode layer, and the electrochromic layer are located on the first substrate or the second substrate.

[0010] Optionally, the pixel electrode layer is located on the first substrate, and the common electrode layer is located on the second substrate; The second light-transmitting electrode layer and the electro-variable layer are located between the pixel electrode layer and the first substrate, and the pixel electrode layer is reused as the first light-transmitting electrode layer.

[0011] Optionally, the pixel electrode layer is located on the first substrate, and the common electrode layer is located on the second substrate; wherein the first light-transmitting electrode layer and the electrochromic layer are located between the common electrode layer and the second substrate, and the common electrode layer is reused as the second light-transmitting electrode layer.

[0012] Optionally, the first light-transmitting electrode layer, the second light-transmitting electrode layer, and the electrochromic layer are located between the lens structure and the display panel; the lens structure includes a plurality of cylindrical lenses arranged in one direction, and the plurality of cylindrical lenses are respectively located in the lens region; The electrochromic layer further includes a second electrochromic portion and a third electrochromic portion, wherein one of the second electrochromic portions and the third electrochromic portion overlap with one of the cylindrical lenses and are spaced apart from the first electrochromic portion along one of the directions; When the display device is in the three-dimensional display mode, at a first moment, the color of one of the second electrochromic parts includes black, and the color of the third electrochromic part is colorless and transparent; at a second moment different from the first moment, the color of one of the second electrochromic parts is colorless and transparent, and the color of the third electrochromic part includes black. When the display device is in the two-dimensional display mode, the second electrochromic part and the third electrochromic part are colorless and transparent.

[0013] Optionally, the electrochromic layer includes a solid phase change material, which is in contact with both the first and second transparent electrode layers.

[0014] In the display device of this application embodiment, when the display device is in a three-dimensional display mode, the first electrochromic section has a first transmittance; when the display device is in a two-dimensional display mode, the first electrochromic section has a second transmittance, and the first transmittance is less than the second transmittance. With this configuration, by applying different voltages to the first electrochromic section, the transmittance of the first electrochromic section can switch between the first transmittance and the second transmittance. Therefore, when the display device is in a three-dimensional display mode, the transmittance of the first electrochromic section is lower to block stray light incident at the boundary between lens areas, improving the display crosstalk problem caused by stray light; and when the display device is in a two-dimensional display mode, the transmittance of the first electrochromic section is higher to ensure that light incident at the boundary between lens areas can pass through the first electrochromic section and exit, thus ensuring the display brightness in the two-dimensional display mode. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural schematic diagram of a display device provided in an exemplary embodiment of this application; Figure 2 This is another cross-sectional structural schematic diagram of the display device provided in an exemplary embodiment of this application; Figure 3 This is a schematic diagram of the lens structure of the display device provided in the exemplary embodiment of this application when it is in three-dimensional display mode; Figure 4 This is a schematic diagram of a lens structure in an exemplary embodiment of the present application when the display device is in two-dimensional display mode; Figure 5 This is another schematic diagram of the lens structure when the display device provided in the exemplary embodiment of this application is in three-dimensional display mode; Figure 6 This is another schematic diagram of the lens structure when the display device provided in the exemplary embodiment of this application is in two-dimensional display mode; Figure 7 This is another schematic diagram of the lens structure and electrochromic layer of the display device provided in the exemplary embodiment of this application at the first moment in the three-dimensional display mode; Figure 8 This is another schematic diagram of the lens structure and electrochromic layer of the display device provided in the exemplary embodiment of this application at the second moment of the three-dimensional display mode; Figure 9This is another schematic diagram of the lens structure and electrochromic layer of the display device provided in the exemplary embodiment of this application at a second moment when they are in three-dimensional display mode; Figure 10 This is another schematic diagram of the lens structure and electrochromic layer of the display device provided in the exemplary embodiment of this application at a second moment when the display is in three-dimensional display mode.

[0016] Explanation of reference numerals in the attached figures: 100. Display device; 10. Display panel; 11. Liquid crystal cell; 12. First polarizer; 13. Second polarizer; 20. Lens structure; 201. Lens area; 21. First substrate; 22. Second substrate; 23. Pixel electrode layer; 231. Pixel electrode; 24. Common electrode layer; 25. Liquid crystal layer; 26. Cylindrical lens; 27. Transmitting substrate; 30. Backlight module; 40. Electrochromic layer; 41. First electrochromic section; 42. Second electrochromic section; 43. Third electrochromic section; 50. First light-transmitting electrode layer; 60. Second transparent electrode layer; 70. Leveling layer; 71. Overburden layer; 80. Anti-reflective layer; 81. First anti-reflective layer; 82. Second anti-reflective layer. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0018] Please see Figure 1 and Figure 2 This application provides a display device 100. The display device 100 has a three-dimensional display mode and a two-dimensional display mode, and can switch between the three-dimensional display mode and the two-dimensional display mode to meet a variety of different display function requirements.

[0019] Please see Figure 1 and Figure 2 The display device 100 includes a display panel 10 and a lens structure 20, with the lens structure 20 located on the light-emitting side of the display panel 10.

[0020] In some embodiments, please refer to Figure 1The display panel 10 can be an active light-emitting display panel, which includes, but is not limited to, organic light-emitting diode display panels, quantum dot display panels, micro-light-emitting diode (Micro-LED) display panels and sub-millimeter light-emitting diode (Mini-LED) display panels.

[0021] In some embodiments, please refer to Figure 2 The display panel 10 may include a liquid crystal cell 11, a first polarizer 12, and a second polarizer 13, with the liquid crystal cell 11 located between the first polarizer 12 and the second polarizer 13. Meanwhile, the display device 100 also includes a backlight module 30, located on the light-incident side of the display panel 10, with the first polarizer 12 disposed close to the backlight module 30.

[0022] In some embodiments, please refer to Figures 3-10 The lens structure 20 has a plurality of lens regions 201. In some embodiments, the plurality of lens regions 201 are arranged along a direction X, for example, along the length or width of the display device 100, so that the display device 100 can realize a three-dimensional display mode in a direction X.

[0023] In other embodiments, the multiple lens regions 201 may also be arranged along two intersecting directions.

[0024] In some embodiments, please refer to Figures 1 to 10 The display device 100 may further include an electrochromic layer 40, which is located on the light-emitting side of the display panel 10, within the lens structure 20, or between the display panel 10 and the lens structure 20, and includes a first electrochromic portion 41. The first electrochromic portion 41 overlaps at least at the boundary between adjacent lens regions 201. When the display device 100 is in a three-dimensional display mode, the first electrochromic portion 41 has a first transmittance; when the display device 100 is in a two-dimensional display mode, the first electrochromic portion 41 has a second transmittance, and the first transmittance is less than the second transmittance.

[0025] In the display device 100 of this application embodiment, by applying different voltages to the first electrochromic section 41, the transmittance of the first electrochromic section 41 can be switched between a first transmittance and a second transmittance. Therefore, when the display device 100 is in three-dimensional display mode, the transmittance of the first electrochromic section 41 is lower to block stray light incident on the junction between the lens regions 201, thereby improving the display crosstalk problem caused by stray light; and when the display device 100 is in two-dimensional display mode, the transmittance of the first electrochromic section 41 is higher to ensure that light incident on the junction between the lens regions 201 can pass through the first electrochromic section 41 and exit, thereby ensuring the display brightness in two-dimensional display mode.

[0026] It should be noted that when the first electrochromic part 41 of the electrochromic layer 40 is in the first refractive index or the second refractive index under the action of voltage, there is no need to continue to apply voltage to the first electrochromic part 41. The state of the first electrochromic part 41 can be maintained. That is, the first electrochromic part 41 maintains the first refractive index or the second refractive index without the action of voltage, thereby reducing the driving power consumption of the electrochromic layer 40.

[0027] In some embodiments, the first transmittance may be less than or equal to 20%, or the first transmittance may be less than or equal to 18%, or the first transmittance may be less than or equal to 15%, or the first transmittance may be less than or equal to 10%, or the first transmittance may be less than or equal to 8%, or the first transmittance may be less than or equal to 5%, or the first transmittance may be less than or equal to 1%, or the first transmittance may be less than or equal to 0.1%, or the first transmittance may be less than or equal to 0.01%.

[0028] In some embodiments, the second transmittance may be greater than or equal to 75%, or the second transmittance may be greater than or equal to 80%, 85%, 90%, 95%, or 95%.

[0029] In some embodiments, the difference between the first transmittance and the second transmittance can be greater than or equal to 40% to increase the difference between the first transmittance and the second transmittance, thereby improving the occlusion effect of the first electrochromic unit 41 in three-dimensional display mode and improving the light transmission effect of the first electrochromic unit 41 in two-dimensional display mode. Optionally, the difference between the first transmittance and the second transmittance can be greater than or equal to 45%, or 50%, or 55%.

[0030] In some embodiments, please refer to Figure 3 , Figure 5 as well as Figures 7-10 When the display panel 10 is in three-dimensional display mode, the color of the first electrochromic unit 41 includes black. Since the black first electrochromic unit 41 has a better light-blocking effect, it better blocks stray light incident on the boundary between the lens areas 201, thus improving the display crosstalk problem caused by stray light.

[0031] In some embodiments, the first electrochromic section 41 may be opaque.

[0032] In some embodiments, when the display panel 10 is in a three-dimensional display mode, the color of the first electrochromic part 41 may also include dark colors and gray, etc., and dark colors may include, but are not limited to, dark blue, dark red and dark yellow.

[0033] In some embodiments, please refer to Figure 4 and Figure 6 When the display panel 10 is in two-dimensional display mode, the first electrochromic section 41 is colorless and transparent. Since the colorless and transparent first electrochromic section 41 has a higher transmittance of light incident on the junction between the lens areas 201, there is light at the junction between the lens areas 201 in two-dimensional display mode, which improves the overall brightness and brightness uniformity in two-dimensional display mode.

[0034] In some embodiments, please refer to Figures 3-10 The display device 100 further includes a first light-transmitting electrode layer 50 and a second light-transmitting electrode layer 60, with an electrochromic layer 40 located between the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60. This arrangement allows for the generation of a voltage difference through the voltages transmitted through the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60, and causes variations in this voltage difference to at least adjust the color of the electrochromic layer 40. Furthermore, the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 are light-transmitting, reducing the risk of them blocking the light emitted from the display panel 10 in a two-dimensional display module.

[0035] In some embodiments, the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 may comprise a transparent conductive material, which may comprise at least one of indium tin oxide and indium zinc oxide. In one example, the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 may comprise indium tin oxide. In some embodiments, the thickness of the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 may be 100 angstroms to 1000 angstroms.

[0036] In some embodiments, when the display device 100 is in a two-dimensional display mode, the electrode variation layer has a first refractive index, the first light-transmitting electrode layer 50 has a second refractive index, and the second light-transmitting electrode layer 60 has a third refractive index; wherein the ratio of the first refractive index to at least one of the second and third refractive indices is 0.8 to 1.1. Thus, when the display device 100 is in a two-dimensional display mode and the first electrochromic section 41 has high light transmittance, the voltage difference between the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 is further optimized so that the first refractive index of the entire electrode variation layer is closer to the refractive index of at least one of the first and second light-transmitting electrode layers 50. This improves the problem of light emitted from the display panel 10 reflecting at the interface between the electrode variation layer and at least one of the first and second light-transmitting electrode layers 50 and 60, further enhancing the overall brightness of the display device 100 in the two-dimensional display mode.

[0037] In one example, the ratio of the first refractive index to the second refractive index is 0.8 to 1.1, and the ratio of the first refractive index to the third refractive index is 0.8 to 1.1.

[0038] In some embodiments, the electrochromic layer 40 comprises a solid phase change material and is in contact with both the first transparent electrode layer 50 and the second transparent electrode layer 60. By utilizing the change in the crystal phase of the solid phase change material, not only the color of the electrochromic layer 40 can be adjusted, but also its refractive index can be adjusted.

[0039] In some embodiments, the solid phase change material may include chalcogenide compounds. In some embodiments, the solid phase change material may include, but is not limited to, Ge2Sb2Te5. Amorphous Ge2Sb2Te5 exhibits weak absorption of visible light and is nearly transparent, while crystalline Ge2Sb2Te5 is deep black.

[0040] In some embodiments, the thickness of the electrochromic layer 40 can be 10 nanometers to 50 micrometers. When the electrochromic layer 40 is thinner, the difficulty of integrating the electrochromic layer 40 into other structures such as the lens structure 20 can be reduced. When the electrochromic layer 40 is thicker, the loss of light emitted by the display panel 10 caused by the electrochromic layer 40 is reduced.

[0041] In some embodiments, please refer to Figure 1 as well as Figures 3-6 The first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electro-chromic layer 40 are integrated inside the lens structure 20. With this configuration, the first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electro-chromic layer 40 do not need to occupy additional thickness of the display device 100, which is beneficial for reducing the thickness of the display device 100.

[0042] In some embodiments, please refer to Figure 2 as well as Figures 7-9 The first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electro-variable layer 40 can also be located between the lens structure 20 and the display panel 10 to improve the design freedom of the first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electro-variable layer 40.

[0043] In some embodiments, please refer to Figures 3-6 The lens structure 20 includes a first substrate 21, a second substrate 22, a pixel electrode layer 23, a common electrode layer 24, and a liquid crystal layer 25. The first substrate 21 and the second substrate 22 are disposed opposite to each other and close to the display panel 10. The pixel electrode layer 23 and the common electrode layer 24 are located between the first substrate 21 and the second substrate 22, and the liquid crystal layer 25 is located between the pixel electrode layer 23 and the common electrode layer 24. The pixel electrode layer 23 includes a plurality of pixel electrodes 231.

[0044] When multiple lens regions 201 are arranged along one direction X, multiple pixel electrodes 231 are also arranged along one direction X. Each pixel electrode 231 can be strip-shaped.

[0045] Please see Figure 3 and Figure 5 When the display device 100 is in three-dimensional display mode, the electric field generated by the voltage difference between the common electrode layer 24 and the pixel electrode layer 23 drives the liquid crystal in the liquid crystal layer 25 to deflect, forming multiple liquid crystal lenses in multiple lens regions 201 respectively. The junction of the liquid crystal lenses is usually located at the location of the pixel electrode 231.

[0046] Please see Figure 4 and Figure 6 When the display device 100 is in two-dimensional display mode, the voltage difference between the common electrode layer 24 and the pixel electrode layer 23 can be 0 or close to 0, and the liquid crystal molecules in the liquid crystal layer 25 will not be deflected, so that the refractive index of the entire liquid crystal layer 25 is consistent at different positions.

[0047] In some embodiments, please refer to Figure 3 and Figure 5 Multiple first electrochromic units 41 overlap with multiple pixel electrodes 231 respectively. Since the lens structure 20 is a liquid crystal lens and the display device 100 is in three-dimensional display mode, the junction of the liquid crystal lens is usually located at the position of the pixel electrode 231. The overlap of the first electrochromic units 41 with the pixel electrode 231 causes the first electrochromic units 41, which have lower light transmittance in three-dimensional display mode, to block the light at the junction between the liquid crystal lenses.

[0048] When multiple pixel electrodes 231 are also arranged along one direction X, multiple first electrochromic parts 41 can also be arranged along one direction X, and each first electrochromic part 41 is strip-shaped.

[0049] In some embodiments, please refer to Figures 3-6 The first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electro-variable layer 40 are located on the first substrate 21 or the second substrate 22, so that the first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electro-variable layer 40 can be integrated into the lens structure 20.

[0050] In some embodiments, please refer to Figure 3 and Figure 4The pixel electrode layer 23 is located on the first substrate 21, the common electrode layer 24 is located on the second substrate 22, and the second light-transmitting electrode layer 60 is disposed close to the display panel. The second light-transmitting electrode layer 60 and the electrochromic layer 40 are located between the pixel electrode layer 23 and the first substrate 21, and the pixel electrode layer 23 is reused as the first light-transmitting electrode layer 50. This configuration integrates the first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electrochromic layer 40 within the liquid crystal lens, and reuses the pixel electrode 231 in the liquid crystal lens as the first light-transmitting electrode layer 50 of the electrochromic layer 40, reducing the number of film layers in the display device 100 and simplifying its structure.

[0051] It should be noted that when the pixel electrode 231 is reused as the first light-transmitting electrode layer 50, the pixel electrode layer 23 is connected to a 0V voltage or not connected to a voltage, and the common electrode layer 24 is connected to a positive voltage. The electric field generated by the voltage difference causes multiple liquid crystal lenses to be formed in the liquid crystal layer 25.

[0052] In some embodiments, please refer to Figure 5 and Figure 6 The pixel electrode layer 23 is located on the first substrate 21, the common electrode layer 24 is located on the second substrate 22, and the second light-transmitting electrode layer 60 is disposed close to the display panel. The first light-transmitting electrode layer 50 and the electrochromic layer 40 are located between the common electrode layer 24 and the second substrate 22, and the common electrode layer 24 is reused as the second light-transmitting electrode layer 60. This configuration integrates the first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electrochromic layer 40 into the liquid crystal lens, and reuses the pixel electrode 231 in the liquid crystal lens as the second light-transmitting electrode layer 60 of the electrochromic layer 40, reducing the number of film layers in the display device 100 and simplifying its structure. Furthermore, since the first light-transmitting electrode layer 50 and the electrochromic layer 40 are located between the common electrode layer 24 and the second substrate 22, the common electrode layer 24 can shield the electric field corresponding to the voltage difference between the first light-transmitting electrode layer 50 and the common electrode layer 24, reducing the risk of this electric field affecting the shape of the liquid crystal lens.

[0053] In some embodiments, please refer to Figures 3-6 The display device 100 may further include one or more planarization layers 70, which are located between the first substrate 21 and the second substrate 22 and at least cover the electrochromic layer 40. At least one of the pixel electrode layer 23 and the common electrode layer 24 is located on the planarization layer 70.

[0054] In some embodiments, please refer to Figure 3 and Figure 4The display device 100 may further include a planarization layer 70, which covers the electrochromic layer 40 and the second light-transmitting electrode layer 60. The pixel electrode layer 23 is located on the planarization layer 70, such that the plurality of pixel electrodes 231 of the pixel electrode layer 23 are located on the same plane, and the shapes of the plurality of liquid crystal lenses formed by the voltage difference between the plurality of pixel electrodes 231 and the common electrode layer 24 tend to be consistent. Furthermore, the planarization layer 70 can also improve the consistency of the thickness of the liquid crystal layer 25 at different locations, thereby making the heights of the different liquid crystal lenses tend to be consistent.

[0055] In some embodiments, please refer to Figure 5 and Figure 6 The display device 100 may further include a planarization layer 70, which covers the electrochromic layer 40 and the first light-transmitting electrode layer 50. A common electrode layer 24 is located on the planarization layer 70, such that the common electrode layer 24 is on the same plane, and the shapes of the multiple liquid crystal lenses formed by the voltage difference between the multiple pixel electrodes 231 and the common electrode layer 24 tend to be consistent. Furthermore, the planarization layer 70 can also improve the consistency of the thickness of the liquid crystal layer 25 at different locations, thereby making the heights of the different liquid crystal lenses tend to be consistent.

[0056] In some embodiments, the thickness of the planarization layer 70 can be 1 micrometer to 3 micrometers to ensure the planarization effect of the planarization layer 70.

[0057] In some embodiments, please refer to Figure 2 as well as Figures 6-10 The first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electrochromic layer 40 are located between the lens structure 20 and the display panel 10.

[0058] In some embodiments, please refer to Figures 6-10 When multiple lens regions 201 are arranged along one direction X, the lens structure 20 includes multiple cylindrical lenses 26 arranged along one direction X, and the multiple cylindrical lenses 26 are respectively located in the multiple lens regions 201.

[0059] In some embodiments, the cylindrical lens 26 is cylindrical, and the surface of the cylindrical lens 26 facing away from the display panel 10 can be an arcuate surface, including at least one of a circular arcuate surface and an elliptical arcuate surface.

[0060] In some embodiments, the lens structure 20 may further include a light-transmitting substrate 27, with a plurality of cylindrical lenses 26 located on the light-transmitting substrate 27.

[0061] In some embodiments, please refer to Figures 6-10The electrochromic layer 40 further includes a second electrochromic section 42 and a third electrochromic section 43. One second electrochromic section 42 and one third electrochromic section 43 overlap with a cylindrical lens 26 and are spaced apart from the first electrochromic section 41 along a direction X. When the display device 100 is in three-dimensional display mode, at a first moment, the color of one second electrochromic section 42 is black, and the color of the third electrochromic section 43 is colorless and transparent (see...). Figure 7 Furthermore, at a second time point different from the first time point, the second electrochromic unit 42 is colorless and transparent, while the third electrochromic unit 43 includes black in color (see...). Figure 8 With this configuration, when the display device 100 displays the left-eye image corresponding to the left eye at the first moment, the second electrochromic unit 42 can block the light incident on the right eye, allowing the light to pass through the third electrochromic unit 43 and reach the user's left eye, thus enabling the user to view the left-eye image and reducing the risk of interference from light incident on the right eye. Similarly, when the display device 100 displays the right-eye image corresponding to the right eye at the second moment, the third electrochromic unit 43 can block the light incident on the left eye, allowing the light to pass through the second electrochromic unit 42 and reach the user's right eye, thus enabling the user to view the right-eye image and reducing the risk of interference from light incident on the left eye. In other words, through the zonal control of the electrochromic layer 40, the problem of crosstalk between the left-eye and right-eye images in the three-dimensional display mode is further improved.

[0062] Furthermore, when the display device 100 is in two-dimensional display mode, the second electrochromic unit 42 and the third electrochromic unit 43 are colorless and transparent. In this way, the light emitted by the display panel 10 can pass through the second electrochromic unit 42 and the third electrochromic unit 43, thereby increasing the display brightness of the display device 100 in two-dimensional display mode.

[0063] In some embodiments, please refer to 3~ Figure 10 At least one of the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 includes a plurality of spaced electrode portions. With this configuration, by using at least one of the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 to form spaced electrode portions, independent driving of the first electrostriction unit 41 to the third electrostriction unit 43 can be achieved.

[0064] In some embodiments, please refer to Figures 3-7 The first light-transmitting electrode layer 50 includes a first electrode portion overlapping the first electrochromic portion 41, and the second light-transmitting electrode layer 60 includes a second electrode portion overlapping the first electrochromic portion 41; see also Figure 7 and Figure 8The first light-transmitting electrode layer 50 further includes a third electrode portion overlapping the second electrochromic portion 42, and the second light-transmitting electrode layer 60 includes a fourth electrode portion overlapping the second electrochromic portion 42; see also Figure 7 and Figure 8 The first light-transmitting electrode layer 50 also includes a fifth electrode portion overlapping with the third electro-changing portion 43, and the second light-transmitting electrode layer 60 includes a sixth electrode portion overlapping with the second electro-changing portion 42.

[0065] In some embodiments, please refer to Figure 9 and Figure 10 One of the first light-transmitting electrode layer 50 and the second light-transmitting electrode layer 60 is a whole surface, thereby omitting the patterning process and simplifying the manufacturing process of the display device 100.

[0066] In some embodiments, please refer to Figure 10 The second light-transmitting electrode layer 60 is close to the display panel 10. The display device 100 may also include one or more anti-reflection layers 80. At least one anti-reflection layer 80 may be located between the second light-transmitting electrode layer 60 and the display panel 10, and / or, at least one anti-reflection layer 80 may be located between the first light-transmitting electrode layer 50 and the lens structure 20, so as to reduce the light loss between the second light-transmitting electrode layer 60 and the display panel 10, and / or, between the first light-transmitting electrode layer 50 and the lens structure 20, and improve the light output efficiency of the display device 100 when it is in two-dimensional and three-dimensional display modes.

[0067] In one example, the multilayer antireflection layer 80 includes a first antireflection layer 81 and a second antireflection layer 82. The first antireflection layer 81 is located between the second polarizer 13 and the second light-transmitting electrode layer 60, and the second antireflection layer 82 is located between the first light-transmitting electrode layer 50 and the lens structure 20.

[0068] In some embodiments, each antireflection layer 80 may consist of multiple different film layers, which may include at least one of niobium oxide, titanium oxide, silicon dioxide, silicon nitride, tantalum oxide, and aluminum oxide.

[0069] In some embodiments, the first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electrochromic layer 40 may be integrated on the lens structure 20.

[0070] In some embodiments, the display device 100 may further include a cover layer 71 that covers the second light-transmitting electrode layer 60 to protect the first light-transmitting electrode layer 50, the second light-transmitting electrode layer 60, and the electrostrictive layer 40. When the second light-transmitting electrode layer 60 includes a plurality of spaced electrode portions, the cover layer 71 may also fill the gaps between adjacent electrode portions of the second light-transmitting electrode layer 60. Furthermore, when the first light-transmitting electrode layer 50 also includes a plurality of spaced electrode portions, the cover layer 71 may also fill the gaps between adjacent electrode portions of the first light-transmitting electrode layer 50.

[0071] In some embodiments, the cover layer 71 may also be adhesive to facilitate fixation to the display panel 10. In some embodiments, the cover layer 71 may include at least one of a planarization layer and an adhesive layer.

[0072] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0073] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0074] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0075] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display device, characterized in that, The display device has a three-dimensional display mode and a two-dimensional display mode, and the display device includes: Display panel; The lens structure is located on the light-emitting side of the display panel and has multiple lens areas; An electrochromic layer is located on the light-emitting side of the display panel, within the lens structure or between the display panel and the lens structure, and includes a first electrochromic portion; the first electrochromic portion overlaps at least with the boundary between adjacent lens regions; When the display device is in the three-dimensional display mode, the first electrochromic part has a first transmittance; when the display device is in the two-dimensional display mode, the first electrochromic part has a second transmittance, and the first transmittance is less than the second transmittance.

2. The display device according to claim 1, characterized in that, When the display panel is in three-dimensional display mode, the color of the first electrochromic section includes black; and / or, When the display panel is in the two-dimensional display mode, the first electrochromic part is colorless and transparent.

3. The display device according to claim 1, characterized in that, The display device further includes a first light-transmitting electrode layer and a second light-transmitting electrode layer, and the electro-variable layer is located between the first light-transmitting electrode layer and the second light-transmitting electrode layer.

4. The display device according to claim 3, characterized in that, When the display device is in the two-dimensional display mode, the electrode changing layer has a first refractive index, the first light-transmitting electrode layer has a second refractive index, and the second light-transmitting electrode layer has a third refractive index. The ratio of the first refractive index to at least one of the second and third refractive indices is 0.8 to 1.

1.

5. The display device according to claim 3, characterized in that, The first light-transmitting electrode layer, the second light-transmitting electrode layer, and the electrochromic layer are integrated inside the lens structure.

6. The display device according to claim 5, characterized in that, The lens structure includes a first substrate, a second substrate, a pixel electrode layer, a common electrode layer, and a liquid crystal layer. The first substrate and the second substrate are disposed opposite to each other and close to the display panel. The pixel electrode layer and the common electrode layer are located between the first substrate and the second substrate, and the liquid crystal layer is located between the pixel electrode layer and the common electrode layer. The pixel electrode layer includes a plurality of pixel electrodes, and the plurality of first electrochromic portions overlap with the plurality of pixel electrodes respectively; The first light-transmitting electrode layer, the second light-transmitting electrode layer, and the electrochromic layer are located on the first substrate or the second substrate.

7. The display device according to claim 6, characterized in that, The pixel electrode layer is located on the first substrate, and the common electrode layer is located on the second substrate; The second light-transmitting electrode layer and the electrochromic layer are located between the pixel electrode layer and the first substrate, and the pixel electrode layer is reused as the first light-transmitting electrode layer.

8. The display device according to claim 6, characterized in that, The pixel electrode layer is located on the first substrate, and the common electrode layer is located on the second substrate; The first light-transmitting electrode layer and the electrochromic layer are located between the common electrode layer and the second substrate, and the common electrode layer is reused as the second light-transmitting electrode layer.

9. The display device according to claim 3, characterized in that, The first light-transmitting electrode layer, the second light-transmitting electrode layer, and the electrochromic layer are located between the lens structure and the display panel; the lens structure includes a plurality of cylindrical lenses arranged in one direction, and the plurality of cylindrical lenses are respectively located in the lens region; The electrochromic layer further includes a second electrochromic portion and a third electrochromic portion, wherein one of the second electrochromic portions and the third electrochromic portion overlap with one of the cylindrical lenses and are spaced apart from the first electrochromic portion along one of the directions; When the display device is in the three-dimensional display mode, at a first moment, the color of one of the second electrochromic parts includes black, and the color of the third electrochromic part is colorless and transparent; at a second moment different from the first moment, the color of one of the second electrochromic parts is colorless and transparent, and the color of the third electrochromic part includes black. When the display device is in the two-dimensional display mode, the second electrochromic part and the third electrochromic part are colorless and transparent.

10. The display device according to claim 1, characterized in that, The electrochromic layer comprises a solid phase change material and is in contact with both the first and second transparent electrode layers.

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