Display device

Abstract

The invention discloses a display device which comprises a light-emitting element array and a color resistor array, the light-emitting element array comprises a plurality of light-emitting elements, a plurality of color resistors comprise a first color resistor and a second color resistor, the first color resistor is located in the center area of the color resistor array, and the second color resistor is located on the side, close to the edge of the color resistor array, of the first color resistor. The light-emitting element comprises a light-emitting area, the color resistor comprises a central color resistor branch overlapped with the light-emitting area, and the average thickness of the central color resistor branch in the first color resistor is larger than that of the central color resistor branch in the second color resistor. According to the display device provided by the embodiment of the invention, the light transmittance of the central color resistor branch in the first color resistor is smaller than the light transmittance of the central color resistor branch in the second color resistor, the display brightness of the central area is reduced, the display brightness of the area except the central area is improved, the display brightness difference caused by the light receiving taper angle difference is compensated, and the display effect is improved. The brightness difference at positions with different image heights is reduced, and the overall brightness uniformity of the display device is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display device. Background Art

[0002] A near-eye display system, such as a virtual reality display system or an augmented reality display system, can be placed on a user's head and allows the user to observe an image in the display. For example, the near-eye display system can provide actual scene information for an airplane pilot or a car driver and allows the user to observe the display image while observing the actual scene.

[0003] The near-eye display system extracts light from different positions and different viewing angle ranges of the display screen and converts it into a display image on the imaging surface of the optical engine system. Since the brightness of the light in different positions and different viewing angle ranges of the display screen is not the same, the uniformity of the near-eye display image is poor, affecting the display effect. Summary of the Invention

[0004] The present invention provides a display device to solve the problem of poor display uniformity.

[0005] The present invention provides a display device, including a light-emitting element array and a color filter array located on the light-emitting side of the light-emitting element array;

[0006] The light-emitting element array includes a plurality of light-emitting elements, the color filter array includes a plurality of color filters, and the plurality of color filters and the plurality of light-emitting elements are arranged in one-to-one correspondence;

[0007] The plurality of color filters includes a first color filter and a second color filter. The first color filter is located in the central area of the color filter array, and the second color filter is located on one side of the first color filter close to the edge of the color filter array;

[0008] The light-emitting element includes a light-emitting area, and the color filter includes a central color filter part overlapping with the light-emitting area;

[0009] The average thickness of the central color filter part in the first color filter is greater than the average thickness of the central color filter part in the second color filter.

[0010] Optionally, along the direction from the first color filter to the second color filter, the average thickness of the central color filter part gradually decreases.

[0011] Optionally, the central color filter part includes a first central color filter part and / or a second central color filter part, and the thickness of the first central color filter part is greater than the thickness of the second central color filter part;

[0012] The ratio between the area of the first central color filter section in the first color filter and the area of the light-emitting region of the corresponding light-emitting element is greater than the ratio between the area of the first central color filter section in the second color filter and the area of the light-emitting region of the corresponding light-emitting element;

[0013] The ratio between the area of the second central color filter section in the first color filter and the area of the light-emitting region of the corresponding light-emitting element is less than the ratio between the area of the second central color filter section in the second color filter and the area of the light-emitting region of the corresponding light-emitting element.

[0014] Optionally, along the direction from the first color filter to the second color filter, the ratio between the area of the first central color filter section and the area of the light-emitting region of the corresponding light-emitting element gradually decreases, and the ratio between the area of the second central color filter section and the area of the light-emitting region of the corresponding light-emitting element gradually increases.

[0015] Optionally, the second color filter includes a transition color filter and an edge color filter. The edge color filter is located in the edge region of the color filter array, and the transition color filter is located between the first color filter and the edge color filter;

[0016] The ratio between the area of the first central color filter section in the first color filter and the area of the light-emitting region of the corresponding light-emitting element is equal to 1;

[0017] The ratio between the area of the second central color filter section in the edge color filter and the area of the light-emitting region of the corresponding light-emitting element is equal to 1;

[0018] The ratio between the area of the first central color filter section in the transition color filter and the area of the light-emitting region of the corresponding light-emitting element is greater than 0 and less than 1; the ratio between the area of the second central color filter section in the transition color filter and the area of the light-emitting region of the corresponding light-emitting element is greater than 0 and less than 1.

[0019] Optionally, the second color filter includes a transition color filter and an edge color filter. The edge color filter is located in the edge region of the color filter array, and the transition color filter is located between the first color filter and the edge color filter;

[0020] The plurality of light-emitting elements include a first light-emitting element corresponding to the first color filter and an edge light-emitting element corresponding to the edge color filter. The ratio between the brightness of the edge light-emitting element at its main light ray angle and the brightness of the first light-emitting element at its main light ray angle is u;

[0021] The light transmittance of the first central color resistance section is T1, and the light transmittance of the second central color resistance section is T2, where T1 = u × T2.

[0022] Optionally, the plurality of light-emitting elements further includes a transition light-emitting element corresponding to the transition color resistance;

[0023] The ratio of the luminance of the transition light-emitting element at its main ray angle to the luminance of the first light-emitting element at its main ray angle is a, the area of the first central color resistance section in the corresponding transition color resistance is S1, and the area of the second central color resistance section is S2;

[0024]

[0025] Optionally, the first central color resistance section is a rotationally symmetric figure;

[0026] The second central color resistance section is a rotationally symmetric figure.

[0027] Optionally, the color resistance further includes a peripheral color resistance section disposed around the central color resistance section;

[0028] The thickness of the peripheral color resistance section is the same as the thickness of the first central color resistance section; or, the thickness of the peripheral color resistance section is the same as the thickness of the second central color resistance section.

[0029] Optionally, in the central color resistance section, the central color resistance section has the same thickness at different positions thereof.

[0030] Optionally, the color resistance further includes a peripheral color resistance section disposed around the central color resistance section;

[0031] In the color resistance, the thickness of the peripheral color resistance section is equal to the thickness of the central color resistance section.

[0032] Optionally, the light-emitting region includes a light-emitting center, and the color resistance includes a color resistance center;

[0033] The light-emitting center of the light-emitting region coincides with the color resistance center of the corresponding color resistance;

[0034] The part of the color resistance that overlaps with the light-emitting region in the thickness direction of the display device is the central color resistance section.

[0035] Optionally, the plurality of light-emitting elements includes a first light-emitting element corresponding to the first color resistance and a second light-emitting element corresponding to the second color resistance;

[0036] The light-emitting region of the first light-emitting element includes a first light-emitting center, and the first color filter includes a first color filter center, and the first light-emitting center coincides with the first color filter center;

[0037] The light-emitting region of the second light-emitting element includes a second light-emitting center, and the second color filter includes a second color filter center; along the direction from the first color filter to the second color filter, the second color filter center of the second color filter and the second light-emitting center of the corresponding second light-emitting element are offset from each other, and the second color filter center is located on the side of the second light-emitting center away from the first light-emitting center;

[0038] The portion of the color filter that overlaps with the light-emitting region at the principal ray angle of the corresponding light-emitting element is the central color filter segment.

[0039] Optionally, the areas of the multiple color filters are the same.

[0040] The display device provided by the embodiment of the present invention differentiates the central color filter segments of the first color filter located in the central region of the color filter array and the central color filter segments of the second color filter near the edge of the color filter array, so that the average thickness of the central color filter segment in the first color filter is greater than the average thickness of the central color filter segment in the second color filter, so that the light transmittance of the central color filter segment in the first color filter is less than the light transmittance of the central color filter segment in the second color filter, thereby reducing the display brightness in the central region (the position with a lower image height), increasing the display brightness in the region other than the central region (the position with a higher image height), compensating for the display brightness difference caused by the difference in the light collection cone angle, reducing the brightness difference at different image height positions, and improving the overall brightness uniformity of the display device.

[0041] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0043] Figure 1 It is a schematic diagram of the relative brightness of a display device in the related art at different points;

[0044] Figure 2 It is a schematic diagram of the light collection curve of an optical engine in the related art;

[0045] Figure 3 Schematic structural diagram of a display device provided by an embodiment of the present invention;

[0046] Figure 4 is Figure 3 Schematic cross-sectional structure diagram along the A-A' direction;

[0047] Figure 5 Schematic partial cross-sectional structure diagram of a display device provided by an embodiment of the present invention;

[0048] Figure 6 Schematic structural diagram of another display device provided by an embodiment of the present invention;

[0049] Figure 7 is Figure 6 Schematic cross-sectional structure diagram along the B-B' direction;

[0050] Figure 8 Schematic structural diagram of a first color filter provided by an embodiment of the present invention;

[0051] Figure 9 Schematic cross-sectional structure diagram of a first color filter provided by an embodiment of the present invention;

[0052] Figure 10 Schematic structural diagram of an edge color filter provided by an embodiment of the present invention;

[0053] Figure 11 Schematic cross-sectional structure diagram of an edge color filter provided by an embodiment of the present invention;

[0054] Figure 12 Schematic structural diagram of a transition color filter provided by an embodiment of the present invention;

[0055] Figure 13 Schematic cross-sectional structure diagram of a transition color filter provided by an embodiment of the present invention;

[0056] Figure 14 Schematic cross-sectional structure diagram of another first color filter provided by an embodiment of the present invention;

[0057] Figure 15 Schematic cross-sectional structure diagram of another transition color filter provided by an embodiment of the present invention;

[0058] Figure 16 Schematic cross-sectional structure diagram of another edge color filter provided by an embodiment of the present invention;

[0059] Figure 17 Schematic structural diagram of yet another display device provided by an embodiment of the present invention;

[0060] Figure 18 is Figure 17Schematic cross-sectional structure diagram along the C-C' direction. Detailed implementation mode

[0061] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0062] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0063] Existing near-eye display devices generally include an optical engine, which can be understood as an optical structure that assists the light emitted by the display panel to enter the user's eyes. The near-eye display optical system extracts light from different positions and different viewing angle ranges of the display device and converts it into a display image on the imaging surface of the optical engine system. Since the brightness of the light in different positions and different viewing angle ranges of the display screen is not the same, the uniformity of the display image of the near-eye display device is low.

[0064] Specifically, Figure 1 It is a schematic diagram of the relative brightness of a display device in the related art at different points. Figure 2 It is a schematic diagram of the light collection curve of an optical engine in the related art, as Figure 1 and Figure 2 shown, the image heights corresponding to different points of the display device are different, that is, the distances of different points from the central position of the display device are different, and different cone angle ranges of light will correspond to different image heights, that is, the central angle of the light collection cone angle (Chief Ray Angle, CRA) varies with the image height.

[0065] Among them, as Figure 1As shown, when the luminance at the image height of 0 is normalized to 1, the relative luminance (i.e., the numbers shown in the figure) can be understood as the relative value with respect to the luminance at the image height of 0. The relative luminance varies with different positions and shows a gradually changing trend as the position shifts.

[0066] As Figure 2 shown, as the image height gradually increases, the CRA will gradually increase, that is, the angle between the main light-receiving axis and the perpendicular line in the direction perpendicular to the center of the display device will gradually increase, resulting in different light utilization rates at different image heights. This leads to the phenomenon that the display luminance in the middle area of the display device is significantly greater than that in the edge area (as Figure 1 shown), which is not conducive to achieving the display uniformity effect of the display device.

[0067] Based on the above technical problems, Figure 3 is a schematic structural diagram of a display device provided by an embodiment of the present invention, Figure 4 is Figure 3 a schematic cross-sectional structural diagram along the A-A' direction. As Figure 3 and Figure 4 shown, an embodiment of the present invention provides a display device, which includes a light-emitting element array 1 and a color filter array 2 located on the light-emitting side of the light-emitting element array 1. The light-emitting element array 1 includes a plurality of light-emitting elements 10, the color filter array 2 includes a plurality of color filters 20, and the plurality of color filters 20 and the plurality of light-emitting elements 10 are arranged in one-to-one correspondence. The plurality of color filters 20 include a first color filter 201 and a second color filter 202. The first color filter 201 is located in the central area A0 of the color filter array 2, and the second color filter 202 is located on the side of the first color filter 201 close to the edge of the color filter array 2. The light-emitting element 10 includes a light-emitting area 30, and the color filter 20 includes a central color filter part 31 overlapping with the light-emitting area 30. The average thickness of the central color filter part 31 in the first color filter 201 is greater than the average thickness of the central color filter part 31 in the second color filter 202.

[0068] Specifically, the light-emitting element array 1 includes a plurality of light-emitting elements 10 arranged in an array, and the light-emitting elements 13 are used to emit visible light to achieve picture display.

[0069] Figure 5 is a schematic partial cross-sectional structural diagram of a display device provided by an embodiment of the present invention. As Figure 5 shown, taking the light-emitting element 10 as an organic light-emitting diode (OLED) as an example for illustration, the light-emitting element 10 includes an anode 51, a light-emitting layer 52, and a cathode 53. Electrons and holes are respectively injected into the light-emitting layer 52 from the cathode 53 and the anode 51, excitons are formed in the light-emitting layer 52, and the light-emitting molecules are excited, so that the light-emitting layer 52 emits visible light.

[0070] Optionally, as Figure 5 shown, the light-emitting element 10 is disposed on one side of the substrate 40, and the substrate 40 may be a silicon-based driving backplane. Among them, the substrate 40 includes a substrate 401, and a driving transistor T corresponding to the light-emitting element 10 is disposed on the substrate 401. The driving transistor T is connected to the anode 51, and the driving transistor T can provide a working signal corresponding to the light-emitting brightness to the light-emitting element 10 through the anode 51 to drive the light-emitting element 10 to emit light.

[0071] Optionally, as Figure 5 shown, the driving transistor T may include an active region T1, a gate T2, and a source-drain electrode layer T3 which are stacked. The active region T1 may be formed in the substrate 401, but is not limited thereto.

[0072] Optionally, as Figure 5 shown, a gate insulating layer 402 is disposed between the active region T1 and the gate T2, an interlayer insulating layer 403 is disposed between the gate T2 and the source-drain electrode layer T3, and a planarization layer 404 is disposed between the source-drain electrode layer T3 and the anode 51 to ensure insulation between adjacent metal layers. The embodiments of the present invention do not make specific limitations thereto.

[0073] It should be noted that the light-emitting element 10 is not limited to an organic light-emitting diode. In other embodiments, an inorganic light-emitting diode or the like may also be used. The embodiments of the present invention do not make specific limitations thereto.

[0074] Continuing to refer to Figure 4 and Figure 5 , the light-emitting element 10 includes a light-emitting region 30, and the light-emitting region 30 refers to a specific region or part of the light-emitting element 10 that can emit light.

[0075] Exemplarily, as Figure 5 shown, the display device further includes a pixel definition layer 41. The pixel definition layer 41 is located above the anode 51, and a first opening 410 is formed in the pixel definition layer 41. The first opening 410 exposes at least a part of the anode 51 below the pixel definition layer 41. The light-emitting layer 52 may be formed in the first opening 410 of the pixel definition layer 41 to achieve contact connection with the anode 51. Among them, the pixel definition layer 41 can be used to define the boundary of each light-emitting region 30. At this time, the boundary of the first opening 410 can be used as the boundary of the light-emitting region 30. The pixel definition layer 41 isolates the respective light-emitting regions 30 from each other, which can effectively prevent light crosstalk between adjacent light-emitting regions 30 and is beneficial to improving the display quality.

[0076] Furthermore, as Figure 3 and Figure 4As shown, a color filter array 2 is provided on the light-emitting side of the light-emitting element array 1. The color filter array 2 includes a plurality of color filters 20 corresponding one-to-one to the plurality of light-emitting elements 10. The color filters 20 are used to filter light that is not the same color as their own, serving as a light filtering function. The light emitted by each light-emitting element 10 passes through the corresponding color filter 20 and exits, which can improve the color purity of the emitted light and is beneficial to improving the display effect of the display device.

[0077] Optionally, as Figure 3 and Figure 4 shown, the color filter 20 covers the light-emitting region 30. At this time, the coverage range of the color filter 20 is greater than or equal to the light-emitting region 30 in terms of physical size, or rather, the area or projection range of the color filter 20 is greater than or equal to the light-emitting region 30. In this way, it can be ensured that the light emitted from the light-emitting region 30 can be effectively filtered by the color filter 20, thereby reducing unnecessary light leakage.

[0078] Among them, as Figure 3 and Figure 4 shown, the part of the color filter 20 that overlaps with the light-emitting region 30 is the central color filter section 31. It can be understood that the area of the central color filter section 31 is the same as the area of the corresponding light-emitting region 30. Most of the light emitted by the light-emitting region 30 will exit through the central color filter section 31. Therefore, the characteristics (such as material, thickness, light transmittance, light filtering ability, etc.) of the central color filter section 31 have a decisive impact on the quality of the finally emitted light.

[0079] Continuing to refer to Figure 3 and Figure 4 , the central area A0 of the color filter array 2 is located in the geometric center part of the color filter array 2. In the color filter array 2, the color filter 20 located in its central area A0 is the first color filter 201, and the color filter 20 located on the side of the first color filter 201 closer to the edge of the color filter array 2 is the second color filter 202.

[0080] It can be understood that the image heights corresponding to the color filters 20 at different positions in the color filter array 2 are different. Among them, the image height near the central area of the color filter array 2 is smaller than the image height near the edge area of the color filter array 2. Therefore, the image height corresponding to the first color filter 201 is smaller than the image height corresponding to the second color filter 202.

[0081] As mentioned above, since the central angle of the light-receiving cone angle corresponding to the position with a higher image height is larger, the light utilization rate at the position with a higher image height is lower than that at the position with a smaller image height. As a result, the display brightness in the middle area of the display device is significantly greater than the display brightness in the edge area.

[0082] In this embodiment, a differential design is performed on the central color resist section 31 of the first color resist 201 and the central color resist section 31 of the second color resist 202, such that the average thickness of the central color resist section 31 in the first color resist 201 is greater than the average thickness of the central color resist section 31 in the second color resist 202.

[0083] Wherein, the average thickness of the central color resist section 31 can be understood as the average value of the thicknesses of the central color resist section 31 measured at different positions of the central color resist section 31, and the value of the average thickness of the central color resist section 31 can be obtained by calculating the ratio of the volume of the central color resist section 31 to its positive projection area in the thickness direction of the display device.

[0084] It can be understood that the greater the thickness of the central color resist section 31, the stronger its light absorption ability, resulting in a lower light transmittance.

[0085] In this embodiment, by setting the central color resist section 31 of the first color resist 201 located in the central region A0 of the color resist array 2 to have a larger average thickness, the central color resist section 31 of the first color resist 201 can have a smaller light transmittance, thereby reducing the display brightness of the central region A0 (the position with a lower image height) to a certain extent; by setting the central color resist section 31 of the second color resist 202 near the edge of the color resist array 2 to have a smaller average thickness, the central color resist section 31 of the second color resist 202 can have a larger light transmittance, thereby increasing the display brightness of the region other than the central region A0 (the position with a higher image height) to a certain extent, thereby compensating for the display brightness difference caused by the difference in light collection cone angles, reducing the brightness difference at different image height positions, and improving the overall brightness uniformity of the display device.

[0086] In summary, the display device provided by the embodiment of the present invention, through a differential design of the central color resist section of the first color resist located in the central region of the color resist array and the central color resist section of the second color resist near the edge of the color resist array, makes the average thickness of the central color resist section in the first color resist greater than the average thickness of the central color resist section in the second color resist, so that the light transmittance of the central color resist section in the first color resist is less than the light transmittance of the central color resist section in the second color resist, thereby reducing the display brightness of the central region (the position with a lower image height) and increasing the display brightness of the region other than the central region (the position with a higher image height), compensating for the display brightness difference caused by the difference in light collection cone angles, reducing the brightness difference at different image height positions, and improving the overall brightness uniformity of the display device.

[0087] Optionally, along the direction from the first color resist 201 to the second color resist 202, the average thickness of the central color resist section 31 gradually decreases.

[0088] Wherein, as Figure 1 and Figure 2As shown, along the direction from the center of the display device to the edge of the display device, that is, along the direction from the first color resistor 201 to the second color resistor 202, the image height gradually increases. And as the image height gradually increases, the CRA will gradually increase, resulting in a gradual decrease in the light utilization rate, thereby causing the display brightness of the display device to gradually decrease from the middle area to the edge area.

[0089] Therefore, in this embodiment, in the direction from the first color resistor 201 to the second color resistor 202, the average thickness of the central color resistor part 31 of the plurality of color resistors 20 shows a gradually decreasing trend. That is, the closer the distance between the color resistor 20 and the geometric center of the color resistor array 2, the greater the average thickness of the central color resistor part 31 of the color resistor 20; the farther the distance between the color resistor 20 and the geometric center of the color resistor array 2, the smaller the average thickness of the central color resistor part 31 of the color resistor 20. In this way, in the direction from the first color resistor 201 to the second color resistor 202, the light transmittance of the central color resistor part 31 of the plurality of color resistors 20 shows a gradually increasing trend, so as to perform targeted compensation for the display brightness difference caused by the difference in the light collection cone angle through the gradient design, further reducing the brightness difference at different image height positions and improving the overall brightness uniformity of the display device.

[0090] Figure 6 It is a schematic structural diagram of another display device provided by an embodiment of the present invention. Figure 7 is Figure 6 a schematic cross-sectional structure diagram along the B-B' direction, as Figure 6 and Figure 7 shown. Optionally, the central color resistor part 31 includes a first central color resistor part 311 and / or a second central color resistor part 312, and the thickness of the first central color resistor part 311 is greater than the thickness of the second central color resistor part 312. The ratio of the area of the first central color resistor part 311 in the first color resistor 201 to the area of the light-emitting region 30 of the corresponding light-emitting element 10 is greater than the ratio of the area of the first central color resistor part 311 in the second color resistor 202 to the area of the light-emitting region 30 of the corresponding light-emitting element 10. The ratio of the area of the second central color resistor part 312 in the first color resistor 201 to the area of the light-emitting region 30 of the corresponding light-emitting element 10 is less than the ratio of the area of the second central color resistor part 312 in the second color resistor 202 to the area of the light-emitting region 30 of the corresponding light-emitting element 10.

[0091] As Figure 6 and Figure 7 shown, the central color resistor part 31 may include a first central color resistor part 311, and the first central color resistor part 311 has a larger thickness, making it have a smaller light transmittance.

[0092] Optionally, the thickness of the first central color resistance part 311 is consistent at each of its positions, that is, the first central color resistance part 311 has a uniform thickness at each of its positions, which can simplify the manufacturing process and is beneficial to ensuring the consistency of optical performance.

[0093] As Figure 6 and Figure 7 shown, the central color resistance part 31 may include a second central color resistance part 312, and the second central color resistance part 312 has a smaller thickness, so that it has a larger light transmittance.

[0094] Optionally, the thickness of the second central color resistance part 312 is consistent at each of its positions, that is, the second central color resistance part 312 has a uniform thickness at each of its positions, which can simplify the manufacturing process and is beneficial to ensuring the consistency of optical performance.

[0095] It should be noted that the specific thickness values of the first central color resistance part 311 and the second central color resistance part 312 can be set according to the light transmittance requirements and the materials of the first central color resistance part 311 and the second central color resistance part 312, and the embodiments of the present invention do not make specific limitations on this.

[0096] Furthermore, as Figure 6 and Figure 7 shown, the light-emitting element 10 corresponding to the first color resistance 201 is the first light-emitting element 101, and the light-emitting element 10 corresponding to the second color resistance 202 is the second light-emitting element 102. It can be understood that the first light-emitting element 101 is located in the central area of the light-emitting element array 1, and the second light-emitting element 102 is located on one side of the first light-emitting element 101 close to the edge of the light-emitting element array 1, wherein the image height of the first light-emitting element 101 is smaller than the image height of the second light-emitting element 102.

[0097] Optionally, the central area of the light-emitting element array 1 and the central area A0 of the color resistance array 2 are the same area, and the area where the second color resistance 202 is located and the area where the second light-emitting element 102 is located are the same area.

[0098] In this embodiment, as Figure 6 and Figure 7As shown, the area of the first central color filter section 311 in the first color filter 201 is S11, and the area of the light-emitting region 30 of the first light-emitting element 101 is S31. Then, the ratio between the area of the first central color filter section 311 in the first color filter 201 and the area of the light-emitting region 30 of the first light-emitting element 101 is S11 / S31; the area of the first central color filter section 311 in the second color filter 202 is S12, and the area of the light-emitting region 30 of the second light-emitting element 102 is S32. Then, the ratio between the area of the first central color filter section 311 in the second color filter 202 and the area of the light-emitting region 30 of the second light-emitting element 102 is S12 / S32. It can be understood that since the central color filter section 31 is the part of the color filter 20 that overlaps with the light-emitting region 30, the area of the central color filter section 31 is equal to the area of the light-emitting region 30 of the corresponding light-emitting element 10. Therefore, the ratio S11 / S31 between the area of the first central color filter section 311 in the first color filter 201 and the area of the light-emitting region 30 of the first light-emitting element 101 can be understood as the area proportion of the first central color filter section 311 in the central color filter section 31 of the first color filter 201; the ratio S12 / S32 between the area of the first central color filter section 311 in the second color filter 202 and the area of the light-emitting region 30 of the second light-emitting element 102 can be understood as the area proportion of the first central color filter section 311 in the central color filter section 31 of the second color filter 202.

[0099] In this embodiment, it is set that S11 / S31 > S12 / S32, such that the first central color filter section 311 in the central color filter section 31 of the first color filter 201 has a larger area proportion, and the first central color filter section 311 in the central color filter section 31 of the second color filter 202 has a smaller area proportion. Since the first central color filter section 311 has a larger thickness and a lower light transmittance, the overall light transmittance of the central color filter section 31 of the first color filter 201 can be made lower than that of the central color filter section 31 of the second color filter 202, thereby reducing the display brightness of the central region A0 (the position with a lower image height), increasing the display brightness of the region other than the central region A0 (the position with a higher image height), compensating for the display brightness difference caused by the difference in light-receiving cone angles, reducing the brightness difference at different image height positions, and improving the overall brightness uniformity of the display device.

[0100] Similarly, as Figure 6 and Figure 7As shown, the area of the second central color resistance section 312 in the first color resistance 201 is S21, and the area of the light-emitting region 30 of the first light-emitting element 101 is S31. Then, the ratio between the area of the second central color resistance section 312 in the first color resistance 201 and the area of the light-emitting region 30 of the first light-emitting element 101 (which can be understood as the area ratio of the second central color resistance section 312 in the central color resistance section 31 of the first color resistance 201) is S21 / S31; the area of the second central color resistance section 312 in the second color resistance 202 is S22, and the area of the light-emitting region 30 of the second light-emitting element 102 is S32. Then, the ratio between the area of the second central color resistance section 312 in the second color resistance 202 and the area of the light-emitting region 30 of the second light-emitting element 102 is S22 / S32 (which can be understood as the area ratio of the second central color resistance section 312 in the central color resistance section 31 of the second color resistance 202).

[0101] Among them, it is set that S21 / S31 < S22 / S32, so that the second central color resistance section 312 in the first color resistance 201 has a smaller area ratio, and the second central color resistance section 312 in the second color resistance 202 has a larger area ratio. Since the thickness of the second central color resistance section 312 is smaller and the light transmittance is higher, the overall light transmittance of the central color resistance section 31 of the first color resistance 201 can be made lower than that of the central color resistance section 31 of the second color resistance 202, thereby reducing the display brightness of the central region A0 (the position with a lower image height), increasing the display brightness of the region other than the central region A0 (the position with a higher image height), compensating for the display brightness difference caused by the difference in the light-receiving cone angle, reducing the brightness difference at different image height positions, and improving the overall brightness uniformity of the display device.

[0102] Among them, the area S31 of the light-emitting region 30 of the first light-emitting element 101 and the area S32 of the light-emitting region 30 of the second light-emitting element 102 can be the same or different. Figure 6 and Figure 7 Only the case where the area S31 of the light-emitting region 30 of the first light-emitting element 101 is equal to the area S32 of the light-emitting region 30 of the second light-emitting element 102 is taken as an example for illustration, but it is not limited thereto.

[0103] It should be noted that in this embodiment, it is set that the central color resistance section 31 includes a first central color resistance section 311 with a larger thickness and / or a second central color resistance section 312 with a smaller thickness. By adjusting the area ratio of the first central color resistance section 311 and the second central color resistance section 312 in the central color resistance section 31 of the color resistance 20 at different positions, the overall light transmittance of the central color resistance section 31 of the color resistance 20 at different positions is adjusted, thereby compensating for the display brightness difference caused by the difference in the light-receiving cone angle and improving the overall brightness uniformity of the display device. This solution has a simple manufacturing process and is easy to implement.

[0104] Optionally, as Figure 6 and Figure 7 shown, along the direction from the first color filter 201 to the second color filter 202, the ratio between the area of the first central color filter section 311 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 gradually decreases, and the ratio between the area of the second central color filter section 312 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 gradually increases.

[0105] As described above, along the direction from the center of the display device to the edge of the display device, that is, along the direction from the first color filter 201 to the second color filter 202, the image height gradually increases, and as the image height gradually increases, the CRA gradually increases, resulting in a gradual decrease in the light utilization rate, thereby causing the display brightness of the display device to gradually decrease from the middle region to the edge region.

[0106] Therefore, in this embodiment, along the direction from the first color filter 201 to the second color filter 202, the ratio between the area of the first central color filter section 311 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 shows a gradually decreasing trend, that is, the closer the distance between the color filter 20 and the geometric center of the color filter array 2, the larger the proportion of the first central color filter section 311 covering its corresponding light-emitting region 30; the farther the distance between the color filter 20 and the geometric center of the color filter array 2, the smaller the proportion of the first central color filter section 311 covering its corresponding light-emitting region 30. Since the first central color filter section 311 has a larger thickness and a lower light transmittance, the light transmittance of the central color filter sections 31 of multiple color filters 2 can show a gradually increasing trend along the direction from the first color filter 201 to the second color filter 202.

[0107] At the same time, along the direction from the first color filter 201 to the second color filter 202, the ratio between the area of the second central color filter section 312 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 shows a gradually increasing trend, that is, the closer the distance between the color filter 20 and the geometric center of the color filter array 2, the smaller the proportion of the second central color filter section 312 covering its corresponding light-emitting region 30; the farther the distance between the color filter 20 and the geometric center of the color filter array 2, the larger the proportion of the second central color filter section 312 covering its corresponding light-emitting region 30. Since the second central color filter section 312 has a smaller thickness and a higher light transmittance, the light transmittance of the central color filter sections 31 of multiple color filters 2 can show a gradually increasing trend along the direction from the first color filter 201 to the second color filter 202.

[0108] In this way, through the gradient design, in the direction from the first color filter 201 to the second color filter 202, the light transmittance of the central color filter part 31 of the multiple color filters 20 shows a gradually increasing trend, so as to specifically compensate for the display brightness difference caused by the difference in the light receiving cone angle, further narrow the brightness difference at different image height positions, and improve the overall brightness uniformity of the display device.

[0109] Figure 8 The structural schematic diagram of a first color filter provided by an embodiment of the present invention. Figure 9 The cross-sectional structural schematic diagram of a first color filter provided by an embodiment of the present invention. Figure 10 The structural schematic diagram of an edge color filter provided by an embodiment of the present invention. Figure 11 The cross-sectional structural schematic diagram of an edge color filter provided by an embodiment of the present invention. Optionally, as Figures 6 - 11 shown, the second color filter 202 includes a transition color filter 2021 and an edge color filter 2022. The edge color filter 2022 is located in the edge area A2 of the color filter array 2, and the transition color filter 2021 is located between the first color filter 201 and the edge color filter 2022. The ratio between the area of the first central color filter part 311 in the first color filter 201 and the area of the light emitting region 30 of the corresponding light emitting element 10 is equal to 1. The ratio between the area of the second central color filter part 312 in the edge color filter 2022 and the area of the light emitting region 30 of the corresponding light emitting element 10 is equal to 1. The ratio between the area of the first central color filter part 311 in the transition color filter 2021 and the area of the light emitting region 30 of the corresponding light emitting element 10 is greater than 0 and less than 1; the ratio between the area of the second central color filter part 312 in the transition color filter 2021 and the area of the light emitting region 30 of the corresponding light emitting element 10 is greater than 0 and less than 1.

[0110] Specifically, as Figures 6 - 11 shown, the color filter array 2 may further include an edge area A2 and a transition area A1. The edge area A2 is located in the edge part of the color filter array 2, and the transition area A1 is located between the central area A0 and the edge area A2. Among them, the transition area A1 surrounds the central area A0, and the edge area A2 surrounds the transition area A1. In the color filter array 2, the color filter 20 located in the transition area A1 is the transition color filter 2021, and the color filter 20 located in the edge area A2 is the edge color filter 2022.

[0111] In this embodiment, the ratio between the area of the first central color filter section 311 in the first color filter 201 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 is equal to 1. That is, the area of the first central color filter section 311 in the first color filter 201 accounts for 100% of the area of its central color filter section 31. At this time, the central color filter section 31 is entirely composed of the first central color filter section 311. The first central color filter section 311 of the first color filter 201 can completely cover the corresponding light-emitting region 30. Since the thickness of the first central color filter section 311 is relatively large and the light transmittance is relatively low, the overall light transmittance of the central color filter section 31 of the first color filter 201 located in the central region A0 can be minimized.

[0112] The ratio between the area of the second central color filter section 312 in the edge color filter 2022 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 is equal to 1. That is, the area of the second central color filter section 312 in the edge color filter 2022 accounts for 100% of the area of its central color filter section 31. At this time, the central color filter section 31 is entirely composed of the second central color filter section 312. The second central color filter section 312 of the edge color filter 2022 can completely cover the corresponding light-emitting region 30. Since the thickness of the second central color filter section 312 is relatively small and the light transmittance is relatively high, the overall light transmittance of the central color filter section 31 of the edge color filter 2022 located in the edge region A2 can be maximized, thereby maximizing the brightness of the edge region A2 and compensating for the brightness loss caused by the increase in the light-receiving cone angle.

[0113] The ratio between the area of the first central color filter section 311 in the transitional color filter 2021 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 is between 0 and 1, and the ratio between the area of the second central color filter section 312 and the area of the light-emitting region 30 of the corresponding light-emitting element 10 is between 0 and 1. That is, the areas of the first central color filter section 311 and the second central color filter section 312 in the transitional color filter 2021 respectively account for between 1% and 100% of the area of its central color filter section 31. At this time, the central color filter section 31 is composed of the first central color filter section 311 and the second central color filter section 312, and the overall light transmittance of the central color filter section 31 of the transitional color filter 2021 can be between the central color filter section 31 of the first color filter 201 and the central color filter section 31 of the edge color filter 2022, realizing the transition of brightness from the central region A0 to the edge region A2.

[0114] Among them, by adjusting the area ratio of the first central color filter section 311 and the second central color filter section 312, the brightness distribution from the central region A0 to the edge region A2 can be optimized, realizing a smooth transition of brightness from the central region A0 to the edge region A2, thereby avoiding the problem of visual non-uniformity caused by sudden brightness changes.

[0115] It should be noted that, in this embodiment, in the first color filter 201, the central color filter part 31 is entirely composed of the first central color filter part 311; in the edge color filter 2022, the central color filter part 31 is entirely composed of the second central color filter part 312, which can reduce the design complexity and make it easier to control the patterning accuracy during the manufacturing process. At the same time, process variables can also be reduced, and it is not necessary to process two types of central color filter parts (such as the first central color filter part 311 and the second central color filter part 312) simultaneously in the central region A0 and the edge region A2, reducing the manufacturing difficulty and cost.

[0116] Optionally, as Figure 6 and Figure 7 shown, the second color filter 202 includes a transition color filter 2021 and an edge color filter 2022. The edge color filter 2022 is located in the edge region A2 of the color filter array 2, and the transition color filter 2021 is located between the first color filter 201 and the edge color filter 2022. The plurality of light-emitting elements 10 include a first light-emitting element 101 corresponding to the first color filter 201 and an edge light-emitting element 1022 corresponding to the edge color filter 2022. The ratio of the brightness of the edge light-emitting element 1022 at its main light ray angle to the brightness of the first light-emitting element 101 at its main light ray angle is u. The light transmittance of the first central color filter part 311 is T1, and the light transmittance of the second central color filter part 312 is T2, and T1 = u × T2.

[0117] Among them, the specific settings of the transition color filter 2021 and the edge color filter 2022 can refer to the above embodiment and will not be elaborated here.

[0118] In this embodiment, the light-emitting element 10 corresponding to the first color filter 201 is the first light-emitting element 101. It can be understood that the first light-emitting element 101 is located in the central region A0, and the light emitted by each first light-emitting element 101 exits through the first color filter 201 corresponding to it.

[0119] The light-emitting element 10 corresponding to the edge color filter 2022 is the edge light-emitting element 1022. It can be understood that the edge light-emitting element 1022 is located in the edge region A2, and the light emitted by each edge light-emitting element 1022 exits through the edge color filter 2022 corresponding to it.

[0120] Among them, the ratio of the brightness of the edge light-emitting element 102 at its main light ray angle to the brightness of the first light-emitting element 101 at its main light ray angle is u, and the value of u can reflect the difference in brightness between the edge region A2 and the central region A0. It can be understood that the brightness of the edge region A2 at its main light ray angle is usually lower than the brightness of the central region A0 at its main light ray angle. Therefore, u < 1.

[0121] Further, the light transmittance T1 of the first central color resistance section 311 and the light transmittance T2 of the second central color resistance section 312 are set to satisfy T1 = u×T2, so that the light transmittance T1 of the first central color resistance section 311 is u times that of the second central color resistance section 312. In this way, the light transmittance T1 of the first central color resistance section 311 is lower than that of the second central color resistance section 312, and the light transmittance difference between the first central color resistance section 311 and the second central color resistance section 312 is set based on the actual brightness difference between the edge light-emitting element 102 and the first light-emitting element 101 at their respective main light angles, achieving precise compensation for the display brightness difference between the central region A0 and the edge region A2 and improving the overall brightness uniformity of the display device.

[0122] It can be understood that, as Figures 6 - 11 shown, when the central color resistance section 31 in the first color resistance 201 is entirely composed of the first central color resistance section 311 and the central color resistance section 31 in the edge color resistance 2022 is entirely composed of the second central color resistance section 312, the light transmittance settings of the central color resistance section 31 in the first color resistance 201 and the edge color resistance 2022 can be fully matched with the actual brightness difference between the central region A0 and the edge region A2. In this way, the actual display brightness of the edge region A2 and the central region A0 can tend to be consistent, making the brightness distribution of the entire display panel more uniform.

[0123] Figure 12 FIG. is a schematic structural diagram of a transition color resistance provided by an embodiment of the present invention. Figure 13 FIG. is a schematic cross-sectional structural diagram of a transition color resistance provided by an embodiment of the present invention. Optionally, as Figures 6 - 13 shown, the plurality of light-emitting elements 10 further includes a transition light-emitting element 1021 corresponding to the transition color resistance 2021. The ratio of the brightness of the transition light-emitting element 1021 at its main light angle to the brightness of the first light-emitting element 101 at its main light angle is a. The area of the first central color resistance section 311 in the corresponding transition color resistance 2021 is S1, and the area of the second central color resistance section 312 is S2.

[0124]

[0125] Among them, the light-emitting element 10 corresponding to the transition color resistance 2021 is the transition light-emitting element 1021. It can be understood that the transition light-emitting element 1021 is located in the transition region A1, and the light emitted by each transition light-emitting element 1021 exits through the corresponding transition light-emitting element 1021.

[0126] In this embodiment, the ratio between the brightness of the transition light-emitting element 1021 and the first light-emitting element 101 at their respective main light angles is a. Among them, the magnitude of a can reflect the difference in brightness between the transition region A1 and the central region A0. It can be understood that the brightness of the transition region A1 at its main light angle is generally lower than that of the central region A0 at its main light angle and higher than that of the edge region A2 at its main light angle. Therefore, 0 < a < 1.

[0127] Furthermore, the overall light transmittance of the central color resistor section 31 of the transition color resistor 2021 can be determined by the area-weighted average of the first central color resistor section 311 and the second central color resistor section 312 in the central color resistor section 31. At this time, the light transmittance T3 of the central color resistor section 31 of the transition color resistor 2021 can satisfy

[0128] Among them, for the transition color resistor 2021 at different positions, by adjusting the area ratio of the first central color resistor section 311 and the second central color resistor section 312 in the central color resistor section 31, the light transmittance T3 of the central color resistor section 31 is made to satisfy T3 × a = u, that is, It can make the light transmittance of the central color resistor section 31 of the transition color resistor 2021 match the actual brightness difference between the transition region A1 and the central region A0, making the display brightness of the transition region A1 and the central region A0 tend to be consistent, and ensuring that the brightness distribution of the entire display panel is more uniform.

[0129] Optionally, as Figure 6 shown, the first central color resistor section 311 is a rotationally symmetric figure, and the second central color resistor section 312 is a rotationally symmetric figure.

[0130] Specifically, both the first central color resistor section 311 and the second central color resistor section 312 are designed as rotationally symmetric figures. Rotational symmetry means that these figures remain in the same shape after rotating a certain angle around the center point (such as a circle, a square, or other symmetric shapes).

[0131] With such a setting, the central color resistor section 31 can exhibit the same optical properties in any direction, avoiding differences in light transmittance caused by asymmetric figures, helping to reduce color deviations in different directions, and ensuring color consistency and uniformity of the display device at different viewing angles.

[0132] It should be noted that Figure 6 only the first central color resistor section 311 and the second central color resistor section 312 are taken as rectangles for illustration, but it is not limited thereto. In other embodiments, the outer contours of the first central color resistor section 311 and the second central color resistor section 312 can also be circular, hexagonal, etc. The embodiments of the present invention do not make specific limitations in this regard.

[0133] Optionally, the second central color filter section 312 is disposed around the first central color filter section 311 (as Figure 6 shown), or the first central color filter section 311 is disposed around the second central color filter section 312. This layout can make the light transmittance more uniform in different directions, ensuring color consistency and uniformity of the display device at different viewing angles.

[0134] In other embodiments, the second central color filter section 312 and the first central color filter section 311 may also adopt other layout manners, and the embodiments of the present invention do not make specific limitations thereto.

[0135] Optionally, as Figures 6 - 13 shown, the color filter 20 further includes a peripheral color filter section 32 disposed around the central color filter section 31. The thickness of the peripheral color filter section 32 is the same as that of the first central color filter section 311; or the thickness of the peripheral color filter section 32 is the same as that of the second central color filter section 312.

[0136] Specifically, the area of the color filter 20 is larger than the area of the corresponding light-emitting region 30. The peripheral color filter section 32 can be understood as the peripheral part of the color filter 20 that does not overlap with the light-emitting region 30. In this way, the large-angle light emitted from the light-emitting region 30 can also be emitted through the color filter 20, thereby improving the overall light utilization rate and display effect.

[0137] In this embodiment, the peripheral color filter section 32 has the same thickness as the first central color filter section 311; or the peripheral color filter section 32 has the same thickness as the second central color filter section 312 (as Figure 7 shown). In this way, the thickness parameters that need to be adjusted can be reduced, the production process can be simplified, and the production efficiency can be improved.

[0138] Continuing to refer to Figure 3 and Figure 4 , optionally, in the central color filter section 31, the central color filter section 31 has the same thickness at different positions thereof.

[0139] Specifically, as Figure 3 and Figure 4 shown, within a single central color filter section 31, the thickness at each position is consistent, that is, the central color filter section 31 has a uniform thickness at each internal position. In this way, the manufacturing process can be simplified and it is beneficial to ensure the consistency of optical performance.

[0140] In this embodiment, the thickness of the central color resist portion 31 in the first color resist 201 is greater than that of the central color resist portion 31 in the second color resist 202. By setting the central color resist portion 31 of the first color resist 201 located in the central region A0 of the color resist array 2 to have a larger thickness, the central color resist portion 31 of the first color resist 201 can have a smaller light transmittance, thereby reducing the display brightness of the central region A0 (the position with a lower image height) to a certain extent; by setting the central color resist portion 31 of the second color resist 202 near the edge of the color resist array 2 to have a smaller thickness, the central color resist portion 31 of the second color resist 202 can have a larger light transmittance, thereby increasing the display brightness of the region other than the central region A0 (the position with a higher image height) to a certain extent, compensating for the display brightness difference caused by the difference in light collection cone angles, reducing the brightness difference at different image height positions, and improving the overall brightness uniformity of the display device.

[0141] Optionally, as Figure 3 and Figure 4 shown, along the direction from the first color resist 201 to the second color resist 202, the thickness of the central color resist portion 31 gradually decreases, that is, the closer the distance between the color resist 20 and the geometric center of the color resist array 2, the greater the thickness of the central color resist portion 31 of the color resist 20; the farther the distance between the color resist 20 and the geometric center of the color resist array 2, the smaller the thickness of the central color resist portion 31 of the color resist 20. In this way, in the direction from the first color resist 201 to the second color resist 202, the light transmittance of the central color resist portions 31 of multiple color resists 20 shows a gradually increasing trend, so that through the gradient design, the display brightness difference caused by the difference in light collection cone angles is compensated specifically, further reducing the brightness difference at different image height positions and improving the overall brightness uniformity of the display device.

[0142] Figure 14 It is a schematic cross-sectional structure diagram of another first color resist provided by an embodiment of the present invention. Figure 15 It is a schematic cross-sectional structure diagram of another transition color resist provided by an embodiment of the present invention. Figure 16 It is a schematic cross-sectional structure diagram of another edge color resist provided by an embodiment of the present invention. Optionally, as Figure 3 、 Figure 4 and Figures 14 - 16As shown, the color filter array 2 may further include an edge region A2 and a transition region A1. The edge region A2 is located at the edge portion of the color filter array 2, and the transition region A1 is located between the central region A0 and the edge region A2. The second color filter 202 includes a transition color filter 2021 and an edge color filter 2022. The transition color filter 2021 is located in the color filter 20 of the transition region A1, and the edge color filter 2022 is located in the color filter 20 of the edge region A2. The thickness of the central color filter portion 31 in the first color filter 201 is greater than the thickness of the central color filter portion 31 in the transition color filter 2021, and the thickness of the central color filter portion 31 in the transition color filter 2021 is greater than the thickness of the central color filter portion 31 in the edge color filter 2022. In this way, the overall light transmittance of the central color filter portion 31 of the first color filter 201 located in the central region A0 can be minimized, the overall light transmittance of the central color filter portion 31 of the edge color filter 2022 located in the edge region A2 can be maximized, and the overall light transmittance of the central color filter portion 31 of the transition color filter 2021 is between the central color filter portion 31 of the first color filter 201 and the central color filter portion 31 of the edge color filter 2022. While compensating for the brightness loss caused by the increase in the light receiving cone angle and improving the overall brightness uniformity of the display device, the brightness distribution between the central region A0 and the edge region A2 is optimized, and a smooth transition of brightness from the central region A0 to the edge region A2 is achieved, thereby avoiding the problem of visual non-uniformity caused by sudden brightness changes.

[0143] Optionally, for the transition color filters 2021 at different positions, along the direction from the first color filter 201 to the second color filter 202, the average thickness of the central color filter portion 31 gradually decreases. In the direction from the first color filter 201 to the second color filter 202, the light transmittance of the central color filter portions 31 of the plurality of transition color filters 2021 shows a gradually increasing trend, so that through the gradient design, the display brightness difference caused by the difference in the light receiving cone angle is compensated specifically, and the brightness difference at different image height positions is further reduced, improving the overall brightness uniformity of the display device.

[0144] Optionally, as Figure 3 、 Figure 4 and Figures 14 - 16 shown, the color filter 20 further includes a peripheral color filter portion 32 disposed around the central color filter portion 31. In the color filter 20, the thickness of the peripheral color filter portion 32 is equal to the thickness of the central color filter portion 31.

[0145] Among them, the structure of the peripheral color filter portion 32 may refer to the above embodiments and will not be elaborated here.

[0146] In this embodiment, in the same color filter 20, the peripheral color filter portion 32 and the central color filter portion 31 have the same thickness, which can reduce the thickness parameters to be adjusted, simplify the production process, and improve the production efficiency.

[0147] Optionally, as shown in Figure 3 , Figure 4 , Figure 6 and Figure 7 shown, the light-emitting region 30 includes a light-emitting center O1, the color filter 20 includes a color filter center O2, the light-emitting center O1 of the light-emitting region 30 coincides with the color filter center O2 of the corresponding color filter 20, and the overlapping portion of the color filter 20 and the light-emitting region 30 in the thickness direction of the display device is the central color filter portion 31.

[0148] Among them, the light-emitting center O1 can be understood as the geometric center of the light-emitting region 30, and the color filter center O2 can be understood as the geometric center of the color filter 20.

[0149] In this embodiment, the light-emitting center O1 of the light-emitting region 30 coincides with the color filter center O2 of the corresponding color filter 20, that is, the color filter center O2 of the color filter 20 does not shift relative to the light-emitting element 10. Such a setting can simplify the design complexity, thereby simplifying the design process and improving efficiency, and is easy to implement.

[0150] It should be noted that the coincidence of the light-emitting center O1 of the light-emitting region 30 and the color filter center O2 of the corresponding color filter 20 means that the vertical projection of the center of the light-emitting region 30 on the plane where the display device is located coincides with the vertical projection of the center of the corresponding color filter 20 on the plane where the display device is located.

[0151] Further, when the color filter center O2 of the color filter 20 does not shift relative to the light-emitting element 10, the range of the central color filter portion 31 is determined by the overlapping portion of the color filter 20 and the light-emitting region 30 in the thickness direction of the display device, that is, the vertical projection of the central color filter portion 31 on the plane where the display device is located coincides with the vertical projection of the corresponding light-emitting region 30 on the plane where the display device is located. This is beneficial to enable the central color filter portion 31 to cover the core light propagation range of the light-emitting region 30, and the main light rays emitted by the light-emitting region 30 can directly exit through the central color filter portion 31, thereby reducing the light loss caused by the mismatch of the position of the central color filter portion 31, improving the light utilization rate, and further by adjusting the thickness characteristics of the central color filter portion 31, it helps to more accurately compensate for the brightness differences at different positions and improve the overall brightness uniformity.

[0152] Figure 17 It is a schematic structural diagram of another display device provided by an embodiment of the present invention. Figure 18 is Figure 17 a schematic cross-sectional structure diagram along the C-C' direction, as shown in Figure 17 and Figure 18As shown, optionally, the plurality of light-emitting elements 10 include a first light-emitting element 101 corresponding to the first color filter 201 and a second light-emitting element 102 corresponding to the second color filter 202. The light-emitting region 30 of the first light-emitting element 101 includes a first light-emitting center O11, the first color filter 201 includes a first color filter center O21, and the first light-emitting center O11 and the first color filter center O21 coincide. The light-emitting region 30 of the second light-emitting element 102 includes a second light-emitting center O12, the second color filter 202 includes a second color filter center O22, and along the direction from the first color filter 201 to the second color filter 202, the second color filter center O22 of the second color filter 202 and the second light-emitting center O12 of the corresponding second light-emitting element 102 are offset from each other, and the second color filter center O22 is located on the side of the second light-emitting center O12 away from the first light-emitting center O11. The portion of the color filter 20 that overlaps the light-emitting region 30 at the principal ray angle of the corresponding light-emitting element 10 is the central color filter section 31.

[0153] Among them, the specific structures and positions of the first light-emitting element 101 and the second light-emitting element 102 can refer to the above embodiments and will not be elaborated here.

[0154] In this embodiment, the first light-emitting center O11 can be understood as the geometric center of the light-emitting region 30 of the first light-emitting element 101, and the first color filter center O21 can be understood as the geometric center of the first color filter 201. The first light-emitting center O11 of the first light-emitting element 101 coincides with the first color filter center O21 of the corresponding first color filter 201, that is, in the central region A0, it means that the vertical projection of the center of the first light-emitting element 101 on the plane of the display device coincides with the vertical projection of the center of the corresponding first color filter 201 on the plane of the display device. At this time, the first color filter center O21 of the first color filter 201 is not offset relative to the first light-emitting element 101.

[0155] Further, the second light-emitting center O12 can be understood as the geometric center of the light-emitting region 30 of the second light-emitting element 102, and the second color-resist center O22 can be understood as the geometric center of the second color-resist 202. Along the direction from the first color-resist 201 to the second color-resist 202, the second color-resist center O22 of the second color-resist 202 and the second light-emitting center O12 of the corresponding second light-emitting element 102 are offset from each other, and the second color-resist center O22 is located on the side of the second light-emitting center O12 away from the first light-emitting center O11. With such a setting, the second color-resist center O22 is offset toward the side away from the central region A0, so that the main optical axis of the light beam emitted through the second color-resist 202 is inclined toward the large viewing angle direction, that is, the emission angle of the main light ray of the second light-emitting element 102 is inclined toward the large viewing angle direction, making the emission angle of the main light ray of the second light-emitting element 102 match the light-receiving characteristics of the optical engine, ensuring that the optical engine can receive more large-viewing-angle light rays, thereby improving the relative brightness of the display device at large viewing angles, reducing the color deviation value at large viewing angles, and improving the viewing angle color shift of the screen body.

[0156] Optionally, as Figure 18 shown, the first light-emitting element 101 corresponds to a first main light ray angle CRA1, and the second light-emitting element 102 corresponds to a second main light ray angle CRA2. Among them, the first main light ray angle CRA1 can be understood as the central main optical axis of the display device, and the direction of the first main light ray angle CRA1 is perpendicular to the plane where the display device is located. The second main light ray angle CRA2 can be understood as the edge main optical axis of the display panel. In this embodiment, matching the setting manners of the first main light ray angle CRA1 and the second main light ray angle CRA2 with the light-receiving characteristics of the optical engine can ensure that the optical engine can receive more light rays and ensure the display effect of the display device.

[0157] Specifically, the second main light ray angle CRA2 is inclined toward the edge side of the light-emitting element array 1. The included angles between the second main light ray angles CRA2 at different image heights and the first main light ray angle CRA1 are different, and as the image height gradually increases, the included angle between the second main light ray angle CRA2 and the first main light ray angle CRA1 gradually increases.

[0158] Therefore, in this embodiment, along the direction from the first color-resist 201 to the second color-resist 202, the offset amount between the second color-resist center O22 of the second color-resist 202 and the second light-emitting center O12 of the corresponding second light-emitting element 102 can be set to gradually increase, which can ensure that the position change of the second color-resist 202 is consistent with the light-receiving characteristics of the optical engine, ensuring that the light rays emitted by the second light-emitting elements 102 at different positions can be accurately filtered by the second color-resist 202, helping to meet the brightness requirements of users in the large-viewing-angle viewing state and improving the user experience.

[0159] Further, when the color resistance center O2 of the color resistance 20 is offset relative to the light-emitting element 10, the range of the central color resistance portion 31 is determined by the overlapping portion of the color resistance 20 and the light-emitting region 30 in the direction of the principal ray angle. That is, along the direction of the principal ray angle, the projection of the central color resistance portion 31 on the plane where the display device is located coincides with the projection of the corresponding light-emitting region 30 on the plane where the display device is located. This is beneficial for enabling the central color resistance portion 31 to cover the core light propagation range of the light-emitting region 30, and the principal rays emitted by the light-emitting region 30 can directly exit through the central color resistance portion 31, thereby reducing light loss caused by the mismatch of the position of the central color resistance portion 31, improving the light utilization rate, and further, by adjusting the thickness characteristics of the central color resistance portion 31, it helps to more precisely compensate for the brightness differences at different positions and improve the overall brightness uniformity.

[0160] Optionally, as Figures 3 - 18 shown, the areas of the multiple color resistances 20 are the same.

[0161] Specifically, each color resistance 20 is set to have the same area, that is, the coverage areas of all the color resistances 20 on the display device are consistent. By unifying the areas of the color resistances 20, optical deviation problems caused by differences in the areas of the color resistances can be reduced. At the same time, the parameters that need to be adjusted during the manufacturing process can also be reduced, the process complexity can be lowered, and the production efficiency can be improved.

[0162] Optionally, as Figures 3 - 18 shown, the areas of the light-emitting regions 30 of the multiple light-emitting elements 10 are the same, which can reduce optical deviation problems caused by differences in the areas of the light-emitting regions 30. At the same time, the parameters that need to be adjusted during the manufacturing process can also be reduced, the process complexity can be lowered, and the production efficiency can be improved.

[0163] It should be noted that the display device provided in the embodiments of the present invention can be a micro organic light-emitting diode (Micro-OLED) display device or a silicon-based micro organic light-emitting display device (Silicon-based Micro-OLED Display); it can be applied to electronic display devices such as virtual reality (VR), augmented reality (AR), or an electronic viewfinder (Electronic View Finder, EVF), and the embodiments of the present invention do not limit this.

[0164] Exemplarily, the organic light-emitting display device provided in the embodiments of the present invention is a silicon-based micro organic light-emitting display device.

[0165] Among them, the silicon-based micro-organic light-emitting display device (Silicon-based Micro-OLED Display) combines the silicon-based integrated circuit (CMOS) process and the organic light-emitting diode (OLED) technology to directly integrate the OLED pixel array onto a silicon wafer to form a micro-display.

[0166] The silicon-based micro-organic light-emitting display device has the characteristics of being small, thin, light, low power consumption, high brightness, fast response speed, and wide viewing angle, and is suitable for applications in near-eye display devices, such as virtual reality (VR), augmented reality (AR) head-mounted devices, head-up display (HUD) systems, micro-projectors, and other portable electronic products with strict requirements for volume, weight, and energy consumption.

[0167] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added, or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0168] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display device, characterized in that: It includes a light emitting element array and a color resist array located on the light emitting side of the light emitting element array; The light emitting element array includes a plurality of light emitting elements, the color resist array includes a plurality of color resists, and the plurality of color resists and the plurality of light emitting elements are arranged in a one-to-one correspondence; The plurality of color resists include a first color resist and a second color resist, wherein the first color resist is located in the central area of ​​the color resist array, and the second color resist is located on a side of the first color resist close to an edge of the color resist array; The light-emitting element includes a light-emitting area, and the color resist includes a central color resist portion overlapping the light-emitting area; An average thickness of the central color resist portion in the first color resist is greater than an average thickness of the central color resist portion in the second color resist.

2. The display device according to claim 1, characterized in that Along the direction from the first color resist to the second color resist, the average thickness of the central color resist portion gradually decreases.

3. The display device according to claim 1, characterized in that The central color resist section includes a first central color resist section and / or a second central color resist section, and the thickness of the first central color resist section is greater than the thickness of the second central color resist section; The ratio between the area of ​​the first central color resist portion in the first color resist and the area of ​​the light-emitting region of the light-emitting element corresponding thereto is greater than the ratio between the area of ​​the first central color resist portion in the second color resist and the area of ​​the light-emitting region of the light-emitting element corresponding thereto; The ratio between the area of ​​the second central color resist portion in the first color resist and the area of ​​the light-emitting region of the light-emitting element corresponding thereto is smaller than the ratio between the area of ​​the second central color resist portion in the second color resist and the area of ​​the light-emitting region of the light-emitting element corresponding thereto.

4. The display device according to claim 3, characterized in that: Along the direction from the first color resist to the second color resist, the ratio between the area of ​​the first central color resist portion and the area of ​​the light-emitting region of the corresponding light-emitting element gradually decreases, and the ratio between the area of ​​the second central color resist portion and the area of ​​the light-emitting region of the corresponding light-emitting element gradually increases.

5. The display device according to claim 3, characterized in that: The second color resist includes a transition color resist and an edge color resist, the edge color resist is located at an edge region of the color resist array, and the transition color resist is located between the first color resist and the edge color resist; The ratio between the area of ​​the first central color resist portion in the first color resist and the area of ​​the light emitting region of the light emitting element corresponding thereto is equal to 1; The ratio between the area of ​​the second central color resist portion in the edge color resist and the area of ​​the light emitting region of the light emitting element corresponding thereto is equal to 1; The ratio between the area of ​​the first central color resist portion in the transition color resist and the area of ​​the light-emitting region of the light-emitting element corresponding thereto is greater than 0 and less than 1; the ratio between the area of ​​the second central color resist portion in the transition color resist and the area of ​​the light-emitting region of the light-emitting element corresponding thereto is greater than 0 and less than 1.

6. The display device according to claim 3, characterized in that: The second color resist includes a transition color resist and an edge color resist, the edge color resist is located at an edge region of the color resist array, and the transition color resist is located between the first color resist and the edge color resist; The plurality of light-emitting elements include a first light-emitting element corresponding to the first color resistor and an edge light-emitting element corresponding to the edge color resistor, and a ratio between the brightness of the edge light-emitting element at its main light angle and the brightness of the first light-emitting element at its main light angle is u; The light transmittance of the first central color-resistance portion is T1, and the light transmittance of the second central color-resistance portion is T2, where T1=u×T2.

7. The display device according to claim 6, characterized in that: The plurality of light-emitting elements further include a transitional light-emitting element corresponding to the transitional color resistance; The ratio between the brightness of the transitional light-emitting element at its main light angle and the brightness of the first light-emitting element at its main light angle is a, and the area of ​​the first central color block portion in the corresponding transitional color block is S1, and the area of ​​the second central color block portion is S2; 8. The display device according to claim 3, characterized in that: The first central color-resistance division is in a rotationally symmetrical shape; The second central color-resistance portion is in a rotationally symmetrical shape.

9. The display device according to claim 3, characterized in that: The color resist also includes a peripheral color resist sub-section arranged around the central color resist sub-section; The thickness of the peripheral color-resistance section is the same as the thickness of the first central color-resistance section; or, the thickness of the peripheral color-resistance section is the same as the thickness of the second central color-resistance section.

10. The display device according to claim 1, characterized in that: In the central color-resist section, the central color-resist section has the same thickness at different positions thereof.

11. The display device according to claim 10, characterized in that: The color resist also includes a peripheral color resist sub-section arranged around the central color resist sub-section; In the color resist, the thickness of the peripheral color resist portion is equal to the thickness of the central color resist portion.

12. The display device according to claim 1, characterized in that: The light-emitting area includes a light-emitting center, and the color resistance includes a color resistance center; The luminous center of the luminous area coincides with the color resistance center of the color resistance corresponding thereto; The portion of the color resist overlapping the light-emitting area in the thickness direction of the display device is the central color resist portion.

13. The display device according to claim 1, characterized in that The plurality of light emitting elements include a first light emitting element corresponding to the first color resistor and a second light emitting element corresponding to the second color resistor; The light-emitting region of the first light-emitting element includes a first light-emitting center, the first color resistance includes a first color resistance center, and the first light-emitting center and the first color resistance center coincide with each other; The light-emitting area of ​​the second light-emitting element includes a second light-emitting center, and the second color resist includes a second color resist center; along the direction from the first color resist to the second color resist, the second color resist center of the second color resist and the second light-emitting center of the second light-emitting element corresponding thereto are offset from each other, and the second color resist center is located on the side of the second light-emitting center away from the first light-emitting center; The portion of the color resist that overlaps with the light-emitting area at the main light ray angle of the light-emitting element corresponding thereto is the central color resist portion.

14. The display device according to claim 1, characterized in that The areas of the plurality of color resists are the same.

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