A display device

Abstract

The utility model discloses a kind of display equipment, comprising: display panel, including the sub-pixel of array arrangement;Cover plate, located at the light exit side of display panel;Light-absorbing layer, between display panel and cover plate, light-absorbing layer includes multiple first openings corresponding to sub-pixel one by one, the orthographic projection of first opening on display panel covers the light emitting area of corresponding sub-pixel.Such, by setting light-absorbing layer between display panel and cover plate, eliminate the non-light emitting area between the light emitting area of sub-pixel and the light waveguide effect between cover plate, so as to emit when the light emitting area of sub-pixel, eliminate the light ray in non-light emitting area by light waveguide effect emission, further avoid the light leakage at non-light emitting area around light emitting area, avoid the generation of halo around sub-pixel, improve the luminous purity of display equipment, multiple first openings corresponding to sub-pixel one by one on light-absorbing layer then provide the passage for the emission of light emitting area light ray, realize the normal display of display equipment.

Description

Technical Field

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

[0002] In display devices, the cover plate located on the light-emitting surface of the display panel provides physical protection and an optical window, offering features such as scratch resistance, impact resistance, and high light transmittance. However, the cover plate cannot achieve complete light transmission and exhibits a certain degree of reflection. This reflected light creates a waveguide effect between the non-light-emitting areas between sub-pixels and the cover plate. This results in light escaping from the non-light-emitting areas at the edges of the sub-pixels when they emit light, forming a halo around the sub-pixels and reducing the luminous purity of the display device. Therefore, improving the luminous purity of display devices has become a pressing technical problem to be solved in this field. Utility Model Content

[0003] This utility model provides a display device to improve the luminous purity of the display device.

[0004] In a first aspect, embodiments of the present invention provide a display device, comprising:

[0005] The display panel includes sub-pixels arranged in an array;

[0006] A cover plate is located on the light-emitting side of the display panel;

[0007] A light-absorbing layer is located between the display panel and the cover plate. The light-absorbing layer includes a plurality of first openings that correspond one-to-one with the sub-pixels. The orthographic projection of the first opening on the display panel covers the light-emitting area of ​​the corresponding sub-pixel.

[0008] Secondly, this utility model embodiment provides a method for manufacturing a display device, including:

[0009] A display panel and a cover plate are fabricated separately; the display panel includes sub-pixels arranged in an array.

[0010] A light-absorbing layer is formed between the display panel and the cover plate; the cover plate is located on the light-emitting side of the display panel; the light-absorbing layer includes a plurality of first openings corresponding one-to-one with the sub-pixels, and the orthographic projection of the first openings on the display panel covers the corresponding sub-pixels.

[0011] The beneficial effects of this utility model are as follows:

[0012] This utility model provides a display device comprising: a display panel including sub-pixels arranged in an array; a cover plate located on the light-emitting side of the display panel; and a light-absorbing layer located between the display panel and the cover plate. The light-absorbing layer includes a plurality of first openings corresponding one-to-one with the sub-pixels, and the orthographic projection of the first openings on the display panel covers the light-emitting area of ​​the corresponding sub-pixel. Thus, by setting the light-absorbing layer between the display panel and the cover plate, the optical waveguide effect between the non-light-emitting areas of the sub-pixels and the cover plate is eliminated. This eliminates the light leakage in the non-light-emitting areas when the sub-pixels emit light, thereby preventing light leakage in the non-light-emitting areas surrounding the light-emitting areas and avoiding the generation of halos around the sub-pixels. This improves the light emission purity of the display device. The plurality of first openings on the light-absorbing layer corresponding one-to-one with the sub-pixels provide a path for the light emission from the light-emitting areas, enabling normal display of the device. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the first display device provided in the embodiments of this utility model;

[0014] Figure 2 This is a cross-sectional view of a display device without a light-absorbing layer provided in an embodiment of this utility model;

[0015] Figure 3 This is a top view of a display device at the light-absorbing layer provided in an embodiment of the present utility model;

[0016] Figure 4 This is a schematic diagram of the structure at the first opening of the light-absorbing layer provided in an embodiment of the present utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the first opening of another light-absorbing layer provided in an embodiment of the present invention;

[0018] Figure 6 This is a cross-sectional view of the second display device provided in this embodiment of the present utility model;

[0019] Figure 7 This is a schematic diagram of an orthographic projection of a light-absorbing layer and a light-shielding layer provided in an embodiment of this utility model;

[0020] Figure 8 This is a schematic diagram of an orthographic projection of another light-absorbing layer and a light-shielding layer provided in an embodiment of this utility model;

[0021] Figure 9 This is a cross-sectional view of the third display device provided in the embodiments of this utility model;

[0022] Figure 10 This is a schematic diagram illustrating the fabrication process of a light-absorbing layer provided in an embodiment of the present invention;

[0023] Figure 11 This is a schematic diagram illustrating the fabrication process of another light-absorbing layer provided in this embodiment of the present invention. Detailed Implementation

[0024] The specific embodiments of a display device provided by this utility model will now be described in detail with reference to the accompanying drawings. It should be noted that the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] This utility model embodiment provides a display device, such as... Figure 1 As shown, it includes:

[0026] Display panel 100 includes sub-pixels 110 arranged in an array;

[0027] Cover plate 200 is located on the light-emitting side of display panel 100;

[0028] The light-absorbing layer 300 is located between the display panel 100 and the cover plate 200. The light-absorbing layer 300 includes a plurality of first openings K corresponding one-to-one with the sub-pixels 110. The orthographic projection of the first openings K on the display panel 100 covers the light-emitting area 111 of the corresponding sub-pixel 110.

[0029] Thus, by setting a light-absorbing layer between the display panel and the cover plate, the optical waveguide effect between the non-light-emitting areas of the sub-pixels and the cover plate is eliminated. This eliminates the light from the non-light-emitting areas from emitting light when the sub-pixels emit light, thereby preventing light leakage in the non-light-emitting areas surrounding the light-emitting areas and avoiding the generation of halos around the sub-pixels. This improves the light emission purity of the display device. The multiple first openings on the light-absorbing layer, which correspond one-to-one with the sub-pixels, provide a path for the light from the light-emitting areas to be emitted, enabling the display device to display normally.

[0030] In this display panel 100, the non-light-emitting area 112 is located between adjacent light-emitting areas 111, thereby isolating each light-emitting area 111 and dividing each sub-pixel 110. When the colors of adjacent sub-pixels 110 are different, the non-light-emitting area 112 can prevent color mixing between each sub-pixel 110.

[0031] It should be understood that, such as Figure 2 As shown, Figure 2This is a schematic diagram of a display device without a light-absorbing layer. The area indicated by the dashed frame Q1 is located between the non-emitting area 112 and the cover plate 200. Without the light-absorbing layer, some of the light incident on the display panel into the area indicated by the dashed frame Q1 undergoes total internal reflection at the cover plate 200, and then travels to the non-emitting area 112 where it undergoes total internal reflection again. This causes a waveguide effect between the cover plate 200 and the non-emitting area 112, resulting in a halo around the sub-pixels and reducing the luminous purity of the display device. Therefore, by providing a light-absorbing layer in the area indicated by the dashed frame Q1, the light path between the cover plate 200 and the non-emitting area 112 can be blocked, thereby eliminating the waveguide effect, eliminating the halo around the sub-pixels, and improving the luminous purity of the display device.

[0032] To clearly illustrate the positional relationship between the light-absorbing layer and the sub-pixels, such as Figure 3 As shown, Figure 3 This is a top view showing one side of the light-absorbing layer 300, and Figure 3 The cover plate is not shown in the image. Figure 3 As can be seen, the light-absorbing layer 300 is mesh-like, and the mesh holes are the first openings K in the light-absorbing layer. The light-emitting area 111 of the sub-pixel can be observed from the first opening K. That is, the orthographic projection of the first opening K on the display panel covers the light-emitting area 111 of the corresponding sub-pixel, so that the light in the light-emitting area 112 can be emitted from the first opening, realizing the normal display of the display device.

[0033] certainly, Figure 3 The image only shows that the shape of the first opening K is hexagonal. The shape of the first opening K can also be a circle, rhombus, rectangle or other shapes, which are not specifically limited here.

[0034] Optionally, the shape of the orthographic projection of the first opening on the display panel is the same as the shape of the corresponding sub-pixel. For example, when the sub-pixel is circular, the shape of the orthographic projection of the first opening on the display panel is circular; when the sub-pixel is hexagonal, the shape of the orthographic projection of the first opening on the display panel is hexagonal. Of course, when the sub-pixel is a rhombus, rectangle, or other shapes, the shape of the first opening can be set accordingly. The specific shapes of the sub-pixel and the first opening are not limited here.

[0035] Thus, by setting a first opening corresponding to the shape of the sub-pixel, when light emitted from the light-emitting area in the sub-pixel exits through the first opening, the light emitted from the light-emitting area can exit more uniformly through the first opening, thereby improving the light emission uniformity of the display device. For example, as Figure 4 As shown, Figure 4 This is a top view when the shape of the first opening K is different from that of the light-emitting area 111, and Figure 4 Only one first opening K is shown in the image, from Figure 4As can be seen, the first opening K also covers part of the non-light-emitting area 112. In the area shown by the dashed circles A1 and A2, the light intensity will be significantly reduced due to the distance from the light-emitting area 111. This results in different light intensities of the emitted light from different parts of the first opening K, reducing the light emission uniformity of the display device. Therefore, the shape of the orthographic projection of the first opening K on the display panel is the same as the shape of the corresponding sub-pixel, which can improve the light emission uniformity of the display device.

[0036] Furthermore, in a display panel, the main structure of a subpixel is its light-emitting area. However, when actually dividing subpixels, a non-light-emitting area surrounding the light-emitting area is usually included. To reflect the shape of each light-emitting area, the shape of the subpixel including the non-light-emitting area is usually set to be the same as the shape of the light-emitting area. For example, based on a top-down view of the display panel, when the light-emitting area is circular, the subpixel including the non-light-emitting area can additionally include a ring-shaped non-light-emitting area surrounding the light-emitting area. Thus, the subpixel including the non-light-emitting area is a larger circular area centered on the circular light-emitting area. Therefore, the shape of the subpixel described above can also be understood as the shape of the light-emitting area within the subpixel.

[0037] Furthermore, such as Figure 3 As shown, the orthographic projection of the first opening K on the display panel completely coincides with the light-emitting area 111 of the sub-pixel. Thus, when light emitted from the light-emitting area 111 in the sub-pixel exits through the first opening K, the emissivity of light emitted from the light-emitting area 111 through the first opening K is further increased, thereby further improving the luminous efficacy of the display device. Furthermore, when the orthographic projection of the first opening K on the display panel completely coincides with the light-emitting area 111 of the sub-pixel, the orthographic projection of the light-absorbing layer 300 on the display panel coincides with the non-light-emitting area of ​​the display panel (…). Figure 3 (Not shown in the image) overlaps, thereby further blocking the light path between the cover plate and the non-light-emitting area, eliminating the light waveguide effect, eliminating the halo around the sub-pixel, and further improving the light emission purity of the display device.

[0038] Of course, the orthographic projection of the first opening of the light-absorbing layer onto the display panel can also partially overlap with the light-emitting area of ​​the sub-pixel, such as... Figure 5 As shown, Figure 5 This is a top view showing the first opening K projected onto the display panel and partially coinciding with the light-emitting area 111. Figure 5 Only one first opening K is shown in the image, from Figure 5As can be seen, the first opening K not only covers the light-emitting area 111, but also covers part of the non-light-emitting area 112, thereby increasing the size of the first opening K. This allows the light emitted from the light-emitting area 111 to exit from the first opening K to a greater extent, improving the light efficiency of the display device. Of course, at this time, the light-absorbing layer 300 can still block part of the light path between the cover plate 200 and the non-light-emitting area 112, thereby suppressing the light waveguide effect to a certain extent and improving the light emission purity of the display device.

[0039] Furthermore, in actual display devices, when the size of the light-emitting area is fixed, the first opening can be set larger to reduce the area of ​​the light-absorbing layer and improve the luminous efficacy of the display device. Alternatively, the first opening can be set smaller to block the light path between the cover plate and the non-light-emitting area over a larger area, thereby eliminating halos around the sub-pixels and improving the luminous purity of the display device. Of course, the specific size of the first opening can be selected according to the required luminous efficacy and luminous purity of the display device, and is not specifically limited here.

[0040] Optionally, such as Figure 1 As shown, the display device also includes an optical adhesive layer 400 located between the display panel 100 and the cover plate 200, and a light-absorbing layer 300 located between the optical adhesive layer 400 and the cover plate 200. In this way, the light-absorbing layer 300 can be disposed on the cover plate 200, avoiding damage to the display panel 100 during the fabrication of the light-absorbing layer 300. Furthermore, the light-absorbing layer 300 and the cover plate 200 are then attached to the display panel 100 using the optical adhesive layer 400, thus assembling the display device.

[0041] Or, such as Figure 6 As shown, the display device also includes an optical adhesive layer 400 located between the display panel 100 and the cover plate 200, and a light-absorbing layer 300 located between the optical adhesive layer 400 and the display panel 100. In this way, the light-absorbing layer 300 can be disposed on the display panel 100, avoiding damage to the cover plate 200 during the fabrication of the light-absorbing layer 300. Furthermore, the light-absorbing layer 300 and the display panel 100 are attached to the cover plate 200 using the optical adhesive layer 400, thus assembling the display device.

[0042] It should be understood that when the light-absorbing layer is placed on one side of the cover plate or on one side of the display panel, it can block the light path between the cover plate and the non-light-emitting area, thereby eliminating the light waveguide effect, eliminating the halo around the sub-pixel, improving the light emission purity of the display device, and improving the flexibility of the display device's structural design.

[0043] Optionally, such as Figure 6As shown, when the light-absorbing layer 300 is located between the optical adhesive layer 400 and the display panel 100, the display panel includes: an OLED light-emitting layer 120, a color filter layer 130 located on the side of the OLED light-emitting layer 120 facing the cover plate 200, a lens layer 140 located on the side of the color filter layer 130 facing the cover plate 200, and a planarization layer 150 located on the side of the lens layer 140 facing the cover plate 200; the lens layer 140 includes lens structures 141 that are disposed one-to-one with the sub-pixels 110, and the refractive index of the planarization layer 150 is less than the refractive index of the lens layer 140; the light-absorbing layer 300 is located between the planarization layer 150 and the optical adhesive layer 400.

[0044] in, Figure 6 The display device shown is a Micro OLED (Micro Organic Light-Emitting Diode) display device. The OLED light-emitting layer 120 emits white light, which is converted into various colors of light after passing through the color filter layer 130, such as R (red), G (green), and B (blue), thus achieving color display. The lens structure 141 in the lens layer 140 is used to converge the light emitted from the color filter layer 130, thereby improving the brightness of the display device. The planarization layer 150 can be made of optical adhesive to reduce its impact on the emitted light.

[0045] Thus, when a display device has a lens layer for focusing and brightening, the uneven surface of the lens layer makes it difficult to set up a light-absorbing layer. By setting up an additional planarization layer, the light-absorbing layer can be fabricated on the planarization layer, and the refractive index of the planarization layer is less than the refractive index of the lens structure, so that the lens layer can achieve the effect of focusing and brightening.

[0046] Optionally, such as Figure 6 As shown, the color filter layer 130 includes: a light-shielding layer 132, the light-shielding layer 132 including a second opening corresponding to the first opening K, the second opening being filled with a color filter unit 131; the projected area of ​​the light-absorbing layer 300 on the cover plate 200 is larger than the projected area of ​​the light-shielding layer 132 on the cover plate 200. Figure 6 (Not shown in the image).

[0047] Specifically, the projected area of ​​the light-absorbing layer on the cover plate is larger than the projected area of ​​the light-shielding layer on the cover plate. This can be illustrated as follows: Figure 7 As shown, Figure 7 This is a schematic diagram of the orthographic projection of a portion of the light-absorbing layer 300 and its corresponding portion of the light-shielding layer 132 onto the cover plate 200. Figure 7 The black part is the orthographic projection of the light-absorbing layer 300 onto the cover plate 200, and the black dot-filled part is the orthographic projection of the light-shielding layer 132 onto the cover plate 200.

[0048] Thus, by setting the projected area of ​​the light-absorbing layer on the cover plate to be larger than the projected area of ​​the light-shielding layer on the cover plate, it is possible to prevent the light emitted from the color filter unit from escaping from the corresponding first opening of other adjacent color filter units, thereby further reducing crosstalk in the display device.

[0049] In addition, such as Figure 7 As shown, Figure 7 The black dot represents the center A1 of the first opening in the light-absorbing layer 300, and also the center A2 of the second opening in the light-shielding layer 132, i.e., in Figure 7 The center A1 of the first opening in the light-absorbing layer 300 coincides with the center A2 of the second opening. Thus, the first opening in the light-absorbing layer 300 and the second opening in the light-shielding layer 132 correspond to each other and their centers coincide, so that the light emitted from the second opening can be uniformly emitted from the first opening in all directions, thereby improving the light emission uniformity of the display device.

[0050] Or, such as Figure 8 As shown, the orthographic projection of the light-absorbing layer 300 on the cover plate 200 and the orthographic projection of the light-shielding layer 132 on the cover plate 200 are misaligned. This misalignment can also be understood as the misalignment of the light-absorbing layer 300 and the light-shielding layer 132 in the direction parallel to the cover plate, which can be represented by the center-to-center distance between the first opening and the second opening, such as... Figure 8 As shown, the distance between the center A1 of the first opening and the center A2 of the second opening is d, that is, the distance between the orthographic projection of the light-absorbing layer 300 on the cover plate 200 and the orthographic projection of the light-shielding layer 132 on the cover plate 200 is d.

[0051] In this way, by setting the orthographic projection of the light-absorbing layer on the cover plate and the orthographic projection of the light-shielding layer on the cover plate to be staggered, the amount of light emitted from the first opening through the corresponding second opening is greater in a specific direction, thereby realizing the control of the light emission angle of the display panel and improving the manufacturing flexibility of the display panel.

[0052] It should be understood that a specific direction is related to mutually offset directions. For example, if the orthographic projection of the light-absorbing layer on the cover plate is offset in a first direction relative to the orthographic projection of the light-shielding layer on the cover plate, then the specific direction is the first direction. The first direction can be any direction and can be selected according to the actual application scenario. No limitation is made here.

[0053] Optionally, along a direction perpendicular to the display panel, the transmittance of the light-absorbing layer is less than that of the light-shielding layer. Specifically, when the light-absorbing and light-shielding layers are made of the same material, the transmittance of the light-absorbing layer is less than that of the light-shielding layer, meaning the thickness of the light-absorbing layer is greater than the thickness of the light-shielding layer. In this way, by setting the transmittance of the light-absorbing layer lower, light transmission at the light-absorbing layer can be reduced, further reducing crosstalk in the display device.

[0054] Additionally, when the display device is a Micro OLED display device, such as Figure 6 As shown, the OLED light-emitting layer includes: a driving substrate 121, an anode layer 122 located on the side of the driving substrate 121 facing the cover plate 200, an organic light-emitting layer 123 located on the side of the anode layer 122 facing the cover plate 200, and a cathode layer 124 located on the side of the organic light-emitting layer 123 facing the cover plate 200. The anode layer 122 includes a plurality of anode electrodes 1221 corresponding to the color filter units 131, and adjacent anode electrodes 1221 are isolated from each other by insulating layers 1222. Thus, under the driving of the driving substrate 121, the anode layer 122 and the cathode layer 124 can apply an electric field to the organic light-emitting layer 123, thereby exciting the organic light-emitting layer 123 to emit light.

[0055] like Figure 6 As shown, the Micro OLED display device also includes a first encapsulation layer F1 located between the OLED light-emitting layer 120 and the color filter layer 130, and a second encapsulation layer F2 located between the color filter layer 130 and the lens layer 140. Thus, by setting the first encapsulation layer F1 and the second encapsulation layer F2, external water and oxygen can be isolated, wear during the manufacturing process can be avoided, and the reliability of the display device can be improved.

[0056] The manufacturing process of Micro OLED display devices is relatively simple, and the resolution and yield are both superior. However, due to the absorption of light by the color filter layer, the light efficiency of the display device is low. In addition, the frequency range of light filtered by the color filter layer is large, which leads to low color purity of the display device. The light efficiency can be improved by the lens layer, while the color purity can be improved by the light-absorbing layer provided in this application.

[0057] Of course, the light-absorbing layer can be placed not only in Micro OLED display devices, but also in other types of display devices, such as LCD (Liquid Crystal Display) and OLED (Organic Light-Emitting Diode) display devices. Specifically, taking LCD as an example, such as... Figure 9As shown, the LCD display device includes: a backlight module 500, a first polarizing layer 600 located on the backlight module 500, a display panel 100 located on the side of the first polarizing layer 600 away from the backlight module 500, a second polarizing layer 700 located on the side of the display panel 100 away from the backlight module 500, a light-absorbing layer 300 located on the side of the second polarizing layer 700 away from the backlight module 500, an optical adhesive layer 400 located on the side of the light-absorbing layer 300 away from the backlight module 500, and a cover plate 200 located on the side of the optical adhesive layer 400 away from the backlight module 500. In this case, the light-absorbing layer 300 is disposed between the second polarizing layer 700 and the cover plate 200, which can block the light path between the cover plate 200 and the second polarizing layer 700, thereby eliminating the light waveguide effect, eliminating the halo around the sub-pixels, and improving the luminous purity of the display device.

[0058] In addition, in LCD display devices, if the light-absorbing layer is located between the optical adhesive layer and the second polarizing layer, an additional protective layer can be set between the second polarizing layer and the light-absorbing layer to avoid damage to the second polarizing layer when manufacturing the light-absorbing layer. Alternatively, the light-absorbing layer can be set between the optical adhesive layer and the cover plate to eliminate the influence of manufacturing the light-absorbing layer on the second polarizing layer. The structure of an LCD display device with a light-absorbing layer can be set according to actual needs, and no specific limitation is made here.

[0059] Optionally, the light-absorbing layer is a metal thin film with a thickness greater than or equal to 50 nm and less than or equal to 100 nm; or, the light-absorbing layer is a black photoresist with a thickness greater than or equal to 20 nm and less than or equal to 50 nm. The materials used to fabricate the metal thin film include, but are not limited to, metals such as titanium and molybdenum.

[0060] Therefore, the light-absorbing layer can be made of metal, resulting in a more uniform light-absorbing layer. Metal materials also have better adhesion to the cover plate and stronger light absorption capacity. Alternatively, the light-absorbing layer can be made of black photoresist, which reduces the difficulty and cost of manufacturing the light-absorbing layer. In addition, setting the light-absorbing layer within a certain thickness range can prevent the light-absorbing layer from being too thin, which would result in poor light absorption and thus improve the display effect of the display device. It can also prevent the light-absorbing layer from being too thick, which would increase the thickness of the display device and the difficulty of manufacturing the light-absorbing layer, thereby reducing the thickness and manufacturing cost of the display device.

[0061] Based on the same inventive concept, this utility model embodiment also provides a method for manufacturing a display device. The implementation principle of this method is similar to that of the aforementioned display device. The specific implementation of this method can be found in the aforementioned display device embodiment, and repeated details will not be described again.

[0062] Specifically, the present invention provides a method for manufacturing a display device, comprising:

[0063] S801. Fabricate the display panel and cover plate separately; the display panel includes sub-pixels arranged in an array;

[0064] S802. A light-absorbing layer is formed between the display panel and the cover plate; the cover plate is located on the light-emitting side of the display panel; the light-absorbing layer includes a plurality of first openings corresponding one-to-one with the sub-pixels, and the orthographic projection of the first openings on the display panel covers the corresponding sub-pixels.

[0065] Thus, by creating a light-absorbing layer between the display panel and the cover plate, the waveguide effect between the non-light-emitting areas of the sub-pixels and the cover plate is eliminated. This eliminates the light leakage in the non-light-emitting areas when the sub-pixels emit light, thereby preventing light leakage in the non-light-emitting areas surrounding the light-emitting areas and avoiding the generation of halos around the sub-pixels. This improves the light emission purity of the display device. The multiple first openings on the light-absorbing layer, which correspond one-to-one with the sub-pixels, provide a path for the light to be emitted from the light-emitting areas, enabling the display device to display normally.

[0066] Optionally, fabricating a light-absorbing layer between the display panel and the cover plate includes: fabricating a light-absorbing layer on the cover plate; applying an optical adhesive layer on the cover plate and the light-absorbing layer; and attaching the display panel on the optical adhesive layer. In this way, by fabricating the light-absorbing layer on the cover plate, damage to the display panel during the fabrication of the light-absorbing layer can be avoided. The entire assembly of the light-absorbing layer and the cover plate is then attached to the display panel using the optical adhesive layer, thus achieving the assembly of the display device.

[0067] Optionally, fabricating a light-absorbing layer between the display panel and the cover plate includes: fabricating a light-absorbing layer on the display panel; applying an optical adhesive layer on the display panel and the light-absorbing layer; and attaching the cover plate on the optical adhesive layer. In this way, by fabricating the light-absorbing layer on the display panel, damage to the cover plate during the fabrication of the light-absorbing layer can be avoided. The entire assembly of the light-absorbing layer and the display panel is then attached to the display panel using the optical adhesive layer, thus achieving the assembly of the display device.

[0068] The following explanation, in conjunction with specific embodiments, details the method for fabricating the light-absorbing layer in the display panel provided by this utility model.

[0069] When the light-absorbing layer is a metal thin film:

[0070] S11, such as Figure 10 As shown in (a), metal layer 1 is fabricated.

[0071] The metal layer 1 can be fabricated using physical vapor deposition, but is not limited to a single layer. The position of the metal layer 1 can be, but is not limited to, on the cover plate, planarization layer, or polarizer. The specific location can be determined based on the specific structure of the display panel.

[0072] S12, such as Figure 10 As shown in (b), photoresist 2 is coated on metal layer 1.

[0073] S13, such as Figure 10 As shown in (c), the photoresist 2 is exposed and developed.

[0074] In this process, after the photoresist 2 is exposed and developed, multiple first openings appear on the photoresist 2, exposing the metal layer 1 at the first openings, and these first openings correspond one-to-one with the light-emitting areas of the sub-pixels in the display panel.

[0075] S14, such as Figure 10 As shown in (d), metal layer 1 is etched to form light-absorbing layer 300.

[0076] In this process, the etching of the metal layer 1 can be carried out using a dry etching process, and the template used for etching is the photoresist 2 after exposure and development. Etching is stopped after the structure under the metal layer 1 (such as a cover plate, planarization layer or polarizer) is exposed, and the photoresist 2 is removed after etching is completed. This allows the formation of a first opening K in the metal layer 1 that corresponds one-to-one with the light-emitting area of ​​the sub-pixel in the display panel after etching, and the unetched part forms a light-absorbing layer 300.

[0077] Thus, the light-absorbing layer made of metal thin film can be obtained through the above steps S11 to S14.

[0078] When using black photoresist at the light-absorbing layer:

[0079] S21, such as Figure 11 As shown in (a), a black photoresist layer 3 is coated.

[0080] The black photoresist layer 3 is a single layer and is used to absorb light. Therefore, its thickness can be different from that of photoresist used as a mask. For example, it can be set to 20nm to 50nm to achieve effective light absorption.

[0081] S22, such as Figure 11 As shown in (b), the black photoresist layer 3 is exposed and developed to form a light-absorbing layer 300.

[0082] In this process, after the black photoresist layer 3 is exposed and developed, multiple first openings K appear on the black photoresist layer 3. The structures (such as cover plates, planarization layers, or polarizers) under the black photoresist layer 3 are exposed at the first openings K. These first openings K correspond one-to-one with the light-emitting areas of the sub-pixels in the display panel, so that the black photoresist layer 3 that has not been removed forms a light-absorbing layer 300.

[0083] Thus, the light-absorbing layer made of black photoresist can be obtained through the above steps S21 and S22.

[0084] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A display device, characterized in that, include: The display panel includes sub-pixels arranged in an array; A cover plate is located on the light-emitting side of the display panel; A light-absorbing layer is located between the display panel and the cover plate. The light-absorbing layer includes a plurality of first openings that correspond one-to-one with the sub-pixels. The orthographic projection of the first opening on the display panel covers the light-emitting area of ​​the corresponding sub-pixel.

2. The display device as claimed in claim 1, characterized in that, The display device further includes: an optical adhesive layer located between the display panel and the cover plate, wherein the light-absorbing layer is located between the optical adhesive layer and the cover plate.

3. The display device as described in claim 1, characterized in that, The display device further includes: an optical adhesive layer located between the display panel and the cover plate, wherein the light-absorbing layer is located between the optical adhesive layer and the display panel.

4. The display device as described in claim 3, characterized in that, The display panel includes: an OLED light-emitting layer, a color filter layer located on the side of the OLED light-emitting layer facing the cover plate, a lens layer located on the side of the color filter layer facing the cover plate, and a planarization layer located on the side of the lens layer facing the cover plate; the lens layer includes lens structures that are disposed one-to-one with the sub-pixels, and the refractive index of the planarization layer is less than the refractive index of the lens layer; the light-absorbing layer is located between the planarization layer and the optical adhesive layer.

5. The display device as described in claim 4, characterized in that, The color filter layer includes: a light-shielding layer, the light-shielding layer including a second opening that corresponds one-to-one with the first opening, and the second opening is filled with a color filter unit; The projected area of ​​the light-absorbing layer on the cover plate is larger than the projected area of ​​the light-shielding layer on the cover plate.

6. The display device as claimed in claim 5, characterized in that, The light-absorbing layer and the light-shielding layer are misaligned on the cover plate.

7. The display device as described in claim 5 or 6, characterized in that, Along a direction perpendicular to the display panel, the light transmittance of the light-absorbing layer is less than that of the light-shielding layer.

8. The display device according to any one of claims 1-4, characterized in that, The shape of the orthographic projection of the first opening onto the display panel is the same as the shape of the corresponding sub-pixel.

9. The display device as claimed in claim 8, characterized in that, The orthographic projection of the first opening onto the display panel completely coincides with the light-emitting area of ​​the sub-pixel.

10. The display device as claimed in claim 1, characterized in that, The light-absorbing layer is a metal thin film, and the thickness of the light-absorbing layer is greater than or equal to 50 nm and less than or equal to 100 nm. Alternatively, the light-absorbing layer is a black photoresist, and the thickness of the light-absorbing layer is greater than or equal to 20 nm and less than or equal to 50 nm.

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