Display panel and electronic device

Abstract

The application discloses a display panel and electronic equipment, and relates to the technical field of display devices, and the display panel comprises an array substrate, a display array located on the array substrate, the display array comprising a plurality of light emitting elements, a thin film packaging layer located on the surface of the side of the display array away from the array substrate, a first anti-reflection layer located on the side of the thin film packaging layer away from the display array, a cover plate located on the side of the first anti-reflection layer away from the array substrate, and the side surface of the cover plate towards the first anti-reflection layer is provided with an adhesive layer; wherein the first anti-reflection layer comprises a plurality of first regions corresponding to the light emitting elements; the light transmittance of the first region is less than that of the adhesive layer. The application does not need a color resistance layer and a polaroid, and the reflection of the panel to ambient light can be reduced through the first anti-reflection layer with low transmittance.

Description

Technical Field

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

[0002] With the continuous development of science and technology, more and more electronic devices with display functions are being widely used in people's daily lives and work, bringing great convenience to people's daily lives and work, and becoming an indispensable tool for people today.

[0003] The main component that enables electronic devices to display their functions is the display panel. Organic light-emitting diode (OLED) display panels, with their advantages of self-illumination, high contrast, thinness, and fast response speed, are widely used in various electronic devices such as mobile phones, tablets, and smart wearables, and have become one of the mainstream display panels today.

[0004] In the actual use of OLED display panels, ambient light is easily reflected at the metal traces and film interfaces inside the panel, causing serious screen reflection, reduced image contrast, and poor outdoor visibility. Therefore, the industry generally sets up anti-reflection structures in display panels to reduce ambient light reflection and improve display effect. Summary of the Invention

[0005] In view of the above problems, this application provides a display panel and an electronic device, the specific solution of which is as follows:

[0006] The first aspect of this application provides a display panel, including:

[0007] Array substrate;

[0008] A display array located on an array substrate, the display array comprising multiple light-emitting elements;

[0009] A thin-film encapsulation layer located on the surface of the display array facing away from the array substrate;

[0010] The first antireflective layer is located on the side of the thin-film encapsulation layer opposite to the display array;

[0011] A cover plate located on the side of the first antireflective layer away from the array substrate, the surface of the cover plate facing the first antireflective layer having an adhesive layer;

[0012] The first antireflective layer includes multiple first regions corresponding to the light-emitting elements; the light transmittance of the first regions is less than that of the adhesive layer.

[0013] As described above, the display panel provided by this application includes a first anti-reflection layer on the thin-film encapsulation layer, and a cover plate is bonded and fixed above the first anti-reflection layer by an adhesive layer. The first anti-reflection layer includes a first region corresponding to the light-emitting element, and the transmittance of the first region is lower than that of the adhesive layer. The adhesive layer is a high-transmittance material, and the first region is a low-transmittance material. The low-transmittance first region can absorb some of the incident ambient light and also absorb ambient light reflected by other panel film layers below the first anti-reflection layer. Therefore, the first region can effectively reduce the reflectivity of the display panel to ambient light, improve the display effect, and reduce the reflection of ambient light by the panel without the need for a color resist layer and a polarizer, simplifying the panel structure and manufacturing process and reducing process costs.

[0014] A second aspect of this application provides an electronic device including the aforementioned display panel.

[0015] As can be seen from the above description, the electronic device provided by this application uses the aforementioned display panel, which can reduce the reflection of ambient light and improve the display effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0018] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0025] Figure 8 This is a schematic diagram illustrating the layout of light-emitting elements in a display panel according to an embodiment of this application.

[0026] Figure 9 A view showing another layout of light-emitting elements in a display panel provided in an embodiment of this application;

[0027] Figure 10 for Figure 9 The diagram shows a cross-sectional view of the display panel along the A-A' direction;

[0028] Figure 11 A schematic diagram illustrating the layout of light-emitting elements and corresponding grooves in the first anti-reflection layer in a display panel, as provided in an embodiment of this application.

[0029] Figure 12 A schematic diagram showing another arrangement of light-emitting elements and corresponding grooves in the first anti-reflection layer in a display panel provided in an embodiment of this application;

[0030] Figure 13 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0031] Figure 14 A schematic diagram illustrating the principle of constructing a microlens for the first light-transmitting layer and the first anti-reflective layer;

[0032] Figure 15 This is a schematic diagram illustrating another principle of constructing a microlens in a display panel using a first light-transmitting layer and a first anti-reflection layer, as provided in an embodiment of this application.

[0033] Figure 16 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0034] Figure 17 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0035] Figure 18 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0036] Figure 19This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0037] The annotations in the attached figures are explained as follows:

[0038] The array substrate 101, display array 102, light-emitting element 103, anode 1031, organic light-emitting layer 1032, cathode layer 1033, thin film encapsulation layer 104, first inorganic thin film 1041, organic thin film 1042, second inorganic thin film 1043, first anti-reflection layer 105, first region 1051, second region 1052, adhesive layer 106, cover plate 107, pixel definition layer 108, touch layer 109, groove 110, first light-transmitting layer 112, second anti-reflection layer 113, touch electrode 114, bridge 115, red light-emitting element R, green light-emitting element G, blue light-emitting element B, thickness direction Z, first direction X, second direction Y, first light-emitting element 103a, second light-emitting element 103b, and third light-emitting element 103c. Detailed Implementation

[0039] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0040] In OLED display panels, the internal metal traces and film structures have a high reflectivity to ambient light, causing severe screen glare, reduced image contrast, and poor outdoor visibility. Currently, the mainstream anti-reflection solutions are mainly divided into two types:

[0041] The first anti-reflection solution involves placing a polarizer (POL) between the thin-film encapsulation layer (TFE) and the cover plate. This solution utilizes the optical properties of the polarizer to counteract ambient light reflection. However, the overall transmittance of the polarizer is low, typically around 44.5% in the visible light band. While eliminating ambient light, it also significantly reduces the display light emitted by the light-emitting element, increasing the power consumption of the display panel to ensure image brightness.

[0042] The second anti-reflection solution employs Color Filter on-TFE (COE) technology. This solution involves directly fabricating a black matrix layer on the thin-film encapsulation layer, with color resist layers (CFs) of the corresponding color placed within the openings of each light-emitting element. This solution effectively reduces the reflectivity of the display panel to ambient light and saves 25-30% of energy compared to the first solution. However, because the color resist materials have monochromatic light transmission bands and cutoffs for other wavelengths, green color resist materials transmit green light while blocking other colors, red color resist materials transmit red light while blocking other colors, and blue color resist materials transmit blue light while blocking other colors. Therefore, to reduce the panel's reflection of ambient light using color resist materials, different colored color resist layers need to be fabricated above the light-emitting elements of different colors. Therefore, the process of this scheme is complex, requiring four additional patterning processes to prepare the black matrix layer, red color resist layer, green color resist layer and blue color resist layer respectively. Each patterning process requires a separate mask, which greatly increases the process complexity and product cost.

[0043] Therefore, effectively reducing the reflectivity of display panels to ambient light while reducing power consumption, simplifying the manufacturing process, and lowering costs have become urgent technical problems to be solved in this field.

[0044] In view of this, embodiments of this application provide a display panel, the display panel comprising:

[0045] Array substrate;

[0046] A display array located on an array substrate, the display array comprising multiple light-emitting elements;

[0047] A thin-film encapsulation layer located on the surface of the display array facing away from the array substrate;

[0048] The first antireflective layer is located on the side of the thin-film encapsulation layer opposite to the display array;

[0049] A cover plate located on the side of the first antireflective layer away from the array substrate, the surface of the cover plate facing the first antireflective layer having an adhesive layer;

[0050] The first antireflective layer includes multiple first regions corresponding to the light-emitting elements; the light transmittance of the first regions is less than that of the adhesive layer.

[0051] In the display panel provided in this application embodiment, the first antireflection layer includes a first region corresponding to the light-emitting element. The light transmittance of the first region is less than that of the adhesive layer. The adhesive layer is a high-transmittance material, and the first region is a low-transmittance material. The first region can absorb some of the incident ambient light and also absorb ambient light reflected by other panel film layers below the first antireflection layer. Therefore, the first region effectively reduces the reflectivity of the display panel to ambient light and improves the display effect.

[0052] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. The display panel 100 shown includes:

[0054] Array substrate 101;

[0055] A display array 102 is located on an array substrate 101, and the display array 102 includes a plurality of light-emitting elements 103;

[0056] A thin film encapsulation layer 104 is located on the surface of the display array 102 facing away from the array substrate 101;

[0057] The first anti-reflection layer 105 is located on the side of the thin-film encapsulation layer 104 facing away from the display array 102;

[0058] A cover plate 107 is located on the side of the first antireflective layer 105 away from the array substrate 101. The surface of the cover plate 107 facing the first antireflective layer 105 has an adhesive layer 106. The adhesive layer 106 can directly contact and bond to the first antireflective layer 105, or the adhesive layer 106 and the first antireflective layer 105 can be bonded and fixed based on other intermediate film layers.

[0059] The first antireflective layer 105 includes a plurality of first regions 1051 corresponding to the light-emitting element 103; the light transmittance of the first region 1051 is less than that of the adhesive layer 106.

[0060] The light-emitting element 103 is an OLED unit. For example... Figure 1 As shown, along the thickness direction Z of the panel, the light-emitting element 103 includes an anode 1031, an organic light-emitting layer 1032, and a cathode layer 1033 stacked sequentially. The cathode layer 1033 of each light-emitting element 103 is a common transparent electrode layer.

[0061] The display array 102 includes three light-emitting elements 103 with different colors of light emission, which can be red light-emitting element R, green light-emitting element G, and blue light-emitting element B, respectively.

[0062] In one implementation, such as Figure 1 As shown, light-emitting elements 103 of different colors have organic light-emitting layers 1032 of different thicknesses, so that the wavelength of the light emitted by each light-emitting element 103 satisfies the microcavity resonance condition, thereby improving the light extraction efficiency of the light-emitting element 103 and reducing viewpoint color deviation. In other cases, light-emitting elements 103 of different colors can also use organic light-emitting layers 1032 of the same thickness.

[0063] The array substrate 101 includes a substrate and a circuit layer located on the substrate. The circuit layer includes pixel circuits connected to light-emitting elements. The pixel circuits are capable of controlling the light-emitting elements to display images. Figure 1 The substrate and circuit layers are not shown in the diagram.

[0064] like Figure 1 As shown, an anode metal layer is disposed on the surface of the array substrate 101, and the anode metal layer includes an anode 1031 corresponding to each of the light-emitting elements 103. A pixel definition layer 108 is covered on the anode metal layer, and the pixel definition layer 108 has a pixel opening corresponding to each of the light-emitting elements 103. The pixel opening exposes at least a portion of the anode 1031 of the corresponding light-emitting element 103. An organic light-emitting layer 1032 is disposed on the surface of the anode 1031 within the pixel opening, and a transparent conductive layer serving as a common cathode layer 1033 is covered on the surface of the organic light-emitting layer 1032.

[0065] The thin-film encapsulation layer 104 includes a first inorganic thin film 1041, an organic thin film 1042, and a second inorganic thin film 1043, sequentially stacked along the thickness direction Z. In the thin-film encapsulation layer 104, the upper and lower inorganic thin films act as a dense barrier, preventing external moisture and oxygen from penetrating into the light-emitting element 103. The middle organic thin film 1042 buffers the stress between the inorganic layers and flattens the film surface. The synergistic effect of the three thin films in the thin-film encapsulation layer 104 achieves effective physical encapsulation and chemical protection for the underlying light-emitting element 103, significantly extending the lifespan and reliability of the display panel.

[0066] In the display panel 100 provided in this embodiment, the first antireflection layer 105 includes a first region 1051 corresponding to the light-emitting element 103. The light transmittance of the first region 1051 is less than that of the adhesive layer 106. The adhesive layer 106 is a high-transmittance material, while the first region 1051 is a low-transmittance material. The first region 1051 can absorb some of the incident ambient light and also absorb ambient light reflected by other panel film layers below the first antireflection layer 105. Therefore, the first region 1051 effectively reduces the reflectivity of the display panel 100 to ambient light, thus improving the display effect.

[0067] In the display panel 100, the adhesive layer 106 that bonds and fixes the cover plate 107 mainly uses optically transparent adhesive (OCA) with high light transmittance, which is at least greater than 90%. Therefore, ambient light incident on the display panel and reflected light reflected by the film layer in the display panel can both pass through the adhesive layer 106 with high transmittance.

[0068] Optionally, the first antireflective layer 105 is an organic light-transmitting layer (OC) with a first transmittance in the visible light band. The first transmittance is less than the transmittance of the adhesive layer 106, so that the transmittance of the first region 1051 is less than the transmittance of the adhesive layer 106. Optionally, the first transmittance can be 40% to 80%. Further, the first transmittance is not less than 50%, so that the transmittance of the first antireflective layer 105 is greater than its absorbance, reducing the absorption rate of light emitted from the light-emitting element 103, ensuring display brightness, and reducing display power consumption. The transmittance of the organic light-transmitting layer is greater than that of the polarizer, which can improve the panel display brightness, thereby saving approximately 15% of power consumption.

[0069] The organic light-transmitting layer includes a light-absorbing material, which includes at least one of carbon black, acetylene black, a resin containing acrylic groups, and a resin containing polyimide groups.

[0070] Furthermore, since the first antireflective layer 105 can absorb ambient light to a certain extent, the reflected hue can be adjusted and the display effect optimized by using a patterned design of the first antireflective layer 105 on the light-emitting elements 103 of different colors. The first antireflective layer 105 satisfies the uniformity transmission condition for the transmittance of different colors of visible light in the visible light band, so that the transmittance difference of different colors of visible light in the first region 1051 does not exceed 10%. Therefore, the first region 1051 has full-spectrum uniform transmittance performance in the visible light band, and different colors of visible light have the same or approximately the same transmittance in the first region 1051. The first region 1051 does not have a monochromatic light passband or other band cutoff characteristics, and has full-spectrum transmittance characteristics in the visible light band. The first region 1051 is a full-spectrum transmittance structure in the visible light band. The transmittance of red, green, and blue light in the first region 1051 can be the same or approximately the same, and the transmittance difference of different colors of light in the first region 1051 is less than 10%. Therefore, in this embodiment, the same first antireflection layer 105 can be used to form a first region 1051 of the same material above each light-emitting element 103. The first regions 1051 above light-emitting elements 103 of different colors can be prepared simultaneously. The first regions 1051 above all light-emitting elements can be formed simultaneously by using the same patterning process.

[0071] In one embodiment, the first antireflection layer 105 includes a plurality of separate sub-blocks corresponding one-to-one with the light-emitting element 103, each sub-block being a first region 1051. In this way, the patterned first antireflection layer 105 can be formed using the same patterning process, and the desired patterned first antireflection layer 105 can be formed using a single photomask.

[0072] refer to Figure 2 , Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application. Based on the above embodiments, Figure 2 In the display panel shown, the first antireflective layer 105 further includes a second region 1052 surrounding the first region 1051; wherein the light transmittance of the second region 1052 is not greater than the light transmittance of the first region 1051.

[0073] exist Figure 2 In the illustrated manner, the first antireflection layer 105 can not only reduce the reflection of ambient light by the display panel in the first region 1051, but also reduce the transmittance of the display panel to ambient light in the second region 1052 through the second region 1052, which has a transmittance not exceeding that of the first region 1051, thereby further reducing the reflectance of the display panel to ambient light.

[0074] In one implementation, such as Figure 2 As shown, the thickness of the first region 1051 is the same as the thickness of the second region 1052, and the light transmittance of the first region 1051 and the second region 1052 is the same. In this method, the first region 1051 and the second region 1052 are an integral structure with the same thickness and the same light transmittance. In this way, a uniformly thick first antireflective layer 105 can be directly formed on top of the thin film encapsulation layer 104 without patterning the first antireflective layer 105. Compared with the conventional solution of using a color resist layer to reduce the reflection of ambient light by the display panel, this can save one mask required for black matrix patterning, and also save three masks required for patterning three different color resist layers.

[0075] refer to Figure 3 , Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of this application. In this configuration, the first region 1051 has a groove 110, the depth of which is less than the thickness of the first antireflection layer 105. In this configuration, a photomask can be used to pattern the first antireflection layer 105 to form the desired patterned structure of the first antireflection layer 105.

[0076] exist Figure 3In the illustrated configuration, the thickness of the first region 1051 is less than the thickness of the second region 1052. A groove 110 can be formed in the first region 1051 of the first antireflective layer 105, resulting in a thinner first antireflective layer 105 in the first region 1051. Thus, the first antireflective layer 105 has a smaller thickness in the first region 1051. In the region above the light-emitting element 103, the first antireflective layer 105 can reduce the absorption of light emitted from the light-emitting element 103 by its smaller thickness, thereby improving display brightness. In the gap region between the light-emitting elements 103, the first antireflective layer 105 can increase the absorption of ambient light by its larger thickness, thereby reducing the reflectivity of ambient light.

[0077] In one approach, such as Figure 3 As shown, light-emitting elements 103 of different colors can be correspondingly provided with grooves 110 of the same depth. For example... Figure 3 As shown, the first antireflective layer 105 above the red light-emitting element R, the green light-emitting element G, and the blue light-emitting element B all have grooves 110 of depth H0. In this method, the first antireflective layer 105 forms grooves 110 of the same depth in the first region 1051 corresponding to the light-emitting elements 103 of different colors, so that each groove 110 in the first antireflective layer 105 can be fabricated using the same photolithography process parameters, simplifying the fabrication process of the grooves 110 in the first antireflective layer 105.

[0078] refer to Figure 4 , Figure 4 This is a schematic diagram of another display panel structure provided in an embodiment of this application. Based on other embodiments, Figure 4 In the display panel shown, the grooves corresponding to the same color light-emitting elements 103 have the same depth. Taking the red light-emitting element R as an example, the grooves 110 corresponding to the red light-emitting element R have the same depth H0.

[0079] Figure 4 In the display panel shown, the first antireflection layer 105 can form grooves 110 of the same depth in the opposite areas of the light-emitting elements 103 of the same color. These grooves 110 can be prepared by the same photolithography process parameters, which simplifies the preparation process of the grooves 110 in the first antireflection layer 105.

[0080] Under the same driving current, a higher luminous efficiency of the light-emitting element 103 results in greater brightness, and vice versa. The red light-emitting element R, green light-emitting element G, and blue light-emitting element B employ different organic light-emitting layers 1032 made of different organic light-emitting materials, leading to differences in brightness under the same driving current. This difference can cause color shift issues in the displayed image. In conventional display panels, a complex display compensation scheme is needed to improve the uniformity of brightness among the different light-emitting elements 103 to solve this problem.

[0081] refer to Figure 5 , Figure 5 This is a schematic diagram of another display panel structure provided in an embodiment of this application. Based on other embodiments, Figure 5 In the display panel shown, the grooves 110 corresponding to at least two different light-emitting elements 103 of different colors have different depths. Taking a red light-emitting element R and a green light-emitting element G as examples, the depth of the groove 110 corresponding to the red light-emitting element R is H2, and the depth of the groove 110 corresponding to the green light-emitting element G is H1, where H1 ≠ H2.

[0082] The depth of the groove 110 is negatively correlated with the thickness of the first antireflective layer 105 at the bottom of the groove; the greater the depth of the groove 110, the thinner the first antireflective layer 105 at the bottom of the groove. The light absorption of the first antireflective layer 105 is positively correlated with its thickness; the greater the thickness of the first antireflective layer 105, the stronger its light absorption effect. Therefore, light-emitting elements 103 with different brightness can have their display brightness balanced by grooves 110 of different depths. For light-emitting elements 103 with higher brightness, a smaller groove depth can be used to provide a thicker first antireflective layer 105 above the light-emitting element 103, thereby reducing the display brightness of the light-emitting element 103 to a greater extent and thus reducing the difference in display brightness between light-emitting elements 103 with different colors.

[0083] When the depths of the grooves 110 corresponding to two light-emitting elements 103 with different luminous colors are different, the groove depth is negatively correlated with the luminous efficiency of the relative light-emitting element 103. That is, the light-emitting element 103 with high luminous efficiency corresponds to a groove 110 with a smaller depth, and the light-emitting element 103 with low luminous efficiency corresponds to a groove 110 with a larger depth. This makes the thickness of the first anti-reflection layer 105 above the light-emitting element 103 match the luminous brightness of the light-emitting element 103, thereby reducing the difference in display brightness between light-emitting elements 103 of different colors.

[0084] In the display panel, the opening areas of light-emitting elements 103 of different colors can be the same or different.

[0085] When the opening areas of light-emitting elements 103 with different emission colors are different, the light-emitting elements 103 in the first anti-reflection layer 105 can correspond to grooves 110 of different depths. In this method, the difference in display brightness between the two light-emitting elements 103 with different emission colors is balanced by the difference in the opening area of ​​the light-emitting elements 103. At this time, the light-emitting element 103 with a larger opening area has a greater reflection effect on ambient light in the pixel opening area, and the reflection of ambient light by light-emitting elements 103 with different emission colors in the pixel opening area can be balanced by the grooves 110 of different depths. Specifically, the light-emitting element 103 with a larger opening area is provided with a groove 110 of smaller depth to improve the absorption rate of ambient light through the first anti-reflection layer 105 with a larger thickness; the light-emitting element 103 with a smaller opening area is provided with a groove 110 of larger depth to reduce the absorption rate of ambient light through the first anti-reflection layer 105 with a smaller thickness. In this way, the difference in the reflection of ambient light by light-emitting elements 103 with different opening areas can be balanced. In this method, through the coordinated design of the opening area difference of the light-emitting element 103 and the corresponding groove depth difference, the display brightness and reflectivity of the light-emitting elements 103 with different light-emitting colors are balanced, and the uniformity of the display brightness and reflectivity of the light-emitting elements 103 with different light-emitting colors can be taken into account.

[0086] When the opening areas of light-emitting elements 103 of different colors are the same, in the first anti-reflection layer 105, the light-emitting elements 103 can correspond to grooves 110 of different depths. Since the light-emitting elements 103 of different colors have the same opening area, the reflection of ambient light by the light-emitting elements 103 in the pixel opening area is basically the same. At this time, since the luminous efficiency of the light-emitting elements 103 of different colors is different, their display brightness is different. The difference in display brightness of the light-emitting elements 103 of different colors can be balanced by grooves 110 of different depths. Specifically, under the same driving current, the light-emitting element 103 with higher luminous efficiency has higher luminous brightness. A shallow groove 110 is formed above the light-emitting element 103 to improve the absorption rate of displayed light through the thicker first anti-reflection layer 105. Conversely, the light-emitting element 103 with lower luminous efficiency has lower luminous brightness. A deeper groove 110 is formed above the light-emitting element 103 to reduce the absorption rate of displayed light through the thinner first anti-reflection layer 105. This balances the difference in display brightness among light-emitting elements 103 with the same opening area and emitting color. In this method, by differentiating the depth of the groove 110 corresponding to the light-emitting element 103, light-emitting elements 103 with different luminous brightness can have the same display brightness. The three types of light-emitting elements 103 do not need to have differentiated opening areas; a uniform opening area can be used, facilitating the patterning of pixel openings in the pixel definition layer 108.

[0087] The opening area of ​​the light-emitting element 103 can be the top area of ​​the pixel opening in the pixel definition layer 108 where the light-emitting element 103 is located, or the bottom area of ​​the pixel opening in the pixel definition layer 108 where the light-emitting element 103 is located.

[0088] The luminance of the light-emitting element 103 is the initial luminance of the light emitted from the light-emitting element 103. The display luminance of the light-emitting element 103 is the luminance of the light emitted from the light-emitting element 103 after passing through the first anti-reflection layer 105.

[0089] Figure 5 In the display panel shown, the grooves 110 corresponding to at least two different light-emitting elements 103 of different colors have different depths. By differentiating the groove depths corresponding to the light-emitting elements 103 of different colors, the problem of image color shift caused by the difference in luminous brightness of the light-emitting elements 103 of different colors can be solved. For light-emitting elements 103 with high luminous efficiency and strong display brightness, a groove 110 with a smaller depth can be used, so that the first anti-reflection layer 105 above the light-emitting element 103 has a larger thickness, thereby reducing the transmittance of the light emitted by the light-emitting element 103. For light-emitting elements 103 with low luminous efficiency and weak display brightness, a groove 110 with a larger depth can be used, so that the first anti-reflection layer 105 above the light-emitting element 103 has a smaller thickness, thereby increasing the transmittance of the light emitted by the light-emitting element 103. In this way, without the need for a complex display compensation scheme, simply by differentiating the thickness of the first anti-reflection layer 105 on the light-emitting elements 103 of different colors, the image color shift caused by the luminous brightness of the light-emitting elements 103 of different colors can be reduced or even avoided. If the luminous efficiency of the green light-emitting element G is greater than that of the red light-emitting element R, the luminous brightness of the green light-emitting element G is greater than that of the red light-emitting element R under the same driving current. Therefore, H2 > H1 can be set to compensate for the color shift caused by the difference in display brightness between the two.

[0090] In the first antireflection layer 105, when there are grooves 110 of different depths, grooves 110 of different depths can be formed by grayscale exposure process. Similarly, the grooves 110 on all light-emitting elements 103 can be prepared simultaneously by the same patterning process.

[0091] When the depths of the grooves 110 corresponding to at least two different light-emitting elements 103 of different colors are different, in one approach, it can be as follows: Figure 6 As shown, the grooves 110 corresponding to two different light-emitting elements 103 with different light-emitting colors are set to have different depths, and the grooves 110 corresponding to two other different light-emitting elements 103 with the same depth are set to have the same depth.

[0092] refer to Figure 6 , Figure 6 This is a schematic diagram of another display panel structure provided in an embodiment of this application. Based on other embodiments, Figure 6 In the display panel shown, the multiple light-emitting elements 103 in the display array 102 include a first light-emitting element 103a, a second light-emitting element 103b, and a third light-emitting element 103c, each emitting a different color. The groove depth corresponding to the first light-emitting element 103a is H1, the groove depth corresponding to the second light-emitting element 103b is H2, and the groove depth corresponding to the third light-emitting element 103c is H3. The difference in opening area between the first light-emitting element 103a and the second light-emitting element 103b is less than the difference in opening area between the first light-emitting element 103a and the third light-emitting element 103c, where H1 = H2 and H3 ≠ H2. The difference in opening area between the two light-emitting elements 103 is the larger opening area minus the smaller opening area, i.e., the difference in opening area is a positive number.

[0093] In one embodiment, taking a first light-emitting element 103a as a green light-emitting element G, a second light-emitting element 103b as a red light-emitting element R, and a third light-emitting element 103c as a blue light-emitting element B as an example, the opening areas of the green light-emitting element G, the red light-emitting element R, and the blue light-emitting element B increase sequentially, and the area difference between the green light-emitting element G and the red light-emitting element R is less than the area difference between the green light-emitting element G and the blue light-emitting element B. The groove depth H1 corresponding to the green light-emitting element G is equal to the groove depth H2 corresponding to the red light-emitting element R, but not equal to the groove depth H3 corresponding to the blue light-emitting element B.

[0094] exist Figure 6 In the illustrated configuration, the first light-emitting element 103a and the second light-emitting element 103b, which have a small difference in opening area, correspond to the same groove depth. The third light-emitting element 103, which has a large difference in opening area from the first light-emitting element 103a, has a separate groove depth. Only two different groove depths are needed in the first anti-reflection layer 105, which simplifies the design complexity of the groove depth in the first anti-reflection layer 105 and reduces the difficulty of the patterning process of the first anti-reflection layer 105.

[0095] When H1 = H2 and H3 ≠ H2, as follows Figure 6 As shown, the opening areas of the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c can increase sequentially, i.e., S3 > S2 > S1. This method requires three light-emitting elements 103 to correspond to three different opening areas. In other methods, when H1 = H2 and H3 ≠ H2, the first light-emitting element 103a and the second light-emitting element 103b can have the same opening area, both of which are smaller than the opening area of ​​the third light-emitting element 103c, i.e., S3 > S2 = S1. This method requires three light-emitting elements 103 to correspond to two different opening areas.

[0096] For two light-emitting elements 103 with different emission colors, if their opening areas are different and corresponding grooves 110 have different depths, the groove depth is set to be inversely proportional to the opening area, that is, the larger the opening area, the smaller the groove depth. This is because when the opening areas of the two light-emitting elements 103 are different, the main factor affecting the image display quality is that the different opening areas lead to different reflectivities of the metal electrodes (anodes or cathodes) to ambient light. The light-emitting element 103 with a larger opening area has a larger metal electrode in the pixel opening area, and has a larger reflectivity to ambient light. Correspondingly, a groove 110 with a smaller thickness is set. The absorption rate of the pixel opening area of ​​the light-emitting element 103 to ambient light can be improved by the first anti-reflection layer 105 with a larger thickness, so as to balance the reflectivity of light-emitting elements 103 with different opening areas to ambient light.

[0097] Due to the limitations of the properties of current organic light-emitting materials, the luminous efficiency of the three light-emitting elements 103 with different luminous colors is different. For example, the difference in luminous efficiency between the first light-emitting element 103a and the second light-emitting element 103b is smaller than the difference in luminous efficiency between the first light-emitting element 103a and the third light-emitting element 103c. Therefore, H1 = H2 and H3 ≠ H2 can be set.

[0098] Similarly, taking the first light-emitting element 103a as a green light-emitting element G, the second light-emitting element 103b as a red light-emitting element R, and the third light-emitting element 103c as a blue light-emitting element B as an example, the luminous efficiency of the three light-emitting elements 103 is different from each other, and the difference in luminous efficiency between the red light-emitting element R and the green light-emitting element G is smaller than the difference in luminous efficiency between the green light-emitting element G and the blue light-emitting element B. The red light-emitting element R and the green light-emitting element G can correspond to the groove 110 of the same depth, that is, H1=H2, while the blue light-emitting element B has a groove 110 of different depths, that is, H3≠H2.

[0099] The difference in luminous efficiency between the two light-emitting elements 103 is the difference between the larger and smaller luminous efficiency, i.e., the difference in luminous efficiency is positive. If the luminous efficiency of the first light-emitting element 103a is greater than that of the second light-emitting element 103b, then the difference in luminous efficiency between the two is the luminous efficiency of the first light-emitting element 103a minus the luminous efficiency of the second light-emitting element 103b. If the luminous efficiency of the first light-emitting element 103a is less than that of the second light-emitting element 103b, then the difference in luminous efficiency between the two is the luminous efficiency of the second light-emitting element 103b minus the luminous efficiency of the first light-emitting element 103a.

[0100] In one embodiment, light-emitting elements 103 of different colors can have the same opening area. Since the opening area is the same, the metal electrode area of ​​the three light-emitting elements 103 in the pixel opening area is the same, and the reflectivity of the metal electrodes of the three in the pixel opening area to ambient light is the same. At this time, the difference in display brightness of the three light-emitting elements 103 mainly depends on their luminous efficiency. The luminous efficiency of the three light-emitting elements 103 is different from each other. The first light-emitting element 103a and the second light-emitting element 103b with smaller luminous efficiency difference are set to have grooves 110 of the same depth, so that H1=H2. The second light-emitting element 103b and the third light-emitting element 103c with larger luminous efficiency difference are set to have grooves 110 of different depths, so that H2≠H3. In this way, only two depths of grooves 110 are needed in the display panel, simplifying the design complexity of the groove depth in the first anti-reflection layer 105 and reducing the patterning process difficulty of the first anti-reflection layer 105.

[0101] refer to Figure 7 , Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of this application. Based on other embodiments, Figure 7 In the display panel shown, the multiple light-emitting elements 103 in the display array 102 include a first light-emitting element 103a, a second light-emitting element 103b, and a third light-emitting element 103c, each emitting a different color. The groove depth corresponding to the first light-emitting element 103a is H1, the groove depth corresponding to the second light-emitting element 103b is H2, and the groove depth corresponding to the third light-emitting element 103c is H3, where H1 ≠ H2 ≠ H3. For example, the first light-emitting element 103a is a green light-emitting element G, the second light-emitting element 103b is a red light-emitting element R, and the third light-emitting element 103c is a blue light-emitting element, and the groove depths corresponding to the three are different.

[0102] exist Figure 7 In the illustrated method, by differentiating the depth of the three light-emitting elements 103 corresponding to the groove 110, the first anti-reflection layer 105 above the three light-emitting elements 103 can be of different thicknesses to balance the display brightness of the three. In the case that the light emission brightness of the three light-emitting elements 103 is different, the three can have the same or approximately the same display brightness to improve the uniformity of the displayed image and solve the color shift problem.

[0103] Due to the performance differences of various organic light-emitting materials, the luminous efficiencies of the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c are generally not equal. When H1≠H2≠H3, the groove depth can be set to be negatively correlated with the luminous efficiency of the relative light-emitting element 103. That is, the light-emitting element 103 with high luminous efficiency corresponds to a shallower groove 110, and the light-emitting element 103 with low luminous efficiency corresponds to a deeper groove 110. This allows the thickness of the first anti-reflection layer 105 above the light-emitting element 103 to match the luminous brightness of the light-emitting element 103, reducing the difference in display brightness between different colored light-emitting elements 103. For example, if the first light-emitting element 103a has the highest luminous efficiency, the third light-emitting element 103c has the lowest luminous efficiency, and the second light-emitting element 103b has a moderate luminous efficiency, then... Figure 7 As shown, the first light-emitting element 103a corresponds to the groove 110 with the minimum depth, the third light-emitting element 103c corresponds to the groove 110 with the maximum depth, and the second light-emitting element 103b corresponds to the groove 110 with the middle depth, i.e., H3 > H2 > H1.

[0104] In the display panel, the opening areas of the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c can be the same. Specifically, the opening area of ​​the first light-emitting element 103a is set to S1, the opening area of ​​the second light-emitting element 103b is set to S2, and the opening area of ​​the third light-emitting element 103c is set to S3, where S3=S2=S1.

[0105] When S3=S2=S1, H1≠H2≠H3 can be set. In this case, since the opening areas of the three light-emitting elements 103 are the same, and the electrode areas in the pixel opening region are the same, the reflection intensity of ambient light is the same or approximately the same. Therefore, the main factor affecting image display quality is the difference in luminance between the different colored light-emitting elements 103. Thus, setting H1≠H2≠H3 allows the groove depth in the first anti-reflection layer 105 to match the display brightness of the light-emitting elements 103, thereby balancing the display brightness of the light-emitting elements 103 with different luminous colors. Specifically, H3 > H2 > H1 can be set, and the depth of the groove 110 is negatively correlated with the luminous efficiency of the light-emitting element 103. This allows the light-emitting element 103 with a larger luminous efficiency to correspond to the groove 110 with a smaller depth, so that the absorption of the light emitted by the light-emitting element 103 can be appropriately increased by the first anti-reflection layer 105 with a larger thickness. Conversely, the light-emitting element 103 with a smaller luminous efficiency to correspond to the groove 110 with a larger depth, so that the absorption of the light emitted by the light-emitting element 103 can be appropriately reduced by the first anti-reflection layer 105 with a smaller thickness. This balances the display brightness of the light-emitting elements 103 with different luminous efficiencies, improves the uniformity of image display, and solves the color shift problem of the displayed image.

[0106] exist Figure 7In the illustrated configuration, light-emitting elements 103 of different colors each have a separate groove depth. The first anti-reflection layer 105 can significantly improve the uniformity of display brightness of the three light-emitting elements 103 with different brightness levels, thereby achieving high-precision display brightness compensation through the first anti-reflection layer 105.

[0107] refer to Figure 8 , Figure 8 This is a schematic diagram illustrating the layout of light-emitting elements in a display panel according to an embodiment of this application. The first direction X and the second direction Y intersect and are both parallel to the display panel on a plane. In a top view facing this plane, the display array 102 includes a plurality of light-emitting elements 103 arranged in an array. Among the plurality of light-emitting elements 103, the opening areas of the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c are all the same. For example, the vertical projection of each light-emitting element 103 on this plane can be the same circle. In other embodiments, the vertical projection of each light-emitting element 103 on this plane can be the same rectangle or other polygonal structure.

[0108] In one implementation, based on other implementations, such as Figure 8 As shown, the opening areas of the three light-emitting elements 103 can all be the same, i.e., S3=S2=S1. In this method, the three light-emitting elements can use the same opening area, which facilitates the graphical design of the pixel definition layer. Alternatively, based on other embodiments, when the luminous efficiency of the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c decreases sequentially, their opening areas can also be different. The opening area is inversely proportional to the luminous efficiency. In this case, S3>S2>S1, and the display brightness of the light-emitting elements 103 with different luminous efficiencies is balanced by the difference in opening area.

[0109] Reference 9 and Figure 10 , Figure 9 This is a view showing another layout of light-emitting elements in a display panel provided in an embodiment of this application. Figure 10 for Figure 9 The diagram shows a cross-sectional view of the display panel along the A-A' direction. In this method, S3 > S2 > S1. The light-emitting area of ​​the light-emitting element 103 is inversely proportional to the luminous efficiency of the light-emitting element 103. The greater the luminous efficiency of the light-emitting element 103, the smaller the opening area of ​​the light-emitting element 103; the smaller the luminous efficiency of the light-emitting element 103, the larger the opening area of ​​the light-emitting element 103. By using the difference in the opening area of ​​the light-emitting element 103, the difference in luminous brightness caused by the luminous efficiency of the light-emitting elements 103 of different colors is compensated, so that light-emitting elements 103 with different luminous efficiencies have the same or approximately the same luminous brightness. Therefore, in this method, the three different colored light-emitting elements 103 can have the same or approximately the same luminous brightness.

[0110] exist Figure 9 In the illustrated configuration, since the opening areas of the three light-emitting elements 103 are different, in the pixel opening area, the larger the opening area of ​​the light-emitting element 103, the larger the area of ​​its metal electrode in the pixel opening area, resulting in stronger reflection of ambient light. This leads to uneven reflection of ambient light in different areas of the panel, affecting image display quality. At this point, compared to the interference of the brightness difference of the three light-emitting elements 103 on image display quality, the area difference of the pixel opening area has a more severe impact. Therefore, H1 > H2 > H3 is set, meaning the opening area of ​​the light-emitting element 103 is inversely proportional to the depth of the corresponding groove 110. This allows the light-emitting element 103 with a larger opening area to correspond to a groove 110 with a smaller depth, thereby increasing the absorption of ambient light through the thicker first anti-reflection layer 105. Conversely, the light-emitting element 103 with a smaller opening area to correspond to a groove with a larger depth, thereby reducing the absorption of ambient light through the thinner first anti-reflection layer 105. This balances the reflection of ambient light by the metal electrodes of the light-emitting elements 103 with different opening areas, resulting in more uniform reflection of ambient light in different areas of the panel.

[0111] In other embodiments, when the luminous efficiency of the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c decreases sequentially, and S3 > S2 > S1, H1 can also be set to H2 > H3. In this method, only two grooves 110 of different depths need to be formed on the first antireflection layer 105, which simplifies the fabrication process of the first antireflection layer 105 while balancing the reflection of ambient light by the metal electrodes of the light-emitting elements 103 with different opening areas.

[0112] refer to Figure 11 , Figure 11 This is a schematic diagram illustrating the layout of light-emitting elements and corresponding grooves in the first anti-reflection layer 105 of a display panel according to an embodiment of this application. In the direction perpendicular to the plane of the array substrate 101 (i.e., the thickness direction Z), the vertical projection patterns of the grooves 110 corresponding to light-emitting elements 103 of different colors are identical. In this configuration, all grooves 110 correspond to the same vertical projection pattern, facilitating the patterning of the grooves in the first anti-reflection layer 105 using the same vertical projection pattern, thus simplifying its fabrication process.

[0113] In a direction perpendicular to the plane of the array substrate 101, the edge of the groove 110 (the edge of the top opening of the groove 110) surrounds the corresponding light-emitting element 103. For example... Figure 11As shown, in the direction perpendicular to the plane where the array substrate 101 is located, the vertical projection of the edge of the light-emitting element 103 (the top opening edge of the pixel opening area) on this plane is circular, the vertical projection of the edge of the groove 110 on this plane is circular, and the circular vertical projection of the groove edge surrounds the circular vertical projection of the corresponding light-emitting element edge.

[0114] In other embodiments, in the direction perpendicular to the plane of the array substrate 101, the vertical projection of the edge of the light-emitting element 103 onto the plane is a rectangle, and the vertical projection of the edge of the groove 110 onto the plane is a rectangle; or, the vertical projection of the edge of the light-emitting element 103 onto the plane is a pentagon, and the vertical projection of the edge of each groove 110 onto the plane is a pentagon.

[0115] In the display panel, in the direction perpendicular to the plane where the array substrate 101 is located, the vertical projection of the edge of the light-emitting element 103 on the plane has the same pattern as the vertical projection of the edge of the groove 110 on the plane, and the edge of the groove 110 surrounds the corresponding light-emitting element 103. In this embodiment, the pattern structure of the vertical projection of the edge of the light-emitting element 103 on the plane and the vertical projection of the edge of the groove 110 on the plane is not limited.

[0116] refer to Figure 12 , Figure 12 This is a schematic diagram of the layout of the light-emitting elements and the corresponding grooves in the first anti-reflection layer in another display panel provided by the embodiments of this application. In the direction perpendicular to the plane where the array substrate 101 is located, the edge of the groove 110 surrounds the corresponding light-emitting element 103; in the direction parallel to the plane where the array substrate 101 is located (i.e., the XY plane), the distance between the edge of the light-emitting element 103 with different emitting colors and the edge of the corresponding groove 110 is different.

[0117] like Figure 12 As shown, in the direction parallel to the plane of the array substrate 101, the distance between the edge of the first light-emitting element 103a and the edge of the corresponding groove 110 is D1, the distance between the edge of the second light-emitting element 103b and the edge of the corresponding groove 110 is D2, and the distance between the edge of the third light-emitting element 103c and the edge of the corresponding groove 110 is D3, where D3≠D2≠D1.

[0118] As described above, the three light-emitting elements 103 with different luminous efficiencies have different luminous efficiencies. To balance the display brightness of the three, the aperture area of ​​each element is negatively correlated with its respective luminous efficiency. Furthermore, D3≠D2≠D1 can be set. By differentiating D1, D2, and D3, the difference in the reflection of ambient light by the metal electrodes in the pixel aperture area caused by the different aperture areas of the three elements can be reduced.

[0119] When the luminous efficiency of the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c decreases sequentially, in one embodiment, such as Figure 12 As shown, S3 > S2 > S1, to compensate for the difference in display brightness caused by the difference in luminous efficiency of the three light-emitting elements 103 through the difference in opening area, and to balance the display brightness of the three. Furthermore, setting D3 > D2 > D1 allows the light-emitting element 103 with a larger opening area to have a greater edge distance to the corresponding groove 110, increasing the area of ​​the groove 110 corresponding to the light-emitting element 103 to reduce the reflectivity to ambient light. Conversely, it allows the light-emitting element 103 with a smaller opening area to have a smaller edge distance to the corresponding groove 110, reducing the area of ​​the corresponding groove 110 to increase the reflectivity to ambient light. This reduces the difference in ambient light reflection between the metal electrodes of the light-emitting elements 103 with different opening areas in the pixel opening area.

[0120] refer to Figure 13 , Figure 13 This is a schematic diagram of another display panel structure provided in this application embodiment. Based on other embodiments, in this display panel, a first light-transmitting layer 112 is covered on the surface of the first antireflective layer 105 facing away from the array substrate 101. The refractive index of the first light-transmitting layer 112 is greater than that of the first antireflective layer 105. In this way, the high-refractive-index first light-transmitting layer 112 can fill the groove 110 of the first region 1051. At the location of the groove 110, the high-refractive-index first light-transmitting layer 112 can form a microlens (MLP) with the low-refractive-index first antireflective layer 105. The microlens can converge the emitted light from the opposite light-emitting element 103 below, thereby improving the display brightness of the display panel and reducing the power consumption of the panel.

[0121] In conventional display panels, microlenses and color resist layers require different film layers and processes to fabricate, resulting in a complex panel structure and manufacturing process. Figure 13 In the illustrated configuration, the first antireflective layer 105 combines the functions of reducing ambient light reflection as a conventional color resist with the function of focusing light as a conventional microlens, simplifying the panel structure and its fabrication process and reducing manufacturing costs.

[0122] In one implementation, such as Figure 13 As shown, the first light-transmitting layer 112 is the adhesive layer 106. In this method, the adhesive layer 106 can be reused as the first light-transmitting layer 112, eliminating the need to add a separate light-transmitting film layer, thus improving the panel integration and reducing the panel thickness.

[0123] In other methods, a high refractive index light-transmitting material can be added separately between the adhesive layer 106 and the first anti-reflection layer 105 as the first light-transmitting layer 112.

[0124] To enhance the light-gathering effect of the microlens formed by the first light-transmitting layer 112 and the first anti-reflective layer 105 at the groove 110, the width of the groove 110 increases along the direction from the array substrate 101 to the display array 102. In one embodiment, such as... Figure 13 As shown, the width of the groove 110 increases linearly and continuously along this direction.

[0125] refer to Figure 14 , Figure 14 A schematic diagram of a principle for constructing a microlens for the first light-transmitting layer and the first anti-reflection layer is shown. In this method, the groove 110 is a multi-level stepped groove with multiple levels of sub-grooves along the thickness direction Z. The width of the sub-grooves of the same level remains unchanged, while the widths of the sub-grooves of different levels are different, and the width of each level of sub-grooves increases along the thickness direction Z.

[0126] For example, such as Figure 14 As shown, the groove 110 may include two levels of sub-grooves. The width of the lower first level sub-grooves remains constant along the thickness direction Z, and the width of the upper second level sub-grooves remains constant along the thickness direction Z. The width of the second level sub-grooves is greater than the width of the first level sub-grooves.

[0127] In some embodiments of this application, such as Figures 3-7 , Figure 10 and Figure 13 As shown in the embodiments, the groove 110 is a single-level groove, and the width of the groove 110 remains constant along the thickness direction Z, or increases linearly continuously. In this case, the sidewall inclination angle of each groove 110 is the same, which facilitates the uniform fabrication of each groove 110 based on the same sidewall inclination angle, and simplifies the patterning process of the first antireflection layer 105.

[0128] refer to Figure 15 , Figure 15 This application provides an embodiment of another schematic diagram illustrating the principle of constructing a microlens using a first light-transmitting layer and a first anti-reflection layer 105 in a display panel. Based on other methods, Figure 15 In the display panel 100 shown, when the groove 110 is a single-level groove and the width of the groove 110 remains constant along the thickness direction Z, or increases linearly, the angle of the sidewall tilt of the groove 110 corresponding to different light emission colors is different.

[0129] like Figure 15 As shown, the sidewall inclination angles of the grooves corresponding to the first light-emitting element 103a, the second light-emitting element 103b, and the third light-emitting element 103c are E1, E2, and E3, respectively, where E1≠E2≠E3.

[0130] Using the brightness of vertically emitted light as a reference, the brightness attenuation of light-emitting elements 103 of different colors differs under the same non-perpendicular viewing angle, resulting in color shift issues on the display panel under non-perpendicular viewing angles. Figure 15In the illustrated method, by differentiating the side wall tilt angle of the groove 110 corresponding to the light-emitting elements 103 of different light-emitting colors, the color shift problem caused by the different brightness attenuation of the viewing angle of the light-emitting elements 103 of different light-emitting colors can be optimized.

[0131] In the display panel 100 provided in this application embodiment, the viewing angle brightness attenuation of light-emitting elements 103 of different emitting colors varies, and the angle of the sidewall tilt of the groove is positively correlated with the viewing angle brightness attenuation of the corresponding light-emitting element 103. For example, when the viewing angle brightness attenuation of the second light-emitting element 103b, the first light-emitting element 103a, and the third light-emitting element 103c decreases sequentially, E1 > E2 > E3 is set. In this way, for the light-emitting element 103 with a large viewing angle brightness attenuation, the incident angle of its large-viewing-angle emitted light at the tilt of the sidewall of the groove is reduced, which can reduce the total internal reflection of the large-viewing-angle emitted light at the sidewall of the groove, so as to balance the display brightness of the light-emitting element 103 with a small viewing angle brightness attenuation, and optimize the color shift problem caused by the different viewing angle brightness attenuation of light-emitting elements 103 of different emitting colors.

[0132] As described above, the multiple light-emitting elements 103 in the display array 102 include a red light-emitting element R, a green light-emitting element G, and a blue light-emitting element B. Taking a first light-emitting element 103a as a green light-emitting element G, a second light-emitting element 103b as a red light-emitting element R, and a third light-emitting element 103c as a blue light-emitting element B as an example, if the viewing angle brightness attenuation of the red light-emitting element R, the green light-emitting element G, and the blue light-emitting element B decreases sequentially, the sidewall tilt angles of the corresponding grooves of the red light-emitting element R, the green light-emitting element G, and the blue light-emitting element B also decrease sequentially, i.e., E1 > E2 > E3. Figure 15 Taking the large-angle emitted light as an example under the viewpoint indicated by the dashed arrow, if the three light-emitting elements 103 correspond to the same sidewall tilt angle, the red light-emitting element R has the largest spectral brightness attenuation, resulting in the lowest brightness at this large angle. In this embodiment, E1 > E2 > E3 is set, which reduces the incident angle of the light at this angle on the sidewall of the groove corresponding to the red light-emitting element R. This reduces the total internal reflection of red light on the corresponding groove sidewall, increases the brightness of the red light-emitting element R under this viewpoint, and thus allows the light-emitting elements 103 with different spectral brightness attenuations to have a more consistent display brightness under the same non-perpendicular viewpoint.

[0133] To facilitate the fabrication of the groove in the first antireflective layer 105, in other methods, the three light-emitting elements 103 of different light-emitting colors can correspond to the same sidewall tilt angle.

[0134] As described above, in this embodiment of the application, by differentiating at least one of the following factors—the thickness (i.e., groove depth) of the first antireflection layer 105 on light-emitting elements 103 of different emitting colors, the distance between the edge of the light-emitting element and the edge of the groove, and the inclination angle of the groove sidewall—the display brightness difference and / or reflection difference of light-emitting elements 103 of different emitting colors is optimized, and the display brightness and / or reflection of light-emitting elements 103 of different emitting colors are balanced. The panel structure is simple and does not require complex compensation circuits and compensation algorithms.

[0135] refer to Figure 16 , Figure 16 This is a schematic diagram of another display panel structure provided in an embodiment of this application, based on other methods. Figure 16 The display panel 100 shown further includes: a second antireflection layer 113 located on the side of the thin film encapsulation layer 104 opposite to the display array 102, the second antireflection layer 113 having a through opening corresponding to the light-emitting element 103, and a first antireflection layer 105 located at least within the through opening; wherein the light transmittance of the second antireflection layer 113 is less than the light transmittance of the first antireflection layer 105.

[0136] exist Figure 16 In the illustrated configuration, the transmittance of the second antireflection layer 113 is less than that of the first antireflection layer 105. The area where the second antireflection layer 113 is located can significantly reduce the reflection of ambient light by the display panel through its lower transmittance.

[0137] In the display panel 100, the second anti-reflection layer 113 has a portion in the thickness direction Z of the panel that does not overlap with the pixel opening. While absorbing ambient light through the second anti-reflection layer 113 to reduce the reflection of ambient light by the panel, it also reduces or even avoids the absorption of light emitted by the light-emitting element 103 by the second anti-reflection layer 113, so as to ensure display brightness and reduce display power consumption.

[0138] Optionally, the transmittance of the second antireflection layer 113 is not less than 50%, so that the absorbance of the second antireflection layer 113 exceeds the transmittance, thereby improving its absorption rate of ambient light.

[0139] In this embodiment, the transmittance of visible light in the second antireflection layer 113 does not exceed a second transmittance, and the second transmittance is less than a first transmittance. The absorption rate of the second antireflection layer 113 for different colors of visible light in the visible light band satisfies a uniformity condition, ensuring that the absorption rate of different colors of visible light in the second antireflection layer 113 does not exceed 10%. Therefore, the second antireflection layer 113 has uniform absorption performance across the entire visible light spectrum, and different colors of visible light have the same or approximately the same absorption rate in the second antireflection layer 113. The second antireflection layer 113 does not have monochromatic light absorption characteristics and has full-spectrum absorption characteristics in the visible light band.

[0140] As can be seen, the second antireflection layer 113 can extinct red, green, and blue light in ambient light to the same degree outside the pixel aperture area. Therefore, in this embodiment, the same second antireflection layer 113 can be used to absorb ambient light in all areas outside the pixel aperture area, and the second antireflection layer 113 with the required pattern structure can be formed by only one patterning process, simplifying the panel manufacturing process.

[0141] Optionally, the transmittance of the second antireflective layer 113 is 0 or approximately 0. The second antireflective layer 113 can be a black matrix layer. Alternatively, both the first antireflective layer 105 and the second antireflective layer 113 are organic light-transmitting layers mixed with light-absorbing materials, and the proportion of light-absorbing materials in the second antireflective layer 113 is greater than the proportion of light-absorbing materials in the first antireflective layer 105, so that the transmittance of the second antireflective layer 113 is less than the transmittance of the first antireflective layer 105.

[0142] In one embodiment, the first antireflective layer 105 and the second antireflective layer 113 have no overlap in the direction perpendicular to the plane of the array substrate 101. For example... Figure 16 As shown, the first antireflective layer 105 is located within the through-openings of the second antireflective layer 113 corresponding to each light-emitting element 103. The first antireflective layer 105 and the second antireflective layer 113 have no overlap in the panel thickness direction Z. This method allows for the first fabrication of a mesh-structured second antireflective layer 113, which has through-openings in the regions corresponding to each light-emitting element 103. Then, the first antireflective layer 105 is formed within these through-openings. The first antireflective layer 105 can be aligned by exposure using the edge of the through-opening or the alignment marks used to fabricate the second antireflective layer 113 as a reference, ensuring that the first antireflective layer 105 is accurately located within the through-opening and facilitating the fabrication of both antireflective layers.

[0143] In the direction perpendicular to the plane of the array substrate 101, when the first antireflective layer 105 and the second antireflective layer 113 have no overlapping portion, such as Figure 16 As shown, the first antireflective layer 105 and the second antireflective layer 113 can be set to have the same or approximately the same thickness, so that their upper surfaces can be coplanar or approximately coplanar, so as to provide a relatively flat plane for bonding and fixing the cover plate 107, thereby improving the reliability and stability of the bonding and fixing of the cover plate 107.

[0144] refer to Figure 17 , Figure 17 This is a schematic diagram of another display panel structure provided in an embodiment of this application, based on other methods. Figure 17In the display panel 100 shown, in a direction perpendicular to the plane of the array substrate 101, the first antireflection layer 105 and the second antireflection layer 113 have an overlapping portion. The first antireflection layer 105 extends beyond the through opening of the second antireflection layer 113 and covers the side surface of the second antireflection layer 113 facing away from the array substrate 101.

[0145] Figure 17 In the illustrated configuration, in areas other than the pixel opening area, the first antireflection layer 105 and the second antireflection layer 113 are stacked to form a stacked structure of a low-transmittance antireflection layer, which can absorb ambient light to a greater extent in non-pixel opening areas, thereby reducing the reflection of ambient light by the panel to a greater extent.

[0146] refer to Figure 18 , Figure 18 This is a schematic diagram of another display panel structure provided in an embodiment of this application, based on other methods. Figure 18 In the display panel 100 shown, a touch layer 109 is provided on the side of the thin film encapsulation layer 104 away from the array substrate 101. The touch layer 109 is located between the first anti-reflection layer 105 and the thin film encapsulation layer 1041.

[0147] like Figure 18 As shown, the touch layer 109 includes touch electrodes 114 and bridges 115 in different layers. An insulating layer is provided between the touch electrodes 114 and the bridges 115, and the bridges 115 are electrically connected to the touch electrodes 114 through conductive holes passing through the insulating layer.

[0148] exist Figure 18 In the illustrated method, touch electrodes are integrated between the film layers of the thin film encapsulation layer 104. The excellent physical encapsulation and chemical protection properties of the thin film encapsulation layer 104 can effectively isolate the touch electrodes from external moisture and oxygen corrosion, thereby improving the service life and reliability of the touch electrodes.

[0149] Based on the above embodiments, another embodiment of this application also provides an electronic device, which is as follows: Figure 19 As shown.

[0150] refer to Figure 19 , Figure 19 This is a schematic diagram of an electronic device provided in an embodiment of this application. The electronic device includes the display panel 100 provided in any of the above embodiments. The electronic device can be a mobile phone, tablet computer, laptop computer, wearable device, or other device with display function.

[0151] The electronic devices and display panel embodiments disclosed in the above embodiments have the same or corresponding beneficial effects, and will not be described again here to avoid repetition.

[0152] The various embodiments in this application are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. The embodiments provided in this application can be combined with each other without contradiction.

[0153] It should be noted that, in the description of this application, the accompanying drawings and embodiments are illustrative rather than restrictive. The same reference numerals throughout the embodiments identify the same structures. Additionally, for understanding and ease of description, the thicknesses of some layers, films, panels, regions, etc., may be exaggerated in the drawings. It is also understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element may be directly on the other element or there may be intermediate elements. Furthermore, "on" means positioning an element on or below another element, but does not inherently mean positioning it above another element according to the direction of gravity.

[0154] The terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the middle.

[0155] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0156] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that, include: Array substrate; A display array located on the array substrate, the display array comprising a plurality of light-emitting elements; A thin-film encapsulation layer located on the surface of the display array facing away from the array substrate; The first anti-reflective layer is located on the side of the thin-film encapsulation layer opposite to the display array; A cover plate located on the side of the first antireflection layer away from the array substrate, the surface of the cover plate facing the first antireflection layer having an adhesive layer; The first antireflective layer includes a plurality of first regions corresponding to the light-emitting element; the light transmittance of the first region is less than that of the adhesive layer.

2. The display panel according to claim 1, characterized in that, The first antireflective layer also includes a second region surrounding the first region; The transmittance of the second region is not greater than that of the first region.

3. The display panel according to claim 2, characterized in that, The thickness of the first region is the same as the thickness of the second region, and the light transmittance of the first region and the second region is the same.

4. The display panel according to claim 2, characterized in that, The first region has a groove, the depth of which is less than the thickness of the first antireflective layer.

5. The display panel according to claim 4, characterized in that, The grooves corresponding to the light-emitting elements of different colors have the same depth.

6. The display panel according to claim 4, characterized in that, The grooves corresponding to the light-emitting elements of the same color have the same depth.

7. The display panel according to claim 4, characterized in that, The grooves corresponding to at least two different light-emitting elements of different colors have different depths.

8. The display panel according to claim 7, characterized in that, The plurality of light-emitting elements include a first light-emitting element, a second light-emitting element, and a third light-emitting element that emit different colors. The groove depth corresponding to the first light-emitting element is H1, the groove depth corresponding to the second light-emitting element is H2, and the groove depth corresponding to the third light-emitting element is H3. The difference in opening area between the first light-emitting element and the second light-emitting element is less than the difference in opening area between the first light-emitting element and the third light-emitting element, H1 = H2, and H3 ≠ H2.

9. The display panel according to claim 7, characterized in that, The plurality of light-emitting elements include a first light-emitting element, a second light-emitting element, and a third light-emitting element that emit different colors. The groove depth corresponding to the first light-emitting element is H1, the groove depth corresponding to the second light-emitting element is H2, and the groove depth corresponding to the third light-emitting element is H3, wherein H1≠H2≠H3.

10. The display panel according to claim 9, characterized in that, In a direction perpendicular to the plane of the array substrate, the opening area of ​​the first light-emitting element is S1, the opening area of ​​the second light-emitting element is S2, and the opening area of ​​the third light-emitting element is S3. Among them, S3>S2>S1, H1>H2>H3.

11. The display panel according to claim 9, characterized in that, The luminous efficiency of the first light-emitting element, the second light-emitting element, and the third light-emitting element decreases sequentially; in the direction perpendicular to the plane of the array substrate, the opening area of ​​the first light-emitting element is S1, the opening area of ​​the second light-emitting element is S2, and the opening area of ​​the third light-emitting element is S3. Where S3=S2=S1, H3>H2>H1.

12. The display panel according to claim 4, characterized in that, In a direction perpendicular to the plane of the array substrate, the vertical projections of the light-emitting elements of different colors onto the grooves have the same pattern.

13. The display panel according to claim 4, characterized in that, In a direction perpendicular to the plane of the array substrate, the edge of the groove surrounds the corresponding light-emitting element; In a direction parallel to the plane of the array substrate, the distance between the edge of the light-emitting element with different emitting colors and the edge of the corresponding groove is different.

14. The display panel according to claim 13, characterized in that, The plurality of light-emitting elements includes a first light-emitting element, a second light-emitting element, and a third light-emitting element, each emitting a different color; In a direction perpendicular to the plane of the array substrate, the opening area of ​​the first light-emitting element is S1, the opening area of ​​the second light-emitting element is S2, and the opening area of ​​the third light-emitting element is S3, where S3 > S2 > S1. In a direction parallel to the plane of the array substrate, the distance between the edge of the first light-emitting element and the edge of the corresponding groove is D1, the distance between the edge of the second light-emitting element and the edge of the corresponding groove is D2, and the distance between the edge of the third light-emitting element and the edge of the corresponding groove is D3, where D3 > D2 > D1.

15. The display panel according to claim 4, characterized in that, The first antireflection layer has a first light-transmitting layer on the side of its surface facing away from the array substrate, and the refractive index of the first light-transmitting layer is greater than that of the first antireflection layer.

16. The display panel according to claim 15, characterized in that, The first light-transmitting layer is the adhesive layer.

17. The display panel according to claim 4, characterized in that, The sidewall inclination angles of each of the grooves are the same.

18. The display panel according to claim 4, characterized in that, The angle of the sidewall of the groove corresponds to different luminous colors.

19. The display panel according to claim 18, characterized in that, The degree of luminance decay of the light-emitting elements with different luminous colors is different, and the angle of the sidewall inclination of the groove is positively correlated with the degree of luminance decay of the corresponding light-emitting element.

20. The display panel according to claim 18, characterized in that, The plurality of light-emitting elements includes red light-emitting elements, green light-emitting elements, and blue light-emitting elements; The inclination angles of the sidewalls of the grooves corresponding to the red, green, and blue light-emitting elements decrease sequentially.

21. The display panel according to claim 1, characterized in that, Also includes: A second antireflective layer is located on the side of the thin-film encapsulation layer opposite to the display array. The second antireflective layer has a through-hole corresponding to the light-emitting element. The first antireflective layer is located at least within the through-hole. The transmittance of the second antireflective layer is less than that of the first antireflective layer.

22. The display panel according to claim 21, characterized in that, In a direction perpendicular to the plane of the array substrate, the first antireflection layer and the second antireflection layer have no overlapping portion.

23. The display panel according to claim 21, characterized in that, In a direction perpendicular to the plane of the array substrate, the first antireflection layer and the second antireflection layer have an overlapping portion.

24. The display panel according to claim 1, characterized in that, A touch layer is also provided on the side of the thin film encapsulation layer away from the array substrate, and the touch layer is located between the first anti-reflection layer and the thin film encapsulation layer.

25. An electronic device, characterized in that, Includes the display panel as described in any one of claims 1-24.

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