A display panel and display device

Abstract

This invention provides a display panel and a display device. The display panel includes: a substrate and a pixel definition layer located on one side of the substrate, the pixel definition layer including a plurality of pixel openings arranged in an array, the projection of the pixel openings on the substrate including a first side. A first dimming layer is located on the side of the pixel definition layer away from the substrate, the first dimming layer including a plurality of dimming openings, the dimming openings corresponding to the pixel openings. The projection of the dimming openings on the substrate includes a main body portion and at least one first protrusion connected to the main body portion, in the projection plane, the first protrusion is at least partially located on the side of the first side away from the center of the dimming opening. During the fabrication of the display panel, the alignment deviation between the mask and the substrate is partially offset by the first protrusion, ultimately enabling the dimming openings of the first dimming layer to reduce the impact of process fluctuations on light efficiency after alignment deviation occurs.

Description

[0001] This application is a divisional application of the patent filed on December 31, 2021, with application number 202111678514.9 and invention title: A display panel and display device. Technical Field

[0002] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0003] Organic light-emitting display devices use organic light-emitting diodes (OLEDs) as the light-emitting elements. These diodes are self-emissive, eliminating the need for an external light source, which facilitates the thinning and lightening of the overall display device and enables the fabrication of flexible displays. Furthermore, organic self-emissive display technology offers advantages such as fast response time and wide viewing angles, making it a current research focus.

[0004] In current display panels, as panel integration increases, the number of film layers above the light-emitting material layer gradually increases. This increase in film layers leads to increased light loss between layers and reduced light extraction efficiency. Therefore, there is an urgent need for an organic light-emitting display device that can improve light extraction efficiency. Summary of the Invention

[0005] This invention provides a display panel and a display device to solve the problem of light emission efficiency in the prior art and improve the quality of the display panel.

[0006] This invention provides a display panel, comprising: a substrate;

[0007] A pixel definition layer is located on one side of the substrate. The pixel definition layer includes a plurality of pixel openings arranged in an array. The projection of the pixel openings onto the substrate includes a first side.

[0008] Multiple light-emitting units, wherein the light-emitting units correspond to the pixel opening and are located within the pixel opening.

[0009] A first dimming layer is located on the side of the pixel definition layer away from the substrate. The first dimming includes a plurality of dimming openings, and the dimming openings correspond to the pixel openings.

[0010] A second dimming layer is located on the side of the first dimming layer away from the substrate and fills the dimming opening, wherein the refractive index of the second dimming layer is greater than the refractive index of the first dimming layer.

[0011] The projection of the dimming opening onto the substrate includes a main body and at least one first protrusion connected to the main body. In the projection plane, the first protrusion is at least partially located on the side of the first side away from the center of the dimming opening.

[0012] In some embodiments, the display panel further includes a color filter layer located on the side of the light-emitting element away from the substrate; the color filter layer includes a plurality of light-filtering units and a light-shielding portion, the light-shielding portion defining a plurality of first openings, the projection of the light-filtering units onto the plane of the light-shielding portion covering the first openings; along the light-emitting direction of the display panel, the first openings overlap with the light-emitting element, and the projection of the metal portion onto the color filter layer covers the first openings.

[0013] The present invention also provides a display device, including a display panel provided in any embodiment of the present invention.

[0014] The display panel and display device provided by the present invention have the following beneficial effects:

[0015] The dimming opening in the display panel has a main body and at least one first protrusion connected to the main body. Therefore, during the manufacturing process of the display panel, the alignment deviation between the mask and the substrate is partially offset by the first protrusion. Ultimately, after the dimming opening of the first dimming layer has an alignment deviation, it can reduce the impact of process fluctuations on light efficiency, thereby improving the optical difference of viewing angle in different directions of the display panel, improving the light emission effect of the display panel, and ensuring the display effect of the display panel. Attached Figure Description

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

[0017] Figure 1 This is a partial top view of a display panel 000 in the related art;

[0018] Figure 2 for Figure 1 Schematic diagram of section II;

[0019] Figure 3 This diagram illustrates the relationship between the preset distance S (ΔCD) between the edge of the dimming aperture and the pixel aperture and the improvement in light extraction efficiency.

[0020] Figure 4 This is a partial schematic diagram of a display panel with alignment deviation in a related art.

[0021] Figure 5 A partial top view of a display panel provided in an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A schematic diagram of the cross-section at section II-II;

[0023] Figure 7 A cross-sectional schematic diagram of a display panel provided in an embodiment of the present invention;

[0024] Figure 8 A top view of a first dimming layer provided in an embodiment of the present invention;

[0025] Figure 9 A partial top view of a display panel provided in an embodiment of the present invention;

[0026] Figure 10 A partial top view of a display panel provided in an embodiment of the present invention;

[0027] Figure 11 A partial top view of a display panel provided in an embodiment of the present invention;

[0028] Figure 12 A partial top view of a display panel provided in an embodiment of the present invention;

[0029] Figure 13 A partial top view of a display panel provided in an embodiment of the present invention;

[0030] Figure 14 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0033] Figure 1 This is a partial top view of a display panel 000 in the related art. Figure 2 for Figure 1 A schematic diagram of section II. (See attached diagram.) Figure 1-2 As shown, the display panel 000 includes a substrate 1' and a pixel definition layer 2' stacked together. The pixel definition layer 2' is located on one side of the substrate 1' and includes a plurality of pixel openings 21' arranged in an array. The array arrangement can be understood as the pixel openings being arranged repeatedly according to a certain rule (minimum repeating unit), and is not limited to a matrix form.

[0034] Multiple light-emitting units 3' correspond to and are located within the pixel opening 21'. Each light-emitting unit 3' can be a light-emitting unit capable of emitting different colors of light. For example, it can be a red light-emitting unit capable of emitting red light, a green light-emitting unit capable of emitting green light, and a blue light-emitting unit capable of emitting blue light. For example, as shown... Figure 2 As shown, in this embodiment of the application, an organic light-emitting diode (OLED) can be selected to fabricate the above-mentioned light-emitting units 3'. Alternatively, the light-emitting unit 3' can be set as a micro light-emitting diode (Micro-LED) or a quantum light-emitting diode (QLED).

[0035] The display panel 000 also includes a first dimming layer 4', which is located on the side of the pixel definition layer 2' away from the substrate 1'. The first dimming layer 4' includes a plurality of dimming openings 41', such as... Figure 1 As shown, the dimming opening 41' corresponds to the pixel opening 21'. Furthermore, there is a preset interval S between the edges of the dimming opening 41' and the pixel opening 21'.

[0036] Figure 3 This diagram illustrates the relationship between the preset distance S (ΔCD) between the edges of the dimming aperture 41' and the pixel aperture 21' and the improvement in light extraction efficiency. It can be seen that the light extraction efficiency is most ideal when S is within the range [P, Q], but drops significantly once it exceeds this range.

[0037] The display panel 000 also includes a second dimming layer 5', which is located on the side of the first dimming layer 4' away from the substrate 1' and completely fills the dimming opening 41'. The refractive index n1 of the first dimming layer 4' is less than the refractive index n2 of the second dimming layer 5', so that the large-angle light emitted by the light-emitting unit 3' is refracted or reflected by the first dimming layer 4' and then continues to be emitted at a small angle through the second dimming layer 5', thereby improving the light efficiency of the front of the display panel.

[0038] However, due to misalignment of the mask and randomness in the manufacturing process of the display panel, misalignment may occur between the dimming opening 41” and the pixel opening 21” on the final display panel. Figure 4 As shown, Figure 4 This is a partial schematic diagram of a display panel in related technology after experiencing alignment deviation. This causes a change in the preset interval S, resulting in at least two non-preset values ​​S1 and S2, such as... Figure 3 As shown, the preset interval S between the edges of the dimming opening 41' and the pixel opening 21' is generally set to the value with the highest light extraction efficiency. The appearance of a non-preset value will cause the light effect to deviate from the expectation, or even decrease.

[0039] Figure 5 This is a partial top view of a display panel provided in an embodiment of the present invention. Figure 6 for Figure 5 A schematic diagram of the cross-section at section II-II. To ensure that the light extraction efficiency of the dimming layer is not affected by errors in the fabrication process, such as... Figure 5-6 As shown, the present invention provides a display panel 100, including a substrate 1 stacked thereon and a pixel definition layer 2. The pixel definition layer 2 is located on one side of the substrate 1 and includes a plurality of pixel openings 21 arranged in an array. The array arrangement can be understood as the pixel openings being arranged repeatedly according to a certain rule (minimum repeating unit), and is not limited to a matrix form. A plurality of light-emitting units 3 correspond to the pixel openings 21 and are located within the pixel openings 21. The light-emitting units 3 can be light-emitting units capable of emitting light of different colors.

[0040] The display panel 100 also includes a first dimming layer 4, which is located on the side of the pixel definition layer 2 away from the substrate 1. The first dimming layer 4 includes a plurality of dimming openings 41, which correspond to the pixel openings 21.

[0041] Generally, the dimming opening 41 overlaps at least partially with the light-emitting unit 3 along the light-emitting direction. In this case, the first dimming layer 4 is generally a low-refractive-index film. When the first dimming layer 4 is a high-refractive-index film, the dimming opening 41 can also be located above the pixel definition layer 2, such as... Figure 7 As shown, Figure 7 This is a cross-sectional schematic diagram of a display panel provided in an embodiment of the present invention. It is understood that... Figure 6 and Figure 7 This is an equivalent structure; for simplicity, subsequent embodiments will only be described based on one of the cases. The refractive index of the low-refractive-index film can range from 1.3 to 1.6, and the refractive index of the high-refractive-index film can range from 1.6 to 1.8. Those skilled in the art can achieve different dimming effects of the first dimming layer 4 on the light-emitting unit 3 by selecting low-refractive-index and high-refractive-index film layers with different refractive indices.

[0042] The display panel 100 also includes a second dimming layer 5, which is located on the side of the first dimming layer 4 away from the substrate 1 and completely fills the dimming opening 41. The refractive index n1 of the first dimming layer 4 is less than the refractive index n2 of the second dimming layer 5, so that the large-angle light emitted by the light-emitting unit 3 can continue to be emitted at a small angle through the second dimming layer 5 after being refracted or reflected by the first dimming layer 4, thereby improving the light efficiency of the front of the display panel.

[0043] Figure 8 This is a top view of a first dimming layer provided in an embodiment of the present invention. Figure 8 As shown, in one embodiment of the present invention, the projection of the dimming opening 41 onto the substrate 1 includes a main body portion 411 (dashed frame portion) and at least one first protrusion 412 connected to the main body portion 411.

[0044] like Figure 5 As shown, the projection of the pixel opening 21 onto the substrate 1 includes a first side E1. In the projection plane, the first protrusion 412 is at least partially located on the side of the first side E1 away from the center C of the dimming opening 41. The center C of the dimming opening 41 can be the geometric center of the main body 411.

[0045] By providing a main body 411 and at least one first protrusion 412 connected to the main body 411 in the dimming opening 41 of the display panel, during the fabrication of the display panel, the alignment deviation between the mask and the substrate is partially offset by the first protrusion 412. Figure 5As shown, even if the dimming opening 41 of the first dimming layer 4 has a misalignment, the presence of the first protrusion 412 can ensure the light effect enhancement on at least part of the first side E1 (thickened part), thereby reducing the impact of process fluctuations on the light effect of the display panel, improving the light emission effect of the display panel, and ensuring the display effect of the display panel.

[0046] In one embodiment of the present invention, the projections of the main body portion 411 and its corresponding pixel opening onto the substrate are similar patterns. The specific shape of the main body portion is not limited here. Figure 8 In this configuration, if the main body 411 is rectangular, then its corresponding pixel opening should also be rectangular to achieve a better light extraction effect. If the pixel opening has other shapes, the corresponding main body can be adjusted to a similar shape to the pixel opening as needed.

[0047] In one embodiment of the present invention, the area of ​​the main body 411 is greater than or equal to the projected area of ​​the pixel opening on the substrate. Due to the presence of the first protrusion 412, when the area of ​​the main body 411 is equal to the projected area of ​​the pixel opening on the substrate, the redundancy along the offset direction can be reduced when the dimming opening is offset, effectively controlling the brightness difference of the pixel in different positions after offset. However, the actual situation is often not so ideal. Therefore, in order to ensure the coverage of the dimming opening as much as possible, the area of ​​the main body 411 is usually set to be slightly larger than the projected area of ​​the pixel opening on the substrate.

[0048] In one embodiment of the present invention, such as Figure 8 As shown, the length l1 of the first protrusion 412 along the first direction X is less than the length L of the main body 411 along the first direction X, where the first direction X is the extension direction of the first side E1. To ensure the compensation effect of the first protrusion 412, l1 ≥ L / 2 can be set.

[0049] In one embodiment of the present invention, such as Figure 8 As shown, within the projection plane, the first protrusion 412 includes a first edge 4121 parallel to the first side E1, and the minimum distance h1 between the first edge 4121 and the main body 411 satisfies 0 ≤ h1 ≤ 1.5 μm. Considering the actual process error range and to balance the compensation effect of the first protrusion 412, the minimum distance h1 between the first edge 4121 and the main body 411 can satisfy 0.5 μm ≤ h1 ≤ 1.5 μm. If h1 is too small, the first protrusion 412 may not achieve the compensation effect, while if h1 is too large, the appearance of the first protrusion 412 may actually lead to a deterioration in the light extraction efficiency of the pixel.

[0050] In one embodiment of the present invention, such as Figure 8 As shown, within the projection plane, the first protrusion 412 includes a second edge 4122 perpendicular to the first side E1. In actual manufacturing, considering process variations, angular fluctuations within ±5° can be considered as falling within the range of vertical or approximately vertical.

[0051] However, due to limitations in existing manufacturing processes, the second edge 4122 of the first protrusion 412 often cannot be completely perpendicular to the first side E1, or approximately perpendicular to the first side E1. Therefore, in one embodiment of the present invention, such as... Figure 9 As shown, Figure 9 This is a partial top view of a display panel provided in an embodiment of the present invention. In the projection plane, the first protrusion 412 includes a second edge 4122 intersecting the first side edge E1, wherein at least one of the second edge 4122 forms an angle θ with the first side edge E1 of less than 90°. Figure 9 As shown, since the angle θ between at least one of the second edges 4122 and the first side E1 is less than 90°, the first protrusion 412 has a gradual adjustment effect, which is beneficial to improving the brightness uniformity of each angle.

[0052] In one embodiment of the present invention, such as Figure 10 As shown, Figure 10 This is a partial top view of a display panel provided in an embodiment of the present invention. The light-emitting unit 3 includes a plurality of first light-emitting units 31 arranged in an array, and the first light-emitting units 31 emit light of the same color. Along the first direction X, two adjacent first light-emitting units 31 are symmetrical with respect to the first axis of symmetry A. Due to the misalignment of the dimming opening 41, the main body portion 411 of the dimming opening 41 corresponding to the two adjacent first light-emitting units 31 is misaligned, and the main body portion 411 is asymmetrical with respect to the first axis of symmetry A. At this time, the relative positions of the first protrusion 412 in the two adjacent first light-emitting units 31 and the main body portion 411 are not the same.

[0053] Furthermore, along the first direction X, if the main body portion 411 corresponding to two adjacent first light-emitting units 31 is symmetrical with respect to the second axis of symmetry A', then the first protrusion portion 412 corresponding to two adjacent first light-emitting units 31 is also symmetrical with respect to the second axis of symmetry A' (this embodiment is not shown in the figure).

[0054] Since the dimming openings 41 on the entire display panel 100 have the same offset direction, when the first protrusion 412 is in the same position, the position for improving light effect (the relative position of the first protrusion 412 and the corresponding pixel opening 21) is different, resulting in different light output brightness of a single pixel. For RGB panels, the shape and size of sub-pixels of different colors are often different. Therefore, the same offset may lead to more obvious brightness differences between light-emitting units of different colors, resulting in color shift. Therefore, the relative positions of the first protrusion 412 and the main body 411 in two adjacent first light-emitting units 31 are different. This enables the brightness adaptation of light-emitting units of the same color when the offset direction is uncontrollable, thereby reducing the brightness difference between light-emitting units of different colors, balancing the overall compensation effect of the display panel, and avoiding color shift caused by the randomness of the offset direction.

[0055] In one embodiment of the present invention, such as Figure 11 As shown, Figure 11 This is a partial top view of a display panel provided in an embodiment of the present invention. The projection of the pixel opening 21 onto the substrate includes a second side edge E2, which extends along a first direction X; as shown... Figure 11 As shown in pixel opening 21, the second side E2 can be parallel to or extend in the same direction as the first side E1. Considering process variations, angular fluctuations within ±5° can be considered as extending in the same direction. The projection of the dimming opening 41 onto the substrate also includes at least one second protrusion 413. In the projection plane, the second protrusion 413 is located on the side of the second side E2 away from the center C of the dimming opening 41. The center C of the dimming opening 41 can be the geometric center of the main body 411.

[0056] In the process of manufacturing a display panel, the factors causing the alignment deviation between the mask and the substrate are quite complex. Under different conditions, the direction of the alignment deviation may be different. If only one protrusion is provided on one side, the presence of the protrusion will not effectively improve the light efficiency when the offset direction is completely opposite to the expected direction. Therefore, the inventors considered providing a second protrusion 413 on the opposite side of the first protrusion to accommodate more offset directions. Due to the presence of the second protrusion 413, the light efficiency improvement effect on at least part of the second side E2 (thickened part) can be guaranteed, thereby reducing the impact of process fluctuations on the light efficiency of the display panel, improving the light emission effect of the display panel, and ensuring the display effect of the display panel.

[0057] In one embodiment of the present invention, such as Figure 8As shown, the length l2 of the second protrusion 413 along the first direction X is less than the length L of the main body 411 along the first direction X, where the first direction X is the extension direction of the first side E1 and the second side E2. To ensure the compensation effect of the second protrusion 413, l2 ≥ L / 2 can be set.

[0058] In one embodiment of the present invention, such as Figure 8 As shown, within the projection plane, the second protrusion 413 includes a third edge 4131 parallel to the second side E2. The minimum distance h2 between the third edge 4131 and the main body 411 satisfies 0 ≤ h2 ≤ 1.5 μm. Considering the actual process error range and to balance the compensation effect of the second protrusion 413, the minimum distance h2 between the third edge 4131 and the main body 411 satisfies 0.5 μm ≤ h2 ≤ 1.5 μm. If h2 is too small, the second protrusion 413 may not achieve the compensation effect; if h2 is too large, the appearance of the second protrusion 413 may actually lead to a deterioration in the light extraction efficiency of the pixel.

[0059] Similar to the arrangement of the first protrusion 412, the second protrusion 413 includes a fourth edge 4132 perpendicular to the second side E2 within the projection plane. In actual manufacturing, considering process variations, angular fluctuations within ±5° can be considered as falling within the range of vertical or approximately vertical.

[0060] Due to limitations in existing manufacturing processes, the fourth edge 4132 of the second protrusion 413 often cannot be completely perpendicular to the second side E2, or approximately perpendicular to the second side E2. Therefore, in one embodiment of the present invention, in the projection plane, the second protrusion 413 includes a fourth edge 4132 that intersects with the second side E2, wherein at least one of the fourth edges 4132 has an angle of less than 90° with the second side E2.

[0061] In one embodiment of the present invention, such as Figure 8 As shown, the second protrusion 413 and the first protrusion 412 are centrally symmetrical with respect to the center C of the main body 411. This centrally symmetrical design prevents the first protrusion 412 and the second protrusion 413 from being on the same side and affecting light extraction efficiency when there is a misalignment between the mask and the substrate perpendicular to the first direction X.

[0062] In one embodiment of the present invention, such as Figure 10 As shown, Figure 10This is a partial top view of a display panel provided in an embodiment of the present invention. The light-emitting unit 3 includes a plurality of first light-emitting units 31 arranged in an array, the first light-emitting units 31 emitting light of the same color; along the second direction Y, the main body portions 411 corresponding to two adjacent first light-emitting units 31 are symmetrical with respect to the third axis of symmetry B, and the first protrusion 412 corresponding to one first light-emitting unit 31 and the second protrusion 413 corresponding to the other first light-emitting unit 31 are symmetrical with respect to the third axis of symmetry B; the second direction Y is perpendicular to the first direction X.

[0063] Since the offset direction of the dimming openings 41 on the entire display panel 100 is the same, when the first protrusion 412 and the second protrusion 413 are in the same position, the position for improving the light effect (the relative position of the first protrusion 412, the second protrusion 413 and the corresponding pixel opening) is different, resulting in different light output brightness of a single pixel. For RGB panels, the shape and size of sub-pixels of different colors are often different. Therefore, the same offset may cause a more obvious difference in brightness between light-emitting units of different colors, resulting in color shift. Therefore, the relative position of the first protrusion 412 in two adjacent first light-emitting units 31 and the main body 411 is different. The first protrusion 412 corresponding to one first light-emitting unit 31 and the second protrusion 413 corresponding to the other first light-emitting unit 31 are symmetrical with respect to the third axis of symmetry B. This enables the brightness adaptation of light-emitting units of the same color when the offset direction is uncontrollable, thereby reducing the brightness difference between light-emitting units of different colors, balancing the overall compensation effect of the display panel, and avoiding color shift caused by the randomness of the offset direction.

[0064] In one embodiment of the present invention, such as Figure 12 As shown, Figure 12 This is a partial top view of a display panel provided in an embodiment of the present invention. The projection of the pixel opening 21 onto the substrate includes a third side edge E3, which extends along a third direction Z, wherein the third direction Z intersects with the first direction X; as shown Figure 12 As shown, when the pixel opening 21 is rectangular, the third direction Z is the same as the second direction Y. When the pixel opening 21 is hexagonal or other shapes, the third direction Z can also be adaptively changed.

[0065] The projection of the dimming opening 41 onto the substrate also includes at least one third protrusion 414, which is located at least partially on the third side E3 away from the center C of the dimming opening 41 in the projection plane.

[0066] In the process of manufacturing a display panel, the factors causing the alignment deviation between the mask and the substrate are quite complex. Under different conditions, the direction of the alignment deviation may be different. If only one protrusion is provided on one side, the presence of the protrusion will not effectively improve the light efficiency when the offset direction completely intersects with the expected direction. Therefore, the inventors considered providing a third protrusion 414 on the other side adjacent to the first protrusion to accommodate more offset directions. Due to the presence of the third protrusion 414, the light efficiency improvement effect on at least part of the third side E3 (thickened part) can be guaranteed, thereby reducing the impact of process fluctuations on the light efficiency of the display panel, improving the light emission effect of the display panel, and ensuring the display effect of the display panel.

[0067] Similarly, such as Figure 12 As shown, protrusions can also be provided on other sides of the pixel opening 21. No matter which direction the final alignment deviation between the mask and the substrate shifts, at least some of the sides can always be guaranteed to have a portion with improved light efficiency (thickened portion), making the solution have better process tolerance.

[0068] In one embodiment of the present invention, such as Figure 13 As shown, Figure 13 This is a partial top view of a display panel provided in an embodiment of the present invention. The projection of the pixel opening 21 onto the substrate includes n sides, and the projection of the dimming opening 41 onto the substrate also includes n sides. If n is an odd number, then each side of the dimming opening 41 has a protrusion 415 in the projection plane. If n is an even number, then at least one of two adjacent sides of the dimming opening 41 has a protrusion 415 in the projection plane. In this embodiment, the protrusion 415 can satisfy any of the features of the first protrusion 412, the second protrusion 413, and / or the third protrusion 414 in the aforementioned embodiments. Further details are omitted here.

[0069] This invention also provides a display device. Figure 14 This is a schematic diagram of a display device provided in an embodiment of the present invention. As shown in the figure, the display device includes a display panel 100 provided in any embodiment of the present invention. The structure of the display panel 100 has been described in the above-described display panel embodiments and will not be repeated here. In the embodiments of the present invention, the display device can be any device with display function, such as a mobile phone, tablet computer, laptop computer, e-reader, television set, smart wearable product, etc.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that, include: Substrate; A pixel definition layer located on one side of the substrate includes a pixel defining portion and a pixel opening located between the pixel defining portions. The projection of the pixel opening onto the substrate includes a first side edge, which extends along a first direction. Multiple light-emitting units located at the pixel opening; A first dimming layer is located on the side of the pixel definition layer away from the substrate. The first dimming layer includes a plurality of dimming openings. The center of the dimming opening does not coincide with the center of the pixel opening. The projection of the dimming opening on the substrate includes a first dimming side. The second dimming layer is located on the surface of the first dimming layer away from the substrate; In the second direction, the distance from the first side to the first dimming side includes a first distance D1 and a second distance D2, and the second direction is perpendicular to the first direction; wherein, |D1-D2|>0.

2. The display panel according to claim 1, characterized in that, The dimming opening corresponds to the pixel opening, and the refractive index of the second dimming layer is greater than the refractive index of the first dimming layer; or... The dimming opening corresponds to the pixel defining portion, and the refractive index of the second dimming layer is less than the refractive index of the first dimming layer.

3. The display panel according to claim 2, characterized in that, The refractive index of the first dimming layer ranges from 1.3 to 1.6, and the refractive index of the second dimming layer ranges from 1.6 to 1.

8.

4. The display panel according to claim 1, characterized in that, The first dimming side is located on the side of the first side that is away from the center of the dimming opening.

5. The display panel according to claim 1, characterized in that, The projection of the dimming opening onto the substrate includes a main body and a first protrusion connected to the main body, wherein the first protrusion is at least partially located on the side of the first side away from the center of the dimming opening; The first dimming side includes the first protruding side of the first protrusion and a portion of the main body side; Along the second direction, the distance from the side of the first protrusion to the first side is the first distance D1, and the distance from the side of the main body to the first side is the second distance D2; wherein, D1 > D2.

6. The display panel according to claim 5, characterized in that, Along the first direction, the length l1 of the side of the first protrusion is less than the length L of the main body, and / or the length l1 of the side of the first protrusion is greater than or equal to half the length L of the main body.

7. The display panel according to claim 5, characterized in that, The first protrusion side is parallel to the first side, and the distance h1 between the first protrusion side and the main body side satisfies 0 < h1 ≤ 1.5 μm.

8. The display panel according to claim 5, characterized in that, The light-emitting unit includes a plurality of first light-emitting units; Along the first direction, the relative positions of the first protrusions in two adjacent first light-emitting units and the main body are not the same.

9. The display panel according to claim 5, characterized in that, The light-emitting unit includes a plurality of first light-emitting units; Along the first direction, if the main body portions corresponding to two adjacent first light-emitting units are symmetrical with respect to the second axis of symmetry, then the first protrusion portions corresponding to two adjacent first light-emitting units are also symmetrical with respect to the second axis of symmetry.

10. The display panel according to claim 5, characterized in that, The projections of the main body and the pixel opening onto the substrate are similar patterns.

11. The display panel according to claim 5, characterized in that, The area of ​​the main body is greater than or equal to the projected area of ​​the pixel opening on the substrate.

12. The display panel according to claim 5, characterized in that, The projection of the pixel opening onto the substrate further includes a second side, which extends along the first direction; The projection of the dimming opening onto the substrate also includes a second protrusion, which is located on the side of the second side away from the center of the dimming opening in the projection plane.

13. The display panel according to claim 12, characterized in that, The second protrusion and the first protrusion are arranged symmetrically with respect to the center of the main body.

14. The display panel according to claim 12, characterized in that, The light-emitting unit includes a plurality of first light-emitting units; Along the second direction, the main body portions corresponding to two adjacent first light-emitting units are symmetrical with respect to the third axis of symmetry, and the first protrusion corresponding to one of the first light-emitting units and the second protrusion corresponding to the other first light-emitting unit are symmetrical with respect to the third axis of symmetry.

15. The display panel according to claim 5, characterized in that, The projection of the pixel opening onto the substrate includes n sides, and the projection of the dimming opening onto the substrate includes n sides, where n is an odd number; in a plane parallel to the substrate, each side of the dimming opening is provided with the first protrusion.

16. The display panel according to claim 5, characterized in that, The projection of the pixel opening onto the substrate includes n sides, and the projection of the dimming opening onto the substrate includes n sides, where n is an even number; in a plane parallel to the substrate, at least one of two adjacent sides of the dimming opening is provided with the first protrusion.

17. A display device, characterized in that, Includes the display panel as described in any one of claims 1-16.

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