Display panel and display device

Abstract

The present application provides a display panel and a display device. The display panel is provided with a first sublayer and a second sublayer, so that the first sublayer has a first opening and a second opening, the first opening is located in the first display area, and the second opening is located in the second display area. The second sublayer is provided on the side of the first sublayer away from the substrate, the second sublayer extends into the first opening, and the second sublayer has a third opening in the first opening. Light-emitting units of the same light-emitting color are provided in the third opening and the second opening, and the circumscribed circle diameter of the third opening is equal to the circumscribed circle diameter of the second opening, so that the pixel definition layer opening size of the display panel in the first display area and the second display area remains consistent, thereby achieving brightness uniformity of the entire display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In existing organic light-emitting diode (OLED) display devices, polarizers are typically installed on the OLED display device to reduce the impact of external reflected light on the display effect. However, due to the large thickness of the polarizer, not only does it partially absorb the emitted light, but it also significantly reduces light efficiency and increases power consumption. Currently, to address the problems of OLED displays using polarizers, a polarizer-less panel (PLP) technology has been proposed. By replacing traditional polarizers with black matrix and color resist, it can effectively reduce external reflected light while increasing the light transmittance of the OLED display device, thereby improving light efficiency and reducing power consumption.

[0003] In depolarizer OLED display devices, since the metal layer inside the OLED display device will produce specular reflection of external light, a black pixel definition layer made of black material is usually added between the ordinary pixel definition layer and the metal layer to absorb excess reflected light; however, in the actual production process, the opening size of the pixel definition layer in the edge area of ​​the display is often too large, resulting in excessive edge brightness and a "circular pink" phenomenon, which affects the uniformity and color accuracy of the display effect and reduces the overall display quality. Summary of the Invention

[0004] Embodiments of the present application provide a display panel and a display device to alleviate the deficiencies in the related art.

[0005] To achieve the above functions, the technical solutions provided in the embodiments of the present application are as follows:

[0006] An embodiment of the present application provides a display panel, comprising a first display area and a second display area located at least on one side of the first display area. The display panel comprises a substrate and a pixel definition layer provided on one side of the substrate. The pixel definition layer comprises:

[0007] The first sublayer is provided with a first opening and a second opening, wherein the first opening is located in the first display area, and the second opening is located in the second display area;

[0008] a second sublayer, disposed on a side of the first sublayer away from the substrate, the second sublayer extending into the first opening, and the second sublayer defining a third opening in the first opening;

[0009] Wherein, light-emitting units with the same light-emitting color are arranged in the third opening and the second opening, and the diameter of the circumscribed circle of the third opening is equal to the diameter of the circumscribed circle of the second opening.

[0010] Optionally, in one embodiment, the second sublayer extends from the side wall of the first opening to the side of the first sublayer away from the substrate, and the second sublayer is provided with a fourth opening, the fourth opening is located in the second display area, and the fourth opening is arranged corresponding to the second opening.

[0011] Optionally, in one embodiment, the circumscribed circle diameter of the fourth opening is greater than the circumscribed circle diameter of the second opening, and the difference between the circumscribed circle diameters of the fourth opening and the second opening is greater than or equal to 6 microns and less than or equal to 14 microns.

[0012] Optionally, in one embodiment, the circumscribed circle diameter of the first opening is greater than the circumscribed circle diameter of the third opening, and the difference between the circumscribed circle diameters of the first opening and the third opening is greater than or equal to 2 microns and less than or equal to 8 microns.

[0013] Optionally, in one embodiment, the material of the first sub-layer includes black filler and negative organic photoresist; the material of the second sub-layer includes transparent organic material.

[0014] Optionally, in one embodiment, the thickness of the first sub-layer is greater than the thickness of the second sub-layer.

[0015] Optionally, in one embodiment, the thickness of the first sublayer is greater than or equal to 0.6 micrometers and less than or equal to 1.5 micrometers; the thickness of the second sublayer is greater than or equal to 0.2 micrometers and less than or equal to 0.5 micrometers.

[0016] Optionally, in one embodiment, the display panel further includes a supporting portion, which is provided on a side of the second sublayer away from the first sublayer, the supporting portion is in contact with the first sublayer, and a material of the supporting portion is the same as a material of the second sublayer.

[0017] Optionally, in one embodiment, a plurality of pixels are provided in the second display area in a direction from the first display area to the second display area; the number of the pixels in the second display area is greater than or equal to 1 and less than or equal to 100.

[0018] An embodiment of the present application provides a display device, comprising any of the display panels described above.

[0019] Beneficial effects of the embodiments of the present application: The embodiments of the present application provide a display panel and a display device, which provides a first sublayer and a second sublayer by setting a first sublayer so that the first sublayer has a first opening and a second opening, the first opening is located in the first display area, and the second opening is located in the second display area, the second sublayer is arranged on the side of the first sublayer away from the substrate, the second sublayer extends into the first opening, and the second sublayer has a third opening in the first opening, and light-emitting units of the same light-emitting color are provided in the third opening and the second opening, and the circumscribed circle diameter of the third opening is equal to the circumscribed circle diameter of the second opening, so that the opening size of the pixel definition layer of the display panel in the first display area and the second display area is consistent, thereby achieving brightness uniformity of the entire display panel and avoiding the occurrence of the "circular powder" phenomenon in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0022] Figure 2 Provided in the embodiments of this application Figure 1 Schematic diagram of the cross section corresponding to AA`

[0023] Figure 3 Provided in the embodiments of this application Figure 2 The enlarged schematic diagram of point B in the middle;

[0024] Figure 4 Provided in the embodiments of this application Figure 2 The enlarged schematic diagram of point C in the middle;

[0025] Figure 5 A partial plan view of a pixel definition layer of a display panel provided in an embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the actual use or working mode of the device, specifically the direction of the drawings in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only, and features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; or communication between them; direct or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0030] The disclosure below provides many different embodiments for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present application. In addition, the examples of various specific processes and materials provided in the present application, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0031] Please combine Figure 1 、 Figure 2 、 Figure 3 and Figure 4 ;in, Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application; Figure 2 Provided in the embodiments of this application Figure 1 Schematic diagram of the cross section corresponding to AA'; Figure 3 Provided in the embodiments of this application Figure 2 The enlarged schematic diagram of point B in the middle; Figure 4Provided in the embodiments of this application Figure 2 Enlarged schematic diagram at point C in the middle.

[0032] This embodiment provides a display panel 1, which includes but is not limited to an organic light emitting diode display panel 1 (Organic Light Emitting Diode OLED), wherein the display panel 1 includes a first display area 110 and a second display area 120 located on at least one side of the first display area 110; wherein, the display panel 1 also includes a non-display area 200, the second display area 120 is located between the first display area 110 and the non-display area 200, the first display area 110 is located at the center of the display panel 1, the second display area 120 is located at the edge of the display panel 1 relative to the first display area 110, and the second display area 120 can be arranged around the first display area 110.

[0033] The display panel 1 includes a stacked substrate 11, a driving circuit layer 12, a flat layer 13, a pixel definition layer 15, a light-emitting device layer 14, an encapsulation layer 16, a color filter layer 17 and a cover plate 18; wherein, the color filter layer 17 includes a black matrix 171 and a plurality of spaced-apart color resist units 172, and the black matrix 171 is arranged between two adjacent color resist units 172. By replacing the polarizer in the related art with the color filter layer 17, not only can the thickness of the display panel 1 be effectively reduced to achieve a lightweight design, but also external reflected light can be reduced, the transmittance of the display panel 1 can be increased, and thus the display effect can be improved.

[0034] Specifically, the base 11 may include a first substrate, a spacer layer, and a second substrate stacked in sequence. The first substrate and the second substrate may both be rigid substrates or flexible substrates. The materials of the first substrate and the second substrate may both be glass, quartz, polyimide, and the like. The material of the spacer layer includes but is not limited to silicon nitride, silicon oxide, and other materials with water absorption properties.

[0035] The driving circuit layer 12 is used to drive the light-emitting device layer 14 and provide the required electrical signals to control the switching state and brightness of the light-emitting device, thereby realizing image display and color adjustment of the display panel 1; the driving circuit layer 12 may include a plurality of thin film transistors 121, and the thin film transistors 121 may be of etching barrier type, back channel etching type, or divided into bottom-gate thin film transistors 121, top-gate thin film transistors 121 and other structures according to the position of the gate and the active layer. This embodiment does not impose any restrictions on this; it can be understood that the driving circuit layer 12 is a conventional film layer well known to those skilled in the art, and its specific structure will not be described in detail here.

[0036] The flat layer 13 is used to provide a smooth surface, eliminate surface unevenness of the substrate 11 or other layers, and ensure that subsequent layers (such as the pixel definition layer 15, the light-emitting device layer 14, etc.) can be deposited evenly, thereby improving the display effect and performance of the display panel 1.

[0037] The pixel definition layer 15 includes a first sublayer 151 and a second sublayer 152. The first sublayer 151 is provided with a first opening 1511 and a second opening 1512. The first opening 1511 is located in the first display area 110, and the second opening 1512 is located in the second display area 120. The second sublayer 152 is provided on a side of the first sublayer 151 away from the substrate 11. The second sublayer 152 extends into the first opening 1511, and the second sublayer 152 is provided with a third opening 1521 in the first opening 1511. The third opening 1521 is connected to the second opening 1512.

[0038] Among them, the second opening 1512 and the third opening 1521 are both pixel openings, and the shapes of the pixel openings include but are not limited to one of a circle, a square and a prismatic shape. The third opening 1521 and the second opening 1512 are provided with light-emitting units 1420 of the same light-emitting color, and the circumscribed circle diameter L3 of the third opening 1521 is equal to the circumscribed circle diameter L2 of the second opening 1512; specifically, the orthographic projection area of ​​the third opening 1521 on the substrate 11 is equal to the orthographic projection area of ​​the second opening 1512 on the substrate 11, so that the opening size of the pixel definition layer 15 in different areas of the display panel 1 is consistent, thereby achieving brightness uniformity of the entire display panel 1, so that the brightness and color of the display panel 1 in the display area are consistent, avoiding the occurrence of the "circular powder" phenomenon.

[0039] The light-emitting device layer 14 includes an anode layer 141, a light-emitting layer 142, and a cathode layer (not shown) stacked and sequentially connected. The anode layer 141 includes a plurality of anodes 1411 spaced apart. The pixel definition layer 15 includes a plurality of pixel openings corresponding one-to-one to the plurality of anodes 1411, and each pixel opening exposes a portion of the upper surface of the anode 1411. The light-emitting layer 142 may include a plurality of light-emitting units 1420 corresponding one-to-one to the plurality of anodes 1411. The plurality of light-emitting units 1420 may include a first light-emitting unit 1421, a second light-emitting unit 1422, and a third light-emitting unit 1423, each emitting light of different colors. The anode 1411 is electrically connected to the thin-film transistor 121. The thin-film transistor 121 controls the current flow to the anode 1411 by adjusting a gate signal. The anode 1411 provides a positive charge to drive the light-emitting unit 1420. The organic material in the light-emitting unit 1420 is recombined under the action of the positive charge of the anode 1411 and the negative charge of the cathode layer, generating electroluminescence and emitting visible light.

[0040] The encapsulation layer 16 is arranged on the side of the light-emitting device layer 14 away from the pixel definition layer 15, and the encapsulation layer 16 is used to encapsulate the light-emitting device layer 14 to prevent the first electrode, the second electrode and the light-emitting layer 142 in the light-emitting device layer 14 from contacting with water and oxygen in the air and shortening the service life of the display panel 1; wherein, the encapsulation layer 16 can be an inorganic layer, an organic layer or an overlapping layer of an inorganic layer and an organic layer, and the preparation material of the inorganic layer includes but is not limited to silicon nitride, silicon oxide or silicon oxynitride, and the preparation material of the organic layer includes but is not limited to polyacrylate.

[0041] The cover plate 18 includes but is not limited to a passivation film 181 (PAS), an optical adhesive 182 (Optically Clear Adhesive, OCA) and a glass cover plate 183 (Cover Glass, CG), wherein the passivation film 181 covers the color filter layer 17, which can increase the leveling property of the color filter layer 17 and improve its surface smoothness, thereby improving the display effect; the optical adhesive 182 is used to firmly bond the glass cover plate 183 to the passivation film 181 while ensuring high light transmittance; the glass cover plate 183 is used to protect the inner layer components of the display panel 1, provide mechanical strength, and enhance the durability and scratch resistance of the display panel 1.

[0042] Please continue to combine Figure 1 、 Figure 2 and Figure 3In one embodiment, the material of the second sub-layer 152 includes a transparent organic material, which includes but is not limited to one of polyimide, polymethyl methacrylate and phenolic resin. By adopting a transparent organic material, the second sub-layer 152 can not only effectively transmit light to ensure the optical performance of the display panel 1, but also enhance the structural stability of the second sub-layer 152 to ensure the durability of the display panel 1 in long-term use.

[0043] The material of the first sub-layer 151 includes black filler and negative organic photoresist, and the black filler includes but is not limited to black pigments, such as carbon black, copper, cobalt, manganese, chromium and other oxides and their oxide particles or aniline black, benzodifuranone series, perylene series, azo series and other organic pigment particles, and the negative organic photoresist includes but is not limited to acrylate and polyisoprene materials; it can be understood that by setting the material of the first sub-layer 151 to include black filler, the first sub-layer 151 has light absorption and can absorb ambient light incident into the display panel 1, thereby preventing the ambient light from being reflected and emitted and affecting the display effect of the display panel 1.

[0044] The anode 1411 includes an exposed portion 14111 and an overlapping portion 14112 arranged on the periphery of the exposed portion 14111, one exposed portion 14111 corresponds to one light-emitting unit 1420, and the first sub-layer 151 covers the overlapping portion 14112, that is, the orthographic projection of the first sub-layer 151 in a direction perpendicular to the substrate 11 covers the orthographic projection of the overlapping portion 14112 in a direction perpendicular to the substrate 11.

[0045] It is understandable that in the display panel of the depolarizer, the metal layer inside the display panel (such as the anode layer) may reflect the ambient light from the outside that enters the panel, thereby interfering with the normal display effect of the display panel and making the user's visual experience worse; this embodiment sets the first sub-layer 151 above the overlapping part 14112 of the anode 1411, and the material of the first sub-layer 151 includes black filler and negative organic photoresist. The first sub-layer 151 is used to block the overlapping part 14112, so that most of the ambient light reaches the first sub-layer 151 before entering the anode 1411. The first sub-layer 151 absorbs the ambient light and prevents the external ambient light from directly hitting the anode 1411, thereby reducing the reflection of the external ambient light by the anode 1411, thereby improving the light output effect of the display panel 1 and enhancing the user experience.

[0046] It should be noted that in the actual production process, the photolithography process inevitably has problems of uneven coating or uneven diffusion of the developing solvent, especially at the edge of the display panel. Since the thickness of the photoresist and the exposure energy distribution are different from those in the central area, the edge area is more prone to over-development during the development process, resulting in the pixel definition layer opening size being too large, making the brightness of the edge area relatively higher, and ultimately causing the display screen to have a "circular pink" phenomenon, that is, the white light brightness in the edge area is too high and the color is unbalanced, affecting the uniformity of the entire display screen.

[0047] It can be understood that by setting the material of the first sub-layer 151 to include a negative organic photoresist, the negative organic photoresist will undergo a cross-linking reaction during the exposure process, that is, the molecular chains in the illuminated area are cross-linked and form a strong network structure. The network structure has high solvent resistance and chemical stability, so that during the development process, the first sub-layer 151 is not easily dissolved or peeled off by the developer, thereby avoiding the problem of over-development of the first sub-layer 151 in the second display area 120, ensuring that the circumscribed circle diameter L3 of the third opening 1521 is equal to the circumscribed circle diameter L2 of the second opening 1512, and ensuring that the opening size of the pixel definition layer 15 in different areas of the display panel 1 remains consistent, thereby effectively reducing the occurrence of the "circular powder" phenomenon, improving the uniformity and color consistency of the display effect, and improving the overall quality of the display effect.

[0048] Furthermore, the thickness of the first sub-layer 151 is greater than the thickness of the second sub-layer 152; specifically, the thickness of the first sub-layer 151 is greater than or equal to 0.6 microns and less than or equal to 1.5 microns; the thickness of the second sub-layer 152 is greater than or equal to 0.2 microns and less than or equal to 0.5 microns.

[0049] It should be noted that when the material of the first sub-layer 151 includes black filler and negative organic photoresist, the negative organic photoresist will undergo a cross-linking reaction during the exposure process to form a solid network structure; if the exposure amount is too large, the black filler may form particles during the cross-linking reaction, and these particles will be exposed at the edge of the pixel opening after development, thereby affecting the light efficiency and display effect of the light-emitting unit 1420; on the contrary, if the exposure amount is too small, it may cause the first sub-layer 151 to have insufficient cross-linking, resulting in weak adhesion of the first sub-layer 151, and eventually the problem of film peeling will occur, affecting the quality of the entire pixel definition layer 15.

[0050] It can be understood that this embodiment ensures that the cross-linking reaction is complete by setting the thickness of the first sub-layer 151 to be greater than or equal to 0.6 microns and less than or equal to 1.5 microns, so that the negative organic photoresist has good resistance to developing solvents during the development process, avoiding the occurrence of unstable or falling off film layers due to insufficient cross-linking; at the same time, by setting the thickness of the second sub-layer 152 to be greater than or equal to 0.2 microns and less than or equal to 0.5 microns, the optical performance and mechanical stability of the display panel 1 can be ensured without increasing the overall thickness of the display panel 1, and it meets the design requirements of modern thin display panels 1.

[0051] Please continue to combine Figure 1 、 Figure 2 and Figure 4 In one embodiment, the second sub-layer 152 extends from the side wall of the first opening 1511 to the side of the first sub-layer 151 away from the substrate 11, and the second sub-layer 152 is provided with a fourth opening 1522. The fourth opening 1522 is located in the second display area 120, and the fourth opening 1522 is arranged corresponding to the second opening 1512, thereby improving the consistency and uniformity of the overall display effect of the display panel 1.

[0052] Specifically, the first opening 1511 and the second opening 1512 of the first sub-layer 151, and the third opening 1521 and the fourth opening 1522 of the second sub-layer 152 can be processed by the same photolithography process, thereby ensuring the high consistency of the pixel openings (the first opening 1511, the second opening 1512, the third opening 1521 and the fourth opening 1522) in size and position, avoiding the inconsistency of the opening size caused by photolithography process errors, and thereby improving the display effect of the display panel 1; at the same time, it can also reduce errors in the production process, improve the efficiency of the manufacturing process, reduce production costs, and further improve the production efficiency and reliability of the product.

[0053] Please continue to combine Figure 1 、 Figure 2 and Figure 4 In one embodiment, the circumscribed circle diameter L4 of the fourth opening 1522 is greater than the circumscribed circle diameter L2 of the second opening 1512, and the difference between the circumscribed circle diameter L4 of the fourth opening 1522 and the circumscribed circle diameter L2 of the second opening 1512 is greater than or equal to 6 microns and less than or equal to 14 microns, thereby helping to precisely control the size of the second opening 1512 of the second sub-layer 152.

[0054] Specifically, the second sub-layer 152 is arranged on the side of the first sub-layer 151 away from the substrate 11, and the fourth opening 1522 is arranged corresponding to the second opening 1512. By setting the circumscribed circle diameter L4 of the fourth opening 1522 to be larger than the circumscribed circle diameter L2 of the second opening 1512, the larger fourth opening 1522 can allow more exposure light to enter the first sub-layer 151 during the development process, so that the light distribution during the development process is more uniform, thereby reducing the dimensional error caused by uneven exposure or uneven development.

[0055] At the same time, it should be noted that the reflectivity of the display panel is generally related to the propagation path and reflection of light. In the relevant display panel, after the light is emitted from the light-emitting unit, part of the light may be reflected back by the panel surface or internal structure, especially at the junction between the layers; in this embodiment, by setting the circumscribed circle diameter L4 of the fourth opening 1522 to be larger than the circumscribed circle diameter L2 of the second opening 1512, and the difference between the circumscribed circle diameter L4 of the fourth opening 1522 and the circumscribed circle diameter L2 of the second opening 1512 is greater than or equal to 6 microns and less than or equal to 14 microns, it can effectively avoid direct reflection of light at the interface between the first sub-layer 151 and the second sub-layer 152, thereby reducing the reflectivity of the display panel 1.

[0056] Furthermore, the circumscribed circle diameter L1 of the first opening 1511 is greater than the circumscribed circle diameter L3 of the third opening 1521, and the circumscribed circle diameter L1 of the first opening 1511 is less than or equal to the circumscribed circle diameter L4 of the fourth opening 1522; wherein, the difference between the circumscribed circle diameter L1 of the first opening 1511 and the circumscribed circle diameter L3 of the third opening 1521 is greater than or equal to 2 microns and less than or equal to 8 microns; the difference between the circumscribed circle diameter L4 of the fourth opening 1522 and the circumscribed circle diameter L2 of the second opening 1512 is greater than or equal to 6 microns and less than or equal to 14 microns, thereby achieving a high pixel density (Pixels Per Inch, PPI) of the display panel 1.

[0057] It is understandable that in a display panel with a high pixel density, due to the high size and arrangement density of each pixel, any slight size error may lead to uneven pixel spacing, thereby affecting the display effect; this embodiment precisely controls the difference between the circumscribed circles of each pixel opening to keep it within a strict tolerance range, thereby avoiding pixel misalignment or uneven gaps caused by size errors, improving the uniformity of pixel arrangement, and ensuring the display quality of the display panel under high pixel density conditions.

[0058] Please continue to combine Figures 1 to 4In one embodiment, the display panel 1 further includes a supporting portion 19, which is provided on a side of the second sub-layer 152 away from the first sub-layer 151. The supporting portion 19 is in contact with the first sub-layer 151, and the material of the supporting portion 19 is the same as that of the second sub-layer 152, thereby reducing multiple exposure and development steps, simplifying the manufacturing process, and improving the production efficiency and reliability of the product.

[0059] Specifically, the material of the support portion 19 is the same as that of the second sub-layer 152 . The support portion 19 and the second sub-layer 152 can be manufactured through the same photolithography process, thereby avoiding compatibility issues between different materials and simplifying the overall production process.

[0060] Please combine Figure 1 、 Figure 2 and Figure 5 ;in, Figure 5 A partial plan view of the pixel definition layer of the display panel provided in an embodiment of the present application.

[0061] In one embodiment, a plurality of pixels 140 are provided in the second display area 120 in a direction from the first display area 110 to the second display area 120 ; wherein the number of the pixels 140 in the second display area 120 is greater than or equal to 1 and less than or equal to 100.

[0062] Specifically, the pixel 140 includes a red sub-pixel 1401, a green sub-pixel 1402 and a blue sub-pixel 1403. The red sub-pixel 1401 includes a first light-emitting unit 1421, the green sub-pixel 1402 includes a second light-emitting unit 1422, and the blue sub-pixel 1403 includes a third light-emitting unit 1423. That is, this embodiment takes the light-emitting color of the first light-emitting unit 1421 as red, the light-emitting color of the second light-emitting unit 1422 as green, and the light-emitting color of the third light-emitting unit 1423 as blue as an example to illustrate the technical solution of the present application.

[0063] The color resistance unit 172 includes a first color resistance unit, a second color resistance unit and a third color resistance unit, wherein the first color resistance unit is red and is set corresponding to the first light-emitting unit, the second color resistance unit is green and is set corresponding to the second light-emitting unit, and the third color resistance unit is blue and is set corresponding to the third light-emitting unit.

[0064] It can be understood that this embodiment does not impose any specific restrictions on the color of the sub-pixel 140, the luminous color of the light-emitting unit 1420, and the color of the color resistance unit 172; in actual applications, the color of the sub-pixel 140, the luminous color of the light-emitting unit 1420, and the color of the color resistance unit 172 can be adjusted as needed.

[0065] The first sub-layer 151 also includes a fifth opening 1513, a sixth opening 1514, a seventh opening 1515 and an eighth opening 1516. The fifth opening 1513 and the sixth opening 1514 are located in the first display area 110, and the seventh opening 1515 and the eighth opening 1516 are located in the second display area 120. The second sub-layer 152 has a ninth opening 1523 in the fifth opening 1513, and a tenth opening 1524 in the sixth opening 1514. The second sub-layer 152 also has an eleventh opening 1525 and a twelfth opening 1526. The eleventh opening 1525 and the twelfth opening 1526 are both located in the second display area 120, and the eleventh opening 1525 is arranged corresponding to the seventh opening 1515, and the twelfth opening 1526 is arranged corresponding to the eighth opening 1516.

[0066] Among them, the first light-emitting unit 1421 is provided in the ninth opening 1523 and the seventh opening 1515, and the circumscribed circle diameter of the ninth opening 1523 is equal to the circumscribed circle diameter of the seventh opening 1515; the second light-emitting unit 1422 is provided in the tenth opening 1524 and the eighth opening 1516, and the circumscribed circle diameter of the tenth opening 1524 is equal to the circumscribed circle diameter of the eighth opening 1516; the third light-emitting unit 1423 is provided in the third opening 1521 and the second opening 1512, and the circumscribed circle diameter of the third opening 1521 is equal to the circumscribed circle diameter of the second opening 1512, thereby improving the brightness uniformity of the display panel 1 and avoiding brightness differences caused by inconsistent pixel opening sizes.

[0067] At the same time, a plurality of pixels 140 are provided in the second display area 120, and the number thereof is greater than or equal to 1 and less than or equal to 100. By reasonably and evenly distributing the number of pixels 140 in the second display area 120, problems such as uneven brightness and color distortion of the display panel 1 in the second display area 120 can be effectively avoided, thereby improving the display effect of the display panel 1.

[0068] Furthermore, the number of the sub-pixels 140 in the first display area 110 is greater than or equal to the number of the sub-pixels 140 in the first display area 110. By controlling the number of sub-pixels 140 in each area, the color and brightness consistency of different parts of the display panel 1 can be controlled to avoid color distortion or uneven brightness caused by different numbers of sub-pixels 140.

[0069] It should be noted that this embodiment only uses Figure 5The arrangement of the openings shown is used as an example for explanation. The arrangement of the openings in the display panel 1 can also be designed in other ways according to actual needs. Different arrangement methods can meet different application needs and manufacturing process requirements, thereby ensuring the best performance of the display panel 1 in different display environments.

[0070] See also Figure 6 , is a structural schematic diagram of the display device provided in an embodiment of the present application.

[0071] This embodiment further provides a display device 2, which includes the display panel 1 described in any of the above embodiments. It can be understood that the display panel 1 has been described in detail in the above embodiments and will not be repeated here.

[0072] The display device 2 may further include a middle frame 21 , which is integrated with the display panel 1 to provide support, fixation and protection for the display panel 1 .

[0073] In specific applications, the display device 2 can be at least one of a smart phone, tablet computer, mobile phone, video phone, e-book reader, desktop computer, laptop, netbook, workstation, server, personal digital assistant, portable media player, MP3 player, mobile medical machine, camera, game console, digital camera, car navigation system, electronic billboard, ATM or wearable device, etc., which have a display function.

[0074] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] The above is a detailed introduction to a display panel and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements 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 application.

Claims

1. A display panel, characterized in that: The display panel includes a first display area and a second display area located at least on one side of the first display area, wherein the display panel includes a substrate and a pixel definition layer provided on one side of the substrate; wherein the pixel definition layer includes: The first sublayer is provided with a first opening and a second opening, wherein the first opening is located in the first display area, and the second opening is located in the second display area; a second sublayer, disposed on a side of the first sublayer away from the substrate, the second sublayer extending into the first opening, and the second sublayer defining a third opening in the first opening; Wherein, light-emitting units with the same light-emitting color are arranged in the third opening and the second opening, and the diameter of the circumscribed circle of the third opening is equal to the diameter of the circumscribed circle of the second opening.

2. The display panel according to claim 1, wherein: The second sublayer extends from the sidewall of the first opening to the side of the first sublayer away from the substrate. The second sublayer is provided with a fourth opening located in the second display area and corresponding to the second opening.

3. The display panel according to claim 2, wherein: The circumscribed circle diameter of the fourth opening is greater than the circumscribed circle diameter of the second opening, and the difference between the circumscribed circle diameters of the fourth opening and the second opening is greater than or equal to 6 micrometers and less than or equal to 14 micrometers.

4. The display panel according to claim 1, wherein: The circumscribed circle diameter of the first opening is greater than the circumscribed circle diameter of the third opening, and the difference between the circumscribed circle diameters of the first opening and the third opening is greater than or equal to 2 micrometers and less than or equal to 8 micrometers.

5. The display panel according to any one of claims 1 to 4, characterized in that: The material of the first sub-layer includes black filler and negative organic photoresist; the material of the second sub-layer includes transparent organic material.

6. The display panel according to any one of claims 1 to 4, characterized in that: The thickness of the first sub-layer is greater than the thickness of the second sub-layer.

7. The display panel according to claim 6, wherein: The thickness of the first sub-layer is greater than or equal to 0.6 micrometers and less than or equal to 1.5 micrometers; the thickness of the second sub-layer is greater than or equal to 0.2 micrometers and less than or equal to 0.5 micrometers.

8. The display panel according to any one of claims 1 to 4, characterized in that: The display panel further includes a supporting portion, which is provided on a side of the second sub-layer away from the first sub-layer, is in contact with the first sub-layer, and is made of the same material as the second sub-layer.

9. The display panel according to any one of claims 1 to 4, characterized in that: In a direction from the first display area to the second display area, a plurality of pixels are arranged in the second display area; wherein the number of the pixels in the second display area is greater than or equal to 1 and less than or equal to 100.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

Images