Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate, a first pixel definition layer, a second pixel definition layer, a display opening, virtual pixels and display pixels. The first pixel definition layer is located on the substrate and comprises a display area and a non-display area located on the periphery of the display area, and the first pixel definition layer comprises a first virtual opening located in the non-display area. The second pixel definition layer is located on the side, away from the substrate, of the first pixel definition layer and comprises a second virtual opening communicated with the first virtual opening. The display openings penetrate through the first pixel definition layer and the second pixel definition layer, the virtual pixels are located in the first virtual openings and the second virtual openings, and the display pixels are located in the display openings. Therefore, under the condition that the occupied area of the non-display area of the virtual pixels is not changed, the ink droplet volume of the non-display area can be increased during ink-jet printing, and a better buffering effect is provided for the display pixels, so that the film forming uniformity of the display pixels is improved.

Description

TECHNICAL FIELD

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

[0002] Organic Light Emitting Diode (OLED) display technology has become a research hotspot in the field of photoelectric display technology due to its self-luminous, wide viewing angle, high contrast, low power consumption, extremely high response speed, ultra-light weight, flexible display, screen curling, strong temperature adaptability, simple manufacturing process and other advantages. The method of using ink-jet printing (IJP) to prepare the corresponding device is attracting attention due to its high material utilization rate. However, when using ink-jet printing to prepare a display panel, the film thickness at the edge position after drying is prone to be uneven.

[0003] In order to ensure the film formation uniformity of the display area edge and the luminance uniformity of the light-emitting device, in addition to printing light-emitting materials in the display area, a virtual pixel is generally printed with the same material around the display area to ensure the film formation uniformity of the display area.

[0004] However, the space of the non-display area outside the display area is limited, and how to set a virtual pixel in the limited space to improve the film formation uniformity of the display area is a problem to be solved at present. SUMMARY

[0005] The purpose of the present application is to provide a display panel and a display device, which aims to improve the film formation uniformity of the display pixels in the display area.

[0006] The display panel provided by the embodiments of the present application comprises a substrate, a first pixel definition layer located on the substrate and comprising a display area and a non-display area located outside the display area, the first pixel definition layer comprising a first virtual opening located in the non-display area, a second pixel definition layer located on the side of the first pixel definition layer away from the substrate and comprising a second virtual opening in communication with the first virtual opening, a display opening penetrating the first pixel definition layer and the second pixel definition layer, a virtual pixel located in the first virtual opening and the second virtual opening, and a display pixel located in the first display opening and the second display opening.

[0007] In some embodiments, the first virtual openings are arranged at intervals along a first direction and a second direction, the second virtual openings are arranged at intervals along the first direction and the second direction, the first direction and the second direction intersect each other and are both parallel to the substrate, and two adjacent first virtual openings are in communication through one second virtual opening.

[0008] In some embodiments, a second virtual opening, which is connected with two adjacent first virtual openings and partially overlaps with the two virtual openings, is located between the two virtual openings.

[0009] In some embodiments, the first virtual opening and the second virtual opening are rhombic openings.

[0010] In some embodiments, the first virtual opening and the second virtual opening are both arranged around the display area, and the second virtual opening at least partially overlaps with the first virtual opening.

[0011] In some embodiments, the display panel further comprises a planar layer, which is located between the substrate and the first pixel definition layer.

[0012] In some embodiments, the display panel further comprises a planar layer on the substrate, the planar layer comprises a virtual planar portion in the non-display area, the virtual planar portion comprises a surface facing away from the substrate, and the virtual planar portion has a recess recessed relative to the surface; the first pixel definition layer comprises a virtual definition portion in the non-display area, the virtual definition portion and the first virtual opening are located in the recess; or at least part of the virtual planar portion is the virtual definition portion, and the recess is the first virtual opening.

[0013] In some embodiments, the depth of the first virtual opening is equal to the depth of the recess.

[0014] In some embodiments, the display opening comprises a first display opening and a second display opening connected therewith, the first display opening penetrates the first pixel definition layer, and the second display opening penetrates the second pixel definition layer.

[0015] In some embodiments, the first display opening extends along a first direction and is arranged at intervals along a second direction, the first direction and the second direction intersect each other and are both parallel to the substrate; the second display opening is arranged in an array in the first direction and the second direction, and the orthographic projection of the second display opening on the substrate at least overlaps with the orthographic projection of the first display opening on the substrate.

[0016] In some embodiments, the display pixel comprises a sub-display pixel located in the second display opening, the virtual pixel comprises a sub-virtual pixel located in the second virtual opening; the sub-virtual pixel comprises a first sub-virtual pixel and a second sub-virtual pixel, the first sub-virtual pixel is located on both sides of the display area in the first direction, and the second sub-virtual pixel is located on both sides of the display area in the second direction; a center point of the first sub-virtual pixel is located on a line connecting center points of a column of the sub-display pixels; and a center point of the second sub-virtual pixel is located on a line connecting center points of a row of the sub-display pixels.

[0017] In some embodiments, the virtual pixel comprises side edge virtual pixels and corner virtual pixels connected to each other, the side edge virtual pixels are located at the side edges of the display area, and the corner virtual pixels are located at the corners of the display area; the first virtual opening and the second virtual opening corresponding to the side edge virtual pixels are rhombic openings, and the first virtual opening and the second virtual opening corresponding to the corner virtual pixels are right angle openings.

[0018] In some embodiments, the virtual pixel comprises side edge virtual pixels located on both sides of the display area in the second direction, in the first virtual opening and the second virtual opening corresponding to the side edge virtual pixels, the second virtual opening is farther away from the display area than the first virtual opening; the second pixel definition layer further comprises a third virtual opening, the third virtual opening is located between the second virtual opening and the display area in the second direction, the third virtual opening is in communication with at least two adjacent first virtual openings, and the opening shape of the third virtual opening is different from the opening shape of the first virtual opening.

[0019] The embodiments of the present application also provide a display device comprising the display panel in any of the above embodiments.

[0020] In the display panel provided by the embodiments of the present application, the first virtual opening is located in the first pixel definition layer, and the second virtual opening is located in the second pixel definition layer, so that the volume of the virtual pixel is increased by using two virtual openings. Therefore, the volume of the ink droplet of the non-display area can be increased when the inkjet printing is performed under the condition that the area of the non-display area occupied by the virtual pixel is unchanged, so that a large amount of solvent atmosphere is created, and a better buffering effect is provided for the display pixel in the drying process, so as to improve the film forming uniformity of the display pixel. BRIEF DESCRIPTION OF DRAWINGS

[0021] The technical solutions and other beneficial effects of the present application will be apparent to those skilled in the art from the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0022] Figure 1is a top view structural schematic diagram of a virtual pixel and a display pixel in a display panel provided by some embodiments of the present application;

[0023] Figure 2 is Figure 1 is a sectional view structural schematic diagram of the display panel at A-A1 in

[0024] Figure 3 is Figure 2 is a top view structural schematic diagram of a display opening of the display panel in

[0025] Figure 4 is Figure 2 is a top view structural schematic diagram of a first display opening of the display panel in

[0026] Figure 5 is Figure 2 is a top view structural schematic diagram of a second display opening of the display panel in

[0027] Figure 6 is a top view structural schematic diagram of a first pixel definition layer and a second pixel definition layer provided by some embodiments of the present application;

[0028] Figure 7 is Figure 6 is a sectional view structural schematic diagram of the first pixel definition layer and the second pixel definition layer at B-B1 in

[0029] Figure 8 and Figure 9 is a sectional view structural schematic diagram of the first pixel definition layer and the second pixel definition layer in a non-display area provided by some embodiments of the present application;

[0030] Figure 10 is a top view structural schematic diagram of a virtual pixel and a display pixel in a display panel provided by some embodiments of the present application;

[0031] Figure 11 is a top view structural schematic diagram of a virtual pixel and a display pixel in a display panel provided by some embodiments of the present application;

[0032] Figure 12 is a structural schematic diagram of a display device provided by some embodiments of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] In the description of the application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0035] In this application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. "Under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0037] In an embodiment, a pixel definition layer is arranged in the non-display area of the display panel, and a virtual opening surrounding the display area and a virtual pixel in the virtual opening are arranged in the pixel definition layer, which can improve the film forming uniformity of the display pixels of the display area. However, in order to ensure the film forming uniformity of the display area, more virtual pixels need to be arranged as a buffer, which further causes the display substrate to be difficult to narrow the frame. Therefore, how to improve the buffering effect of the virtual pixels to improve the film forming uniformity of the display without increasing the size of the frame is a problem to be solved at present.

[0038] Based on this, the display panel provided by the embodiments of the present application comprises: a substrate; a first pixel definition layer located on the substrate and comprising a display area and a non-display area located at the periphery of the display area, the first pixel definition layer comprising a first virtual opening located in the non-display area; a second pixel definition layer located on the side of the first pixel definition layer away from the substrate and comprising a second virtual opening in communication with the first virtual opening; a display opening penetrating the first pixel definition layer and the second pixel definition layer; a virtual pixel located in the first virtual opening and the second virtual opening; and a display pixel located in the display opening.

[0039] In the display panel provided by the embodiments of the present application, the first virtual opening is located in the first pixel definition layer, and the second virtual opening is located in the second pixel definition layer, so that the volume of the virtual pixel is increased by using two layers of virtual openings. Therefore, the volume of ink drops in the non-display area can be increased when performing inkjet printing under the condition that the area of the non-display area occupied by the virtual pixel remains unchanged (i.e., the number ratio of the virtual pixel remains unchanged), so that a large amount of solvent atmosphere is created, and better buffering effect is provided for the display pixel in the drying process, so as to improve the film forming uniformity of the display pixel.

[0040] The display panel provided by the embodiments of the present application will be described below with reference to the accompanying drawings.

[0041] Please refer to Figure 1 and Figure 2 , Figure 1 is a top view structural schematic diagram of a virtual pixel and a display pixel in the display panel provided by some embodiments of the present application, Figure 2 is Figure 1 is a sectional view structural schematic diagram of the display panel in FIG. 1 at A-A1.

[0042] The display panel 100 comprises a substrate 10, a first pixel definition layer 20, a second pixel definition layer 30, a display opening DA, a virtual pixel 40 and a display pixel 50. The first pixel definition layer 20 is located on the substrate 10 and comprises a display area AA and a non-display area NA located at the periphery of the display area AA. The first pixel definition layer 20 comprises a first virtual opening 21 located in the non-display area NA. The second pixel definition layer 30 is located on the side of the first pixel definition layer 20 away from the substrate 10 and comprises a second virtual opening 31 in communication with the first virtual opening 21. The display opening DA penetrates the first pixel definition layer 20 and the second pixel definition layer 30, the virtual pixel 40 is located in the first virtual opening 21 and the second virtual opening 31, and the display pixel 50 is located in the display opening DA.

[0043] The substrate 10 can comprise a driving substrate, and the driving substrate can comprise a thin film transistor.

[0044] AsFigure 1 As shown, display pixel 50 may include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Each display pixel 50 may include an anode, a light-emitting functional layer located on the anode, and a cathode located on the light-emitting functional layer. The anode may be electrically connected to the drain of a thin-film transistor. The structure of the anode layer includes, but is not limited to, a stacked structure of ITO / Ag / ITO oxide or a single-layer ITO structure. The structure of the light-emitting functional layer may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. The cathode layer may be made of one or more of Mg, Ag, and IZO.

[0045] In some embodiments, the structure of the virtual pixel 40 may be the same as that of the display pixel 50, that is, it also includes a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B, but the virtual pixel 40 does not emit light.

[0046] In other embodiments, the virtual pixel 40 includes an anode, a light-emitting functional layer on the anode, and a cathode on the light-emitting functional layer. However, the light-emitting layer of the light-emitting functional layer in the virtual pixel 40 may only include a solvent and no light-emitting material. Therefore, each virtual pixel 40 has no color distinction.

[0047] In some embodiments, a display pixel 50 may be configured to correspond to a virtual pixel 40 in a first direction X and in a second direction Y.

[0048] like Figure 1 As shown, the display pixel 50 includes a sub-display pixel 51 (i.e., the upper half of the display pixel 50) located within the second display opening 32, and the virtual pixel 40 includes a sub-virtual pixel 41 (i.e., the upper virtual pixel 40) located within the second virtual opening 31. It is understood that the arrangement of the sub-display pixels 51 is the same as the arrangement of the display pixels 50, while the arrangement of the sub-virtual pixels 41 is the same as the arrangement of the upper virtual pixels 40.

[0049] The sub-virtual pixel 41 includes a first sub-virtual pixel 411 and a second sub-virtual pixel 412. The first sub-virtual pixel 411 is located on both sides of the display area AA in the first direction X, and the second sub-virtual pixel 412 is located on both sides of the display area AA in the second direction Y.

[0050] The center point of the first sub-virtual pixel 411 is located on the line connecting the center points of a column of the sub-display pixels 51. The center point of the second sub-virtual pixel 412 is located on the line connecting the center points of a row of the sub-display pixels 51. That is to say, the sub-virtual pixels 41 located on the upper layer are aligned with the sub-display pixels 51 (or display pixels 50) in the first direction X and the second direction Y, which is beneficial to the pixel process design and manufacturing process.

[0051] In some embodiments, the length C2 of the first sub-virtual pixel 411 along the second direction Y can be equal to the length C1 of the sub-display pixel 51 along the second direction Y. The length D2 of the second sub-virtual pixel 412 along the first direction X can be equal to the length D1 of the sub-display pixel 51 along the first direction X.

[0052] The display opening DA extends along the thickness direction Z of the first pixel definition layer 20 and the second pixel definition layer 30, penetrating both layers. The display opening DA may include a first display opening 22 and a second display opening 32 that are connected, with the first display opening 22 penetrating the first pixel definition layer 20 and the second display opening 32 penetrating the second pixel definition layer 30. The first display opening 22 and the second display opening 32 can be fabricated separately or in a single etching process.

[0053] Display pixel 50 and virtual pixel 40 can be formed by inkjet printing in the same process, using an oleophilic ink. The material of the first pixel definition layer 20 can be different from that of the second pixel definition layer 30. For example, the first pixel definition layer 20 can be a hydrophobic material, while the second pixel definition layer 30 can be a hydrophilic material (i.e., an oleophilic material). Therefore, the second pixel definition layer 30 can act as a barrier to reduce ink mixing between different color subpixels, thereby reducing color crosstalk between different color subpixels.

[0054] like Figure 2 As shown, the second virtual opening 31 is connected to the first virtual opening 21, allowing ink to flow from the second virtual opening 31 to the first virtual opening 21. Compared to a single-layer virtual opening design, this significantly increases the volume of the ink droplet. It can be understood that the total volume of the first virtual opening 21 and the second virtual opening 31 determines the volume of the virtual pixel 40, which in turn determines the volume of the ink droplet forming the virtual pixel 40.

[0055] In some embodiments, the first virtual opening 21 is spaced apart along a first direction X and a second direction Y, and the second virtual opening 31 is spaced apart along a first direction X and a second direction Y. The first direction X and the second direction Y intersect each other and are both parallel to the substrate 10. For example, the first direction X is perpendicular to the second direction Y, and the first direction X is the long side direction of the display panel 100, and the second direction Y is the wide side direction of the display panel 100.

[0056] The arrangement of the first virtual opening 21 and the second virtual opening 31 is as follows: Figure 1As shown, in the non-display area NA, the first virtual openings 21 are in the lower layer, and the second virtual openings 31 are in the upper layer. Two adjacent first virtual openings 21 are communicated by one second virtual opening 31. For example, two first virtual openings 21 adjacent in the first direction X are communicated by one second virtual opening 31 above, and two first virtual openings 21 adjacent in the second direction Y are communicated by another second virtual opening 31 above. Thus, the plurality of first virtual openings 21 and the plurality of second virtual openings 31 are communicated in both the first direction X and the second direction Y, and the virtual pixels 40 in the non-display area NA are communicated as a whole, which is conducive to improving the film thickness uniformity of the virtual pixels 40.

[0057] Alternatively, two adjacent second virtual openings 31 are communicated by one first virtual opening 21 below. Specifically, two second virtual openings 31 adjacent in the first direction X are communicated by one first virtual opening 21 below, and two second virtual openings 31 adjacent in the second direction Y are communicated by another first virtual opening 21 below.

[0058] In some embodiments, the plurality of first virtual openings 21 and the plurality of second virtual openings 31 are arranged around the display area AA, i.e., the virtual pixels 40 continuously surround the periphery of the display area AA, thus improving the overall film thickness uniformity of the non-display area NA to improve the film thickness uniformity of the display area AA.

[0059] In other embodiments, the virtual pixels 40 can also be discontinuously arranged at the diagonal positions of the display panel, i.e., the first virtual openings 21 are not communicated at the diagonal positions, and the second virtual openings 31 are not communicated at the diagonal positions.

[0060] As shown, the second virtual opening 31 communicating two adjacent first virtual openings 21 is located between the two first virtual openings 21 and partially overlaps the two first virtual openings 21. Figure 2 Specifically, the first virtual opening 21 adjacent in the first direction X and the second virtual opening 31 communicated therewith overlap in the first direction X, and the first virtual opening 21 adjacent in the second direction Y and the second virtual opening 31 communicated therewith overlap in the second direction Y. That is, the second virtual opening 31 communicating two first virtual openings 21 adjacent in the first direction X overlaps with the two first virtual openings 21 at both ends in the first direction X. The second virtual opening 31 communicating two first virtual openings 21 adjacent in the second direction Y overlaps with the two first virtual openings 21 at both ends in the second direction Y.

[0061] As shown, the second virtual opening 31 communicating two adjacent first virtual openings 21 is located between the two first virtual openings 21 and partially overlaps the two first virtual openings 21.

[0062] Figure 1 ​As shown, the first virtual opening 21 and the second virtual opening 31 are rhombic openings. The prismatic shape is more conducive to the communication of the first virtual opening 21 and the second virtual opening 31, and can accommodate a larger volume of ink drops than other shapes.

[0063] It should be noted that, Figure 1 In the first display opening 22 in the overhead direction is blocked by the display pixel 50, so Figure 1 In the first display opening 22 is not shown.

[0064] As Figure 2 shown, the first display opening 22 and the second display opening 32 are in communication, and the design of the two layers of display openings can also improve the volume and thickness of the display pixel 50, and increase the preparation space of the display pixel 50. Among them, the second display opening 32 has the same overhead shape as the display pixel 50, that is, the arrangement of the display pixel 50 is determined by the arrangement of the second display opening 32.

[0065] Please refer to Figure 3 , Figure 3 is Figure 2 the overhead structure diagram of the display opening of the display panel. It should be noted that when the first pixel definition layer 20 is blocked by the second pixel definition layer 30, only the second pixel definition layer 30 is displayed in the overhead view.

[0066] The first display opening 22 and the second display opening 32 in the display opening DA are one-to-one and have the same shape, and the first display opening 22 is arranged along the first direction X and the second direction Y, and the second display opening 32 is arranged along the first direction X and the second direction Y.

[0067] The first pixel definition layer 20 and the second pixel definition layer 30 are both grid-shaped to form the first display opening 22 and the second display opening 32, respectively.

[0068] Please refer to Figure 4 and Figure 5 , Figure 4 is Figure 2 the overhead structure diagram of the first display opening of the display panel, Figure 5 is Figure 2 the overhead structure diagram of the second display opening of the display panel. The embodiment is different from the embodiment in Figure 3 in that the shapes of the first display opening 22 and the second display opening 32 are different.

[0069] As Figure 4As shown, the first display opening 22 extends along the first direction X and is spaced apart along the second direction Y. The first direction X and the second direction Y intersect each other and are both parallel to the substrate 10. For example, the first direction X is perpendicular to the second direction Y.

[0070] like Figure 5 As shown, the second display opening 32 is arranged in an array in the first direction X and the second direction Y, and the orthographic projection of the second display opening 32 on the substrate 10 overlaps at least with the orthographic projection of the first display opening 22 on the substrate 10, thereby achieving communication between the first display opening 22 and the second display opening 32. Specifically, multiple rows of second display openings 32 correspond one-to-one with multiple first display openings 22. Each row of second display openings 32 overlaps at least one of its corresponding first display openings 22 in the second direction.

[0071] like Figure 2 As shown, the top dimension W1 of the second display opening 32 in the second direction Y can be larger than the top dimension W1 of the first display opening 22 in the second direction Y, thereby forming a display opening whose size gradually increases from bottom to top, which is beneficial to improving the luminous efficiency of the display pixel 50.

[0072] Combination Figure 1 Red subpixels R are arranged at intervals along the first direction X, green subpixels G are arranged at intervals along the first direction X, and blue subpixels B are arranged at intervals along the first direction X. A column of red subpixels R is spaced apart by a second pixel definition layer 30 in the top-view direction and connected below by a continuously extending first display opening 22. A column of green subpixels G is spaced apart by a second pixel definition layer 30 in the top-view direction and connected below by a continuously extending first display opening 22. A column of blue subpixels B is spaced apart by a second pixel definition layer 30 in the top-view direction and connected below by a continuously extending first display opening 22. This allows ink of subpixels of the same color to flow in the first direction X, thereby improving the film uniformity of subpixels of the same color.

[0073] In some embodiments, the display panel 100 further includes a planarization layer 60, which is located between the substrate 10 and the first pixel definition layer 20, i.e., on the substrate 10. For example... Figure 2 As shown, the first pixel definition layer 20, the virtual pixel 40, and the display pixel 50 are all located on the upper surface of the flat layer 60.

[0074] Please see Figure 6 and Figure 7 , Figure 6 This is a top view schematic diagram of the first pixel definition layer and the second pixel definition layer provided in some embodiments of this application. Figure 7 yes Figure 6A schematic diagram of the cross-sectional structure of the first pixel definition layer and the second pixel definition layer at point B-B1. Figure 7 The structure of virtual pixel 40 is also shown. This embodiment is similar to... Figures 1-2 The difference between the embodiments lies in the top view shape of the first virtual opening 21 and the second virtual opening 31.

[0075] The second virtual opening 31 overlaps at least partially with the first virtual opening 21, that is, the second virtual opening 31 and the first virtual opening 21 can completely overlap or be partially misaligned (or offset). Figure 7 This shows the situation where the first virtual opening 21 and the second virtual opening 31 completely overlap, therefore... Figure 6 In the top view, the first pixel definition layer 20 is covered by the second pixel definition layer 30. Figure 6 Only the second pixel definition layer 30 is displayed.

[0076] Figure 6 The first virtual opening 21 and the second virtual opening 31 in the display area AA are both extended around the display area AA, which can also realize that the virtual pixels 40 are continuously arranged around the display area AA, so as to improve the film uniformity of the virtual pixels 40 around the display area AA, and thus improve the film uniformity of the display pixels 50.

[0077] Please see Figure 8 and Figure 9 , Figure 8 and Figure 9 This is a schematic cross-sectional view of the first pixel definition layer and the second pixel definition layer in the non-display area according to some embodiments of this application. Figure 8 and Figure 9 The structure of virtual pixel 40 is also shown. This embodiment is similar to... Figure 2 The difference in the embodiments lies in the structure and position of the first pixel definition layer 20 in the non-display area NA.

[0078] The display panel 100 also includes a planarization layer 60 located on the substrate 10. The planarization layer 60 includes a virtual planar portion 60a located in the non-display area NA. The virtual planar portion 60a includes a surface (i.e., the upper surface) facing away from the substrate 10. The virtual planar portion 60a has a groove 61 recessed relative to the surface.

[0079] like Figure 8As shown, the first pixel definition layer 20 includes a virtual definition portion 20a located in the non-display area NA, and the virtual definition portion 20a and the first virtual opening 21 are located within the groove 61. That is, the groove 61 of the virtual flat portion is used to form the virtual definition portion 20a. In this way, the groove 61 of the virtual flat portion 60a can be used to form the virtual definition portion 20a, so that the first virtual opening 21 is located within the groove 61, that is, the first virtual opening 21 is formed within the flat layer 60, thereby increasing the ink droplet volume of the virtual pixel 40.

[0080] like Figure 9 As shown, at least a portion of the virtual flattened portion 60a directly serves as the virtual definition portion 20a, and the groove 61 serves as the first virtual opening 21. That is, a portion of the flattened layer 60 is directly used as the virtual definition portion 20a of the non-display area NA, and the virtual pixel 40 is directly located within the groove 61 of the flattened layer 60. This omits the portion of the first pixel definition layer 20 in the non-display area NA, thereby further increasing the width of the groove 61 along the second direction Y, and thus further increasing the ink droplet volume of the virtual pixel 40.

[0081] In some embodiments, the first pixel definition layer 20 may include a display definition portion located in the display area AA, which is still located on the upper surface of the planarization layer 60.

[0082] exist Figure 2 In the first pixel definition layer 20, a display definition portion 20b located in the display area AA may be included. The first virtual opening 21 and the first display opening 22 are both located on the planarization layer 60. The thickness of the virtual definition portion 20a or the depth of the first virtual opening 21 is limited by the thickness of the display definition portion 20b (i.e., the depth of the first display opening 22).

[0083] And in Figure 8 and Figure 9 In this embodiment, the depth of the first virtual opening 21 is equal to the depth of the groove 61. Since the planarization layer 60 is relatively thick, the depths of the groove 61 and the first virtual opening 21 in this embodiment can be set to be relatively thick; therefore, the depth of the first virtual opening 21 can be greater than or equal to... Figure 2 The depth of the first display opening 22 is increased, thereby further increasing the ink droplet volume of the virtual pixel 40.

[0084] Please see Figure 10 , Figure 10 This is a top view structural diagram of virtual pixels and display pixels in a display panel provided in some embodiments of this application. This embodiment is related to... Figure 1 The difference in the embodiment lies in the design of the virtual pixels at the corners of the display panel.

[0085] The virtual pixel 40 includes mutually connected side virtual pixels 40a and corner virtual pixels 40b, the side virtual pixels 40a are located at the side of the display area AA, and the corner virtual pixels 40b are located at the corner of the display area AA (i.e. outside the corner). The first virtual opening 21 and the second virtual opening 31 corresponding to the side virtual pixels 40a are both diamond-shaped openings, and the first virtual opening 21 and the second virtual opening 31 corresponding to the corner virtual pixels 40b are right-angle openings. The first virtual opening 21 and the second virtual opening 31 corresponding to the corner virtual pixels 40b can be aligned vertically.

[0086] Since the side virtual pixels 40a and the corner virtual pixels 40b are connected, the right-angle openings and the diamond-shaped openings are also connected, and the right-angle openings arranged at the corner make the ink volume forming the corner virtual pixels 40b relatively small compared with the ink volume forming the side virtual pixels 40a. Figure 1 The embodiment increases, thereby improving the phenomenon of uneven film thickness caused by the faster drying rate of ink at the corner, and further improving the film thickness uniformity of the display pixel 50 at the corner.

[0087] Please refer to Figure 11 , Figure 11 is a top view structural schematic diagram of a virtual pixel and a display pixel in a display panel provided by some embodiments of the present application. The embodiment is different from the embodiment of Figure 1 The difference between the embodiment and the embodiment is the design of the virtual pixel.

[0088] The virtual pixel 40 includes side virtual pixels 40a located on both sides of the display area AA in the second direction Y, and in the first virtual opening 21 and the second virtual opening 31 corresponding to the side virtual pixels 40a, the second virtual opening 31 is farther away from the display area AA than the first virtual opening 21, i.e. the second virtual opening 31 is offset to the outside of the display area AA relative to the first virtual opening 21, and the first virtual opening 21 is closer to the display area AA, so that there is a certain blank area between the upper second virtual opening 31 and the display area AA.

[0089] The second pixel definition layer 30 further includes a third virtual opening 33, the third virtual opening 33 is located between the second virtual opening 31 and the display area AA in the second direction Y, the third virtual opening 33 is in communication with at least two adjacent first virtual openings 21, and the opening shape of the third virtual opening 33 is different from the opening shape of the first virtual opening 21. For example, the opening shape of the third virtual opening 33 can be a rectangle.

[0090] The opening shape of the third virtual opening 33 is different from the opening shape of the first virtual opening 21, which is beneficial to the communication between the third virtual opening 33 and the first virtual opening 21, and can make up for the area waste caused by the prismatic opening. For example,Figure 11 As shown, the virtual pixels 40 of different shapes can reduce the above-mentioned blank area, increase the area of the virtual opening in the same area range, and thus increase the volume of ink.

[0091] The display device provided by the embodiments of the present application also includes the display panel in any of the above embodiments.

[0092] Please refer to Figure 12 , Figure 12 is a structural schematic diagram of a display device provided by some embodiments of the present application.

[0093] The display device 200 includes a device main body and a display panel 201, which can be the display panel 100 in any of the above embodiments. In addition, the device main body can include a frame, a driving assembly, a power supply, etc., and the display device can be a mobile phone, a tablet computer, a television, or other display terminal, which is not limited herein.

[0094] The above description of the embodiments is only used to help understand the technical solutions of the present application and its core idea; those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a first pixel definition layer on the substrate, comprising a display area and a non-display area surrounding the display area, the first pixel definition layer comprising a first virtual opening in the non-display area; a second pixel definition layer on a side of the first pixel definition layer away from the substrate, comprising a second virtual opening in communication with the first virtual opening; a display opening penetrating the first pixel definition layer and the second pixel definition layer; a virtual pixel in the first virtual opening and the second virtual opening; a display pixel in the display opening.

2. The display panel of claim 1, wherein, The first virtual openings are arranged in a first direction and a second direction, the second virtual openings are arranged in the first direction and the second direction, the first direction and the second direction intersect each other and are both parallel to the substrate; Two adjacent first virtual openings are in communication through a second virtual opening.

3. The display panel of claim 2, wherein, The second virtual opening in communication with the two adjacent first virtual openings is between the two first virtual openings and partially overlaps the two first virtual openings.

4. The display panel of claim 3, wherein, The first virtual opening and the second virtual opening are rhombic openings.

5. The display panel of claim 1, wherein, The first virtual opening and the second virtual opening both extend around the display area, and the second virtual opening at least partially overlaps the first virtual opening.

6. The display panel of claim 1, wherein, The display panel further comprises a planar layer between the substrate and the first pixel definition layer.

7. The display panel of claim 1, wherein, The display panel further comprises a planar layer on the substrate, the planar layer comprising a virtual planar portion in the non-display area, the virtual planar portion comprising a surface facing away from the substrate, the virtual planar portion having a groove recessed relative to the surface; The first pixel definition layer comprises a virtual definition portion in the non-display area, the virtual definition portion and the first virtual opening being in the groove; or at least part of the virtual planar portion serves as the virtual definition portion, and the groove serves as the first virtual opening.

8. The display panel of claim 7, wherein, The depth of the first virtual opening is equal to the depth of the groove.

9. The display panel of claim 1, wherein, The display opening comprises a first display opening and a second display opening in communication, the first display opening penetrating the first pixel definition layer, and the second display opening penetrating the second pixel definition layer.

10. The display panel of claim 9, wherein, The first display openings extend in a first direction and are arranged in a second direction, the first direction and the second direction intersect each other and are both parallel to the substrate; The second display openings are arranged in the first direction and the second direction, and the orthographic projection of the second display openings on the substrate at least partially overlaps the orthographic projection of the first display openings on the substrate.

11. The display panel of claim 9, wherein, The display pixel comprises a sub-display pixel in the second display opening, and the virtual pixel comprises a sub-virtual pixel in the second virtual opening; The sub-virtual pixel comprises a first sub-virtual pixel and a second sub-virtual pixel, the first sub-virtual pixel being on both sides of the display area in the first direction, and the second sub-virtual pixel being on both sides of the display area in the second direction. The center point of the first sub-virtual pixel is located on a line connecting the center points of a column of the sub-display pixels; and the center point of the second sub-virtual pixel is located on a line connecting the center points of a row of the sub-display pixels.

12. The display panel of claim 3, wherein, The virtual pixels include side virtual pixels and corner virtual pixels, the side virtual pixels are located at the sides of the display area, and the corner virtual pixels are located at the corners of the display area. The first virtual opening and the second virtual opening corresponding to the side virtual pixels are diamond-shaped openings, and the first virtual opening and the second virtual opening corresponding to the corner virtual pixels are right-angle openings.

13. The display panel of claim 4 or 12, wherein, The virtual pixels include side virtual pixels located on both sides of the display area in the second direction, in the first virtual opening and the second virtual opening corresponding to the side virtual pixels, the second virtual opening is farther away from the display area than the first virtual opening. The second pixel definition layer further includes a third virtual opening, the third virtual opening is located between the second virtual opening and the display area in the second direction, the third virtual opening is in communication with at least two adjacent first virtual openings, and the opening shape of the third virtual opening is different from the opening shape of the first virtual opening.

14. A display device comprising: The display panel of any one of claims 1-13.

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