Display panel

Abstract

The invention discloses a display panel which is provided with a display area and a non-display area located on the periphery of the display area, the non-display area comprises side edge areas and corner areas connected with the adjacent side edge areas, and the display panel comprises a pixel definition layer. The pixel definition layer comprises a plurality of pixel openings located in the display area and a plurality of virtual pixel openings located in the non-display area, and first virtual pixel openings are formed in the peripheries of second virtual pixel openings in the corner area, so that the second virtual pixel openings are surrounded between the first virtual pixel openings and the pixel openings. The ink printed in the first virtual pixel opening can improve the concentration of the solvent evaporated at the edge of the corner area, so that the drying film-forming speed of the ink close to the corner area can be reduced, and the film-forming quality of the light-emitting part close to the corner area is improved; therefore, the film forming uniformity of the light-emitting part of the display area and the brightness uniformity of the display panel can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel. Background Technology

[0002] Organic light-emitting diode (OLED) display technology has become a research hotspot in the field of optoelectronic display technology due to its advantages such as self-illumination, wide viewing angle, high contrast, low power consumption, extremely fast response speed, ultra-lightweight and thin design, flexible display, rollable screen, strong temperature adaptability, and simple manufacturing process. The method of fabricating corresponding devices using inkjet printing technology has attracted much attention due to its high material utilization rate.

[0003] When using inkjet printing technology to fabricate light-emitting devices, in addition to printing the light-emitting material in the display area, virtual pixels are also set in the non-display area outside the display area to ensure the uniformity of film formation in the display area and the uniformity of brightness of the light-emitting device. However, when the corners of the display panel are rounded, due to the limitations of ink characteristics, the drying uniformity of the vacuum drying equipment, and the right-angle printing method of the printing equipment, the light-emitting material at the rounded corners of the display area will still have uneven film thickness.

[0004] Therefore, it is necessary to provide a display panel to improve this deficiency. Summary of the Invention

[0005] This application provides a display panel that improves the uniformity of brightness.

[0006] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, having a display area and a non-display area located around the periphery of the display area, the non-display area including a plurality of side areas and a plurality of corner areas, each of the corner areas being connected between two adjacent side areas, the display panel comprising: A pixel definition layer includes multiple pixel openings located in the display area and multiple virtual pixel openings located in the non-display area; The plurality of virtual pixel openings include at least one first virtual pixel opening and a plurality of second virtual pixel openings located in the corner area; the first virtual pixel opening extends curvedly along the edge of the corner area, and the plurality of second virtual pixel openings are located between the first virtual pixel opening and the pixel opening.

[0007] Optionally, the corner area includes an arc-shaped sub-area, wherein the portion of the first virtual pixel opening located in the arc-shaped sub-area is arc-shaped and has the same curvature as the edge of the arc-shaped sub-area.

[0008] Optionally, the corner area includes an arc-shaped sub-area, and the corner area is provided with at least two first virtual pixel openings, the at least two first virtual pixel openings including a first sub-virtual pixel opening and a second sub-virtual pixel opening located on the side of the first sub-virtual pixel opening away from the display area; Wherein, the portion of the first sub-virtual pixel opening located in the arc-shaped sub-region is sawtooth-shaped; the portion of the second sub-virtual pixel opening located in the arc-shaped sub-region is arc-shaped, and has the same curvature as the edge of the arc-shaped sub-region.

[0009] Optionally, the display panel includes a light-emitting layer, the light-emitting layer includes a first virtual light-emitting part, and the corner area includes an arc-shaped sub-area; Wherein, the thickness of the portion of the first virtual light-emitting part located in the arc-shaped sub-region is less than or equal to the thickness of the other portions of the first virtual light-emitting part.

[0010] Optionally, the thickness of the portion of the first virtual light-emitting part located in the arc-shaped sub-region gradually decreases from both ends toward the middle.

[0011] Optionally, the display panel includes a first dam located between adjacent virtual pixel openings; Wherein, the difference between the maximum thickness of the first virtual light-emitting part and the minimum thickness of the first virtual light-emitting part is less than or equal to the height of the first dam.

[0012] Optionally, the first virtual pixel opening includes a first opening sub-part, a second opening sub-part, and a third opening sub-part connected in sequence, and the pixel definition layer includes a second dam located between adjacent pixel openings, wherein the sum of the length of the pixel opening in a first direction and the width of the second dam is set as the pixel spacing; Wherein, the ratio of the length of the first opening sub-part in the first direction to the pixel spacing is greater than or equal to 1 and less than or equal to 20; The ratio of the length of the third opening sub-part in the second direction to the pixel pitch is greater than or equal to 1 and less than or equal to 20, wherein the first direction is different from the second direction and is perpendicular to the thickness direction of the display panel.

[0013] Optionally, the length of the first opening sub-part in the first direction is equal to the length of the third opening sub-part in the second direction.

[0014] Optionally, the plurality of virtual pixel openings includes a third virtual pixel opening located in the corner area, the area of ​​the third virtual pixel opening being larger than the area of ​​the second virtual pixel opening; The third virtual pixel opening is located between the first virtual pixel opening and the second virtual pixel opening, and one side of the third virtual pixel opening is close to the blank area of ​​the first virtual pixel opening facing the display area.

[0015] Optionally, the corner area includes an arc-shaped sub-area and a transition sub-area connecting the arc-shaped sub-area and the side area, and the first virtual pixel opening includes a first opening sub-part located in one of the transition sub-areas; Wherein, the end of the third virtual pixel opening near the arc-shaped sub-region is flush with the end of the first opening sub-region near the arc-shaped sub-region; or, the end of the third virtual pixel opening near the arc-shaped sub-region extends beyond the end of the first opening sub-region near the arc-shaped sub-region.

[0016] In the display panel of this application embodiment, at least one first virtual pixel opening is provided around the periphery of the plurality of second virtual pixel openings in the corner area, and the first virtual pixel opening is bent and extended along the edge of the corner area to surround the plurality of second virtual pixel openings between the first virtual pixel opening and the pixel opening. The ink printed in the first virtual pixel opening can increase the solvent concentration of the ink evaporated at the edge of the corner area during the drying process. This can reduce the drying speed of the ink near the corner area, thereby improving the film formation quality of the light-emitting part near the corner area, and thus improving the film formation uniformity of the light-emitting part in the display area and the brightness uniformity of the display panel.

[0017] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0019] Figure 1 A top view of a display panel provided for an embodiment of this application; Figure 2 An enlarged schematic diagram of the corner area in a first type of display panel provided for embodiments of this application; Figure 3 The first type of display panel provided for embodiments of this application is along Figure 2 The cross-sectional view along the A-A' direction shown; Figure 4 The first type of display panel provided for embodiments of this application is along Figure 2 The cross-sectional view along the B-B' direction shown; Figure 5 An enlarged schematic diagram of the corner area of ​​a second type of display panel provided for an embodiment of this application; Figure 6 A schematic diagram of a display device provided for an embodiment of this application. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0021] This application provides a display panel having a display area and a non-display area located around the display area. The non-display area includes a side area and a corner area connecting adjacent side areas. The display panel includes a pixel definition layer, which includes a plurality of pixel openings located in the display area and a plurality of virtual pixel openings located in the non-display area. The plurality of pixel openings include at least one first virtual pixel opening and a plurality of second virtual pixel openings located in the corner area. The first virtual pixel opening extends curved along the edge of the corner area, and the plurality of second virtual pixel openings are located between the first virtual pixel opening and the pixel opening.

[0022] In the embodiments of this application, by providing at least one first virtual pixel opening around the periphery of the plurality of second virtual pixel openings in the corner area, and by extending the first virtual pixel opening along the edge of the corner area, the plurality of second virtual pixel openings surround the first virtual pixel opening and the pixel opening. The ink printed inside the first virtual pixel opening can increase the solvent concentration of the ink evaporated at the edge of the corner area during the drying process. This can reduce the drying speed of the ink near the corner area, thereby improving the film formation quality of the light-emitting part near the corner area, and thus improving the film formation uniformity of the light-emitting part in the display area and the brightness uniformity of the display panel.

[0023] In some embodiments, please refer to Figure 1 , Figure 1 This is a top view of a display panel provided in an embodiment of this application. The display panel 100 has a display area AA and a non-display area NA located around the display area AA. The display area AA is the area used to display images, and multiple light-emitting devices and multiple pixel driving circuits for driving the light-emitting devices can be disposed within the display area AA. The non-display area NA is the area used to prevent peripheral circuits and peripheral traces from being routed. The peripheral circuits may include gate driving circuits.

[0024] like Figure 1 As shown, the non-display area NA includes a side area NA1 and a corner area NA2 that connects to the adjacent side area NA1. The side area NA1 is straight, the middle part of the corner area NA2 is arc-shaped, and the part of the corner area NA2 that connects to the side area NA1 is straight.

[0025] In some embodiments, such as Figure 1 As shown, the outer contour of the display panel 100 is a rounded rectangle. The non-display area NA may include four side areas NA1 and four corner areas NA2, with each corner area NA2 connected between two adjacent side areas NA1.

[0026] In practical applications, the number of side areas NA1 and corner areas NA2 in the non-display area NA can be set according to the shape of the display panel 100. The non-display area NA can have multiple side areas NA1 and multiple corner areas NA2 at the same time.

[0027] Combination Figure 2 and Figure 3 As shown, Figure 2 An enlarged schematic diagram of the corner area in a first type of display panel provided for embodiments of this application. Figure 3 The first type of display panel provided for embodiments of this application is along Figure 2 The cross-sectional view along the A-A' direction shown indicates that the display panel 100 includes a pixel definition layer 1 and a light-emitting layer 2. The pixel definition layer 1 includes multiple pixel openings 11 located in the display area AA and multiple virtual pixel openings 12 located in the non-display area NA. Both the pixel openings 11 and the virtual pixel openings 12 penetrate the pixel definition layer 1 in the thickness direction of the display panel. The light-emitting layer 2 includes multiple light-emitting parts 21 and multiple virtual light-emitting parts 22. Each light-emitting part 21 is disposed in a corresponding pixel opening 11, and each virtual light-emitting part 22 is disposed in a corresponding virtual pixel opening 12.

[0028] Combination Figure 1 and Figure 2 As shown, the plurality of virtual pixel openings 12 include at least one first virtual pixel opening 121 and a plurality of second virtual pixel openings 122 located in the corner region NA2. The first virtual pixel opening 121 extends from one end of the corner region NA2 near the adjacent side region NA1 to one end of the corner region NA2 near the adjacent other side region NA1, and surrounds the plurality of second virtual pixel openings 122 between the first virtual pixel opening 121 and the pixel opening 11.

[0029] In the inkjet printing process, ink can be printed in both the first virtual pixel opening 121 and the second virtual pixel opening 122. The ink in the second virtual pixel opening 122 can increase the solvent concentration of the ink evaporated in the corner area NA2 during the drying process, thereby reducing the drying film formation rate of the ink near the corner area of ​​the display area. The ink in the first virtual pixel opening 121 can further increase the solvent concentration of the ink evaporated at the edge of the corner area away from the display area during the drying process, thereby further reducing the drying film formation rate of the ink near the corner area of ​​the display area. Therefore, the film formation quality of the light-emitting part near the corner area can be further improved, thereby improving the film formation uniformity of the light-emitting part of the display area and the brightness uniformity of the display panel.

[0030] In some embodiments, please refer to Figure 1 The corner region NA2 includes the arc-shaped sub-region NA21 and the transition sub-region NA22 adjacent to the side region NA1 and the arc-shaped sub-region NA21. The outer contours of the transition sub-region NA22 and the side region NA1 adjacent to the transition sub-region NA22 both extend in a straight line and in the same direction. The outer contour of the arc-shaped sub-region NA21 is arc-shaped.

[0031] like Figure 1 As shown, taking the side sub-area NA1 on the left side of the display area AA as an example, the outer contours of the side sub-area NA1 and the transition sub-area NA22 connected above are both straight lines and extend along the second direction Y.

[0032] In some embodiments, such as Figure 1 As shown, the non-display area NA includes multiple side areas NA1, which include the first side area NA11 and the second side area NA12 located on the left and right sides of the display area AA, and the third side area NA13 and the fourth side area NA14 located on the top and bottom sides of the display area AA.

[0033] In some implementations, please refer to Figure 1 and Figure 2 The first virtual pixel opening 121 includes a first opening sub-region 1211, a second opening sub-region 1212, and a third opening sub-region 1213. The first opening sub-region 1211 is located in a transition sub-region NA22 adjacent to the arc-shaped sub-region NA21, and extends linearly along a first direction X. The second opening sub-region 1212 is located in the arc-shaped sub-region NA21, and is non-linear. The third opening sub-region 1213 is located in another transition sub-region NA22 adjacent to the arc-shaped sub-region NA21, and extends linearly along a second direction Y.

[0034] In some embodiments, such as Figure 1The first direction X and the second direction Y are different. The first direction X and the second direction Y can be perpendicular, or they can be set at an acute or obtuse angle.

[0035] like Figure 2 As shown, the two ends of the second opening sub-part 1212 are connected to the first opening sub-part 1211 and the third opening sub-part 1213 respectively to form a continuous elongated opening. This allows for the holding of more ink during the inkjet printing process, thus ensuring that areas with uneven ink film formation are confined to the non-display area. This improves the uniformity of the film formation of the light-emitting part in the display area, thereby enhancing the uniformity of the brightness of the display panel.

[0036] In some examples, the corner area NA2 is provided with at least two first virtual pixel openings 121, which are spaced apart along the direction from the display area NA to the non-display area NA.

[0037] Please see Figure 1 and Figure 2 Taking a corner area NA2 of the non-display area NA as an example, the corner area NA2 is provided with two first virtual pixel openings 121, which are spaced apart along the direction from the display area AA to the non-display area NA. The two first virtual pixel openings 121 include a first sub-virtual pixel opening 121a that is closest to the display area AA and a second sub-virtual pixel opening 121b that is located on the side of the first sub-virtual pixel opening 121a away from the display area AA.

[0038] In some embodiments, combined with Figure 2 and Figure 3 As shown, Figure 3 The first type of display panel provided for embodiments of this application is along Figure 2The cross-sectional view along the A-A' direction shows that the first sub-virtual pixel opening 121a does not have a virtual light-emitting part, while the second sub-virtual pixel opening 121b has a virtual light-emitting part. In the inkjet printing process, ink can be printed onto pixel opening 11, the second sub-virtual pixel opening 121b, and the second virtual pixel opening 122, but not onto the first sub-virtual pixel opening 121a. The first sub-virtual pixel opening 121a isolates the second sub-virtual pixel opening 121b from the second virtual pixel opening 122 and the pixel opening 11, preventing ink in the second sub-virtual pixel opening 121b from overflowing into the second virtual pixel opening 122 and the pixel opening 11 of the display area AA. The ink within the second sub-virtual pixel opening 121b can increase the solvent concentration of the ink evaporating at the edge of the corner area away from the display area during the drying process, thereby further reducing the drying film formation speed of the ink near the corner area of ​​the display area. This ensures that the area of ​​uneven ink film formation is limited to the non-display area, thus further improving the film formation quality of the light-emitting part near the corner area in the display area, thereby improving the film formation uniformity of the light-emitting part in the display area and the brightness uniformity of the display panel.

[0039] In some embodiments, a virtual light-emitting part may be provided in both the first sub-virtual pixel opening 121a and the second sub-virtual pixel opening 121b, and the thickness of the virtual light-emitting part in the first sub-virtual pixel opening 121a is less than the thickness of the virtual light-emitting part in the second sub-virtual pixel opening 121b. In the inkjet printing process, the amount of ink printed in the first sub-virtual pixel opening 121a can be less than the amount of ink printed in the second sub-virtual pixel opening 121b. The first sub-virtual pixel opening 121a can not only be used to isolate the second sub-virtual pixel opening 121b from the virtual pixel opening 122 and the pixel opening 11 to prevent the ink in the second sub-virtual pixel opening 121b from overflowing into the virtual pixel opening 122 and the pixel opening 11, but also further increase the concentration of solvent in the ink evaporated at the edge of the corner area away from the display area during the drying process, so as to further reduce the drying film formation speed of the ink near the corner area of ​​the display area, and ensure that the area of ​​uneven ink film formation is limited to the non-display area. Therefore, the film formation quality of the light-emitting part near the corner area in the display area can be further improved, thereby improving the film formation uniformity of the light-emitting part in the display area and the brightness uniformity of the display panel.

[0040] In some embodiments, the portion of the first virtual pixel opening 121 located in the arc-shaped sub-region NA21 is arc-shaped and has the same curvature as the edge of the arc-shaped sub-region NA21.

[0041] In some embodiments, combined with Figure 1 and Figure 2As shown, the second opening sub-parts 1212 of both the first sub-virtual pixel opening 121a and the second sub-virtual pixel opening 121b are arc-shaped, and the curvature of the second opening sub-parts 1212 is the same as the curvature of the edge of the arc-shaped sub-region NA21. By making the curvature of the second opening sub-parts 1212 of the first virtual pixel opening 121 consistent with the curvature of the outer edge of the arc-shaped sub-region NA21, not only can the display panel have a smaller bezel width in the corner area NA2, but it can also facilitate the cutting and manufacturing of the display panel and improve the production efficiency of the display panel.

[0042] In some embodiments, the minimum distance between the first sub-virtual pixel opening 121a and the adjacent second virtual pixel opening 122 is greater than or equal to 12 micrometers and less than or equal to 100 micrometers. For example, the minimum distance between the first sub-virtual pixel opening 121a and the adjacent second virtual pixel opening 122 can be 12 micrometers, 15 micrometers, 18 micrometers, 20 micrometers, 25 micrometers, 30 micrometers, 50 micrometers, 70 micrometers, 90 micrometers, or 100 micrometers, etc. It should be noted that if the distance between the first sub-virtual pixel opening 121a and the adjacent second virtual pixel opening 122 is too small, due to insufficient inkjet printing precision, ink will be printed into the area between the first sub-virtual pixel opening 121a and the second virtual pixel opening 122, causing ink overflow and easily leading to color mixing problems; if the distance between the first sub-virtual pixel opening 121a and the adjacent second virtual pixel opening 122 is too large, it will increase the width of the corner area NA2, resulting in an increase in the bezel width of the display panel. This embodiment limits the minimum distance between the first sub-virtual pixel opening 121a and the adjacent second virtual pixel opening 122 to between 12 micrometers and 100 micrometers. This can achieve a narrow bezel while reducing the difficulty of inkjet printing and the risk of color mixing, thereby improving production yield and reducing production costs.

[0043] In some embodiments, such as Figure 2 As shown, the pixel definition layer 1 includes a second dam 13 located between pixel openings 11 of adjacent light-emitting parts 21 of the same color. The second dam 13 can also be disposed between the light-emitting part 21 and the virtual light-emitting part 22. The sum of the third length L3 of the pixel opening 11 in the first direction X and the first width d2 of the second dam 13 is set as the pixel pitch d1. The first opening sub-part 1211 has a first length L1 in the first direction X. The ratio of the first length L1 to the pixel pitch d1 is greater than or equal to 1 and less than or equal to 20. For example, the ratio of the first length L1 to the pixel pitch d1 can be 1, 3, 5, 7, 9, 10, 12, 14, 15, 16, 18, or 20, etc.

[0044] It should be noted that if the ratio of the first length L1 to the pixel pitch d1 is too small, it means that the length of the first opening sub-part 1211 in the first direction X is too small. This will result in the first opening sub-part 1211 being able to hold less ink, leading to poor ink leveling in the second opening sub-part 1212. If the ratio of the first length L1 to the pixel pitch d1 is too large, it means that the length of the first opening sub-part 1211 in the first direction X is too large. This will result in the first opening sub-part 1211 being able to hold too much ink. During inkjet printing, the ink inside the first opening sub-part 1211 will quickly flow to the second opening sub-part 1212, causing ink overflow.

[0045] This embodiment limits the ratio of the first length L1 to the pixel pitch d1 to between 1 and 20, which can ensure good ink leveling in the second opening sub-section 1212 while preventing ink overflow.

[0046] In some embodiments, such as Figure 2 As shown, the third opening sub-portion 1213 has a second length L2 in the second direction Y. The ratio of the second length L2 to the pixel pitch d1 is greater than or equal to 1 and less than or equal to 20. For example, the ratio of the second length L2 to the pixel pitch d1 can be 1, 3, 5, 7, 9, 10, 12, 14, 15, 16, 18, or 20, etc. Based on the same principle as the above embodiment, this embodiment, by limiting the ratio of the second length L2 to the pixel pitch d1 to between 1 and 20, can ensure good ink leveling within the second opening sub-portion 1212 while preventing ink overflow.

[0047] In some embodiments, such as Figure 2 As shown, the first length L1 of the first opening sub-part 1211 in the first direction X is equal to the second length L2 of the third opening sub-part 1213 in the second direction Y. This makes the flow rate of ink from the first opening sub-part 1211 and the third opening sub-part 1213 to the second opening sub-part 1212 consistent, which can not only improve the leveling of ink in the second sub-virtual pixel opening 121b, but also reduce the risk of ink overflow.

[0048] In some embodiments, the thickness of the portion of the first virtual light-emitting part 221 located in the arc-shaped sub-region NA21 is less than or equal to the thickness of the other portions of the first virtual light-emitting part 221.

[0049] In some embodiments, combined with Figure 2 and Figure 4 As shown, Figure 4 The first type of display panel provided for embodiments of this application is along Figure 2The cross-sectional view along the B-B' direction shown shows that the multiple virtual light-emitting parts 22 include a first virtual light-emitting part 221 located in the second sub-virtual pixel opening 121b. The first virtual light-emitting part 221 includes a first virtual light-emitting part 2211 located in the first opening sub-part 1211 and the third opening sub-part 1213 and a second virtual light-emitting part 2212 located in the second opening sub-part 1212. The thickness of the first virtual light-emitting part 2211 is greater than the thickness of the second virtual light-emitting part 2212.

[0050] It should be noted that during inkjet printing, ink is only sprayed into the first opening sub-section 1211 and the third opening sub-section 1213 of the second sub-virtual pixel opening 121b. Due to the fluidity of ink, the ink in the first opening sub-section 1211 and the third opening sub-section 1213 can flow to the second opening sub-section 1212. After the ink cures into a film, a first virtual light-emitting sub-section 2211 can be formed in the first opening sub-section 1211 and the third opening sub-section 1213, and a second virtual light-emitting sub-section 2212 can be formed in the second opening sub-section 1212. When the amount of ink sprayed into the first opening sub-section 1211 and the third opening sub-section 1213 is small, due to the limited fluidity of ink, the thickness of the ink in the second opening sub-section 1212 is less than the thickness of the ink in the first opening sub-section 1211, resulting in the thickness of the second virtual light-emitting sub-section 2212 formed in the second opening sub-section 1212 being less than the thickness of the first virtual light-emitting sub-section 2211.

[0051] In some embodiments, the thickness of the first virtual light-emitting sub-part 2211 is equal to the thickness of the second virtual light-emitting sub-part 2212. It should be noted that during inkjet printing, ink is only sprayed into the first opening sub-part 1211 and the third opening sub-part 1213 of the second sub-virtual pixel opening 121b. When the amount of ink sprayed into the first opening sub-part 1211 and the third opening sub-part 1213 is relatively large, the thickness of the ink flowing to the second opening sub-part 1212 can be consistent with the thickness of the ink in the first opening sub-part 1211 and the third opening sub-part 1213, so that the thickness of the second virtual light-emitting sub-part 2212 formed in the second opening sub-part 1212 is equal to the thickness of the first virtual light-emitting sub-part 2211.

[0052] In some embodiments, the thickness of the portion of the first virtual light-emitting part 221 located in the arc-shaped sub-region NA21 gradually decreases from both ends toward the middle.

[0053] Combination Figure 2 and Figure 4 As shown, the thickness of the second virtual light-emitting sub-part 2212 is less than the thickness of the first virtual light-emitting sub-part 2211, and the thickness of the second virtual light-emitting sub-part 2212 gradually decreases from one end of the first virtual light-emitting sub-part 2211 to the middle region of the second virtual light-emitting sub-part 2212.

[0054] In some embodiments, combined with Figures 2 to 4 As shown, the pixel definition layer 1 includes a first dam 14, which is located between the first sub-virtual pixel opening 121a and the second sub-virtual pixel opening 121b. The first dam 14 can also be located between adjacent pixel openings 11 in the second direction Y. The thickness difference between the first virtual light-emitting sub-part 2211 and the second virtual light-emitting sub-part 2212 is less than or equal to the height of the first dam 14. This can prevent excessive ink in the second sub-virtual pixel opening 121b from overflowing into the display area AA and causing color mixing.

[0055] In some embodiments, the thickness of the first virtual light-emitting sub-part 2211 is greater than the height of the first dam 14, that is, the upper surface of the first virtual light-emitting sub-part 2211 is higher than the upper surface of the first dam 14. If the thickness of the second virtual light-emitting sub-part 2212 is thinner, the difference in thickness between the first virtual light-emitting sub-part 2211 and the second virtual light-emitting sub-part 2212 can be equal to the height of the first dam 14. In this way, it is also possible to prevent excessive ink in the second sub-virtual pixel opening 121b from overflowing into the display area AA and causing color mixing.

[0056] In some embodiments, the plurality of virtual pixel openings 12 further includes a fourth virtual pixel opening 124. The fourth virtual pixel opening 124 is disposed in the border sub-region NA1 and is elongated rectangular in shape. In adjacent border sub-regions NA1 and corner sub-regions NA2, the fourth virtual pixel opening 124 extends from one end of the border sub-region NA1 near one of the adjacent corner sub-regions NA2 to the other end of the border sub-region NA1 near the other adjacent corner sub-region NA2. A plurality of second virtual pixel openings 122 are located on the side of the fourth virtual pixel opening 124 near the display area AA. The fourth virtual pixel opening 124 is spaced apart from the first virtual pixel opening 121, and the number of fourth virtual pixel openings 124 is adapted to the number of first virtual pixel openings 121.

[0057] In this embodiment, by providing a fourth virtual pixel opening 124 outside the plurality of second virtual pixel openings 122 in the border sub-region NA, it can be ensured that the uneven area of ​​ink film drying falls on the non-display area NA, thereby ensuring the uniformity of film formation of the light-emitting part 21 in the pixel opening 11 at the edge of the display area.

[0058] In some embodiments, combined with Figure 1 and Figure 2As shown, the first side sub-region NA11 and the second side sub-region NA12 are each provided with two fourth virtual pixel openings 124, which are spaced apart along the direction from the display area AA to the non-display area NA. The third side sub-region NA13 and the fourth side sub-region NA14 are each provided with three fourth virtual pixel openings 124, which are spaced apart along the direction from the display area AA to the non-display area NA.

[0059] In some embodiments, combined with Figure 1 and Figure 2 As shown, the plurality of virtual pixel openings 12 include a third virtual pixel opening 123 located in the corner area NA2. The area of ​​the third virtual pixel opening 123 is larger than the area of ​​the second virtual pixel opening 122 and smaller than the area of ​​the first virtual pixel opening 121. The third virtual pixel opening 123 is located between the first virtual pixel opening 121 and the second virtual pixel opening 122, and one side of the third virtual pixel opening 123 is close to the blank area BA of the first virtual pixel opening 121 facing the display area AA.

[0060] Combination Figure 1 and Figure 2 As shown, a blank area BA is formed by the second opening sub-part 1212 of the first virtual pixel opening 121 and the second virtual pixel opening 122. The blank area BA is part of the arc-shaped sub-region NA21, and the pixel definition layer 1 within the blank area BA does not have an opening. The third virtual pixel opening 123 is disposed in the transition sub-region NA22 between the corner region NA2 and the third side sub-region NA13. The third virtual pixel opening 123 extends along the first direction X in the transition sub-region NA22 and is linear. The third virtual pixel opening 123 is parallel to the first opening sub-part 1211 of the first virtual pixel opening 121 and is located on the side of the first opening sub-part 1211 closer to the display area AA1. The third virtual pixel opening 123 has a first side 123a, which is disposed near the blank area BA of the first virtual pixel opening 121 facing the display area AA.

[0061] It should be noted that, since the distance between the first opening sub-part 1211 of the first sub-virtual pixel opening 121a and the adjacent second virtual pixel opening 122 is greater than the distance between the third opening sub-part 1213 and the adjacent second virtual pixel opening 122, by setting the third virtual pixel opening 123 between the first opening sub-part 1211 and the second virtual pixel opening 122 of the first sub-virtual pixel opening 121a, the gap between the first opening sub-part 1211 and the second virtual pixel opening 122 can be filled by the third virtual pixel opening 123, so as to ensure that the uneven part of the light-emitting material film is confined to the non-display area, thereby improving the uniformity of the light-emitting material film in the display area and thus improving the uniformity of the brightness of the display panel.

[0062] In some embodiments, combined with Figure 2 As shown, the end of the third virtual pixel opening 123 near the arc-shaped sub-region NA21 is flush with the end of the first opening sub-region 1211 near the arc-shaped sub-region NA21. This ensures that the third virtual pixel opening 123 can fill the gap between the first opening sub-region 1211 and the second virtual pixel opening 122, thereby ensuring that the uneven portion of the light-emitting material film is confined to the non-display area, improving the uniformity of the light-emitting material film in the display area, and thus improving the uniformity of the brightness of the display panel.

[0063] In some embodiments, the end of the third virtual pixel opening 123 near the arc-shaped sub-region NA21 extends beyond the end of the first opening sub-region 1211 near the arc-shaped sub-region NA21. This also ensures that the third virtual pixel opening 123 can fill the gap between the first opening sub-region 1211 and the second virtual pixel opening 122, thereby ensuring that the uneven portion of the light-emitting material film is confined to the non-display area, thus improving the uniformity of the light-emitting material film in the display area and improving the uniformity of the brightness of the display panel.

[0064] In some embodiments, such as Figure 3 As shown, the display panel also includes an array substrate 3 and an anode layer 4 disposed on the array substrate 3. The anode layer 4 includes a first anode 41, a first virtual anode 42 and a second virtual anode 43. Each first anode 41 is disposed at the bottom of the corresponding pixel opening 11, each first virtual anode 42 is disposed at the bottom of the corresponding first virtual pixel opening 121, and each second virtual anode 43 is disposed at the bottom of the corresponding second virtual pixel opening 122.

[0065] Combination Figure 5 As shown, Figure 5 An enlarged schematic diagram of the corner area of ​​a second type of display panel provided in an embodiment of this application, the structure of which is similar to... Figure 2The structure of the first type of display panel shown is roughly the same, except that the second opening sub-part 1212 of the first sub-virtual pixel opening 121a is serrated.

[0066] like Figure 4 As shown, the second opening sub-part 1212 of the first sub-virtual pixel opening 121a is connected between the first opening sub-part 1211 and the third opening sub-part 1213. The second opening sub-part 1212 is serrated. The first sub-virtual pixel opening 121a may not have a virtual light-emitting part or may have a thinner virtual light-emitting part. This can also isolate the second sub-virtual pixel opening 121b from the second virtual pixel opening 122 and the pixel opening 11, reducing the risk of color mixing.

[0067] In some embodiments, the corner area NA2 is provided with three first virtual pixel openings 121, and the three virtual pixel openings 121 are arranged at intervals along the direction from the display area AA to the non-display area NA.

[0068] The three virtual pixel openings 121 include a first sub-virtual pixel opening 121a that is closest to each other, and two second sub-virtual pixel openings 121b located on the side of the first sub-virtual pixel opening 121a away from the display area AA. The two second sub-virtual pixel openings 121b are arranged at intervals along the direction from the display area AA to the non-display area NA. The first sub-virtual pixel opening 121a may not contain a virtual light-emitting element, while ink can be printed in both second sub-virtual pixel openings 121b. In the inkjet printing process, the first sub-virtual pixel opening 121a is used to isolate the second sub-virtual pixel openings 121b from the second virtual pixel openings 122 and 11, preventing ink from overflowing from the second virtual pixel openings 121b into the second virtual pixel openings 122 and 11, thus reducing the risk of color mixing. The two second sub-virtual pixel openings 121b are used to increase the solvent concentration of the ink at the edge of the corner area, which can reduce the drying speed of the ink near the corner area, thereby improving the film formation quality of the light-emitting part near the corner area, and thus improving the film formation uniformity of the light-emitting part in the display area and the brightness uniformity of the display panel.

[0069] In practical applications, the corner area NA2 can be provided with at least two first virtual pixel openings 121. The at least two first virtual pixel openings 121 can include a first sub-virtual pixel opening 121a and at least one second sub-virtual pixel opening 121b disposed on the side of the first sub-virtual pixel opening 121a away from the display area AA. The number of second sub-virtual pixel openings 121b can be set according to actual needs. For example, one, two, three or more second sub-virtual pixel openings 121b can be provided on the side of the first sub-virtual pixel opening 121a away from the display area AA. This can improve the film formation quality of the light-emitting part near the corner area of ​​the display area, thereby improving the film formation uniformity of the light-emitting part of the display area and the brightness uniformity of the display panel.

[0070] Based on the display panel provided in the above embodiments of this application, embodiments of this application also provide a display device. Please refer to [link to relevant documentation]. Figure 6 , Figure 6 This is a schematic diagram of a display device provided in an embodiment of this application. The display device 1000 includes a display panel 100 and a housing 200, with the display panel 100 disposed on the housing 200. The display panel 100 can be any of the display panels provided in the above embodiments. The display device provided in the embodiments of this application can achieve the same technical effects as the display panels provided in any of the above embodiments, and will not be described in detail here.

[0071] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display panel having a display area and a non-display area located around the display area. The non-display area includes a side area and a corner area connecting adjacent side areas. The display panel includes a pixel definition layer, which includes a plurality of pixel openings located in the display area and a plurality of virtual pixel openings located in the non-display area. By setting a first virtual pixel opening around the second virtual pixel opening in the corner area, the plurality of second virtual pixel openings surround the first virtual pixel opening and the pixel opening. The ink printed in the first virtual pixel opening can increase the solvent concentration of the ink evaporating at the edge of the corner area. This can reduce the drying film formation rate of the ink near the corner area, thereby improving the film formation quality of the light-emitting part near the corner area. This can improve the film formation uniformity of the light-emitting part in the display area and the brightness uniformity of the display panel.

[0072] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0073] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0074] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0075] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, The display panel includes a display area and a non-display area located around the display area. The non-display area includes multiple side areas and multiple corner areas, with each corner area connecting two adjacent side areas. A pixel definition layer includes multiple pixel openings located in the display area and multiple virtual pixel openings located in the non-display area; The plurality of virtual pixel openings include at least one first virtual pixel opening and a plurality of second virtual pixel openings located in the corner area; the first virtual pixel opening extends curvedly along the edge of the corner area, and the plurality of second virtual pixel openings are located between the first virtual pixel opening and the pixel opening.

2. The display panel as described in claim 1, characterized in that, The corner area includes an arc-shaped sub-area, and the portion of the first virtual pixel opening located in the arc-shaped sub-area is arc-shaped and has the same curvature as the edge of the arc-shaped sub-area.

3. The display panel as described in claim 1, characterized in that, The corner area includes an arc-shaped sub-area, and the corner area is provided with at least two first virtual pixel openings. The at least two first virtual pixel openings include a first sub-virtual pixel opening and a second sub-virtual pixel opening located on the side of the first sub-virtual pixel opening away from the display area. Wherein, the portion of the first sub-virtual pixel opening located in the arc-shaped sub-region is sawtooth-shaped; the portion of the second sub-virtual pixel opening located in the arc-shaped sub-region is arc-shaped, and has the same curvature as the edge of the arc-shaped sub-region.

4. The display panel as described in any one of claims 1 to 3, characterized in that, The display panel includes a light-emitting layer, the light-emitting layer includes a first virtual light-emitting part, and the corner area includes an arc-shaped sub-area; Wherein, the thickness of the portion of the first virtual light-emitting part located in the arc-shaped sub-region is less than or equal to the thickness of the other portions of the first virtual light-emitting part.

5. The display panel as described in claim 4, characterized in that, The thickness of the portion of the first virtual light-emitting part located in the arc-shaped sub-region gradually decreases from both ends toward the middle.

6. The display panel as described in claim 4, characterized in that, The display panel includes a first dam located between adjacent virtual pixel openings; Wherein, the difference between the maximum thickness of the first virtual light-emitting part and the minimum thickness of the first virtual light-emitting part is less than or equal to the height of the first dam.

7. The display panel as described in any one of claims 1 to 3, characterized in that, The first virtual pixel opening includes a first opening sub-part, a second opening sub-part, and a third opening sub-part connected in sequence. The pixel definition layer includes a second dam located between adjacent pixel openings. The sum of the length of the pixel opening in a first direction and the width of the second dam is set as the pixel spacing. Wherein, the ratio of the length of the first opening sub-part in the first direction to the pixel spacing is greater than or equal to 1 and less than or equal to 20; The ratio of the length of the third opening sub-part in the second direction to the pixel pitch is greater than or equal to 1 and less than or equal to 20, wherein the first direction is different from the second direction and is perpendicular to the thickness direction of the display panel.

8. The display panel as described in claim 7, characterized in that, The length of the first opening sub-part in the first direction is equal to the length of the third opening sub-part in the second direction.

9. The display panel as described in any one of claims 1 to 3, characterized in that, The plurality of virtual pixel openings includes a third virtual pixel opening located in the corner region, the area of ​​which is larger than the area of ​​the second virtual pixel opening; The third virtual pixel opening is located between the first virtual pixel opening and the second virtual pixel opening, and one side of the third virtual pixel opening is close to the blank area of ​​the first virtual pixel opening facing the display area.

10. The display panel as claimed in claim 9, characterized in that, The corner area includes an arc-shaped sub-area and a transition sub-area connecting the arc-shaped sub-area and the side area, and the first virtual pixel opening includes a first opening sub-part located in one of the transition sub-areas; Wherein, the end of the third virtual pixel opening near the arc-shaped sub-region is flush with the end of the first opening sub-region near the arc-shaped sub-region; or, the end of the third virtual pixel opening near the arc-shaped sub-region extends beyond the end of the first opening sub-region near the arc-shaped sub-region.

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