Display panel

Abstract

The application discloses a display panel, which has a display area and a non-display area located at the periphery of the display area, the non-display area comprising a side area and a corner area connecting adjacent side areas, the display panel comprising a pixel definition layer, the pixel definition layer comprising 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 at the periphery of a second virtual pixel opening in the corner area, the plurality of second virtual pixel openings are surrounded between the first virtual pixel opening and the pixel opening, the ink printed in the first virtual pixel opening can increase the concentration of the solvent evaporated at the edge of the corner area, so as to reduce the dry film forming speed of the ink close to the corner area, so as to improve the film forming quality of the light emitting part close to the corner area, thereby the film forming uniformity of the light emitting part of the display area and the uniformity of the brightness of the display panel can be improved.

Description

TECHNICAL FIELD

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

[0002] Organic light emitting diode display technology has become a research hotspot in the field of optoelectronic display technology due to its self-luminescence, wide viewing angle, high contrast, low power consumption, extremely high response speed, ultra-light and thin weight, flexible display, screen curling, strong temperature adaptability, and simple manufacturing process. The method of using inkjet printing technology to prepare corresponding devices has attracted much attention due to its high material utilization rate.

[0003] When preparing a light emitting device using inkjet printing technology, in addition to printing a light emitting material in the display area, a virtual pixel is arranged in the non-display area outside the display area to ensure the film forming uniformity of the display area and the uniformity of the brightness of the light emitting device. However, when the corners of the display panel are rounded, due to the characteristics of the ink, 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 still has the problem of uneven film thickness.

[0004] Therefore, it is necessary to provide a display panel to improve this defect. SUMMARY

[0005] The display panel provided by the embodiments of the present application improves the uniformity of the brightness of the display panel.

[0006] In order to achieve the above-mentioned purpose, according to a first aspect of the present application, a display panel is provided, having a display area and a non-display area located at the periphery of the display area, the non-display area including a plurality of side edge areas and a plurality of corner areas, each of the corner areas being connected between two adjacent side edge areas, the display panel comprising:

[0007] a pixel definition layer including a plurality of pixel openings located in the display area and a plurality of virtual pixel openings located in the non-display area;

[0008] wherein the plurality of virtual pixel openings includes at least a first virtual pixel opening and a plurality of second virtual pixel openings located in the corner area; the first virtual pixel opening extends along the edge of the corner area in a curved manner, and the plurality of second virtual pixel openings are located between the first virtual pixel opening and the pixel opening.

[0009] Optionally, the corner area includes an arc-shaped sub-area, the first virtual pixel opening is located in a part of the arc-shaped sub-area in an arc shape, and has the same curvature as the edge of the arc-shaped sub-area.

[0010] Optionally, the corner region comprises an arc-shaped sub-region, and the corner region is provided with at least two first virtual pixel openings, the at least two first virtual pixel openings comprising a first sub-virtual pixel opening and a second sub-virtual pixel opening located on a side of the first sub-virtual pixel opening away from the display region.

[0011] The first sub-virtual pixel opening is located on a part of the arc-shaped sub-region in a sawtooth shape, and the second sub-virtual pixel opening is located on a part of the arc-shaped sub-region in an arc shape and has the same curvature as an edge of the arc-shaped sub-region.

[0012] Optionally, the display panel comprises a light-emitting layer, the light-emitting layer comprises a first virtual light-emitting part, and the corner region comprises an arc-shaped sub-region.

[0013] The thickness of the part of the first virtual light-emitting part located on the arc-shaped sub-region is less than or equal to the thickness of other parts of the first virtual light-emitting part.

[0014] Optionally, the thickness of the part of the first virtual light-emitting part located on the arc-shaped sub-region gradually decreases from both ends to the middle.

[0015] Optionally, the display panel comprises a first dam located between adjacent virtual pixel openings.

[0016] 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.

[0017] Optionally, the first virtual pixel opening comprises a first opening sub-part, a second opening sub-part and a third opening sub-part connected in sequence, the pixel definition layer comprises a second dam located between adjacent pixel openings, and the sum of the length of the pixel opening in a first direction and the width of the second dam is set as a pixel pitch.

[0018] The ratio of the length of the first opening sub-part in the first direction to the pixel pitch is greater than or equal to 1 and less than or equal to 20.

[0019] The ratio of the length of the third opening sub-part in a second direction to the pixel pitch is greater than or equal to 1 and less than or equal to 20, the first direction is different from the second direction and perpendicular to the thickness direction of the display panel.

[0020] 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.

[0021] Optionally, the plurality of virtual pixel openings comprise a third virtual pixel opening located in the corner region, and the area of the third virtual pixel opening is greater than the area of the second virtual pixel opening.

[0022] 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 first virtual pixel opening towards the blank area of the display area.

[0023] Optionally, the corner area includes an arc-shaped sub-area and a transition sub-area connected between 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.

[0024] The end of the third virtual pixel opening close to the arc-shaped sub-area is flush with the end of the first opening sub-part close to the arc-shaped sub-area, or the end of the third virtual pixel opening close to the arc-shaped sub-area exceeds the end of the first opening sub-part close to the arc-shaped sub-area.

[0025] In the display panel of the embodiments of the present application, at least one first virtual pixel opening is arranged outside the plurality of second virtual pixel openings in the corner area, and the first virtual pixel opening extends along the edge of the corner area, so as 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 evaporated ink in the edge of the corner area in the drying process, so as to reduce the drying speed of the ink close to the corner area, improve the film forming quality of the light emitting part close to the corner area, and thus improve the film forming uniformity of the light emitting part of the display area and the uniformity of the brightness of the display panel.

[0026] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0028] In order to more completely understand the present application and its advantages, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0029] Figure 1 A top view of the display panel provided by the embodiments of the present application;

[0030] Figure 2 An enlarged schematic view of the corner area in the first display panel provided by the embodiments of the present application;

[0031] Figure 3 A first display panel provided for an embodiment of the present application is shown in a cross-sectional view along the A-A' direction in FIG. 1. Figure 2 A first display panel provided for an embodiment of the present application is shown in a cross-sectional view along the A-A' direction in FIG. 1.

[0032] Figure 4 A first display panel provided for an embodiment of the present application is shown in a cross-sectional view along the A-A' direction in FIG. 1. Figure 2 A first display panel provided for an embodiment of the present application is shown in a cross-sectional view along the A-A' direction in FIG. 1.

[0033] Figure 5 A first display panel provided for an embodiment of the present application is shown in a cross-sectional view along the A-A' direction in FIG. 1.

[0034] Figure 6 A first display panel provided for an embodiment of the present application is shown in a cross-sectional view along the A-A' direction in FIG. 1. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present application.

[0036] The present application provides a display panel, the display panel has a display area and a non-display area located at the periphery of 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, the pixel definition layer 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 includes at least a first virtual pixel opening and a plurality of second virtual pixel openings located in the corner area, the first virtual pixel opening extends 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 openings.

[0037] In the embodiments of the present application, by setting at least a first virtual pixel opening at the periphery of the plurality of second virtual pixel openings in the corner area and making the first virtual pixel opening extend along the edge of the corner area, the plurality of second virtual pixel openings are surrounded between the first virtual pixel opening and the pixel openings, the ink printed in the first virtual pixel opening can improve the solvent concentration of the evaporated ink at the edge of the corner area in the drying process, so as to reduce the drying speed of the ink close to the corner area, improve the film forming quality of the light emitting part close to the corner area, and thus improve the film forming uniformity of the light emitting part of the display area and the uniformity of the brightness of the display panel.

[0038] In some embodiments, please refer to Figure 1 , Figure 1A top view of a display panel is provided for embodiments of the present application. The display panel 100 has a display area AA and a non-display area NA located at the periphery of the display area AA. The display area AA is an area for displaying a picture. The display area AA can be provided with a plurality of light emitting devices and a plurality of pixel driving circuits for driving the light emitting devices. The non-display area NA is an area for preventing peripheral circuits and peripheral traces. The peripheral circuits can include a gate driving circuit.

[0039] As shown in Figure 1 , the non-display area NA includes side edge areas NA1 and corner areas NA2 connecting adjacent side edge areas NA1. The side edge areas NA1 are linear. The middle part of the corner areas NA2 is arc-shaped. The part of the corner areas NA2 connecting the side edge areas NA1 is linear.

[0040] In some embodiments, as shown in Figure 1 , the outer contour of the display panel 100 is a rounded rectangular shape. The non-display area NA can include four side edge areas NA1 and four corner areas NA2. Each corner area NA2 is connected between two adjacent side edge areas NA1.

[0041] In actual applications, the number of side edge 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 edge areas NA1 and multiple corner areas NA2 at the same time.

[0042] In combination with Figure 2 and Figure 3 , as shown in Figure 2 , an enlarged schematic view of a corner area in a first display panel is provided for embodiments of the present application. Figure 3 A sectional view of the first display panel along the A-A' direction as shown in Figure 2 is provided for embodiments of the present application. The display panel 100 includes a pixel definition layer 1 and a light emitting layer 2. The pixel definition layer 1 includes a plurality of pixel openings 11 located in the display area AA and a plurality of virtual pixel openings 12 located in the non-display area NA. The pixel openings 11 and the virtual pixel openings 12 both penetrate the pixel definition layer 1 in the thickness direction of the display panel. The light emitting layer 2 includes a plurality of light emitting portions 21 and a plurality of virtual light emitting portions 22. Each light emitting portion 21 is arranged in a corresponding pixel opening 11. Each virtual light emitting portion 22 is arranged in a corresponding virtual pixel opening 12.

[0043] In combination with Figure 1 and Figure 2As shown, the plurality of virtual pixel openings 12 includes at least a first virtual pixel opening 121 and a plurality of second virtual pixel openings 122 located in the corner area NA2. The first virtual pixel opening 121 extends from an end of the corner area NA2 close to an adjacent one of the side areas NA1 to an end of the corner area NA2 close to another adjacent one of the side areas NA1, and encloses the plurality of second virtual pixel openings 122 between the first virtual pixel opening 121 and the pixel openings 11.

[0044] 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 concentration of the solvent of the ink evaporated from the corner area NA2 during the drying process, thereby reducing the drying film-forming speed of the ink close to the corner area in the display area. The ink in the first virtual pixel opening 121 can further increase the concentration of the solvent of the ink evaporated from the edge of the corner area away from the display area during the drying process, thereby further reducing the drying film-forming speed of the ink close to the corner area in the display area. Therefore, the film-forming quality of the light-emitting part close to the corner area can be further improved, and the film-forming uniformity of the light-emitting part in the display area and the uniformity of the brightness of the display panel can be improved.

[0045] In some embodiments, as shown in Figure 1 , the corner area NA2 includes an arc-shaped sub-area NA21 and a transition sub-area NA22 adjacent to the side area NA1 and the arc-shaped sub-area NA21. The transition sub-area NA22 and the side area NA1 adjacent to the transition sub-area NA22 both extend in a straight line, and their extension directions are the same. The outer contour of the arc-shaped sub-area NA21 is arc-shaped.

[0046] As shown in Figure 1 , taking the side sub-area NA1 on the left side of the display area AA as an example, the outer contour of the side sub-area NA1 and the transition sub-area NA22 adjacent to the side sub-area NA1 both extend in a straight line along the second direction Y.

[0047] In some embodiments, as shown in Figure 1 , the non-display area NA includes a plurality of side areas NA1, which includes a first side area NA11 and a second side area NA12 located on the left and right sides of the display area AA, and a third side area NA13 and a fourth side area NA14 located on the top and bottom sides of the display area AA.

[0048] In some embodiments, as shown in Figure 1 and Figure 2The 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.

[0049] In some embodiments, such as Figure 1 The 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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 2As shown in the cross-sectional view along the A-A' direction, no virtual light-emitting part is arranged in the first sub-virtual pixel opening 121a, and a virtual light-emitting part is arranged in the second sub-virtual pixel opening 121b. In the inkjet printing process, ink can be printed in the pixel opening 11, the second sub-virtual pixel opening 121b, and the second virtual pixel opening 122, but not in the first sub-virtual pixel opening 121a. The first sub-virtual pixel opening 121a separates 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 to the second virtual pixel opening 122 and the pixel opening 11 in the display area AA. The ink in the second sub-virtual pixel opening 121b can increase the concentration of solvent of the evaporated ink away from the edge of the display area in the corner area during the drying process, further reducing the drying film-forming speed of the ink near the corner area in the display area, ensuring that the area with uneven ink film formation is limited to the non-display area, thus further improving the film-forming quality of the light-emitting part near the corner area in the display area, thereby improving the film-forming uniformity of the light-emitting part in the display area and the uniformity of the brightness of the display panel.

[0054] In some embodiments, a virtual light-emitting part can be arranged 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 smaller than that 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 that in the second sub-virtual pixel opening 121b. The first sub-virtual pixel opening 121a not only separates the second sub-virtual pixel opening 121b from the virtual pixel opening 122 and the pixel opening 11 to prevent ink in the second sub-virtual pixel opening 121b from overflowing to the virtual pixel opening 122 and the pixel opening 11, but also further increases the concentration of solvent of the evaporated ink away from the edge of the display area in the corner area during the drying process, further reducing the drying film-forming speed of the ink near the corner area in the display area, ensuring that the area with uneven ink film formation is limited to the non-display area, thus further improving the film-forming quality of the light-emitting part near the corner area in the display area, thereby improving the film-forming uniformity of the light-emitting part in the display area and the uniformity of the brightness of the display panel.

[0055] In some embodiments, the first virtual pixel opening 121 is located in the part of the arc-shaped sub-area NA21 that is arc-shaped, and has the same curvature as the edge of the arc-shaped sub-area NA21.

[0056] In some embodiments, in combination 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.

[0057] 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.

[0058] 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.

[0059] 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-portion 1211 in the first direction X is too small, which will make the first opening sub-portion 1211 can accommodate less amount of ink, resulting in poor leveling of the ink in the second opening sub-portion 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-portion 1211 in the first direction X is too large, which will make the first opening sub-portion 1211 can accommodate too much amount of ink, and when inkjet printing, the ink inside the first opening sub-portion 1211 will quickly flow to the second opening sub-portion 1212, resulting in ink overflow.

[0060] The embodiment can ensure good leveling of the ink in the second opening sub-portion 1212 while avoiding ink overflow by limiting the ratio of the first length L1 to the pixel pitch d1 to between 1 and 20.

[0061] In some embodiments, as shown in Figure 2 The third opening sub-portion 1213 has a second length L2 in the second direction Y, and 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-mentioned embodiments, the embodiment can ensure good leveling of the ink in the second opening sub-portion 1212 while avoiding ink overflow by limiting the ratio of the second length L2 to the pixel pitch d1 to between 1 and 20.

[0062] In some embodiments, as shown in Figure 2 The first length L1 of the first opening sub-portion 1211 in the first direction X is equal to the second length L2 of the third opening sub-portion 1213 in the second direction Y, so that the flow rates of the ink flowing from the first opening sub-portion 1211 and the third opening sub-portion 1213 to the second opening sub-portion 1212 are consistent, which not only can improve the leveling of the ink in the second sub-virtual pixel opening 121b, but also can reduce the risk of ink overflow.

[0063] In some embodiments, the thickness of the part of the arc-shaped sub-region NA21 where the first virtual light-emitting portion 221 is located is less than or equal to the thickness of other parts of the first virtual light-emitting portion 221.

[0064] In some embodiments, in combination with Figure 2 and Figure 4 as shown, Figure 4 The first display panel provided by the embodiment of the present application is along Figure 2As shown in the cross-sectional view in the direction of B-B', the plurality of virtual light emitting portions 22 includes a first virtual light emitting portion 221 located in the second sub-virtual pixel opening 121b, the first virtual light emitting portion 221 includes a first virtual light emitting sub-portion 2211 located in the first opening sub-portion 1211 and the third opening sub-portion 1213 and a second virtual light emitting sub-portion 2212 located in the second opening sub-portion 1212, and the thickness of the first virtual light emitting sub-portion 2211 is greater than the thickness of the second virtual light emitting sub-portion 2212.

[0065] It should be noted that, in inkjet printing, ink is only sprayed in the first opening sub-portion 1211 and the third opening sub-portion 1213 of the second sub-virtual pixel opening 121b. Due to the fluidity of the ink, the ink in the first opening sub-portion 1211 and the third opening sub-portion 1213 can flow to the second opening sub-portion 1212. After the ink solidifies into a film, the first virtual light emitting sub-portion 2211 can be formed in the first opening sub-portion 1211 and the third opening sub-portion 1213, and the second virtual light emitting sub-portion 2212 can be formed in the second opening sub-portion 1212. When the amount of ink sprayed in the first opening sub-portion 1211 and the third opening sub-portion 1213 is small, due to the limited fluidity of the ink, the thickness of the ink in the second opening sub-portion 1212 is less than the thickness of the ink in the first opening sub-portion 1211, so that the thickness of the second virtual light emitting sub-portion 2212 formed in the second opening sub-portion 1212 is less than the thickness of the first virtual light emitting sub-portion 2211.

[0066] In some embodiments, the thickness of the first virtual light emitting sub-portion 2211 is equal to the thickness of the second virtual light emitting sub-portion 2212. It should be noted that, in inkjet printing, ink is only sprayed in the first opening sub-portion 1211 and the third opening sub-portion 1213 of the second sub-virtual pixel opening 121b. When the amount of ink sprayed in the first opening sub-portion 1211 and the third opening sub-portion 1213 is large, the thickness of the ink flowing to the second opening sub-portion 1212 can be consistent with the thickness of the ink in the first opening sub-portion 1211 and the third opening sub-portion 1213, so that the thickness of the second virtual light emitting sub-portion 2212 formed in the second opening sub-portion 1212 is equal to the thickness of the first virtual light emitting sub-portion 2211.

[0067] In some embodiments, the thickness of the portion of the first virtual light emitting portion 221 located in the arc-shaped sub-region NA21 gradually decreases from both ends to the middle.

[0068] In combination Figure 2 and Figure 4 As shown, the thickness of the second virtual light emitting sub-portion 2212 is less than the thickness of the first virtual light emitting sub-portion 2211, and the thickness of the second virtual light emitting sub-portion 2212 gradually decreases from one end of the first virtual light emitting sub-portion 2211 to the middle region of the second virtual light emitting sub-portion 2212.

[0069] In some embodiments, the pixel definition layer 1 is configured to define a plurality of pixel openings 11, a plurality of first virtual pixel openings 121, and a plurality of second virtual pixel openings 122. Figures 2 to 4 As shown, the pixel definition layer 1 includes a first dam 14 between the first sub-virtual pixel opening 121a and the second sub-virtual pixel opening 121b, and the first dam 14 can also be between adjacent pixel openings 11 in the second direction Y. The thickness difference between the first virtual light-emitting sub-section 2211 and the second virtual light-emitting sub-section 2212 is less than or equal to the height of the first dam 14, so as to prevent the ink in the second sub-virtual pixel opening 121b from overflowing to the display area AA and causing color mixing.

[0070] In some embodiments, the thickness of the first virtual light-emitting sub-section 2211 is greater than the height of the first dam 14, i.e., the upper surface of the first virtual light-emitting sub-section 2211 is higher than the upper surface of the first dam 14. If the thickness of the second virtual light-emitting sub-section 2212 is thin, the thickness difference between the first virtual light-emitting sub-section 2211 and the second virtual light-emitting sub-section 2212 can be equal to the height of the first dam 14, so as to prevent the ink in the second sub-virtual pixel opening 121b from overflowing to the display area AA and causing color mixing.

[0071] 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 frame sub-area NA1, the fourth virtual pixel opening 124 is in a long rectangular shape, in adjacent frame sub-areas NA1 and corner areas NA2, the fourth virtual pixel opening 124 extends from one end of the frame sub-area NA1 close to one adjacent corner sub-area NA2 to the other end of the frame sub-area NA1 close to the other adjacent corner sub-area NA2, and the plurality of second virtual pixel openings 122 are located on one side of the fourth virtual pixel opening 124 close to the display area AA. The fourth virtual pixel opening 124 is spaced apart from the first virtual pixel opening 121, and the number of the fourth virtual pixel openings 124 is adapted to the number of the first virtual pixel openings 121.

[0072] In the present embodiment, by arranging the fourth virtual pixel opening 124 outside the plurality of second virtual pixel openings 122 in the frame sub-area NA, the uneven area of ink film drying can be ensured to fall in the non-display area NA, so as to ensure the uniformity of the film formation of the light-emitting section 21 in the pixel opening 11 at the edge of the display area.

[0073] In some embodiments, the pixel definition layer 1 is configured to define a plurality of pixel openings 11, a plurality of first virtual pixel openings 121, and a plurality of second virtual pixel openings 122. Figure 1 and Figure 2As shown, the first side edge sub-area NA11 and the second side edge sub-area NA12 are respectively provided with two fourth dummy pixel openings 124, and the two fourth dummy pixel openings 124 are arranged in a spaced manner along a direction from the display area AA to the non-display area NA. The third side edge sub-area NA13 and the fourth side edge sub-area NA14 are respectively provided with three fourth dummy pixel openings 124, and the three fourth dummy pixel openings 124 are arranged in a spaced manner along a direction from the display area AA to the non-display area NA.

[0074] In some embodiments, in combination with Figure 1 and Figure 2 As shown, the plurality of dummy pixel openings 12 includes a third dummy pixel opening 123 located at the corner area NA2, the area of the third dummy pixel opening 123 is greater than the area of the second dummy pixel opening 122, and less than the area of the first dummy pixel opening 121. The third dummy pixel opening 123 is located between the first dummy pixel opening 121 and the second dummy pixel opening 122, and one side of the third dummy pixel opening 123 is close to the blank area BA of the display area AA.

[0075] In combination with Figure 1 and Figure 2 As shown, a second opening sub-part 1212 of the first dummy pixel opening 121 and the second dummy pixel opening 122 enclose a blank area BA, the blank area BA belongs to a part of the arc-shaped sub-area NA21, and the pixel definition layer 1 in the blank area BA is not provided with an opening. The third dummy pixel opening 123 is arranged in a transition sub-area NA22 between the corner area NA2 and the third side edge sub-area NA13, the third dummy pixel opening 123 extends along the first direction X in the transition sub-area NA22, and is in a straight line type, the third dummy pixel opening 123 is parallel to the first opening sub-part 1211 of the first dummy pixel opening 121, and is located on a side of the first opening sub-part 1211 close to the display area AA1, and the third dummy pixel opening 123 has a first side edge 123a, and the first side edge 123a is arranged close to the blank area BA of the display area AA of the first dummy pixel opening 121.

[0076] It should be noted that, since the distance between the first opening sub-portion 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-portion 1213 and the adjacent second virtual pixel opening 122, by arranging the third virtual pixel opening 123 between the first opening sub-portion 1211 of the first sub-virtual pixel opening 121a and the second virtual pixel opening 122, the third virtual pixel opening 123 can be used to fill the gap between the first opening sub-portion 1211 and the second virtual pixel opening 122, so as to ensure that the part of uneven film forming of the light emitting material is limited in the non-display area, so as to improve the uniformity of the film forming of the light emitting material in the display area, thereby the uniformity of the brightness of the display panel can be improved.

[0077] In some embodiments, in combination with Figure 2 As shown in FIG. 6, the third virtual pixel opening 123 is flush with the end of the first opening sub-portion 1211 near the arc-shaped sub-area NA21, so that the third virtual pixel opening 123 can fill the gap between the first opening sub-portion 1211 and the second virtual pixel opening 122, so as to ensure that the part of uneven film forming of the light emitting material is limited in the non-display area, so as to improve the uniformity of the film forming of the light emitting material in the display area, thereby the uniformity of the brightness of the display panel can be improved.

[0078] In some embodiments, the third virtual pixel opening 123 is beyond the end of the first opening sub-portion 1211 near the arc-shaped sub-area NA21, so that the third virtual pixel opening 123 can also fill the gap between the first opening sub-portion 1211 and the second virtual pixel opening 122, so as to ensure that the part of uneven film forming of the light emitting material is limited in the non-display area, so as to improve the uniformity of the film forming of the light emitting material in the display area, thereby the uniformity of the brightness of the display panel can be improved.

[0079] In some embodiments, as Figure 3 As shown in FIG. 7, the display panel further includes an array substrate 3 and an anode layer 4 arranged on the array substrate 3, and 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 arranged at the bottom of a corresponding pixel opening 11, each first virtual anode 42 is arranged at the bottom of a corresponding first virtual pixel opening 121, and each second virtual anode 43 is arranged at the bottom of a corresponding second virtual pixel opening 122.

[0080] In combination with Figure 5 As shown in FIG. 8, Figure 5 FIG. 9 shows a zoomed-in view of the corner area of a second display panel according to an embodiment of the present application, which has the same structure as Figure 2The first display panel shown has substantially the same structure, except that the second opening subpart 1212 of the first sub-virtual pixel opening 121a is in a zigzag shape.

[0081] As shown, the second opening subpart 1212 of the first sub-virtual pixel opening 121a is connected between the first opening subpart 1211 and the third opening subpart 1213, and the second opening subpart 1212 is in a zigzag shape. No virtual light-emitting part or a virtual light-emitting part with a small thickness can be arranged in the first sub-virtual pixel opening 121a. In this way, the second sub-virtual pixel opening 121b can also be isolated from the second virtual pixel opening 122 and the pixel opening 11, and the risk of color mixing can be reduced. Figure 4 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 in the direction in which the display area AA points to the non-display area NA.

[0082] The three virtual pixel openings 121 include a first sub-virtual pixel opening 121a closest to the display area AA 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 in the direction in which the display area AA points to the non-display area NA. No virtual light-emitting part can be arranged in the first sub-virtual pixel opening 121a, and ink can be printed in the two 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 opening 122 and the pixel opening 11, so as to prevent ink overflow from the second sub-virtual pixel openings 121b to the second virtual pixel opening 122 and the pixel opening 11, and reduce the risk of color mixing. The two second sub-virtual pixel openings 121b are used to increase the concentration of the solvent of the ink at the edge of the corner area. In this way, the drying speed of the ink near the corner area can be reduced, the film forming quality of the light-emitting part near the corner area can be improved, and the film forming uniformity of the light-emitting part of the display area and the uniformity of the brightness of the display panel can be improved.

[0083] 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 in the direction in which the display area AA points to the non-display area NA.

[0084] In actual application, the corner area NA2 can be provided with at least two first virtual pixel openings 121, and the at least two first virtual pixel openings 121 can include one first sub-virtual pixel opening 121a and at least one second sub-virtual pixel opening 121b arranged on a side of the first sub-virtual pixel opening 121a away from the display area AA. The number of the second sub-virtual pixel openings 121b can be set according to actual requirements. For example, the side of the first sub-virtual pixel opening 121a away from the display area AA can be provided with one, two or three or more second sub-virtual pixel openings 121b, so as to improve the film forming quality of the light emitting part of the display area close to the corner area, thereby improving the film forming uniformity of the light emitting part of the display area and the brightness uniformity of the display panel.

[0085] According to the display panel provided in the above embodiments of the present application, the embodiments of the present application further provide a display device. Referring to Figure 6 , Figure 6 FIG. 1 is a schematic diagram of a display device provided in the embodiments of the present application. The display device 1000 includes a display panel 100 and a housing 200, and the display panel 100 is arranged on the housing 200. The display panel 100 can be any one of the display panels provided in the above embodiments. The display device provided in the embodiments of the present application can achieve the same technical effects as the display panel provided in any one of the above embodiments, and details are not described herein.

[0086] The embodiments of the present application have the following beneficial effects: The embodiments of the present application provide a display panel having a display area and a non-display area located at the periphery of the display area, and the non-display area includes a side area and a corner area connecting adjacent side areas. The display panel includes a pixel definition layer including a plurality of pixel openings located in the display area and a plurality of virtual pixel openings located in the non-display area. The first virtual pixel opening is arranged at the periphery of the second virtual pixel opening in 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 concentration of the solvent of the ink evaporated at the edge of the corner area, so as to reduce the drying film forming speed of the ink close to the corner area, improve the film forming quality of the light emitting part close to the corner area, thereby improving the film forming uniformity of the light emitting part of the display area and the brightness uniformity of the display panel.

[0087] In the description of the present application, the terms “first”, “second” are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with “first”, “second” can explicitly or implicitly include one or more features. In the description of the present application, the meaning of “plurality” is two or more, unless otherwise specifically limited.

[0088] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0089] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0090] The above are only the preferred embodiments of the present application, and do not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution content of the present application and in accordance with the technical essence of the present application still belongs to the scope of the technical solution of the present 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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