Display panel and display device

Abstract

The invention provides a display panel and a display device, and the display panel comprises an array substrate which comprises a plurality of pixel driving circuits; the pixel definition layer is arranged on the array substrate and is provided with a plurality of openings; the plurality of light-emitting devices are arranged on the array substrate, each light-emitting device comprises a first electrode, a light-emitting part located on the first electrode and a second electrode located on the light-emitting part, the first electrode is electrically connected to the corresponding pixel driving circuit and is exposed to the corresponding opening, and the second electrode is electrically connected to the corresponding pixel driving circuit and is exposed to the corresponding opening. The light-emitting part is positioned in the opening; wherein at least two light emitting devices with the same light emitting color are exposed to the same opening, and are electrically connected to different pixel driving circuits. According to the display panel, the plurality of light emitting devices are arranged in the opening of the pixel definition layer, and the plurality of light emitting devices are electrically connected to different pixel driving circuits, so that the mura problem can be eliminated on the premise that the display panel has high PPI.

Description

[0001] This divisional application is a divisional application based on the Chinese patent application with application number 202210697548.0, application date June 20, 2022, and invention name “Display panel and display device”. Technical Field

[0002] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] At present, organic light-emitting diode (OLED) devices have the characteristics of self-luminescence, wide viewing angle, high contrast, fast response speed, and light weight, and have become the main trend of display technology. Compared with the use of Fine Metal Mask and vacuum evaporation to make OLED devices, inkjet printing technology has attracted much attention due to its precise alignment, no need for Fine Metal Mask, and material utilization rate can reach 95%, becoming the mainstream trend in the production of large-size OLED devices in the future.

[0004] The pixel arrangement structure of an organic light-emitting diode is usually composed of multiple pixels, each of which contains a red (R) sub-pixel, a green (G) sub-pixel, and a blue (B) sub-pixel. The R, G, and B sub-pixels are arranged in a circular pattern to form a matrix. Inkjet printing is to print ink to a specific sub-pixel through a nozzle. However, the physical hardware differences between the nozzles themselves will cause the volume of the ink droplets ejected by each nozzle to be different, so there will be volume differences between the sub-pixels, resulting in mura problems.

[0005] According to theoretical calculations and actual experimental results, setting the number of nozzles used for each sub-pixel printing to 4 or more can disperse the error and eliminate the mura problem. Figure 1 As shown (where 10 is the nozzle, 20 is the pixel definition layer, and 30 is the opening on the pixel definition layer), there is a gap between the nozzles, and the minimum gap that can be achieved is 21.167um, and the gap length of the four nozzles is 63.501um. At the same time, the ink droplets ejected from the nozzles themselves must have a deviation in position accuracy. The minimum deviation that can be achieved is ±20um. In order to eliminate the mura problem, the minimum length of the sub-pixel is 103.5um, and in the mass production process, in order to prevent the problem of being unable to print due to nozzle clogging during production, it is necessary to ensure that there are two spare nozzles in each sub-pixel. Therefore, solving the mura problem will also lead to an increase in the PPI (Pixels Per Inch, pixel density unit) of the display panel, thereby deteriorating the display effect. Summary of the invention

[0006] An embodiment of the present invention provides a display panel and a display device to improve the generated mura problem on the premise that the prepared display panel has a high PPI.

[0007] The present invention provides a display panel, which includes:

[0008] An array substrate including a plurality of pixel driving circuits;

[0009] A pixel definition layer disposed on the array substrate and provided with a plurality of openings; and

[0010] A plurality of light-emitting devices disposed on the array substrate, each light-emitting device including a first electrode, a light-emitting portion located on the first electrode, and a second electrode located on the light-emitting portion, the first electrode being electrically connected to the corresponding pixel driving circuit and exposed to the corresponding opening, and the light-emitting portion being located within the opening;

[0011] Wherein, at least two of the light-emitting devices having the same emission color are exposed to the same opening and are electrically connected to different pixel driving circuits.

[0012] In some embodiments of the present invention, the plurality of openings include a first opening, a second opening, and a third opening, and the plurality of light-emitting devices include a first group, the first group including a first light-emitting device and a second light-emitting device having a red emission color, a third light-emitting device and a fourth light-emitting device having a green emission color, and a fifth light-emitting device and a sixth light-emitting device having a blue emission color. Wherein, the two first electrodes of the first light-emitting device and the second light-emitting device are exposed to the first opening, the two first electrodes of the third light-emitting device and the fourth light-emitting device are exposed to the second opening, and the two first electrodes of the fifth light-emitting device and the sixth light-emitting device are exposed to the third opening.

[0013] In some embodiments of the present invention, the second opening and the third opening are arranged along a first direction, the first opening is located on one side of the second opening and the third opening in a second direction, the first direction intersects with the second direction. Wherein, the first electrode of the first light-emitting device is located on one side of the second opening in the second direction, the first electrode of the second light-emitting device is located on one side of the third opening in the second direction, and the light-emitting area of the first electrode of the first light-emitting device is smaller than the light-emitting area of the first electrode of the second light-emitting device.

[0014] In some embodiments of the present invention, the two first electrodes of the first light-emitting device and the second light-emitting device are arranged along the first direction. A first auxiliary electrode is provided on a side of the first electrode of the first light-emitting device away from the first electrode of the second light-emitting device, and the first auxiliary electrode is connected in parallel with the second electrode.

[0015] In some embodiments of the present invention, it is characterized in that the two first electrodes of the third light-emitting device and the fourth light-emitting device, and the two first electrodes of the fifth light-emitting device and the sixth light-emitting device are all arranged along the second direction.

[0016] In some embodiments of the present invention, the plurality of openings include a fourth opening, a fifth opening, and a sixth opening. The fourth opening and the fifth opening are arranged along the first direction and are respectively opposite to the second opening and the third opening. The sixth opening is located on a side of the fourth opening and the fifth opening close to the first group in the second direction;

[0017] The plurality of light-emitting devices include a second group. The second group includes a seventh light-emitting device and an eighth light-emitting device having a blue light-emitting color, a ninth light-emitting device and a tenth light-emitting device having a green light-emitting color, and an eleventh light-emitting device and a twelfth light-emitting device having a red light-emitting color. Among them, the two first electrodes of the seventh light-emitting device and the eighth light-emitting device are exposed to the fourth opening, the two first electrodes of the ninth light-emitting device and the tenth light-emitting device are exposed to the fifth opening, and the two first electrodes of the eleventh light-emitting device and the twelfth light-emitting device are exposed to the sixth opening;

[0018] The two first electrodes of the seventh light-emitting device and the eighth light-emitting device, and the two first electrodes of the ninth light-emitting device and the tenth light-emitting device are all arranged along the second direction. The two first electrodes of the eleventh light-emitting device and the twelfth light-emitting device are respectively arranged opposite to the two first electrodes of the first light-emitting device and the second light-emitting device.

[0019] In some embodiments of the present invention, the light-emitting area of the first electrode of the twelfth light-emitting device is smaller than the light-emitting area of the first electrode of the eleventh light-emitting device.

[0020] In some embodiments of the present invention, the two first electrodes of the eleventh light-emitting device and the twelfth light-emitting device are arranged along the first direction. A second auxiliary electrode is provided on a side of the first electrode of the twelfth light-emitting device away from the first electrode of the eleventh light-emitting device, and the second auxiliary electrode is connected in parallel with the second electrode.

[0021] In some embodiments of the present invention, the light-emitting areas of the two first electrodes of the first light-emitting device and the twelfth light-emitting device are the same, the light-emitting areas of the two first electrodes of the second light-emitting device and the eleventh light-emitting device are the same, and the light-emitting areas of the two first electrodes of the first light-emitting device and the twelfth light-emitting device account for 2 / 9 to 5 / 9 of the light-emitting areas of the two first electrodes of the second light-emitting device and the eleventh light-emitting device;

[0022] The light-emitting areas of the four first electrodes of the third light-emitting device, the fourth light-emitting device, the ninth light-emitting device, and the tenth light-emitting device are the same, the light-emitting areas of the four first electrodes of the fifth light-emitting device, the sixth light-emitting device, the seventh light-emitting device, and the eighth light-emitting device are the same, and the light-emitting areas of the four first electrodes of the third light-emitting device, the fourth light-emitting device, the ninth light-emitting device, and the tenth light-emitting device account for 3 / 10 to 5 / 10 of the light-emitting areas of the four first electrodes of the fifth light-emitting device, the sixth light-emitting device, the seventh light-emitting device, and the eighth light-emitting device.

[0023] The present invention provides a display device, including any of the above-mentioned display panels.

[0024] In the display panel and the display device provided by the embodiments of the present invention, by defining a plurality of sub-pixels in the pixel defining layer, that is, a plurality of light-emitting devices with the same light-emitting color are arranged in the opening of the pixel defining layer, and the plurality of light-emitting devices are electrically connected to different pixel driving circuits. On the premise of ensuring that the display panel has a high PPI, by setting a plurality of nozzles during the inkjet printing process, the mura problem existing in the display panel can be effectively eliminated.

[0025] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals represent the same parts in the following description.

[0028] Figure 1 It is a schematic diagram of the existing inkjet printing mentioned in the background art part of the present invention;

[0029] Figure 2 It is a schematic cross-sectional structure diagram of a pixel definition layer provided by an embodiment of the present invention;

[0030] Figure 3 It is a schematic cross-sectional structure diagram of a pixel definition layer and a light-emitting device therein provided by an embodiment of the present invention;

[0031] Figure 4 It is a schematic cross-sectional structure diagram of a light-emitting device provided by an embodiment of the present invention;

[0032] Figure 5 It is a schematic top view structure diagram of a pixel definition layer provided by an embodiment of the present invention;

[0033] Figure 6 It is a schematic top view structure diagram of a first electrode in a pixel definition layer provided by an embodiment of the present invention;

[0034] Figure 7 It is a schematic top view structure diagram of a light-emitting device in a pixel definition layer provided by an embodiment of the present invention;

[0035] Figures 8a to 8e It is a schematic cross-sectional structure diagram of a display panel in the A-A direction, B-B direction, C-C direction, and D-D direction provided by an embodiment of the present invention. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0037] Specifically, as Figures 2 to 4 shown, the display panel includes an array substrate 100 including a plurality of pixel driving circuits; a pixel definition layer 200 disposed on the array substrate 100 and provided with a plurality of openings 210; and a plurality of light-emitting devices 300 disposed on the array substrate 100. Each light-emitting device 300 includes a first electrode 310, a light-emitting portion 320 located on the first electrode 310, and a second electrode 330 located on the light-emitting portion 320. The first electrode 310 is electrically connected to the corresponding pixel driving circuit and exposed in the corresponding opening 210. The light-emitting portion 320 is located in the opening 210. Among them, at least two light-emitting devices 300 with the same emission color are exposed in the same opening 210 and electrically connected to different pixel driving circuits.

[0038] In this embodiment, at least two of the light-emitting devices 300 with the same emission color are disposed in the same opening 210. Without changing the light-emitting area of the light-emitting device 300, since a plurality of the light-emitting devices 300 are disposed in the same opening 210, it is necessary to increase the opening area of the opening 210 in order to satisfy the requirement of disposing a plurality of the light-emitting devices 300 in the same opening 210. When the opening area of the opening 210 increases, the number of nozzles required for inkjet printing to prepare the light-emitting portion 320 in the light-emitting device 300 also increases. According to the description in the background art section, during the process of preparing an OLED by inkjet printing, setting the number of nozzles used for printing each sub-pixel to 4 or more can disperse errors, thereby eliminating the mura problem existing in the display panel.

[0039] Therefore, in this embodiment, by defining a plurality of sub-pixels in the pixel defining layer 200, that is, a plurality of the light-emitting devices 300 with the same emission color are disposed in the opening 210 of the pixel defining layer 200, and the plurality of the light-emitting devices 300 are electrically connected to different pixel driving circuits. On the premise of ensuring that the display panel has a high PPI, the mura problem existing in the display panel can be effectively eliminated.

[0040] It should be noted that during the preparation process of the display panel, first, the first electrode 310 is prepared on the array substrate 100. Subsequently, the pixel defining layer 200 is prepared on the first electrode 310, and the opening 210 is formed on the pixel defining layer 200. A partial area of the first electrode 310 is exposed through the opening 210, and the light-emitting portion 320 is continuously prepared on the first electrode 310 by inkjet printing technology. Finally, the second electrode 330 is prepared on the light-emitting portion 320. Among them, the second electrode 330 serves as a planar electrode and actually covers the area above the light-emitting portion 320 and the area of the pixel defining layer 200 other than the opening 210. In this embodiment Figures 2 to 4 in order to clearly describe that a plurality of the light-emitting devices 300 with the same emission color are disposed in the opening 210 of the pixel defining layer 200, only the position of the second electrode 330 is simply schematically shown, which does not represent that in this embodiment, the second electrode 330 only covers the area above the light-emitting portion 320.

[0041] Please continue to refer to Figures 5 to 7 , Figures 5 to 7 in which two of the light-emitting devices 300 with the same emission color are disposed in the opening 210 of the pixel defining layer 200 as an example to further explain this embodiment.

[0042] Specifically, the multiple openings 210 include a first opening 210A, a second opening 210B, and a third opening 210C. The multiple light-emitting devices 300 include a first group, and the first group includes a first light-emitting device 300-1 and a second light-emitting device 300-2 having a red light-emitting color, a third light-emitting device 300-3 and a fourth light-emitting device 300-4 having a green light-emitting color, and a fifth light-emitting device 300-5 and a sixth light-emitting device 300-6 having a blue light-emitting color. Among them, the two first electrodes (310-1 and 310-2) of the first light-emitting device 300-1 and the second light-emitting device 300-2 are exposed to the first opening 210A, the two first electrodes (310-3 and 310-4) of the third light-emitting device 300-3 and the fourth light-emitting device 300-4 are exposed to the second opening 210B, and the two first electrodes (310-5 and 310-6) of the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 are exposed to the third opening 210C.

[0043] It can be clearly seen from Figure 5 that the area of the first opening 210A is smaller than the area of the second opening 210B, and the area of the second opening 210B is smaller than the area of the third opening 210C. In this embodiment, considering that the first light-emitting device 300-1 and the second light-emitting device 300-2 having a red light-emitting color have a longer lifespan, the red light-emitting area can be designed to be smaller, that is, the area of the first opening 210A can be designed to be smaller. While the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 having a blue light-emitting color have a shorter lifespan, their light-emitting area needs to be designed to be larger, that is, the area of the third opening 210C can be designed to be larger, so as to make up for the defect of their short lifespan. And the third light-emitting device 300-3 and the fourth light-emitting device 300-4 having a green light-emitting color have a long lifespan and high brightness, and serve as the brightness provider of the display panel. Their light-emitting area is between the first light-emitting device 300-1 and the second light-emitting device 300-2 having a red light-emitting color and the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 having a blue light-emitting color.

[0044] Further, the second opening 210B and the third opening 210C are arranged along a first direction, the first opening 210A is located on one side of the second opening 210B and the third opening 210C in a second direction, the first direction intersects with the second direction, wherein the first electrode 310-1 of the first light-emitting device 300-1 is located on one side of the second opening 210B in the second direction, the first electrode 310-2 of the second light-emitting device 300-2 is located on one side of the third opening 210C in the second direction, and the light-emitting area of the first electrode 310-1 of the first light-emitting device 300-1 is smaller than the light-emitting area of the first electrode 310-2 of the second light-emitting device 300-2.

[0045] In this embodiment, the third light-emitting device 300-3 and the fourth light-emitting device 300-4 with green light-emitting colors are arranged in the second opening 210B, and the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 with blue light-emitting colors are arranged in the third opening 210C. Since the service lives of the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 are shorter, by arranging the second light-emitting device 300-2 with a larger light-emitting area close to the third opening 210C, the red light emitted by the second light-emitting device 300-2 can compensate for the blue light emitted by the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 located in the third opening 210C to a certain extent. The green light emitted by the third light-emitting device 300-3 and the fourth light-emitting device 300-4 located in the second opening 210B itself has high brightness and a long service life, and no longer requires other surrounding colors of light for brightness compensation.

[0046] Therefore, by setting the light-emitting area of the first electrode 310-1 of the first light-emitting device 300-1 to be smaller than the light-emitting area of the first electrode 310-2 of the second light-emitting device 300-2, it is beneficial to form a display panel with uniform brightness and avoid visual defects caused by local overbrightness.

[0047] Even further, the two first electrodes (310-1 and 310-2) of the first light-emitting device 300-1 and the second light-emitting device 300-2 are arranged along the first direction. A first auxiliary electrode 400 is provided on a side of the first electrode 310-1 of the first light-emitting device 300-1 away from the first electrode 310-2 of the second light-emitting device 300-2, and the first auxiliary electrode 400 is connected in parallel with the second electrode 330.

[0048] In this embodiment, considering the voltage drop problem existing in the large-size OLED panel, the voltage differences at different positions of the display panel will affect the performance of the display panel. Therefore, by setting the first auxiliary electrode 400, the voltage drop problem existing in the display panel can be reduced.

[0049] Optionally, the two first electrodes (310-3 and 310-4) of the third light-emitting device 300-3 and the fourth light-emitting device 300-4, and the two first electrodes (310-5 and 310-6) of the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 are all arranged along the second direction.

[0050] Further, the plurality of openings 210 include a fourth opening 210D, a fifth opening 210E, and a sixth opening 210F. The fourth opening 210D and the fifth opening 210E are arranged along the first direction and are respectively opposite to the second opening 210B and the third opening 210C. The sixth opening 210F is located on the side close to the first group of the fourth opening 210D and the fifth opening 210E in the second direction;

[0051] The plurality of light-emitting devices 300 include a second group. The second group includes a seventh light-emitting device 300-7 and an eighth light-emitting device 300-8 having a blue light-emitting color, a ninth light-emitting device 300-9 and a tenth light-emitting device 300-10 having a green light-emitting color, and an eleventh light-emitting device 300-11 and a twelfth light-emitting device 300-12 having a red light-emitting color. Among them, the two first electrodes (310-7 and 310-8) of the seventh light-emitting device 300-7 and the eighth light-emitting device 300-8 are exposed to the fourth opening 210D, the two first electrodes (310-9 and 310-10) of the ninth light-emitting device 300-9 and the tenth light-emitting device 300-10 are exposed to the fifth opening 210E, and the two first electrodes (310-11 and 310-12) of the eleventh light-emitting device 300-11 and the twelfth light-emitting device 300-12 are exposed to the sixth opening 210F;

[0052] The two first electrodes (310-7 and 310-8) of the seventh light-emitting device 300-7 and the eighth light-emitting device 300-8, and the two first electrodes (310-9 and 310-10) of the ninth light-emitting device 300-9 and the tenth light-emitting device 300-10 are all arranged along the second direction. The two first electrodes (310-11 and 310-12) of the eleventh light-emitting device 300-11 and the twelfth light-emitting device 300-12 are respectively arranged opposite to the two first electrodes (310-1 and 310-2) of the first light-emitting device 300-1 and the second light-emitting device 300-2.

[0053] Among them, the light-emitting area of the first electrode 310-12 of the twelfth light-emitting device 300-12 is smaller than the light-emitting area of the first electrode 310-11 of the eleventh light-emitting device 300-11.

[0054] Similarly, in this embodiment, the seventh light-emitting device 300-7 and the eighth light-emitting device 300-8 with a blue light-emitting color are arranged in the fourth opening 210D, and the ninth light-emitting device 300-9 and the tenth light-emitting device 300-10 with a green light-emitting color are arranged in the fifth opening 210E. Since the seventh light-emitting device 300-7 and the eighth light-emitting device 300-8 have a short lifespan, by arranging the eleventh light-emitting device 300-11 with a larger light-emitting area close to the fourth opening 210D, the red light emitted by the eleventh light-emitting device 300-11 can compensate for the blue light emitted by the seventh light-emitting device 300-7 and the eighth light-emitting device 300-8 located in the fourth opening 210D to a certain extent. The green light emitted by the ninth light-emitting device 300-9 and the tenth light-emitting device 300-10 located in the fifth opening 210E has a high brightness and a long lifespan itself, and no longer requires other surrounding colors of light for brightness compensation.

[0055] Therefore, by setting the light-emitting area of the first electrode 310-12 of the twelfth light-emitting device 300-12 to be smaller than the light-emitting area of the first electrode 310-11 of the eleventh light-emitting device 300-11, it is beneficial to form a display panel with uniform brightness and avoid visual defects caused by local overbrightness.

[0056] Further, the two first electrodes (310-11 and 310-12) of the eleventh light-emitting device 300-11 and the twelfth light-emitting device 300-12 are arranged along the first direction. A second auxiliary electrode 500 is provided on a side of the first electrode 310-12 of the twelfth light-emitting device 300-12 that is away from the first electrode 310-11 of the eleventh light-emitting device 300-11. The second auxiliary electrode 500 is connected in parallel with the second electrode 330.

[0057] Similarly, in this embodiment, considering the voltage drop problem existing in the large-size OLED panel, the voltage difference at different positions of the display panel will affect the performance of the display panel. Therefore, by providing the second auxiliary electrode 500, the voltage drop problem existing in the display panel can be reduced.

[0058] In this embodiment, by respectively providing the first auxiliary electrode 400 and the second auxiliary electrode 500 on one side of the first opening 210A and the sixth opening 210F, the arrangement space of the display panel can be effectively utilized. At the same time, it can be understood that if the first auxiliary electrode 400 and the second auxiliary electrode 500 are distributed on the same side of the openings (210A and 210F), in terms of the arrangement on the entire display panel, since multiple auxiliary electrodes are regularly arranged on the same straight line and the auxiliary electrodes do not emit light, it is easy to cause dark lines to form in local areas of the display panel, resulting in visual defects. By staggering the distribution of the auxiliary electrodes on the panel, new display problems of the display panel can be avoided.

[0059] Optionally, the light-emitting areas of the two first electrodes (310-1 and 310-12) of the first light-emitting device 300-1 and the twelfth light-emitting device 300-12 are the same, the light-emitting areas of the two first electrodes (310-2 and 310-11) of the second light-emitting device 300-2 and the eleventh light-emitting device 300-11 are the same, and the light-emitting areas of the two first electrodes (310-1 and 310-12) of the first light-emitting device 300-1 and the twelfth light-emitting device 300-12 account for 2 / 9 to 5 / 9 of the light-emitting areas of the two first electrodes (310-1 and 310-11) of the second light-emitting device 300-2 and the eleventh light-emitting device 300-11;

[0060] The light-emitting areas of the four first electrodes (310-3, 310-4, 310-9, and 310-10) of the third light-emitting device 300-3, the fourth light-emitting device 300-4, the ninth light-emitting device 300-9, and the tenth light-emitting device 300-10 are the same. The light-emitting areas of the four first electrodes (310-5, 310-6, 310-7, and 310-8) of the fifth light-emitting device 300-5, the sixth light-emitting device 300-6, the seventh light-emitting device 300-7, and the eighth light-emitting device 300-8 are the same. And the light-emitting areas of the four first electrodes (310-3, 310-4, 310-9, and 310-10) of the third light-emitting device 300-3, the fourth light-emitting device 300-4, the ninth light-emitting device 300-9, and the tenth light-emitting device 300-10 account for 3 / 10 to 5 / 10 of the light-emitting areas of the four first electrodes (310-5, 310-6, 310-7, and 310-8) of the fifth light-emitting device 300-5, the sixth light-emitting device 300-6, the seventh light-emitting device 300-7, and the eighth light-emitting device 300-8.

[0061] It should be noted that in this embodiment, the ratio of the light-emitting areas being 3 / 10 to 5 / 10 is proposed based on the existing process conditions. If the process conditions are improved, the ratio of the light-emitting areas will also change accordingly.

[0062] Preferably, the size of the first opening 210A is 90um*20um, the size of the third opening 210C is 60um*86um to 90um*86um. In the first direction, the gap width between the second opening 210B and the third opening 210C is 15 to 25um. In the second direction, the gap widths between the first opening 210A, the second opening 210B, and the third opening 210C are designed to be 10um to 16um.

[0063] Preferably, the sizes of the first auxiliary electrode 400 and the second auxiliary electrode 500 are 15um*15um. It should be noted that the size of the first auxiliary electrode 400 can be the same as or different from the size of the second auxiliary electrode 500, without further limitation.

[0064] Furthermore, please refer to Figures 8a to 8e, since the first light-emitting device 300-1 and the second light-emitting device 300-2 are arranged in the first direction (A-A direction), the third light-emitting device 300-3 and the fourth light-emitting device 300-4, and the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 are all arranged in the second direction (B-B direction). Taking the first opening 210A and the second opening 210B as examples, Figure 8b and Figure 8c FIG. Figure 8b is a schematic cross-sectional structure diagram of the first opening 210A region in the A-A direction and the B-B direction. Figure 8d and Figure 8e FIG. Figure 8d is a schematic cross-sectional structure diagram of the second opening 210B region in the C-C direction and the D-D direction.

[0065] Among them, it can be clearly seen that a photoresist structure 600 is further provided between the first light-emitting device 300-1 and the second light-emitting device 300-2, and between the third light-emitting device 300-3 and the fourth light-emitting device 300-4. The photoresist structure 600 is used to reduce the ink crosstalk problem that occurs during the inkjet printing preparation process of multiple light-emitting devices 300 located in the same opening 210.

[0066] The present invention also provides a display device, and the display device includes any of the above display panels.

[0067] It can be understood that the display device includes a movable display device (such as a laptop computer, a mobile phone, etc.), a fixed terminal (such as a desktop computer, a television, etc.), a measuring device (such as a sports bracelet, a thermometer, etc.), and the like.

[0068] In this article, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A display panel, characterized in that, Comprising: An array substrate; A pixel definition layer disposed on the array substrate, with a plurality of openings formed on the pixel definition layer. The plurality of openings include a first opening, a second opening, and a third opening. The second opening and the third opening are arranged along a first direction, and the first opening is located on one side of the second opening and the third opening in a second direction. The first direction intersects with the second direction; A plurality of light-emitting devices disposed on the array substrate, each light-emitting device including a light-emitting portion located in a corresponding opening; Wherein, in the second direction, the overlapping area of the light-emitting portion in the first opening and the light-emitting portion in the third opening is larger than the overlapping area of the light-emitting portion in the first opening and the light-emitting portion in the second opening.

2. The display panel according to claim 1, wherein The area of the third opening is larger than the area of the second opening, and the area of the second opening is larger than the area of the first opening; Wherein, the light-emitting color of the light-emitting portion in the first opening is red, the light-emitting color of the light-emitting portion in the second opening is green, and the light-emitting color of the light-emitting portion in the third opening is blue.

3. The display panel according to claim 1, wherein The plurality of light-emitting devices include a first light-emitting device and a second light-emitting device corresponding to the first opening. The first light-emitting device is located on one side of the second opening in the second direction, and the second light-emitting device is located on one side of the third opening in the second direction; Wherein, the light-emitting area of the first light-emitting device is smaller than the light-emitting area of the second light-emitting device.

4. The display panel according to claim 3, wherein The plurality of light-emitting devices further include a third light-emitting device and a fourth light-emitting device corresponding to the second opening, and a fifth light-emitting device and a sixth light-emitting device corresponding to the third opening; Wherein, the third light-emitting device and the fourth light-emitting device are arranged along the second direction, and the fifth light-emitting device and the sixth light-emitting device are both arranged along the second direction.

5. The display panel according to claim 4, characterized in that, The plurality of openings include a fourth opening, a fifth opening, and a sixth opening. The fourth opening and the fifth opening are arranged along the first direction and are respectively opposite to the second opening and the third opening. The sixth opening is located between the fourth opening and the second opening, and between the fifth opening and the third opening in the second direction; The plurality of light-emitting devices include a seventh light-emitting device and an eighth light-emitting device corresponding to the fourth opening and having a light-emitting color of blue, a ninth light-emitting device and a tenth light-emitting device corresponding to the fifth opening and having a light-emitting color of green, and an eleventh light-emitting device and a twelfth light-emitting device corresponding to the sixth opening and having a light-emitting color of red; Wherein, the seventh light-emitting device and the eighth light-emitting device are arranged along the second direction, and the ninth light-emitting device and the tenth light-emitting device are arranged along the second direction.

6. The display panel according to claim 5, characterized in that, The light-emitting area of the twelfth light-emitting device is smaller than the light-emitting area of the eleventh light-emitting device.

7. The display panel according to claim 5, wherein The light-emitting areas of the first light-emitting device and the twelfth light-emitting device are the same, and the light-emitting areas of the second light-emitting device and the eleventh light-emitting device are the same; Among them, the ratio of the sum of the light-emitting areas of the first light-emitting device and the twelfth light-emitting device to the sum of the light-emitting areas of the second light-emitting device and the eleventh light-emitting device is from 2 / 9 to 5 / 9.

8. The display panel according to claim 5, wherein, The light-emitting areas of the third light-emitting device, the fourth light-emitting device, the ninth light-emitting device, and the tenth light-emitting device are the same, and the light-emitting areas of the fifth light-emitting device, the sixth light-emitting device, the seventh light-emitting device, and the eighth light-emitting device are the same; Among them, the ratio of the sum of the light-emitting areas of the third light-emitting device, the fourth light-emitting device, the ninth light-emitting device, and the tenth light-emitting device to the sum of the light-emitting areas of the fifth light-emitting device, the sixth light-emitting device, the seventh light-emitting device, and the eighth light-emitting device is from 3 / 10 to 5 / 10.

9. The display panel according to any one of claims 1 to 8, characterized in that The pixel defining layer is a single-layer film.

10. A display device, characterized in that, It includes the display panel according to any one of claims 1 to 9.

Images