Display panel and display device

Abstract

The present invention provides a display panel and a display device, wherein the display panel comprises: an array substrate, comprising a plurality of pixel driving circuits; a pixel definition layer, disposed on the array substrate, and having a plurality of openings; and a plurality of light-emitting devices, disposed on the array substrate, each of the light-emitting devices comprising 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, the light-emitting portion being located 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. The present invention can eliminate the mura problem under the premise that the display panel has a high PPI by arranging a plurality of light-emitting devices in the openings of the pixel definition layer, and the plurality of light-emitting devices are electrically connected to different pixel driving circuits.

Description

Technical Field

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

[0002] 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.

[0003] 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.

[0004] 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

[0005] Embodiments of the present invention provide a display panel and a display device, so as to improve the mura problem under the premise that the prepared display panel has a high PPI.

[0006] The present invention provides a display panel, comprising:

[0007] An array substrate including a plurality of pixel driving circuits;

[0008] a pixel definition layer, disposed on the array substrate and having a plurality of openings; and

[0009] A plurality of light-emitting devices are disposed on the array substrate, each of the light-emitting devices comprises 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 is electrically connected to the corresponding pixel driving circuit and exposed to the corresponding opening, and the light-emitting portion is located in the opening;

[0010] 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.

[0011] 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 light-emitting color, a third light-emitting device and a fourth light-emitting device having a green light-emitting color, and a fifth light-emitting device and a sixth light-emitting device having a blue light-emitting color, wherein both the first electrodes of the first light-emitting device and the second light-emitting device are exposed to the first opening, both the first electrodes of the third light-emitting device and the fourth light-emitting device are exposed to the second opening, and both the first electrodes of the fifth light-emitting device and the sixth light-emitting device are exposed to the third opening.

[0012] 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 the second direction, and 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 a light-emitting area of ​​the first electrode of the first light-emitting device is smaller than a light-emitting area of ​​the first electrode of the second light-emitting device.

[0013] 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.

[0014] 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 arranged along the second direction.

[0015] 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, and 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;

[0016] 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, wherein two first electrodes of the seventh light emitting device and the eighth light emitting device are exposed to the fourth opening, two first electrodes of the ninth light emitting device and the tenth light emitting device are exposed to the fifth opening, and two first electrodes of the eleventh light emitting device and the twelfth light emitting device are exposed to the sixth opening;

[0017] 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 arranged along the second direction, and 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.

[0018] In some embodiments of the present invention, a light emitting area of ​​the first electrode of the twelfth light emitting device is smaller than a light emitting area of ​​the first electrode of the eleventh light emitting device.

[0019] 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, and a second auxiliary electrode is provided on the 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.

[0020] 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;

[0021] 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.

[0022] The present invention provides a display device, comprising any one of the above-mentioned display panels.

[0023] In the display panel and the display device provided by the embodiments of the present invention, a plurality of sub-pixels are defined in the pixel definition layer, that is, a plurality of light-emitting devices with the same light-emitting color 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. Under the premise of ensuring that the display panel has a high PPI, a plurality of nozzles are arranged during the inkjet printing process to effectively eliminate the mura problem existing in the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the existing inkjet printing mentioned in the background technology part of the present invention;

[0026] Figure 2 is a schematic diagram of the cross-sectional structure of a pixel definition layer provided by an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of the cross-sectional structure of a pixel definition layer and a light-emitting device therein provided by an embodiment of the present invention;

[0028] Figure 4 is a schematic cross-sectional structure diagram of a light emitting device provided by an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of a top view structure of a pixel definition layer provided by an embodiment of the present invention;

[0030] Figure 6 is a schematic diagram of a top view of the structure of a first electrode in a pixel definition layer provided by an embodiment of the present invention;

[0031] Figure 7 is a schematic diagram of a top view of a light-emitting device in a pixel definition layer provided by an embodiment of the present invention;

[0032] Figures 8a to 8e It is a schematic diagram of the cross-sectional structure of a display panel provided by an embodiment of the present invention in the AA direction, the BB direction, the CC direction and the DD direction. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device.

[0034] Specifically, Figures 2 to 4 As shown, the display panel includes an array substrate 100, including a plurality of pixel driving circuits; a pixel definition layer 200, which is arranged on the array substrate 100 and has a plurality of openings 210; and a plurality of light-emitting devices 300, which are arranged on the array substrate 100, each of the light-emitting devices 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 to the corresponding opening 210, and the light-emitting portion 320 is located in the opening 210; wherein at least two of the light-emitting devices 300 with the same luminous color are exposed to the same opening 210 and are electrically connected to different pixel driving circuits.

[0035] In the present embodiment, by providing at least two light-emitting devices 300 with the same light-emitting color in the same opening 210, when the light-emitting area of ​​the light-emitting device 300 does not change, since a plurality of light-emitting devices 300 are provided in the same opening 210, it is necessary to increase the opening area of ​​the opening 210 in order to satisfy the requirement of providing a plurality of light-emitting devices 300 in the same opening 210. As the opening area of ​​the opening 210 increases, when the light-emitting portion 320 in the light-emitting device 300 is prepared by inkjet printing, the number of nozzles required for inkjet printing also increases. According to the description in the background technology section, in the process of preparing 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.

[0036] Therefore, in this embodiment, a plurality of sub-pixels are defined in the pixel definition layer 200, that is, a plurality of light-emitting devices 300 with the same light-emitting color are arranged in the opening 210 of the pixel definition layer 200, and the plurality of light-emitting devices 300 are electrically connected to different pixel driving circuits. Under the premise of ensuring that the display panel has a high PPI, the mura problem existing in the display panel can be effectively eliminated.

[0037] It should be noted that, in the process of preparing the display panel, first, the first electrode 310 is prepared on the array substrate 100, and then, the pixel definition layer 200 is prepared on the first electrode 310, and the opening 210 is prepared on the pixel definition layer 200, and a part 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, and finally, the second electrode 330 is prepared on the light-emitting portion 320, wherein the second electrode 330 is a surface electrode, which actually covers the area including the area above the light-emitting portion 320 and the area of ​​the pixel definition 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 light-emitting color are arranged in the opening 210 of the pixel definition layer 200, only a simple illustration of the position of the second electrode 330 is given. This does not mean that in this embodiment, the second electrode 330 only covers the area above the light-emitting portion 320.

[0038] Please continue to refer to Figures 5 to 7 , Figures 5 to 7 In the figure, the embodiment is further explained by taking the example that two light emitting devices 300 with the same light emitting color are arranged in the opening 210 of the pixel definition layer 200.

[0039] Specifically, the plurality of openings 210 include a first opening 210A, a second opening 210B and a third opening 210C, and the plurality of light-emitting devices 300 include a first group, the first group including 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, wherein 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, 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 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.

[0040] from Figure 5 It can be clearly seen 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 with red light-emitting color have a longer life, 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 with blue light-emitting color have a short life, and their light-emitting areas need to be designed to be larger, that is, the area of ​​the third opening 210C can be designed to be larger, thereby compensating for the defect of their short life, while the third light-emitting device 300-3 and the fourth light-emitting device 300-4 with green light-emitting color have a long life and high brightness. As the brightness of the display panel, their light-emitting areas are between the first light-emitting device 300-1 and the second light-emitting device 300-2 with red light-emitting color and the fifth light-emitting device 300-5 and the sixth light-emitting device 300-6 with blue light-emitting color.

[0041] Further, the second opening 210B and the third opening 210C are arranged along the first direction, the first opening 210A is located on one side of the second opening 210B and the third opening 210C in the second direction, and 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.

[0042] In this embodiment, the third light emitting device 300-3 and the fourth light emitting device 300-4 having a green light emitting color are arranged in the second opening 210B, and the fifth light emitting device 300-5 and the sixth light emitting device 300-6 having a blue light emitting color are arranged in the third opening 210C. Since the fifth light emitting device 300-5 and the sixth light emitting device 300-6 have a short lifespan, by arranging the second light emitting device 300-2 having 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, and 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 has high brightness and long lifespan, and no longer needs other colors of surrounding light for brightness compensation.

[0043] 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.

[0044] Furthermore, 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, and 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.

[0045] In this embodiment, considering the voltage drop problem existing in the large-size OLED panel, the difference in voltage 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 of the display panel can be reduced.

[0046] 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 arranged along the second direction.

[0047] 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, and the sixth opening 210F is located on one side of the fourth opening 210D and the fifth opening 210E close to the first group in the second direction;

[0048] 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, wherein 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, 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 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;

[0049] 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 arranged along the second direction, 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 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.

[0050] 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.

[0051] Similarly, in the present embodiment, the seventh light emitting device 300-7 and the eighth light emitting device 300-8 having 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 having 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 having 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 to a certain extent 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, and 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 high brightness and long lifespan, and no longer needs brightness compensation by surrounding light of other colors.

[0052] 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.

[0053] 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, and a second auxiliary electrode 500 is provided on the side of the first electrode 310-12 of the twelfth light-emitting device 300-12 away from the first electrode 310-11 of the eleventh light-emitting device 300-11, and the second auxiliary electrode 500 is connected in parallel with the second electrode 330.

[0054] Similarly, in this embodiment, considering the voltage drop problem existing in the large-size OLED panel, the difference in voltage at different positions of the display panel will affect the performance of the display panel. Therefore, by setting the second auxiliary electrode 500, the voltage drop problem of the display panel can be reduced.

[0055] In this embodiment, by respectively arranging 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), the arrangement on the entire display panel is extended. Since a plurality of 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, causing visual defects. By staggering the auxiliary electrodes on the panel, new display problems of the display panel can be avoided.

[0056] 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;

[0057] 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 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.

[0058] It should be noted that in the present embodiment, the ratio of the light emitting area of ​​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 area will also change accordingly.

[0059] Preferably, the size of the first opening 210A is 90um*20um, the size of the third opening 210C is 60um*86um to 90um*86um, the gap width between the second opening 210B and the third opening 210C in the first direction is 15 to 25um, and in the second direction, the gap width between the first opening 210A, the second opening 210B and the third opening 210C is designed to be 10um to 16um.

[0060] Preferably, the size of the first auxiliary electrode 400 and the second auxiliary electrode 500 is 15um*15um, wherein it should be noted that the size of the first auxiliary electrode 400 may be the same as or different from the size of the second auxiliary electrode 500 without further limitation.

[0061] For further information, 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 (AA 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 arranged in the second direction (BB direction), taking the first opening 210A and the second opening 210B as an example, Figure 8b and Figure 8c is a schematic diagram of the cross-sectional structure of the first opening 210A region in the AA direction and the BB direction, Figure 8d and Figure 8e It is a schematic diagram of the cross-sectional structure of the second opening 210B region in the CC direction and the DD direction.

[0062] Among them, it can be clearly seen that a light blocking structure 600 is also arranged 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 light blocking structure 600 is used to reduce the ink crosstalk problem occurring during the preparation process of inkjet printing of multiple light emitting devices 300 located in the same opening 210.

[0063] The present invention further provides a display device, comprising any one of the above-mentioned display panels.

[0064] 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.), etc.

[0065] Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. 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 methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A display panel, characterized in that: include: An array substrate including a plurality of pixel driving circuits; A pixel definition layer, disposed on the array substrate, and having a plurality of openings; as well as A plurality of light-emitting devices are arranged on the array substrate, each of the light-emitting devices comprises 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 is electrically connected to the corresponding pixel driving circuit and exposed to the corresponding opening, the light-emitting portion is located in the opening, 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; The plurality of openings include a first opening, a second opening, and a third opening, the plurality of light emitting devices include a first group, the first group includes a first light emitting device and a second light emitting device having a red light emitting color and located in the first opening, a third light emitting device and a fourth light emitting device having a green light emitting color and located in the second opening, and a fifth light emitting device and a sixth light emitting device having a blue light emitting color and located in the third opening; The second opening and the third opening are arranged along the first direction, the first opening is located on one side of the second opening and the third opening in the second direction, 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 a light-emitting area of ​​the first electrode of the first light-emitting device is smaller than a light-emitting area of ​​the first electrode of the second light-emitting device.

2. The display panel according to claim 1, characterized in that: 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.

3. The display panel according to claim 2, 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 arranged along the second direction.

4. The display panel according to claim 1, 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, and 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; 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, wherein two first electrodes of the seventh light-emitting device and the eighth light-emitting device are exposed to the fourth opening, two first electrodes of the ninth light-emitting device and the tenth light-emitting device are exposed to the fifth opening, and two first electrodes of the eleventh light-emitting device and the twelfth light-emitting device are exposed to the sixth opening; 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 arranged along the second direction, and 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.

5. The display panel according to claim 4, characterized in that: A light emitting area of ​​the first electrode of the twelfth light emitting device is smaller than a light emitting area of ​​the first electrode of the eleventh light emitting device.

6. The display panel according to claim 5, characterized in that: 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.

7. The display panel according to claim 5, characterized in that: 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; 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.

8. A display device, characterized in that: It comprises the display panel as claimed in any one of claims 1 to 7.

Images