Display panel and display apparatus

Abstract

The present application provides a display panel and a display apparatus. A partition structure of the display panel is located between two adjacent light-emitting units. A sub-functional layer of a light-emitting functional layer is discontinuous at a position corresponding to the partition structure. At least one gap is formed at an end portion of the partition structure on an outer side of each light-emitting unit. Among the two adjacent light-emitting units, the gap corresponding to one light-emitting unit and the gap corresponding to the other light-emitting unit are staggered to improve the partition effect of the partition structure.

Description

Display panel and display device Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] Organic light-emitting diode (OLED) displays have become a highly competitive and promising next-generation display technology due to their advantages such as all-solid-state structure, high brightness, wide viewing angle, fast response speed, and wide operating temperature range. Their light-emitting structure consists of a pair of electrodes and an organic material layer. When a DC voltage is applied, holes are injected from the anode into the organic light-emitting material layer, and electrons are injected from the cathode. The electrons and holes combine in the light-emitting layer, releasing energy and exciting the organic light-emitting material molecules to form excited-state molecules. When the excited-state molecules return to the ground state, they emit photons and emit light.

[0003] As the resolution of OLED displays continues to increase, the number of pixel units is also increasing, leading to a gradual decrease in the spacing between pixel units. Furthermore, with the improved luminous efficiency of the light-emitting materials used in OLED displays, high brightness can be achieved with low current and low voltage, thereby reducing power consumption. However, due to the reduced spacing between pixel units and the fact that the light-emitting materials emit light with only a small amount of current, a small current leakage from one pixel unit to an adjacent pixel unit can cause the aforementioned highly efficient light-emitting materials to emit light. This can result in adjacent pixels also emitting faint light when one pixel emits light, leading to co-emission or crosstalk, which reduces panel quality and color purity. Invention Overview

[0004] This application provides a display panel and a display device to alleviate the technical problem of crosstalk in OLED displays.

[0005] The technical solution provided in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a display panel, which includes:

[0007] Drive substrate;

[0008] A light-emitting functional layer is disposed on the driving substrate. The light-emitting functional layer includes a sub-functional layer. The light-emitting functional layer is divided into a plurality of spaced light-emitting units. The plurality of light-emitting units are arranged in a sub-pixel row in a first direction and in a sub-pixel column in a second direction. The first direction and the second direction intersect.

[0009] A partition structure is disposed on the driving substrate and located between two adjacent light-emitting units, and the sub-functional layer is disconnected at the position corresponding to the partition structure;

[0010] The partition structure is an enclosing structure continuously arranged in at least two directions. Among the partially adjacent light-emitting units, at least one light-emitting unit is surrounded by a partition structure. The end of the partition structure forms at least one notch on the outside of the light-emitting unit. In two adjacent light-emitting units on the sub-pixel row or the sub-pixel column, the notch corresponding to one light-emitting unit is staggered from the notch corresponding to the other light-emitting unit.

[0011] Secondly, embodiments of this application also provide a display device, which includes a display panel, the display panel comprising:

[0012] Drive substrate;

[0013] A light-emitting functional layer is disposed on the driving substrate. The light-emitting functional layer includes a sub-functional layer. The light-emitting functional layer is divided into a plurality of spaced light-emitting units. The plurality of light-emitting units are arranged in a sub-pixel row in a first direction and in a sub-pixel column in a second direction. The first direction and the second direction intersect.

[0014] A partition structure is disposed on the driving substrate and located between two adjacent light-emitting units, and the sub-functional layer is disconnected at the position corresponding to the partition structure;

[0015] The partition structure is an enclosing structure continuously arranged in at least two directions. Among the partially adjacent light-emitting units, at least one light-emitting unit is surrounded by a partition structure. The end of the partition structure forms at least one notch on the outside of the light-emitting unit. In two adjacent light-emitting units on the sub-pixel row or the sub-pixel column, the notch corresponding to one light-emitting unit is staggered from the notch corresponding to the other light-emitting unit. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments or prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 illustrates a schematic diagram of the lateral conductive path of the light-emitting functional layer on an OLED display panel.

[0018] Figure 2 illustrates a schematic diagram of a partition structure between light-emitting units.

[0019] Figure 3 is a schematic diagram of a planar structure of a display panel provided in an embodiment of this application.

[0020] Figure 4 is a schematic diagram of the cross-sectional structure along the M-M' direction in Figure 3.

[0021] Figure 5 is a schematic diagram showing the detailed structure of the light-emitting functional layer in Figure 4.

[0022] Figure 6 is a schematic diagram showing some details of the driving substrate provided in an embodiment of this application.

[0023] Figure 7 is a detailed structural diagram of some of the light-emitting units and partition structures in Figure 3.

[0024] Figure 8 is a detailed structural diagram of some of the light-emitting units and support columns in Figure 3. Embodiments of the present invention

[0025] The following descriptions of the embodiments are based on the accompanying illustrations, illustrating specific embodiments in which this application can be implemented. Directional terms used in this application, such as [up], [down], [front], [back], [left], [right], [inner], [outer], [side], etc., are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustration and understanding of this application, and not for limiting this application. In the figures, structurally similar units are denoted by the same reference numerals. In the figures, the thickness of some layers and regions is exaggerated for clarity and ease of description. That is, the dimensions and thicknesses of each component shown in the figures are arbitrarily shown, but this application is not limited thereto.

[0026] To address the crosstalk problem in OLED displays, the inventors of this application discovered that it is mainly caused by lateral conductivity in some layers of the light-emitting functional layer. Specifically, referring to Figures 1 and 2, Figure 1 illustrates a schematic diagram of the lateral conductivity path of the light-emitting functional layer on an OLED display panel, and Figure 2 illustrates a schematic diagram of a partition structure between light-emitting units. Referring to Figure 1, a light-emitting functional layer 20' is disposed on a driving substrate 10', and the light-emitting functional layer 20' is divided into multiple light-emitting units 201'. Each light-emitting unit 201' is correspondingly disposed with a first electrode 41', and the first electrode 41' is located between the light-emitting unit 201' and the driving substrate 10'. A pixel definition layer is disposed on a portion of the first electrode 41' and the driving substrate 10'. The pixel definition layer has a first opening at the position corresponding to the first electrode 41', and the light-emitting unit 201' is disposed corresponding to the first opening. The size and shape of the light-emitting unit 201' match the size and shape of the first opening.

[0027] The light-emitting functional layer 20' includes a first light-emitting layer 21' and a first common organic layer 22' located between the first light-emitting layer 21' and the driving substrate 10'. The first common organic layer 22' can be a hole injection layer or a hole transport layer, etc. The first common organic layer 22' has good charge transport performance, which easily causes lateral leakage current. As shown in Figure 1, the charge moves laterally from one light-emitting unit 201' to an adjacent light-emitting unit 201' through the first common organic layer 22', causing the adjacent light-emitting unit 201' to steal light, thus causing crosstalk problems. Especially for tandem devices, the lateral leakage current phenomenon is more serious.

[0028] A tandem device refers to a display panel where the light-emitting functional layer 20' has two light-emitting layers in the thickness direction, with a charge-generating layer 24' (CGL) disposed between the two light-emitting layers, as shown in Figure 1. The charge-generating layer 24' is disposed between the first light-emitting layer 21' and the second light-emitting layer 23', and a second common organic layer 25' can also be disposed between the charge-generating layer 24' and the second light-emitting layer 23'. Tandem devices offer advantages such as higher brightness, longer lifespan, and lower power consumption. However, the organic functional layers in tandem devices, such as the first common organic layer 22' and the second common organic layer 25', have a certain degree of lateral conductivity in addition to vertical conductivity. Especially with the addition of the charge-generating layer 24', which connects the two light-emitting layers in series and has strong charge generation and separation capabilities, as well as strong conductivity, it significantly aggravates crosstalk between the light-emitting units 201', affecting the display effect of the display panel. Furthermore, the severity of leakage current varies among the light-emitting units 201'. Among adjacent light-emitting units 201', one light-emitting unit 201' may have a more severe leakage current problem than the other light-emitting units 201', thereby further aggravating local crosstalk.

[0029] To improve the crosstalk problem between light-emitting units 201', the inventors discovered that lateral leakage current can be blocked by setting a partition structure 30' between adjacent light-emitting units 201'. As shown in Figure 2, a strip-shaped partition structure 30' is set between adjacent light-emitting units 201'. The partition structure 30' can block the lateral leakage current of adjacent light-emitting units 201' in some directions, thereby improving the crosstalk problem. However, this simple island-shaped isolation structure 30' design cannot completely isolate the leakage current between adjacent light-emitting units 201'. Some leakage current will bypass the isolation structure 30' and reach the adjacent light-emitting units 201', causing the adjacent light-emitting units 201' to light up illegally. Moreover, this design has the same isolation effect on all light-emitting units 201', and cannot specifically isolate the light-emitting units 201' with serious leakage current. As a result, the improvement of leakage current from the light-emitting unit 201' with serious leakage current to the adjacent light-emitting unit 201' is limited. As shown in Figure 2, the light-emitting unit 201' with serious leakage current leaks current to the adjacent light-emitting unit 201' through the gaps of the surrounding isolation structure 30', resulting in limited improvement of crosstalk problem and failing to meet the high resolution requirements of high-end products.

[0030] Therefore, the inventors of this application, through further exploration and research, have proposed a display panel and a display device.

[0031] Please refer to Figures 3 to 6. Figure 3 is a planar structural schematic diagram of a display panel provided in an embodiment of this application. Figure 4 is a cross-sectional structural schematic diagram along the M-M' direction in Figure 3. Figure 5 is a detailed structural schematic diagram of the light-emitting functional layer in Figure 4. Figure 6 is a partial detailed structural schematic diagram of the driving substrate provided in an embodiment of this application. Referring to Figures 3 and 4, the display panel 100 includes a driving substrate 10, a light-emitting functional layer 20 disposed on the driving substrate 10, and a partition structure 30. The light-emitting functional layer 20 is divided into a plurality of spaced-apart light-emitting units 201. The plurality of light-emitting units 201 are arranged in a sub-pixel row in a first direction X, and the plurality of light-emitting units 201 are arranged in a sub-pixel column in a second direction Y. The first direction X and the second direction Y intersect. The partition structure 30 is located between two adjacent light-emitting units 201. The light-emitting functional layer 20 includes a sub-functional layer, which is disconnected at a position corresponding to the partition structure 30. The partition structure 30 is an enclosing structure continuously arranged in at least two directions. Among the partially adjacent light-emitting units 201, at least one light-emitting unit 201 is surrounded by a partition structure 30. The end of the partition structure 30 forms at least one notch 301 on the outside of the light-emitting unit 201. Among two adjacent light-emitting units 201 on the sub-pixel row or the sub-pixel column, the notch 301 corresponding to one light-emitting unit 201 is staggered from the notch 301 corresponding to the other light-emitting unit 201.

[0032] Thus, by using the partition structure 30 between adjacent light-emitting units 201, the partition structure 30 can disconnect the sub-functional layer on the light-emitting functional layer 20 to block the lateral conductivity of the sub-functional layer, thereby improving the crosstalk between adjacent light-emitting units 201. Moreover, the partition structure 30 is provided with at least one notch 301, and the notches 301 corresponding to adjacent light-emitting units 201 are staggered, which can improve the isolation effect of the partition structure 30 and better improve the crosstalk between adjacent light-emitting units 201.

[0033] Specifically, referring to Figure 3, each partition structure 30 includes two centrally symmetrically arranged partition portions 31 to avoid stress concentration when the display panel 100 needs to be bent. A notch 301 is formed at the junction of the two partition portions 31, such that each partition structure 30 includes two opposing notches 301. In two adjacent partition structures 30, a partition portion 31 is provided between two adjacent notches 301, such that in two adjacent light-emitting units 201, leakage current from one light-emitting unit 201 moving laterally through its corresponding notch 301 is blocked by the partition portion 31 corresponding to the other light-emitting unit 201, thereby preventing crosstalk between adjacent light-emitting units 201.

[0034] In one embodiment, a plurality of light-emitting units 201 are arranged in a sub-pixel row in a first direction X, and a plurality of light-emitting units 201 are arranged in a sub-pixel column in a second direction Y. The first direction X and the second direction Y are intersected. There is a first interval between two adjacent light-emitting units 201 in the first direction X, and a second interval between two adjacent light-emitting units 201 in the second direction Y.

[0035] For example, the plurality of light-emitting units 201 are divided into a plurality of repeating units RU, and the plurality of repeating units RU are arranged in an array on the driving substrate 10. Each repeating unit RU includes four light-emitting units 201, and the four light-emitting units 201 include one first color light-emitting unit 201-R, one second color light-emitting unit 201-B, and two third color light-emitting units 201-G, wherein the first color light-emitting unit 201-R is a red light-emitting unit 201, the second color light-emitting unit 201-B is a blue light-emitting unit 201, and the third color light-emitting unit 201-G is a green light-emitting unit 201. The area of ​​the third color light-emitting unit 201-G is smaller than the area of ​​the first color light-emitting unit 201-R, and the area of ​​the first color light-emitting unit 201-R is smaller than the area of ​​the second color light-emitting unit 201-B.

[0036] The first color-emitting unit 201-R is disposed adjacent to the third color-emitting unit 201-3 in both the first direction X and the second direction Y. Similarly, the second color-emitting unit 201-B is also disposed adjacent to the third color-emitting unit 201-3 in both the first direction X and the second direction Y. Furthermore, the major axes of the two third color-emitting units 201-3 are different; for example, the major axis of one third color-emitting unit 201-3 extends along the first direction X, while the major axis of the other third color-emitting unit 201-3 extends along the second direction Y. It should be noted that the arrangement of the color-emitting units 201 in this embodiment is merely illustrative and this application is not limited thereto.

[0037] Taking a second color light-emitting unit 201-B and a third light-emitting unit 201-3 arranged adjacent to each other in the first direction X as an example, the second color light-emitting unit 201-B is surrounded by a partition structure 30, and the third light-emitting unit 201-3 is surrounded by a partition structure 30. The partition structure 30 on the outside of the second light-emitting unit 201-B has two notches 301, and the partition structure 30 on the outside of the third light-emitting unit 201-3 has two notches 301. There is a partition portion 31 between the notch 301 corresponding to the second light-emitting unit 201-B and the notch 301 corresponding to the third light-emitting unit 201-3, and there are two partition portions 31 between the second light-emitting unit 201-B and the third light-emitting unit 201-3, so as to improve the partitioning effect of the partition structure 30.

[0038] Referring to Figure 4, the display panel 100 further includes a first electrode layer 40 and a second electrode layer 50. The first electrode layer 40 is located between the driving substrate 10 and the light-emitting functional layer 20. The first electrode layer 40 includes a plurality of spaced-apart first electrodes 41, each of which corresponds to a light-emitting unit 201; that is, each light-emitting unit 201 corresponds to one first electrode 41, and each first electrode 41 corresponds to one light-emitting unit 201. The second electrode layer 50 is located on the side of the light-emitting functional layer 20 away from the driving substrate 10. The second electrode layer 50 is a continuous surface, wherein the first electrode 41 is the anode, and the second electrode layer 50 is the cathode. The light-emitting unit 201 emits light under the combined action of the first electrode 41 and the second electrode layer 50.

[0039] The display panel 100 further includes a pixel definition layer 60, which is located on the side of the first electrode layer 40 away from the driving substrate 10. The pixel definition layer 60 has a first opening 601 at a position corresponding to the first electrode 41, such that the pixel definition layer 60 covers a portion of the first electrode 41 and the driving substrate 10. Each first opening 601 corresponds to one light-emitting unit 201, with each light-emitting unit 201 corresponding to one first opening 601. The size and shape of each light-emitting unit 201 match the size and shape of the first opening 601. For example, if the third color light-emitting unit 201-G is elliptical, then the first opening 601 corresponding to the second color light-emitting unit 201-B is also elliptical. Optionally, the pixel definition layer 60 may be made of organic materials, such as polyimide, acrylic, or polyethylene terephthalate.

[0040] Optionally, the isolation portion of the partition structure 30 is disposed on the pixel definition layer 60, and the material of the partition structure 30 includes organic photoresist materials, etc. Of course, the material and placement of the partition structure 30 are not limited thereto. For example, the partition structure 30 can be integrally formed with the pixel definition layer 60, that is, the partition structure 30 is formed simultaneously when the structure of the pixel definition layer 60 is formed; or, in some other embodiments, the pixel definition layer 60 also forms a second opening, and the partition structure 30 is disposed in the second opening to reduce the thickness of the display panel 100.

[0041] The longitudinal cross-sectional shape of the partition portion 31 is an inverted trapezoid, meaning the area of ​​the bottom of the partition portion 31 is smaller than the area of ​​the top of the partition portion 31, forming an undercut structure. The bottom of the partition portion 31 is close to the driving substrate 10, and the top of the partition portion 31 is located on the side of the bottom away from the driving substrate 10. The light-emitting functional layer 20 is disconnected at the location of the partition portion 31 to block the lateral leakage current of the sub-functional layers in the light-emitting functional layer 20. The second electrode layer 50 is also disconnected at the location of the partition portion 31. The notch 301 on the partition structure 30 allows the second electrode layers 50 corresponding to each light-emitting unit 201 to be connected together, thereby reducing the impact of the partition structure 30 on the voltage drop (IR drop) on the second electrode layer 50.

[0042] Referring to Figure 5, taking one of the light-emitting units 201 as an example, the light-emitting functional layer 20 includes a first light-emitting layer 21 and a first common organic layer 22, the first common organic layer 22 being located between the first light-emitting layer 21 and the driving substrate 10. The sub-functional layer includes the first common organic layer 22, which is disconnected at the location of the partition structure 30. The first common organic layer 22 can be at least one of a hole injection layer and a hole transport layer. Of course, the light-emitting functional layer 20 may also include an electron transport layer and an electron injection layer disposed one layer away from the driving substrate 10 on the light-emitting layer. The first light-emitting layer 21 is used to emit light of a corresponding color.

[0043] In some embodiments, the light-emitting functional layer 20 further includes a second light-emitting layer 23 and a charge-generating layer 24. The charge-generating layer 24 is located between the first light-emitting layer 21 and the second light-emitting layer 23. The charge-generating layer 24 is used to connect the first light-emitting layer 21 and the second light-emitting layer 23 in series to form a tandem light-emitting device, enabling the display panel 100 to achieve higher brightness, longer lifespan, and lower power consumption. The charge-generating layer 24 has strong charge generation and separation capabilities and strong self-conductivity. The material of the charge-generating layer 24 may include n-type doped organic layers / inorganic metal oxides, such as Alq3:Mg / WO3; or n-type doped organic layers / organic layers, such as Alq3:Li / HAT-CN; or n-type doped organic layers / p-type doped organic layers, such as BPhen:Cs / NPB:F4-TCNQ; or undoped, such as F 16 CuPc / CuPc and Al / WO3 / Au, etc.

[0044] The sub-functional layer further includes the charge generation layer 24, which is disconnected at the location of the partition structure 30. Naturally, the light-emitting functional layer 20 may also include a second common organic layer 25 located between the charge generation layer 24 and the second light-emitting layer 23. The sub-functional layer also includes the second common organic layer 25, which is disconnected at the location of the partition structure 30. The second common organic layer 25 includes at least one of a hole injection layer and a hole transport layer.

[0045] Each light-emitting unit 201 includes a first common organic layer 22, a first light-emitting layer 21, a charge-generating layer 24, and a second light-emitting layer 23 corresponding to the first opening 601. Of course, when the light-emitting functional layer 20 also includes other common layers, each light-emitting unit 201 also includes corresponding other common layers.

[0046] Of course, the display panel 100 also includes an encapsulation layer 70 covering the side of the second electrode layer 50 away from the driving substrate 10. The encapsulation layer 70 is used to protect the light-emitting unit 201 to isolate it from water and oxygen, preventing water and oxygen from entering and causing the light-emitting unit 201 to fail. Optionally, the encapsulation layer 70 adopts thin-film encapsulation. For example, the encapsulation layer 70 includes a first inorganic encapsulation layer 70, an organic encapsulation layer 70, and a second inorganic encapsulation layer 70 stacked together.

[0047] Referring to FIG6, the driving substrate 10 includes a substrate 11 and a transistor 12 disposed on the substrate 11. The transistor 12 is connected to the corresponding first electrode 41. Optionally, the driving substrate 10 further includes a bridging electrode 13 disposed between the transistor 12 and the first electrode 41. The first electrode 41 is connected to the corresponding transistor 12 through the bridging electrode 13.

[0048] The substrate 11 includes a first sub-substrate 111, a barrier layer 112, a second sub-substrate 113, and a buffer layer 114 stacked together. The materials of the first sub-substrate 111 and the second sub-substrate 113 include polyimide, etc., and the materials of the barrier layer 112 and the buffer layer 114 include inorganic materials such as silicon oxide and silicon nitride.

[0049] The transistor 12 includes an active layer 121, a first gate 122, a third electrode 123, a source 124, and a drain 125. Naturally, the driving substrate 10 also includes multiple insulating layers, such as a first gate insulating layer 141 located between the active layer 121 and the first gate 122, a second gate insulating layer 142 located between the first gate 122 and the third electrode 123, an interlayer insulating layer 143 located between the third electrode 123 and the source 124 and drain 125, a first planarization layer 144 located between the source 124, drain 125, and the bridging electrode 13, and a second planarization layer 145 located between the bridging electrode 13 and the first electrode 41. The pixel definition layer 60 covers a portion of the first electrode 41 and the second planarization layer 145.

[0050] In one embodiment, referring to Figures 3 to 7, Figure 7 is a detailed structural schematic diagram of some of the light-emitting units 201 and the partition structure 30 in Figure 3. Referring to Figures 3 and 7, in the two partition structures 30 corresponding to two adjacent light-emitting units 201, each partition portion 31 includes a first partition sub-part 311 and a second partition sub-part 312 connected to each other. The first partition sub-part 311 of two adjacent partition portions 31 is located between the two adjacent light-emitting units 201, and the second partition sub-part 312 of two adjacent partition portions 31 is located on both sides of the two adjacent light-emitting units 201.

[0051] The first partition sub-part 311 is located within the first interval and extends along the second direction Y, and two first partition sub-parts 311 are provided within the same first interval. The second partition sub-part 312 is located within the second interval and extends along the first direction X, and two second partition sub-parts 312 are provided within the same second interval. The surface shapes of the first partition sub-part 311 and the second partition sub-part 312 are both elongated, such as straight, curved, or arc-shaped. When the surface shapes of the first partition sub-part 311 and the second partition sub-part 312 are both elongated, the surface shape of the partition part 31 formed by the first partition sub-part 311 and the second partition sub-part 312 is L-shaped. In this case, each partition structure 30 is composed of two L-shaped partition parts 31, one partition part 31 is upright L-shaped and the other partition part 31 is inverted L-shaped. In the two partition structures 30 corresponding to the two adjacent light-emitting units 201, one partition part 31 is upright L-shaped and the other partition part 31 is inverted L-shaped.

[0052] The "L"-shaped design refers to the fact that the first partition sub-part 311 and the second partition sub-part 312 form an approximately "L" shape. The included angle between the first partition sub-part 311 and the second partition sub-part 312 is not limited to being perpendicular. For example, the included angle between the first partition sub-part 311 and the second partition sub-part 312 can be greater than 90 degrees and less than 180 degrees, or the included angle between the first partition sub-part 311 and the second partition sub-part 312 can be less than 90 degrees. The included angle between the first partition sub-part 311 and the second partition sub-part 312 corresponds to the corresponding light-emitting unit 201, that is, the surface shape of the partition part 31 can match the shape of its corresponding light-emitting unit 201.

[0053] Two adjacent light-emitting units 201 in the first direction X are a first light-emitting unit 201-1 and a second light-emitting unit 201-2. In the second direction Y, the length of the first light-emitting unit 201-1 is less than the length of the second light-emitting unit 201-2. The length L1 of the overlapping area of ​​the two first partition sub-parts 311 located between the first light-emitting unit 201-1 and the second light-emitting unit 201-2 is greater than the length of the first light-emitting unit 201-1. For example, the end of the first partition sub-part 311 away from the second partition sub-part 312 is flush with the outer boundary of the second light-emitting unit 201-2 in the second direction Y, so as to maximize the length of the first partition sub-part 311 while ensuring the length of the notch 301.

[0054] The two adjacent light-emitting units 201 in the second direction Y are the third light-emitting unit 201-3 and the fourth light-emitting unit 201-4. In the first direction X, the length L2 of the third light-emitting unit 201-3 is less than the length of the fourth light-emitting unit 201-4. The length L2 of the overlapping area of ​​the two second partition sub-parts 312 located between the third light-emitting unit 201-3 and the fourth light-emitting unit 201-4 is greater than the length of the third light-emitting unit 201-3. For example, the end of the second partition sub-part 312 away from the first partition sub-part 311 is flush with the outer boundary of the fourth light-emitting unit 201-4 in the first direction X, so as to maximize the length of the second partition sub-part 312 while ensuring the length of the notch 301.

[0055] Optionally, among the plurality of partition structures 30 arranged on the same sub-pixel row, a plurality of first partition sub-parts 311 are spaced apart in the first direction X, and a plurality of second partition sub-parts 312 are overlapped in the first direction X. Among the plurality of partition structures 30 arranged on the same sub-pixel column, a plurality of second partition sub-parts 312 are spaced apart in the second direction Y, and a plurality of first partition sub-parts 311 are overlapped in the second direction Y, to improve the uniformity of the partition structures 30 arrangement on the driving substrate 10 and further avoid stress concentration when the display panel 100 is bent. Furthermore, among the plurality of partition structures 30 arranged on the same sub-pixel row, any two adjacent partition structures 30 have a third interval; among the plurality of partition structures 30 arranged on the same sub-pixel column, any two adjacent partition structures 30 have a fourth interval, the fourth interval being equal to the third interval, to further improve the uniformity of the partition structures 30 arrangement.

[0056] In one embodiment, referring to Figures 3 to 8, Figure 8 is a detailed structural schematic diagram of some of the light-emitting units 201 and the support pillar 80 in Figure 3. Referring to Figures 3, 6, and 8, the display panel 100 further includes a support pillar 80, which is disposed on the driving substrate 10 and located between some of the light-emitting units 201. The support pillar 80 is disposed corresponding to the notch 301, and a clearance portion is provided in the partition structure 30 near the support pillar 80.

[0057] Specifically, referring to Figure 6, the support post 80 is disposed on the pixel definition layer 60 and located on the periphery of a portion of the first opening 601. The support post 80 is used to support the fine mask when the light-emitting layer in the light-emitting functional layer 20 is deposited using a vapor deposition process. In the thickness direction of the display panel 100, the height of the support post 80 is greater than the height of the partition structure 30.

[0058] Referring to Figure 8, the support column 80 is located in the middle region of one of the repeating units RU and is surrounded by a plurality of light-emitting units 201. The partition portion 31 in the partition structure 30 has a clearance portion 310 near the support column 80 to avoid the support column 80. The clearance portion 310 is located at the connection between the first partition sub-part 311 and the second partition sub-part 312, and the shape of the clearance portion matches the shape of the corresponding light-emitting unit.

[0059] Based on the same inventive concept, this application also provides a display device, which includes the display panel 100 described in one of the foregoing embodiments. This display device can be an organic light-emitting diode display device or other display device, as well as any product or component with display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator that includes this display device; this embodiment is not limited to these.

[0060] As can be seen from the above embodiments:

[0061] In a display panel and display device provided in this application, the display panel includes a driving substrate, a light-emitting functional layer disposed on the driving substrate, and a partition structure. The light-emitting functional layer includes a sub-functional layer, which is divided into a plurality of spaced light-emitting units. The partition structure is located between two adjacent light-emitting units. The sub-functional layer is broken at the position corresponding to the partition structure. The partition structure is an enclosing structure continuously disposed in at least two directions. In some adjacent light-emitting units, at least one light-emitting unit is surrounded by one partition structure. The end of the partition structure forms at least one notch on the outside of the light-emitting unit. In two adjacent light-emitting units, the notch corresponding to one light-emitting unit is staggered from the notch corresponding to the other light-emitting unit. Thus, by using the partition structure between adjacent light-emitting units, the partition structure can disconnect the sub-functional layer on the light-emitting functional layer to block the lateral conductivity of the sub-functional layer and improve crosstalk between adjacent light-emitting units. Moreover, the partition structure is provided with at least one notch, and the notches corresponding to adjacent light-emitting units are staggered to improve the isolation effect of the partition structure and better improve the crosstalk between adjacent light-emitting units.

[0062] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0063] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel comprising: Drive substrate; A light-emitting functional layer is disposed on the driving substrate. The light-emitting functional layer includes a sub-functional layer. The light-emitting functional layer is divided into a plurality of spaced light-emitting units. The plurality of light-emitting units are arranged in a sub-pixel row in a first direction and in a sub-pixel column in a second direction. The first direction and the second direction intersect. A partition structure is disposed on the driving substrate and located between two adjacent light-emitting units, and the sub-functional layer is disconnected at the position corresponding to the partition structure; The partition structure is an enclosing structure continuously arranged in at least two directions. Among the partially adjacent light-emitting units, at least one light-emitting unit is surrounded by a partition structure. The end of the partition structure forms at least one notch on the outside of the light-emitting unit. In two adjacent light-emitting units on the sub-pixel row or the sub-pixel column, the notch corresponding to one light-emitting unit is staggered from the notch corresponding to the other light-emitting unit.

2. The display panel according to claim 1, wherein, Each partition structure includes two partition portions arranged in a centrally symmetrical manner, and the notch is formed at the junction of the two partition portions. In two adjacent partition structures, there is a partition portion between the two adjacent notches.

3. The display panel according to claim 2, wherein, In the two partition structures corresponding to two adjacent light-emitting units, each partition includes a first partition sub-part and a second partition sub-part connected to each other. The first partition sub-part of two adjacent partitions is located between the two adjacent light-emitting units, and the second partition sub-part of two adjacent partitions is located on both sides of the two adjacent light-emitting units.

4. The display panel according to claim 3, wherein, There is a first interval between two adjacent light-emitting units in the first direction, and a second interval between two adjacent light-emitting units in the second direction; The first partition sub-part is located within the first interval, and two first partition sub-parts are provided within the same first interval. The second partition sub-part is located within the second interval, and two second partition sub-parts are provided within the same second interval.

5. The display panel according to claim 4, wherein, Two adjacent light-emitting units in the first direction are a first light-emitting unit and a second light-emitting unit. In the second direction, the length of the first light-emitting unit is less than the length of the second light-emitting unit, and the length of the overlapping area of ​​the two first partition sub-parts located between the first light-emitting unit and the second light-emitting unit is greater than the length of the first light-emitting unit. In the second direction, two adjacent light-emitting units are a third light-emitting unit and a fourth light-emitting unit. In the first direction, the length of the third light-emitting unit is less than the length of the fourth light-emitting unit, and the length of the overlapping area of ​​the two second partition sub-parts located between the third light-emitting unit and the fourth light-emitting unit is greater than the length of the third light-emitting unit.

6. The display panel according to claim 5, wherein, The end of the first partition sub-part away from the second partition sub-part is flush with the outer boundary of the second light-emitting unit in the second direction; The end of the second partition sub-part away from the first partition sub-part is flush with the outer boundary of the fourth light-emitting unit in the first direction.

7. The display panel according to claim 1, wherein, The display panel also includes: A support post is disposed on the driving substrate and located between some of the light-emitting units. The support post is disposed corresponding to the notch. A clearance portion is disposed on a portion of the partition structure close to the support post. The shape of the clearance portion matches the shape of the corresponding light-emitting unit.

8. The display panel according to any one of claims 1 to 7, wherein, The display panel also includes: A first electrode layer is located between the driving substrate and the light-emitting functional layer. The first electrode layer includes a plurality of first electrodes arranged at intervals, and the first electrodes are arranged in a one-to-one correspondence with the light-emitting units. The second electrode layer is located on the side of the light-emitting functional layer away from the driving substrate, and the second electrode layer is disconnected at the position corresponding to the partition structure; The light-emitting functional layer includes a first common organic layer and a first light-emitting layer stacked together. The first light-emitting layer is located on the side of the first common organic layer away from the driving substrate. The sub-functional layer includes the first common organic layer.

9. The display panel according to claim 8, wherein, The light-emitting functional layer also includes: The second light-emitting layer is located on the side of the first light-emitting layer away from the driving substrate; A charge generation layer is located between the first light-emitting layer and the second light-emitting layer, and the sub-functional layer further includes the charge generation layer.

10. The display panel according to claim 9, wherein, The display panel also includes: A pixel definition layer is located on the side of the first electrode layer away from the driving substrate. The pixel definition layer has a first opening at the position corresponding to the first electrode. The first opening is arranged in a one-to-one correspondence with the light-emitting unit. Each light-emitting unit includes a first common organic layer, a first light-emitting layer, a charge-generating layer and a second light-emitting layer corresponding to the first opening. The partition structure is located on the pixel definition layer.

11. A display device comprising a display panel, the display panel comprising: Drive substrate; A light-emitting functional layer is disposed on the driving substrate. The light-emitting functional layer includes a sub-functional layer. The light-emitting functional layer is divided into a plurality of spaced light-emitting units. The plurality of light-emitting units are arranged in a sub-pixel row in a first direction and in a sub-pixel column in a second direction. The first direction and the second direction intersect. A partition structure is disposed on the driving substrate and located between two adjacent light-emitting units, and the sub-functional layer is disconnected at the position corresponding to the partition structure; The partition structure is an enclosing structure continuously arranged in at least two directions. Among the partially adjacent light-emitting units, at least one light-emitting unit is surrounded by a partition structure. The end of the partition structure forms at least one notch on the outside of the light-emitting unit. In two adjacent light-emitting units on the sub-pixel row or the sub-pixel column, the notch corresponding to one light-emitting unit is staggered from the notch corresponding to the other light-emitting unit.

12. The display device according to claim 11, wherein, Each partition structure includes two partition portions arranged in a centrally symmetrical manner, and the notch is formed at the junction of the two partition portions. In two adjacent partition structures, there is a partition portion between the two adjacent notches.

13. The display device according to claim 12, wherein, In the two partition structures corresponding to two adjacent light-emitting units, each partition includes a first partition sub-part and a second partition sub-part connected to each other. The first partition sub-part of two adjacent partitions is located between the two adjacent light-emitting units, and the second partition sub-part of two adjacent partitions is located on both sides of the two adjacent light-emitting units.

14. The display device according to claim 13, wherein, There is a first interval between two adjacent light-emitting units in the first direction, and a second interval between two adjacent light-emitting units in the second direction; The first partition sub-part is located within the first interval, and two first partition sub-parts are provided within the same first interval. The second partition sub-part is located within the second interval, and two second partition sub-parts are provided within the same second interval.

15. The display device according to claim 14, wherein, Two adjacent light-emitting units in the first direction are a first light-emitting unit and a second light-emitting unit. In the second direction, the length of the first light-emitting unit is less than the length of the second light-emitting unit, and the length of the overlapping area of ​​the two first partition sub-parts located between the first light-emitting unit and the second light-emitting unit is greater than the length of the first light-emitting unit. In the second direction, two adjacent light-emitting units are a third light-emitting unit and a fourth light-emitting unit. In the first direction, the length of the third light-emitting unit is less than the length of the fourth light-emitting unit, and the length of the overlapping area of ​​the two second partition sub-parts located between the third light-emitting unit and the fourth light-emitting unit is greater than the length of the third light-emitting unit.

16. The display device according to claim 15, wherein, The end of the first partition sub-part away from the second partition sub-part is flush with the outer boundary of the second light-emitting unit in the second direction; The end of the second partition sub-part away from the first partition sub-part is flush with the outer boundary of the fourth light-emitting unit in the first direction.

17. The display device according to claim 11, wherein, The display panel also includes: A support post is disposed on the driving substrate and located between some of the light-emitting units. The support post is disposed corresponding to the notch. A clearance portion is disposed on a portion of the partition structure close to the support post. The shape of the clearance portion matches the shape of the corresponding light-emitting unit.

18. The display device according to any one of claims 11 to 17, wherein, The display panel also includes: A first electrode layer is located between the driving substrate and the light-emitting functional layer. The first electrode layer includes a plurality of first electrodes arranged at intervals, and the first electrodes are arranged in a one-to-one correspondence with the light-emitting units. The second electrode layer is located on the side of the light-emitting functional layer away from the driving substrate, and the second electrode layer is disconnected at the position corresponding to the partition structure; The light-emitting functional layer includes a first common organic layer and a first light-emitting layer stacked together. The first light-emitting layer is located on the side of the first common organic layer away from the driving substrate. The sub-functional layer includes the first common organic layer.

19. The display device according to claim 18, wherein, The light-emitting functional layer also includes: The second light-emitting layer is located on the side of the first light-emitting layer away from the driving substrate; A charge generation layer is located between the first light-emitting layer and the second light-emitting layer, and the sub-functional layer further includes the charge generation layer.

20. The display device according to claim 19, wherein, The display panel also includes: A pixel definition layer is located on the side of the first electrode layer away from the driving substrate. The pixel definition layer has a first opening at the position corresponding to the first electrode. The first opening is arranged in a one-to-one correspondence with the light-emitting unit. Each light-emitting unit includes a first common organic layer, a first light-emitting layer, a charge-generating layer and a second light-emitting layer corresponding to the first opening. The partition structure is located on the pixel definition layer.

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