Display panel and display device

Abstract

According to the display panel and the display device, a light-emitting function layer of the display panel is divided into a plurality of light-emitting units arranged at intervals, a partition structure is located between every two adjacent light-emitting units, and a sub-function layer of the light-emitting function layer is disconnected at the position corresponding to the partition structure. The partition structure is a surrounding structure which is continuously arranged in at least two directions, in the partially adjacent light emitting units, at least one light emitting unit is surrounded by one partition structure, at least one notch is formed in the position, on the outer side of the light emitting unit, of the end of the partition structure, and in every two adjacent light emitting units, at least one notch is formed in the outer side of the light emitting unit. The notch corresponding to one light-emitting unit and the notch corresponding to the other light-emitting unit are arranged in a staggered mode, so that the partition effect of the partition structure is improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) display has become a highly competitive and promising next-generation display technology due to its all-solid-state structure, high brightness, full viewing angle, fast response speed, wide operating temperature range and other advantages. Its 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 into the organic light-emitting material layer. The electrons and holes combine in the light-emitting layer to release energy, excite the organic light-emitting material molecules to form excited state molecules, and 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, which gradually reduces the spacing between pixel units. In addition, as the luminous efficiency of the luminescent materials used in OLED displays increases, high brightness can be achieved through low current and low voltage, thereby reducing power consumption. Due to the reduction in the spacing between pixel units and the fact that the luminescent materials can emit light with a small amount of current, a small amount of current leaking from one pixel unit to another adjacent pixel unit will cause the above-mentioned high-luminescent-efficiency luminescent material to emit light, so that when a certain pixel emits light, the adjacent pixels will also emit light weakly, resulting in the phenomenon of concomitant light emission or crosstalk, which reduces the quality and color purity of the panel. Summary of the invention

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

[0005] To solve the above problems, the technical solutions provided by this application are as follows:

[0006] An embodiment of the present application provides a display panel, comprising:

[0007] Driver substrate;

[0008] A light-emitting functional layer is arranged on the driving substrate, the light-emitting functional layer includes a sub-functional layer, and the light-emitting functional layer is divided into a plurality of light-emitting units arranged at intervals, the plurality of light-emitting units are arranged in a sub-pixel row in a first direction, and the plurality of light-emitting units are arranged in a sub-pixel column in a second direction, and the first direction and the second direction are arranged to intersect;

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

[0010] Wherein, the partition structure is an enclosure structure continuously arranged in at least two directions, and among some adjacent light-emitting units, at least one light-emitting unit is surrounded by a partition structure, and the end of the partition structure forms at least one notch on the outside of the light-emitting unit, and among 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 with the notch corresponding to the other light-emitting unit.

[0011] In the display panel provided in the embodiment of the present application, each of the partition structures includes two partition parts that are centrally symmetrically arranged, the gap is formed at the junction of the two partition parts, and in two adjacent partition structures, there is one partition part between two adjacent gaps.

[0012] In the display panel provided in the embodiment of the present application, in the two partition structures corresponding to two adjacent light-emitting units, each partition portion includes a first partition sub-portion and a second partition sub-portion that are connected to each other, and the first partition sub-portion of the two adjacent partition portions is located between the two adjacent light-emitting units, and the second partition sub-portions of the two adjacent partition portions are located on both sides of the two adjacent light-emitting units.

[0013] In the display panel provided in the embodiment of the present application, there is a first interval between two adjacent light-emitting units in the first direction, and there is a second interval between two adjacent light-emitting units in the second direction;

[0014] The first partition sub-section is located in the first interval, and two first partition sub-sections are arranged in the same first interval. The second partition sub-section is located in the second interval, and two second partition sub-sections are arranged in the same second interval.

[0015] In the display panel provided in the embodiment of the present application, the 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 smaller than the length of the second light-emitting unit, and the length of the overlapping area of ​​the two first partition sub-portions between the first light-emitting unit and the second light-emitting unit is larger than the length of the first light-emitting unit;

[0016] The two adjacent light-emitting units in the second direction are the third light-emitting unit and the fourth light-emitting unit. In the first direction, the length of the third light-emitting unit is smaller than the length of the fourth light-emitting unit, and the length of the overlapping area of ​​the two second partition sub-portions located between the third light-emitting unit and the fourth light-emitting unit is greater than the length of the third light-emitting unit.

[0017] In the display panel provided in the embodiment of the present application, an end of the first partition sub-portion away from the second partition sub-portion is flush with an outer boundary of the second light-emitting unit in the second direction;

[0018] An end of the second partition sub-portion away from the first partition sub-portion is flush with an outer boundary of the fourth light emitting unit in the first direction.

[0019] In the display panel provided in the embodiment of the present application, the display panel further includes:

[0020] A support column is arranged on the driving substrate and is located between some of the light-emitting units. The support column is arranged corresponding to the notch, and a relief portion is arranged on part of the partition structure close to the support column. The shape of the relief portion matches the shape of the corresponding light-emitting unit.

[0021] In the display panel provided in the embodiment of the present application, the display panel further includes:

[0022] A first electrode layer, located between the driving substrate and the light-emitting functional layer, the first electrode layer comprising a plurality of first electrodes arranged at intervals, the first electrodes being arranged in one-to-one correspondence with the light-emitting units;

[0023] A second electrode layer is located on a side of the light-emitting functional layer away from the driving substrate, and the second electrode layer is disconnected at a position corresponding to the partition structure;

[0024] The light-emitting functional layer includes a first common organic layer and a first light-emitting layer which are stacked, the first light-emitting layer is located on a side of the first common organic layer away from the driving substrate, and the sub-functional layer includes the first common organic layer.

[0025] In the display panel provided in the embodiment of the present application, the light-emitting functional layer further includes:

[0026] a second light-emitting layer, located on a side of the first light-emitting layer away from the driving substrate;

[0027] The charge generation layer is located between the first light-emitting layer and the second light-emitting layer, and the sub-functional layer also includes the charge generation layer.

[0028] In the display panel provided in the embodiment of the present application, the display panel further includes:

[0029] a pixel definition layer, located on a side of the first electrode layer away from the driving substrate, the pixel definition layer being provided with a first opening at a position corresponding to the first electrode, the first opening being provided in a one-to-one correspondence with the light-emitting units, each of the light-emitting units comprising the first common organic layer corresponding to the first opening, the first light-emitting layer, the charge generation layer, and the second light-emitting layer;

[0030] The partition structure is located on the pixel definition layer.

[0031] An embodiment of the present application further provides a display device, which includes the display panel described in one of the aforementioned embodiments.

[0032] The beneficial effects of the present application are as follows: in the display panel and the display device provided by the present application, the display panel includes a driving substrate and a light-emitting functional layer and a partition structure arranged 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 light-emitting units arranged at intervals, the partition structure is located between two adjacent light-emitting units, the sub-functional layer is disconnected at a position corresponding to the partition structure, the partition structure is an enclosure structure continuously arranged in at least two directions, at least one of the light-emitting units in some adjacent light-emitting units is surrounded by one of the partition structures, at least one notch is formed on the outer side of the light-emitting unit at the end of the partition structure, and in two adjacent light-emitting units, the notch corresponding to one of the light-emitting units is staggered with the notch corresponding to the other light-emitting unit; in this way, by providing a 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 conduction of the sub-functional layer and improve the crosstalk between adjacent light-emitting units, and at least one notch is arranged on the partition structure, and the notches corresponding to adjacent light-emitting units are staggered to enhance the partition effect of the partition structure and better improve the crosstalk between adjacent light-emitting units. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of the lateral conductive path of the light-emitting functional layer on an OLED display panel is shown.

[0035] Figure 2 A schematic diagram showing a partition structure provided between light-emitting units.

[0036] Figure 3 A schematic diagram of a planar structure of a display panel provided in an embodiment of the present application.

[0037] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the M-M' direction.

[0038] Figure 5 for Figure 4 Detailed structural diagram of the light-emitting functional layer.

[0039] Figure 6 A schematic diagram of some detailed structures of the drive substrate provided in an embodiment of the present application.

[0040] Figure 7 for Figure 3 Detailed structural diagram of the middle part of the light-emitting unit and partition structure.

[0041] Figure 8 for Figure 3 Detailed structural diagram of the middle part of the light-emitting unit and the supporting column. DETAILED DESCRIPTION

[0042] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in the present application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and regions is exaggerated for clear understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0043] With regard to the crosstalk problem in OLED displays, the inventors of the present application have found that it is mainly due to the lateral conductivity of some film layers in the light-emitting functional layer. Figure 1 and Figure 2 , Figure 1 A schematic diagram of the lateral conductive path of the light-emitting functional layer on an OLED display panel is shown. Figure 2 A schematic diagram showing a partition structure between light-emitting units. Figure 1A light-emitting functional layer 20' is disposed on the driving substrate 10', and the light-emitting functional layer 20' is divided into a plurality of light-emitting units 201', each light-emitting unit 201' is disposed corresponding to 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 part of the first electrode 41' and the driving substrate 10', and a first opening is disposed on the pixel definition layer at a 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.

[0044] 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 and a hole transport layer. The first common organic layer 22' has good charge transport performance and is prone to cause lateral leakage current, such as Figure 1 The charges shown in the diagram move laterally from one light-emitting unit 201' to an adjacent light-emitting unit 201' through the first common organic layer 22', thereby causing the adjacent light-emitting unit 201' to light up secretly, thus causing crosstalk. Especially for tandem devices, the lateral leakage current phenomenon is more serious.

[0045] A tandem device refers to a device in which the light-emitting functional layer 20' has a double light-emitting layer in the thickness direction of the display panel, and a charge generation layer 24' (CGL) is arranged between the double light-emitting layers. Figure 1 As shown, a charge generation layer 24' is provided between the first light-emitting layer 21' and the second light-emitting layer 23', and a second common organic layer 25' can also be provided between the charge generation layer 24' and the second light-emitting layer 23'. Tandem devices have the advantages of higher brightness, longer life, and lower power consumption. However, the organic functional layers in the tandem device, such as the first common organic layer 22' and the second common organic layer 25', have certain lateral conductivity in addition to longitudinal conductivity, especially the tandem device adds a charge generation layer 24', which is used to connect two light-emitting layers in series, has strong charge generation and separation capabilities, and has strong conductivity itself, which will significantly increase the crosstalk between the light-emitting units 201' and affect the display effect of the display panel. Moreover, the severity of leakage between the light-emitting units 201' is also different. Among the adjacent light-emitting units 201', one light-emitting unit 201' may have a more serious leakage problem than other light-emitting units 201', thereby further aggravating the local crosstalk.

[0046] In order to improve the crosstalk problem between the light-emitting units 201', the inventors found that the lateral leakage current can be blocked by providing a partition structure 30' between adjacent light-emitting units 201'. Figure 2As shown, a long strip partition structure 30' is provided between adjacent light-emitting units 201', and 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 partition structure 30' design cannot completely isolate the leakage current between adjacent light-emitting units 201', and part of the leakage current will bypass the partition structure 30' to reach the adjacent light-emitting unit 201', causing the adjacent light-emitting unit 201' to be illuminated secretly; moreover, this design has the same partition effect on all light-emitting units 201', and cannot perform targeted partitioning on the light-emitting units 201' with severe leakage, resulting in limited improvement in the leakage current from the light-emitting units 201' with severe leakage to the adjacent light-emitting units 201', as shown in FIG. Figure 2 As shown, the light emitting unit 201' with serious leakage current leaks current to the adjacent light emitting unit 201' through the gaps of the surrounding partition structures 30', resulting in limited improvement effect on the crosstalk problem and failure to meet the high resolution requirements of high-end products.

[0047] To this end, the inventor of the present application proposed a display panel and a display device after further exploration and research.

[0048] Please refer to Figures 3 to 6 , Figure 3 A schematic diagram of a planar structure of a display panel provided in an embodiment of the present application, Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the M-M' direction, Figure 5 for Figure 4 Detailed structural diagram of the light-emitting functional layer. Figure 6 This is a schematic diagram of some details of the driving substrate provided in the embodiment of the present application. Figure 3 and Figure 4The display panel 100 includes a driving substrate 10, and a light-emitting functional layer 20 and a partition structure 30 disposed on the driving substrate 10. The light-emitting functional layer 20 is divided into a plurality of light-emitting units 201 arranged at intervals, and the plurality of light-emitting units 201 are arranged in sub-pixel rows in a first direction X, and the plurality of light-emitting units 201 are arranged in sub-pixel columns in a second direction Y, and the first direction X and the second direction Y are arranged to 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, and the sub-functional layer is disconnected at a position corresponding to the partition structure 30. In which, the partition structure 30 is an enclosure structure continuously arranged in at least two directions, and among some adjacent light-emitting units 201, at least one light-emitting unit 201 is surrounded by a partition structure 30, and the end of the partition structure 30 forms at least one notch 301 on the outside of the light-emitting unit 201. Among the 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 with the notch 301 corresponding to the other light-emitting unit 201.

[0049] In this way, by inserting 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 conduction of the sub-functional layer and improve the crosstalk between adjacent light-emitting units 201. Moreover, at least one notch 301 is provided on the partition structure 30, and the notches 301 corresponding to adjacent light-emitting units 201 are staggered, which can enhance the partition effect of the partition structure 30 and better improve the crosstalk between adjacent light-emitting units 201.

[0050] Specifically, continue to refer to Figure 3 Each of the partition structures 30 includes two partition parts 31 that are centrally symmetrically arranged to avoid stress concentration when the display panel 100 needs to be bent. The notch 301 is formed at the junction of the two partition parts 31, so that each of the partition structures 30 includes two opposite notches 301. In two adjacent partition structures 30, there is a partition part 31 between the two adjacent notches 301, so that in two adjacent light-emitting units 201, the leakage current of one light-emitting unit 201 moving laterally through its corresponding notch 301 is blocked by the partition part 31 corresponding to the other light-emitting unit 201, thereby avoiding crosstalk between adjacent light-emitting units 201.

[0051] In one embodiment, a plurality of the light-emitting units 201 are arranged in sub-pixel rows in a first direction X, and a plurality of the light-emitting units 201 are arranged in sub-pixel columns in a second direction Y, the first direction X and the second direction Y are intersected, a first interval is provided between two adjacent light-emitting units 201 in the first direction X, and a second interval is provided between two adjacent light-emitting units 201 in the second direction Y.

[0052] Exemplarily, 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 of the repeating units RU includes four light-emitting units 201, and the four light-emitting units 201 include a first color light-emitting unit 201-R, a 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, the third color light-emitting unit 201-G is a green light-emitting unit 201, and 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.

[0053] The first color light emitting unit 201-R is disposed adjacent to the third light emitting unit 201-3 in both the first direction X and the second direction Y, and the second color light emitting unit 201-B is disposed adjacent to the third light emitting unit 201-3 in both the first direction X and the second direction Y, and the long axis directions of the two third light emitting units 201-3 are different, for example, the long axis of one of the third light emitting units 201-3 extends along the first direction X, and the long axis of the other third light emitting unit 201-3 extends along the second direction Y. It should be noted that the arrangement of the light emitting units 201 in this embodiment is only for illustration, and the present application is not limited thereto.

[0054] Taking the second color light emitting unit 201-B and the third light emitting unit 201-3 adjacently arranged in the first direction X as an example, the second color light emitting unit 201-B is surrounded by one partition structure 30, and the third light emitting unit 201-3 is surrounded by one partition structure 30. The partition structure 30 outside the second light emitting unit 201-2 has two notches 301, and the partition structure 30 outside the third light emitting unit 201-3 has two notches 301. There is one partition part 31 between each notch 301 corresponding to the second light emitting unit 201-2 and the notch 301 corresponding to the third light emitting unit 201-3, and there are two partition parts 31 between the second light emitting unit 201-2 and the third light emitting unit 201-3, so as to improve the partition effect of the partition structure 30.

[0055] Reference 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 first electrodes 41 arranged at intervals. The first electrodes 41 are arranged one-to-one with the light-emitting units 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 arranged on the entire surface, wherein the first electrode 41 is an anode and the second electrode layer 50 is a cathode. The light-emitting unit 201 emits light under the joint action of the first electrode 41 and the second electrode layer 50.

[0056] The display panel 100 further includes a pixel definition layer 60, which is located on a side of the first electrode layer 40 away from the drive substrate 10. The pixel definition layer 60 is provided with a first opening 601 at a position corresponding to the first electrode 41, so that the pixel definition layer 60 covers part of the first electrode 41 and the drive substrate 10. The first opening 601 is provided in a one-to-one correspondence with the light-emitting units 201, and each of the light-emitting units 201 corresponds to one first opening 601, and each of the first openings 601 corresponds to one of the light-emitting units 201. The size and shape of the light-emitting units 201 are respectively matched with the size and shape of the first opening 601. For example, if the shape of the third color light-emitting unit 201-G is an ellipse, the shape of the first opening 601 corresponding to the second color light-emitting unit 201-B is also an ellipse. Optionally, the material of the pixel definition layer 60 may include an organic material, such as polyimide, acrylic or polyethylene terephthalate.

[0057] 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 an organic photoresist material, etc. Of course, the present application is not limited to the material and the location of the partition structure 30. For example, the partition structure 30 can be integrally formed with the pixel definition layer 60, that is, when the structure of the pixel definition layer 60 is formed, the partition structure 30 is formed simultaneously; or, in some other embodiments, the pixel definition layer 60 is further formed with a second opening, and the partition structure 30 is disposed in the second opening to reduce the thickness of the display panel 100.

[0058] The longitudinal cross-section of the partition portion 31 is inverted trapezoidal, that is, the area of ​​the bottom of the partition portion 31 is smaller than the area of ​​the top of the partition portion 31, so that the partition portion 31 forms an undercut structure, wherein the bottom of the partition portion 31 is close to the drive substrate 10, and the top of the partition portion 31 is located on the side of the bottom away from the drive substrate 10. The light-emitting functional layer 20 is disconnected at the position of the partition portion 31 to block the lateral leakage current of the sub-functional layer in the light-emitting functional layer 20. The second electrode layer 50 is also disconnected at the position of the partition portion 31, and the setting of the notch 301 on the partition structure 30 can connect the second electrode layers 50 corresponding to each of the light-emitting units 201 together, so as to reduce the influence of the partition structure 30 on the voltage drop (IR Drop) on the second electrode layer 50.

[0059] Reference 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, and the first common organic layer 22 is located between the first light-emitting layer 21 and the driving substrate 10. The sub-functional layer includes the first common organic layer 22, and the first common organic layer 22 is disconnected at the position 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 arranged at a layer of the light-emitting layer away from the driving substrate 10. The first light-emitting layer 21 is used to emit light of a corresponding color.

[0060] In some embodiments, the light-emitting functional layer 20 further includes a second light-emitting layer 23 and a charge generation layer 24. The charge generation layer 24 is located between the first light-emitting layer 21 and the second light-emitting layer 23. The charge generation 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, so that the display panel 100 can achieve higher brightness, longer life, and lower power consumption. The charge generation layer 24 has a strong charge generation and separation capability and a strong electrical conductivity. The material of the charge generation layer 24 may include an n-type doped organic layer / inorganic metal oxide, such as Alq3:Mg / WO3, etc.; or, an n-type doped organic layer / organic layer, such as Alq3:Li / HAT-CN; or, an n-type doped organic layer / p-type doped organic layer, such as BPhen:Cs / NPB:F4-TCNQ, etc.; or, a non-doped type, such as F 16 CuPc / CuPc and Al / WO3 / Au, etc.

[0061] The sub-functional layer further includes the charge generation layer 24, and the charge generation layer 24 is disconnected at the location of the partition structure 30. Of course, the light-emitting functional layer 20 may further include a second common organic layer 25 located between the charge generation layer 24 and the second light-emitting layer 23, and the sub-functional layer further includes the second common organic layer 25, and the second common organic layer 25 is disconnected at the location of the partition structure 30. The second common organic layer 25 includes at least one layer of a hole injection layer and a hole transport layer.

[0062] Each of the light-emitting units 201 includes the first common organic layer 22 corresponding to the first opening 601, the first light-emitting layer 21, the charge generation layer 24 and the second light-emitting layer 23. Of course, when the light-emitting functional layer 20 also includes other common layers, each of the light-emitting units 201 also includes corresponding other common layers.

[0063] Of course, the display panel 100 further includes an encapsulation layer 70 covering the second electrode layer 50 on the side away from the driving substrate 10, and the encapsulation layer 70 is used to protect the light-emitting unit 201 to isolate water and oxygen, and prevent water and oxygen from invading and causing failure of the light-emitting unit 201. 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 that are stacked.

[0064] Reference Figure 6The driving substrate 10 includes a substrate 11 and a transistor 12 arranged on the substrate 11, and the transistor 12 is connected to the corresponding first electrode 41. Optionally, the driving substrate 10 also includes a bridging electrode 13 arranged between the transistor 12 and the first electrode 41, and the first electrode 41 is connected to the corresponding transistor 12 through the bridging electrode 13.

[0065] The substrate 11 includes a first sub-substrate 111, a barrier layer 112, a second sub-substrate 113 and a buffer layer 114 which are stacked, wherein the materials of the first sub-substrate 111 and the second sub-substrate 113 include polyimide and the like, and the materials of the barrier layer 112 and the buffer layer 114 include inorganic materials such as silicon oxide and silicon nitride.

[0066] The transistor 12 includes an active layer 121, a first gate electrode 122, a third electrode 123, a source electrode 124, and a drain electrode 125. Of course, the driving substrate 10 also includes a plurality of insulating layers, such as a first gate insulating layer 141 between the active layer 121 and the first gate electrode 122, a second gate insulating layer 142 between the first gate electrode 122 and the third electrode 123, an interlayer insulating layer 143 between the third electrode 123 and the source electrode 124, the drain electrode 125, a first planar layer 144 between the source electrode 124, the drain electrode 125 and the bridge electrode 13, a second planar layer 145 between the bridge electrode 13 and the first electrode 41, and the pixel definition layer 60 covers a portion of the first electrode 41 and the second planar layer 145.

[0067] In one embodiment, referring to Figures 3 to 7 , Figure 7 for Figure 3 The detailed structural diagram of the middle part light emitting unit 201 and the partition structure 30. Figure 3 and Figure 7 In the two partition structures 30 corresponding to the two adjacent light-emitting units 201, each partition portion 31 includes a first partition sub-portion 311 and a second partition sub-portion 312 connected to each other, the first partition sub-portion 311 of the two adjacent partition portions 31 is located between the two adjacent light-emitting units 201, and the second partition sub-portion 312 of the two adjacent partition portions 31 is located on both sides of the two adjacent light-emitting units 201.

[0068] The first partition sub-portion 311 is located in the first interval and extends along the second direction Y. Two first partition sub-portions 311 are arranged in the same first interval. The second partition sub-portion 312 is located in the second interval and extends along the first direction X. Two second partition sub-portions 312 are arranged in the same second interval. The surface shapes of the first partition sub-section 311 and the second partition sub-section 312 are both long strips, for example, they can be straight, curved, arc-shaped, etc. When the surface shapes of the first partition sub-section 311 and the second partition sub-section 312 are both long strips, the surface shape of the partition section 31 composed of the first partition sub-section 311 and the second partition sub-section 312 is quasi-"L"-shaped. At this time, each of the partition structures 30 is composed of two quasi-"L"-shaped partition sections 31, one partition section 31 is a positive "L" shape, and the other partition section 31 is an inverted "L" shape, and in the two partition structures 30 corresponding to the two adjacent light-emitting units 201, in the two adjacent partition sections 31, one partition section 31 is a positive "L" shape, and the other partition section 31 is an inverted "L" shape.

[0069] Among them, the "L"-type means that the first partition sub-section 311 and the second partition sub-section 312 form an approximately "L"-shaped shape, and the angle between the first partition sub-section 311 and the second partition sub-section 312 is not limited to vertical. For example, the angle between the first partition sub-section 311 and the second partition sub-section 312 can also be greater than 90 degrees and less than 180 degrees, or the angle between the first partition sub-section 311 and the second partition sub-section 312 can also be less than 90 degrees. The angle between the first partition sub-section 311 and the second partition sub-section 312 corresponds to the corresponding light-emitting unit 201, that is, the surface shape of the partition section 31 can match the shape of the corresponding light-emitting unit 201.

[0070] The two adjacent light-emitting units 201 in the first direction X are the first light-emitting unit 201-1 and the second light-emitting unit 201-2. In the second direction Y, the length of the first light-emitting unit 201-1 is smaller than the length of the second light-emitting unit 201-2. The length L1 of the overlapping area of ​​the two first partition sub-portions 311 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-portion 311 away from the second partition sub-portion 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-portion 311 while ensuring the length of the gap 301.

[0071] 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 smaller than the length of the fourth light-emitting unit 201-4. The length L2 of the overlapping area of ​​the two second partition sub-portions 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-portion 312 away from the first partition sub-portion 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-portion 312 while ensuring the length of the gap 301.

[0072] Optionally, in the plurality of partition structures 30 arranged on the same sub-pixel row, the plurality of first partition sub-portions 311 are arranged at intervals in the first direction X, and the plurality of second partition sub-portions 312 are arranged overlappingly in the first direction X. In the plurality of partition structures 30 arranged on the same sub-pixel column, the plurality of second partition sub-portions 312 are arranged at intervals in the second direction Y, and the plurality of first partition sub-portions 311 are arranged overlappingly in the second direction Y, so as to improve the uniformity of the arrangement of the partition structure 30 on the drive substrate 10, and further avoid stress concentration when the display panel 100 is bent. Moreover, in the plurality of partition structures 30 arranged on the same sub-pixel row, there is a third interval between any two adjacent partition structures 30; in the plurality of partition structures 30 arranged on the same sub-pixel column, there is a fourth interval between any two adjacent partition structures 30, and the fourth interval is equal to the third interval, so as to further improve the uniformity of the arrangement of the partition structure 30.

[0073] In one embodiment, referring to Figures 3 to 8 , Figure 8 for Figure 3 The detailed structural diagram of the light emitting unit 201 and the support column 80 in the middle part. Figure 3 , Figure 6 and Figure 8 The display panel 100 further includes a support column 80, which is disposed on the driving substrate 10 and located between some of the light-emitting units 201. The support column 80 is disposed corresponding to the notch 301, and a portion of the partition structure 30 close to the support column 80 is provided with an avoidance portion.

[0074] Specifically, refer to Figure 6The support column 80 is disposed on the pixel definition layer 60 and is located around a portion of the first opening 601. The support column 80 is used to support a fine mask when the light-emitting layer in the light-emitting functional layer 20 is evaporated by an evaporation process. In the thickness direction of the display panel 100, the height of the support column 80 is greater than the height of the partition structure 30.

[0075] Reference Figure 8 The support column 80 is located in the middle area of ​​one of the repeating units RU and is surrounded by a plurality of the light emitting units 201. The partition portion 31 in the partition structure 30 is provided with an avoidance portion 310 at a position close to the support column 80 to avoid the support column 80. The avoidance portion 310 is located at the connection between the first partition sub-portion 311 and the second partition sub-portion 312, and the shape of the avoidance portion matches the shape of the corresponding light emitting unit.

[0076] Based on the same inventive concept, the embodiment of the present application further provides a display device, which includes the display panel 100 described in one of the above embodiments. The display device can be a display device such as an organic light emitting diode display device, and any product or component with a display function such as a TV, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigator, etc. including the display device, but the embodiment is not limited thereto.

[0077] According to the above embodiments, it can be seen that:

[0078] In a display surface and a display device provided by the present application, the display panel includes a driving substrate and a light-emitting functional layer and a partition structure arranged 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 light-emitting units arranged at intervals, the partition structure is located between two adjacent light-emitting units, the sub-functional layer is disconnected at a position corresponding to the partition structure, the partition structure is an enclosure structure continuously arranged in at least two directions, at least one of the light-emitting units in some adjacent light-emitting units is surrounded by a partition structure, at least one notch is formed on the outer side of the light-emitting unit at the end of the partition structure, and in two adjacent light-emitting units, the notch corresponding to one light-emitting unit is staggered with the notch corresponding to the other light-emitting unit; in this way, by providing a 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 conduction of the sub-functional layer and improve the crosstalk between adjacent light-emitting units, and at least one notch is arranged on the partition structure, and the notches corresponding to adjacent light-emitting units are staggered to enhance the partition effect of the partition structure and better improve the crosstalk between adjacent light-emitting units.

[0079] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that: include: Driver substrate; A light-emitting functional layer is arranged on the driving substrate, the light-emitting functional layer includes a sub-functional layer, and the light-emitting functional layer is divided into a plurality of light-emitting units arranged at intervals, the plurality of light-emitting units are arranged in a sub-pixel row in a first direction, and the plurality of light-emitting units are arranged in a sub-pixel column in a second direction, and the first direction and the second direction are arranged to intersect; A partition structure is provided on the driving substrate and is located between two adjacent light-emitting units, and the sub-functional layer is disconnected at a position corresponding to the partition structure; Wherein, the partition structure is an enclosure structure continuously arranged in at least two directions, and among some adjacent light-emitting units, at least one light-emitting unit is surrounded by a partition structure, and the end of the partition structure forms at least one notch on the outside of the light-emitting unit, and among 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 with the notch corresponding to the other light-emitting unit.

2. The display panel according to claim 1, characterized in that: Each of the partition structures comprises two partition parts which are centrally symmetrically arranged, the junction of the two partition parts forms the notch, and in two adjacent partition structures, there is one partition part between the two adjacent notches.

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

4. The display panel according to claim 3, characterized in that: There is a first interval between two adjacent light emitting units in the first direction, and there is a second interval between two adjacent light emitting units in the second direction; The first partition sub-section is located in the first interval, and two first partition sub-sections are arranged in the same first interval. The second partition sub-section is located in the second interval, and two second partition sub-sections are arranged in the same second interval.

5. The display panel according to claim 4, characterized in that: The 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 smaller than the length of the second light-emitting unit, and the length of the overlapping area of ​​the two first partition sub-portions located between the first light-emitting unit and the second light-emitting unit is larger than the length of the first light-emitting unit; The two adjacent light-emitting units in the second direction are the third light-emitting unit and the fourth light-emitting unit. In the first direction, the length of the third light-emitting unit is smaller than the length of the fourth light-emitting unit, and the length of the overlapping area of ​​the two second partition sub-portions 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, characterized in that: An end of the first partition sub-portion away from the second partition sub-portion is flush with an outer boundary of the second light-emitting unit in the second direction; An end of the second partition sub-portion away from the first partition sub-portion is flush with an outer boundary of the fourth light emitting unit in the first direction.

7. The display panel according to claim 1, characterized in that: The display panel further includes: A support column is arranged on the driving substrate and is located between some of the light-emitting units. The support column is arranged corresponding to the notch, and a relief portion is arranged on part of the partition structure close to the support column. The shape of the relief portion matches the shape of the corresponding light-emitting unit.

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

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

10. The display panel according to claim 9, characterized in that: The display panel further includes: a pixel definition layer, located on a side of the first electrode layer away from the driving substrate, the pixel definition layer being provided with a first opening at a position corresponding to the first electrode, the first opening being provided in a one-to-one correspondence with the light-emitting units, each of the light-emitting units comprising the first common organic layer corresponding to the first opening, the first light-emitting layer, the charge generation layer, and the second light-emitting layer; The partition structure is located on the pixel definition layer.

11. A display device, characterized in that: The invention comprises the display panel as claimed in any one of claims 1 to 10.

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