WO2022133711A1 - 显示基板和显示装置 - Google Patents

显示基板和显示装置 Download PDF

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Publication number
WO2022133711A1
WO2022133711A1 PCT/CN2020/138247 CN2020138247W WO2022133711A1 WO 2022133711 A1 WO2022133711 A1 WO 2022133711A1 CN 2020138247 W CN2020138247 W CN 2020138247W WO 2022133711 A1 WO2022133711 A1 WO 2022133711A1
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WIPO (PCT)
Prior art keywords
display
light
emitting element
connection unit
base substrate
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PCT/CN2020/138247
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English (en)
French (fr)
Inventor
薛金祥
孙中元
刘文祺
倪静凯
安澈
刘芳
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202080003520.1A priority Critical patent/CN115088077A/zh
Priority to US18/034,078 priority patent/US20230397479A1/en
Priority to PCT/CN2020/138247 priority patent/WO2022133711A1/zh
Publication of WO2022133711A1 publication Critical patent/WO2022133711A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/82—Interconnections, e.g. terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80

Definitions

  • the present application relates to the field of display technology, and in particular, to a display substrate and a display device.
  • bendable, foldable, and stretchable flexible display devices are one of the development directions of today's display technology.
  • each film layer in the display device especially the inorganic layer, has a certain degree of bendability, the amount of stretching is extremely limited.
  • Inorganic layers, organic layers, circuit traces, etc. in the flexible display device will be broken or irreversibly deformed; and if the display substrate of the flexible display device is provided with a stretched area, such as a connection unit or a hollow part, it will take up the flexibility.
  • the area of the display area in the display device causes the pixel density of the flexible display device to be too low and the display effect is poor.
  • an object of the present application is to provide a display substrate that can achieve tensile deformation, and can enable a display device to display high pixel density, high uniformity of light emission, or good display effect.
  • the present application provides a display substrate.
  • the display substrate includes: a base substrate, the base substrate has a stretched area and a plurality of display areas, the plurality of display areas are spaced apart by the stretched area, the The stretched area has a first connecting unit connecting two adjacent display areas and a hollow part jointly defined by a plurality of the first connecting units; and a light-emitting element, the light-emitting element is arranged on the substrate One side of the substrate, and both the stretched area and the display area have the light-emitting element.
  • the display substrate can be stretched and deformed, and the display device with the display substrate has high pixel density during display, high uniformity of light emission, and good display effect.
  • the light emitting element located in the stretched region is disposed on the first connection unit.
  • the light-emitting element located in the stretched region is disposed on the island structure in the hollow portion.
  • a metal wiring layer is provided on one side of the base substrate, the metal wiring layer extends from the display area to the stretched area, and is connected to the stretched area.
  • the light-emitting elements in the area are electrically connected, and when the light-emitting element is arranged on the first connection unit, the metal wiring layer extends to the first connection unit; when the light-emitting element is arranged on the first connection unit When placed on the island structure, the metal wiring layer extends to the hollow portion.
  • the display substrate satisfies any one of the following: (1) the metal wiring layer is disposed on the surface of the base substrate, and the metal wiring layer is far from the base substrate. A first organic layer is also provided on the surface, and a first orthographic projection of the first organic layer on the base substrate and a second orthographic projection of the metal wiring layer on the base substrate have an overlapping area (2) A first organic layer is provided on the surface of the metal wiring layer away from the base substrate, and a second organic layer is provided on the surface of the metal wiring layer close to the base substrate, The first orthographic projection of the first organic layer on the base substrate, the second orthographic projection of the metal wiring layer on the base substrate, and the second orthographic projection of the second organic layer on the base substrate The third orthographic projection on has an overlapping area.
  • the display substrate further includes: a second connection unit connecting the island structure and the display area.
  • the display substrate further includes: a second connection unit, the second connection unit connects the island structure and the first connection unit, and the metal wiring layer is connected along the second connection The unit extends to the island structure and is electrically connected with the light emitting element located on the island structure.
  • the shape of the display area is a quadrilateral, and each of the four top corners of each of the display areas is connected with one of the first connection units, and each of the four first connection units together defines a one of the cutouts.
  • the first connecting unit and the second connecting unit each independently have a bent portion.
  • the first connection unit and the second connection unit independently satisfy at least one of the following conditions: the length is 600 ⁇ m ⁇ 800 ⁇ m; the number of the bending parts is 1 ⁇ 2 .
  • the light-emitting element is at least one of an organic electroluminescent element or a light-emitting diode, and the light-emitting element located in the stretched region is a light-emitting diode.
  • the present application provides a display device.
  • the display device includes the aforementioned display substrate.
  • the display device has high pixel density during display, high uniformity of light emission, and good display effect.
  • FIG. 1 shows a schematic plan view of a display substrate according to an embodiment of the present application.
  • FIG. 2 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 3 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 4 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 5 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 6 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 7 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 8 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 9 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 10 shows a schematic plan view of a display substrate according to another embodiment of the present application.
  • FIG. 11 shows a schematic cross-sectional structure diagram of the display substrate in FIG. 3 of the present application along line AA.
  • FIG. 12 shows another schematic cross-sectional structure diagram of the display substrate in FIG. 3 of the present application along line AA.
  • FIG. 13 shows another schematic cross-sectional structure diagram of the display substrate in FIG. 3 of the present application along line AA.
  • Display substrate 10 Stretching area 11: First connecting unit 111: Bending part 12: Hollow part 122: Island structure 20: Display area 21a, 21b: Second connecting unit 211: Bending part 201a, 201b, 201c : Light-emitting element 301: Base substrate 302: First buffer layer 303: Second buffer layer 304: Active layer 305: First gate 306: Second gate 307: Source 308: First gate insulating layer 309: Second gate insulating layer 310: Interlayer insulating layer 311: Metal wiring layer 312: First organic layer 313: VSS signal line 314: Light emitting element 315: Second organic layer 316: Drain 317: Package structure
  • the present application provides a display substrate.
  • the display substrate 1 includes: a base substrate, the base substrate has a stretched area 10 and a plurality of display areas 20 , and the plurality of display areas 20 are separated by the The stretched areas 10 are spaced apart, and the stretched area 10 has a first connecting unit 11 connecting two adjacent display areas 20 and a hollow portion 12 ( 2); and a light-emitting element (not shown in the figure), the light-emitting element is arranged on one side of the base substrate, and both the stretched area 10 and the display area 20 have all the the light-emitting element.
  • the display substrate 1 Since the display substrate 1 has the stretched region 10 , it can achieve stretch deformation; and, in the display substrate 1 , not only the display region 20 has light-emitting elements, but also the stretched region 10 . It also has the light-emitting element inside, therefore, the display device with the display substrate 1 has high pixel density during display, high uniformity of light emission, and good display effect;
  • the hollow portion 12 jointly defined by the first connecting units 11 can release the strain during stretching when the display substrate 1 is stretched, so that the display substrate 1 can better achieve stretchable deformation.
  • the material of the base substrate is not particularly limited.
  • the material of the base substrate may include flexible materials such as polyimide. , or polyethylene terephthalate, metal, etc. can also be used. In this way, the display substrate 1 can better achieve tensile deformation.
  • the specific shapes and numbers of the first connecting units 11 and the hollowed-out portions 12 in the stretching area are not particularly limited.
  • the shape of the display area 20 may be a quadrilateral, and each of the four top corners of the display area 20
  • One of the first connecting units 11 is respectively connected, and each of the four first connecting units 11 together defines one of the hollow portions 12 .
  • the stretchability of the display substrate 1 is better, and at the same time, more of the light-emitting elements can be arranged in the display area 20 and the stretched area 10 of the display substrate 1 , so as to have the display substrate 1
  • the pixel density of the display device in the realization of display is further improved, and the display effect is further improved.
  • the specific arrangement of the light-emitting elements in the display area may be the arrangement of the light-emitting elements in the display area in a conventional display substrate, for example, as shown in FIG. 3 , FIG. 4 ,
  • the light-emitting element 201a in FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 9 or FIG. 10, which is arranged in the display area 20, can achieve a better light-emitting effect, thereby making the display effect of the display substrate 1 better. good.
  • the light-emitting element 201b located in the stretched area may be disposed on the first connection unit 11; in addition, in other embodiments of the present application
  • the light-emitting element 201c located in the stretched region may also be disposed on the island structure 122 in the hollow portion 12 ; in other embodiments of the present application, refer to FIG. 5 , when the light-emitting element 201 b is provided on the first connection unit 11 .
  • the light-emitting element 201 c may also be disposed on the island structure 122 in the hollow portion 12 at the same time.
  • the structure of the display substrate 1 is simple and easy to realize, and the tensile deformation can be better achieved.
  • the display device with the display substrate has high pixel density during display, high uniformity of light emission, and display effect. it is good.
  • the specific arrangement of the light-emitting elements located in the stretched area is not particularly limited, and it may be electrically connected to the light-emitting elements in the display area through a metal wiring layer to achieve luminous.
  • a metal wiring layer to achieve luminous.
  • the metal wiring layer extends from the display area 20 to the stretched area, and is electrically connected to the light-emitting element located in the stretched area, when the light-emitting element When disposed on the first connecting unit 11 (as shown in the light-emitting element 201b in FIG. 3 ), the metal wiring layer extends to the first connecting unit 11 ; when the light-emitting element is disposed on the island structure When 122 is up (as shown in the light-emitting element 201 c in FIG. 4 ), the metal wiring layer extends to the hollow portion 12 .
  • the light-emitting elements located in the stretched region can be made to emit light better, thereby making the display effect better, and the pixel density of the display substrate during display is significantly improved.
  • the specific arrangement of the metal wiring layer may be that the metal wiring layer 311 is arranged on the surface of the base substrate 301 , and the metal wiring layer 311 is far from the substrate.
  • the surface of the base substrate 301 is further provided with a first organic layer 312 , the first orthographic projection of the first organic layer 312 on the base substrate 301 and the metal wiring layer 311 on the base substrate 301
  • the second orthographic projection above has an overlapping area (refer to FIG. 12 for a schematic diagram of the structure, it should be noted that FIG. 11 , FIG. 12 and FIG. 13 in this document are all cross-sectional structures along the line AA in the display substrate shown in FIG. 3 .
  • a surface of the metal wiring layer 311 away from the base substrate 301 is provided with a The first organic layer 312, a second organic layer 315 is provided on the surface of the metal wiring layer 311 close to the base substrate 301, the first organic layer 312 is the first organic layer 312 on the base substrate 301
  • the orthographic projection, the second orthographic projection of the metal wiring layer 311 on the base substrate 301 and the third orthographic projection of the second organic layer 315 on the base substrate 301 have overlapping areas, so that The metal wiring layer 311 is not connected with the inorganic layer in the display substrate, so that when the display substrate is stretched, the metal wiring layer 311 will not generate a large strain, and it is not easy to break. Therefore, after the display substrate is stretched, the light-emitting element in the stretched area can still have a better display effect.
  • the compensation circuit of the light-emitting element located in the stretched region and the thin-film transistor that controls its light emission can be arranged in the display region 20 (see FIG. 12 for a schematic diagram of the structure), It can also be set in the first connection unit 11 (see FIG. 11 for a schematic diagram of the structure), or can be set on the island structure, which can be set according to actual needs, and will not be repeated here.
  • the compensation circuit for controlling the light-emitting element and the thin film transistor located in the stretched area are arranged in the display area, the metal wiring layer is separated from the display area 20 by extends into the stretched area and is electrically connected to the light-emitting element located in the stretched area.
  • the metal wiring layer extends to the first connection unit 11 (see FIG. 12 for a schematic diagram of the structure); when the light-emitting element is arranged on the island structure, the metal wiring layer extends to the hollow part, so that it can be driven better Light emitting elements located in the stretched region emit light.
  • the specific manner in which the metal wiring layer extends from the display area 20 into the stretched area and is electrically connected with the light-emitting element located in the stretched area Not particularly limited, it may be directly connected (see FIG. 11 and FIG. 13 for the schematic diagram) or through through holes (see FIG. 12 for the structural schematic diagram), which will not be repeated here.
  • the display substrate may further include: a second connection unit 21a, the second connection unit 21a connects the island structure 122 and the display area 20 ;
  • the display substrate may further include: a second connection unit 21b, the second connection unit 21b connects the island structure 122 and the first The connection unit 11 is connected, and the metal wiring layer extends to the island structure 122 along the second connection unit 21 b and is electrically connected to the light emitting element located on the island structure 122 .
  • the structure of the display substrate is simple and easy to realize, and through the arrangement of the second connection unit 21a or the second connection unit 21b, the tensile deformation can be better achieved, and at the same time, the light emission located in the hollow part 12
  • the element can emit light well, so that the display device with the display substrate has high pixel density during display, high uniformity of light emission, and good display effect.
  • the number of the second connection units, the specific connection methods, etc. are not particularly limited.
  • it may be The number of the second connection units connected to one of the island structures 122 is two, wherein one of the second connection units 21b is connected to the first connection unit 11, and the other of the second connection units is connected to the display area 20; in other embodiments of the present application, referring to FIG. 8, the number of the second connection units connected to one of the island structures 122 may be four, and the four The second connection units 21b are all connected with the first connection unit; in still other embodiments of the present application, referring to FIG.
  • the number is four, and the four second connection units are all connected to the display area 20; in addition, in some further embodiments of the present application, referring to FIG. 10 , they may also be connected to one of the island structures
  • the number of the second connection units is four, wherein, two of the second connection units 21 b are connected to the first connection unit 11 , and the other two of the second connection units are connected to the display area 20 . connect. Therefore, the structure of the display substrate can be made simple and easy to realize, and the stretching deformation can be better achieved through the specific arrangement of the second connection unit. It can emit light well, thereby making the display device with the display substrate have higher pixel density during display, higher uniformity of light emission, and better display effect.
  • the aforementioned first connecting unit and the second connecting unit may also have bending portions independently.
  • the first connecting unit 11 also has a bending portion 111 ; in addition, the second connecting unit 21a also has a bending portion 211 . Therefore, the tensile properties of the bent portion are better, which in turn can make the tensile properties of the display substrate better.
  • the length L 1 of the first connection unit and the length L 2 of the second connection unit may each independently be 600 ⁇ m ⁇ 800 ⁇ m; In some embodiments, the length L 1 of the first connection unit and the length L 2 of the second connection unit may each independently be specifically 600 ⁇ m, 650 ⁇ m, 700 ⁇ m, 750 ⁇ m or 800 ⁇ m, etc. Therefore, the length L 1 of the first connecting unit and the length L 2 of the second connecting unit are more suitable, and the tensile performance at the bending portion is better, which can further improve the tensile performance of the display substrate. .
  • the number of the bending portions on the first connecting unit and the second connecting unit is not particularly limited. Specifically, in some embodiments of the present application, all The number of the bent portions on the first connection unit and the second connection unit may be independently one to two. Therefore, the number of the bending portions on the first connecting unit and the second connecting unit is appropriate, which can further improve the tensile performance of the display substrate.
  • the specific types of the light-emitting elements are not particularly limited.
  • the light-emitting elements on the display substrate described in the present application may be organic electroluminescent elements or light-emitting diodes.
  • the strain generated during stretching is lower, and thus the achievable stretching amount is larger, and at the same time, it will not damage the light-emitting element, so that the display effect in the stretched area is further improved.
  • FIG. 1 In some embodiments of the present invention, referring to FIG.
  • the light-emitting element 314 in the display area 20 is an organic electroluminescence element
  • the light-emitting element 314 in the first connection unit 11 in the stretched area is a light-emitting diode
  • the specific structures of the organic electroluminescent element and the light emitting diode can be the specific structures of conventional organic electroluminescent elements or light emitting diodes in the related art, which will not be repeated here.
  • the display substrate may further include structures in conventional display substrates, for example, the first buffer layer 302 , the second buffer layer 303 , the Active layer 304, first gate 305, second gate 306, source 307, first gate insulating layer 308, second gate insulating layer 309, interlayer insulating layer 310, VSS signal line 313, drain 316,
  • the display substrate may further include an encapsulation structure 317 (see FIG. 13 for a schematic diagram of the structure), wherein the specific arrangement of the above-mentioned structures can be related to The specific setting method of the structure is the same in the technology, and will not be repeated here.
  • the light-emitting element 314 is an organic electroluminescent element, it may also include specific structures of conventional organic electroluminescent elements, such as a cathode, an anode, a light-emitting layer, a The specific structure of the pixel defining layer and the like is the same as that of the conventional organic electroluminescent element, which will not be repeated here.
  • the light-emitting element 314 is a light-emitting diode, it may also include the specific structure of a conventional light-emitting diode, which will not be repeated here.
  • the material of the inorganic layer can be selected from single-layer or multi-layer inorganic layers such as silicon oxide, silicon nitride or silicon oxynitride; the active layer
  • the specific material can be inorganic semiconductor materials, such as amorphous silicon and polysilicon, etc.; or can be organic semiconductor materials; can also be oxide semiconductor materials such as Zn, In or Ga, etc.; metal wiring layers, as well as source,
  • the material of the metal lead such as the drain can be a conductive metal such as Ti, Al, Mo or Ag, or a conductive oxide such as ITO, IZO, ZnO, In 2 O 3 , IGO or AZO, and of course, it can also be mixed Conductive particles such as rubber and other conductive materials with high ductility, such as carbon nanotubes, nanosilver wires, etc.; the material of the first organic layer and the second organic layer can be a polymer of polymethyl meth
  • the materials of the anode and the cathode may be conductive metals such as Ti, Al, Mo, or Ag, or may also be Conductive oxides such as ITO, IZO, ZnO, In 2 O 3 , IGO or AZO;
  • the material of the pixel defining layer can be polymers of polymethyl methacrylate and polystyrene, polymer derivatives of phenol groups, acrylic polymers of para-xylene, polymers of aryl ethers, polymers of amides, polymers of fluorides, polymers of para-xylene, polymers of vinyl alcohol and mixtures of the above polymers, etc.
  • the material of the light-emitting layer can be phosphorescent or fluorescent light-emitting material;
  • the encapsulation structure can be either an inorganic-organic-inorganic laminated encapsulation structure, or an inorganic en
  • a protective film layer can be attached to the base substrate through OCA adhesive material, and the material of the protective film layer can be selected from dimethyl silicon Oxane, polyimide, polyethylene terephthalate, etc. will not be repeated here.
  • the material sources are wide, easy to obtain, and the cost is low.
  • the present application provides a display device.
  • the display device includes the aforementioned display substrate.
  • the display device has high pixel density during display, high uniformity of light emission, and good display effect.
  • the display device in addition to the aforementioned display substrate, may also include other necessary structures and components, and those skilled in the art can make supplements and designs according to the specific types and usage requirements of the display device. I won't go into too much detail.
  • the specific type of the display device is not particularly limited, for example, it includes but is not limited to a mobile phone, a tablet computer, a wearable device, a game console, a television, or a vehicle-mounted display.
  • first and second are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plurality means two or more, unless otherwise expressly and specifically defined.

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Abstract

本申请提供了显示基板和显示装置。该显示基板包括：衬底基板，所述衬底基板具有拉伸区域和多个显示区域，多个所述显示区域之间被所述拉伸区域间隔开，所述拉伸区域内具有连接相邻的两个所述显示区域的第一连接单元和多条所述第一连接单元共同限定出的镂空部；和发光元件，所述发光元件设置在所述衬底基板的一侧，且所述拉伸区域与所述显示区域内均具有所述发光元件。

Description

显示基板和显示装置 技术领域
本申请涉及显示技术领域，具体地，涉及显示基板和显示装置。
背景技术
目前，可弯曲、可折叠、可拉伸的柔性显示装置是当今显示技术的发展方向之一。而在相关技术中，显示装置中的各个膜层，尤其是无机层，其虽然具有一定的可弯折性，但可拉伸量都是极其有限的，如果直接进行拉伸，那么在显示装置中的无机层、有机层、电路走线等就会发生破碎或者不可逆的变形；而如果在柔性显示装置的显示基板中，通过设置拉伸区域，例如连接单元或者镂空部等，则会占用柔性显示装置中显示区域的面积，导致柔性显示装置的像素密度过低，显示效果较差。
因而，现有的柔性显示装置的相关技术仍有待改进。
发明内容
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本申请的一个目的在于提出一种可实现拉伸变形、可使得显示装置在显示时的像素密度高、发光的均一性高或者显示效果好的显示基板。
在本申请的一个方面，本申请提供了一种显示基板。根据本申请的实施例，该显示基板包括：衬底基板，所述衬底基板具有拉伸区域和多个显示区域，多个所述显示区域之间被所述拉伸区域间隔开，所述拉伸区域内具有连接相邻的两个所述显示区域的第一连接单元和多条所述第一连接单元共同限定出的镂空部；和发光元件，所述发光元件设置在所述衬底基板的一侧，且所述拉伸区域与所述显示区域内均具有所述发光元件。该显示基板可实现拉伸变形，且具有该显示基板的显示装置在显示时的像素密度高，发光的均一性高，显示效果好。
根据本申请的实施例，位于所述拉伸区域内的所述发光元件设置在所述第一连接单元上。
根据本申请的实施例，位于所述拉伸区域内的所述发光元件设置在所述镂空部内的孤岛结构上。
根据本申请的实施例，在所述衬底基板的一侧设置有金属走线层，所述金属走线层自所述显示区域延伸至所述拉伸区域内，并与位于所述拉伸区域内的所述发光元件电连接，当所述发光元件设置在所述第一连接单元上时，所述金属走线层延伸至所述第一连接单元上；当所述发光元件设置在所述孤岛结构上时，所述金属走线层延伸至所述镂空部。
根据本申请的实施例，该显示基板满足以下任意一种：(1)所述金属走线层设置在所述衬底基板的表面上，在所述金属走线层远离所述衬底基板的表面上还设置有第一有机层，所述第一有机层在所述衬底基板上的第一正投影与所述金属走线层在所述衬底基板上的第二正投影具有重叠区域；(2)在所述金属走线层远离所述衬底基板的表面上设置有第一有 机层，在所述金属走线层靠近所述衬底基板的表面上设置有第二有机层，所述第一有机层在所述衬底基板上的第一正投影、所述金属走线层在所述衬底基板上的第二正投影和所述第二有机层在所述衬底基板上的第三正投影具有重叠区域。
根据本申请的实施例，该显示基板进一步包括：第二连接单元，所述第二连接单元连接所述孤岛结构和所述显示区域。
根据本申请的实施例，该显示基板进一步包括：第二连接单元，所述第二连接单元连接所述孤岛结构和所述第一连接单元，且所述金属走线层沿所述第二连接单元延伸至所述孤岛结构并与位于所述孤岛结构上的所述发光元件电连接。
根据本申请的实施例，所述显示区域的形状为四边形，每个所述显示区域的四个顶角处分别连接有一个所述第一连接单元，每四条所述第一连接单元共同限定出一个所述镂空部。
根据本申请的实施例，所述第一连接单元和所述第二连接单元上各自独立地具有弯折部。
根据本申请的实施例，所述第一连接单元和所述第二连接单元各自独立地满足以下条件的至少之一：长度为600μm～800μm；所述弯折部的数量为1个～2个。
根据本申请的实施例，所述发光元件为有机电致发光元件或发光二极管中的至少一种，且位于所述拉伸区域内的所述发光元件为发光二极管。
在本申请的又一个方面，本申请提供了一种显示装置。根据本申请的实施例，该显示装置包括前面所述的显示基板。该显示装置在显示时的像素密度高，发光的均一性高，显示效果好。
附图说明
图1显示了本申请一个实施例的显示基板的平面结构示意图。
图2显示了本申请另一个实施例的显示基板的平面结构示意图。
图3显示了本申请又一个实施例的显示基板的平面结构示意图。
图4显示了本申请再一个实施例的显示基板的平面结构示意图。
图5显示了本申请再一个实施例的显示基板的平面结构示意图。
图6显示了本申请再一个实施例的显示基板的平面结构示意图。
图7显示了本申请再一个实施例的显示基板的平面结构示意图。
图8显示了本申请再一个实施例的显示基板的平面结构示意图。
图9显示了本申请再一个实施例的显示基板的平面结构示意图。
图10显示了本申请再一个实施例的显示基板的平面结构示意图。
图11显示了本申请图3中的显示基板的沿AA线的一个剖面结构示意图。
图12显示了本申请图3中的显示基板的沿AA线的另一个剖面结构示意图。
图13显示了本申请图3中的显示基板的沿AA线的又一个剖面结构示意图。
附图标记：
1：显示基板 10：拉伸区域 11：第一连接单元 111：弯折部 12：镂空部 122：孤岛结构 20：显示区域 21a、21b：第二连接单元 211：弯折部 201a、201b、201c：发光元件 301：衬底基板 302：第一缓冲层 303：第二缓冲层 304：有源层 305：第一栅极 306：第二栅极 307：源极 308：第一栅绝缘层 309：第二栅绝缘层 310：层间绝缘层 311：金属走线层 312：第一有机层 313：VSS信号线 314：发光元件 315：第二有机层 316：漏极 317：封装结构
具体实施方式
下面详细描述本申请的实施例。下面描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。实施例中未注明具体技术或条件的，按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。
在本申请的一个方面，本申请提供了一种显示基板。根据本申请的实施例，参照图1，该显示基板1包括：衬底基板，所述衬底基板具有拉伸区域10和多个显示区域20，多个所述显示区域20之间被所述拉伸区域10间隔开，所述拉伸区域10内具有连接相邻的两个所述显示区域20的第一连接单元11和多条所述第一连接单元11共同限定出的镂空部12(结构示意图参照图2)；和发光元件(图中未示出)，所述发光元件设置在所述衬底基板的一侧，且所述拉伸区域10与所述显示区域20内均具有所述发光元件。由于在该显示基板1中，具有拉伸区域10，因此其可以实现拉伸变形；并且，由于在该显示基板1中，不仅仅是在显示区域20内具有发光元件，其在拉伸区域10内也具有所述发光元件，因此，具有该显示基板1的显示装置在显示时的像素密度高，发光的均一性高，显示效果好；另外，通过上述第一连接单元11和多条所述第一连接单元11共同限定出的镂空部12，可以实现在该显示基板1进行拉伸时释放拉伸时的应变，从而实现该显示基板1较好地实现可拉伸变形。
根据本申请的实施例，具体而言，所述衬底基板的材料不受特别限制，例如，在本申请的一些实施例中，所述衬底基板的材料可以包括聚酰亚胺等柔性材料，或者也可以选用聚对苯二甲酸乙二醇酯、金属等。由此，可以使得该显示基板1更好地实现拉伸变形。
根据本申请的实施例，进一步地，所述拉伸区域中第一连接单元11和镂空部12的具体形状，数量等均不受特别限制，例如，在本申请的一些实施例中，参照图2、图3、图4、图5、图6、图7、图8、图9或图10，所述显示区域20的形状可以为四边形，每个所述显示区域20的四个顶角处分别连接有一个所述第一连接单元11，每四条所述第一连接单元11共同限定出一个所述镂空部12。由此，该显示基板1的拉伸性能较佳，同时，可以在该显示基板1的显示区域20和拉伸区域10内，设置有更多的所述发光元件，进而使得具有该显示基板1的显示装置在实现显示时的像素密度进一步提高，显示效果进一步变好。
根据本申请的实施例，更进一步地，所述发光元件在所述显示区域内的具体设置方式可以是常规的显示基板中发光元件在显示区域内的设置方式，例如，图3、图4、图5、图 6、图7、图8、图9或图10中的发光元件201a，其设置在所述显示区域20中，可以实现较佳的发光效果，进而使得显示基板1的显示效果较佳。
根据本申请的实施例，更进一步地，下面结合附图来具体说明所述发光元件在所述拉伸区域内的具体设置方式：
首先，在本申请的一些实施例中，参照图3，位于所述拉伸区域内的所述发光元件201b可以是设置在所述第一连接单元11上的；另外，在本申请的另一些实施例中，参照图4，位于所述拉伸区域内的所述发光元件201c也可以是设置在所述镂空部12内的孤岛结构122上的；在本申请的又一些实施例中，参照图5，当具有所述发光元件201b设置在所述第一连接单元11上时。也可以同时具有所述发光元件201c设置在所述镂空部12内的孤岛结构122上。由此，所述显示基板1的结构简单、容易实现，且可以较好地实现拉伸变形，同时，具有该显示基板的显示装置在显示时的像素密度高，发光的均一性高，显示效果好。
根据本申请的实施例，更具体地，位于所述拉伸区域内的所述发光元件的具体设置方式不受特别限制，其可以是通过金属走线层与显示区域内的发光元件电连接以实现发光的。在本申请的一些实施例中，参照图3、图4、图5、图6、图7、图8、图9或图10，在所述衬底基板的一侧设置有金属走线层(图中未示出)，所述金属走线层自所述显示区域20延伸至所述拉伸区域内，并与位于所述拉伸区域内的所述发光元件电连接，当所述发光元件设置在所述第一连接单元11上时(如图3中的发光元件201b)，所述金属走线层延伸至所述第一连接单元11上；当所述发光元件设置在所述孤岛结构122上时(如图4中的发光元件201c)，所述金属走线层延伸至所述镂空部12。通过此种设置方式，可以使得位于所述拉伸区域内的发光元件较好地发光，进而使得显示效果较佳，该显示基板在实现显示时的像素密度显著提高。
根据本申请的实施例，所述金属走线层的具体设置方式可以是所述金属走线层311设置在所述衬底基板301的表面上，在所述金属走线层311远离所述衬底基板301的表面上还设置有第一有机层312，所述第一有机层312在所述衬底基板301上的第一正投影与所述金属走线层311在所述衬底基板301上的第二正投影具有重叠区域(结构示意图参照图12，需要说明的是，本文中的图11、图12和图13均为沿图3中所示出的显示基板中AA线的剖面结构示意图，在后文中不再重复赘述)；另外，在本申请的另一些实施例中，参照图11和图13，在所述金属走线层311远离所述衬底基板301的表面上设置有第一有机层312，在所述金属走线层311靠近所述衬底基板301的表面上设置有第二有机层315，所述第一有机层312在所述衬底基板301上的第一正投影、所述金属走线层311在所述衬底基板301上的第二正投影和所述第二有机层315在所述衬底基板301上的第三正投影具有重叠区域，从而使得所述金属走线层311不与该显示基板中的无机层相连接，进而使得该显示基板在进行拉伸时，所述金属走线层311处不会产生较大的应变，不易发生断裂，从而使得该显示基板在拉伸以后，拉伸区域内的发光元件仍然能够具有较佳的显示效果。
根据本申请的实施例，可以理解的是，位于所述拉伸区域内的所述发光元件的补偿电路以及控制其发光的薄膜晶体管既可以设置在显示区域20内(结构示意图参照图12)，也 可以设置在所述第一连接单元11内(结构示意图参照图11)，还可以是设置在所述孤岛结构上的，其可以根据实际需要进行设置，在此不再过多赘述。如前所述，当所述控制位于所述拉伸区域内的所述发光元件的补偿电路以及薄膜晶体管设置在所述显示区域内时，通过将所述金属走线层自所述显示区域20延伸至所述拉伸区域内，并与位于所述拉伸区域内的所述发光元件电连接，当所述发光元件设置在所述第一连接单元11上时，所述金属走线层延伸至所述第一连接单元11上(结构示意图参照图12)；当所述发光元件设置在所述孤岛结构上时，所述金属走线层延伸至所述镂空部，从而能够较好地驱动位于所述拉伸区域内的发光元件发光。
根据本申请的实施例，可以理解的是，金属走线层自所述显示区域20延伸至所述拉伸区域内，并与位于所述拉伸区域内的所述发光元件电连接的具体方式不受特别限制，既可以是直接连接(结构示意图参照图11和图13)，也可以是通过通孔连接的(结构示意图参照图12)，在此不再过多赘述。
根据本申请的实施例，进一步地，参照图4和图5，该显示基板还可以进一步包括：第二连接单元21a，所述第二连接单元21a连接所述孤岛结构122和所述显示区域20；在本申请的另一些实施例中，进一步地，参照图6，该显示基板还可以进一步包括：第二连接单元21b，所述第二连接单元21b连接所述孤岛结构122和所述第一连接单元11，且所述金属走线层沿所述第二连接单元21b延伸至所述孤岛结构122并与位于所述孤岛结构122上的所述发光元件电连接。由此，所述显示基板的结构简单、容易实现，且通过第二连接单元21a或所述第二连接单元21b的设置，可以较好地实现拉伸变形，同时，位于镂空部12内的发光元件可以较好地发光，进而使得具有该显示基板的显示装置在显示时的像素密度高，发光的均一性高，显示效果好。
根据本申请的实施例，更进一步地，所述第二连接单元的设置数量、具体连接方式等均是不受特别限制的，例如，在本申请的一些实施例中，参照图7，可以是与一个所述孤岛结构122连接的所述第二连接单元的数量为两个，其中，一个所述第二连接单元21b与所述第一连接单元11相连接，另一个所述第二连接单元与所述显示区域20相连接；在本申请的另一些实施例中，参照图8，也可以是与一个所述孤岛结构122连接的所述第二连接单元的数量为四个，四个所述第二连接单元21b均与所述第一连接单元相连接；在本申请的又一些实施例中，参照图9，还可以是与一个所述孤岛结构122连接的所述第二连接单元的数量为四个，四个所述第二连接单元均与所述显示区域20相连接；另外，在本申请的再一些实施例中，参照图10，还可以是与一个所述孤岛结构连接的所述第二连接单元的数量为四个，其中，两个所述第二连接单元21b与所述第一连接单元11相连接，另两个所述第二连接单元与所述显示区域20相连接。由此，通过上述不同的所述第二连接单元的具体设置方式，可以使得所述显示基板的结构简单、容易实现，可以更好地实现拉伸变形，同时，位于镂空部12内的发光元件可以较好地发光，进而使得具有该显示基板的显示装置在显示时的像素密度更高，发光的均一性更高，显示效果更好。
根据本申请的实施例，另外，前面所述第一连接单元和所述第二连接单元上还可以各 自独立地具有弯折部，例如，在本申请的一些实施例中，参照图4，在所述第一连接单元11上还具有弯折部111；另外，在所述第二连接单元21a上还具有弯折部211。由此，弯折部处的拉伸性能更佳，进而可以使得该显示基板的拉伸性能更好。
根据本申请的实施例，进一步地，参照图4，所述第一连接单元的长度L 1和所述第二连接单元的长度L 2可以各自独立地为600μm～800μm；具体地，在本申请的一些实施例中，所述第一连接单元的长度L 1和所述第二连接单元的长度L 2可以各自独立地具体为600μm、650μm、700μm、750μm或者800μm等。由此，所述第一连接单元的长度L 1和所述第二连接单元的长度L 2较为合适，弯折部处的拉伸性能更佳，进而可以使得该显示基板的拉伸性能进一步提高。
根据本申请的实施例，进一步地，所述第一连接单元和所述第二连接单元上的所述弯折部的数量不受特别限制，具体地，在本申请的一些实施例中，所述第一连接单元和所述第二连接单元上的所述弯折部的数量可以各自独立地为1个～2个。由此，所述第一连接单元和所述第二连接单元上的所述弯折部的数量较为合适，进而可以使得该显示基板的拉伸性能进一步提高。
根据本申请的实施例，具体而言，所述发光元件的具体种类不受特别限制，例如，本申请所述的显示基板上的发光元件可以是有机电致发光元件或发光二极管。更进一步地，当位于所述拉伸区域内的所述发光元件为发光二极管时，由于其不需要设置封装结构，进而在拉伸时，所产生的应变更低，进而可实现的拉伸量更大，同时也不会损伤发光元件，使得拉伸区域内的显示效果进一步提高。例如，在本发明的一些实施例中，参照图13，位于显示区域20内的发光元件314为有机电致发光元件，位于拉伸区域中的第一连接单元11内的发光元件314为发光二极管，其中，所述有机电致发光元件和所述发光二极管的具体结构，均可以是相关技术中常规的有机电致发光元件或发光二极管的具体结构，在此不再过多赘述。
具体而言，在本申请的一些实施例中，参照图11、图12和图13，该显示基板还可以包括常规显示基板中的结构，例如，第一缓冲层302、第二缓冲层303、有源层304、第一栅极305、第二栅极306、源极307、第一栅绝缘层308、第二栅绝缘层309、层间绝缘层310、VSS信号线313、漏极316，当所述发光元件314为有机电致发光元件时，可以理解的是，该显示基板还可以包括封装结构317(结构示意图参照图13)，其中，上述各个结构的具体设置方式，均可以与相关技术中该结构的具体设置方式相同，在此不再过多赘述。
根据本申请的实施例，可以理解的是，当所述发光元件314为有机电致发光元件时，其还可以包括常规的有机电致发光元件的具体结构，例如，阴极、阳极、发光层、像素界定层等，其具体结构均与常规的有机电致发光元件的具体结构相同，在此不再过多赘述。
根据本申请的实施例，可以理解的是，当所述发光元件314为发光二极管时，其也还可以包括常规的发光二极管的具体结构，在此不再过多赘述。
根据本申请的实施例，可以理解的是，前面所述的各个膜层，其中，无机层的材料可以选用氧化硅、氮化硅或者氮氧化硅等单层或者多层无机层；有源层的具体材料可以是无 机半导体材料，例如非晶硅和多晶硅等；或者也可以是有机半导体材料；还可以是氧化物半导体材料例如，Zn、In或者Ga等；金属走线层，以及源极、漏极等金属引线的材料可以是Ti、Al、Mo或者Ag等导电金属，或者也可以是ITO、IZO、ZnO、In 2O 3、IGO或者AZO等导电氧化物，当然，还可以是混有导电颗粒的橡胶等具有高延展性的导电材料，例如可以是碳纳米管，纳米银线等；第一有机层、第二有机层的材料可以是聚甲基丙烯酸甲酯和聚苯乙烯的聚合物、苯酚基团的聚合物衍生物，亚克力的聚合物、对二甲苯的聚合物、芳醚的聚合物、酰胺的聚合物、氟化物的聚合物、对二甲苯的聚合物、乙烯醇的聚合物和以上各种聚合物的混合物等。由此，材料来源广泛、易得，成本较低。
根据本申请的实施例，可以理解的是，当所述发光元件314为有机电致发光元件时，其中的阳极、阴极的材料可以是Ti、Al、Mo或者Ag等导电金属，或者也可以是ITO、IZO、ZnO、In 2O 3、IGO或者AZO等导电氧化物；像素界定层的材料可以是聚甲基丙烯酸甲酯和聚苯乙烯的聚合物、苯酚基团的聚合物衍生物，亚克力的聚合物、对二甲苯的聚合物、芳醚的聚合物、酰胺的聚合物、氟化物的聚合物、对二甲苯的聚合物、乙烯醇的聚合物和以上各种聚合物的混合物等；发光层的材料可以是磷光、荧光发光材料；封装结构既可以是采用无机-有机-无机的叠层封装结构，也可以是无机封装结构，其中，无机材料可以选用氧化硅、氮化硅或者氮氧化硅等单层或者多层无机层，或者也可以是铝氧化物、铝氮化物、钛氮化物等致密膜层；有机材料可以选用聚甲基丙烯酸酯、聚碳酸酯、亚克力、环氧树脂等，其具体可以通过喷墨打印工艺、构图工艺等方式图案化形成，其中，构图工艺可以是涂布工艺和光刻工艺，其具体均可以与相关技术中的该工艺相同，在此不再过多赘述。
根据本申请的实施例，可以理解的是，在所述显示基板的制作过程中，其衬底基板上可以通过OCA胶材贴附有保护膜层，保护膜层的材料可以选用二甲基硅氧烷、聚酰亚胺、聚对苯二甲酸乙二醇酯等，在此不再过多赘述。由此，材料来源广泛、易得，成本较低。
在本申请的又一个方面，本申请提供了一种显示装置。根据本申请的实施例，该显示装置包括前面所述的显示基板。该显示装置在显示时的像素密度高，发光的均一性高，显示效果好。
根据本申请的实施例，该显示装置除前面所述的显示基板以外，还可以包括其他必要的结构和组成，本领域技术人员可根据显示装置的具体种类和使用要求进行补充和设计，在此不再过多赘述。
根据本申请的实施例，该显示装置的具体种类不受特别限制，例如包括但不限于手机、平板电脑、可穿戴设备、游戏机、电视机或者车载显示器等。
在本申请的描述中，需要理解的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、 或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (12)

  1. 一种显示基板，其特征在于，包括：
    衬底基板，所述衬底基板具有拉伸区域和多个显示区域，多个所述显示区域之间被所述拉伸区域间隔开，所述拉伸区域内具有连接相邻的两个所述显示区域的第一连接单元和多条所述第一连接单元共同限定出的镂空部；和
    发光元件，所述发光元件设置在所述衬底基板的一侧，且所述拉伸区域与所述显示区域内均具有所述发光元件。
  2. 根据权利要求1所述的显示基板，其特征在于，位于所述拉伸区域内的所述发光元件设置在所述第一连接单元上。
  3. 根据权利要求1或2所述的显示基板，其特征在于，位于所述拉伸区域内的所述发光元件设置在所述镂空部内的孤岛结构上。
  4. 根据权利要求3所述的显示基板，其特征在于，在所述衬底基板的一侧设置有金属走线层，所述金属走线层自所述显示区域延伸至所述拉伸区域内，并与位于所述拉伸区域内的所述发光元件电连接，
    当所述发光元件设置在所述第一连接单元上时，所述金属走线层延伸至所述第一连接单元上；
    当所述发光元件设置在所述孤岛结构上时，所述金属走线层延伸至所述镂空部。
  5. 根据权利要求4所述的显示基板，其特征在于，满足以下任意一种：
    (1)所述金属走线层设置在所述衬底基板的表面上，在所述金属走线层远离所述衬底基板的表面上还设置有第一有机层，所述第一有机层在所述衬底基板上的第一正投影与所述金属走线层在所述衬底基板上的第二正投影具有重叠区域；
    (2)在所述金属走线层远离所述衬底基板的表面上设置有第一有机层，在所述金属走线层靠近所述衬底基板的表面上设置有第二有机层，所述第一有机层在所述衬底基板上的第一正投影、所述金属走线层在所述衬底基板上的第二正投影和所述第二有机层在所述衬底基板上的第三正投影具有重叠区域。
  6. 根据权利要求3～5中任一项所述的显示基板，其特征在于，进一步包括：第二连接单元，所述第二连接单元连接所述孤岛结构和所述显示区域。
  7. 根据权利要求3～5中任一项所述的显示基板，其特征在于，进一步包括：第二连接单元，所述第二连接单元连接所述孤岛结构和所述第一连接单元，且所述金属走线层沿所述第二连接单元延伸至所述孤岛结构并与位于所述孤岛结构上的所述发光元件电连接。
  8. 根据权利要求1～7中任一项所述的显示基板，所述显示区域的形状为四边形，每个所述显示区域的四个顶角处分别连接有一个所述第一连接单元，每四条所述第一连接单元共同限定出一个所述镂空部。
  9. 根据权利要求6或7所述的显示基板，其特征在于，所述第一连接单元和所述第二连接单元上各自独立地具有弯折部。
  10. 根据权利要求9所述的显示基板，其特征在于，所述第一连接单元和所述第二连 接单元各自独立地满足以下条件的至少之一：
    长度为600μm～800μm；
    所述弯折部的数量为1个～2个。
  11. 根据权利要求1～10中任一项所述的显示基板，其特征在于，所述发光元件为有机电致发光元件或发光二极管中的至少一种，且位于所述拉伸区域内的所述发光元件为发光二极管。
  12. 一种显示装置，其特征在于，包括权利要求1～11中任一项所述的显示基板。
PCT/CN2020/138247 2020-12-22 2020-12-22 显示基板和显示装置 WO2022133711A1 (zh)

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