WO2019114384A1 - 一种柔性显示基板、显示面板及显示装置 - Google Patents

一种柔性显示基板、显示面板及显示装置 Download PDF

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Publication number
WO2019114384A1
WO2019114384A1 PCT/CN2018/109354 CN2018109354W WO2019114384A1 WO 2019114384 A1 WO2019114384 A1 WO 2019114384A1 CN 2018109354 W CN2018109354 W CN 2018109354W WO 2019114384 A1 WO2019114384 A1 WO 2019114384A1
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WIPO (PCT)
Prior art keywords
block
display area
stopper
flexible
flexible display
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PCT/CN2018/109354
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English (en)
French (fr)
Inventor
王格
蒋志亮
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Priority to US16/337,595 priority Critical patent/US11316128B2/en
Publication of WO2019114384A1 publication Critical patent/WO2019114384A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/842—Containers
    • H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
    • 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
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/562—Protection against mechanical damage
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a flexible display substrate, a display panel, and a display device.
  • OLED Organic Light-Emitting Diode
  • Existing flexible display substrates generally include a flexible substrate having a display region, an organic electroluminescent structure located in a display region of the flexible substrate, and an encapsulation layer covering the organic electroluminescent structure; the encapsulation layer is generally composed of an organic layer and an inorganic layer Stacked; wherein the inorganic layer acts to block water oxygen, and the organic layer achieves flattening.
  • the edge of the flexible display substrate is prone to cracks due to stress concentration near the cut surface, and when the crack propagates to the display area, water and oxygen pass through. The crack enters the display area, which in turn affects the service life of the flexible display substrate.
  • a flexible display substrate comprising a flexible substrate and an insulating layer disposed on the flexible substrate; the flexible substrate comprising a display area and a non-display area surrounding the display area;
  • a crack blocking structure for preventing cracks of the non-display area from spreading toward the display area is disposed on the insulating layer corresponding to the non-display area.
  • the crack blocking structure comprises at least one block group, wherein each of the block groups includes a plurality of stops distributed along a circumferential interval of the display area.
  • the crack blocking structure is disposed on one side, two sides or three sides of the display area, or is disposed around the entire display area.
  • the crack blocking structure includes at least two of the block groups
  • the at least two block groups are arranged in parallel from the display area toward the non-display area.
  • each of the two adjacent block groups respectively includes a first block group and a second block group
  • the first block group includes a plurality of first blocks; each of the two adjacent first blocks has a first gap therebetween;
  • the second block group includes a plurality of second blocks; a second gap is formed between each of the two adjacent second blocks;
  • the first gap and the second gap are staggered.
  • the first block and the second block are both a rectangular parallelepiped or a wavy body, and a length extending direction of the rectangular parallelepiped or the undulating body is consistent with an arrangement direction of the first blocking block.
  • the first block group further includes a third block disposed on the first gap, and a length extending direction of the third block is perpendicular to a length extending direction of the first block.
  • the second block group further includes a fourth block disposed on the second gap, and a length extending direction of the fourth block is perpendicular to a length extending direction of the second block.
  • an extending direction of a length of each of the blocks has an angle with an arrangement direction of the plurality of the blocks.
  • each of the two adjacent block groups respectively includes a third block group and a fourth block group
  • the third block group includes a plurality of fifth blocks, and an extension direction of each of the fifth blocks has an angle with an arrangement direction of the plurality of fifth blocks;
  • the fourth block group includes a plurality of sixth blocks, and a length extending direction of each of the sixth blocks coincides with an arrangement direction of the plurality of sixth blocks.
  • the crack blocking structure comprises at least two of the block groups, and the at least two block groups are prepared in the same layer as the gate metal layer and/or the source and drain metal layers.
  • the insulating layer comprises a buffer layer, a gate insulating layer or a source/drain insulating layer.
  • the present disclosure also provides a display panel, which includes any of the flexible display substrates provided by the above technical solutions.
  • the present disclosure also provides a display device including the display panel provided by the above technical solution.
  • FIG. 1 is a partial structural schematic view of a flexible display substrate according to an embodiment of the present disclosure
  • FIG. 2 is a cross-sectional structural view of the flexible display substrate provided in FIG. 1 in the A-A direction;
  • FIG. 3 is a schematic structural view of a crack blocking structure of a flexible display substrate according to an embodiment of the present disclosure
  • FIG. 4 is another schematic structural diagram of a crack blocking structure of a flexible display substrate according to an embodiment of the present disclosure
  • FIG. 5 is another schematic structural diagram of a crack blocking structure of a flexible display substrate according to an embodiment of the present disclosure
  • FIG. 6 is another schematic structural diagram of a crack blocking structure of a flexible display substrate according to an embodiment of the present disclosure.
  • FIG. 7 is another schematic structural diagram of a crack blocking structure of a flexible display substrate according to an embodiment of the present disclosure.
  • FIG. 8 is another schematic structural diagram of a crack blocking structure of a flexible display substrate according to an embodiment of the present disclosure.
  • FIG. 9 is another schematic structural diagram of a crack blocking structure of a flexible display substrate according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a flexible display substrate, a display panel, and a display device, wherein the display panel and the display device each include the flexible display substrate, and the flexible display substrate can solve the influence of water and oxygen entering the organic electroluminescent structure. The problem of life.
  • a flexible display substrate 1 includes a flexible substrate 11 , and insulating layers and packages sequentially disposed on the flexible substrate 11 .
  • the flexible substrate 11 has a display area and a non-display area surrounding the display area.
  • the flexible display substrate 1 includes a flexible substrate 11, a light-emitting layer disposed on one side of the flexible substrate 11, and a periphery of the light-emitting layer.
  • Each of the insulating layers, and the encapsulating layer 13 for encapsulating the light emitting layer and the respective insulating layers may further be provided with a substrate between the flexible substrate 11 and the light emitting layer, and the encapsulating layer 13 may include an inorganic layer and an organic layer (not shown)
  • the insulating layer may include a buffer layer 121, a gate insulating layer, and a source/drain insulating layer 124; the light emitting layer may be an organic electroluminescent structure; and the gate insulating layer may include a first gate insulating layer disposed in a stack
  • the first encapsulation layer 131 and the second encapsulation layer 132 may be an inorganic encapsulation layer;
  • a crack blocking structure is disposed on the buffer layer 121, the first gate insulating layer 122, the second gate insulating layer 123 or the source/drain insulating layer 124 corresponding to the non-display area, and the crack blocking structure is used to block the non-display area The crack spreads toward the display area.
  • a crack blocking structure is provided on the insulating layer in the peripheral region of the light-emitting layer, the crack-blocking structure being formed by at least one stopper group 14, each of which includes a circumferential direction along the display region.
  • a plurality of spaced apart spacers for example, as shown in the structure of FIG.
  • the first set of blocks 141 includes a plurality of first stops 1411 distributed circumferentially along the display zone, and the second set of blocks 142 includes an edge display a plurality of second stoppers 1421 circumferentially spaced apart; as shown in the structure of FIG. 1, the crack blocking structure is formed by five stopper groups 14 arranged in parallel from the display region to the non-display region, and the crack blocking structure may also be In the structure shown in FIG. 3, six block groups 14 are arranged in parallel from the display area to the non-display area, and the crack blocking structure may also be arranged in parallel from the display area to the non-display area as shown in the structure of FIG. The block group 14 is formed.
  • the crack blocking structure may be formed by one block group 14, two block groups 14, three block groups 14, seven block groups 14 or a plurality of block groups 14;
  • Each of the block sets 14 may include a plurality of stops distributed along the circumferential interval of the display area
  • the plurality of stopper groups 14 may form a retaining wall that is layered.
  • the flexible display substrate 1 when a crack occurs in the non-display area of the flexible display substrate 1, since the flexible display substrate 1 is provided with a crack blocking structure on the insulating layer corresponding to the non-display area, the flexible substrate 11 is provided. Or when the crack generated by the insulating layer at the edge of the non-display area spreads to the crack blocking structure, the crack cannot continue to expand through the crack blocking structure, and therefore, the flexible display substrate 1 can prevent the crack of the non-display area from expanding toward the display area by the crack blocking structure.
  • the crack is blocked in the non-display area
  • the external water oxygen can be prevented from entering the display area through the crack
  • the strength of the non-display area portion of the flexible display substrate 1 can be enhanced by the crack blocking structure, and therefore, the flexible display substrate 1 can
  • the crack generated in the non-display area is locked in the non-display area by the crack blocking structure, and the crack is prevented from expanding to the display area.
  • the above flexible display substrate 1 can solve the problem that the service life is affected by the entry of water and oxygen into the organic electroluminescent structure by the crack blocking structure.
  • the crack blocking structure may include at least one block set 14, wherein each block set 14 includes a plurality of circumferentially spaced portions along the display area. Stoppers.
  • the crack blocking structure includes five stopper groups 14 arranged in parallel in a direction from the display region toward the non-display region, and each of the stopper groups 14 is provided with a gap between adjacent stoppers.
  • the plurality of stoppers are formed into a split structure, and the stress in each direction around the display region of the flexible display substrate 1 can be dispersed to prevent cracks from occurring due to stress concentration, which facilitates bending of the flexible display substrate 1 in various directions.
  • the crack blocking structure of the flexible display substrate 1 includes six stopper groups 14 arranged in parallel, and the crack blocking structures in FIGS. 4, 5, 6, 7, 8, and 9 are both Four block groups 14 are included; the crack blocking structure is not limited to the number of the block groups 14 in FIGS.
  • a plurality of stopper groups 14 such as seven stopper groups 14 are formed; when the crack blocking structure includes a plurality of stopper groups 14, the plurality of stopper groups 14 may form a layered retaining wall; the plurality of stopper groups 14
  • the arrangement enhances the bending resistance of the flexible display substrate 1 in the non-display area while preventing cracks in the periphery of the flexible display substrate 1 or cracks in the non-display area from spreading to the display area.
  • the crack blocking structure may be disposed only along one side edge of the display area, or may surround two or three side edges of the display area, and may be disposed around the entire display area, and the specific design may be determined according to actual needs. .
  • two adjacent blocks Group 14 in each of the at least two block groups 14, includes a first block group 141 and a second block group 142, respectively;
  • the first stopper group 141 includes a plurality of first stoppers 1411; each of the two adjacent first stoppers 1411 has a first gap S1;
  • the second block set 142 includes a plurality of second stops 1421; a second gap S2 between each adjacent two second blocks 1421;
  • the first gap S1 and the second gap S2 are alternately arranged.
  • the first gap S1 and the second block group between the adjacent first stops 1411 of the first block group 141 are staggered, and when cracks are generated at the edges of the flexible display substrate 1 and the cracks are expanded toward the display region, the cracks extend to the first block 1411.
  • a gap S1 continues to extend toward the second stopper 1421.
  • the second stopper 1421 opposite to the first gap S1 strengthens the structure of the flexible display substrate 1, the crack is blocked by the second stopper 1421. Further, it is possible to prevent the crack from continuing to expand toward the display region; therefore, the structure of the flexible display substrate 1 can be enhanced by the plurality of stopper groups 14 which are alternately disposed, and the crack blocking effect of the crack stopper structure is improved.
  • the first stopper 1411 and the second stopper 1421 may be rectangular parallelepiped, and the length extension direction of the rectangular parallelepiped is consistent with the arrangement direction of the stoppers in the stopper group 14; It is shown that the first block 1411 and the second block 1421 are both wavy bodies, and the length extension direction of the wavy body coincides with the arrangement direction of the stoppers in the block group 14; in addition, the first block 1411 and the second block
  • the block 1421 may also be an arcuate body, a cylinder, a truncated cone, a triangular prism, a cube, a polygon, or the like, and is not limited to the structure shown in the drawings.
  • the second stopper group 142 further includes a fourth stopper 1422 disposed in the second gap S2, and the length extension direction of the fourth stopper 1422 is perpendicular to the length extension direction of the second stopper 1421.
  • the first block group 141 further includes a third block 1412 disposed in the first gap S1, and a length extending direction of the third block 1412 is perpendicular to a length extending direction of the first block 1411;
  • the second stopper group 142 further includes a fourth stopper 1422 disposed in the second gap S2, and a length extension direction of the fourth stopper 1422 is perpendicular to a length extension direction of the second stopper 1421.
  • the length extension direction of the third stopper 1412 in the first stopper group 141 is perpendicular to the length extension direction of the first stopper 1411, and the length extension direction and the second gear of the fourth stopper 1422 in the second stopper group 142
  • the length of the block 1421 extends perpendicularly.
  • the first block 1411 and the third block 1412, and the second block 1421 and the fourth block 1422 can structurally enhance different directions of the edge portion of the flexible display substrate 1.
  • the crack formed in the edge portion cannot pass through the crack blocking structure, thereby protecting the display region of the flexible display substrate, which is advantageous for dispersion of stress when the flexible display substrate 1 is bent in various directions.
  • the length extending direction of each block and the arrangement direction of the plurality of blocks may also have an angle, that is, a block.
  • the blocks can be arranged obliquely with respect to their arrangement direction.
  • each of the stopper groups 14 the length extending direction of each of the stoppers 140 has an angle a with the direction in which the plurality of stoppers 140 are arranged.
  • each of the two adjacent block groups 14 includes a third block group 143 and a fourth block group 144;
  • the third stopper group 143 includes a plurality of fifth stoppers 1431, and the length extension direction of each of the fifth stoppers 1431 and the arrangement direction of the plurality of fifth stoppers 1431 have an angle b;
  • the fourth stopper group 144 includes a plurality of sixth stoppers 1441, and the length extension direction of each of the sixth stoppers 1441 coincides with the arrangement direction of the plurality of sixth stoppers 1441.
  • a plurality of the block groups 14 includes a fifth block group 145 and a sixth block group 146, and the block 1451 of the fifth block group 145 has a length extending direction and a plurality of blocks.
  • the first angle c and the second angle d may be 0 to 180 degrees.
  • each of the stopper groups 14 may be the same or different, and is not limited to the structures shown in FIGS. 2 to 9, and other arrangement structures may be employed.
  • each of the stoppers 14 may be a stopper 140 made of a metal material.
  • the stopper may be prepared in the same layer as the gate metal layer and/or the source/drain metal layer.
  • the insulating layer may include a buffer layer 121, a gate insulating layer or a source/drain insulating layer 124.
  • the crack blocking structure may be disposed on the buffer layer 121, or may be disposed on the gate insulating layer, or may be disposed.
  • the crack blocking structure may include both the stopper group 14 prepared in the same layer as the gate metal layer, and the stopper prepared in the same layer as the source and drain metal layers.
  • a plurality of the stopper groups 14 in the crack blocking structure may be respectively disposed on one, two or more of the buffer layer 121, the gate insulating layer and the source/drain insulating layer 124.
  • the flexible display substrate 1 further includes at least one annular retaining wall disposed on a side of the crack blocking structure facing away from the display area. And/or disposed at least one barrier dam 16 on a side of the crack blocking structure facing the display area.
  • the flexible display substrate 1 is provided with two annular retaining walls 15, and a plurality of annular retaining walls 15 may be provided, and the plurality of annular retaining walls 15 are spaced apart from each other.
  • the annular retaining wall 15 can be fabricated in the same layer as the gate insulating layer and/or the source and drain insulating layer 124.
  • the barrier dam 16 may also be disposed in an annular shape surrounding the display area, and the barrier dam 16 serves to prevent the organic material from overflowing when an organic layer (not shown) in the encapsulation layer 13 is formed by ink jet printing.
  • an embodiment of the present disclosure further provides a display panel including any of the flexible display substrates 1 provided by the various embodiments described above.
  • the embodiment of the present disclosure further provides a display device, which includes the display panel provided by the above embodiment.
  • the display device can be an electronic device having a display function such as a mobile phone, an electronic paper book, a tablet computer, a television, a display, or the like.

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Abstract

涉及显示技术领域，特别涉及一种柔性显示基板(1)、显示面板及显示装置。该柔性显示基板(1)包括柔性基底(11)、以及设置于所述柔性基底(11)上的绝缘层；所述柔性基底(11)包括显示区和包围所述显示区的非显示区；在与所述非显示区对应的所述绝缘层上设置有裂纹阻挡结构，所述裂纹阻挡结构用于阻止所述非显示区的裂纹朝向所述显示区扩展。该柔性显示基板(1)能够解决因水氧进入有机电致发光结构而影响使用寿命的问题。

Description

一种柔性显示基板、显示面板及显示装置
本申请要求在2017年12月11日提交中国专利局、申请号为201711307262.2、公开名称为“一种柔性显示基板、显示面板及显示装置”的中国专利申请的优先权，该申请的全部内容通过引用结合在本公开中。
技术领域
本公开涉及显示技术领域，特别涉及一种柔性显示基板、显示面板及显示装置。
背景技术
目前，OLED(Organic Light-Emitting Diode，有机电致发光)器件被认为是最有发展潜力的平板显示器件，同时也被认为是最有可能制作成柔性显示器件的显示技术。
现有的柔性显示基板一般包括具有显示区的柔性基底、位于柔性基底的显示区的有机电致发光结构、以及覆盖有机电致发光结构的封装层；封装层一般由有机层和无机层多层堆叠而成；其中无机层实现阻隔水氧的作用，而有机层实现平坦化的作用。
但是现有的柔性显示基板在进行切割工艺、或后续使用中弯折或卷曲时，柔性显示基板的边缘由于应力集中在切割面附近容易产生裂纹，当裂纹扩展至显示区时，水氧会通过裂纹进入到显示区，进而影响柔性显示基板的使用寿命。
发明内容
本公开提供以下技术方案：
一种柔性显示基板，包括柔性基底，以及设置于所述柔性基底的绝缘层；所述柔性基底包括显示区和包围所述显示区的非显示区；
在与所述非显示区对应的所述绝缘层上设置有裂纹阻挡结构，所述裂纹 阻挡结构用于阻止所述非显示区的裂纹朝向所述显示区扩展。
可选地，所述裂纹阻挡结构包括至少一个挡块组，其中，每个所述挡块组包括沿所述显示区的周向间隔分布的多个挡块。
可选地，所述裂纹阻挡结构设置在所述显示区的一侧、两侧或三侧，或者环绕整个所述显示区设置。
可选地，当所述裂纹阻挡结构包括至少两个所述挡块组时，所述至少两个挡块组从所述显示区朝向所述非显示区并行排列。
可选地，在所述至少两个挡块组中，每相邻的两个所述挡块组分别包括第一挡块组和第二挡块组；
所述第一挡块组包括多个第一挡块；每相邻的两个所述第一挡块之间具有第一间隙；
所述第二挡块组包括多个第二挡块；每相邻的两个所述第二挡块之间具有第二间隙；
所述第一间隙与所述第二间隙交错设置。
可选地，所述第一挡块和所述第二挡块均为长方体或波浪形体，且所述长方体或所述波浪形体的长度延伸方向与所述第一挡块的排列方向一致。
可选地，所述第一挡块组还包括设置于所述第一间隙的第三挡块，所述第三挡块的长度延伸方向与所述第一挡块的长度延伸方向垂直设置。
可选地，所述第二挡块组还包括设置于所述第二间隙的第四挡块，所述第四挡块的长度延伸方向与所述第二挡块的长度延伸方向垂直设置。
可选地，每个所述挡块组中，每个所述挡块的长度延伸方向与所述多个所述挡块的排列方向之间具有夹角。
可选地，在所述至少两个挡块组中，每相邻的两个所述挡块组分别包括第三挡块组和第四挡块组；
所述第三挡块组包括多个第五挡块，每个第五挡块的长度延伸方向与所述多个第五挡块的排列方向之间具有夹角；
所述第四挡块组包括多个第六挡块，每个第六挡块的长度延伸方向与所 述多个第六挡块的排列方向重合。
可选地，所述裂纹阻挡结构包括至少两个所述挡块组，所述至少两个挡块组为与栅极金属层和/或源漏极金属层同层制备而成。
可选地，所述绝缘层包括缓冲层、栅极绝缘层或源漏极绝缘层。
可选地，还包括设置于所述裂纹阻挡结构远离所述显示区一侧的至少一个环形挡墙，和/或，设置于所述裂纹阻挡结构靠近所述显示区一侧的至少一个阻挡坝。
另外，本公开还提供了一种显示面板，该显示面板包括上述技术方案提供的任意一种柔性显示基板。
本公开还提供了一种显示装置，该显示装置包括上述技术方案提供的显示面板。
附图说明
图1为本公开一种实施例提供的柔性显示基板的部分结构示意图；
图2为图1中提供的柔性显示基板在A-A向的剖面结构示意图；
图3为本公开实施例提供的柔性显示基板的裂纹阻挡结构的一种结构示意图；
图4为本公开实施例提供的柔性显示基板的裂纹阻挡结构的另一种结构示意图；
图5为本公开实施例提供的柔性显示基板的裂纹阻挡结构的另一种结构示意图；
图6为本公开实施例提供的柔性显示基板的裂纹阻挡结构的另一种结构示意图；
图7为本公开实施例提供的柔性显示基板的裂纹阻挡结构的另一种结构示意图；
图8为本公开实施例提供的柔性显示基板的裂纹阻挡结构的另一种结构示意图；
图9为本公开实施例提供的柔性显示基板的裂纹阻挡结构的另一种结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本公开实施例提供了一种柔性显示基板、显示面板及显示装置，其中，显示面板和显示装置均包括上述柔性显示基板，该柔性显示基板能够解决因水氧进入有机电致发光结构而影响使用寿命的问题。
其中，请参考图1、图2以及图3，本公开一种实施例提供的柔性显示基板1，该柔性显示基板1包括柔性基底11，以及依次设置于柔性基底11上的各绝缘层和封装层13；柔性基底11具有显示区和包围显示区的非显示区；如图2结构所示，柔性显示基板1包括柔性基底11、设置于柔性基底11一侧的发光层、设置于发光层周边的各绝缘层、以及用于封装发光层和各绝缘层的封装层13，在柔性基底11和发光层之间还可以设置有衬底，封装层13可以包括无机层和有机层(图中未示出)，各绝缘层可以包括缓冲层121、栅极绝缘层和源漏极绝缘层124；发光层可以为有机电致发光结构；栅极绝缘层可以包括层叠设置的第一栅极绝缘层122和第二栅极绝缘层123；封装层13可以包括层叠设置的第一封装层131和第二封装层132，第一封装层131和第二封装层132可以为无机封装层；
在与非显示区对应的缓冲层121、第一栅极绝缘层122、第二栅极绝缘层123或源漏极绝缘层124上设置有裂纹阻挡结构，裂纹阻挡结构用于阻止非显示区的裂纹朝向显示区扩展。如图1和图2结构所示，在发光层周边区域的绝缘层上设置有裂纹阻挡结构，该裂纹阻挡结构由至少一个挡块组14形成，每个挡块组14包括沿显示区周向间隔分布的多个挡块，例如，如图1中结构 所示，第一挡块组141包括沿显示区周向间隔分布的多个第一挡块1411，第二挡块组142包括沿显示区周向间隔分布的多个第二挡块1421；如图1结构所示，裂纹阻挡结构由从显示区向非显示区并行排列的五个挡块组14形成，裂纹阻挡结构还可以由如图3中结构所示的从显示区向非显示区并行排列的六个挡块组14形成，裂纹阻挡结构也可以由如图4中结构所示的从显示区向非显示区并行排列的四个挡块组14形成，同理，裂纹阻挡结构可以由一个挡块组14、两个挡块组14、三个挡块组14、七个挡块组14或多个挡块组14形成；每个挡块组14可以包括沿显示区的周向间隔分布的多个挡块，多个挡块组14可以形成层层套设的挡墙。
在上述柔性显示基板1使用过程中，当柔性显示基板1的非显示区出现裂纹时，由于上述柔性显示基板1在与非显示区对应的绝缘层上设置有裂纹阻挡结构，所以，柔性基底11或绝缘层在非显示区的边缘产生的裂纹扩展到裂纹阻挡结构时，裂纹不能通过裂纹阻挡结构继续扩展，因此，上述柔性显示基板1能够通过裂纹阻挡结构阻止非显示区的裂纹朝向显示区扩展，进而将裂纹阻挡在非显示区内，能够阻止外部的水氧通过裂纹进入显示区，并且能够通过裂纹阻挡结构增强柔性显示基板1的非显示区部分的强度，因此，上述柔性显示基板1能够通过裂纹阻挡结构将产生于非显示区的裂纹锁定在非显示区内，并防止裂纹扩展到显示区。
因此，上述柔性显示基板1能够通过裂纹阻挡结构解决因水氧进入有机电致发光结构而影响使用寿命的问题。
一种具体的实施方式中，如图2-图9结构所示，裂纹阻挡结构可以包括至少一个挡块组14，其中，每个挡块组14包括沿显示区的周向间隔分布的多个挡块。如图2结构所示，裂纹阻挡结构包括沿从显示区朝向非显示区的方向并行排列的五个挡块组14，每个挡块组14中，相邻的挡块之间均设置有间隙，使多个挡块形成分体式结构，进而能够分散柔性显示基板1的显示区周边各个方向的应力，防止因出现应力集中现象而产生裂纹，利于柔性显示基板1在各个方向上的弯折。如图3结构所示，柔性显示基板1的裂纹阻挡结 构包括并行排列的六个挡块组14，而图4、图5、图6、图7、图8和图9中的裂纹阻挡结构均包括四个挡块组14；裂纹阻挡结构不限于图1-图9中的挡块组14数量，还可以由一个挡块组14、两个挡块组14，或者三个挡块组14、七个挡块组14等多个挡块组14形成；当裂纹阻挡结构包括多个挡块组14时，多个挡块组14可以形成层层套设的挡墙；多个挡块组14的设置加强了非显示区的柔性显示基板1的抗弯折能力，同时防止了形成于柔性显示基板1周边的裂纹或非显示区的裂纹扩展到显示区。
一种具体的实施方式中，裂纹阻挡结构可以仅沿显示区的一侧边缘设置，也可以包围显示区的两侧或三侧边缘，还可以环绕整个显示区设置，具体设计可以根据实际需求决定。
一种具体的实施方式中，为了提高裂纹阻挡结构阻挡裂纹扩展的效果，如图1、图3和图4结构所示，在至少两个挡块组14中，每相邻的两个挡块组14分别包括第一挡块组141和第二挡块组142；
第一挡块组141包括多个第一挡块1411；每相邻的两个第一挡块1411之间具有第一间隙S1；
第二挡块组142包括多个第二挡块1421；每相邻的两个第二挡块1421之间具有第二间隙S2；
第一间隙S1与第二间隙S2交错设置。
如图3和图4结构所示，每相邻的两个挡块组14中，第一挡块组141中相邻的第一挡块1411之间的第一间隙S1与第二挡块组142中相邻的第二挡块1421之间的第二间隙S2均交错设置，在柔性显示基板1的边缘产生裂纹且裂纹朝向显示区扩展时，裂纹扩展到第一挡块1411之间的第一间隙S1时会继续向第二挡块1421延伸，此时，由于与第一间隙S1相对的第二挡块1421对柔性显示基板1的结构进行加强，使裂纹被第二挡块1421阻挡，进而能够避免裂纹继续向显示区扩展；因此，通过交错设置的多个挡块组14可以对柔性显示基板1进行结构增强，同时提高了裂纹阻挡结构对裂纹的阻挡效果。
如图1和图3结构所示，第一挡块1411和第二挡块1421可以为长方体， 且长方体的长度延伸方向与该挡块组14中挡块的排列方向一致；如图4结构所示，第一挡块1411和第二挡块1421均为波浪形体，且波浪形体的长度延伸方向与该挡块组14中挡块的排列方向一致；另外，第一挡块1411和第二挡块1421还可以为弧形体、圆柱体、圆台、三角柱、正方体、多边形体等其它结构形状，并不局限于附图中所示的结构。
如图5结构所示，第二挡块组142还包括设置于第二间隙S2中的第四挡块1422，第四挡块1422的长度延伸方向与第二挡块1421的长度延伸方向垂直。
如图6结构所示，第一挡块组141还包括设置于第一间隙S1中的第三挡块1412，第三挡块1412的长度延伸方向与第一挡块1411的长度延伸方向垂直；第二挡块组142还包括设置于第二间隙S2中的第四挡块1422，第四挡块1422的长度延伸方向与第二挡块1421的长度延伸方向垂直。
由于第一挡块组141中第三挡块1412的长度延伸方向与第一挡块1411的长度延伸方向垂直，并且第二挡块组142中第四挡块1422的长度延伸方向与第二挡块1421的长度延伸方向垂直，进而，通过第一挡块1411和第三挡块1412、以及第二挡块1421和第四挡块1422能够对柔性显示基板1边缘部分的不同方向进行结构增强，使形成于边缘部分的裂纹无法通过裂纹阻挡结构，进而保护柔性显示基板的显示区，有利于柔性显示基板1在各个方向上弯折时应力的分散。
一种具体的实施方式中，如图7至图9结构所示，挡块组14中，每个挡块的长度延伸方向与多个挡块的排列方向之间也可以具有夹角，即挡块可以相对于其排列方向倾斜设置。
如图8结构所示，每个挡块组14中，每个挡块140的长度延伸方向与多个挡块140的排列方向之间具有夹角a。
如图7结构所示，在至少两个挡块组14中，每相邻的两个挡块组14分别包括第三挡块组143和第四挡块组144；
第三挡块组143包括多个第五挡块1431，每个第五挡块1431的长度延伸 方向与多个第五挡块1431的排列方向之间具有夹角b；
第四挡块组144包括多个第六挡块1441，每个第六挡块1441的长度延伸方向与多个第六挡块1441的排列方向重合。
同理，还可以参考图9，多个挡块组14中包括第五挡块组145和第六挡块组146，第五挡块组145中的挡块1451长度延伸方向与多个挡块1451的排列方向之间具有第一夹角c，而第六挡块组146中的挡块1461长度延伸方向与多个挡块1461的排列方向之间具有第二夹角d，第一夹角c和第二夹角d可以相同，也可以不同，还可以根据实际情况进行具体设置，第一夹角c和第二夹角d可以为0～180°。
当裂纹阻挡结构包括多个挡块组14时，各挡块组14的排列结构可以相同，也可以不同，也不限于图2-图9中示出的结构，还可以采用其他的设置结构。
在上述各种实施例的基础上，挡块组14中每个挡块可以为金属材料制备的挡块140，如，挡块可以与栅极金属层和/或源漏极金属层同层制备而成，同时，各绝缘层可以包括缓冲层121、栅极绝缘层或源漏极绝缘层124，裂纹阻挡结构可以设置于缓冲层121上，也可以设置于栅极绝缘层上，还可以设置于源漏极绝缘层124上；具体的，裂纹阻挡结构可以既包括与栅极金属层同层制备而成的挡块组14，也包括与源漏极金属层同层制备而成的挡块组14；进一步的，裂纹阻挡结构中的多个挡块组14，可以分别设置于缓冲层121、栅极绝缘层和源漏极绝缘层124中的一层、两层或多层上。
如图1和图2结构所示，为了能够更好地防止柔性显示基板1边缘的裂纹扩展到显示区，柔性显示基板1还包括设置于裂纹阻挡结构背离显示区一侧的至少一个环形挡墙15，和/或，设置于裂纹阻挡结构朝向显示区一侧的至少一个阻挡坝16。柔性显示基板1设置有两个环形挡墙15，也可以设置多个环形挡墙15，多个环形挡墙15之间间隔设置。环形挡墙15可以与栅极绝缘层和/或源漏极绝缘层124同层制备而成。阻挡坝16也可以呈围绕显示区的环形设置，在通过喷墨打印形成封装层13中的有机层(图中未示出)时，阻挡 坝16用于防止有机材料溢出。
另外，本公开实施例还提供了一种显示面板，该显示面板包括如上述各种实施例提供的任意一种柔性显示基板1。
并且，本公开实施例还提供了一种显示装置，该显示装置包括上述实施例提供的显示面板。该显示装置可以为手机、电纸书、平板电脑、电视机、显示器等具有显示功能的电子设备。
显然，本领域的技术人员可以对本公开实施例进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (15)

  1. 一种柔性显示基板，包括柔性基底，以及设置于所述柔性基底上的绝缘层；所述柔性基底包括显示区和包围所述显示区的非显示区；其中：
    在与所述非显示区对应的所述绝缘层上设置有裂纹阻挡结构，所述裂纹阻挡结构用于阻止所述非显示区的裂纹朝向所述显示区扩展。
  2. 根据权利要求1所述的柔性显示基板，其中，所述裂纹阻挡结构包括至少一个挡块组，其中，每个所述挡块组包括沿所述显示区的周向间隔分布的多个挡块。
  3. 根据权利要求2所述的柔性显示基板，其中，所述裂纹阻挡结构设置在所述显示区的一侧、两侧或三侧，或者环绕整个所述显示区设置。
  4. 根据权利要求2所述的柔性显示基板，其中，当所述裂纹阻挡结构包括至少两个所述挡块组时，所述至少两个挡块组从所述显示区朝向所述非显示区并行排列。
  5. 根据权利要求4所述的柔性显示基板，其中，在所述至少两个挡块组中，每相邻的两个所述挡块组分别包括第一挡块组和第二挡块组；
    所述第一挡块组包括多个第一挡块；每相邻的两个所述第一挡块之间具有第一间隙；
    所述第二挡块组包括多个第二挡块；每相邻的两个所述第二挡块之间具有第二间隙；
    所述第一间隙与所述第二间隙交错设置。
  6. 根据权利要求5所述的柔性显示基板，其中，所述第一挡块和所述第二挡块均为长方体或波浪形体，且所述长方体或所述波浪形体的长度延伸方向与所述第一挡块的排列方向一致。
  7. 根据权利要求6所述的柔性显示基板，其中，所述第一挡块组还包括设置于所述第一间隙的第三挡块，所述第三挡块的长度延伸方向与所述第一挡块的长度延伸方向垂直设置。
  8. 根据权利要求7所述的柔性显示基板，其中，所述第二挡块组还包括设置于所述第二间隙的第四挡块，所述第四挡块的长度延伸方向与所述第二挡块的长度延伸方向垂直设置。
  9. 根据权利要求4所述的柔性显示基板，其中，每个所述挡块组中，每个所述挡块的长度延伸方向与所述多个所述挡块的排列方向之间具有夹角。
  10. 根据权利要求4所述的柔性显示基板，其中，在所述至少两个挡块组中，每相邻的两个所述挡块组分别包括第三挡块组和第四挡块组；
    所述第三挡块组包括多个第五挡块，每个第五挡块的长度延伸方向与所述多个第五挡块的排列方向之间具有夹角；
    所述第四挡块组包括多个第六挡块，每个第六挡块的长度延伸方向与所述多个第六挡块的排列方向重合。
  11. 根据权利要求2-10任一项所述的柔性显示基板，其中，所述裂纹阻挡结构包括至少两个所述挡块组，所述至少两个挡块组为与栅极金属层和/或源漏极金属层同层制备而成。
  12. 根据权利要求1-10任一项所述的柔性显示基板，其中，所述绝缘层包括缓冲层、栅极绝缘层或源漏极绝缘层。
  13. 根据权利要求1-10任一项所述的柔性显示基板，其中，还包括设置于所述裂纹阻挡结构远离所述显示区一侧的至少一个环形挡墙，和/或，设置于所述裂纹阻挡结构靠近所述显示区一侧的至少一个阻挡坝。
  14. 一种显示面板，包括如权利要求1-13任一项所述的柔性显示基板。
  15. 一种显示装置，包括如权利要求14所述的显示面板。
PCT/CN2018/109354 2017-12-11 2018-10-08 一种柔性显示基板、显示面板及显示装置 WO2019114384A1 (zh)

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