WO2020244083A1 - 柔性显示面板及显示装置 - Google Patents

柔性显示面板及显示装置 Download PDF

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Publication number
WO2020244083A1
WO2020244083A1 PCT/CN2019/105013 CN2019105013W WO2020244083A1 WO 2020244083 A1 WO2020244083 A1 WO 2020244083A1 CN 2019105013 W CN2019105013 W CN 2019105013W WO 2020244083 A1 WO2020244083 A1 WO 2020244083A1
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WIPO (PCT)
Prior art keywords
bending
display panel
bending area
flexible display
area
Prior art date
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Ceased
Application number
PCT/CN2019/105013
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English (en)
French (fr)
Inventor
黄威
张卓
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/613,140 priority Critical patent/US20200388775A1/en
Publication of WO2020244083A1 publication Critical patent/WO2020244083A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • 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
    • 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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/302—Details of OLEDs of OLED structures

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a flexible display panel and a display device.
  • the design of flexible display panels in the bendable structure especially the design of the back plate (BP) that supports and protects the flexible display panel
  • BP back plate
  • challenges such as due to the flexibility of the back plate.
  • Insufficient hardness in the bending area makes it impossible to support the flexible display panel; and, as the flexible display panel is bent, stress concentration is easily generated in the bending area of the flexible display panel, which leads to problems such as cracks in the flexible display panel. , Affecting the life of the flexible display panel.
  • the present disclosure provides a flexible display panel and a display device, which solves the problem that the existing flexible display panel and display device cannot support the flexible display panel due to insufficient hardness in the bending area of the backplane and the bending of the flexible display panel. It is a technical problem that cracks easily occur during folding.
  • the embodiments of the present disclosure provide a flexible display panel, including:
  • the bending zone includes a plurality of first bending zones and a plurality of second bending zones, the material of the first bending zone is metal, and the material of the second bending zone is elastic material.
  • the first bending regions and the plurality of second bending regions are arranged alternately, and the hardness of the first bending region is greater than the hardness of the second bending region.
  • the size of the second bending area in the first direction increases in the second direction, wherein the first direction is For the expansion direction of the bending zone, the second direction is perpendicular to the first direction.
  • the cross-sectional shape of the second bending area located between the two first bending areas is an inverted isosceles trapezoid, which is located between the two second bending areas.
  • the cross-sectional shape of the first bending zone between the zones is a regular isosceles trapezoid.
  • the cross-sectional shape of the first bending area at the edge of the bending area is a right-angle trapezoid, and the second bending area at the edge of the bending area
  • the cross-sectional shape is an inverted right-angled trapezoid.
  • the material of the second bending area is rubber.
  • the cross-sectional areas of the plurality of first bending regions are equal, and the cross-sectional areas of the plurality of second bending regions are equal.
  • the cross-sectional area of the first bending area is 20%-40% of the cross-sectional area of the bending area.
  • the embodiments of the present disclosure provide a flexible display panel, including:
  • the bending zone includes a plurality of first bending zones and a plurality of second bending zones, a plurality of the first bending zones and a plurality of the second bending zones are staggered, and the first bending zone The hardness of a bending zone is greater than the hardness of the second bending zone.
  • the size of the second bending area in the first direction increases in the second direction, wherein the first direction is For the expansion direction of the bending zone, the second direction is perpendicular to the first direction.
  • the cross-sectional shape of the second bending area located between the two first bending areas is an inverted isosceles trapezoid, which is located between the two second bending areas.
  • the cross-sectional shape of the first bending zone between the zones is a regular isosceles trapezoid.
  • the cross-sectional shape of the first bending area at the edge of the bending area is a right-angle trapezoid, and the second bending area at the edge of the bending area
  • the cross-sectional shape is an inverted right-angled trapezoid.
  • the material of the first bending area is metal.
  • the material of the second bending area is an elastic material.
  • the material of the second bending area is rubber.
  • the cross-sectional areas of the plurality of first bending regions are the same, and the cross-sectional areas of the plurality of second bending regions are the same.
  • the cross-sectional area of the first bending area is 20%-40% of the cross-sectional area of the bending area.
  • the embodiments of the present disclosure provide a display device including the above-mentioned flexible display panel.
  • the flexible display panel and the display device provided by the present disclosure adopt a structure in which a plurality of first bending regions and a plurality of second bending regions are alternately arranged in the bending area of the backplane, and the first The hardness of the bending area is greater than that of the second bending area, ensuring that the bending area of the backplane has a certain hardness to support the flexible display panel.
  • the material of the second bending area is an elastic material, which effectively relieves stress concentration. Therefore, the crack generation rate on the flexible display panel is reduced, and the service life and performance of the flexible display panel are improved.
  • FIG. 1 is a schematic diagram of a cross-sectional structure of a flexible display panel provided in the first embodiment of the disclosure
  • FIG. 2 is a schematic diagram of the structure of the backplane of the flexible display panel provided in the first embodiment of the disclosure in an expanded state
  • FIG. 3 is a schematic diagram of a cross-sectional structure of a bent area of a back plate provided in the first embodiment of the disclosure in an expanded state;
  • FIG. 4 is a schematic diagram of a cross-sectional structure in a bent state of a bending area of a back plate provided in the first embodiment of the disclosure
  • FIG. 5 is a schematic structural diagram of a display device provided in the second embodiment of the disclosure.
  • the present disclosure is directed to the prior art flexible display panel and display device. Due to insufficient hardness in the bending area of the backplane, the flexible display panel cannot be supported, and cracks are easily generated when the flexible display panel is bent. This embodiment can Solve the defect.
  • the flexible display panel 10 includes a flexible substrate 200 and a backplane 100 disposed on the back of the flexible substrate 200.
  • the back plate 100 includes a bending area 101 and a non-bending area 102 connected to the bending area 101.
  • the bending area 101 is located in the middle of the non-bending area 102, wherein the bending area 101 is staggered Distribution structure.
  • the flexible display panel 10 may be an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display panel, which is easy to achieve flexible bending, but this is only a case of this embodiment. In other embodiments, the flexible display panel 10 may also be other display panels, which will not be described in detail here.
  • FIG. 2 is a structural schematic diagram of the backplane 100 of the flexible display panel 10 provided by an embodiment of the present disclosure in an unfolded state.
  • the backplane 100 is along a bending axis located in the bending area 101 AA is bent, that is, the non-bending area 102 located on both sides of the bending area 101 is bent around the bending axis AA, and the bending area 101 generates a relatively large stress during bending,
  • the metal wiring located inside the bending area 101 is prone to stress concentration, which may easily cause the metal wiring to break.
  • FIG. 3 is a schematic diagram showing a cross-sectional structure of the bent area 101 of the back plate 100 provided by the embodiment of the present disclosure.
  • the bent area 101 of the back plate 100 includes a plurality of first bends.
  • Area 1011 and multiple second bending areas 1012, multiple first bending areas 1011 and multiple second bending areas 1012 are staggered, and multiple first bending areas 1011 and multiple The cross section of the second bending zone 1012 covers the cross section of the bending zone 101.
  • the hardness of the first bending zone 1011 is greater than the hardness of the second bending zone 1012.
  • the material of the first bending zone 1011 is a metal material, such as iron, silver or alloy material, etc.
  • the bending area 101 has a certain hardness to support and protect the flexible substrate 200, and prevent the flexible substrate 200 from being damaged.
  • the first bending area 1011 is also It may be other materials, which is not particularly limited in this embodiment.
  • the cross-sectional area of the first bending area 1011 is generally 20%-40% of the cross-sectional area of the bending area 101.
  • the material of the second bending area 1012 may be an elastic material, so that the second bending area 1012 has better ductility.
  • the material of the second bending area 1012 is a rubber material. Since the rubber material is a highly elastic polymer material with reversible deformation, it can produce a large deformation under a small external force, and can be restored to its original shape after the external force is removed.
  • the second bending area 1012 may also be made of other elastic materials, which is not particularly limited in this embodiment.
  • FIG. 4 is a schematic diagram of a cross-sectional structure diagram of the bending state of the bending area 101 of the back plate 100 provided by an embodiment of the disclosure.
  • the first bending zone 1011 basically does not deform; however, the second bending zone 1012 is deformed, and the inner surface of the bending zone 101 and The outer surface is subjected to different levels of stress.
  • the size of the second bending area 1012 in the first direction can be sequentially increased along the second direction.
  • One direction is the expansion direction of the bending area 101, and the second direction is perpendicular to the first direction.
  • the second direction is perpendicular to the inner surface and outer surface of the bending area 101, so that the amount of deformation of the second bending area 1012 gradually increases along the second direction, wherein the first The deformation of the second bending area 1012 at the inner surface of the bending area 101 is the largest, and the deformation of the second bending area 1012 at the outer surface of the bending area 101 is the smallest, avoiding the bending The area 101 is broken, thereby reducing the rate of cracks on the flexible display panel 10 and improving the life and performance of the flexible display panel 10; and when the bending area 101 transitions from the bent state to the unfolded state, The second bending area 1012 can be restored to its original shape and has good flexibility.
  • the size of the second bending area 1012 in the first direction increases uniformly along the second direction, so that the amount of deformation of the second bending area 1012 can increase uniformly along the second direction, which is beneficial for making
  • the stress in the bending zone 101 can be better distributed evenly, and local stress concentration can be relieved.
  • the cross-sectional shape of the second bending region 1012 located between the two first bending regions 1011 is a regular isosceles trapezoid
  • the cross-sectional shape of the second bending region 1012 is located between the two second bending regions 1012.
  • the cross-sectional shape of the first bending area 1011 is an inverted isosceles trapezoid. Since the isosceles trapezoid has a highly symmetrical feature, the stress in the bending area 101 can be better evenly distributed and stress concentration is relieved.
  • the shape of the bending area 101 is generally rectangular, if the first bending area 1011 is located at the edge of the bending area 101, the first bending area is located at the edge of the bending area 101.
  • the cross-sectional shape of the bending area 1011 is a right-angled trapezoid; if the second bending area 1012 is located at the edge of the bending area 101, the section of the second bending area 1012 is located at the edge of the bending area 101
  • the shape is an inverted right-angled trapezoid.
  • the first bending area 1011 and the second bending area 1012 may also have other shapes, which is not particularly limited in this embodiment.
  • the cross-sectional areas of the plurality of first bending regions 1011 are equal, and the cross-sectional areas of the plurality of second bending regions 1012 are the same.
  • the hardness distribution of the bending regions 101 can be made uniform, thereby maintaining The stability of the flexible display panel 10; on the other hand, the magnitude of the stress on the bending area 101 can be uniformly relieved, so that the phenomenon of stress concentration can be more uniformly dispersed, and the flexible display panel 10 can be further reduced The rate of crack generation.
  • the number of the first bending area 1011 and the second bending area 1012 is not limited, but in order to make the effect of alleviating the stress on the bending area 101 more significant, the first The number of the bending area 1011 and the second bending area 1012 is set to the maximum according to the specific situation, that is, the first bending area 1011 and the second bending area 1011 and the second bending area in the bending area 101 The distribution of the areas 1012 is set densely to meet the requirements.
  • an embodiment of the present disclosure also provides a display device 20, the display device 20 includes the flexible display panel 10 provided in the first embodiment, and the display device 20 may be a television, a mobile phone, or a notebook computer. Display devices such as smart wearable display devices can also be other display devices.
  • the display device 20 includes the technical effects of the flexible display panel 10, which will not be repeated here.
  • the flexible display panel and the display device provided by the embodiments of the present disclosure adopt a structure in which a plurality of first bending regions and a plurality of second bending regions are alternately arranged in the bending area of the backplane, and the first bending area
  • the hardness of the bending area is greater than that of the second bending area, which ensures that the bending area of the backplane has a certain degree of hardness to support the flexible display panel.
  • the material of the second bending area is an elastic material, which effectively relieves stress concentration, thereby The crack generation rate on the flexible display panel is reduced, and the service life and performance of the flexible display panel are improved.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)

Abstract

一种柔性显示面板及显示装置，柔性显示面板（10）包括柔性基板（200）和背板（100），背板（100）包括弯折区（101）和非弯折区（102），其中弯折区（101）包括多个第一弯折区（1011）及多个第二弯折区（1012），多个第一弯折区（1011）与多个第二弯折区（1012）交错设置，且第一弯折区（1011）的硬度大于第二弯折区（1012）的硬度，保证了背板（100）具有一定的硬度来支撑柔性显示面板（10），缓解了应力集中，减小了裂纹产生率。

Description

柔性显示面板及显示装置 技术领域
本揭示涉及显示技术领域，尤其涉及一种柔性显示面板及显示装置。
 背景技术
随着用户对电子显示装置使用要求、外观设计要求的不断提高，柔性显示面板的开发越来越受到关注，近年来，伴随着智能穿戴显示、曲面显示等装置的兴起和不断发展，柔性显示面板应运而生，并且成为时下显示行业的发展的主流趋势之一，柔性显示面板具有体积小、轻便、易于弯折、低功耗、显示方式多样、安装简便等一系列优异的特性，可以实现显示面板的多元化应用，因此，成为各大面板厂商争相研究的焦点。
然而，目前柔性显示面板在可弯折结构的设计上，特别是对起到支撑和保护柔性显示面板作用的背板（Back Plate，BP）的设计上遇到了挑战，如由于背板上的柔性弯折区硬度不足导致无法对柔性显示面板起到支撑作用；以及，随着柔性显示面板的弯折，导致柔性显示面板的弯折区域局部易产生应力集中，进而导致柔性显示面板产生裂纹等问题，影响柔性显示面板的寿命。
因此，需提供一种新的柔性显示面板及显示装置，来解决上述技术问题。
 技术问题
本揭示提供一种柔性显示面板及显示装置，解决了现有的柔性显示面板及显示装置，由于背板的弯折区硬度不足，导致无法对柔性显示面板起到支撑作用，以及柔性显示面板弯折时易产生裂纹的技术问题。
 技术解决方案
为解决上述问题，本揭示提供的技术方案如下：
本揭示实施例提供一种柔性显示面板，包括：
柔性基板；以及
背板，设置于所述柔性基板的背面，所述背板包括弯折区以及与所述弯折区连接的非弯折区；
其中，所述弯折区包括多个第一弯折区及多个第二弯折区，所述第一弯折区的材料为金属，所述第二弯折区的材料为弹性材料，多个所述第一弯折区与多个所述第二弯折区交错设置，且所述第一弯折区的硬度大于所述第二弯折区的硬度。
在本揭示实施例提供的柔性显示面板中，所述弯折区处于展开状态时，所述第二弯折区在第一方向上的尺寸沿第二方向依次增加，其中所述第一方向为所述弯折区的展开方向，所述第二方向与所述第一方向相垂直。
在本揭示实施例提供的柔性显示面板中，位于两个所述第一弯折区之间的所述第二弯折区的截面形状为倒等腰梯形，位于两个所述第二弯折区之间的所述第一弯折区的截面形状为正等腰梯形。
在本揭示实施例提供的柔性显示面板中，位于所述弯折区边缘的所述第一弯折区的截面形状为正直角梯形，位于所述弯折区边缘的所述第二弯折区的截面形状为倒直角梯形。
在本揭示实施例提供的柔性显示面板中，所述第二弯折区的材料为橡胶。
在本揭示实施例提供的柔性显示面板中，多个所述第一弯折区的截面面积相等，多个所述第二弯折区的截面面积相等。
在本揭示实施例提供的柔性显示面板中，所述第一弯折区的截面面积为所述弯折区的截面面积的20%-40%。
本揭示实施例提供一种柔性显示面板，包括：
柔性基板；以及
背板，设置于所述柔性基板的背面，所述背板包括弯折区以及与所述弯折区连接的非弯折区；
其中，所述弯折区包括多个第一弯折区及多个第二弯折区，多个所述第一弯折区与多个所述第二弯折区交错设置，且所述第一弯折区的硬度大于所述第二弯折区的硬度。
在本揭示实施例提供的柔性显示面板中，所述弯折区处于展开状态时，所述第二弯折区在第一方向上的尺寸沿第二方向依次增加，其中所述第一方向为所述弯折区的展开方向，所述第二方向与所述第一方向相垂直。
在本揭示实施例提供的柔性显示面板中，位于两个所述第一弯折区之间的所述第二弯折区的截面形状为倒等腰梯形，位于两个所述第二弯折区之间的所述第一弯折区的截面形状为正等腰梯形。
在本揭示实施例提供的柔性显示面板中，位于所述弯折区边缘的所述第一弯折区的截面形状为正直角梯形，位于所述弯折区边缘的所述第二弯折区的截面形状为倒直角梯形。
在本揭示实施例提供的柔性显示面板中，所述第一弯折区的材料为金属。
在本揭示实施例提供的柔性显示面板中，所述第二弯折区的材料为弹性材料。
在本揭示实施例提供的柔性显示面板中，所述第二弯折区的材料为橡胶。
在本揭示实施例提供的柔性显示面板中，多个所述第一弯折区的截面面积相等，多个所述第二弯折区的截面面积相等。
在本揭示实施例提供的柔性显示面板中，所述第一弯折区的截面面积为所述弯折区的截面面积的20%-40%。
本揭示实施例提供一种显示装置，包括上述柔性显示面板。
 有益效果
本揭示的有益效果为：本揭示提供的柔性显示面板及显示装置，通过将背板的弯折区采用多个第一弯折区与多个第二弯折区交错设置的结构，且第一弯折区的硬度大于第二弯折区的硬度，保证了背板的弯折区具有一定的硬度来支撑柔性显示面板，同时第二弯折区的材料为弹性材料，有效地缓解应力集中，从而减小了所述柔性显示面板上的裂纹产生率，提高了柔性显示面板的寿命及性能。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是揭示的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本揭示实施例一提供的一种柔性显示面板的截面结构示意图；
图2为本揭示揭示实施例一提供的一种柔性显示面板的背板展开状态结构示意图；
图3为本揭示实施例一提供的一种背板的弯折区的展开状态截面结构示意图；
图4为本揭示实施例一提供的一种背板的弯折区的弯折状态截面结构示意图；
图5为本揭示实施例二提供的一种显示装置的结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本揭示可用以实施的特定实施例。本揭示所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本揭示，而非用以限制本揭示。在图中，结构相似的单元是用以相同标号表示。
本揭示针对现有技术的的柔性显示面板及显示装置，由于背板弯折区硬度不足，导致无法对柔性显示面板起到支撑作用，以及柔性显示面板弯折时易产生裂纹，本实施例能够解决该缺陷。
实施例一
如图1所示为本揭示实施例提供的一种柔性显示面板10的截面结构示意图，所述柔性显示面板10包括柔性基板200以及设置于所述柔性基板200的背面的背板100，所述背板100包括弯折区101以及与所述弯折区101连接的非弯折区102，所述弯折区101位于所述非弯折区102中间，其中所述弯折区101内呈交错分布结构。需要说明的是，所述柔性显示面板10可为有机发光二极管（Organic Light-Emitting Diode，OLED）显示面板，易于实现柔性弯折，但此仅为本实施例的一种情况，在可选的其他实施方式中，所述柔性显示面板10还可以为其他显示面板，在此不作赘述。
继续参考图2，图2为本揭示实施例提供的所述柔性显示面板10的所述背板100展开状态结构示意图，所述背板100沿着位于所述弯折区101内的弯折轴线A-A进行弯折，即位于所述弯折区101两侧的所述非弯折区102围绕所述弯折轴线A-A进行弯折，所述弯折区101在弯折时产生较大的应力，位于所述弯折区101内部的金属走线易发生应力集中的现象，从而易导致所述金属走线的断裂。
如图3所示为本揭示实施例提供的所述背板100的所述弯折区101的展开状态截面结构示意图，所述背板100的所述弯折区101包括多个第一弯折区1011及多个第二弯折区1012，多个所述第一弯折区1011与多个所述第二弯折区1012交错设置，且多个所述第一弯折区1011与多个所述第二弯折区1012的截面布满所述弯折区101的截面。
其中，所述第一弯折区1011的硬度大于所述第二弯折区1012的硬度，具体地，所述第一弯折区1011的材料为金属材料，例如铁、银或合金材料等，使得所述弯折区101具有一定的硬度来支撑及保护所述柔性基板200，避免所述柔性基板200受到破坏，当然，在其他可选的实施例中，所述第一弯折区1011也可以为其他材料，本实施例对此不作特殊限定。优选地，为了保证所述弯折区101具有足够的硬度，所述第一弯折区1011的截面面积一般为所述弯折区101的截面面积的20%-40%。
进一步地，所述第二弯折区1012的材料可选为弹性材料，使得所述第二弯折区1012具有较好的延展性能。优选地，所述第二弯折区1012的材料为橡胶材料，由于橡胶材料为具有可逆形变的高弹性聚合物材料，在很小的外力作用下能产生较大形变，除去外力后能恢复原状。当然，在其他可选的实施例中，所述第二弯折区1012也可以为其他弹性材料，本实施例对此不作特殊限定。
如图4所示为本揭示实施例提供的一种所述背板100的所述弯折区101的弯折状态截面结构示意图，当所述弯折区101进行弯折时，由于所述第一弯折区1011的硬度较大，因此所述第一弯折区1011基本上不产生形变；然而，所述第二弯折区1012则发生形变，且所述弯折区101的内表面与外表面受到不同大小的应力。为了使所述弯折区101的内表面与外表面产生不同程度的形变量，因此可将所述第二弯折区1012在第一方向上的尺寸沿第二方向依次增加，其中所述第一方向为所述弯折区101的展开方向，所述第二方向与所述第一方向相垂直。
可以理解地，所述第二方向与所述弯折区101的内表面与外表面相垂直，使得所述第二弯折区1012的形变量沿所述第二方向逐渐增大，其中所述第二弯折区1012在所述弯折区101的内表面处的形变量最大，所述第二弯折区1012在所述弯折区101的外表面处的形变量最小，避免所述弯折区101发生断裂，从而减小所述柔性显示面板10上的裂纹产生率，提高所述柔性显示面板10的寿命及性能；且当所述弯折区101从弯折状态过渡到展开状态时，所述第二弯折区1012可恢复至原有形状，柔性性能较好。
优选地，所述第二弯折区1012在第一方向上的尺寸沿第二方向均匀增加，使得所述第二弯折区1012的形变量能够沿所述第二方向均匀增加，有利于使得所述弯折区101的应力能够更好地平均分布，缓解局部应力集中。
优选地，位于两个所述第一弯折区1011之间的所述第二弯折区1012的截面形状为正等腰梯形，则位于两个所述第二弯折区1012之间的所述第一弯折区1011的截面形状为倒等腰梯形，由于等腰梯形具有高度对称的特点，因此使得所述弯折区101的应力能够更好地平均分布，缓解应力集中。同时，由于所述弯折区101的形状一般为矩形，因此若所述第一弯折区1011位于所述弯折区101边缘，则位于所述弯折区101边缘的部分所述第一弯折区1011的截面形状为正直角梯形；若所述第二弯折区1012位于所述弯折区101边缘，则位于所述弯折区101边缘的部分所述第二弯折区1012的截面形状为倒直角梯形。当然，在其他可选的实施例中，所述第一弯折区1011与所述第二弯折区1012也可以为其他形状，本实施例对此不作特殊限定。
优选地，多个所述第一弯折区1011的截面面积相等，多个所述第二弯折区1012的截面面积相等，一方面可使得所述弯折区101的硬度分布均匀，从而保持所述柔性显示面板10的稳定性；另一方面，可均匀缓解所述弯折区101受到的应力大小，从而能够更加均匀地分散应力集中的现象，进一步减小了所述柔性显示面板10上的裂纹产生率。
进一步地，所述第一弯折区1011与所述第二弯折区1012的数量并无限制，但为了使缓解所述弯折区101受到应力的效果更为显著，可将所述第一弯折区1011与所述第二弯折区1012的数目根据具体情况设置成最大，也就是说，将所述弯折区101内的所述第一弯折区1011与所述第二弯折区1012的分布设置得较为密集以满足要求。
实施例二
如图5所示，本揭示实施例还提供一种显示装置20，所述显示装置20包括实施例一提供的所述柔性显示面板10，所述显示装置20可以为电视机、手机、笔记本电脑、智能穿戴显示装置等显示装置，也可以为其他显示装置，所述显示装置20包含所述柔性显示面板10所具有的技术效果，在此不再赘述。
有益效果为：本揭示实施例提供的柔性显示面板及显示装置，通过将背板的弯折区采用多个第一弯折区与多个第二弯折区交错设置的结构，且第一弯折区的硬度大于第二弯折区的硬度，保证了背板的弯折区具有一定的硬度来支撑柔性显示面板，同时第二弯折区的材料为弹性材料，有效地缓解应力集中，从而减小了所述柔性显示面板上的裂纹产生率，提高了柔性显示面板的寿命及性能。
综上所述，虽然本揭示已以优选实施例揭露如上，但上述优选实施例并非用以限制本揭示，本领域的普通技术人员，在不脱离本揭示的精神和范围内，均可作各种更动与润饰，因此本揭示的保护范围以权利要求界定的范围为准。

Claims (17)

  1. 一种柔性显示面板，包括：
    柔性基板；以及
    背板，设置于所述柔性基板的背面，所述背板包括弯折区以及与所述弯折区连接的非弯折区；
    其中，所述弯折区包括多个第一弯折区及多个第二弯折区，所述第一弯折区的材料为金属，所述第二弯折区的材料为弹性材料，多个所述第一弯折区与多个所述第二弯折区交错设置，且所述第一弯折区的硬度大于所述第二弯折区的硬度。
  2. 根据权利要求1所述的柔性显示面板，其中所述弯折区处于展开状态时，所述第二弯折区在第一方向上的尺寸沿第二方向依次增加，其中所述第一方向为所述弯折区的展开方向，所述第二方向与所述第一方向相垂直。
  3. 根据权利要求2所述的柔性显示面板，其中位于两个所述第一弯折区之间的所述第二弯折区的截面形状为倒等腰梯形，位于两个所述第二弯折区之间的所述第一弯折区的截面形状为正等腰梯形。
  4. 根据权利要求2所述的柔性显示面板，其中位于所述弯折区边缘的所述第一弯折区的截面形状为正直角梯形，位于所述弯折区边缘的所述第二弯折区的截面形状为倒直角梯形。
  5. 根据权利要求1所述的柔性显示面板，其中所述第二弯折区的材料为橡胶。
  6. 根据权利要求1所述的柔性显示面板，其中多个所述第一弯折区的截面面积相等，多个所述第二弯折区的截面面积相等。
  7. 根据权利要求6所述的柔性显示面板，其特征在于，所述第一弯折区的截面面积为所述弯折区的截面面积的20%-40%。
  8. 一种柔性显示面板，包括：
    柔性基板；以及
    背板，设置于所述柔性基板的背面，所述背板包括弯折区以及与所述弯折区连接的非弯折区；
    其中，所述弯折区包括多个第一弯折区及多个第二弯折区，多个所述第一弯折区与多个所述第二弯折区交错设置，且所述第一弯折区的硬度大于所述第二弯折区的硬度。
  9. 根据权利要求8所述的柔性显示面板，其中所述弯折区处于展开状态时，所述第二弯折区在第一方向上的尺寸沿第二方向依次增加，其中所述第一方向为所述弯折区的展开方向，所述第二方向与所述第一方向相垂直。
  10. 根据权利要求9所述的柔性显示面板，其中位于两个所述第一弯折区之间的所述第二弯折区的截面形状为倒等腰梯形，位于两个所述第二弯折区之间的所述第一弯折区的截面形状为正等腰梯形。
  11. 根据权利要求9所述的柔性显示面板，其中位于所述弯折区边缘的所述第一弯折区的截面形状为正直角梯形，位于所述弯折区边缘的所述第二弯折区的截面形状为倒直角梯形。
  12. 根据权利要求8所述的柔性显示面板，其中所述第一弯折区的材料为金属。
  13. 根据权利要求8所述的柔性显示面板，其中所述第二弯折区的材料为弹性材料。
  14. 根据权利要求13所述的柔性显示面板，其中所述第二弯折区的材料为橡胶。
  15. 根据权利要求8所述的柔性显示面板，其中多个所述第一弯折区的截面面积相等，多个所述第二弯折区的截面面积相等。
  16. 根据权利要求15所述的柔性显示面板，其中所述第一弯折区的截面面积为所述弯折区的截面面积的20%-40%。
  17. 一种显示装置，包括权利要求8所述的柔性显示面板。
PCT/CN2019/105013 2019-06-06 2019-09-10 柔性显示面板及显示装置 Ceased WO2020244083A1 (zh)

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