WO2021189550A1 - 柔性显示面板与显示设备 - Google Patents

柔性显示面板与显示设备 Download PDF

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Publication number
WO2021189550A1
WO2021189550A1 PCT/CN2020/084185 CN2020084185W WO2021189550A1 WO 2021189550 A1 WO2021189550 A1 WO 2021189550A1 CN 2020084185 W CN2020084185 W CN 2020084185W WO 2021189550 A1 WO2021189550 A1 WO 2021189550A1
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WO
WIPO (PCT)
Prior art keywords
display panel
bending area
flexible display
corners
bending
Prior art date
Application number
PCT/CN2020/084185
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English (en)
French (fr)
Inventor
欧阳齐
金武谦
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to EP20861974.2A priority Critical patent/EP4131390A4/en
Priority to US16/956,547 priority patent/US11515382B2/en
Publication of WO2021189550A1 publication Critical patent/WO2021189550A1/zh

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Classifications

    • 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
    • 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
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • 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
    • 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
    • H10K59/87—Passivation; Containers; Encapsulations
    • 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
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • 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

  • This application relates to the field of display technology, in particular to a flexible display panel and a display device.
  • the present application provides a flexible display panel and a display device.
  • the flexible display panel can effectively reduce the risk of metal traces breaking due to excessive stress at the bent corners.
  • the present invention provides a flexible display panel, the flexible display panel including:
  • the non-bending area, the shape of the non-bending area is a first rectangle whose four corners are all arc corners;
  • At least one bending area is disposed around the non-bending area and connected to the non-bending area, and the shape of the at least one bending area is a second rectangle, the second One side of the rectangle is connected to the straight side of the first rectangle whose four corners are all arc corners, wherein two adjacent circles correspond to the straight sides of the at least one bending area connected to the non-bending area At least one of the arc angles has a concave wave shape.
  • the bending direction of the concave wave shape is toward the inside of the non-bending area.
  • the length of one side of the at least one bending area connected to the bending area is greater than the length of two adjacent and perpendicular sides.
  • the concave wave shape has multiple crests and multiple troughs.
  • the plurality of wave crests and the plurality of wave troughs in the concave wave shape have various distances between them.
  • the flexible display panel includes four bending areas, which are respectively connected to four straight sides of a first rectangle whose four corners of the non-bending area are all rounded corners. , And at least one of the four corners of the non-bending area has a concave wave shape, wherein the bending direction of the concave wave shape is toward the inside of the non-bending area.
  • all four corners of the non-bending area have a concave wave shape.
  • the concave wave shapes of the four corners of the non-bending area are the same or different from each other.
  • the flexible display panel in an edge area of the flexible display panel, the flexible display panel further includes a plurality of metal traces, and at least one of the metal traces runs along the inner portion of the edge area.
  • the concave wave shape is adaptively arranged.
  • At least one of the metal traces is adaptively arranged along the concave wave shape in the edge area, and the remaining metal traces are in the edge area.
  • the width of the concave wave shape decreases.
  • the flexible display panel includes:
  • the array layer is arranged on the substrate
  • the OLED device layer is arranged on the array layer.
  • the thin film encapsulation layer is arranged on the OLED device layer,
  • the array layer includes the plurality of metal traces, and the plurality of metal traces includes a reset signal line and a cathode potential line.
  • the present invention also provides a display device including the aforementioned flexible display panel.
  • the present invention provides a flexible display panel including a bending area and a non-bending area, by designing the corner at the junction of the bending area and the non-bending area as an arc-shaped corner , So that the stress caused by the bending at this place is effectively released, thereby reducing the risk of metal wire breakage and improving the yield of the display panel.
  • FIG. 1 is a schematic diagram of a plane structure of a flexible display panel provided in the prior art
  • FIG. 2 is a schematic plan view of a first flexible display panel provided by an embodiment of the present invention.
  • FIG. 3 is a schematic plan view of a second flexible display panel provided by an embodiment of the present invention.
  • FIG. 4 is a schematic plan view of a third type of flexible display panel provided by an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a planar structure of a fourth flexible display panel provided by an embodiment of the present invention.
  • FIG. 6 is a schematic plan view of a fifth flexible display panel provided by an embodiment of the present invention.
  • FIG. 7 is a schematic plan view of a sixth flexible display panel provided by an embodiment of the present invention.
  • FIG. 8 is a schematic plan view of a seventh flexible display panel provided by an embodiment of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, “plurality” means two or more than two, unless otherwise specifically defined.
  • a plan structure diagram of an existing four-bend display panel including a non-bending area 11 and a bending area 12, the bending area 12 includes four connecting to the non-bending area 11
  • the bending areas 121, 122, 123, 124 on the upper, lower, left, and right sides have sharp inward corners at the junction of the non-bending area 11 and the bending area 12, where they are bent During the process, a large stress will accumulate, making the metal traces at that place easy to break and cause poor display.
  • an embodiment of the present invention provides a flexible display panel.
  • the flexible display panel includes a non-bending area 21.
  • the curved direction of the concave wave shape is toward the inside of the non-bending area 21.
  • the length of one side of the bending zone 22 connected to the non-bending zone 21 is greater than the length of the adjacent and perpendicular two sides, that is, the long side of the bending zone 22 It is connected to the non-bending area 21.
  • the present invention provides a flexible display panel.
  • the single-curved flexible display panel is improved to a four-curved flexible display panel.
  • the flexible display The panel includes a non-bending area 21 and a bending area 22.
  • the shape of the non-bending area 21 is a first rectangle with all four rounded corners.
  • the bending area 22 includes a non-bending area 21.
  • the curved direction of the concave wave shape is toward the inside of the non-bending area 21, for example, the upper right arc corner has a concave wave shape, specifically, the concave wave shape includes two wave crests (will be The protruding direction of the non-bending area 21 is defined as a wave crest) and a wave trough.
  • the two wave crests are set in the bending area corresponding to the arc angle, which can effectively release the larger bending produced here. Stress to avoid the risk of breaking the metal traces here.
  • the flexible display panel further includes metal traces 23 (the figure only exemplarily shows the metal traces at the edge of the flexible display panel).
  • the metal traces 23 are adaptively arranged along the shape of the edge area. In this way, by setting the corners of the non-bending area 22 to have a concave wave shape, correspondingly, the metal traces of the bending area are also The smooth curve shape can effectively release the stress there, reduce the risk of metal wire breakage, and improve the yield of the display panel.
  • the flexible display panel includes:
  • a substrate, the substrate is a flexible substrate, usually composed of a polyimide film
  • the array layer is arranged on the substrate
  • the OLED device layer is arranged on the array layer.
  • the thin film encapsulation layer is arranged on the OLED device layer,
  • the array layer includes the metal traces.
  • the metal traces in the edge area of the flexible display panel include signal reset lines, cathode potential lines, and traces for transmitting test line numbers, etc. The present invention does not specifically limit this.
  • each bending area is correspondingly bent downward to present a three-dimensional display effect.
  • the flexible display panel also includes a non-bending area 21 and a bending area 22, the shape of the non-bending area 21 is a first rectangle with four rounded corners, the bending area 22 includes The bending areas 221, 222, 223, and 224 on the upper, upper, lower, left and right sides of the non-bending area 21 are different in that each of the four corners of the non-bending area 21
  • the ground has a concave wave shape.
  • the metal traces 23 in the edge area of the flexible display panel are adaptively configured with the concave wave shape, that is, they are smoothly curved at each corner, so as to maximize Reduce the risk of breaking the metal trace 23 caused by bending attraction.
  • the flexible display panel also includes a non-bending area 21 and a bending area 22.
  • the shape is a first rectangle whose four corners are all arc corners, and the bending area 22 includes bending areas 221, 222 disposed on the upper, upper, lower, left, and right sides of the non-bending area 21 , 223, 224, wherein the upper right arc corner of the non-bending area 21 has a concave wave shape, and the bending direction of the concave wave shape is toward the inside of the non-bending area 21, different Yes, the concave wave shape includes three wave crests (the direction protruding to the non-bending area 21 is defined as wave crests) and two wave troughs, of which two wave crests are set in the bending area corresponding to the arc angle , The other wave crest is set between the foregoing two. With this design, the bending stress can be further released,
  • the concave wave shape may have a greater number of wave crests and wave troughs, and according to actual design requirements, there may be various spacings between the multiple wave crests and wave troughs of the concave wave shape.
  • the concave wave shapes of the four corners of the non-bending area are the same or different from each other.
  • the four corners of the non-bending area all have a concave wave shape with two crests and one trough, or two of the four corners of the non-bending area have two crests and a concave trough.
  • the wave shape, the other two have three wave crests and two wave troughs with concave wave shapes. Other situations will not be repeated here.
  • the metal traces in the edge area of the flexible display panel are all adaptively arranged along the concave wave shape.
  • part of the metal traces can also be adaptively arranged along the concave wave shape.
  • Another part of the metal traces are arranged along the original shape before improvement.
  • the configuration is slightly adjusted, in which the signal reset line 232 is adaptively configured along the concave wave shape, and the cathode potential line 231 is configured along the original shape before the improvement.
  • the width of its trace can be reduced (the width of the entire trace or only the width of the concave wave shape can be reduced) Even if the structure shown in FIG. 7 is formed, the risk of breakage of the cathode potential lines 231 that are not all adaptively arranged along the concave wave shape can also be reduced to a certain extent.
  • a flexible display panel is also provided. Please refer to FIG. 8 for the specific structure.
  • the general structure of the flexible display panel has not been changed except that the configuration of the metal wiring is slightly adjusted.
  • the signal reset line 232 is adaptively arranged along the concave wave shape, and the cathode potential line 231 is disconnected in the area where the concave wave shape is arranged, and is electrically connected to the signal reset line 232 in the area
  • the concave wave-shaped wiring part, that is, the signal reset line 232 and the cathode potential line 231 jointly realize the transmission of electrical signals through a concave wave wiring.
  • the present invention also provides a display device including the aforementioned flexible display panel.

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

Abstract

一种柔性显示面板与显示设备，柔性显示面板包括：非弯折区（21），非弯折区（21）的形状为四角均为圆弧角的第一矩形；以及至少一个弯折区（22），弯折区（22）配置于非弯折区（21）的周围并与非弯折区（21）连接，且至少一个弯折区（22）的形状为第二矩形，第二矩形的一侧边与四角均为圆弧角的第一矩形的一直线边相连，其中与非弯折区（21）连接的至少一个弯折区（22）的直线边相邻的两圆弧角中至少一者具有内凹的波浪形状。通过该设计使得该处因弯折产生的应力有效释放，从而降低金属走线断裂风险，提升显示面板的良率。

Description

柔性显示面板与显示设备 技术领域
本申请涉及显示技术领域，具体涉及一种柔性显示面板与显示设备。
 背景技术
回顾智能手机近十年来的发展历程，智能手机的外观以及功能发生了翻天覆地的变化，为了获得更有力的市场竞争力，各大手机生产厂商正在各个方面进行着研发与优化。
近几年来，全面屏显示成为了研究热点之一，为了实现更好的视觉体验， “瀑布”屏（即双曲面设计，两侧的屏幕进行弯曲并且弯曲的弧度一样）设计已出现在了现有的智能手机中，因其出色的视觉效果以及符合人体工学的优点，受到了许多消费者的追捧与青睐。与此同时，为了更进一步提升屏占比，优化显示效果，各厂商相继开始研发四曲面手机，即曲面屏幕弯向上下左右四个方向，然而，该四曲面手机对显示屏幕的可靠性要求极高，在屏幕弯曲的过程中，弯折的角落处存在很大的应力，导致此处的金属走线存在较大的断裂风险，进而导致显示不良。
 技术问题
本申请提供一种柔性显示面板与显示设备，该柔性显示面板可有效降低弯折角落因应力过大而导致金属走线断裂的风险。
 技术解决方案
为解决上述问题，第一方面，本发明提供一种柔性显示面板，所述柔性显示面板包括：
非弯折区，所述非弯折区的形状为四角均为圆弧角的第一矩形；以及
至少一个弯折区，所述弯折区配置于所述非弯折区的周围并与所述非弯折区连接，且所述至少一个弯折区的形状为第二矩形，所述第二矩形的一侧边与所述四角均为圆弧角的第一矩形的一直线边相连，其中与所述非弯折区连接的所述至少一个弯折区的直线边对应的相邻两圆弧角中至少一者具有内凹的波浪形状。
在本发明实施例提供的一柔性显示面板中，所述内凹的波浪形状的弯曲方向朝向所述非弯折区的内部。
在本发明实施例提供的一柔性显示面板中，所述至少一个弯折区与所述弯折区相连的一侧边的长度大于与其相邻且垂直的两侧边的长度。
在本发明实施例提供的一柔性显示面板中，所述内凹的波浪形状具有多个波峰和多个波谷。
在本发明实施例提供的一柔性显示面板中，所述内凹的波浪形状的多个波峰和多个波谷之间具有多种间距。
在本发明实施例提供的一柔性显示面板中，所述柔性显示面板包括四个弯折区，分别与所述非弯折区的四角均为圆弧角的第一矩形的四个直线边相连，且所述非弯折区的四角中至少一者具有内凹的波浪形状，其中，所述内凹的波浪形状的弯曲方向朝向所述非弯折区的内部。
在本发明实施例提供的一柔性显示面板中，所述非弯折区的四角均具有内凹的波浪形状。
在本发明实施例提供的一柔性显示面板中，所述非弯折区的四角的内凹的波浪形状彼此相同或相异。
在本发明实施例提供的一柔性显示面板中，在所述柔性显示面板的边缘区域，所述柔性显示面板还包括若干条金属走线，至少一条所述金属走线沿边缘区域的所述内凹的波浪形状适应性地配置。
在本发明实施例提供的一柔性显示面板中，至少一条所述金属走线沿边缘区域的所述内凹的波浪形状适应性地配置，剩余的所述金属走线在所述边缘区域的内凹的波浪形状处宽度减小。
在本发明实施例提供的一柔性显示面板中，所述柔性显示面板包括：
基板；
阵列层，配置与所述基板上；
OLED器件层，配置与所述阵列层上；以及
薄膜封装层，配置与所述OLED器件层上，
其中，所述阵列层中包括所述的若干条金属走线，所述若干条金属走线包括复位信号线与阴极电位线。
另一方面，本发明还提供了一种显示设备，所述显示设备包括前述的柔性显示面板。
 有益效果
相较于现有技术，本发明提供了一种柔性显示面板，包括弯折区与非弯折区，通过将所述弯折区与所述非弯折区交界处的拐角设计为弧形拐角，使得该处因弯折产生的应力有效释放，从而降低金属走线断裂风险，提升显示面板的良率。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，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是现有技术提供一种柔性显示面板的平面结构示意图；
图2是本发明实施例提供第一种柔性显示面板的平面结构示意图；
图3是本发明实施例提供第二种柔性显示面板的平面结构示意图；
图4是本发明实施例提供第三种柔性显示面板的平面结构示意图；
图5是本发明实施例提供第四种柔性显示面板的平面结构示意图。
图6是本发明实施例提供第五种柔性显示面板的平面结构示意图；
图7是本发明实施例提供第六种柔性显示面板的平面结构示意图；
图8是本发明实施例提供第七种柔性显示面板的平面结构示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，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所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请中，“示例性”一词用来表示“用作例子、例证或说明”。本申请中被描述为“示例性”的任何实施例不一定被解释为比其它实施例更优选或更具优势。为了使本领域任何技术人员能够实现和使用本发明，给出了以下描述。在以下描述中，为了解释的目的而列出了细节。应当明白的是，本领域普通技术人员可以认识到，在不使用这些特定细节的情况下也可以实现本发明。在其它实例中，不会对公知的结构和过程进行详细阐述，以避免不必要的细节使本发明的描述变得晦涩。因此，本发明并非旨在限于所示的实施例，而是与符合本申请所公开的原理和特征的最广范围相一致。
请参照图1，提供了一种现有的四弯曲显示面板的平面结构图，包括非弯折区11以及弯折区12，所述弯折区12包括四个连接在所述非弯折区11上侧、下侧、左侧以及右侧的弯折区121、122、123、124，在非弯折区11与弯折区12交界连接处存在向内的尖锐的拐角，此处弯折的过程中，会积累较大的应力，使得该处的金属走线易发生断裂从而引起显示不良。
基于此，本发明实施例提供了一种柔性显示面板，其平面结构图请参阅图2，所述柔性显示面板包括非弯折区21，所述非弯折区21的形状为四角均为圆弧角的第一矩形，以及设置并连接在所述非弯折区右侧的弯折区22，所述非弯折区21的形状为第二矩形，所述第二矩形的左侧边与所述四角均为圆弧角的第一矩形的右直线边相连，其中与所述非弯折区21连接的所述弯折区22的直线边相邻的两圆弧角中至少一者具有内凹的波浪形状，该内凹的波浪形状设置于圆弧角对应的弯折区域，即可有效地释放此处弯折产生的较大的应力，避免此处的金属走线断裂的风险。
在本实施例中，所述内凹的波浪形状的弯曲方向朝向所述非弯折区21的内部。
在本实施例中，所述弯折区22与所述非弯折区21相连的一侧边的长度大于与其相邻且垂直的两侧边的长度，即所述弯折区22的长边与所述非弯折区21相连。
本发明另一实施例提供了一种柔性显示面板，在前一实施例的基础上，将单曲面柔性显示面板改进为四曲面柔性显示面板，具体地，请参阅图3，所述柔性显示面板包括非弯折区21与弯折区22，所述非弯折区21的形状为四角均为圆弧角的第一矩形，所述弯折区22包括设置于所述非弯折区21上侧、下侧、左侧以及右侧的弯折区221、222、223、224，其中，所述非弯折区21的四角中至少一者具有内凹的波浪形状，其中，所述内凹的波浪形状的弯曲方向朝向所述非弯折区21的内部，例如所述右上的圆弧角具有内凹的波浪形状，具体地，所述内凹的波浪形状包括两个波峰（将向所述非弯折区21凸出的方向定义为波峰）和一个波谷，所述的两个波峰设置于圆弧角对应的弯折区域，即可有效地释放此处弯折产生的较大的应力，避免此处的金属走线断裂的风险。
在本实施例中，所述柔性显示面板还包括金属走线23（图中仅示例性地示出了所柔性显示面板边缘位置的金属走线），在所述柔性显示面板的边缘区域，所述金属走线23沿边缘区域的形状适应性地配置，如此以来，通过将所述非弯折区22的角落设置为具有内凹的波浪形状，相应地，弯折区的金属走线也为圆滑的曲线型，即可有效地释放该处的应力，降低金属走线断裂的风险，从而提升显示面板的良率。
进一步地，所述柔性显示面板包括：
基板，所述基板为柔性基板，通常由聚酰亚胺膜构成；
阵列层，配置与所述基板上；
OLED器件层，配置与所述阵列层上；以及
薄膜封装层，配置与所述OLED器件层上，
其中，所述阵列层中包括所述的金属走线，通常情况下，该柔性显示面板边缘区域的所述金属走线包括信号复位线、阴极电位线以及用于传输测试线号的走线等，本发明对此不作特殊限定。
可以理解的是，本发明实施例所提供的柔性显示面板在实际的使用过程中，各个弯折区分别对应地向下弯曲，呈现立体的显示效果。
为了更好的降低柔性显示面板弯折区金属走线断裂的风险，在前一实施例的基础之上，本发明的另一实施例还提供了一种柔性显示面板，其平面结构图请参阅图4，所述柔性显示面板同样包括非弯折区21与弯折区22，所述非弯折区21的形状为四角均为圆弧角的第一矩形，所述弯折区22包括设置于所述非弯折区21上侧、上侧、下侧、左侧以及右侧的弯折区221、222、223、224，不同的是，所述非弯折区21的四角中均各自地具有内凹的波浪形状，相应地所述柔性显示面板边缘区域的金属走线23随着内凹的波浪形状适应性地配置，即在各个拐角处均为平滑的曲线型，从而最大限度的降低因弯折引力导致的金属走线23断裂的风险。
本发明另一实施例还提供了一种柔性显示面板，其平面结构图请参阅图5，所述柔性显示面板同样包括非弯折区21与弯折区22，所述非弯折区21的形状为四角均为圆弧角的第一矩形，所述弯折区22包括设置于所述非弯折区21上侧、上侧、下侧、左侧以及右侧的弯折区221、222、223、224，其中，所述非弯折区21的右上的圆弧角具有内凹的波浪形状，所述内凹的波浪形状的弯曲方向朝向所述非弯折区21的内部，不同的是，所述内凹的波浪形状包括三个波峰（将向所述非弯折区21凸出的方向定义为波峰）和两个波谷，其中两个波峰设置于圆弧角对应的弯折区域，另一个波峰设置于前述两者之间，通过该设计，可进一步地释放弯折应力，从而降低金属走线23断裂的风险。
当然，所述内凹的波浪形状可具有更多数量的波峰和波谷，并且根据实际设计需求，所述内凹的波浪形状的多个波峰和多个波谷之间可具有多种间距。
需要补充的是，当所述非弯折区的四角均具有内凹的波浪形状，所述非弯折区的四角的内凹的波浪形状彼此相同或相异。例如，所述非弯折区的四角均具有两个波峰与一个波谷的内凹的波浪形状，或是所述非弯折区的四角中的两者具有两个波峰与一个波谷的内凹的波浪形状，另两者具有三个波峰与两个波谷的内凹的波浪形状，其他情形在此不再赘述。
在前述的实施例中，柔性显示面板边缘区域的金属走线均沿所述内凹的波浪形状适应性地配置，当然，也可部分金属走线沿所述内凹的波浪形状适应性地配置，另一部分金属走线沿改善前的原形状配置，具体地，请参见图6，示例性地给出的一个柔性显示面板的平面结构示意图，其大体结构未作变更，仅在于金属走线的配置方式稍作调整，其中，信号复位线232沿所述内凹的波浪形状适应性地配置，而阴极电位线231沿改善前的原形状配置。
进一步地，为了减小上述的阴极电位线231在弯折区的断裂风险，可将其走线宽度降低（整条走线宽度减小或仅在内凹的波浪形状处宽度减小均可），即形成如图7所示的结构，也可一定程度的降低所述未均沿所述内凹的波浪形状适应性地配置的阴极电位线231的断裂风险。
在本发明的另一实施例中，还提供了一种柔性显示面板，具体结构请参见图8，该柔性显示面板的大体结构未作变更，仅在于金属走线的配置方式稍作调整，其中，信号复位线232沿所述内凹的波浪形状适应性地配置，而阴极电位线231在配置有内凹的波浪形状的区域断开，电连接至所述信号复位线232在该处的内凹波浪形状的走线部分，即所述信号复位线232与所述阴极电位线231共同通过一条内凹的波浪走线实现电信号的传输。
本发明还提供了一种显示设备，包括前述的柔性显示面板。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见上文针对其他实施例的详细描述，此处不再赘述。
以上对本发明实施例所提供的一种柔性显示面板与显示设备进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (12)

  1. 一种柔性显示面板，其中，所述柔性显示面板包括：
    非弯折区，所述非弯折区的形状为四角均为圆弧角的第一矩形；以及
    至少一个弯折区，所述弯折区配置于所述非弯折区的周围并与所述非弯折区连接，且所述至少一个弯折区的形状为第二矩形，所述第二矩形的一侧边与所述四角均为圆弧角的第一矩形的一直线边相连，其中与所述非弯折区连接的所述至少一个弯折区的直线边对应的相邻两圆弧角中至少一者具有内凹的波浪形状。
  2. 如权利要求1所述的柔性显示面板，其中，所述内凹的波浪形状的弯曲方向朝向所述非弯折区的内部。
  3. 如权利要求1所述的柔性显示面板，其中，所述至少一个弯折区与所述非弯折区相连的一侧边的长度大于与其相邻且垂直的两侧边的长度。
  4. 如权利要求1所述的柔性显示面板，其中，所述内凹的波浪形状具有多个波峰和多个波谷。
  5. 如权利要求4所述的柔性显示面板，其中，所述内凹的波浪形状的多个波峰和多个波谷之间具有多种间距。
  6. 如权利要求1所述的柔性显示面板，其中，所述柔性显示面板包括四个弯折区，分别与所述非弯折区的四角均为圆弧角的第一矩形的四个直线边相连，且所述非弯折区的四角中至少一者具有内凹的波浪形状，其中，所述内凹的波浪形状的弯曲方向朝向所述非弯折区的内部。
  7. 如权利要求6所述的柔性显示面板，其中，所述非弯折区的四角均具有内凹的波浪形状。
  8. 如权利要求6所述的柔性显示面板，其中，所述非弯折区的四角的内凹的波浪形状彼此相同或相异。
  9. 如权利要求1所述的柔性显示面板，其中，在所述柔性显示面板的边缘区域，所述柔性显示面板还包括若干条金属走线，至少一条所述金属走线沿边缘区域的所述内凹的波浪形状适应性地配置。
  10. 如权利要求9所述的柔性显示面板，其中，至少一条所述金属走线沿边缘区域的所述内凹的波浪形状适应性地配置，剩余的所述金属走线在所述边缘区域的内凹的波浪形状处宽度减小。
  11. 如权利要求9所述的柔性显示面板，其中，所述柔性显示面板包括：
    基板；
    阵列层，配置与所述基板上；
    OLED器件层，配置与所述阵列层上；以及
    薄膜封装层，配置与所述OLED器件层上，
    其中，所述阵列层中包括所述的若干条金属走线，所述若干条金属走线包括复位信号线与阴极电位线。
  12. 一种显示设备，其中，所述显示设备包括如权利要求1所述的柔性显示面板。
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