WO2020155395A1 - 柔性显示面板、显示模组 - Google Patents

柔性显示面板、显示模组 Download PDF

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Publication number
WO2020155395A1
WO2020155395A1 PCT/CN2019/082368 CN2019082368W WO2020155395A1 WO 2020155395 A1 WO2020155395 A1 WO 2020155395A1 CN 2019082368 W CN2019082368 W CN 2019082368W WO 2020155395 A1 WO2020155395 A1 WO 2020155395A1
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WO
WIPO (PCT)
Prior art keywords
section
stress relief
bending section
relief member
curvature
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/082368
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English (en)
French (fr)
Inventor
方亮
丁玎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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.)
Filing date
Publication date
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 US16/493,471 priority Critical patent/US11196013B2/en
Publication of WO2020155395A1 publication Critical patent/WO2020155395A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/179—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
    • 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
    • H10K50/844—Encapsulations
    • 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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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
    • 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
    • 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
    • H10K2102/351—Thickness
    • 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
    • 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, in particular to a flexible display panel and a display module.
  • the lower frame of the existing mobile phone display panel generally uses COF (Chip on FPC) or COP (Chip The process of on Pi) sets the position of the driver chip, which makes the lower frame spacing of the display panel smaller, but the process is more difficult and the cost is higher.
  • the bending area of the display panel includes a metal wire for signal transmission, and when the bending rate of the panel reaches a certain value, the metal wire is prone to cracks or even breaks, which makes the display panel unable to perform signal transmission.
  • the present application provides a flexible display panel and a display module to solve the technical problem that the metal wiring in the bending area of the existing display panel is easily broken.
  • the present application provides a display panel, including the flexible display panel including a display area and a non-display area located at the periphery of the display area, and the non-display area includes a curved area;
  • At least one wire is arranged in the bending area, and each wire includes at least one stress relief member.
  • the wire further includes a connecting portion, and at least one stress relief member is provided between two adjacent connecting portions.
  • the stress relief member is a hemispherical protrusion
  • the connecting portion is a semi-cylindrical body.
  • the thickness of the stress relief member is greater than the thickness of the connecting portion.
  • the line shape of the wire is one or a combination of wavy lines, zigzag lines, or straight lines.
  • the bending area includes a first bending section, a second bending section, and a third bending section.
  • the first bending section is close to the display area, and the third bending section is far away from the display area.
  • the second curved section is located between the first curved section and the third curved section;
  • the distribution density of the stress relief member is different in the first bending section, the second bending section, and the third bending section.
  • the radius of curvature of the second curved section is smaller than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is smaller than the radius of curvature of the third curved section;
  • the density of the stress relief member in the second bending section is greater than the density of the stress relief member in the first bending section, and the density of the stress relief member in the second bending section is greater than that of the third bending section The density of the stress relief member in the segment.
  • the radius of curvature of the second curved section is smaller than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is smaller than the radius of curvature of the third curved section;
  • the thickness of the stress relief member gradually increases
  • the thickness of the stress relief member gradually decreases.
  • the radius of curvature of the second curved section is greater than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is greater than the radius of curvature of the third curved section;
  • the density of the stress relief member in the second bending section is less than the density of the stress relief member in the first bending section, and the density of the stress relief member in the second bending section is less than that of the third bending section The density of the stress relief member in the segment.
  • the radius of curvature of the second curved section is greater than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is greater than the radius of curvature of the third curved section;
  • the thickness of the stress relief member gradually decreases
  • the thickness of the stress relief member gradually increases.
  • the present application also proposes a display module.
  • the display module includes a flexible display panel and a polarizing layer and a cover layer on the flexible display panel, wherein the flexible display panel includes a display area and a display area located in the display area.
  • At least one wire is arranged in the bending area, and each wire includes at least one stress relief member.
  • the wire further includes a connecting portion, and at least one stress relief member is provided between two adjacent connecting portions.
  • the stress relief member is a hemispherical protrusion
  • the connecting portion is a semi-cylinder
  • the thickness of the stress relief member is greater than the thickness of the connecting portion.
  • the line shape of the wire is one or a combination of wavy lines, zigzag lines, or straight lines.
  • the bending area includes a first bending section, a second bending section, and a third bending section.
  • the first bending section is close to the display area, and the third bending section is far away from the display area.
  • the second curved section is located between the first curved section and the third curved section;
  • the distribution density of the stress relief member is different in the first bending section, the second bending section, and the third bending section.
  • the radius of curvature of the second curved section is smaller than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is smaller than the radius of curvature of the third curved section;
  • the density of the stress relief member in the second bending section is greater than the density of the stress relief member in the first bending section, and the density of the stress relief member in the second bending section is greater than that of the third bending section The density of the stress relief member in the segment.
  • the radius of curvature of the second curved section is smaller than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is smaller than the radius of curvature of the third curved section;
  • the thickness of the stress relief member gradually increases
  • the thickness of the stress relief member gradually decreases.
  • the radius of curvature of the second curved section is greater than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is greater than the radius of curvature of the third curved section;
  • the density of the stress relief member in the second bending section is less than the density of the stress relief member in the first bending section, and the density of the stress relief member in the second bending section is less than that of the third bending section The density of the stress relief member in the segment.
  • the radius of curvature of the second curved section is greater than the radius of curvature of the first curved section, and the radius of curvature of the second curved section is greater than the radius of curvature of the third curved section;
  • the thickness of the stress relief member gradually decreases
  • the thickness of the stress relief member gradually increases.
  • the stress concentration of the metal trace in the bending area is relieved, the bending resistance performance of the bending area is improved, the abnormality of disconnection is reduced, and the quality of the product is improved.
  • Figure 1 is a structural diagram of a flexible display panel of this application.
  • Figure 2 is a plan view of the bending area of the flexible display panel of the application.
  • FIG. 3 is a top view of a wire in the bending area of the flexible display panel of this application.
  • FIG. 4 is a first cross-sectional view of the flexible display panel in FIG. 2 along section A-A;
  • FIG. 5 is a second cross-sectional view of the flexible display panel in FIG. 2 along section A-A;
  • FIG. 6 is a third cross-sectional view of the flexible display panel in FIG. 2 along section A-A;
  • FIG. 7 is a fourth cross-sectional view of the flexible display panel in FIG. 2 along section A-A;
  • FIG. 8 is a fifth cross-sectional view of the flexible display panel in FIG. 2 along section A-A.
  • FIG. 1 is a structural diagram of a flexible display panel of the application.
  • FIG. 2 is an expanded plan view of the bending area of the flexible display panel of the application.
  • the flexible display panel 100 includes a substrate 10 and a light emitting device layer 20 and an encapsulation layer 30 on the substrate 10.
  • the substrate 10 is a flexible substrate, and the material of the flexible substrate may be polyimide (PI).
  • PI polyimide
  • the flexible display panel 100 includes a display area 200 and a non-display area 300 located at the periphery of the display area 200.
  • the non-display area 300 includes a bending area 40 close to the display area 200 and a binding area 50 far away from the display area 200, and the bending area 40 is located between the display area 200 and the binding area 50.
  • a plurality of wires 60 are arranged in the bending area 40, and the wires 60 extend from the display area 200 to the binding area 50 through the bending area 40.
  • the flexible display panel 100 bends the driving chip and part of the signal wiring to the back of the display area 200 through the bending area 40 to reduce the lower frame of the flexible display panel 100, as shown in the spacing L in FIG. 1 .
  • the wires 60 and the source and drain of the flexible display panel 100 are formed in the same photomask process.
  • the line shape of the wire 60 is one or a combination of wavy lines, zigzag lines or straight lines.
  • the wire 60 is taken as a straight line for description.
  • FIG. 3 is a top view of a wire in the bending area of the flexible display panel of the present application.
  • Each wire 60 includes at least one stress relief member 601.
  • the wire 60 also includes a connecting portion 602. At least one stress relief member 601 is arranged between two adjacent connecting portions 602. In an embodiment, one, two or more than two stress relief members 601 may be provided between two adjacent connecting portions 602, and the specific number is not limited.
  • FIG. 4 is a first cross-sectional view of the flexible display panel of the present application in FIG. 2 along section A-A.
  • the stress relief member 601 is located on the substrate 10.
  • the stress relief member 601 may be, but is not limited to, a hemispherical protrusion.
  • the connecting portion 602 can be, but is not limited to, a semi-cylinder.
  • the thickness of the stress relief member 601 is greater than the thickness of the connecting portion 602.
  • the bending area 40 includes a first bending section 401, a second bending section 402 and a third bending section 403.
  • the first curved section 401 is close to the display area 200
  • the third curved section 403 is far away from the display area 200
  • the second curved section 402 is located between the first curved section 401 and the third curved section 403 between.
  • the distribution density of the stress relief member 601 in the first curved section 401, the second curved section 402, and the third curved section 403 are different.
  • the radius of curvature of the second curved section 402 is smaller than the radius of curvature of the first curved section 401, and the radius of curvature of the second curved section 402 is smaller than the radius of curvature of the third curved section 403.
  • the bending stress received by the second bending section 402 is the largest, and the second bending section 402 is the most easily broken area of the flexible substrate.
  • the bending stress of the second bending section 402 is greater than the bending stress of the first bending section 401, and the bending stress of the second bending section 402 is greater than the bending stress of the third bending section 403.
  • FIG. 5 is a second cross-sectional view of the flexible display panel of the present application in FIG. 2 along section A-A.
  • the density of the stress relief member 601 in the second bending section 402 is greater than the density of the stress relief member 601 in the first bending section 401, and the density of the stress relief member 601 in the second bending section 402 It is greater than the density of the stress relief member 601 in the third curved section 403.
  • this embodiment may also be:
  • the density of the stress relief member 601 gradually increases. In the direction from the second curved section 402 to the third curved section 403, the density of the stress relief member 601 gradually decreases.
  • the stress relief member 601 corresponding to the area with greater bending stress is denser, and the stress relief member 601 corresponding to the area with lower bending stress is sparser, which reduces the bending stress in each area, avoids stress concentration, and improves The bending performance of the flexible substrate.
  • FIG. 6 is a third cross-sectional view of the flexible display panel of the present application in FIG. 2 along section A-A.
  • the thickness of the stress relief member 601 of the second bending section 402 is greater than the thickness of the stress relief member 601 of the first bending section 401, and the thickness of the stress relief member 601 of the second bending section 402 The thickness of the stress relief member 601 is greater than the third curved section 403.
  • this embodiment may also be:
  • the thickness of the stress relief member 601 gradually increases. In the direction from the second curved section 402 to the third curved section 403, the thickness of the stress relief member 601 gradually decreases.
  • the area with larger bending stress corresponds to the greater thickness of the stress relief member 601, and the area with smaller bending stress corresponds to the smaller thickness of the stress relief member 601, ensuring that the neutral axis of the bending zone 40 is one.
  • the smooth transition of the arc avoids stress concentration in some areas and improves the bending resistance of the bending zone 40.
  • the bending area 40 is bent into a circular arc during bending, and the arc at both ends is smaller than the arc in the middle of the bending area 40.
  • the radius of curvature of the second curved section 402 is greater than the radius of curvature of the first curved section 401, and the radius of curvature of the second curved section 402 is greater than that of the third curved section. 403 radius of curvature.
  • the first bending section 401 and the third bending section 403 receive the greatest bending stress, and the first bending section 401 and the third bending section 403 are the most vulnerable to fracture of the flexible substrate. Area.
  • the bending stress of the second bending section 402 is smaller than the bending stress of the first bending section 401, and the bending stress of the second bending section 402 is smaller than the bending stress of the third bending section 403.
  • FIG. 7 is a fourth cross-sectional view of the flexible display panel of the present application in FIG. 2 along section A-A.
  • the density of the stress relief member 601 in the second bending section 402 is less than the density of the stress relief member 601 in the first bending section 401, and the density of the stress relief member 601 in the second bending section 402 It is smaller than the density of the stress relief member 601 in the third curved section 403.
  • this embodiment may also be:
  • the density of the stress relief member 601 gradually decreases. In the direction from the second curved section 402 to the third curved section 403, the density of the stress relief member 601 gradually increases.
  • the stress relief member 601 corresponding to the area with greater bending stress is denser, and the stress relief member 601 corresponding to the area with lower bending stress is sparser, which reduces the bending stress in each area, avoids stress concentration, and improves The bending performance of the flexible substrate.
  • FIG. 8 is a fifth cross-sectional view of the flexible display panel of the second embodiment of the present application in FIG. 2 along section A-A.
  • the thickness of the stress relief member 601 of the second bending section 402 is smaller than the thickness of the stress relief member 601 of the first bending section 401, and the thickness of the stress relief member 601 of the second bending section 402 The thickness of the stress relief member 601 is smaller than the third bending section 403.
  • this embodiment may also be:
  • the thickness of the stress relief member 601 gradually decreases. In the direction from the second curved section 402 to the third curved section 403, the thickness of the stress relief member 601 gradually increases.
  • the area with larger bending stress corresponds to the greater thickness of the stress relief member 601, and the area with smaller bending stress corresponds to the smaller thickness of the stress relief member 601, ensuring that the neutral axis of the bending zone 40 is one.
  • the smooth transition of the arc avoids stress concentration in some areas and improves the bending resistance of the bending zone 40.
  • the setting of the bending zone in the present application can also be:
  • the stress relief member 601 is further provided on the wire 60 close to the first bending section 401 and the third bending section 403. Providing the stress relief member 601 on the wire 60 that has not undergone deformation can better improve the bending resistance of the flexible substrate.
  • the application also proposes a display module, which includes the above-mentioned flexible display panel, and a polarizing layer and a cover layer on the above-mentioned flexible display panel.
  • the working principle of the display module can be referred to the above-mentioned flexible display, and details are not repeated here.
  • the present application proposes a flexible display panel and a display module.
  • the flexible display panel includes a display area and a non-display area located at the periphery of the display area.
  • the non-display area includes a bending area; the bending area is provided with At least one wire, and each wire includes at least one stress relief member.
  • a stress release member on the wire, the stress concentration of the metal trace in the bending area is relieved, the bending resistance performance of the bending area is improved, the abnormality of disconnection is reduced, and the quality of the product is improved.

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

Abstract

一种柔性显示面板（100），包括弯曲区（40），弯曲区（40）内设置有至少一条导线（60），每一条导线（60）包括至少一应力释放构件（601）。还提供一种显示模组。

Description

柔性显示面板、显示模组 技术领域
本申请涉及显示领域，特别涉及一种柔性显示面板、显示模组。
 背景技术
随着显示行业技术的发展，用户对显示面板的外观设计要求越来越高，比如窄边框的设计。
现有手机显示面板的下边框一般采用COF（Chip on FPC）或COP（Chip on Pi）的工艺设置驱动芯片的位置，使得显示面板的下边框间距更小，但工艺难度较大，成本较高。显示面板的弯曲区中包括用于信号传输的金属线，而当面板的弯曲率达到一定数值时，该金属线容易产生裂纹甚至断裂，导致显示面板无法进行信号传输。
因此，目前亟需一种柔性显示面板以解决上述问题。
 技术问题
本申请提供一种柔性显示面板、显示模组，以解决现有显示面板弯曲区金属走线易断线的技术问题。
 技术解决方案
本申请提供一种显示面板，其包括所述柔性显示面板包括显示区域和位于所述显示区域外围的非显示区域，所述非显示区域包括弯曲区；
所述弯曲区内设置有至少一条导线，每一条所述导线包括至少一应力释放构件。
在本申请的柔性显示面板中，所述导线还包括连接部，相邻两所述连接部之间设置有至少一个所述应力释放构件。
在本申请的柔性显示面板中，所述应力释放构件为半球状凸起，所述连接部为半圆柱体。
在本申请的柔性显示面板中，所述应力释放构件的厚度大于所述连接部的厚度。
在本申请的柔性显示面板中，在所述柔性显示面板俯视图的方向上，所述导线的线形为波浪线、波折线或直线中一种或一种以上的组合。
在本申请的柔性显示面板中，所述弯曲区包括第一弯曲段、第二弯曲段以及第三弯曲段，所述第一弯曲段靠近所述显示区域，所述第三弯曲段远离所述显示区域，所述第二弯曲段位于所述第一弯曲段与所述第三弯曲段之间；
所述应力释放构件在所述第一弯曲段、所述第二弯曲段以及所述第三弯曲段的分布密度不同。
在本申请的柔性显示面板中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
所述第二弯曲段内所述应力释放构件的密度大于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度大于所述第三弯曲段内所述应力释放构件的密度。
在本申请的柔性显示面板中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐增加；
在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐减小。
在本申请的柔性显示面板中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所第三弯曲段的曲率半径；
所述第二弯曲段内所述应力释放构件的密度小于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度小于所述第三弯曲段内所述应力释放构件的密度。
在本申请的柔性显示面板中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所述第三弯曲段的曲率半径；
在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐减小；
在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐增加。
本申请还提出一种显示模组，所述显示模组包括柔性显示面板及位于上述柔性显示面板上的偏光层和盖板层，其中，所述柔性显示面板包括显示区域和位于所述显示区域外围的非显示区域，所述非显示区域包括弯曲区；
所述弯曲区内设置有至少一条导线，每一条所述导线包括至少一应力释放构件。
在本申请的显示模组中，所述导线还包括连接部，相邻两所述连接部之间设置有至少一个所述应力释放构件。
在本申请的显示模组中，所述应力释放构件为半球状凸起，所述连接部为半圆柱体。
在本申请的显示模组中，所述应力释放构件的厚度大于所述连接部的厚度。
在本申请的显示模组中，在所述柔性显示面板俯视图的方向上，所述导线的线形为波浪线、波折线或直线中一种或一种以上的组合。
在本申请的显示模组中，所述弯曲区包括第一弯曲段、第二弯曲段以及第三弯曲段，所述第一弯曲段靠近所述显示区域，所述第三弯曲段远离所述显示区域，所述第二弯曲段位于所述第一弯曲段与所述第三弯曲段之间；
所述应力释放构件在所述第一弯曲段、所述第二弯曲段以及所述第三弯曲段的分布密度不同。
在本申请的显示模组中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
所述第二弯曲段内所述应力释放构件的密度大于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度大于所述第三弯曲段内所述应力释放构件的密度。
在本申请的显示模组中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐增加；
在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐减小。
在本申请的显示模组中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所第三弯曲段的曲率半径；
所述第二弯曲段内所述应力释放构件的密度小于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度小于所述第三弯曲段内所述应力释放构件的密度。
在本申请的显示模组中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所述第三弯曲段的曲率半径；
在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐减小；
在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐增加。
 有益效果
本申请通过在导线上设置应力释放构件，缓解了弯曲区金属走线的应力集中，提高了弯曲区抗弯折性能，降低了断线异常，提升了产品的品质。
 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发明的一些实施例，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为本申请柔性显示面板的结构图；
图2为本申请柔性显示面板弯曲区的平面展开图；
图3为本申请柔性显示面板弯曲区中一条导线的俯视图；
图4为图2中柔性显示面板沿截面A-A的第一种剖面图；
图5为图2中柔性显示面板沿截面A-A的第二种剖面图；
图6为图2中柔性显示面板沿截面A-A的第三种剖面图；
图7为图2中柔性显示面板沿截面A-A的第四种剖面图；
图8为图2中柔性显示面板沿截面A-A的第五种剖面图。
 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，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，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申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
请参阅图1，图1为本申请柔性显示面板的结构图。
请参阅图2，图2为本申请柔性显示面板弯曲区的平面展开图。
所述柔性显示面板100包括基板10及位于所述基板10上的发光器件层20、封装层30。
在一种实施例中，所述基板10为柔性基板，所述柔性基板的材料可以为聚酰亚胺(PI)。
所述柔性显示面板100包括显示区域200和位于所述显示区域200外围的非显示区域300。所述非显示区域300包括靠近所述显示区域200的弯曲区40、及远离所述显示区域200的绑定区50，所述弯曲区40位于所述显示区域200与绑定区50之间。
所述弯曲区40内设置有多条导线60，所述导线60从所述显示区域200经过所述弯曲区40向绑定区50延伸。
所述柔性显示面板100通过所述弯曲区40将驱动芯片以及部分信号走线弯折至所述显示区域200的背面，减小所述柔性显示面板100的下边框，如图1中的间距L。
在一种实施例中，所述导线60与所述柔性显示面板100中源漏极在同一道光罩工艺中形成。
在所述柔性显示面板100俯视图的方向上，所述导线60的线形为波浪线、波折线或直线中一种或一种以上的组合。本实施例中以所述导线60为直线进行说明。
请参阅图3，图3为本申请柔性显示面板弯曲区中一条导线的俯视图。
每一条所述导线60包括至少一应力释放构件601。
所述导线60还包括连接部602。相邻两所述连接部602之间设置有至少一个所述应力释放构件601。在一种实施例中，相邻两所述连接部602之间可以设置有一个、两个或两个以上的所述应力释放构件601，具体数量不作限制。
请参阅图4，图4为图2中本申请柔性显示面板沿截面A-A的第一种剖面图。
所述应力释放构件601位于衬底10上。所述应力释放构件601可以为但不限定于半球状凸起。所述连接部602可以为但不限定于半圆柱体。
在一种实施例中，所述应力释放构件601的厚度大于所述连接部602的厚度。
请参阅图1和图2，所述弯曲区40包括第一弯曲段401、第二弯曲段402以及第三弯曲段403。所述第一弯曲段401靠近所述显示区域200，所述第三弯曲段403远离所述显示区域200，所述第二弯曲段402位于所述第一弯曲段401与所述第三弯曲段403之间。
在一种实施例中，所述应力释放构件601在所述第一弯曲段401、所述第二弯曲段402以及所述第三弯曲段403的分布密度不同。
请参阅图1，所述第二弯曲段402的曲率半径小于所述第一弯曲段401的曲率半径，所述第二弯曲段402的曲率半径小于所述第三弯曲段403的曲率半径。
从力学分析中可知，所述第二弯曲段402所受到的弯曲应力是最大，所述第二弯曲段402为所述柔性基板最易断裂的区域。所述第二弯曲段402的弯曲应力大于所述第一弯曲段401的弯曲应力，所述第二弯曲段402的弯曲应力大于所述第三弯曲段403的弯曲应力。
请参阅图5，图5为图2中本申请柔性显示面板沿截面A-A的第二种剖面图。
所述第二弯曲段402内所述应力释放构件601的密度大于所述第一弯曲段401内所述应力释放构件601的密度，所述第二弯曲段402内所述应力释放构件601的密度大于所述第三弯曲段403内所述应力释放构件601的密度。
在图5的基础上，本实施例还可以为：
在所述第一弯曲段401至所述第二弯曲段402的方向上，所述应力释放构件601的密度逐渐增加。在所述第二弯曲段402至所述第三弯曲段403的方向上，所述应力释放构件601的密度逐渐减小。
弯曲应力较大的区域对应的所述应力释放构件601较密集，弯曲应力较小的区域对应的所述应力释放构件601较稀疏，减小了各区域的弯曲应力，避免了应力集中，提高了所述柔性基板的弯折性能。
请参阅图6，图6为图2中本申请柔性显示面板沿截面A-A的第三种剖面图。
所述第二弯曲段402的所述应力释放构件601的厚度大于所述第一弯曲段401的所述应力释放构件601的厚度，所述第二弯曲段402的所述应力释放构件601的厚度大于所述第三弯曲段403的所述应力释放构件601的厚度。
在图6的基础上，本实施例还可以为：
在所述第一弯曲段401至所述第二弯曲段402的方向上，所述应力释放构件601的厚度逐渐增加。在所述第二弯曲段402至所述第三弯曲段403的方向上，所述应力释放构件601的厚度逐渐减小。
弯曲应力较大的区域对应的所述应力释放构件601的厚度较大，弯曲应力较小的区域对应的所述应力释放构件601的厚度较小，保证所述弯曲区40的中性轴为一平滑过渡的弧线，避免了部分区域应力集中，提高了所述弯曲区40的抗弯折性能。
为了获得更窄的边框，在弯折时所述弯曲区40被弯折成一段圆弧，在两端的弧度会小于所述弯曲区40中部的弧度。
在一种实施例中，请参阅图1，所述第二弯曲段402的曲率半径大于所述第一弯曲段401的曲率半径，所述第二弯曲段402的曲率半径大于所第三弯曲段403的曲率半径。
从力学分析中可知，所述第一弯曲段401及所述第三弯曲段403受到的弯曲应力最大，所述第一弯曲段401及所述第三弯曲段403为所述柔性基板最易断裂的区域。所述第二弯曲段402的弯曲应力小于所述第一弯曲段401的弯曲应力，所述第二弯曲段402的弯曲应力小于所述第三弯曲段403的弯曲应力。
请参阅图7，图7为图2中本申请柔性显示面板沿截面A-A的第四种剖面图。
所述第二弯曲段402内所述应力释放构件601的密度小于所述第一弯曲段401内所述应力释放构件601的密度，所述第二弯曲段402内所述应力释放构件601的密度小于所述第三弯曲段403内所述应力释放构件601的密度。
在图7的基础上，本实施例还可以为：
在所述第一弯曲段401至所述第二弯曲段402的方向上，所述应力释放构件601的密度逐渐减小。在所述第二弯曲段402至所述第三弯曲段403的方向上，所述应力释放构件601的密度逐渐增加。
弯曲应力较大的区域对应的所述应力释放构件601较密集，弯曲应力较小的区域对应的所述应力释放构件601较稀疏，减小了各区域的弯曲应力，避免了应力集中，提高了所述柔性基板的弯折性能。
请参阅图8，图8为图2中本申请实施例二柔性显示面板沿截面A-A的第五种剖面图。
所述第二弯曲段402的所述应力释放构件601的厚度小于所述第一弯曲段401的所述应力释放构件601的厚度，所述第二弯曲段402的所述应力释放构件601的厚度小于所述第三弯曲段403的所述应力释放构件601的厚度。
在图8的基础上，本实施例还可以为：
在所述第一弯曲段401至所述第二弯曲段402的方向上，所述应力释放构件601的厚度逐渐减小。在所述第二弯曲段402至所述第三弯曲段403的方向上，所述应力释放构件601的厚度逐渐增加。
弯曲应力较大的区域对应的所述应力释放构件601的厚度较大，弯曲应力较小的区域对应的所述应力释放构件601的厚度较小，保证所述弯曲区40的中性轴为一平滑过渡的弧线，避免了部分区域应力集中，提高了所述弯曲区40的抗弯折性能。
在上述图5至图8中，本申请的弯曲区的设置还可以为：
靠近所述第一弯曲段401及所述第三弯曲段403的所述导线60上还设置有所述应力释放构件601。在未发生形变的所述导线60上设置所述应力释放构件601，更好的提升了所述柔性基板的抗弯折性能。
本申请还提出了一种显示模组，所述显示模组包括上述柔性显示面板及位于上述柔性显示面板上的偏光层和盖板层。所述显示模组的工作原理可以参照上述柔性显示，具体不再赘述。
本申请提出了一种柔性显示面板、显示模组，所述柔性显示面板包括显示区域和位于所述显示区域外围的非显示区域，所述非显示区域包括弯曲区；所述弯曲区内设置有至少一条导线，每一条所述导线包括至少一应力释放构件。本申请通过在导线上设置应力释放构件，缓解了弯曲区金属走线的应力集中，提高了弯曲区抗弯折性能，降低了断线异常，提升了产品的品质。
综上所述，虽然本申请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申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种柔性显示面板，其中，所述柔性显示面板包括显示区域和位于所述显示区域外围的非显示区域，所述非显示区域包括弯曲区；
    所述弯曲区内设置有至少一条导线，每一条所述导线包括至少一应力释放构件。
  2. 根据权利要求1所述的柔性显示面板，其中，所述导线还包括连接部，相邻两所述连接部之间设置有至少一个所述应力释放构件。
  3. 根据权利要求2所述的柔性显示面板，其中，所述应力释放构件为半球状凸起，所述连接部为半圆柱体。
  4. 根据权利要求3所述的柔性显示面板，其中，所述应力释放构件的厚度大于所述连接部的厚度。
  5. 根据权利要求1所述的柔性显示面板，其中，在所述柔性显示面板俯视图的方向上，所述导线的线形为波浪线、波折线或直线中一种或一种以上的组合。
  6. 根据权利要求1所述的柔性显示面板，其中，所述弯曲区包括第一弯曲段、第二弯曲段以及第三弯曲段，所述第一弯曲段靠近所述显示区域，所述第三弯曲段远离所述显示区域，所述第二弯曲段位于所述第一弯曲段与所述第三弯曲段之间；
    所述应力释放构件在所述第一弯曲段、所述第二弯曲段以及所述第三弯曲段的分布密度不同。
  7. 根据权利要求6所述的柔性显示面板，其中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
    所述第二弯曲段内所述应力释放构件的密度大于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度大于所述第三弯曲段内所述应力释放构件的密度。
  8. 根据权利要求6所述的柔性显示面板，其中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
    在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐增加；
    在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐减小。
  9. 根据权利要求6所述的柔性显示面板，其中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所第三弯曲段的曲率半径；
    所述第二弯曲段内所述应力释放构件的密度小于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度小于所述第三弯曲段内所述应力释放构件的密度。
  10. 根据权利要求6所述的柔性显示面板，其中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所述第三弯曲段的曲率半径；
    在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐减小；
    在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐增加。
  11. 一种显示模组，所述显示模组包括柔性显示面板及位于上述柔性显示面板上的偏光层和盖板层，其中，所述柔性显示面板包括显示区域和位于所述显示区域外围的非显示区域，所述非显示区域包括弯曲区；
    所述弯曲区内设置有至少一条导线，每一条所述导线包括至少一应力释放构件。
  12. 根据权利要求11所述的显示模组，其中，所述导线还包括连接部，相邻两所述连接部之间设置有至少一个所述应力释放构件。
  13. 根据权利要求12所述的显示模组，其中，所述应力释放构件为半球状凸起，所述连接部为半圆柱体。
  14. 根据权利要求13所述的显示模组，其中，所述应力释放构件的厚度大于所述连接部的厚度。
  15. 根据权利要求11所述的显示模组，其中，在所述柔性显示面板俯视图的方向上，所述导线的线形为波浪线、波折线或直线中一种或一种以上的组合。
  16. 根据权利要求11所述的显示模组，其中，所述弯曲区包括第一弯曲段、第二弯曲段以及第三弯曲段，所述第一弯曲段靠近所述显示区域，所述第三弯曲段远离所述显示区域，所述第二弯曲段位于所述第一弯曲段与所述第三弯曲段之间；
    所述应力释放构件在所述第一弯曲段、所述第二弯曲段以及所述第三弯曲段的分布密度不同。
  17. 根据权利要求16所述的显示模组，其中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
    所述第二弯曲段内所述应力释放构件的密度大于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度大于所述第三弯曲段内所述应力释放构件的密度。
  18. 根据权利要求16所述的显示模组，其中，所述第二弯曲段的曲率半径小于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径小于所述第三弯曲段的曲率半径；
    在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐增加；
    在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐减小。
  19. 根据权利要求16所述的显示模组，其中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所第三弯曲段的曲率半径；
    所述第二弯曲段内所述应力释放构件的密度小于所述第一弯曲段内所述应力释放构件的密度，所述第二弯曲段内所述应力释放构件的密度小于所述第三弯曲段内所述应力释放构件的密度。
  20. 根据权利要求16所述的显示模组，其中，所述第二弯曲段的曲率半径大于所述第一弯曲段的曲率半径，所述第二弯曲段的曲率半径大于所述第三弯曲段的曲率半径；
    在所述第一弯曲段至所述第二弯曲段的方向上，所述应力释放构件的厚度逐渐减小；
    在所述第二弯曲段至所述第三弯曲段的方向上，所述应力释放构件的厚度逐渐增加。
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