WO2019041950A1 - 柔性显示基板及显示装置 - Google Patents

柔性显示基板及显示装置 Download PDF

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Publication number
WO2019041950A1
WO2019041950A1 PCT/CN2018/090260 CN2018090260W WO2019041950A1 WO 2019041950 A1 WO2019041950 A1 WO 2019041950A1 CN 2018090260 W CN2018090260 W CN 2018090260W WO 2019041950 A1 WO2019041950 A1 WO 2019041950A1
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WO
WIPO (PCT)
Prior art keywords
conductive layer
flexible display
display substrate
bending region
bending
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Application number
PCT/CN2018/090260
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English (en)
French (fr)
Inventor
袁波
黄秀颀
胡坤
黄根茂
徐琳
王鑫楠
Original Assignee
昆山国显光电有限公司
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Application filed by 昆山国显光电有限公司 filed Critical 昆山国显光电有限公司
Publication of WO2019041950A1 publication Critical patent/WO2019041950A1/zh
Priority to US16/535,504 priority Critical patent/US10855825B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/38—Displays
    • 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
    • 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 invention relates to the field of display technologies, and in particular, to a flexible display substrate and a display device.
  • AMOLED Active-matrix organic light emitting diode
  • the class display device can achieve an expanded state (large screen) when it is needed, and a folded state (small screen) when it is required to be stored.
  • FIG. 1 is a schematic structural view of a flexible display substrate in the prior art.
  • the flexible display substrate of the prior art includes a metal layer 1, an insulating layer 2, and a flexible substrate 3 which are sequentially placed in a top-down direction (from top to bottom as shown in FIG. 1).
  • the flexible display substrate of the prior art includes the non-bending area N1 and the constituent parts of the bending area N2 (ie, the metal layer 1, the insulating layer 2, and the flexible substrate 3) having the same thickness.
  • the current of the flexible display substrate becomes large (compared with the original flexible display substrate under the same conditions of brightness, transmittance, and the like).
  • the resistance of the metal layer 1 ie, the conductive layer, which conducts electricity
  • the metal layer 1 is composed of a plurality of metal wires
  • the electric resistance of the metal layer 1 can be lowered by increasing the thickness or width of the metal wires in the metal layer 1, but this manner increases the metal wires in the metal layer 1.
  • the thickness or width while the increase in the width of the metal line in the metal layer 1 affects the resolution of the flexible display substrate, and the increase in the thickness of the metal line in the metal layer 1 affects the bending performance of the flexible display substrate.
  • the embodiments of the present application provide a flexible display substrate and a display device to solve the problem that the increase in the thickness of the conductive layer of the flexible display substrate in the prior art reduces the bending performance of the flexible display substrate.
  • an embodiment of the present application provides a flexible display substrate, including a flexible substrate and a conductive layer on the flexible substrate.
  • the conductive layer and the flexible substrate are divided into a bending region and a non-bending region along the extending direction, and the bending is performed.
  • the thickness of the conductive layer of the region is smaller than the thickness of the conductive layer of the non-bending region.
  • the upper or lower edge of the non-stretching direction of the conductive layer of the bending zone is collinear with the same side edge of the conductive layer of the non-bending zone.
  • the upper and lower edges of the non-stretching direction of the conductive layer of the bending zone are not collinear with the same side edge of the conductive layer of the non-bending zone.
  • the upper edge and/or the lower edge of the non-stretching direction of the conductive layer of the bending zone is a zigzag edge.
  • the upper edge and/or the lower edge of the non-stretching direction of the conductive layer of the bending zone is a curved edge.
  • the upper and/or lower edges of the non-stretching direction of the conductive layer of the bending zone are wavy edges.
  • the thickness of the bending zone is from 200 nm to 400 nm.
  • the thickness of the non-bending zone is from 250 nm to 600 nm.
  • the conductive layer of the bending zone includes a hole.
  • the conductive layer of the bending zone includes an organic layer, and the conductive layer covers the organic layer.
  • an embodiment of the present application further provides a display device, including the flexible display substrate described in any of the above embodiments.
  • the flexible display substrate provided by the embodiment of the present application divides the flexible display substrate into a bending region and a non-bending region along the extending direction, and sets the thickness of the conductive layer of the bending region to be smaller than the thickness of the conductive layer of the non-bending region.
  • the purpose of reducing the resistance value of the conductive layer of the flexible display substrate without affecting the bending property of the bending region of the flexible display substrate is achieved, and a necessary condition is provided for applying the flexible display substrate to the large-screen foldable display device.
  • FIG. 1 is a schematic structural view of a flexible display substrate in the prior art.
  • FIG. 2 is a schematic structural diagram of a flexible display substrate according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a flexible display substrate according to another embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a flexible display substrate according to another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a flexible display substrate according to still another embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a flexible display substrate according to an embodiment of the present application.
  • the flexible display substrate provided by the embodiment of the present application includes a conductive layer 4, an insulating layer 2, and a flexible substrate 3 which are sequentially arranged in a top-down direction (from top to bottom as shown in FIG. 2).
  • the conductive layer 4, the insulating layer 2 and the flexible substrate 3 which are stacked in the top-down direction are divided into a bending region N2 and a non-bending region N1 in the extending direction, and the thickness of the conductive layer 4 of the bending region N2 is smaller than The thickness of the conductive layer 4 of the bending zone N1, that is, the lower edge of the conductive layer 4 of the bending zone N2 (the lower edge as shown in FIG. 2) and the lower edge of the conductive layer 4 of the non-bending zone N1 (FIG. 2)
  • the lower edge shown is on the same horizontal line (ie, the collinear line), and the upper edge of the conductive layer 4 of the bending region N2 (the upper edge as shown in FIG. 2) is lower in the horizontal direction than the conductive layer of the non-bending region N1.
  • the upper edge of 4 (the upper edge shown in Figure 2).
  • extension direction mentioned in the embodiment of the present application refers to the horizontal direction, that is, the left-right direction shown in FIG. 2, and the non-extension direction refers to the vertical direction, that is, the up-and-down direction shown in FIG. 2.
  • the resistance of the conductive layer before the improvement is:
  • the current of the conductive layer before the improvement is:
  • S1 W*h1
  • W represents the width of the conductive layer
  • L represents the length of the conductive layer
  • h1 represents the thickness of the conductive layer
  • S1 represents the cross-sectional area of the conductive layer
  • ⁇ represents the density value of the conductive layer.
  • R1 represents the resistance of the conductive layer
  • I1 represents the current of the conductive layer
  • V represents the voltage value.
  • the improved conductive layer resistance is:
  • the improved conductive layer current is:
  • the conductive layer cross-sectional area, I1' represents the improved conductive layer current, and V represents the voltage value.
  • the flexible display substrate provided by the embodiment of the present application divides the flexible display substrate into a bending region and a non-bending region along the extending direction, and sets the thickness of the conductive layer of the bending region to be smaller than the thickness of the conductive layer of the non-bending region.
  • the purpose of reducing the resistance value of the conductive layer of the flexible display substrate and increasing the current value of the conductive layer without affecting the bending performance of the bending region of the flexible display substrate is to achieve the application of the flexible display substrate to the large-screen foldable display.
  • the device provides the necessary conditions.
  • the upper edge of the conductive layer 4 of the bending region N2 (the upper edge shown in FIG. 2) and the upper edge of the conductive layer 4 of the non-bending region N1 (eg, The upper edge shown in FIG. 2 is on the same horizontal line (ie, the collinear line), and the lower edge of the conductive layer 4 of the bending region N2 (the lower edge shown in FIG. 2) is higher in the horizontal direction than the non-bending area N1.
  • the lower edge of the conductive layer 4 (the lower edge as shown in FIG.
  • the thickness of the conductive layer 4 of the bending region N2 is smaller than the thickness of the conductive layer 4 of the non-bending region N1, so as to substantially increase the implementation of the present application.
  • the flexibility and scalability of the flexible display substrate provided by the examples.
  • the conductive layer 4 in the embodiment of the present application is provided as a metal layer, so that the conductive layer 4 can better exert a conductive effect.
  • the material of the conductive layer 4 may be made of a conductive plastic or a conductive rubber, which is not limited in this application.
  • FIG. 3 is a schematic structural diagram of a flexible display substrate according to another embodiment of the present application.
  • the embodiments of the present application are extended on the basis of the embodiments shown in FIG. 2 of the present application, and the differences will be described below, and the details are not described again.
  • the upper edge (the upper edge shown in FIG. 3) of the conductive layer 4 of the non-bending area N1 of the flexible display substrate provided by the embodiment of the present application is higher than the bend in the extending direction (ie, the horizontal direction).
  • the upper edge of the conductive layer 4 of the region N2 (the upper edge as shown in FIG. 3), and the lower edge of the conductive layer 4 of the non-bending region N1 (the lower edge as shown in FIG. 3) is in the extending direction (ie, the horizontal direction)
  • the lower edge of the conductive layer 4 (the lower edge as shown in FIG. 3) is lower than the bending region N2.
  • the flexible display substrate provided by the embodiment of the present application is configured to set the upper edge of the conductive layer of the non-bending area to be higher than the upper edge of the conductive layer in the extending direction (ie, the horizontal direction) and the non-bending area.
  • the lower edge of the layer is disposed in a manner that is shorter than the lower edge of the conductive layer of the bending region in the extending direction (ie, the horizontal direction), that is, the two ends of the non-extended direction (ie, the vertical direction) of the conductive layer of the non-bending region are respectively increased.
  • the manner of reducing the thickness of the conductive layer of the non-bending region better achieves the purpose of reducing the resistance value of the conductive layer of the flexible display substrate without affecting the bending property of the bending region of the flexible display substrate.
  • the upper edge and/or the lower edge of the conductive layer 4 of the non-bending area N1 and the upper edge and/or the lower edge of the conductive layer 4 of the corresponding bending area N2 may also be collinear. Ok, it is not mandatory to be a horizontal line.
  • FIG. 4 is a schematic structural diagram of a flexible display substrate according to another embodiment of the present application.
  • the embodiments of the present application are extended on the basis of the embodiments shown in FIG. 3 of the present application, and the differences will be described below, and the details are not described again.
  • the lower edge (the lower edge shown in FIG. 4) of the conductive layer 4 of the bending region N2 of the flexible display substrate provided by the embodiment of the present application is a zigzag edge.
  • the flexible display substrate provided by the embodiment of the present application improves the conductive layer of the bending region by setting the lower edge of the conductive layer of the bending region of the flexible display substrate (the lower edge as shown in FIG. 4) as a zigzag edge.
  • the upper edge (the upper edge shown in FIG. 4) of the conductive layer 4 of the bending region N2 of the flexible display substrate may be provided as a zigzag edge to improve the bending of the conductive layer 4 of the bending region N2. Performance, especially the bending performance of the downward bend (lower as shown in Figure 4).
  • FIG. 5 is a schematic structural diagram of a flexible display substrate according to still another embodiment of the present application.
  • the embodiments of the present application are extended on the basis of the embodiments shown in FIG. 4 of the present application, and the differences will be described below, and the details are not described again.
  • the upper edge and the lower edge of the non-extended direction (ie, the vertical direction) of the conductive layer 4 of the bending region N2 of the flexible display substrate provided by the embodiment of the present application (the upper edge and the lower edge as shown in FIG. 4)
  • the edges are all zigzag edges.
  • the flexible display substrate provided by the embodiment of the present application improves the manner in which the upper edge and the lower edge (the upper edge and the lower edge shown in FIG. 4) of the conductive layer of the bending region of the flexible display substrate are set as zigzag edges.
  • the bending properties of the conductive layer in the bending zone especially the bending performance in the non-extended direction, that is, the upward bending (upward as shown in FIG. 4) and the downward bending (lower as shown in FIG. 4) .
  • the upper edge and/or the lower edge of the conductive layer 4 of the bending region N2 of the flexible display substrate provided by the above embodiment may also be a curved edge and/or a wave edge, which is not limited to the above embodiment of the present application.
  • the zigzag edges provided are not described in detail herein.
  • the conductive layer 4 of the bending region N2 of the flexible display substrate includes holes to fully enhance the bending performance of the conductive layer 4 of the bending region N2, wherein the specific setting position and setting mode of the hole are
  • the application embodiment will not be described in detail, and any specific arrangement position and arrangement of the holes that can be easily conceived by those skilled in the art should be included in the embodiments of the present application.
  • the conductive layer 4 of the bend region N2 of the flexible display substrate includes an organic layer, and the conductive layer 4 covers the organic layer to realize the conductive function by using the conductive layer 4, and the bend of the conductive layer 4 is enhanced by the organic layer.
  • the purpose of folding performance is not limited to folding performance.
  • the conductive layer 4 is a metal layer, and the metal layer includes a plurality of metal lines, the metal line includes an organic layer and a reinforcing conductive layer, and the reinforcing conductive layer covers the organic layer, wherein the organic layer of the metal line and the enhancement
  • the specific coating manner of the conductive layer is not described in detail in the embodiments of the present application, and any specific coating manner of the organic layer and the conductive layer which can be easily conceived by those skilled in the art should be included in the embodiment of the present application.
  • the thickness of the bending zone N2 is 200 nm to 400 nm, and the thickness of the non-bending zone N1 is set according to actual conditions, and only needs to be larger than the thickness of the bending zone N2. Setting the thickness of the bending region N2 to 200 nm to 400 nm enables the flexible display substrate to have better bending performance while maintaining the resolution of the flexible display substrate.
  • the thickness of the non-bending area N1 is 250 nm to 600 nm, and the thickness of the bending area N2 is set according to actual conditions, and only needs to be smaller than the thickness of the non-bending area N1.
  • the thickness of the non-bending region N1 is from 250 nm to 600 nm, and the flexible display substrate can be provided with good bending performance while maintaining the conductive resistance of the flexible display substrate.
  • a display device comprising the flexible display substrate described in any of the above embodiments.
  • display devices include, but are not limited to, electronic devices such as mobile phones, tablets, notebook computers, and the like.

Abstract

本发明实施例提供一种柔性显示基板及显示装置，其中柔性显示基板包括柔性基板和位于柔性基板上的导电层，导电层和柔性基板沿延展方向被分为弯折区和非弯折区，弯折区的导电层的厚度小于非弯折区的导电层的厚度。本发明实施例提供的柔性显示基板通过将柔性显示基板沿延展方向划分成弯折区和非弯折区，并设置弯折区的导电层厚度小于非弯折区的导电层的厚度的方式，实现了既降低柔性显示基板的导电层的电阻值又不影响柔性显示基板的弯折区的弯折性能的目的，为将柔性显示基板应用到大屏可折叠的显示装置提供了必要条件。

Description

柔性显示基板及显示装置
本申请要求2017年08月31日提交的申请号为No.201721111099.8的中国申请的优先权，通过引用将其全部内容并入本文。
技术领域
本发明涉及显示技术领域，具体涉及一种柔性显示基板及显示装置。
发明背景
随着科技的不断进步和用户需求的不断提升，手机类显示装置显示屏逐步向高分辨率、窄边框、大屏幕的方向发展。而大屏幕的显示装置会导致携带不便等情况，尤其是手机。AMOLED(Active-matrix organic light emitting diode，即有源矩阵有机发光二极体)以其自身优势可以实现柔性显示，即可以实现诸如折叠、卷曲、扭曲等不同柔性形态的显示，以便安装AMOLED的手机类显示装置能够实现在需要使用时为展开状态(大屏)，在需要收纳时为折叠状态(小屏)的目的。
图1所示为现有技术中的柔性显示基板的结构示意图。如图1所示，现有技术中的柔性显示基板包括依次沿自上而下方向(如图1所示的自上而下方向)重叠放置的金属层1、绝缘层2和柔性基板3，其中，现有技术中的柔性显示基板包括的非弯折区N1和弯折区N2中的各组成部分(即金属层1、绝缘层2和柔性基板3)厚度完全一致。
但是，将现有柔性显示基板做大(满足展开时的大屏需求)之后会导致柔性显示基板电流变大(在亮度、透过率等其他条件相同的条件下与原柔性显示基板对比结果)的情况。为了解决现有柔性显示基板电流变大问题，可以通过降低柔性显示基板的金属层1(即导电层，起导电作用)的电阻的方式来实现。由于金属层1由多条金属线组成，因此，可以通过增加金属层1中的金属线的厚度或宽度的方式降低金属层1的电阻，但这种方式会增加金属层1中的金属线的厚度或宽度，而金属层1中的金属线宽度的增加会影响柔性显示基板的分辨率，金属层1中的金属线厚度的增加会影响柔性显示基板的弯折性能。
发明内容
有鉴于此，本申请实施例提供了一种柔性显示基板及显示装置，以解决现有技术中柔性显示基板的导电层厚度的增加会降低柔性显示基板的弯折性能的问题。
第一方面，本申请一实施例提供一种柔性显示基板，包括柔性基板和位于柔 性基板上的导电层，导电层和柔性基板沿延展方向被分为弯折区和非弯折区，弯折区的导电层的厚度小于非弯折区的导电层的厚度。
在本申请一实施例中，弯折区的导电层的非延展方向的上边缘或下边缘与非弯折区的导电层的同一侧边缘共线。
在本申请一实施例中，弯折区的导电层的非延展方向的上边缘和下边缘与非弯折区的导电层的同一侧边缘均不共线。
在本申请一实施例中，弯折区的导电层的非延展方向的上边缘和/或下边缘为锯齿形边缘。
在本申请一实施例中，弯折区的导电层的非延展方向的上边缘和/或下边缘为弧形边缘。
在本申请一实施例中，弯折区的导电层的非延展方向的上边缘和/或下边缘为波浪形边缘。
在本申请一实施例中，弯折区的厚度为200nm至400nm。
在本申请一实施例中，非弯折区的厚度为250nm至600nm。
在本申请一实施例中，弯折区的导电层包括孔洞。
在本申请一实施例中，弯折区的导电层包括有机层，导电层包覆有机层。
第二方面，本申请一实施例还提供一种显示装置，包括上述任一实施例所描述的柔性显示基板。
本申请实施例提供的柔性显示基板通过将柔性显示基板沿延展方向划分成弯折区和非弯折区，并设置弯折区的导电层厚度小于非弯折区的导电层的厚度的方式，实现了既降低柔性显示基板的导电层的电阻值又不影响柔性显示基板的弯折区的弯折性能的目的，为将柔性显示基板应用到大屏可折叠的显示装置提供了必要条件。
附图简要说明
图1所示为现有技术中的柔性显示基板的结构示意图。
图2所示为本申请一实施例提供的柔性显示基板的结构示意图。
图3所示为本申请另一实施例提供的柔性显示基板的结构示意图。
图4所示为本申请又一实施例提供的柔性显示基板的结构示意图。
图5所示为本申请再一实施例提供的柔性显示基板的结构示意图。
实施本发明的方式
为使本申请的目的、技术手段和优点更加清楚明白，以下结合附图对本申请作进一步详细说明。
图2所示为本申请一实施例提供的柔性显示基板的结构示意图。如图2所示，本申请实施例提供的柔性显示基板包括依次沿自上而下方向(如图2所示的自上而下方向)层叠排列的导电层4、绝缘层2和柔性基板3，沿自上而下方向层叠排列的导电层4、绝缘层2和柔性基板3被沿延展方向划分成弯折区N2和非弯折区N1，弯折区N2的导电层4的厚度小于非弯折区N1的导电层4的厚度，即弯折区N2的导电层4的下边缘(如图2所示的下边缘)和非弯折区N1的导电层4的下边缘(如图2所示的下边缘)处于同一水平线(即共线)上，弯折区N2的导电层4的上边缘(如图2所示的上边缘)沿水平方向低于非弯折区N1的导电层4的上边缘(如图2所示的上边缘)。
注意，本申请实施例中所提及的延展方向指的是水平方向，即图2所示的左右方向，非延展方向指的是垂直方向，即图2所示的上下方向。
本申请实施例的理论基础如下所述。
改进前的导电层电阻为：
R1＝ρL/S1             (1)
改进前的导电层电流为：
I1＝V/R1＝V/(ρL/S1)            (2)
在公式(1)和公式(2)中，S1＝W*h1，W表示导电层宽度，L表示导电层长度，h1表示导电层厚度，S1表示导电层横截面面积，ρ表示导电层密度值，R1表示导电层电阻，I1表示导电层电流，V表示电压值。
改进后的导电层电阻为：
Figure PCTCN2018090260-appb-000001
改进后的导电层电流为：
Figure PCTCN2018090260-appb-000002
在公式(3)和公式(4)中，横截面积S1＝W*h1，S2＝W*(h1+h2)，S1＝S3，S1<S2，L1表示弯折区的导电层长度，L2和L3表示加厚的非弯折区的导电层长度，L1+L2+L3＝L，S1表示对应的弯折区的导电层横截面面积，S2和S3表示对应的加厚的非弯折区的导电层横截面面积，I1′表示改进后的导电层电流，V表示电压值。
改进前后的电阻大小对比为：
Figure PCTCN2018090260-appb-000003
在公式(5)中，L-L1>0，
Figure PCTCN2018090260-appb-000004
因此得出R1＞R1′。
改进前后的电流大小对比为：
Figure PCTCN2018090260-appb-000005
在公式(6)中，根据计算可得出I1-I1′＜0，即I1＜I1′。
综上，通过上述分析可得出，增加厚度后，导电层的电阻可以有效地降低，导电层的电流可以有效地提升。
本申请实施例提供的柔性显示基板通过将柔性显示基板沿延展方向划分成弯折区和非弯折区，并设置弯折区的导电层厚度小于非弯折区的导电层的厚度的方式，实现了既降低柔性显示基板的导电层的电阻值、提升导电层的电流值又不影响柔性显示基板的弯折区的弯折性能的目的，为将柔性显示基板应用到大屏可折叠的显示装置提供了必要条件。
应当理解，在本申请一实施例中，亦可以是弯折区N2的导电层4的上边缘(如图2所示的上边缘)和非弯折区N1的导电层4的上边缘(如图2所示的上边缘)处于同一水平线(即共线)上，弯折区N2的导电层4的下边缘(如图2所示的下边缘)在水平方向高于非弯折区N1的导电层4的下边缘(如图2所示的下边缘)，从而达到弯折区N2的导电层4的厚度小于非弯折区N1的导电层4的厚度的目的，以充分增加本申请实施例提供的柔性显示基板的适应性和可扩展性。
此外，应当注意，弯折区N2和非弯折区N1具体设置范围以及设置点位可根据实际情况自由设置，本申请实施例在此不作限定。
优选地，将本申请实施例中的导电层4设置为金属层，以便导电层4能够更好地发挥导电作用。
应当理解，导电层4的材质亦可以设置为导电塑料或导电橡胶等材质，本申请对此不作限定。
图3所示为本申请另一实施例提供的柔性显示基板的结构示意图。在本申请图2所示的实施例的基础上延伸出本申请实施例，下面着重叙述不同之处，相同之处不再赘述。如图3所示，本申请实施例提供的柔性显示基板的非弯折区N1的导电层4的上边缘(如图3所示的上边缘)沿延展方向(即水平方向)高于弯折区N2的导电层4的上边缘(如图3所示的上边缘)，并且非弯折区N1的导电层4的下边缘(如图3所示的下边缘)沿延展方向(即水平方向)低于弯折区N2的导电层4的下边缘(如图3所示的下边缘)。
本申请实施例提供的柔性显示基板通过将非弯折区的导电层的上边缘设置为沿延展方向(即水平方向)高于弯折区的导电层的上边缘、将非弯折区的导电层的下边缘设置为沿延展方向(即水平方向)低于弯折区的导电层的下边缘的方式，即从非弯折区的导电层的非延展方向(即垂直方向)两端分别增加非弯折区的导电层的厚度的方式，更好地实现了既降低柔性显示基板的导电层的电阻值又不影 响柔性显示基板的弯折区的弯折性能的目的。
应当理解，本申请上述实施例描述的柔性显示基板的非弯折区N1的导电层4的上边缘和/或下边缘和对应的弯折区N2的导电层4的上边缘和/或下边缘处于同一水平线的情况中，非弯折区N1的导电层4的上边缘和/或下边缘和对应的弯折区N2的导电层4的上边缘和/或下边缘亦可以只需共线就好，并不强制要求是水平线。
图4所示为本申请又一实施例提供的柔性显示基板的结构示意图。在本申请图3所示的实施例的基础上延伸出本申请实施例，下面着重叙述不同之处，相同之处不再赘述。如图4所示，本申请实施例提供的柔性显示基板的弯折区N2的导电层4的下边缘(如图4所示的下边缘)为锯齿形边缘。
本申请实施例提供的柔性显示基板通过将柔性显示基板的弯折区的导电层的下边缘(如图4所示的下边缘)设置为锯齿形边缘的方式，提高了弯折区的导电层的弯折性能，尤其是向上弯折(如图4所示的上方)的弯折性能。
应当理解，亦可以是柔性显示基板的弯折区N2的导电层4的上边缘(如图4所示的上边缘)设置为锯齿形边缘，以提高弯折区N2的导电层4的弯折性能，尤其是向下弯折(如图4所示的下方)的弯折性能。
图5所示为本申请再一实施例提供的柔性显示基板的结构示意图。在本申请图4所示的实施例的基础上延伸出本申请实施例，下面着重叙述不同之处，相同之处不再赘述。如图5所示，本申请实施例提供的柔性显示基板的弯折区N2的导电层4的非延展方向(即垂直方向)的上边缘和下边缘(如图4所示的上边缘和下边缘)均为锯齿形边缘。
本申请实施例提供的柔性显示基板通过将柔性显示基板的弯折区的导电层的上边缘和下边缘(如图4所示的上边缘和下边缘)设置为锯齿形边缘的方式，提高了弯折区的导电层的弯折性能，尤其是沿非延展方向弯折即向上弯折(如图4所示的上方)和向下弯折(如图4所示的下方)的弯折性能。
应当理解，上述实施例所提供的柔性显示基板的弯折区N2的导电层4的上边缘和/或下边缘亦可以是弧形边缘和/或波浪形边缘，不限于本申请上述实施例所提供的锯齿形边缘，本申请实施例在此不再一一赘述。
在本申请一实施例中，柔性显示基板的弯折区N2的导电层4包括孔洞，以充分增强弯折区N2的导电层4的弯折性能，其中，孔洞的具体设置位置和设置方式本申请实施例不再详细叙述，任何本领域技术人员能够容易想到的孔洞的具体设置位置和设置方式均应包含在本申请实施例内。
在本申请一实施例中，柔性显示基板的弯折区N2的导电层4包括有机层，导电层4包覆有机层，以便利用导电层4实现导电功能，利用有机层增强导电层4的弯折性能的目的。
在本申请一实施例中，导电层4为金属层，且金属层包括若干金属线，金属线包括有机层和增强导电层，增强导电层包覆有机层，其中，金属线的有机层和增强导电层的具体包覆方式本申请实施例不再详细叙述，任何本领域技术人员能够容易想到的有机层和导电层的具体包覆方式均应包含在本申请实施例内。
在本申请一实施例中，优选地，弯折区N2的厚度为200nm至400nm，非弯折区N1的厚度根据实际情况自行设定，只需大于弯折区N2的厚度即可。将弯折区N2的厚度设定为200nm至400nm能够在保持柔性显示基板的分辨率不变的前提下使柔性显示基板具备较好的弯折性能。
在本申请一实施例中，优选地，非弯折区N1的厚度为250nm至600nm，弯折区N2的厚度根据实际情况自行设定，只需小于非弯折区N1的厚度即可。将非弯折区N1的厚度为250nm至600nm能够在保持柔性显示基板的导电电阻不变的前提下使柔性显示基板具备较好的弯折性能。
一种显示装置，包括上述任一实施例所叙述的柔性显示基板。
应当理解，显示装置包括但不限于手机、平板电脑、笔记本电脑等电子设备。
以上仅为本申请的较佳实施例而已，并非用于限定本申请的保护范围。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种柔性显示基板，包括柔性基板和位于所述柔性基板上的导电层，其中，所述导电层和柔性基板沿延展方向被分为弯折区和非弯折区，所述弯折区的所述导电层的厚度小于所述非弯折区的所述导电层的厚度。
  2. 如权利要求1所述的柔性显示基板，其中，所述弯折区的所述导电层的非延展方向的上边缘或下边缘与所述非弯折区的所述导电层的同一侧边缘共线。
  3. 如权利要求1所述的柔性显示基板，其中，所述弯折区的所述导电层的非延展方向的上边缘和下边缘与所述非弯折区的所述导电层的同一侧边缘均不共线。
  4. 如权利要求1至3任一所述的柔性显示基板，其中，所述弯折区的所述导电层的非延展方向的上边缘和/或下边缘为锯齿形边缘、弧形边缘、波浪形边缘中的至少一种。
  5. 如权利要求1至3任一所述的柔性显示基板，其中，所述弯折区的厚度为200nm至400nm。
  6. 如权利要求1至3任一所述的柔性显示基板，其中，所述非弯折区的厚度为250nm至600nm。
  7. 如权利要求1至3任一所述的柔性显示基板，其中，所述弯折区的所述导电层包括孔洞。
  8. 如权利要求1至3任一所述的柔性显示基板，其中，所述弯折区的所述导电层包括有机层，所述导电层包覆所述有机层。
  9. 如权利要求1至3任一所述的柔性显示基板，其中，进一步包括绝缘层，所述绝缘层位于所述柔性基板和所述导电层之间。
  10. 一种显示装置，包括如权利要求1至9任一所述的柔性显示基板。
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CN207134069U9 (zh) * 2017-08-31 2019-09-27 昆山国显光电有限公司 柔性显示基板及显示装置
CN108598263A (zh) * 2018-06-19 2018-09-28 昆山国显光电有限公司 用于柔性显示面板的支撑膜、柔性显示面板及其制备方法
CN109545823A (zh) * 2018-10-23 2019-03-29 武汉华星光电半导体显示技术有限公司 阵列基板、该阵列基板的制备方法及显示面板
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CN110393507B (zh) * 2019-08-01 2020-12-25 清华大学 柔性可延展电子器件的结构设计及其制造方法
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001013884A (ja) * 1999-06-30 2001-01-19 Matsushita Electric Ind Co Ltd 表示装置
CN105474290A (zh) * 2013-03-07 2016-04-06 株式会社半导体能源研究所 显示装置
CN106920829A (zh) * 2017-03-30 2017-07-04 京东方科技集团股份有限公司 一种柔性显示面板、显示装置及柔性显示面板的制作方法
CN106952937A (zh) * 2017-04-28 2017-07-14 京东方科技集团股份有限公司 走线结构、显示基板及显示装置
CN107079579A (zh) * 2014-10-10 2017-08-18 苹果公司 用于柔性基板的信号迹线图案
CN207134069U (zh) * 2017-08-31 2018-03-23 昆山国显光电有限公司 柔性显示基板及显示装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102222680B1 (ko) * 2013-02-01 2021-03-03 엘지디스플레이 주식회사 플렉서블 디스플레이 기판, 플렉서블 유기 발광 표시 장치 및 플렉서블 유기 발광 표시 장치 제조 방법
KR102097150B1 (ko) * 2013-02-01 2020-04-03 엘지디스플레이 주식회사 플렉서블 디스플레이 기판, 플렉서블 유기 발광 표시 장치 및 플렉서블 유기 발광 표시 장치 제조 방법
CN106783880A (zh) 2016-12-26 2017-05-31 上海天马有机发光显示技术有限公司 一种柔性显示面板及其制作工艺

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001013884A (ja) * 1999-06-30 2001-01-19 Matsushita Electric Ind Co Ltd 表示装置
CN105474290A (zh) * 2013-03-07 2016-04-06 株式会社半导体能源研究所 显示装置
CN107079579A (zh) * 2014-10-10 2017-08-18 苹果公司 用于柔性基板的信号迹线图案
CN106920829A (zh) * 2017-03-30 2017-07-04 京东方科技集团股份有限公司 一种柔性显示面板、显示装置及柔性显示面板的制作方法
CN106952937A (zh) * 2017-04-28 2017-07-14 京东方科技集团股份有限公司 走线结构、显示基板及显示装置
CN207134069U (zh) * 2017-08-31 2018-03-23 昆山国显光电有限公司 柔性显示基板及显示装置

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