WO2019091009A1 - 柔性显示模组及其制作方法 - Google Patents

柔性显示模组及其制作方法 Download PDF

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Publication number
WO2019091009A1
WO2019091009A1 PCT/CN2018/075988 CN2018075988W WO2019091009A1 WO 2019091009 A1 WO2019091009 A1 WO 2019091009A1 CN 2018075988 W CN2018075988 W CN 2018075988W WO 2019091009 A1 WO2019091009 A1 WO 2019091009A1
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Prior art keywords
flexible
flexible display
display panel
display module
carrier plate
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PCT/CN2018/075988
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English (en)
French (fr)
Inventor
毕炜
林书如
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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 US16/001,718 priority Critical patent/US20190143664A1/en
Publication of WO2019091009A1 publication Critical patent/WO2019091009A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • the present invention relates to the field of display technologies, and in particular, to a flexible display module and a method for fabricating the same.
  • Flexible display panels are receiving more and more attention due to their advantages of being thin, non-fragile, bendable, and wearable.
  • the thickness of the rubber material is uneven during the bending process of the display panel, and the surface of the flexible display panel appears.
  • the phenomenon of waviness affects the user's visual experience.
  • An object of the present invention is to provide a flexible display module and a manufacturing method thereof, which solve the phenomenon that the flexible display panel wrinkles due to uneven thickness of the rubber material during the bending process.
  • the present invention provides a flexible display module comprising: a flexible carrier panel and a flexible display panel, the flexible display panel comprising a folded area and a peripheral area disposed on opposite sides of the folded area, the flexible display panel being laminated on The flexible carrier plate surface, the flexible carrier plate includes a first portion overlapping the folded region and a second portion overlapping the peripheral region, the first portion having a pre-tensioning stress for the flexible display mode The group is bent against the folded area of the flexible display panel.
  • an angle between a tangent to the first partial bending vertex and a tangent passing through the end of the second portion is 0-20 degrees.
  • the first portion of the flexible carrier plate has a pre-tensioning stress in a first bending direction and a pre-tensioning stress in a second bending direction, the first direction being opposite to the second direction.
  • the material of the flexible carrier plate is a metal, an amorphous metal or an organic compound.
  • the molding method of the flexible carrier plate comprises mold forming and hot bending forming.
  • the flexible carrier plate has bending resistance and can carry the bending times more than 200,000 times.
  • the flexible display panel is laminated with a base layer
  • the base layer is provided with a flexible cover plate
  • the flexible display panel and the base layer are connected by a first adhesive layer
  • the flexible cover and the base are joined by a second glue layer.
  • the base layer comprises a circular polarizer and an inductor.
  • the invention provides a method for manufacturing a flexible display module, comprising:
  • a base layer and a flexible cover are sequentially laminated on the flexible display panel.
  • the step of pre-bending the flexible carrier plate includes pre-bending the flexible carrier plate and fixing the flexible carrier plate to the carrier.
  • the flexible display panel of the flexible display module of the present invention is laminated on the flexible carrying frame, and the first portion of the flexible carrying frame has a pre-tensioning stress, and when the flexible display module is bent, the pre-tensioning The stress resists the flexible display panel, thereby eliminating the thickness unevenness of the flexible display panel during the bending process, and achieving the technical effect of slowing the wrinkles of the flexible display panel.
  • FIG. 1 is a schematic plan view showing the internal side view of a flexible display module according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the internal planar structure of the flexible display panel of FIG. 1.
  • FIG. 3 is a schematic view showing the internal planar structure of the flexible carrier plate of FIG. 1 pre-bent.
  • FIG. 4 is a schematic plan view showing a flexible display module in a bent state according to an embodiment of the present invention.
  • FIG. 5 is a schematic view showing another internal planar structure of the flexible carrier plate of FIG. 1 pre-bent.
  • FIG. 6 is a schematic plan view showing a state in which a flexible display module is bent in another direction according to an embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a method for fabricating a flexible display module according to an embodiment of the present invention.
  • the present invention provides a flexible display module including: a flexible carrier 10 and a flexible display panel 20 , the flexible display panel 20 including a folded area 201 and opposite sides of the folded area 201
  • the peripheral display area 202, the flexible display panel 20 is laminated on the surface of the flexible carrier 10, the flexible carrier 10 includes a first portion 101 overlapping the folded region 201 and a second overlapping the peripheral region 202
  • the portion 102 has a pre-tensioning stress for opposing the folded region 201 of the flexible display panel 20 when the flexible display module is bent.
  • the flexible carrier 10 and the flexible display panel 20 are connected by a double-sided tape 30.
  • the material of the flexible carrier plate 10 is a metal, amorphous metal or organic compound.
  • the molding method of the flexible carrier plate 10 includes mold forming and hot bending forming.
  • the flexible carrier plate 10 has bending resistance and can carry the bending times more than 200,000 times.
  • the flexible display panel 20 includes a first layer 201 and a second layer 202 disposed on the first layer 201, the first layer 201 and the second layer. 202 is connected by a glue 203.
  • the first portion 101 of the flexible carrier board 10 of the present invention is pre-bent before being attached to the flexible display panel 20, and the first portion 101 of the flexible carrier board 10 is changed from a pre-bending state to a leveling During the state, a pre-tensioning stress is generated, which overcomes the hysteresis of the rubber material 203 when the flexible display panel 20 is bent, and achieves the technical effect of slowing the wrinkles of the flexible display panel 20.
  • the angle between the tangent to the apex of the first portion 101 and the tangent to the end of the second portion 102 is 0-20 degrees, wherein the bend
  • the apex of the fold is an apex that is bent into an arc shape throughout the carrier sheet 10.
  • the first portion 101 of the flexible carrier plate 10 has a pre-tensioning stress in a first bending direction and a pre-tensioning stress in a second bending direction, the first bending direction being opposite to the second bending direction.
  • the flexible display panel 20 is laminated with a base layer 40 , and the base layer 40 is provided with a flexible cover 50 , and the flexible display panel 20 and the base layer 40 pass through the first adhesive layer 60 .
  • the flexible cover 50 is connected to the base layer 40 through the second adhesive layer 70.
  • the base layer 40 includes a circular polarizer 401 and an inductor 402.
  • the sensor 402 is disposed on the circular polarizer 401, and the sensor 402 is used to sense ambient light, and the circular polarizing plate 401 is used to resist ambient light and reduce interference of the ambient light on display.
  • the flexible cover 50 is a resin cover for protecting the flexible display panel 20.
  • the flexible display device can be bent or bent at a specific area thereof.
  • the two second portions 102 are opposite to each other.
  • the first portion 101 of the flexible carrier board 10 Before the flexible carrier board 10 is attached to the flexible display panel 20, the first portion 101 of the flexible carrier board 10 has a pre-bending direction opposite to the first bending direction, as shown in FIG.
  • the first portion 101 When the first portion 101 is changed from the pre-bending state to the flattened state, a pre-tension stress is generated in the same direction as the first bending direction; the first portion 101 of the flexible carrier plate 10 is After the flexible display panel 20 is attached, when the flexible display module is bent in the first bending direction, the first portion 101 generates the same pre-tension stress as the first bending direction against the flexibility.
  • the flexible display module may be folded such that an angle between the two second portions 102 is between 0 and 180 degrees.
  • the first bending direction is a direction from the flexible carrier plate 10 to the flexible cover 40.
  • the flexible cover plates 40 are opposite to each other.
  • the first portion 101 of the flexible carrier board 10 Before the flexible carrier board 10 is attached to the flexible display panel 20, the first portion 101 of the flexible carrier board 10 has a pre-bending direction opposite to the second bending direction, as shown in FIG.
  • the first portion 101 When the first portion 101 is changed from the pre-bending state to the flattened state, a pre-tension stress is generated in the same direction as the second bending direction; the first portion 101 of the flexible carrier 10 is in the After the flexible display panel 20 is attached, when the flexible display module is bent in the second bending direction, the first portion 101 generates the same pre-tension stress in the second bending direction against the flexibility.
  • the flexible display module may be folded such that an angle between the two second portions 102 is between 0 and 180 degrees.
  • the second bending direction is a direction from the flexible cover 40 to the flexible carrier plate 10.
  • the present invention provides a method for fabricating a flexible display module, including:
  • Step 1 Pre-bend the flexible carrier plate 10. Specifically, the flexible carrier plate 10 is pre-bent, and the flexible carrier plate 10 is bent into an arc shape and fixed to the carrier. The angle between the tangent to the apex of the first portion 101 of the flexible carrier 10 and the tangent to the end of the second portion 102 of the flexible carrier 10 is 0-20 degrees, and the bending apex is the entire The flexible carrier plate 10 is bent into an arcuate apex.
  • the flexible carrier plate 10 is leveled. Specifically, when the flexible carrier plate 10 is changed from the pre-bending state to the leveling state, the flexible carrier plate 10 generates a pre-tensioning stress, and the pre-tensioning stress may be a pre-tensioning stress of the first bending direction and the first a pre-tensioning stress in a bending direction, the first bending direction being opposite to the second bending direction.
  • Step 3 laminating the flexible display panel 20 on the flexible carrier board 10. Specifically, the flexible display panel 20 is laminated on the flexible carrier 10 by a double-sided tape 30.
  • step 4 the base layer 40 and the flexible cover 50 are sequentially laminated on the flexible display panel 20. Specifically, the base layer 40 is laminated on the flexible display panel 20 by the first adhesive layer 60, and the flexible cover 50 is laminated on the base layer 40 by the second adhesive layer 70.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)
  • Laminated Bodies (AREA)

Abstract

一种柔性显示模组，包括：柔性承载板（10）以及柔性显示面板（20），柔性显示面板（20）包括折叠区域（201）和设置在折叠区域（201）的相对两侧的周边区域（202），柔性显示面板（20）层叠于柔性承载板（10）表面，柔性承载板（10）包括与折叠区域（201）重叠的第一部分（101）和与周边区域（202）重叠的第二部分（102），第一部分（101）具有预张应力，用于柔性显示模组弯折时对抗柔性显示面板（20）的折叠区域（201）。柔性显示模组解决了柔性显示面板（20）在弯折过程中胶材的厚度不均匀导致的柔性显示面板（20）出现褶皱的现象。

Description

柔性显示模组及其制作方法
本发明要求2017年11月10日递交的发明名称为“柔性显示模组及其制作方法”的申请号201711105250.1的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及显示技术领域，特别涉及一种柔性显示模组及其制作方法。
背景技术
由于柔性显示面板轻薄、不易碎、可弯曲以及可佩戴等优点，柔性显示面板受到越来越多的关注。但柔性显示面板在弯折及摊平过程中，由于设于所述柔性显示面板中的胶材的迟滞现象，导致显示面板在弯折过程中胶材的厚度不均匀，进而柔性显示面板表面出现褶皱(Waviness)的现象，影响使用者的视觉体验。
发明内容
本发明的目的在于提供一种柔性显示模组及其制作方法，解决了柔性显示面板在弯折过程中胶材的厚度不均匀导致的柔性显示面板出现褶皱的现象。
本发明提供一种柔性显示模组，包括:柔性承载板以及柔性显示面板，所述柔性显示面板包括折叠区域和设置在所述折叠区域的相对两侧的周边区域，所述柔性显示面板层叠于所述柔性承载板表面，所述柔性承载板包括与所述折叠区域重叠的第一部分和与所述周边区域重叠的第二部分，所述第一部分具有预张应力，用于所述柔性显示模组弯折时对抗所述柔性显示面板的折叠区域。
其中，过所述第一部分弯折顶点的切线与过所述第二部分端点的切线之间的夹角为0-20度。
其中，所述柔性承载板的所述第一部分具有第一弯折方向的预张应力和第二弯折方向的预张应力，所述第一方向与所述第二方向相反。
其中，所述柔性承载板的材料为金属、非晶金属或有机物复合物。
其中，所述柔性承载板的成型方式包括模具成型和热弯成型。
其中，所述柔性承载板具有耐弯折性，可承载弯折次数大于200000次。
其中，所述柔性显示面板上层叠有基体层，所述基体层上设有柔性盖板，所述柔性显示面板与所述基体层通过第一胶层连接，所述柔性盖板与所述基体层通过第二胶层连接。
其中，所述基体层包括圆偏光片以及感应器。
本发明提供了一种柔性显示模组的制作方法，包括：
预弯折柔性承载板；
摊平所述柔性承载板；
在所述柔性承载板上层叠柔性显示面板；
在所述柔性显示面板上依次层叠基体层以及柔性盖板。
其中，所述预弯折柔性承载板的步骤包括预弯折柔性承载板并将所述柔性承载板固定于载具。
综上所述，本发明柔性显示模组的柔性显示面板层叠于柔性承载框，而所述柔性承载框的第一部分具有预张应力，在所述柔性显示模组弯折时，所述预张应力对抗所述柔性显示面板，进而消除所述柔性显示面板在弯折过程中产生的厚度不均匀，达到减缓所述柔性显示面板褶皱的技术效果。
附图说明
为了更清楚地说明本发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是本发明实施例提供的柔性显示模组内部侧视方向的平面结构示意图。
图2是图1中柔性显示面板的内部平面结构示意图。
图3是图1中柔性承载板预弯折的内部平面结构示意图。
图4是本发明实施例提供的柔性显示模组处于弯折状态的平面示意图。
图5是图1中柔性承载板预弯折的另一种内部平面结构示意图。
图6是本发明实施例提供的柔性显示模组处于另一方向折弯状态平面示意图。
图7是本发明实施例提供的柔性显示模组制作方法流程示意图。
具体实施方式
请参阅图1，本发明提供了一种柔性显示模组，包括:柔性承载板10以及柔性显示面板20，所述柔性显示面板20包括折叠区域201和设置在所述折叠区域201的相对两侧的周边区域202，所述柔性显示面板20层叠于所述柔性承载板10表面，所述柔性承载板10包括与所述折叠区域201重叠的第一部分101和与所述周边区域202重叠的第二部分102，所述第一部分101具有预张应力，用于所述柔性显示模组弯折时对抗所述柔性显示面板20的折叠区域201。在本实施例中，所述柔性承载板10与所述柔性显示面板20通过双面胶30连接。所述柔性承载板10的材料为金属、非晶金属或有机物复合物。所述柔性承载板10的成型方式包括模具成型和热弯成型。所述柔性承载板10具有耐弯折性，可承载弯折次数大于200000次。
请参阅图2，在本实施例中，所述柔性显示面板20包括第一层201以及设于所述第一层201上的第二层202，所述第一层201以及所述第二层202通过胶材203连接。本发明所述柔性承载板10的所述第一部分101在与所述柔性显示面板20贴合前预弯折，所述柔性承载板10的所述第一部分101从预弯折状态变为摊平状态的过程中，产生预张应力，所述预张应力对抗所述柔性显示面板20弯折时所述胶材203的迟滞，达到了减缓所述柔性显示面板20褶皱的技术效果。所述柔性承载板10处于预弯折状态时，过所述第一部分101弯折顶点的切线与过所述第二部分102端点的切线之间的夹角为0-20度，其中所述弯折顶点为整个所述承载板10弯折成弧形的顶点。所述柔性承载板10的所述第一部分101具有第一弯折方向的预张应力和第二弯折方向的预张应力，所述第一弯折方向与所述第二弯折方向相反。
请继续参阅图1，所述柔性显示面板20上层叠有基体层40，所述基体层40上设有柔性盖板50，所述柔性显示面板20与所述基体层40通过第一胶层60连接，所述柔性盖板50与所述基体层40通过第二胶层70连接。所述基体 层40包括圆偏光片401以及感应器402。所述感应器402置于所述圆偏光片401上，所述感应器402用于感受环境光，所述圆偏振片401用于抵抗环境光及减少所述环境光对显示的干扰。所述柔性盖板50为树脂盖板，用于保护所述柔性显示面板20。
请参阅图3、图4，所述柔性显示装置可以被弯曲或在其特定的区域被弯折。所述柔性显示模组向第一弯折方向弯折时，两个所述第二部分102彼此相对。由于所述柔性承载板10与所述柔性显示面板20贴合前，所述柔性承载板10的所述第一部分101预弯折方向与所述第一弯折方向相反，如图3所示，所述第一部分101从预弯折状态变为摊平状态时，产生了一个与所述第一弯折方向相同的预张应力；所述柔性承载板10的所述第一部分101在与所述柔性显示面板20贴合后，所述柔性显示模组向所述第一弯折方向弯折时，所述第一部分101产生的与所述第一弯折方向相同的预张应力对抗所述柔性显示面板20所述胶材203的迟滞，进而消除了所述胶材203的厚度不均匀性，减缓了所述柔性显示面板20的褶皱。所述柔性显示模组可以被折叠成使得所述两个所述第二部分102之间夹角为0度至180度。所述第一弯折方向为从所述柔性承载板10到所述柔性盖板40的方向。
请参阅图5、图6，所述柔性显示模组向第二弯折方向弯折时，所述柔性盖板40彼此相对。由于所述柔性承载板10与所述柔性显示面板20贴合前，所述柔性承载板10的所述第一部分101预弯折方向与所述第二弯折方向相反，如图4所示，所述第一部分101从预弯折状态变为摊平状态时，产生了一个与所述第二弯折方向相同的预张应力；所述柔性承载板10的所述第一部分101在与所述柔性显示面板20贴合后，所述柔性显示模组向所述第二弯折方向弯折时，所述第一部分101产生的与所述第二弯折方向相同的预张应力对抗所述柔性显示面板20所述胶材203的迟滞，进而消除了所述胶材203的厚度不均匀性，减缓了所述柔性显示面板20的褶皱。所述柔性显示模组可以被折叠成使得所述两个所述第二部分102之间夹角为0度至180度。所述第二弯折方向为从所述柔性盖板40到所述柔性承载板10的方向。
请参阅图7，本发明提供了一种柔性显示模组的制作方法，包括：
步骤1，预弯折柔性承载板10。具体为，将所述柔性承载板10预弯折， 所述柔性承载板10弯折成弧形并被固定于载具。过所述柔性承载板10第一部分101弯折顶点的切线与过所述柔性承载板10第二部分102端点的切线之间的夹角为0-20度，所述弯折顶点为整个所述柔性承载板10弯折成弧形的顶点。
步骤2，摊平所述柔性承载板10。具体为，所述柔性承载板10从预弯折状态变为摊平状态时，所述柔性承载板10产生预张应力，所述预张应力可以为第一弯折方向的预张应力和第二弯折方向的预张应力，所述第一弯折方向与所述第二弯折方向相反。
步骤3，在所述柔性承载板10上层叠柔性显示面板20。具体为，通过双面胶30将所述柔性显示面板20层叠于所述柔性承载板10上。
步骤4，在所述柔性显示面板20上依次层叠基体层40以及柔性盖板50。具体为，通过第一胶层60将所述基体层40层叠于所述柔性显示面板20上，通过第二胶层70将所述柔性盖板50层叠于所述基体层40上。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (10)

  1. 一种柔性显示模组，其中，包括:柔性承载板以及柔性显示面板，所述柔性显示面板包括折叠区域和设置在所述折叠区域的相对两侧的周边区域，所述柔性显示面板层叠于所述柔性承载板表面，所述柔性承载板包括与所述折叠区域重叠的第一部分和与所述周边区域重叠的第二部分，所述第一部分具有预张应力，用于所述柔性显示模组弯折时对抗所述柔性显示面板的折叠区域。
  2. 根据权利要求1所述的柔性显示模组，其中，过所述第一部分弯折顶点的切线与过所述第二部分端点的切线之间的夹角为0-20度。
  3. 根据权利要求1所述的柔性显示模组，其中，所述柔性承载板的所述第一部分具有第一弯折方向的预张应力和第二弯折方向的预张应力，所述第一方向与所述第二方向相反。
  4. 根据权利要求1所述的柔性显示模组，其中，所述柔性承载板的材料为金属、非晶金属或有机物复合物。
  5. 根据权利要求1所述的柔性显示模组，其中，所述柔性承载板的成型方式包括模具成型和热弯成型。
  6. 根据权利要求1所述的柔性显示模组，其中，所述柔性承载板具有耐弯折性，可承载弯折次数大于200000次。
  7. 根据权利要求1所述的柔性显示模组，其中，所述柔性显示面板上层叠有基体层，所述基体层上设有柔性盖板，所述柔性显示面板与所述基体层通过第一胶层连接，所述柔性盖板与所述基体层通过第二胶层连接。
  8. 根据权利要求7所述的柔性显示模组，其中，所述基体层包括圆偏光片以及感应器。
  9. 一种柔性显示模组的制作方法，其中，包括：
    预弯折柔性承载板；
    摊平所述柔性承载板；
    在所述柔性承载板上层叠柔性显示面板；
    在所述柔性显示面板上依次层叠基体层以及柔性盖板。
  10. 根据权利要求9所述的柔性显示模组的制作方法，其中，所述预弯折 柔性承载板的步骤包括预弯折柔性承载板并将所述柔性承载板固定于载具。
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