WO2020118905A1 - 复合膜层的制作方法及显示器件 - Google Patents

复合膜层的制作方法及显示器件 Download PDF

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Publication number
WO2020118905A1
WO2020118905A1 PCT/CN2019/076058 CN2019076058W WO2020118905A1 WO 2020118905 A1 WO2020118905 A1 WO 2020118905A1 CN 2019076058 W CN2019076058 W CN 2019076058W WO 2020118905 A1 WO2020118905 A1 WO 2020118905A1
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film
transparent substrate
transparent
substrate film
manufacturing
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PCT/CN2019/076058
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English (en)
French (fr)
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赵宸
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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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Priority to US16/462,958 priority Critical patent/US10978679B2/en
Publication of WO2020118905A1 publication Critical patent/WO2020118905A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • 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

Definitions

  • the present invention relates to the field of display technology, and in particular to a method for manufacturing a composite film layer for a display panel and a display device.
  • AMOLED active matrix organic light emitting diodes
  • LCD thin-film Compared with transistor-liquid crystal display
  • the cover window is the outermost layer of the flexible folding screen and should have both high hardness and bending resistance.
  • the current research found that the hardness and bending characteristics of the cover plate are inversely proportional (Trade off), that is, the high hardness Cover window has poor bendability, and it is easy to crack or break when bending out, while the Cover window with good bendability The hardness is low.
  • the object of the present invention is to provide a method for manufacturing a composite film layer for a display panel, to improve the bending resistance of the composite film layer, and to enhance the compactness of the film and the surface hardness when the film is flat,
  • the film is not easy to crack or break when the display panel is bent.
  • the present invention provides a method for manufacturing a composite film layer, which is suitable for a bendable display panel, characterized in that the method for manufacturing the composite film layer includes: providing a transparent substrate Film; applying a predetermined degree of tensile stress to the transparent substrate film to form a deformed state of the transparent substrate film; forming a hardened layer on the transparent substrate film under the deformed state; and The tensile stress of the transparent substrate film in the deformed state is released to shrink the molecular chains in the hardened layer; wherein the deformed state of the transparent substrate film is a stretched state or a bent state, and the stretched state It is formed by stretching outwards around the transparent base film, and the bent state is formed by bending the transparent base film.
  • the transparent substrate film is made of transparent polyimide slurry, characterized in that the transparent substrate film is made of transparent polyimide slurry, wherein the transparent The polyimide slurry is formed into a film through a dissolution and casting process, and the film is biaxially stretched and then imidized by heat treatment, thereby forming a transparent substrate film including the transparent polyimide.
  • the hardened layer includes a resin component having acrylate, which is applied when the transparent substrate film is in a stretched state.
  • the invention further provides a method for manufacturing a composite film layer, which is suitable for a bendable display panel, characterized in that the method for manufacturing the composite film layer includes: providing a transparent substrate film; Applying a predetermined degree of tensile stress to the transparent substrate film to form a deformed state of the transparent substrate film; forming a hardened layer on the transparent substrate film in the deformed state; and changing the deformed state The tensile stress of the underlying transparent substrate film is released, so that the molecular chain in the hardened layer shrinks.
  • the deformation state of the transparent substrate film is a stretched state, which is formed by stretching outwards around the transparent substrate film.
  • the deformation state of the transparent substrate film is a curved state, which is formed by bending the transparent substrate film.
  • the transparent substrate film is made of a transparent polyimide slurry, wherein the transparent polyimide slurry is formed into a film through a dissolution and casting process, and is stretched in both directions The film is further imidized by heat treatment to form a transparent substrate film containing the transparent polyimide.
  • the transparent substrate film has a thickness of 50 microns or 80 microns.
  • the hardened layer includes a resin component having acrylate, which is applied when the transparent substrate film is in a stretched state.
  • the hardened layer further includes silica nanoparticles.
  • the composite film layer is formed on the display panel as a flexible cover plate of the display panel.
  • the present invention further provides a display device including a display panel and at least one composite film layer provided on the display panel, characterized in that the at least one composite film layer includes: a transparent substrate film; and a hardened layer , Provided on the transparent substrate film; wherein the transparent substrate film has a deformed state under the load of a tensile stress, and the hardened layer is formed on the transparent substrate film in a deformed state On the transparent substrate film, the deformed state includes a stretched state or a bent state.
  • the display panel includes a base substrate, a functional layer, a light-emitting film layer and a polarizer stacked in sequence, and a touch panel is provided on the display panel, wherein at least the base substrate, One of the functional layer, the light-emitting film layer, the polarizer, and the touch panel includes the composite film layer.
  • the transparent substrate film is stretched or bent by loading or releasing a predetermined degree of tensile stress on the transparent substrate film during the preparation of the composite film , And then form the hardened layer on the transparent substrate film in the deformed state to improve the bending resistance of the composite film, and when the composite film is flat, it can enhance the compactness of the film and increase its surface hardness, It effectively solves the problem that the film of the traditional bendable display panel is prone to cracks or breaks when bent.
  • FIG. 1 is an exploded schematic view of a method for manufacturing a composite film layer according to a preferred embodiment of the present invention.
  • FIG. 2 is a flowchart of the method for manufacturing the composite film layer of FIG. 1.
  • FIG 3 is an exploded schematic view of a method for manufacturing a composite film layer according to another preferred embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a display device according to a preferred embodiment of the present invention.
  • the present invention is a method for manufacturing a composite film layer, especially a method for manufacturing a film layer structure of a display panel.
  • the display panel is an organic light emitting diode display panel, which has flexibility. Available for bending.
  • FIG. 1 is an exploded schematic view of a method for manufacturing a composite film layer according to a preferred embodiment of the present invention.
  • FIG. 2 is a flowchart of the method for manufacturing the composite film layer of FIG. 1.
  • the manufacturing method of the composite film layer 1 of the present invention includes the steps shown in FIG. 2: Step S1: providing a transparent substrate film 2.
  • the transparent substrate film 2 is made of a transparent polyimide (CPI) slurry, wherein the transparent polyimide slurry is formed into a film through a general dissolution and casting process, and That is, the transparent polyimide slurry is added to a solvent for dissolution, and the film is biaxially stretched, and then imidized by heat treatment, thereby forming a transparent substrate film containing the transparent polyimide. That is, the transparent substrate film 2 is a transparent polyimide (CPI) film.
  • CPI transparent polyimide
  • Step S2 Apply a predetermined degree of tensile stress to the transparent base film 2 to form a deformed state of the transparent base film 2.
  • the deformed state is a stretched state 21 (as shown in FIG. 1), that is, around the transparent substrate film 2 with the transparent polyimide, Stretching outward with a predetermined degree of force, that is, not exceeding the elastic deformation range of the CPI film, causes the transparent substrate film 2 to form a stretched state 21.
  • the purpose of the stretched state 21 is to stretch the molecular chain of the transparent polyimide first.
  • the transparent substrate film 2 has a thickness of 50 microns or 80 microns, but it is not limited thereto.
  • Step S3 On the transparent substrate film 2 in the deformed state, a hardened layer 3 containing a resin component is formed (as shown in FIG. 1). That is, the transparent base film 2 in the stretched state is coated with the resin component.
  • the resin component includes acrylate, or in another specific embodiment, the hardened layer 2 further includes silica nanoparticles.
  • Step S4 The tensile stress of the transparent substrate film 2 in the deformed state is released. At this time, the transparent substrate film 2 is restored to be flat, so that the molecular chains in the hardened layer 3 contract (as shown in FIG. 1) Show). That is, the tensile stress of the CPI film is released, so that the molecular chains in the hardened layer 3 shrink, which is used to increase the density of the film, which is conducive to improving the hardness of the film.
  • the composite film layer of the present invention is prepared.
  • FIG. 3 is an exploded schematic view of a method for manufacturing a composite film layer according to another preferred embodiment of the present invention.
  • the embodiment shown in FIG. 3 is also produced by the same composite film layer as shown in FIG. 1, which includes the steps S1, S2, S3, and S4, and the detailed steps are not repeated here.
  • the main difference between the embodiment shown in FIG. 3 and the embodiment shown in FIG. 1 is that: in the embodiment shown in FIG. 3, the deformed state of step S2 is a bent state 22, that is, through The transparent base film 2 is applied with a predetermined degree of tensile stress to be bent, that is, it does not exceed the elastic deformation range of the CPI film, so that the transparent base film 2 is bent.
  • the purpose of the bent state 22 is to stretch the molecular chain of the transparent polyimide first.
  • step S4 the tensile stress of the CPI film in the bent state is released, so that the molecular chains in the hardened layer 3 contract, which is used to increase the density of the film and help to increase the hardness of the film.
  • the present invention further provides a display device 4 including a display panel 5 and at least one composite film layer 1 provided on the display panel.
  • the display panel 5 is a display panel with light emitting diodes.
  • the at least one composite film layer 1 includes a transparent substrate film 2 and a hardened layer 3, which are disposed on the transparent substrate film 2, wherein the transparent substrate film 2 is under a tensile stress In a deformed state, the hardened layer 3 is formed on the transparent substrate film 2 when the transparent substrate film 2 is in a deformed state.
  • the transparent substrate film 2 is made of transparent polyimide, and the deformed state includes a stretched state and a bent state.
  • the display panel 5 has a structure of a general organic light-emitting display panel.
  • the display panel 5 includes a base substrate 50 stacked in sequence, a functional layer 51 having, for example, a barrier layer and an insulating layer, and a light-emitting film having an anode layer, a light-emitting layer, and a cathode layer Layer 52, and polarizer 53.
  • a touch panel 6 may be provided on the display panel 5, wherein at least one of the base substrate 50, the functional layer 51, the light emitting film layer 52, the polarizer 53 and the touch panel 6 includes The structure of the composite membrane layer is described.
  • the composite film layer prepared according to the manufacturing method of the composite film layer of the present invention is formed on the display panel 5, that is, located on the uppermost layer of the display panel 5 as a flexible cover plate.
  • the manufacturing method of the composite film layer of the present invention can also be applied to the production of the polarizer or the barrier layer (not shown) in the functional layer 51, the purpose of which is to improve the density and surface of the composite film layer hardness.
  • the transparent substrate film is stretched or bent by loading or releasing a predetermined degree of tensile stress on the transparent substrate film during the preparation of the composite film , And then form the hardened layer on the transparent substrate film in the deformed state to improve the bending resistance of the composite film, and when the composite film is flat, it can enhance the compactness of the film and increase its surface hardness, It effectively solves the problem that the film of the traditional bendable display panel is prone to cracks or breaks when bent.

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Abstract

一种复合膜层的制作方法，所述复合膜层适用于可弯折的显示面板，其特征在于，所述复合膜层的制作方法包含：提供一透明基材薄膜；将所述透明基材薄膜施予一预定程度的拉应力，使所述透明基材薄膜形成一形变状态；在所述形变状态下的透明基材薄膜上，形成一硬化层；及将所述形变状态下的透明基材薄膜的拉应力释放，使所述硬化层内的分子链进行收缩。

Description

复合膜层的制作方法及显示器件 技术领域
本发明涉及显示技术领域，特别是涉及一种用于显示面板的复合膜层的制作方法及显示器件。
 背景技术
随着显示技术的发展，对色彩和轻便度要求越来越高，有源矩阵有机发光二极管（active matrix organic light emitting diode,AMOLED）正在逐渐走进移动设备、电视机等消费电子市场。有机发光二极管显示器具有发光亮度高、视角广、响应速度快、超薄、质量轻、可制作在柔性衬底上等特点。与传统薄膜晶体管液晶显示器(thin-film transistor-liquid crystal display,TFT-LCD)技术相比，OLED最大的优势在于其可做成柔性产品。为实现OLED的可弯折及可卷曲特性，业内研究人员在柔性材方面做了大量工作。盖板(cover window)是柔性折叠屏幕的最表层，应该兼具高硬度和耐弯折特性。但目前研究发现，盖板的硬度和弯折特性呈现反比(Trade off)关系，即高硬度Cover window的弯折性差，外弯时很容易发生裂缝或断裂，而弯折性好的Cover window其硬度却又很低。
 技术问题
本发明的目的在于提供一种用于显示面板的复合膜层的制作方法，用以提升复合膜层的耐弯折性能，并且在薄膜平整状态下，增强薄膜的致密性，提升其表面硬度，使薄膜于显示面板弯折时不易产生裂缝或断裂。
 技术解决方案
为实现上述目的，本发明提供一种复合膜层的制作方法，所述复合膜层适用于可弯折的显示面板，其特征在于，所述复合膜层的制作方法包含：提供一透明基材薄膜；将所述透明基材薄膜施予一预定程度的拉应力，使所述透明基材薄膜形成一形变状态；在所述形变状态下的透明基材薄膜上，形成一硬化层；及将所述形变状态下的透明基材薄膜的拉应力释放，使所述硬化层内的分子链进行收缩；其中所述透明基材薄膜的形变状态为拉伸状态或弯曲状态，所述拉伸状态为经由所述透明基材薄膜的周围向外拉伸形成，而所述弯曲状态为通过对所述透明基材薄膜弯曲形成。
在一实施例中，所述透明基材薄膜是以透明聚酰亚胺浆料所制，其特征在于，所述透明基材薄膜是以透明聚酰亚胺浆料所制，其中所述透明聚酰亚胺浆料通过溶解及流延工艺形成薄膜，并经由双向拉伸所述薄膜，再通过热处理进行亚胺化，进而形成包含所述透明聚酰亚胺的透明基材薄膜。
在另一实施例中，所述硬化层包含具有丙烯酸脂的树脂成分，其于所述透明基材薄膜为拉伸状态下进行涂布。
本发明另外提供一种复合膜层的制作方法，所述复合膜层适用于可弯折的显示面板，其特征在于，所述复合膜层的制作方法包含：提供一透明基材薄膜；将所述透明基材薄膜施予一预定程度的拉应力，使所述透明基材薄膜形成一形变状态；在所述形变状态下的透明基材薄膜上，形成一硬化层；及将所述形变状态下的透明基材薄膜的拉应力释放，使所述硬化层内的分子链进行收缩。
在一实施例中，所述透明基材薄膜的形变状态为拉伸状态，其经由所述透明基材薄膜的周围向外拉伸形成。
在另一实施例中，所述透明基材薄膜的形变状态为弯曲状态，其通过对所述透明基材薄膜弯曲形成。
在另一实施例中，，所述透明基材薄膜是以透明聚酰亚胺浆料所制，其中所述透明聚酰亚胺浆料通过溶解及流延工艺形成薄膜，并经由双向拉伸所述薄膜，再通过热处理进行亚胺化，进而形成包含所述透明聚酰亚胺的透明基材薄膜。
在另一实施例中，所述透明基材薄膜具有50微米或80微米的厚度。
在另一实施例中，所述硬化层包含具有丙烯酸脂的树脂成分，其于所述透明基材薄膜为拉伸状态下进行涂布。
在另一实施例中，所述硬化层更包含二氧化硅纳米粒子。
在另一实施例中，所述复合膜层形成于所述显示面板上，作为所述显示面板的柔性盖板。
本发明另外提供一种显示器件，包括显示面板及设于所述显示面板上的至少一复合膜层，其特征在于，所述至少一复合膜层包含：一透明基材薄膜；及一硬化层，设于所述透明基材薄膜上；其中所述透明基材薄膜于一拉应力的加载下，具有一形变状态，所述硬化层在所述透明基材薄膜处于形变状态下形成于所述透明基材薄膜上，其中所述形变状态包括拉伸状态或弯曲状态。
在一实施例中，所述显示面板包括依序叠设的衬底基板、功能层、发光膜层及偏光片，且所述显示面板上设有触摸面板，其中至少所述衬底基板、所述功能层、所述发光膜层、所述偏光片及所述触摸面板之一包含所述复合膜层。
 有益效果
本发明的复合膜层的制作方法，通过在复合薄膜制备的过程中，对所述透明基材薄膜加载或释放一预定程度的拉应力，使所述透明基材薄膜形成拉伸状态或弯曲状态，进而于形变状态下的透明基材薄膜上形成所述硬化层，用以提升复合薄膜的耐弯折性，并且在复合薄膜平整的状态下，可以增强薄膜的致密性，提升其表面硬度，有效解决传统可弯折显示面板的薄膜于弯折时容易产生裂缝或断裂的问题。
 附图说明
图1为根据本发明一较佳实施例的复合膜层的制作方法的分解示意图。
图2为图1的复合膜层的制作方法的流程图。
图3为为根据本发明另一较佳实施例的复合膜层的制作方法的分解示意图。
图4为根据本发明一较佳实施例的显示器件的示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，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发明，而非用以限制本发明。
本发明为一种复合膜层的制作方法，尤其是用于显示面板的膜层结构的制作方法，于此较佳实施例中，所述显示面板为有机发光二极管显示面板，其具有挠性，可供弯折。
图1为根据本发明一较佳实施例的复合膜层的制作方法的分解示意图。图2为图1的复合膜层的制作方法的流程图。本发明的复合膜层1的制作方法包含如图2所示的步骤：步骤S1：提供一透明基材薄膜2。具体而言，所述透明基材薄膜2是以透明聚酰亚胺(colorless polyimide, CPI)浆料所制，其中所述透明聚酰亚胺浆料通过一般溶解及流延工艺形成薄膜，亦即将透明聚酰亚胺浆料加入溶剂进行溶解，并经由双向拉伸所述薄膜，再通过热处理进行亚胺化，进而形成包含所述透明聚酰亚胺的透明基材薄膜。亦即，所述透明基材薄膜2为透明聚酰亚胺(CPI)薄膜。
步骤S2：将所述透明基材薄膜2施予一预定程度的拉应力，使所述透明基材薄膜2形成一形变状态。特别说明的是，于此较佳实施例中，所述形变状态为一拉伸状态21(如图1所示)，亦即将具有所述透明聚酰亚胺的透明基材薄膜2的周围，以预定程度的力量向外拉伸，即不会超过所述CPI薄膜的弹性形变范围内，使所述透明基材薄膜2形成拉伸状态21。所述拉伸状态21的目的在使所述透明聚酰亚胺的分子链先行拉伸。于此实施例中，所述透明基材薄膜2具有50微米或80微米的厚度，惟并不以此为限。
步骤S3：在所述形变状态下的透明基材薄膜2上，形成一包含树脂成分的硬化层3(如图1所示)。亦即，在拉伸状态下的透明基材薄膜2上，涂布有所述树脂成分。于一具体实施例中，所述树脂成分包含丙烯酸脂，或于另一具体实施例中，所述硬化层2更包含二氧化硅纳米粒子。
步骤S4：将所述形变状态下的透明基材薄膜2的拉应力释放，此时，所述透明基材薄膜2恢复平整，使所述硬化层3内的分子链进行收缩(如图1所示)。亦即，将CPI薄膜的拉应力释放掉，使所述硬化层3内的分子链进行收缩，用以增加薄膜的致密性，有利于薄膜的硬度提升。通过所述制作方法，本发明的复合膜层制备完成。
图3为为根据本发明另一较佳实施例的复合膜层的制作方法的分解示意图。图3所示的实施例，同样是通过相同于前述图1所示的复合膜层的制作，即包含所述步骤S1、步骤S2、步骤S3，及步骤S4，详细步骤内容于此不再复述。特别说明的是，图3所示的实施例与图1的实施例，二者主要区别在于：于图3的实施例中，其中步骤S2的所述形变状态为一弯曲状态22，亦即通过对所述透明基材薄膜2施予一预定程度拉应力而弯曲形成，即不会超过所述CPI薄膜的弹性形变范围内，使所述透明基材薄膜2形成弯曲状态。所述弯曲状态22的目的在使所述透明聚酰亚胺的分子链先行拉伸。
续请参阅图3，在弯曲状态22下的透明基材薄膜2上，涂布有所述树脂成分，用以形成硬化层3。于步骤S4中，将处于弯曲状态的CPI薄膜的拉应力释放掉，使所述硬化层3内的分子链进行收缩，用以增加薄膜的致密性，有利于薄膜的硬度提升。
图4为根据本发明一较佳实施例的显示器件的示意图。本发明另外提供一种显示器件4，其包括显示面板5及设于所述显示面板上的至少一复合膜层1，于此实施例中，所述显示面板5为有发光二极管显示面板。所述至少一复合膜层1包含一透明基材薄膜2及一硬化层3，其设于所述透明基材薄膜2上，其中所述透明基材薄膜2于一拉应力的加载下，具有一形变状态，所述硬化层3在所述透明基材薄膜2处于形变状态下形成于所述透明基材薄膜上。所述透明基材薄膜2为透明聚酰亚胺所制，且所述形变状态包括拉伸状态及弯曲状态。此外，所述显示面板5具有一般有机发光显示面板的结构。具体而言，如图4所示，所述显示面板5包括依序叠设的衬底基板50、具有例如阻挡层及绝缘层的功能层51、具有阳极层、发光层及阴极层的发光膜层52，及偏光片53。此外，显示面板5上可设有触摸面板6，其中至少所述衬底基板50、所述功能层51、所述发光膜层52、所述偏光片53及所述触摸面板6之一包含所述复合膜层的结构。
特别说明的是，依据本发明复合膜层的制作方法所制备的复合膜层，是形成于所述显示面板5上，亦即位于所述显示面板5的最上层，作为柔性盖板。然而，本发明复合膜层的制作方法亦可适用于所述功能层51内的偏光片或屏障层(未图示)的制作，其目的皆是在提高所述复合膜层的致密性及表面硬度。
本发明的复合膜层的制作方法，通过在复合薄膜制备的过程中，对所述透明基材薄膜加载或释放一预定程度的拉应力，使所述透明基材薄膜形成拉伸状态或弯曲状态，进而于形变状态下的透明基材薄膜上形成所述硬化层，用以提升复合薄膜的耐弯折性，并且在复合薄膜平整的状态下，可以增强薄膜的致密性，提升其表面硬度，有效解决传统可弯折显示面板的薄膜于弯折时容易产生裂缝或断裂的问题。
综上所述，虽然本发明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发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (13)

  1. 一种复合膜层的制作方法，所述复合膜层适用于可弯折的显示面板，其特征在于，所述复合膜层的制作方法包含：
    提供一透明基材薄膜；
    将所述透明基材薄膜施予一预定程度的拉应力，使所述透明基材薄膜形成一形变状态；
    在所述形变状态下的透明基材薄膜上，形成一硬化层；及
    将所述形变状态下的透明基材薄膜的拉应力释放，使所述硬化层内的分子链进行收缩；
    其中所述透明基材薄膜的形变状态为拉伸状态或弯曲状态，所述拉伸状态为经由所述透明基材薄膜的周围向外拉伸形成，而所述弯曲状态为通过对所述透明基材薄膜弯曲形成。
  2. 如权利要求1的复合膜层的制作方法，其特征在于，所述透明基材薄膜是以透明聚酰亚胺浆料所制，其特征在于，所述透明基材薄膜是以透明聚酰亚胺浆料所制，其中所述透明聚酰亚胺浆料通过溶解及流延工艺形成薄膜，并经由双向拉伸所述薄膜，再通过热处理进行亚胺化，进而形成包含所述透明聚酰亚胺的透明基材薄膜。
  3. 如权利要求1的复合膜层的制作方法，其特征在于，所述硬化层包含具有丙烯酸脂的树脂成分，其于所述透明基材薄膜为拉伸状态下进行涂布。
  4. 一种复合膜层的制作方法，所述复合膜层适用于可弯折的显示面板，其特征在于，所述复合膜层的制作方法包含：
    提供一透明基材薄膜；
    将所述透明基材薄膜施予一预定程度的拉应力，使所述透明基材薄膜形成一形变状态；
    在所述形变状态下的透明基材薄膜上，形成一硬化层；及
    将所述形变状态下的透明基材薄膜的拉应力释放，使所述硬化层内的分子链进行收缩。
  5. 如权利要求4的复合膜层的制作方法，其特征在于，所述透明基材薄膜的形变状态为拉伸状态，其经由所述透明基材薄膜的周围向外拉伸形成。
  6. 如权利要求4的复合膜层的制作方法，其特征在于，所述透明基材薄膜的形变状态为弯曲状态，其通过对所述透明基材薄膜弯曲形成。
  7. 如权利要求4的复合膜层的制作方法，其特征在于，所述透明基材薄膜是以透明聚酰亚胺浆料所制，其中所述透明聚酰亚胺浆料通过溶解及流延工艺形成薄膜，并经由双向拉伸所述薄膜，再通过热处理进行亚胺化，进而形成包含所述透明聚酰亚胺的透明基材薄膜。
  8. 如权利要求4的复合膜层的制作方法，其特征在于，所述透明基材薄膜具有50微米或80微米的厚度。
  9. 如权利要求4的复合膜层的制作方法，其特征在于，所述硬化层包含具有丙烯酸脂的树脂成分，其于所述透明基材薄膜为拉伸状态下进行涂布。
  10. 如权利要求9的复合膜层的制作方法，其特征在于，所述硬化层更包含二氧化硅纳米粒子。
  11. 如权利要求4的复合膜层的制作方法，其特征在于，所述复合膜层形成于所述显示面板上，作为所述显示面板的柔性盖板。
  12. 一种显示器件，包括显示面板及设于所述显示面板上的至少一复合膜层，其特征在于，所述至少一复合膜层包含：
    一透明基材薄膜；及
    一硬化层，设于所述透明基材薄膜上；
    其中所述透明基材薄膜于一拉应力的加载下，具有一形变状态，所述硬化层在所述透明基材薄膜处于形变状态下形成于所述透明基材薄膜上，其中所述形变状态包括拉伸状态或弯曲状态。
  13. 如权利要求12的显示器件，其特征在于，所述显示面板包括依序叠设的衬底基板、功能层、发光膜层及偏光片，且所述显示面板上设有触摸面板，其中至少所述衬底基板、所述功能层、所述发光膜层、所述偏光片及所述触摸面板之一包含所述复合膜层。
PCT/CN2019/076058 2018-12-12 2019-02-25 复合膜层的制作方法及显示器件 WO2020118905A1 (zh)

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