WO2019148845A1 - 基板保护膜及其制作方法、基板及显示面板的制作方法 - Google Patents

基板保护膜及其制作方法、基板及显示面板的制作方法 Download PDF

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Publication number
WO2019148845A1
WO2019148845A1 PCT/CN2018/104604 CN2018104604W WO2019148845A1 WO 2019148845 A1 WO2019148845 A1 WO 2019148845A1 CN 2018104604 W CN2018104604 W CN 2018104604W WO 2019148845 A1 WO2019148845 A1 WO 2019148845A1
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WIPO (PCT)
Prior art keywords
substrate
protective film
region
film layer
panel
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PCT/CN2018/104604
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English (en)
French (fr)
Inventor
张瑜
闫灏
易海涛
汪正红
蒋志亮
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/333,818 priority Critical patent/US11733433B2/en
Publication of WO2019148845A1 publication Critical patent/WO2019148845A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a substrate protective film, a method of fabricating the same, a substrate, and a method of fabricating the display panel.
  • the present disclosure provides a protective film suitable for a substrate, the substrate includes a plurality of panel regions, the plurality of panel regions correspondingly forming a plurality of display panels, each of the panel regions having a first region, the first The region corresponds to a bent region of the display panel, wherein the protective film includes a full film layer, and a hollow portion disposed in the entire film layer, the size of the entire film layer and the size of the substrate Matching, when the protective film is attached to the substrate, the hollow portion is for exposing the first region in each of the panel regions.
  • the hollow portion is a plurality, and each of the hollow portions corresponds to the first region of each of the panel regions.
  • an orthographic projection of each of the hollow portions on the substrate completely covers the first region corresponding thereto; and each The contour of the orthographic projection of the hollow portion on the substrate is larger than the contour size of the first region.
  • an orthographic projection of each of the hollowed portions on the substrate completely coincides with a contour of the first region.
  • a plurality of the panel regions are arranged in a matrix, and the first region of the same row or the panel region of the same column can form a continuous strip region; the hollow portions are distributed in a matrix, each of the The hollow portion has a strip shape, and when the protective film is attached to the substrate, the hollow portion exposes the strip region in a one-to-one correspondence.
  • an orthographic projection of each of the hollow portions on the substrate completely covers the strip-shaped region corresponding thereto; and, each The size of the orthographic projection of the hollow portion on the substrate is greater than the contour size of the strip region.
  • the orthographic projection of each of the hollow portions on the substrate completely coincides with the contour of the strip region corresponding thereto.
  • the entire film layer has a dimension l in the longitudinal direction corresponding to the strip-shaped region, each of the hollow portions has a dimension in the length direction of m, and l is equal to m.
  • the protective film further includes a first protective film that completely covers the attachment surface of the entire film layer.
  • the substrate protection film further includes a second protective film that completely covers a surface of the entire film layer that faces away from the attachment surface.
  • the present disclosure further provides a method for fabricating a protective film suitable for a substrate, the substrate comprising a plurality of panel regions, the plurality of panel regions correspondingly forming a plurality of display panels, each of the panel regions having a first region, The first area corresponds to a bending area of the display panel, wherein the manufacturing method comprises: providing a whole film layer, the size of the whole film layer matching the size of the substrate; A hollow portion is formed in the film layer, and the hollow portion is for exposing the first region in each of the panel regions when the protective film is attached to the substrate.
  • the manufacturing method further includes forming a first protective film on the attaching surface of the entire film layer, the first protective film completely covering the attaching surface.
  • the manufacturing method further includes: forming a second protective film on a surface of the entire film layer facing away from the attaching surface, the second protective film completely covering away from the attaching surface s surface.
  • a blanking portion is formed in the entire film layer by a punching method, the punching method comprising: providing a mold, the mold including an occlusion region and a non-occlusion region; placing the mold at The entire film layer is punched through the non-occlusion region of the mold by using a punching tool to remove a portion of the entire film layer corresponding to the non-occlusion region to form The hollowed out portion.
  • the present disclosure also provides a substrate on which a plurality of display panels are disposed, and a protective film is disposed on a surface of the substrate facing away from the display panel, and the protective film is protected by the substrate provided by the present disclosure. membrane.
  • the present disclosure further provides a method for fabricating a display panel, comprising: providing a substrate, the substrate includes a plurality of panel regions; and forming a plurality of display panels corresponding to each of the panel regions of the substrate; Wherein each of the panel regions has a first region, the first region corresponding to a bending region of the display panel; a protective film suitable for the substrate is provided, the protective film comprising a whole film layer, The size of the entire film layer is matched with the size of the substrate; a hollow portion is formed in the entire film layer, and when the protective film is attached to the substrate, the hollow portion is used to expose each a first region in the panel region; attaching the entire film layer to a surface of the substrate facing away from the display panel; and cutting the substrate to form a plurality of display panels independent of each other.
  • FIG. 1 is a structural view of a protective film in the related art
  • FIG. 2 is a structural view of a substrate protective film according to a first embodiment of the present disclosure
  • FIG. 3 is a cross-sectional view of a substrate protective film according to a first embodiment of the present disclosure
  • FIG. 4 is a structural diagram of a substrate protective film according to a second embodiment of the present disclosure.
  • the first mode is as shown in FIG. 1, which is a small-sized protective film 1 corresponding to the display panel, and the protective film 1 has a hollow portion 11, and the hollow portion 11 is When the protective film 1 is attached to the display panel, it corresponds to the bent region.
  • the second way is to attach a small-sized protective film to the display panel, and then burn the area of the protective film corresponding to the bent region to remove.
  • the protective films in the above two methods are all small in size, they need to be attached one by one to the divided display panels, resulting in more bonding equipment and lower attachment efficiency.
  • the removal of the protective film is incomplete, resulting in wrinkles of the flexible substrate when bent, thereby causing breakage of the trace.
  • a first embodiment of the present disclosure provides a protective film (substrate protective film) suitable for a substrate, which is protected by a substrate by attaching the protective film to the back surface of the substrate.
  • the substrate is, for example, a flexible substrate.
  • the substrate is usually of a large size, and by cutting a large-sized substrate, a plurality of independent small-sized display panels can be obtained.
  • the substrate includes a plurality of panel regions, and the plurality of panel regions correspondingly form a plurality of display panels; and each of the panel regions has a first region corresponding to the bent region of the display panel.
  • a plurality of panel regions are arranged in a matrix.
  • the matrix arrangement means that the rows and columns are arranged.
  • the cutting can be, but is not limited to, using a laser cutting method.
  • the substrate protective film includes a full film layer 2 having a size that matches the size of the substrate.
  • the so-called matching means that the shape and size of the entire film layer 2 are substantially the same as the shape and size of the substrate.
  • the broken line in Fig. 2 indicates the position of the corresponding substrate cutting line of the substrate protective film. The substrate is divided by the substrate cutting line to form panel regions of respective small sizes.
  • a hollow portion 21 is provided in the entire film layer 2, and the hollow portion 21 is used to expose the first region in each panel region A when the substrate protective film is attached to the substrate.
  • the entire film layer 2 can be attached to the uncut large-sized substrate first, so that the attachment efficiency can be improved.
  • the hollowed-out portion 21 in the entire film layer 2 before the attachment it is possible to avoid the presence of the protective film in the bent region, so that the wrinkles of the substrate at the time of bending can be avoided.
  • each hollow portion 21 is in one-to-one correspondence with the first one of the panel regions.
  • the orthographic projection contour of each hollow portion 21 on the substrate coincides with the contour of the corresponding bending region. In this way, it is ensured that the protective film is not present in the bent region, so that the wrinkles of the substrate when bent can be avoided.
  • the orthographic projection of each hollow portion 21 on the substrate can completely cover the first region corresponding thereto, and the size of the orthographic projection of each hollow portion 21 on the substrate is larger than the first. The outline size of the area.
  • the outline size here refers to at least one of the size parameters of the specific outline. Taking a rectangle as an example, the outline size is a long side size and/or a short side size of the rectangle.
  • the substrate protective film further includes a first protective film 3 that completely covers the attaching surface of the entire film layer 2.
  • the first protective film 3 completely covers the lower surface of the entire film layer 2 for protecting the attachment surface of the entire film layer 2 before being attached.
  • the attachment surface refers to the surface of the entire film layer 2 that is bonded to the substrate.
  • the substrate protective film further includes a second protective film 4 that completely covers the surface of the entire film layer 2 facing away from the above-mentioned attaching surface.
  • a second protective film 4 that completely covers the surface of the entire film layer 2 facing away from the above-mentioned attaching surface.
  • the substrate protective film provided by the second embodiment of the present disclosure is substantially the same as the substrate protective film provided by the first embodiment described above, except that the structure of the hollow portion is different.
  • a plurality of panel areas are arranged in a matrix, and the first area in the same row or the panel area of the same column can form a continuous strip area.
  • a plurality of hollow portions 22 are disposed in the entire film layer 2, and are arranged in a matrix, and each of the hollow portions 22 has a strip shape.
  • the hollow portions 22 are exposed in a one-to-one correspondence.
  • Strip area That is, one hollow portion 22 can expose a strip region composed of the first region in the panel area of the same row (or the same column). In this way, the structure of the hollow portion 22 can be simplified, so that the process difficulty can be reduced.
  • the orthographic projections of each of the hollow portions 22 on the substrate coincide with the contours of the strip regions (bending regions) in a row (or column) of panel regions corresponding thereto. In this way, it is ensured that the protective film is not present in the bent region, so that the wrinkles of the substrate when bent can be avoided.
  • the orthographic projection of each hollow portion on the substrate completely covers the corresponding strip-shaped region; and each hollow portion is on the substrate.
  • the size of the orthographic projection on the upper side is larger than the outline size of the strip area.
  • the size of the entire film layer 2 corresponding to the longitudinal direction of the strip-shaped region is 1, and the dimension of each hollow portion 22 in the longitudinal direction is m, and Equal to m. In this way, the structure of the hollow portion 22 can be simplified, so that the process difficulty can be reduced.
  • the present disclosure further provides a method for fabricating a protective film suitable for a substrate, the substrate comprising a plurality of panel regions, the plurality of panel regions correspondingly forming a plurality of display panels, each panel region having a first region The first area corresponds to a bending area of the display panel, and each panel area has a bending area.
  • the manufacturing method comprises: providing a whole film layer 2, the size of the whole film layer 2 The size of the substrate is matched; a hollow portion 21 is formed in the entire film layer 2, and the hollow portion 21 is used to expose the first region in each panel region when the substrate protective film is attached to the substrate.
  • the entire film layer 2 can be attached to the uncut large-sized substrate first, so that the attachment efficiency can be improved.
  • the hollowed-out portion 21 in the entire film layer 2 before the attachment it is possible to avoid the presence of the protective film in the bent region, so that the wrinkles of the substrate at the time of bending can be avoided.
  • the hollow portion 21 is formed in the entire film layer 2 by a punching method.
  • the punching method includes: providing a mold including an occlusion area and a non-occlusion area; placing the mold on the entire film layer 2; and punching the entire film layer through the non-occlusion area of the mold using a punching tool To remove the portion of the corresponding non-occlusion region of the entire film layer, the hollow portion 21 is formed.
  • the occlusion area of the above mold covers the entire film layer 2, and the non-shielding area does not cover the entire film layer 2.
  • the fabrication of the hollow portion 21 can be accomplished by die-cutting the portion of the entire film layer 22 that is not covered by the mold, so that the fabrication of the plurality of hollow portions 21 can be accomplished in a single process.
  • the manufacturing method further includes: forming a first protective film 3 on the attaching surface of the entire film layer 2, the first protective film 3 completely covering the attaching surface, and is used for the whole layer
  • the film 2 is protected from the attachment surface before it is attached.
  • the attachment surface refers to the surface of the entire film layer 2 that is bonded to the substrate.
  • the manufacturing method further includes: forming a second protective film 4 on the surface of the entire film layer 2 facing away from the attaching surface, the second protective film 4 completely covering the surface away from the attaching surface surface.
  • the attachment surface of the entire film layer 2 is adhered to the substrate, and the second protective film 4 is located on the side of the entire film layer 2 away from the substrate for protection.
  • the second protective film 4 can be removed depending on the needs of the specific process, and only the entire film layer 2 is retained.
  • the present disclosure further provides a substrate on which a plurality of display panels are disposed, and a surface of the substrate facing away from the display panel is provided with a protective film, and the protective film is protected by the substrate provided by the present disclosure. membrane.
  • the substrate provided by the present disclosure by providing the above-mentioned protective film provided by the present disclosure, can not only improve the attaching efficiency, but also avoid the presence of a protective film in the bent region, thereby preventing wrinkles from occurring when the flexible substrate is bent.
  • the present disclosure further provides a method for fabricating a display panel, comprising: providing a substrate, the substrate includes a plurality of panel regions; and forming a plurality of displays corresponding to respective panel regions of the substrate a panel; wherein each panel region has a first region corresponding to the bent region of the display panel; and a protective film suitable for the substrate is provided, the protective film comprising a whole film layer 2, the whole film
  • the size of the layer 2 matches the size of the substrate; a hollow portion 21 is formed in the entire film layer 2, and the hollow portion 21 is used to expose the first region in each panel region when the substrate protective film is attached to the substrate,
  • the entire film layer 2 is attached to the surface of the substrate facing away from the display panel; the substrate is cut to form a plurality of display panels independent of each other.
  • the substrate protective film includes a whole film layer, and a hollow portion disposed in the entire film layer,
  • the size of the entire film layer matches the size of the substrate; the hollow portion is for exposing the first region in each panel region when the substrate protective film is attached to the substrate.
  • the entire film layer can be attached to the uncut large-sized substrate, and then the substrate can be cut, thereby improving the adhesion efficiency.
  • by providing a hollowed-out portion in the entire film layer before attaching it is possible to avoid the presence of a protective film in the bent region, thereby avoiding wrinkles of the substrate when bent.

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Abstract

一种基板保护膜及其制作方法、基板及显示面板的制作方法，基板包括多个面板区域，对应形成多个显示面板，每个面板区域中具有第一区，其对应显示面板的弯折区域。基板保护膜包括整层膜层（2），以及镂空部分（21），整层膜层（2）的尺寸与基板的尺寸相匹配，镂空部分（21）用于在基板保护膜贴附在基板上时，暴露各个面板区域中的第一区。

Description

基板保护膜及其制作方法、基板及显示面板的制作方法 技术领域
本公开涉及显示技术领域，具体地，涉及一种基板保护膜及其制作方法、基板及显示面板的制作方法。
背景技术
随着OLED技术的深入，全面屏技术正在成为发展趋势，而为了实现全面屏，Bending(弯折)技术是关键技术。为了保护柔性基板，通常在柔性基板的背面贴附保护膜。但是，由于保护膜均是小尺寸，需要逐个贴附在分割后的显示面板上，导致所需贴合设备较多，贴附效率较低。还存在去除保护膜不彻底的问题，导致柔性基板在弯折时出现褶皱，从而引起走线的断裂。
公开内容
本公开提供一种适用于基板的保护膜，所述基板包括多个面板区域，所述多个面板区域对应形成多个显示面板，每个所述面板区域中具有第一区，所述第一区对应于显示面板的弯折区域，其中，所述保护膜包括整层膜层，以及在所述整层膜层中设置的镂空部分，所述整层膜层的尺寸与所述基板的尺寸相匹配，在所述保护膜贴附在所述基板上时，所述镂空部分用于暴露各个所述面板区域中的第一区。
在一实施方式中，所述镂空部分为多个，且各个所述镂空部分与各个所述面板区域中的第一区一一对应。
在一实施方式中，在所述保护膜贴附在所述基板上时，每个所述镂空部分在所述基板上的正投影完全覆盖与之对应的所述第一区；并且，每个所述镂空部分在所述基板上的正投影的轮廓尺寸大于所述第一区的轮廓尺寸。
在一实施方式中，在所述保护膜贴附在所述基板上时，每个所 述镂空部分在所述基板上的正投影轮廓与所述第一区的轮廓完全重合。
在一实施方式中，多个所述面板区域呈矩阵排布，同一行或者同一列的所述面板区域中的第一区能够构成连续的条形区域；所述镂空部分呈矩阵分布，各个所述镂空部分呈条形，且在所述保护膜贴附在所述基板上时，所述镂空部分一一对应地暴露所述条形区域。
在一实施方式中，在所述保护膜贴附在所述基板上时，每个所述镂空部分在所述基板上的正投影完全覆盖与之对应的所述条形区域；并且，每个所述镂空部分在所述基板上的正投影轮廓的尺寸大于所述条形区域的轮廓尺寸。
在一实施方式中，在所述保护膜贴附在所述基板上时，每个所述镂空部分在所述基板上的正投影轮廓和与之对应的所述条形区域的轮廓完全重合。
在一实施方式中，所述整层膜层对应所述条形区域的长度方向上的尺寸为l，各个所述镂空部分在长度方向上的尺寸为m，且l等于m。
在一实施方式中，所述保护膜还包括第一保护膜，所述第一保护膜完全覆盖所述整层膜层的贴附面。
在一实施方式中，所述基板保护膜还包括第二保护膜，所述第二保护膜完全覆盖所述整层膜层的背离所述贴附面的表面。
本公开还提供一种适用于基板的保护膜的制作方法，所述基板包括多个面板区域，所述多个面板区域对应形成多个显示面板，每个所述面板区域中具有第一区，所述第一区对应于显示面板的弯折区域，其中，所述制作方法包括：提供一整层膜层，所述整层膜层的尺寸与所述基板的尺寸相匹配；在所述整层膜层中形成镂空部分，在所述保护膜贴附在所述基板上时，所述镂空部分用于暴露各个所述面板区域中的第一区。
在一实施方式中，所述制作方法还包括：在所述整层膜层的贴附面上形成第一保护膜，所述第一保护膜完全覆盖所述贴附面。
在一实施方式中，所述制作方法还包括：在所述整层膜层的背 离所述贴附面的表面上形成第二保护膜，所述第二保护膜完全覆盖背离所述贴附面的表面。
在一实施方式中，采用冲切方法在所述整层膜层中形成镂空部分，所述冲切方法包括：提供一模具，所述模具包括遮挡区域和非遮挡区域；将所述模具放置在所述整层膜层上；使用冲切工具经由所述模具的非遮挡区域对所述整层膜层进行冲切，以去除所述整层膜层的对应所述非遮挡区域的部分，形成所述镂空部分。
本公开还提供一种基板，在所述基板上设置有多个显示面板，且在所述基板的背离所述显示面板的表面设置有保护膜，所述保护膜采用本公开提供的上述基板保护膜。
作为另一个技术方案，本公开还提供一种显示面板的制作方法，包括：提供一基板，所述基板包括多个面板区域；在所述基板的各个所述面板区域对应形成多个显示面板；其中，每个所述面板区域中具有第一区，所述第一区对应于显示面板的弯折区域；提供一适用于所述基板的保护膜，所述保护膜包括整层膜层，所述整层膜层的尺寸与所述基板的尺寸相匹配；在所述整层膜层中形成镂空部分，在所述保护膜贴附在所述基板上时，所述镂空部分用于暴露各个所述面板区域中的第一区；将所述整层膜层贴附在所述基板的背离显示面板的表面；以及，切割所述基板，以形成相互独立的多个显示面板。
附图说明
图1为相关技术中的保护膜的结构图；
图2为本公开第一实施例提供的基板保护膜的结构图；
图3为本公开第一实施例提供的基板保护膜的剖视图；
图4为本公开第二实施例提供的基板保护膜的结构图。
具体实施方式
为使本领域的技术人员更好地理解本公开的技术方案，下面结合附图来对本公开提供的基板保护膜及其制作方法、基板及显示面板的制作方法进行详细描述。
目前，通常将大尺寸的柔性基板切割为多个小尺寸的显示面板。贴附保护膜的方式主要有两种，第一种方式如图1所示，是采用与显示面板相对应的小尺寸保护膜1，且该保护膜1具有镂空部分11，该镂空部分11在保护膜1贴附在显示面板上时，与弯折区域相对应。第二种方式是将小尺寸保护膜贴附在显示面板上，然后对保护膜的与弯折区域相对应的区域进行灼烧以去除。但是，由于上述两种方式中的保护膜均是小尺寸，需要逐个贴附在分割后的显示面板上，导致所需贴合设备较多，贴附效率较低。而且，对于上述第二种方式，还存在去除保护膜不彻底的问题，导致柔性基板在弯折时出现褶皱，从而引起走线的断裂。
请参阅图2，本公开第一实施例提供一种的适用于基板的保护膜(基板保护膜)，通过将该保护膜贴附在基板背面，来起到保护基板的作用。基板例如为柔性基板。基板通常为大尺寸，通过将大尺寸的基板进行切割，可以获得多个独立的小尺寸显示面板。具体地，基板包括多个面板区域，多个面板区域对应形成多个显示面板；并且，每个面板区域中具有第一区，该第一区对应显示面板的弯折区域。在本实施例中，多个面板区域呈矩阵排布。这里，呈矩阵排布是指以行和列的形式进行排列。另外，切割可以但不限于采用激光切割方式。
基板保护膜包括整层膜层2，该整层膜层2的尺寸与基板的尺寸相匹配。所谓相匹配，是指整层膜层2的形状和尺寸与基板的形状和尺寸基本一致。图2中的虚线表示为基板保护膜的对应基板切割线的位置。由基板切割线将基板划分形成各个小尺寸的面板区域。
并且，在整层膜层2中设置有镂空部分21，在基板保护膜贴附在基板上时，该镂空部分21用于暴露各个面板区域A中的上述第一区。
通过使整层膜层2的尺寸与基板的尺寸相匹配，可以先将整层膜层2贴附在未切割的大尺寸基板上，从而可以提高贴附效率。同时，通过在贴附之前，在整层膜层2中设置有镂空部分21，可以避免在弯折区域存在保护膜，从而可以避免基板在弯折时出现褶皱。
在本实施例中，镂空部分21为多个，且各个镂空部分21与各 个面板区域中的第一区一一对应。可选的，在基板保护膜贴附在基板上时，每个镂空部分21在基板上的正投影轮廓和与之对应的弯折区域的轮廓重合。这样，可以确保在弯折区域中不存在保护膜，从而可以避免基板在弯折时出现褶皱。当然，在实际应用中，也可以使每个镂空部分21在基板上的正投影完全覆盖与之对应的第一区，并使每个镂空部分21在基板上的正投影轮廓的尺寸大于第一区的轮廓尺寸。由此，即使在形成镂空部分的切割工艺中存在一定的公差，也可以保证切割后的整层膜层不会覆盖面板区域中的第一区。这里的轮廓尺寸是指具体轮廓的尺寸参数的至少之一。以矩形为例，轮廓尺寸为矩形的长边尺寸和/或短边尺寸。
在本实施例中，如图3所示，基板保护膜还包括第一保护膜3，该第一保护膜3完全覆盖整层膜层2的贴附面。如图3所示，第一保护膜3完全覆盖整层膜层2的下表面，用于在整层膜层2贴附前，保护其贴附面。所谓贴附面，是指整层膜层2的用于与基板相贴合的表面。
在本实施例中，基板保护膜还包括第二保护膜4，该第二保护膜4完全覆盖整层膜层2的背离上述贴附面的表面。在整层膜层2贴附在基板上时，整层膜层2的贴附面与基板相贴合，而第二保护膜4位于整层膜层2的远离基板的一侧，用于保护整层膜层2。并且，根据具体工艺的需要，可以将第二保护膜4去除，而仅保留整层膜层2。
本公开第二实施例提供的基板保护膜，其与上述第一实施例提供的基板保护膜基本相同，除了镂空部分的结构不同。
具体地，请参阅图4，多个面板区域呈矩阵排布，同一行或者同一列的面板区域中的第一区能够构成连续的条形区域。在整层膜层2中设置有多个镂空部分22，且呈矩阵分布，并且各个镂空部分22呈条形，在基板保护膜贴附在基板上时，该镂空部分22一一对应地暴露上述条形区域。也就是说，一个镂空部分22能够暴露由同一行(或同一列)的面板区域中的第一区构成的条形区域。这样，可以简化镂空部分22的结构，从而可以降低工艺难度。
可选的，每个镂空部分22在基板上的正投影轮廓和与之对应的 一行(或一列)面板区域中的条形区域(弯折区域)的轮廓重合。这样，可以确保在弯折区域中不存在保护膜，从而可以避免基板在弯折时出现褶皱。当然，在实际应用中，也可以在基板保护膜贴附在基板上时，使每个镂空部分在基板上的正投影完全覆盖与之对应的条形区域；并且，使每个镂空部分在基板上的正投影轮廓的尺寸大于条形区域的轮廓尺寸。从而，可以降低工艺难度，也可以消除工艺中公差所带来的尺寸影响。
在本实施例中，整层膜层2对应条形区域的长度方向上(如图4所示的左右方向)的尺寸为l，每个镂空部分22在长度方向上的尺寸为m，且l等于m。这样，可以简化镂空部分22的结构，从而可以降低工艺难度。
作为另一个技术方案，本公开还提供一种适用于基板的保护膜的制作方法，该基板包括多个面板区域，多个面板区域对应形成多个显示面板，每个面板区域中具有第一区，该第一区对应于显示面板的弯折区域，每个面板区域中具有弯折区域，如图2所示，制作方法包括：提供一整层膜层2，该整层膜层2的尺寸与基板的尺寸相匹配；在整层膜层2中形成镂空部分21，在基板保护膜贴附在基板上时，该镂空部分21用于暴露各个面板区域中的第一区。
通过使整层膜层2的尺寸与基板的尺寸相匹配，可以先将整层膜层2贴附在未切割的大尺寸基板上，从而可以提高贴附效率。同时，通过在贴附之前，在整层膜层2中设置有镂空部分21，可以避免在弯折区域存在保护膜，从而可以避免基板在弯折时出现褶皱。
可选的，采用冲切方法在整层膜层2中形成镂空部分21。该冲切方法包括：提供一模具，该模具包括遮挡区域和非遮挡区域；将模具放置在整层膜层2上；使用冲切工具经由模具的非遮挡区域对所整层膜层进行冲切，以去除所整层膜层的对应非遮挡区域的部分，形成镂空部分21。
容易理解，上述模具的遮挡区域覆盖整层膜层2，而非遮挡区域未覆盖整层膜层2。通过冲切整层膜层22的未被模具覆盖的部分，即可完成镂空部分21的制作，从而可以采用一次工艺完成多个镂空 部分21的制作。
可选的，如图3所示，制作方法还包括：在整层膜层2的贴附面上形成第一保护膜3，该第一保护膜3完全覆盖贴附面，用于在整层膜层2贴附前，保护其贴附面。所谓贴附面，是指整层膜层2的用于与基板相贴合的表面。
可选的，如图3所示，制作方法还包括：在整层膜层2的背离上述贴附面的表面上形成第二保护膜4，该第二保护膜4完全覆盖背离贴附面的表面。
在整层膜层2贴附在基板上时，整层膜层2的贴附面与基板相贴合，而第二保护膜4位于整层膜层2的远离基板的一侧，用于保护整层膜层2。并且，根据具体工艺的需要，可以将第二保护膜4去除，而仅保留整层膜层2。
作为另一个技术方案，本公开还提供一种基板，在基板上设置有多个显示面板，且在该基板的背离显示面板的表面设置有保护膜，该保护膜采用本公开提供的上述基板保护膜。
本公开提供的基板，其通过设置本公开提供的上述保护膜，不仅可以提高贴附效率，而且还可以避免在弯折区域存在保护膜，从而可以避免柔性基板在弯折时出现褶皱。
作为另一个技术方案，如图2所示，本公开还提供一种显示面板的制作方法，其包括：提供一基板，该基板包括多个面板区域；在基板的各个面板区域对应形成多个显示面板；其中，每个面板区域中具有第一区，该第一区对应于显示面板的弯折区域；提供一适用于基板的保护膜，该保护膜包括整层膜层2，该整层膜层2的尺寸与基板的尺寸相匹配；在整层膜层2中形成镂空部分21，在基板保护膜贴附在基板上时，该镂空部分21用于暴露各个面板区域中的第一区，将整层膜层2贴附在基板的背离显示面板的表面；切割基板，以形成相互独立的多个显示面板。
综上所述，本公开提供的基板保护膜及其制作方法、基板及显示面板的制作方法的技术方案中，基板保护膜包括整层膜层，以及在整层膜层中设置的镂空部分，该整层膜层的尺寸与基板的尺寸相匹配； 镂空部分用于在基板保护膜贴附在基板上时，暴露各个面板区域中的第一区。通过使整层膜层的尺寸与基板的尺寸相匹配，可以先将整层膜层贴附在未切割的大尺寸基板上，然后再切割基板，从而可以提高贴附效率。同时，通过在贴附之前，在整层膜层中设置有镂空部分，可以避免在弯折区域存在保护膜，从而可以避免基板在弯折时出现褶皱。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (16)

  1. 一种适用于基板的保护膜，所述基板包括多个面板区域，所述多个面板区域对应形成多个显示面板，每个所述面板区域中具有第一区，所述第一区对应于显示面板的弯折区域，其中，
    所述保护膜包括整层膜层，以及在所述整层膜层中设置的镂空部分，所述整层膜层的尺寸与所述基板的尺寸相匹配，在所述保护膜贴附在所述基板上时，所述镂空部分用于暴露各个所述面板区域中的第一区。
  2. 根据权利要求1所述的保护膜，其中，所述镂空部分为多个，且各个所述镂空部分与各个所述面板区域中的第一区一一对应。
  3. 根据权利要求2所述的保护膜，其中，在所述保护膜贴附在所述基板上时，每个所述镂空部分在所述基板上的正投影完全覆盖与之对应的所述第一区；并且，每个所述镂空部分在所述基板上的正投影的轮廓尺寸大于所述第一区的轮廓尺寸。
  4. 根据权利要求2所述的保护膜，其中，在所述保护膜贴附在所述基板上时，每个所述镂空部分在所述基板上的正投影轮廓与所述第一区的轮廓完全重合。
  5. 根据权利要求1所述的保护膜，其中，多个所述面板区域呈矩阵排布，同一行或者同一列的所述面板区域中的第一区能够构成连续的条形区域；
    所述镂空部分呈矩阵分布，各个所述镂空部分呈条形，且在所述保护膜贴附在所述基板上时，所述镂空部分一一对应地暴露所述条形区域。
  6. 根据权利要求5所述的保护膜，其中，在所述保护膜贴附在 所述基板上时，每个所述镂空部分在所述基板上的正投影完全覆盖与之对应的所述条形区域；并且，每个所述镂空部分在所述基板上的正投影轮廓的尺寸大于所述条形区域的轮廓尺寸。
  7. 根据权利要求5所述的保护膜，其中，在所述保护膜贴附在所述基板上时，每个所述镂空部分在所述基板上的正投影轮廓和与之对应的所述条形区域的轮廓完全重合。
  8. 根据权利要求5所述的保护膜，其中，所述整层膜层对应所述条形区域的长度方向上的尺寸为1，各个所述镂空部分在长度方向上的尺寸为m，且1等于m。
  9. 根据权利要求1-8任意一项所述的保护膜，其中，所述保护膜还包括第一保护膜，所述第一保护膜完全覆盖所述整层膜层的贴附面。
  10. 根据权利要求1-8任意一项所述的保护膜，其中，所述基板保护膜还包括第二保护膜，所述第二保护膜完全覆盖所述整层膜层的背离所述贴附面的表面。
  11. 一种适用于基板的保护膜的制作方法，所述基板包括多个面板区域，所述多个面板区域对应形成多个显示面板，每个所述面板区域中具有第一区，所述第一区对应于显示面板的弯折区域，其中，所述制作方法包括：
    提供一整层膜层，所述整层膜层的尺寸与所述基板的尺寸相匹配；
    在所述整层膜层中形成镂空部分，在所述保护膜贴附在所述基板上时，所述镂空部分用于暴露各个所述面板区域中的第一区。
  12. 根据权利要求11所述的制作方法，其中，所述制作方法还 包括：
    在所述整层膜层的贴附面上形成第一保护膜，所述第一保护膜完全覆盖所述贴附面。
  13. 根据权利要求11所述的制作方法，其中，所述制作方法还包括：
    在所述整层膜层的背离所述贴附面的表面上形成第二保护膜，所述第二保护膜完全覆盖背离所述贴附面的表面。
  14. 根据权利要求11所述的制作方法，其中，采用冲切方法在所述整层膜层中形成镂空部分，所述冲切方法包括：
    提供一模具，所述模具包括遮挡区域和非遮挡区域；
    将所述模具放置在所述整层膜层上；
    使用冲切工具经由所述模具的非遮挡区域对所述整层膜层进行冲切，以去除所述整层膜层的对应所述非遮挡区域的部分，形成所述镂空部分。
  15. 一种基板，在所述基板上设置有多个显示面板，且在所述基板的背离所述显示面板的表面设置有保护膜，其中，所述保护膜采用权利要求1-10任意一项所述的保护膜。
  16. 一种显示面板的制作方法，包括：
    提供一基板，所述基板包括多个面板区域；
    在所述基板的各个所述面板区域对应形成多个显示面板；其中，每个所述面板区域中具有第一区，所述第一区对应于显示面板的弯折区域；
    提供一适用于所述基板的保护膜，所述保护膜包括整层膜层，所述整层膜层的尺寸与所述基板的尺寸相匹配；
    在所述整层膜层中形成镂空部分，在所述保护膜贴附在所述基板上时，所述镂空部分用于暴露各个所述面板区域中的第一区； 将所述整层膜层贴附在所述基板的背离显示面板的表面；以及切割所述基板，以形成相互独立的多个显示面板。
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