WO2020015395A1 - 显示面板、显示装置及显示面板的制作方法 - Google Patents

显示面板、显示装置及显示面板的制作方法 Download PDF

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Publication number
WO2020015395A1
WO2020015395A1 PCT/CN2019/082085 CN2019082085W WO2020015395A1 WO 2020015395 A1 WO2020015395 A1 WO 2020015395A1 CN 2019082085 W CN2019082085 W CN 2019082085W WO 2020015395 A1 WO2020015395 A1 WO 2020015395A1
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WIPO (PCT)
Prior art keywords
area
curing
region
display panel
display
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PCT/CN2019/082085
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English (en)
French (fr)
Inventor
贾智帅
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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
Priority to US16/739,139 priority Critical patent/US11315446B2/en
Publication of WO2020015395A1 publication Critical patent/WO2020015395A1/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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/851—Division of substrate

Definitions

  • the present application relates to the field of display, and in particular, to a display panel, a display device, and a method for manufacturing a display panel.
  • Flexible screens usually have poor display problems caused by folding.
  • the stress generated after the flexible screen body is folded affects the reliability of the display module structure.
  • a large bending stress is generated, which easily causes damage to the flexible screen body.
  • the present application provides a display panel, a display device, and a method for manufacturing a display panel, which can improve the stability of the display panel.
  • This application provides a display panel, which includes:
  • a flexible screen body including a display surface, the flexible screen body including a display area, a bend area and an extension area, the two ends of the bend area are respectively connected to the display area and the extension area, and the display area and the extension area are not coplanar;
  • the supporting film is attached to the opposite side of the display surface of the flexible screen body and includes a first curing area and a second curing area.
  • the first curing area and the second curing area respectively correspond to the display area and the extension area.
  • the curing strength of the first curing zone is greater than that of the second curing zone.
  • the supporting film further includes a curved region, the curved region is disposed between the first curing region and the second curing region, and the curved region corresponds to the bending region.
  • the curing strength of the curved region is less than that of the first curing region and the second curing region.
  • a plurality of grooves are disposed on a side of the bending region far from the bending region.
  • a portion of the groove near the bending area is a bottom, and an area of a bottom of the groove is smaller than an area of an opening of the groove.
  • the thickness of the support film in the first curing region and the thickness of the support film in the second curing region are both greater than the thickness of the support film in the curved region.
  • a surface of the curved region remote from the curved region is provided with a reflective coating.
  • the curved region includes a plurality of cured regions and a plurality of non-cured regions.
  • the cured area and the non-cured area are both strip-shaped, and the cured area and the non-cured area are alternately disposed.
  • the extending direction of the strip-shaped cured area and the non-cured area is consistent with the bending direction of the bending area.
  • the outer periphery of the solidified region and the outer periphery of the non-cured region are jagged.
  • the supporting film is made of a polyethylene terephthalate film or a polyimide film.
  • the present application also provides a display device including the above display panel.
  • the application also provides a method for manufacturing a display panel.
  • the method for manufacturing the display panel includes:
  • the flexible screen includes a display area, a bent area, and an extended area. The two ends of the bent area are respectively connected to the display area and the extended area.
  • the support film is divided into a first curing area, a second curing area, and a curved area.
  • the curved area is located between the first curing area and the second curing area.
  • the first curing area and the second curing area correspond to the display area and the extension area, respectively.
  • the bending area corresponds to the bending area;
  • a light shielding plate is arranged between the supporting film and the radiation source, and the light shielding plate is parallel to and opposite to the curved area;
  • the flexible screen body is bent and fixed toward the opposite side of the display surface of the flexible screen body.
  • the light shielding plate is provided with a hollow pattern.
  • the radiation source irradiates the first curing area for a longer time than the second curing area.
  • the method further includes:
  • the reflective coating is a reflective paint.
  • the radiation source is a combination of one or more of an ultraviolet lamp, an LED lamp, and a mercury lamp.
  • the display panel provided in the present application can enhance the support strength of the support film to the display area and the extension area by curing the first and second curing areas. At the same time, the bending stress generated by the flexible screen body and the supporting film at the bend can be reduced, so the stability of the display panel can be improved.
  • FIG. 1 is a schematic diagram of a display panel according to an embodiment of the present application.
  • FIG. 2 is a perspective view of a display panel according to an embodiment of the present application.
  • FIG. 3 is an expanded schematic view of a display panel according to an embodiment of the present application.
  • FIG. 4 is a schematic cross-sectional view of a supporting film according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of curing a supporting film according to an embodiment of the present application.
  • the display panel 10 includes a flexible screen body 100 and a support film 200 having a display surface.
  • the flexible screen 100 includes a display area 110, a bending area 120 and an extension area 130. Two ends of the bending area 120 are connected to the display area 110 and the extension area 130, respectively.
  • the display area 110 and the extended area 130 are not coplanar.
  • the display area 110 and the extension area 130 are parallel.
  • the support film 200 is attached on the opposite side of the display surface of the flexible screen body 100.
  • the support film 200 includes a first curing region 210 and a second curing region 220.
  • the first curing region 210 and the second curing region 220 correspond to the display region 110 and the extension region 130, respectively. That is, the first curing area 210 is attached to the display area 110 and the second curing area 220 is attached to the extension area 130.
  • the flexible screen 100 includes a flexible substrate.
  • the flexible substrate may be provided with a structure such as a display driving circuit and a light emitting diode array.
  • the flexible screen 100 is an OLED display.
  • the flexible screen 100 may be bent along a certain direction, or may be bent along multiple directions at the same time.
  • the display area 110 is used for displaying pictures.
  • the periphery of the display area 110 may be provided with a frame.
  • the frame can be used as a non-display area. When the display panel 10 needs to realize full-screen display, the width of the frame may be reduced, or the frame may not be provided.
  • the bending area 120 may be used for bending the flexible screen body 100.
  • the bending region 120 may not have a clear dividing line.
  • the size and bending diameter of the bending area 120 can be flexibly changed.
  • the material of the bending region 120 is more flexible than the material of the display region 110 and the extending region 130.
  • the extension region 130 may be used for setting a circuit device.
  • the flexible screen body 100 may include opposite front and back sides.
  • the front side of the flexible screen body 100 is the display surface of the flexible screen body, that is, a picture can be displayed in the display area 110.
  • a structure for supporting the flexible screen 100 may be provided on the back of the flexible screen 100.
  • a U-shaped structure can be formed.
  • the inner side of the U-shaped structure may be a back surface of the flexible screen body 100.
  • the extension region 130 and the display region 110 are arranged in parallel so that the display panel 10 has a plate-like structure, which is convenient for fixing the flexible screen body 100.
  • the supporting film 200 may be used for supporting the flexible screen 100. After the flexible screen body 100 is bent, the flexible screen body 100 is liable to be damaged due to bending stress or external force that may be encountered. Supporting the flexible screen body 100 through the support film 200 can increase the strength of the flexible screen body 100 and avoid damage to the flexible screen body 100.
  • the supporting film 200 may be a material having strength and toughness.
  • the supporting film 200 may be made of a polyethylene terephthalate film or a polyimide film. Polyethylene terephthalate film or polyimide film has good strength and toughness and is economical.
  • the display area 110 and the extension area 130 of the flexible screen body 100 are two planes, respectively, and are easily affected by external forces. Therefore, the area of the support film 200 corresponding to the display area 110 and the extension area 130 needs to be Has strong hardness and strength.
  • the first curing region 210 and the second curing region 220 may be formed on the support film 200 by high temperature curing or radiation curing. The cured support film 200 may have good strength and hardness.
  • the first curing region 210 and the second curing region 220 of the support film 200 can enhance the support strength and hardness of the support film 200 to the display region 110 and the extension region 130.
  • the bending stress generated by the flexible screen 100 and the supporting film 200 in the bending region 120 can be reduced, so the stability of the display panel 10 can be improved.
  • the curing strength of the first curing region 210 is greater than the curing strength of the second curing region 220. Since the display area 110 is generally provided with a layer structure having a relatively weak texture such as a touch-sensitive layer and a polarizer, and the display area 110 is susceptible to external pressure or impact, the display area 110 needs a strong strength and hardness. Since the curing strength of the first curing region 210 is greater than that of the second curing region 220, the supporting strength of the supporting film 200 to the display region 110 can be enhanced, and at the same time, the supporting film 200 can have A certain degree of toughness can cushion the impact of external forces.
  • the supporting film 200 further includes a curved region 230.
  • the curved region 230 is disposed between the first curing region 210 and the second curing region 220. Both ends of the curved region 230 are connected to the first curing region 210 and the second curing region 220, respectively.
  • the bending region 230 corresponds to the bending region 120, that is, the bending region 230 is attached to the bending region 120.
  • the curing strength of the curved region 230 is less than that of the first curing region 210 and the second curing region 220.
  • the bending region 230 is attached to the bending region 120, the bending region 230 and the bending region 120 are bent at the same time.
  • the bent area 120 of the flexible screen body 100 is located at the edge of the display panel 10 after being bent, and is easily damaged by bumps.
  • bending stress is generated and the compression resistance is poor. Therefore, by curing the curved region 230 to a certain extent, the strength of the support film 200 in the curved region 230 can be increased.
  • the curing strength of the curved region 230 lower than that of the first curing region 210 and the second curing region 220, it can be ensured that the support film 200 has both flexibility and strength in the curved region 230.
  • the first curing region 210 and the second curing region 220 have higher strength and hardness.
  • a plurality of grooves 231 are provided on a side of the curved region 230 away from the curved region 120. Since the bending stress will be generated in the bending region 230 after the supporting film 200 is bent, the deformation stress in the bending region 230 can be reduced through the groove 231, and the life of the supporting film 200 is further improved.
  • a portion of the groove 231 near the bending area 120 is a bottom, and an area of the bottom of the bending area 120 is smaller than an opening area of the groove 231.
  • the farther away from the bending region 120 the greater the deformation stress generated by the support film 200.
  • the shape of the groove 231 may be tapered.
  • the tapered opening is located on a surface of the curved region 230 away from the curved region 120.
  • the thickness of the support film 200 in the first curing region 210 and the thickness of the support film 200 in the second curing region 220 are both greater than the thickness of the support film 200 in the curved region 230.
  • the supporting film 200 needs to have better flexibility in the bending region 230. By reducing the thickness of the bending region 230, the flexibility of the supporting film 200 in the bending region 230 can be improved.
  • the areas of the support film 200 corresponding to the display area 110 and the extension area 130 require higher strength and hardness. By making the supporting film 200 have a larger thickness in the first curing region 210 and the second curing region 220, the strength and hardness of the supporting film 200 in the first curing region 210 and the second curing region 220 can be enhanced.
  • a reflective coating 232 is disposed on a surface of the curved region 230 away from the curved region 120.
  • the supporting film 200 may be cured by means of light irradiation. Since the supporting film 200 needs to have better flexibility in the bending region 230, the curing strength of the bending region 230 may be weaker than that of the first curing region 210 and the second curing region 220.
  • the reflective coating 232 may be a reflective paint.
  • the curved region 230 includes a plurality of cured regions 233 and a plurality of non-cured regions 234.
  • the cured regions 233 and the non-cured regions 234 may be alternately disposed.
  • the pattern of the cured region 233 and the pattern of the non-cured region 234 may be designed according to the stress change of the support film 200 in the curved region 230. After the supporting film 200 is bent, a large deformation stress is generated in the cured region 233. A part of the deformation stress in the cured region 233 can be released through the non-cured region 234, so that the life of the supporting film 200 can be improved.
  • the cured regions 233 and the non-cured regions 234 are both strip-shaped, and the cured regions 233 and the non-cured regions 234 are alternately disposed.
  • the extending direction of the strip-shaped cured area 233 and the non-cured area 234 may be the same as the bending direction of the bending area 120.
  • the outer periphery of the cured region 233 and the outer periphery of the non-cured region 234 are indented with each other.
  • the zigzag design can increase the contact area between the cured area 233 and the non-cured area 234 and facilitate the transfer of deformation stress.
  • an embodiment of the present application further provides a method for manufacturing a display panel.
  • the display panel manufacturing method can be used for manufacturing the display panel 10 provided in the above embodiments.
  • the display panel manufacturing method includes:
  • the flexible screen body 100 includes a display area 110, a bending area 120, and an extension area 130, wherein two ends of the bending area 120 are respectively connected to the display area 110 and the extension area 120;
  • the support film 200 is divided into a first curing region 210, a second curing region 220, and a curved region 230.
  • the curved region 230 is located between the first curing region 210 and the second curing region 220, and the first curing region 210 and the second
  • the curing area 220 corresponds to the display area 110 and the extension area 130, respectively, and the curved area 230 corresponds to the bending area 120;
  • a light shielding plate 300 is provided between the support film 200 and the radiation source 400, and the light shielding plate 300 is parallel to and opposite to the curved area 230;
  • the supporting film 200 is radiation-cured by the radiation source 400.
  • the flexible screen body 100 is bent and fixed toward the opposite side of the display surface of the flexible screen body 100.
  • the light shielding plate 300 can prevent or reduce the curing of the support film 200 in the curved area 230. Therefore, it can be ensured that the bending region 230 has a certain flexibility to facilitate bending.
  • the light shielding plate 300 may be provided with a hollow pattern. A portion of the curved region 230 can be cured by the hollow pattern, and the strength of the support film 200 in the curved region 230 can be improved to a certain extent.
  • the radiation source 400 radiates the surface of the support film 200 uniformly.
  • the radiation intensity of the radiation source 400 in different regions can also be changed according to different requirements of the curing degree of the support film 200 in different regions.
  • step S50 the first curing region 210 and the second curing region 220 are radiation-cured by the radiation source 400, which can enhance the support strength and hardness of the support film 200 in the display region 110 and the extension region 130. At the same time, the bending of the bending area 120 of the flexible screen body 100 is not affected, so the stability of the flexible screen body 100 can be improved.
  • step S60 after the flexible screen 100 is bent, the bending area 230 of the supporting film 200 is fixed, so as not to affect the bending of the supporting film 200.
  • the supporting film 200 since the flexibility of the bending region 230 is good, no excessive deformation stress is generated.
  • Fixing the curved area 230 after the flexible screen body 10 is bent enhances the strength of the curved area 230 of the support film 200, so that the internal circuit of the flexible screen body 100 can be prevented from being broken and damaged, and the flexible screen is improved The life of the body 100 and the support film 200.
  • the first curing region 210 and the second curing region 220 are cured by radiation.
  • the radiation source 400 may be a combination of one or more of an ultraviolet lamp, an LED lamp, a mercury lamp, and the like.
  • the radiation time of the radiation source to the first curing region 210 is greater than the radiation time of the second curing region 220. Therefore, the curing degree of the first curing region 210 is greater than the curing degree of the second curing region 220.
  • the display area 110 is generally provided with a layer structure having a relatively weak texture such as a touch-sensitive layer and a polarizer, and the display area 110 is susceptible to external pressure or impact, it needs strong strength and hardness.
  • the supporting strength of the supporting film 200 to the display region 110 can be enhanced, and at the same time, the supporting film 200 can have a certain toughness in the second curing region 220. To cushion the impact of external forces.
  • step S30 further includes: applying a reflective coating 232 on the surface of the bending region 230 away from the bending region 120.
  • the reflective coating 232 may be a reflective paint.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract

本申请提供显示面板、显示装置和显示面板的制作方法。显示面板包括柔性屏体和支撑膜。柔性屏体包括显示区、弯折区和延伸区。弯折区的两端分别连接显示区和延伸区。显示区和延伸区不共面。支撑膜贴附在柔性屏体的显示面的相对侧。支撑膜包括第一固化区和第二固化区。第一固化区和第二固化区分别对应于显示区和延伸区。

Description

显示面板、显示装置及显示面板的制作方法 技术领域
本申请涉及显示领域，特别是涉及一种显示面板、显示装置及显示面板的制作方法。
背景技术
柔性屏体通常存在由于翻折后而导致屏体显示不良的问题。柔性屏体翻折后产生的应力影响了显示模组结构的可靠性。为了保护柔性屏体，常常需要在柔性屏体的表面贴附支撑层。但是柔性屏体与支撑层在弯折会产生较大的弯曲应力，容易导致损坏柔性屏体。
发明内容
本申请提供一种显示面板、显示装置及显示面板的制作方法，能够提高显示面板的稳定性。
本申请提供一种显示面板，该显示面板包括：
包括显示面的柔性屏体，柔性屏体包括显示区、弯折区和延伸区，弯折区的两端分别连接显示区和延伸区，显示区和延伸区不共面；以及
支撑膜，贴附于柔性屏体的显示面的相对侧，包括第一固化区和第二固化区，第一固化区和第二固化区分别对应于显示区和延伸区。
在一实施例中，第一固化区的固化强度大于第二固化区的固化强度。
在一实施例中，支撑膜还包括弯曲区域，弯曲区域设置在第一固化区和第二固化区之间，弯曲区域对应于弯折区。
在一实施例中，弯曲区域的固化强度小于第一固化区和第二固化区的固化强度。
在一实施例中，弯曲区域远离弯折区的一侧间隔设置有多个凹槽。
在一实施例中，凹槽靠近弯折区的部分为底部，凹槽的底部的面积小于凹槽的开口的面积。
在一实施例中，支撑膜在第一固化区的厚度和支撑膜在第二固化区的厚度均大于支撑膜在弯曲区域的厚度。
在一实施例中，弯曲区域远离弯折区的表面设置有反光涂层。
在一实施例中，弯曲区域包括多个固化区域和多个非固化区域。
在一实施例中，固化区域和非固化区域均为条状，且固化区域和非固化区域交替设置。
在一实施例中，条状的固化区域和非固化区域的延伸方向与弯折区的弯曲方向一致。
在一实施例中，固化区域的外周和非固化区域的外周呈相互咬合的锯齿状。
在一实施例中，支撑膜由聚对苯二甲酸乙二醇薄膜或者聚酰亚胺薄膜制成。
本申请还提供一种显示装置，该显示装置包括上述的显示面板。
本申请还提供一种显示面板的制作方法，该显示面板的制作方法包括：
提供具有显示面的柔性屏体，柔性屏体包括显示区、弯折区和延伸区，弯折区的两端分别连接显示区和延伸区；
将一支撑膜贴附于柔性屏体的显示面的相对侧；
将支撑膜划分为第一固化区、第二固化区以及弯曲区域，弯曲区域位于第一固化区和第二固化区之间，第一固化区和第二固化区分别对应于显示区和延伸区，弯曲区域对应于弯折区；
在支撑膜和辐射源之间设置遮光板，遮光板与弯曲区域平行且相对设置；
通过辐射源对支撑膜进行辐射固化；以及
将柔性屏体朝向柔性屏体的显示面的相对侧弯曲固定。
在一实施例中，遮光板设置有镂空图案。
在一实施例中，辐射源对第一固化区的辐射时间大于对第二固化区的辐射时间。
在一实施例中，在将支撑膜划分为第一固化区、第二固化区以及弯曲区域之后，还包括：
在弯曲区域远离弯折区的表面涂覆反光涂层。
在一实施例中，反光涂层为反光漆。
在一实施例中，辐射源为紫外灯、LED灯、汞灯中的一种或多种的组合。
本申请提供的显示面板，通过对第一固化区和第二固化区进行固化，可以增强支撑膜对显示区和延伸区的支撑强度。同时可以减小柔性屏体和支撑膜在弯折处产生的弯曲应力，因此可以提高显示面板的稳定性。
附图说明
图1为根据本申请实施例的显示面板的示意图；
图2为根据本申请实施例的显示面板的立体图
图3为根据本申请实施例的显示面板的展开示意图；
图4为根据本申请实施例的支撑膜的剖面示意图；
图5为根据本申请实施例的对支撑膜进行固化的示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下通过实施例，并结合附图，对本申请的显示面板和显示面板的制作方法进行进一步地详细说明。本文所描述的具体实施例仅用于解释本申请，并不用于限制本申请。
参见图1至图3，本申请实施例提供一种显示面板10。该显示面板10包括具有显示面的柔性屏体100和支撑膜200。所述柔性屏体100包括显示区110、弯折区120和延伸区130。弯折区120的两端分别连接显示区110和延伸区130。显示区110和延伸区130不共面。显示区110和延伸区130平行。支撑膜200贴附在柔性屏体100的显示面的相对侧。所述支撑膜200包括第一固化区210和第二固化区220。第一固化区210和第二固化区220分别对应于显示区110和延伸区130。即，第一固化区210贴附在显示区110，第二固化区220贴附在延伸区130。
柔性屏体100包括柔性基底。柔性基底可以设置有显示驱动电路、发光二极体阵列等结构。所述柔性屏体100为OLED显示屏。所述柔性屏体100可以沿着某个方向弯折，也可以同时沿着多个方向弯折。所述显示区110用于显示画面。显示区110的外周可以设置有边框。所述边框可以作为非显示区。当所述显示面板10需要实现全面屏显示时，可以减小边框的宽度，或者可以不设置边框。
所述弯折区120可以用于弯曲柔性屏体100。弯折区120可以不具有明显的分界线。可以灵活改变弯折区120的大小和弯曲直径。在一实施例中，所述弯折区120的材料的柔性比显示区110和延伸区130的材料的柔性更好。延伸区130可以用于设置电路器件。柔性屏体100可以包括相对的正面和背面。柔性屏体100的正面即为柔性屏体的所述显示面，即，在显示区110可以显示画面。柔性屏体100的背面可以设置用于支撑柔性屏体100的结构。柔性屏体100弯曲后可以形成U形结构。在所述U形结构的内侧可以为柔性屏体100的背面。延伸区130和显示区110平行设置可以使得显示面板10具有板状结构，便于柔性屏体100的固定。
所述支撑膜200可以用于支撑柔性屏体100。在弯曲柔性屏体100后，由于弯曲应力或者可能遇到的外力冲击，柔性屏体100容易造成损坏。通过支撑膜200对所述柔性屏体100进行支撑，可以增强柔性屏体100的强度，避免对柔性屏体100造成损坏。
所述支撑膜200可以为具有强度和韧性的材料。在一实施例中，所述支撑膜200可以由聚对苯二甲酸乙二醇薄膜或者聚酰亚胺薄膜制成。聚对苯二甲酸乙二醇薄膜或者聚酰亚胺薄膜具有良好的强度和韧性，且经济实惠。
所述柔性屏体100的所述显示区110和所述延伸区130分别为两个平面，容易受到外力 的冲击，因此支撑膜200对应于所述显示区110和所述延伸区130的区域需要具有较强的硬度和强度。在一实施例中，可以通过高温固化或者辐射固化在支撑膜200形成所述第一固化区210和所述第二固化区220。固化后的支撑膜200可以具有良好的强度和硬度。
在本申请实施例提供的显示面板10中，支撑膜200的第一固化区210和第二固化区220可以增强支撑膜200对显示区110和延伸区130的支撑强度和硬度。同时可以减小所述柔性屏体100和所述支撑膜200在所述弯折区120产生的弯曲应力，因此可以提高所述显示面板10的稳定性。
在一实施例中，所述第一固化区210的固化强度大于所述第二固化区220的固化强度。由于显示区110通常设置有触摸感应层、偏光片等质地比较脆弱的层结构，而显示区110容易受到外力压迫或者冲击，因此显示区110需要较强的强度和硬度。由于第一固化区210的固化强度大于第二固化区220的固化强度，因此可以增强所述支撑膜200对所述显示区110的支撑强度，同时可以使支撑膜200在第二固化区220具有一定的韧性，可以缓冲外力冲击。
在一实施例中，所述支撑膜200还包括弯曲区域230。所述弯曲区域230设置于所述第一固化区210和所述第二固化区220之间。弯曲区域230的两端分别与第一固化区210和第二固化区220连接。所述弯曲区域230对应于弯折区120，即弯曲区域230贴附在弯折区120。所述弯曲区域230的固化强度小于所述第一固化区210和所述第二固化区220的固化强度。
弯曲区域230贴附在弯折区120，因此弯曲区域230与弯折区120同时弯折。柔性屏体100的弯折区120弯曲后位于显示面板10的边缘，容易磕碰损坏。同时，柔性屏体100的弯折区120弯曲后会产生弯曲应力，抗压能力差。因此通过对弯曲区域230进行一定程度的固化，可以提高支撑膜200在弯曲区域230的强度。通过使所述弯曲区域230的固化强度小于所述第一固化区210和所述第二固化区220的固化强度，可以保证所述支撑膜200在所述弯曲区域230兼具柔韧性和强度，同时使所述第一固化区210和所述第二固化区220具有较高的强度和硬度。
请再参见图1，在一实施例中，所述弯曲区域230远离弯折区120的一侧间隔设置有多个凹槽231。由于所述支撑膜200弯曲后，在所述弯曲区域230会产生弯曲应力，通过所述凹槽231，可以减少在所述弯曲区域230的形变应力，进一步提高所述支撑膜200的寿命。
在一实施例中，所述凹槽231靠近弯折区120的部分为底部，所述弯折区120底部的面积小于凹槽231的开口的面积。在弯曲区域230，越远离弯折区120，支撑膜200产生的形变应力越大。通过使得凹槽231的底部的面积小于凹槽231的开口的面积，可以均匀地释放支撑膜200的弯曲区域230的形变应力。
在一实施例中，凹槽231的形状可以为锥形。所述锥形的开口位于弯曲区域230远离弯 折区120的表面。
在一实施例中，支撑膜200在第一固化区210的厚度和支撑膜200在第二固化区220的厚度均大于支撑膜200在弯曲区域230的厚度。支撑膜200在弯曲区域230需要具有较好的柔韧性，通过减小弯曲区域230的厚度可以提高支撑膜200在弯曲区域230的柔韧性。支撑膜200对应于显示区110和延伸区130的区域需要较高的强度和硬度。通过使得支撑膜200在第一固化区210和第二固化区220具有较大的厚度，可以增强支撑膜200在第一固化区210和第二固化区220的强度和硬度。
在一实施例中，所述弯曲区域230远离弯折区120的表面设置有反光涂层232。可以采用光照辐射的方式对支撑膜200进行固化。由于支撑膜200在弯曲区域230需要具有较好的柔韧性，因此弯曲区域230的固化强度可以弱于第一固化区210和第二固化区220的固化强度。通过在弯曲区域230远离弯折区120的表面设置反光涂层232，可以削弱光照辐射对弯曲区域230的固化程度，因此可以保证弯曲区域230具有一定的柔韧性。在一实施例中，反光涂层232可以为反光漆。
请参见图4，在一实施例中，弯曲区域230包括多个固化区域233和多个非固化区域234。所述固化区域233和非固化区域234可以交替设置。所述固化区域233的图案和所述非固化区域234的图案可以根据所述支撑膜200在所述弯曲区域230的应力变化设计。在所述支撑膜200弯曲后在固化区域233会产生较大的形变应力，通过非固化区域234可以释放固化区域233的部分形变应力，因而可以提高支撑膜200的寿命。
在一实施例中，固化区域233和非固化区域234均为条状，且固化区域233和非固化区域234交替设置。条状的固化区域233和非固化区域234的延伸方向可以与弯折区120的弯曲方向一致。弯曲支撑膜200后，在弯曲区域230，固化区域233产生的形变应力可以均匀地向相邻的非固化区域234释放。
在一实施例中，固化区域233的外周和非固化区域234的外周呈相互咬合的锯齿状。锯齿状设计可以增加固化区域233和非固化区域234之间的接触面积，便于形变应力的传递。
请参见图5，本申请实施例还提供一种显示面板制作方法。显示面板制作方法可以用于制作上述实施例提供的显示面板10。显示面板制作方法包括：
S10，提供具有显示面的柔性屏体100，柔性屏体100包括显示区110、弯折区120和延伸区130，其中弯折区120的两端分别连接显示区110和延伸区120；
S20，将一支撑膜200贴附在柔性屏体100的显示面的相对侧；
S30，将支撑膜200划分为第一固化区210、第二固化区220以及弯曲区域230，弯曲区域230位于第一固化区210和第二固化区220之间，第一固化区210和第二固化区220分别 对应于显示区110和延伸区130，弯曲区域230对应于弯折区120；
S40，在支撑膜200和辐射源400之间设置遮光板300，遮光板300与弯曲区域230平行且相对设置；
S50，通过辐射源400对支撑膜200进行辐射固化；
S60，将柔性屏体100朝向柔性屏体100的显示面的相对侧弯曲固定。
在步骤S40中，遮光板300可以避免或者减少支撑膜200在弯曲区域230的固化。因此可以保证弯曲区域230具有一定的柔韧性，以便于弯曲。
在一实施例中，遮光板300可以设置有镂空图案。通过镂空图案可以对弯曲区域230中的部分区域进行固化，在一定程度上可以提高支撑膜200在弯曲区域230的强度。
在一实施例中，辐射源400对支撑膜200的表面进行均匀地辐射。辐射源400在不同区域的辐射强度也可以根据支撑膜200对不同区域的固化程度的不同要求而变化。
在步骤S50中，通过辐射源400对第一固化区210和第二固化区220进行辐射固化，可以增强支撑膜200在显示区110和延伸区130的支撑强度和硬度。同时不影响柔性屏体100的弯折区120的弯曲，因此可以提高柔性屏体100的稳定性。
在步骤S60中，在所述柔性屏体100弯曲后再对所述支撑膜200的所述弯曲区域230进行固定，可以不影响所述支撑膜200的弯曲。在所述支撑膜200弯曲时，由于弯曲区域230的柔韧性较好，因此不会产生过大的形变应力。在所述柔性屏体10弯曲后再对所述弯曲区域230进行固定，增强了支撑膜200的弯曲区域230的强度，因此可以避免柔性屏体100的内部线路的断裂和损坏，提高了柔性屏体100和支撑膜200的寿命。
在一实施例中，步骤S50中，采用辐射的方式对第一固化区210和第二固化区220进行固化。辐射源400可以为紫外灯、LED灯、汞灯等中的一种或多种的组合。
在一实施例中，辐射源对第一固化区210的辐射时间大于对第二固化区220的辐射时间。因此第一固化区210的固化程度大于第二固化区220的固化程度。由于显示区110通常设置有触摸感应层、偏光片等质地比较脆弱的层结构，同时显示区110容易受到外力压迫或者冲击，因此需要较强的强度和硬度。通过使得第一固化区210的固化强度大于第二固化区220的固化强度，可以增强支撑膜200对显示区110的支撑强度，同时可以使支撑膜200在第二固化区220具有一定的韧性，以缓冲外力冲击。
在一实施例中，步骤S30中还包括：在弯曲区域230远离弯折区120的表面涂覆反光涂层232。
在本实施例中，通过在弯折区120域远离弯折区120的表面设置反光涂层232，可以削弱光照辐射对弯曲区域230的固化程度，因此可以保证弯曲区域230具有一定的柔韧性。在 一实施例中，反光涂层232可以为反光漆。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为本专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种显示面板，包括：
    包括显示面的柔性屏体，所述柔性屏体包括显示区、弯折区和延伸区，所述弯折区的两端分别连接所述显示区和所述延伸区，所述显示区和所述延伸区不共面；以及
    支撑膜，贴附在所述柔性屏体的显示面的相对侧，包括第一固化区和第二固化区，所述第一固化区和所述第二固化区分别对应于所述显示区和所述延伸区。
  2. 如权利要求1的显示面板，其中，所述第一固化区的固化强度大于所述第二固化区的固化强度。
  3. 如权利要求1的显示面板，其中，所述支撑膜还包括弯曲区域，所述弯曲区域设置在所述第一固化区和所述第二固化区之间，所述弯曲区域对应于所述弯折区。
  4. 如权利要求3的显示面板，其中，所述弯曲区域的固化强度小于所述第一固化区和所述第二固化区的固化强度。
  5. 如权利要求3的显示面板，其中，所述弯曲区域远离所述弯折区的一侧间隔设置有多个凹槽。
  6. 如权利要求5的显示面板，其中，所述凹槽靠近所述弯折区的部分为底部，所述凹槽的底部的面积小于所述凹槽的开口的面积。
  7. 如权利要求3的显示面板，其中，所述支撑膜在所述第一固化区的厚度和所述支撑膜在所述第二固化区的厚度均大于所述支撑膜在所述弯曲区域厚度。
  8. 如权利要求3的显示面板，其中，所述弯曲区域远离所述弯折区的表面设置有反光涂层。
  9. 如权利要求3的显示面板，其中，所述弯曲区域包括多个固化区域和多个非固化区域。
  10. 如权利要求9的显示面板，其中，所述固化区域和所述非固化区域均为条状，且所述固化区域和所述非固化区域交替设置。
  11. 如权利要求10的显示面板，其中，条状的所述固化区域和所述非固化区域的延伸方向与所述弯折区的弯曲方向一致。
  12. 如权利要求10的显示面板，其中，所述固化区域的外周和所述非固化区域的外周呈相互咬合的锯齿状。
  13. 如权利要求1的显示面板，其中，所述支撑膜由聚对苯二甲酸乙二醇薄膜或者聚酰亚胺薄膜制成。
  14. 一种显示装置，包括权利要求1至13中的任一项所述的显示面板。
  15. 一种显示面板的制作方法，包括：
    提供具有显示面的柔性屏体，所述柔性屏体包括显示区、弯折区和延伸区，所述弯折区的两端分别连接所述显示区和所述延伸区；
    将一支撑膜贴附在所述柔性屏体的显示面的相对侧；
    将所述支撑膜划分为第一固化区、第二固化区以及弯曲区域，所述弯曲区域位于所述第一固化区和所述第二固化区之间，所述第一固化区和所述第二固化区分别对应于所述显示区和所述延伸区，所述弯曲区域对应于所述弯折区；
    在所述支撑膜和辐射源之间设置遮光板，所述遮光板与所述弯曲区域平行且相对设置；
    通过所述辐射源对所述支撑膜进行辐射固化；以及
    将所述柔性屏体朝向所述柔性屏体的所述显示面的相对侧弯曲固定。
  16. 如权利要求15的显示面板的制作方法，其中，所述遮光板设置有镂空图案。
  17. 如权利要求15的显示面板的制作方法，其中，所述辐射源对所述第一固化区的辐射时间大于对所述第二固化区的辐射时间。
  18. 如权利要求15的显示面板的制作方法，其中，在将所述支撑膜划分为第一固化区、第二固化区以及弯曲区域之后，还包括：
    在所述弯曲区域远离所述弯折区的表面涂覆反光涂层。
  19. 如权利要求18的显示面板的制作方法，其中，所述反光涂层为反光漆。
  20. 如权利要求15的显示面板的制作方法，其中，所述辐射源为紫外灯、LED灯、汞灯中的一种或多种的组合。
PCT/CN2019/082085 2018-07-18 2019-04-10 显示面板、显示装置及显示面板的制作方法 WO2020015395A1 (zh)

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