WO2022247724A1 - 柔性显示屏和电子设备 - Google Patents

柔性显示屏和电子设备 Download PDF

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Publication number
WO2022247724A1
WO2022247724A1 PCT/CN2022/093856 CN2022093856W WO2022247724A1 WO 2022247724 A1 WO2022247724 A1 WO 2022247724A1 CN 2022093856 W CN2022093856 W CN 2022093856W WO 2022247724 A1 WO2022247724 A1 WO 2022247724A1
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WIPO (PCT)
Prior art keywords
support body
flexible display
display screen
optical adhesive
layer
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PCT/CN2022/093856
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English (en)
French (fr)
Inventor
张祖强
李文学
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维沃移动通信有限公司
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Publication of WO2022247724A1 publication Critical patent/WO2022247724A1/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

Definitions

  • the present application belongs to the field of display technology, and in particular relates to a flexible display screen and electronic equipment.
  • the purpose of the embodiments of the present application is to provide a flexible display screen and an electronic device, which can solve the problem in the prior art that pits are easily formed on the surface of the flexible display screen, which affects the appearance and display effect of the screen.
  • the embodiment of the present application provides a flexible display screen, which includes: a display unit layer, an optical adhesive layer disposed on the display unit layer, and a plurality of optical adhesive layers disposed in the optical adhesive layer.
  • the first support body, the cross-section of each first support body has a branch-like extension structure, and the gaps of the plurality of first support bodies are evenly filled with optical glue.
  • the cross-sectional shape of the first support body includes at least one of a trident shape, a cross shape, a P-shaped shape, a card-shaped shape, and a well-shaped shape.
  • the flexible display screen further includes a second support body, the first support body and the second support body are vertically and evenly distributed in the optical adhesive layer, and the first support body and the second support body The second supports are arranged at intervals.
  • the cross-sectional shape of the second support body includes: at least one of a circle, a polygon, a trident, a cross, a square, a card, and a well.
  • the height of the first support body is greater than or equal to the thickness of the optical adhesive layer, and the height of the second support body is smaller than the thickness of the optical adhesive layer.
  • adjacent first supports among the plurality of first supports are separated from each other to form gaps.
  • the branch-shaped extension structures connecting the adjacent first supports are connected through the third supports, and the third The height of the supporting body is lower than the first supporting body.
  • adjacent first supports are connected by the branch-like extension structure to form a closed grid-like structural unit.
  • the height of the first support is smaller than the thickness of the optical adhesive layer.
  • the flexible display screen further includes a flexible glass layer, and the flexible glass layer is disposed between the display unit layer and the optical glue layer.
  • the flexible display screen further includes a protective material layer and a hard film, and the protective material layer and the hard film are sequentially disposed on a side of the optical adhesive layer away from the display unit layer.
  • the protective material layer is made of transparent polyimide material or polyethylene terephthalate material.
  • the material of the first support is any one of metal oxide, ceramic material or transparent metal electrode material.
  • an embodiment of the present application provides an electronic device, which includes the flexible display screen as described in the first aspect.
  • the first support in the optical adhesive layer on the display unit layer by arranging the first support in the optical adhesive layer on the display unit layer, it can provide support for the optical adhesive layer or improve the elasticity, and reduce the deformation of the optical adhesive layer when it is squeezed, so that it can To improve the problem that the sag on the surface of the flexible display screen causes the appearance of the screen to deteriorate and the display effect to decrease.
  • FIG. 1 is a schematic structural diagram of a flexible display screen in the related art
  • Fig. 2 is a schematic diagram of pits on the surface of a flexible display
  • FIG. 3 is a schematic structural diagram of a flexible display screen provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of the distribution of the first support in the optical adhesive layer provided by the embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of another flexible display screen provided by the embodiment of the present application.
  • FIG. 6 is a schematic diagram of the distribution of the first support and the second support in the optical adhesive layer provided by the embodiment of the present application;
  • Fig. 7 is a schematic structural diagram of another flexible display screen provided by the embodiment of the present application.
  • Fig. 8 is one of the cross-sectional schematic diagrams of the grid-like structure provided by the embodiment of the present application.
  • Fig. 9 is the second schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application.
  • Figure 10 is the third schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application.
  • Fig. 11 is the fourth schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of another flexible display screen provided by the embodiment of the present application.
  • Fig. 13 is the fifth schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application.
  • Fig. 14 is the sixth schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application.
  • Fig. 15 is the seventh schematic cross-sectional view of the grid structure provided by the embodiment of the present application.
  • Fig. 16 is the eighth cross-sectional schematic diagram of the grid-like structure provided by the embodiment of the present application.
  • Fig. 17 is a schematic structural view of a flexible display screen provided by an embodiment of the present application with a first support body and a third support body;
  • Fig. 18 is a schematic diagram of the connection between the first support body and the third support body provided by the embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a flexible display in the related art
  • FIG. 2 is a schematic diagram of pits on the surface of the flexible display.
  • the flexible display includes a display unit 11 , flexible glass 12 , optical glue 13 and protective material 14 .
  • the surface of the flexible display is deformed, causing permanent deformation of the optical glue 13, resulting in the formation of pits 15 on the surface of the screen. It will affect the appearance and display effect of the flexible display.
  • the embodiment of the present application provides a flexible display screen, which includes an optical adhesive layer with a display unit layer disposed on the display unit layer and a plurality of first optical adhesive layers disposed in the optical adhesive layer.
  • the support body, the cross section of each first support body has a branch-like extension structure, and the gaps of the plurality of first support bodies are evenly filled with optical glue. That is to say, in the embodiment of the present application, by inserting the first support body in the optical adhesive layer, it can provide support for the optical adhesive layer or improve the elasticity, and reduce the deformation of the optical adhesive layer when it is squeezed, thereby improving the flexible display.
  • the sag on the surface of the screen causes the problem that the appearance of the screen is deteriorated and the display effect is reduced.
  • the cross-sectional shape of the first support body includes at least one of a trident shape, a cross shape, a square shape, a card-shaped shape, and a well-shaped shape, that is to say, the cross-sectional shape can be Regular radial patterns such as tridents, crosses, and rice characters, the radial pattern is composed of a central point and a number of radial rays diverging from the central point, and the cross-sectional shape can also be an irregular shape, such as Card-shaped, etc., or branch-like.
  • the branch-shaped extension structure is used to extend in the cross-sectional direction, which can enhance the support and/or elastic force of the first support body when it is squeezed, so that the optical adhesive layer produce less deformation.
  • the cross-sectional shape of the first support body can be any one of a trident, a cross, and a rice-shaped shape, and the trident can be regarded as the and three radial rays diverging outward from the central point, similarly, the cross shape can be regarded as being composed of the central point and four radial rays diverging outward from the central point, and the rice-shaped figure can be regarded as consisting of the central point and six radial rays radiating outward from the central point.
  • FIG. 3 is a schematic structural diagram of a flexible display provided by an embodiment of the present application
  • FIG. 4 is a schematic diagram of the distribution of the first support in the optical adhesive layer provided by an embodiment of the present application.
  • the flexible display screen includes a display unit layer 21, a flexible glass layer 22, an optical adhesive layer 23, a protective material layer 24 and a hard film 25, and the protective material layer 24 and the hard film 25 sequentially disposed on the side of the optical adhesive layer 23 away from the display unit layer 21 .
  • the display unit layer 21 is composed of a display unit, and the display unit may be a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (organic light-emitting diode, OLED), a light-emitting diode (light emitting diode, LED) in any one or more;
  • the display unit layer 21 is provided with a flexible glass layer 22, the flexible glass layer 22 can be ultra-thin flexible glass (ultra thin glass, UTG); because the flexible glass layer 22 may cause the user to be cut by fragments when the flexible glass layer 22 is broken, therefore, a layer of protective material layer 24 can be pasted on the flexible glass layer 22, and the protective material layer 24 can be transparent polyimide (color -less polyimide, CPI) or polyethylene terephthalate (polyethylene terephthalate, PET) and other materials; and an optical adhesive layer 23 is also arranged between the flexible glass layer 22 and the protective material layer 24, and the optical adhesive layer
  • the height of the first support body 26 is smaller than the thickness of the optical adhesive layer 23 . That is to say, one end of the first supporting body 26 is against the flexible glass layer 22 , but the other end is not in contact with the protective material layer 24 , but is completely covered by the optical glue layer 23 .
  • the first support body 26 fails to directly form an effective support for the protective material layer 24, but it can improve the elastic force when the optical adhesive layer 23 is squeezed by an external force, and, since the first support body 26 does not contact with the surface of the protective material layer 24 , so the adhesion area between the optical adhesive layer 23 and the protective material layer 24 will not be affected.
  • there are multiple first support bodies 26 there are multiple first support bodies 26 , and the multiple first support bodies 26 are vertically and evenly distributed in the optical adhesive layer 23 .
  • Figure 5 is a schematic structural diagram of another flexible display provided by the embodiment of the present application
  • Figure 6 shows the first support and the second support provided by the embodiment of the present application in the optical adhesive layer A schematic diagram of the distribution.
  • the flexible display screen further includes a second support body 27, and optionally, the height of the first support body 26 is greater than or equal to the thickness of the optical adhesive layer 23 , and the height of the second support body 27 is smaller than the thickness of the optical adhesive layer 23 .
  • the first support body 26 is set against the flexible glass layer 22, while the other end is set against the protective material layer 24, and one end of the second support body 27 is set against the flexible glass layer 22, But the other end does not touch the protective material layer 24, but is completely covered by the optical adhesive layer 23; in this case, the first support column 26 can directly support the protective material layer 24, thereby maintaining the optical adhesive
  • the number of the first support body 26 and the second support body 27 is multiple, and the plurality of first support bodies 26 and the plurality of second support bodies 27 are vertically distributed on In the optical adhesive layer 23 , preferably, the plurality of first supports 26 and the plurality of second supports 27 may be uniformly distributed in the optical adhesive layer 23 .
  • the cross-sectional shape of the second support body 27 includes: at least one of a circle, a polygon, a trident, a cross, a square, a square, and a well. That is to say, the cross-sectional shapes of the multiple second supports 27 can be the same shape or different shapes; for example, the cross-sectional shapes of the second supports 27 can be closed shapes such as circles and polygons, It can also be partially closed or unclosed shapes such as trident, cross, rice-shaped, card-shaped, well-shaped, that is, the cross-section of the second support body 27 can also have a branch-like extension structure.
  • Figure 7 is a schematic structural view of another flexible display provided in the embodiment of the present application
  • Figure 8 is one of the cross-sectional schematic views of the grid structure provided in the embodiment of the present application
  • Figure 9 is the The second schematic cross-sectional view of the grid-like structure provided by the embodiment of the application
  • Figure 10 is the third schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application
  • Figure 11 is the schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application Four.
  • the number of the first support bodies 26 is multiple, and at least part of the adjacent first support bodies 26 among the plurality of first support bodies 26 are connected to each other through the branch-shaped extension structure.
  • connection forms a closed grid-like structural unit, that is to say, since the cross section of the first support body 26 has a branch-like extension structure, adjacent first support bodies 26 can directly pass through the branch-like extension structure. are connected to each other to form a closed grid-like structural unit.
  • the cross-sectional shape of the first support body 26 is radial, for example, it can be a trident, a cross, a rice, etc., thereby forming a closed
  • the grid structure unit can correspond to polygons such as triangles, quadrangles, hexagons, etc., as shown in Figure 8 and Figure 9, the cross-sectional shape of the first support body 26 is trident, specifically Y-shaped in Figure 8, and Figure 8 9 is specifically T-shaped.
  • first supports 26 in all first supports 26 are connected to each other to form an entire closed grid-like structure, and each grid-like structure in the formed closed grid-like structure
  • the structural units are all the same shape.
  • the height of the first support body 26 may be smaller than the thickness of the optical adhesive layer 23, at this time, the part of the optical adhesive higher than the first support body 26 will not Restricted by the grid structure, the advection of the optical glue can be used to ensure that the thickness of the optical glue layer 23 is uniform when making the optical glue layer 23, and the first support body 26 plays the role of improving the elasticity of the optical glue layer 23, helping The optical adhesive layer 23 returns to its original thickness.
  • the height of the first support body 26 is greater than or equal to the thickness of the optical adhesive layer 23. At this time, all the optical adhesives in the optical adhesive layer 23 will be separated into the formed grid structure.
  • the first support body 26 can also play a direct supporting role to support the protective material layer 24 .
  • all the first supports 26 in the optical adhesive layer 23 can be integrally formed.
  • Figure 12 is a schematic structural diagram of another flexible display provided by the embodiment of the present application
  • Figure 13 is the fifth cross-sectional schematic diagram of the grid structure provided by the embodiment of the present application
  • Figure 14 is the The sixth schematic cross-sectional view of the grid-like structure provided by the embodiment of the application
  • Figure 15 is the seventh schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application
  • Figure 16 is the schematic cross-sectional view of the grid-like structure provided by the embodiment of the present application eighth.
  • the number of the first supports 26 is multiple, and the adjacent first supports 26 among the plurality of first supports 26 are separated from each other to form gaps, that is to say , the adjacent first supports 26 may not be connected, so that all the first supports 26 are equivalent to forming a grid-like structure with openings.
  • the cross-sectional shape of the first supports 26 is radial, for example It can be trident, cross, P-shaped, etc., thus, the smallest repeating unit of the grid-like structure with openings can correspond to polygonal structures such as triangles, quadrangles, hexagons, etc., but at least one of these smallest repeating units At least one opening is formed on the side because of the existence of the gap.
  • the cross-sectional shape of the first support body 26 is trident, specifically Y-shaped in Figure 13, and T in Figure 14. shape.
  • shape of each smallest repeating unit of the grid-like structure with openings formed by all the first supports 26 is the same.
  • the first supports 26 are separated from each other and not connected to form a grid structure with openings.
  • the optical glue can be limited in the grid structure with openings, reducing the fluidity of the optical glue, thereby achieving the effect of reducing the deformation of the optical glue layer 23 Purpose.
  • the height of the first support body 26 may be smaller than the thickness of the optical adhesive layer 23, at this time, the part of the optical adhesive higher than the first support body 26 will not Restricted by the grid structure, the advection of the optical glue can be used to ensure that the thickness of the optical glue layer 23 is uniform when making the optical glue layer 23, and the first support body 26 plays the role of improving the elasticity of the optical glue layer 23, helping The optical adhesive layer 23 returns to its original thickness.
  • the height of the first support body 26 is greater than or equal to the thickness of the optical adhesive layer 23. At this time, all the optical adhesives in the optical adhesive layer 23 will be separated into the formed grid structure. In each of the smallest grids, the fluidity of the optical adhesive is reduced to the greatest extent, and the deformation of the optical adhesive layer 23 is reduced.
  • Figure 17 is a schematic structural view of a flexible display screen with a first support body and a third support body provided by an embodiment of the present application
  • Figure 18 is a schematic diagram of a first support body and a third support body provided by an embodiment of this application Schematic diagram of the connections of the three supports.
  • the flexible display screen includes a first support body 26 and a third support body 28, and the first support body 26 and the third support body 28 are inserted in the optical adhesive layer 23, wherein, The height of the first support body 26 is greater than or equal to the thickness of the optical adhesive layer 23, and the height of the second support body 26 is smaller than the thickness of the optical adhesive layer 23.
  • the cross-sectional shape of the third support body 28 It is in the shape of a line, or called a bar shape, and a third support body 28 is arranged between two adjacent first support bodies 26, and the branch-shaped extension structure of the two adjacent first support bodies 26 passes through the The third support body 28 between them is connected to each other, that is to say, the two ends of the third support body 28 located between two adjacent first support bodies 26 in the direction parallel to the display unit layer are respectively It is connected with the branch-shaped extension structure of the two adjacent first supports, thus, all the first supports 26 and the third supports 28 are equivalent to jointly forming a grid-like structural unit.
  • the first support The cross-sectional shape of a support body 26 is radial, for example, can be trident, cross, rice-shaped etc., and the cross-sectional shape of the third support body 28 is a straight shape, therefore, thus, the formed grid-like structure
  • the smallest repeating unit can correspond to polygonal structures such as triangles, quadrangles, hexagons, etc., but since the height of the third support body 28 is smaller than the height of the first support body 26, at least one side of these smallest repeating units is due to the existence of height difference Instead, at least one opening is formed.
  • a grid-like structure with openings is formed, which can be allowed to be higher than the third support body when making the optical adhesive layer 23.
  • optical glue can flow through the opening before curing, thereby improving the flatness of bonding between the flexible glass layer 22 and the protective material layer 24;
  • the fluidity of the optical adhesive is reduced, so as to achieve the purpose of reducing the deformation of the optical adhesive layer 23, and the first support body 26 can play a direct supporting role, forming an effective support for the protective material layer 24, while the third support body 28 When an external force is applied, it can provide higher elasticity and help the optical adhesive layer 23 to restore its original thickness.
  • the material of the first support and/or the second support and/or the third support is any one of metal oxide, ceramic material or transparent metal electrode material kind.
  • the modulus of elasticity of the first support column and/or the second support column and/or the third support body is 50-250 GPa.
  • the light transmittance of the first support column and/or the second support column and/or the third support body is greater than 92%, and/or, the first support column and/or The refractive index of the second support column and/or the third support body is 1.47-1.48, and/or, the first support column and/or the second support column and/or the third support body The haze is less than 0.5%.
  • the first support in the optical adhesive layer on the display unit layer by arranging the first support in the optical adhesive layer on the display unit layer, it can provide support for the optical adhesive layer or improve the elasticity, and reduce the deformation of the optical adhesive layer when it is squeezed, so that it can To improve the problem that the sag on the surface of the flexible display screen causes the appearance of the screen to deteriorate and the display effect to decrease.
  • an embodiment of the present application also provides an electronic device, the electronic device includes the flexible display screen as described in any of the above embodiments, and can achieve the same technical effect. To avoid repetition, details are not repeated here. .
  • the electronic device in the embodiment of the present application may be a mobile electronic device or a non-mobile electronic device.
  • the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant). assistant, PDA), etc.
  • the non-mobile electronic device may be a personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., which are not specifically limited in this embodiment of the present application.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

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Abstract

一种柔性显示屏和电子设备。柔性显示屏包括显示单元层（21）、设置于显示单元层（21）上的光学胶层（23）以及设置于光学胶层（23）中的多个第一支撑体（26），每个第一支撑体（26）的横截面具有枝节状延伸结构，多个第一支撑体（26）的间隙均匀填充有光学胶。

Description

柔性显示屏和电子设备
相关申请的交叉引用
本申请主张在2021年05月26日在中国提交的中国专利申请No.202110576908.7的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于显示技术领域，具体涉及一种柔性显示屏和电子设备。
背景技术
随着柔性显示技术的发展，柔性显示屏越来越多的应用于移动终端中，为了维持显示屏的柔性，显示单元上仅有一超薄柔性玻璃进行保护，由于超薄柔性玻璃破裂时可能造成使用者被碎片割伤，因此上面会外贴一层保护材料，利用光学胶将保护材料与超薄柔性玻璃粘在一起。当有异物掉落到柔性显示屏表面或使用手写笔在柔性显示屏表面书写时，屏幕表面会产生变形，引起光学胶形成永久性的变形，造成屏幕表面产生凹坑，影响屏幕外观。
发明内容
本申请实施例的目的是提供一种柔性显示屏和电子设备，能够解决现有技术中柔性显示屏表面容易产生凹坑，影响屏幕外观和显示效果的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种柔性显示屏，该柔性显示屏包括：显示单元层、设置于所述显示单元层上的光学胶层以及设置于所述光学胶层中的多个第一支撑体，每个所述第一支撑体的横截面具有枝节状延伸结构，所述多个第一支撑体的间隙均匀填充有光学胶。
可选的，所述第一支撑体的横截面形状包括三叉形、十字形、米字形、卡字形、井字形中的至少一种。
可选的，所述柔性显示屏还包括第二支撑体，所述第一支撑体和所述第 二支撑体竖直均匀分布于所述光学胶层中，且所述第一支撑体和所述第二支撑体间隔设置。
可选的，所述第二支撑体的横截面形状包括：圆形、多边形、三叉形、十字形、米字形、卡字形、井字形中的至少一种。
可选的，所述第一支撑体的高度大于或等于所述光学胶层的厚度，所述第二支撑体的高度小于所述光学胶层的厚度。
可选的，所述多个第一支撑体中相邻的第一支撑体之间互相隔开形成空隙。
可选的，相邻的所述第一支撑体之间具有第三支撑体，连接相邻的所述第一支撑体的枝节状延伸结构通过所述第三支撑体连接，且所述第三支撑体的高度低于所述第一支撑体。
可选的，相邻的所述第一支撑体之间通过所述枝节状延伸结构连接形成封闭的网格状结构单元。
可选的，所述第一支撑体的高度小于所述光学胶层的厚度。
可选的，所述柔性显示屏还包括柔性玻璃层，所述柔性玻璃层设置于所述显示单元层和所述光学胶层之间。
可选的，所述柔性显示屏还包括保护材料层和硬膜，所述保护材料层和所述硬膜依次设置于所述光学胶层的背离所述显示单元层的一侧。
可选的，所述保护材料层采用透明聚酰亚胺材料或聚对苯二甲酸乙二醇酯材料制作。
可选的，所述第一支撑体的材料为金属氧化物、陶瓷材料或透明金属电极材料中的任一种。
第二方面，本申请实施例提供了一种电子设备，该电子设备包括如第一方面所述的柔性显示屏。
在本申请实施例中，通过在显示单元层上的光学胶层内设置第一支撑体，可以为光学胶层提供支撑或提高弹力，减小光学胶层被挤压时产生的形变，从而可以改善柔性显示屏表面的凹陷造成屏幕外观变差以及显示效果降低的 问题。
附图说明
图1为相关技术中的一种柔性显示屏的结构示意图；
图2为柔性显示屏表面的凹坑的示意图；
图3为本申请实施例提供的一种柔性显示屏的结构示意图；
图4为本申请实施例提供的第一支撑体在光学胶层内的分布示意图；
图5为本申请实施例提供的另一种柔性显示屏的结构示意图；
图6为本申请实施例提供的第一支撑体和第二支撑体在光学胶层内的分布示意图；
图7为本申请实施例提供的再一种柔性显示屏的结构示意图；
图8为本申请实施例提供的网格状结构的截面示意图之一；
图9为本申请实施例提供的网格状结构的截面示意图之二；
图10为本申请实施例提供的网格状结构的截面示意图之三；
图11为本申请实施例提供的网格状结构的截面示意图之四；
图12为本申请实施例提供的又一种柔性显示屏的结构示意图；
图13为本申请实施例提供的网格状结构的截面示意图之五；
图14为本申请实施例提供的网格状结构的截面示意图之六；
图15为本申请实施例提供的网格状结构的截面示意图之七；
图16为本申请实施例提供的网格状结构的截面示意图之八；
图17为本申请实施例提供的具有第一支撑体和第三支撑体的柔性显示屏的结构示意图；
图18为本申请实施例提供的第一支撑体和第三支撑体的连接示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是 全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的柔性显示屏和电子设备进行详细地说明。
请参考图1和图2，图1为相关技术中的一种柔性显示屏的结构示意图，图2为柔性显示屏表面的凹坑的示意图。如图1和图2所示，所述柔性显示屏包括显示单元11、柔性玻璃12、光学胶13和保护材料14。当有异物掉落到柔性显示屏表面或使用手写笔在柔性显示屏表面书写时，柔性显示屏表面产生变形，引起光学胶13形成永久性的变形，造成屏幕表面形成凹坑15，凹坑15会影响柔性显示屏的外观和显示效果。
由此，本申请实施例提供了一种柔性显示屏，所述柔性显示屏包括显示单元层设置于所述显示单元层上的光学胶层以及设置于所述光学胶层中的多个第一支撑体，每个所述第一支撑体的横截面具有枝节状延伸结构，所述多个第一支撑体的间隙均匀填充有光学胶。也就是说，本申请实施例通过在光学胶层中插设第一支撑体，可以为光学胶层提供支撑或提高弹力，减小光学胶层被挤压时产生的形变，从而可以改善柔性显示屏表面的凹陷造成屏幕外观变差以及显示效果降低的问题。
本申请的一些实施例中，所述第一支撑体的横截面形状包括三叉形、十字形、米字形、卡字形、井字形中的至少一种，也就是说，所述横截面形状可以为三叉形、十字形、米字形等规则的放射状图案，所述放射状图案即由 中心点以及自所述中心点向外发散的若干放射线构成，所述横截面形状也可以是不规则的形状，例如卡字形等，或者如枝杈状。通过将所述第一支撑体设置成上述形状，利用枝节状延伸结构在横截面方向进行延伸，可以增强第一支撑体在受挤压时的支撑作用和/或弹力作用，从而使光学胶层产生更小的形变。示例性的，在一些可选的实施方式中，所述第一支撑体的横截面形状可以为三叉形、十字形、米字形中的任意一者，所述三叉形即可以视为由中心点以及自所述中心点向外发散的三根放射线构成，同样的，十字形即可以视为由中心点以及自所述中心点向外发散的四根放射线构成，米字形即可以视为由中心点以及自所述中心点向外发散的六根放射线构成。
请参考图3和图4，图3为本申请实施例提供的一种柔性显示屏的结构示意图，图4为本申请实施例提供的第一支撑体在光学胶层内的分布示意图。本申请的一些实施例中，所述柔性显示屏包括显示单元层21、柔性玻璃层22、光学胶层23、保护材料层24以及硬膜25，所述保护材料层24和所述硬膜25依次设置于所述光学胶层23的背离所述显示单元层21的一侧。其中，可选的，显示单元层21由显示单元构成，所述显示单元可以由液晶显示器(liquid crystal display，LCD)，有机发光二极管(organic light-emitting diode，OLED)、发光二极体(light emitting diode，LED)中的任一者或者多者组成；为了维持柔性显示屏的柔性，显示单元层21上设置有柔性玻璃层22，柔性玻璃层22可以为超薄柔性玻璃(ultra thin glass，UTG)；由于柔性玻璃层22破裂时可能造成使用者被碎片割伤，因此，在柔性玻璃层22上会外贴一层保护材料层24，保护材料层24可以是透明聚酰亚胺(color-less polyimide，CPI)或聚对苯二甲酸乙二醇酯(polyethylene terephthalate，PET)等材料；而柔性玻璃层22与保护材料层24之间还设置有光学胶层23，光学胶层23由光学胶(optical clear adhesive，OCA)构成，以将柔性玻璃层22与保护材料层24粘在一起；在保护材料层24表面设置硬膜25可以增加保护材料层24表面的硬度，降低被硬物刮伤的风险。第一支撑体26即设置于光学胶层23内，以为光学胶层23提供支撑或提高弹力。
如图3所示，本申请的一些实施例中，所述第一支撑体26的高度小于所述光学胶层23的厚度。也就是说，第一支撑体26的一端抵在柔性玻璃层22上，但是另一端并未接触到保护材料层24，而是被光学胶层23完全覆盖。在这种情况下，第一支撑体26未能对保护材料层24直接形成有效的支撑，但可以在光学胶层23受到外力挤压时提高弹力的作用，并且，由于第一支撑体26未接触到保护材料层24的表面，因此不会影响光学胶层23与保护材料层24之间的黏着面积。可选的，如图4所示，所述第一支撑体26的数量为多个，多个第一支撑体26竖直均匀分布于光学胶层23内。
请参考图5和图6，图5为本申请实施例提供的另一种柔性显示屏的结构示意图，图6为本申请实施例提供的第一支撑体和第二支撑体在光学胶层内的分布示意图。本申请的另一些实施例中，与上述实施例不同的是，所述柔性显示屏还包括第二支撑体27，可选的，第一支撑体26的高度大于或等于光学胶层23的厚度，而第二支撑体27的高度小于所述光学胶层23的厚度。也就是说，第一支撑体26的一端抵设在柔性玻璃层22上，而另一端则抵设在保护材料层24上，第二支撑体27则是一端抵设在柔性玻璃层22上，但是另一端并未接触到保护材料层24，而是被光学胶层23完全覆盖；在这种情况下，第一支撑柱26可以对保护材料层24起到直接支撑的作用，从而维持光学胶层23的厚度，而第二支撑体27未能对保护材料层24直接形成有效的支撑，但可以在光学胶层23受到外力挤压时提高弹力的作用，可以帮助光学胶层23恢复原有的厚度，并且，由于第一支撑体26未接触到保护材料层24的表面，因此不会影响光学胶层23与保护材料层24之间的黏着面积。
可选的，如图6所示，所述第一支撑体26和所述第二支撑体27的数量为多个，多个第一支撑体26和多个第二支撑体27竖直分布于光学胶层23内，较优的，多个第一支撑体26和多个第二支撑体27在光学胶层23内可以呈均匀分布。
在一些实施例中，第二支撑体27的横截面形状包括：圆形、多边形、三叉形、十字形、米字形、卡字形、井字形中的至少一种。也就是说，多个第 二支撑体27可以的横截面形状可以为同一形状，也可以为不同的形状；例如，第二支撑体27的横截面形状可以为圆形、多边形等封闭的形状，也可以为三叉形、十字形、米字形、卡字形、井字形等部分封闭或不封闭的形状，即第二支撑体27的横截面也可以具有枝节状延伸结构。
请参考图7至图11，图7为本申请实施例提供的再一种柔性显示屏的结构示意图，图8为本申请实施例提供的网格状结构的截面示意图之一，图9为本申请实施例提供的网格状结构的截面示意图之二，图10为本申请实施例提供的网格状结构的截面示意图之三，图11为本申请实施例提供的网格状结构的截面示意图之四。在本申请的一些实施例中，所述第一支撑体26的数量为多个，多个第一支撑体26中至少部分相邻的第一支撑体26之间通过所述枝节状延伸结构互相连接形成封闭的网格状结构单元，也就是说，由于第一支撑体26的横截面具有枝节状延伸结构，因此，相邻的第一支撑体26之间可以直接通过所述枝节状延伸结构互相连接起来，从而形成封闭的网格状结构单元，示例性的，第一支撑体26的横截面形状为放射状，例如可以为三叉形、十字形、米字形等，由此，组成的封闭的网格状结构单元可以对应为三角形、四边形、六边形等多边形，如图8和图9中，第一支撑体26的横截面形状均为三叉形，图8中具体为Y形，而图9中具体为T形。较优的，所有第一支撑体26中相邻的第一支撑体26之间均互相连接，以形成一整个封闭的网格状结构，形成的封闭的网格状结构中每一个网格状结构单元的形状均相同。通过第一支撑体26之间互相连接形成封闭的网格状结构单元，可以将光学胶层23中的光学胶固定在封闭的网格状结构单元内，降低光学胶的流动性，从而达到减小光学胶层23变形的目的。
可选的，在一些可选的实施方式中，所述第一支撑体26的高度可以小于所述光学胶层23的厚度，此时，高出于第一支撑体26的部分光学胶将不被网格状结构所限制，从而在制作光学胶层23时可以利用光学胶的平流性保证光学胶层23的厚度均一，而第一支撑体26起到提高光学胶层23弹性的作用，帮助光学胶层23恢复原有的厚度。在另一些可选的实施方式中，第一支撑体 26的高度大于或等于光学胶层23的厚度，此时，光学胶层23内的所有光学胶将全部被分隔到形成的网格状结构单元内，从而最大限度地降低光学胶的流动性，减小光学胶层23变形，并且第一支撑体26也可以起到直接支撑作用，支撑保护材料层24。其中，光学胶层23内的所有第一支撑体26可以一体成型。
请参考图12至图16，图12为本申请实施例提供的又一种柔性显示屏的结构示意图，图13为本申请实施例提供的网格状结构的截面示意图之五，图14为本申请实施例提供的网格状结构的截面示意图之六，图15为本申请实施例提供的网格状结构的截面示意图之七，图16为本申请实施例提供的网格状结构的截面示意图之八。在本申请的另一些实施例中，所述第一支撑体26的数量为多个，多个第一支撑体26中相邻的第一支撑体26之间互相隔开形成空隙，也就是说，相邻的第一支撑体26之间可以不连接起来，从而使得所有第一支撑体26相当于形成了具有开口的网格状结构，由于第一支撑体26的横截面形状为放射状，例如可以为三叉形、十字形、米字形等，由此，组成的具有开口的网格状结构的最小重复单元可以对应为三角形、四边形、六边形等多边形结构，但是这些最小重复单元的至少一条边上因为空隙的存在而形成了至少一个开口，如图13和图14中，第一支撑体26的横截面形状均为三叉形，图13中具体为Y形，而图14中具体为T形。较优的，所有第一支撑体26形成的具有开口的网格状结构的每一个最小重复单元的形状均相同。通过第一支撑体26之间互相隔开不连接，形成具有开口的网格状结构，在制作光学胶层23时可以允许光学胶在固化前可以通过开口流动，从而改善柔性玻璃层22与保护材料层24之间贴合的平整性；而在制作完成后，又可以将光学胶限定在具有开口的网格状结构内，降低光学胶的流动性，从而达到减小光学胶层23变形的目的。可选的，在一些可选的实施方式中，所述第一支撑体26的高度可以小于所述光学胶层23的厚度，此时，高出于第一支撑体26的部分光学胶将不被网格状结构所限制，从而在制作光学胶层23时可以利用光学胶的平流性保证光学胶层23的厚度均一，而第一支撑体26起 到提高光学胶层23弹性的作用，帮助光学胶层23恢复原有的厚度。在另一些可选的实施方式中，第一支撑体26的高度大于或等于光学胶层23的厚度，此时，光学胶层23内的所有光学胶将全部被分隔到形成的网格状结构中的每一最小网格内，从而最大限度地降低光学胶的流动性，减小光学胶层23变形。
请参考图17和图18，图17为本申请实施例提供的具有第一支撑体和第三支撑体的柔性显示屏的结构示意图，图18为本申请实施例提供的第一支撑体和第三支撑体的连接示意图。在本申请的再一些实施例中，所述柔性显示屏包括第一支撑体26和第三支撑体28，第一支撑体26和第三支撑体28插设于光学胶层23中，其中，第一支撑体26的高度大于或等于光学胶层23的厚度，而所述第二支撑体26的高度小于所述光学胶层23的厚度，可选的，第三支撑体28的横截面形状为一字形，或者称之为条形，相邻的两个第一支撑体26之间设置有一第三支撑体28，相邻的两个第一支撑体26的枝节状延伸结构通过设置于两者之间的第三支撑体28实现互相连接，也就是说，位于相邻的两个第一支撑体26之间的第三支撑体28的平行于所述显示单元层方向上的两端分别与所述相邻的两个第一支撑体的枝节状延伸结构连接，由此，所有第一支撑体26和第三支撑体28相当于共同形成了网格状结构单元，示例性的，第一支撑体26的横截面形状为放射状，例如可以为三叉形、十字形、米字形等，而第三支撑体28的横截面形状为一字形，因此，由此，组成的网格状结构的最小重复单元可以对应为三角形、四边形、六边形等多边形结构，但是由于第三支撑体28的高度小于第一支撑体26的高度，因此这些最小重复单元的至少一条边上因为高度差的存在而形成了至少一个开口。通过使相邻第一支撑体26的枝节状延伸结构之间通过第三支撑体28进行互相连接，形成具有开口的网格状结构，在制作光学胶层23时可以允许高于第三支撑体28的光学胶在固化前可以通过开口流动，从而改善柔性玻璃层22与保护材料层24之间贴合的平整性；而在制作完成后，又可以将光学胶限定在具有开口的网格状结构内，降低光学胶的流动性，从而达到减小光学胶层23变形的目的，并且第一支撑体26可以起到直接支撑作用，对保护材料层24形成有 效支撑，而第三支撑体28在被施加外力时，可以提供较高的弹性，帮助光学胶层23恢复原有的厚度。
本申请的一些实施例中，所述第一支撑体和/或所述第二支撑体和/或所述第三支撑体的材料为金属氧化物、陶瓷材料或透明金属电极材料中的任一种。可选的，所述第一支撑柱和/或所述第二支撑柱和/或所述第三支撑体的弹性模量为50～250Gpa。可选的，所述第一支撑柱和/或所述第二支撑柱和/或所述第三支撑体的光线透过率大于92％，和/或，所述第一支撑柱和/或所述第二支撑柱和/或所述第三支撑体折射率为1.47～1.48，和/或，所述第一支撑柱和/或所述第二支撑柱和/或所述第三支撑体的雾度小于0.5％。
在本申请实施例中，通过在显示单元层上的光学胶层内设置第一支撑体，可以为光学胶层提供支撑或提高弹力，减小光学胶层被挤压时产生的形变，从而可以改善柔性显示屏表面的凹陷造成屏幕外观变差以及显示效果降低的问题。
可选的，本申请实施例还提供一种电子设备，所述电子设备包括如上述任一实施例中所述的柔性显示屏，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，本申请实施例中的电子设备可以是移动电子设备，也可以为非移动电子设备。示例性的，移动电子设备可以为手机、平板电脑、笔记本电脑、掌上电脑、车载电子设备、可穿戴设备、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本或者个人数字助理(personal digital assistant，PDA)等，非移动电子设备可以为个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情 况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (14)

  1. 一种柔性显示屏，包括显示单元层、设置于所述显示单元层上的光学胶层以及设置于所述光学胶层中的多个第一支撑体，每个所述第一支撑体的横截面具有枝节状延伸结构，所述多个第一支撑体的间隙均匀填充有光学胶。
  2. 根据权利要求1所述的柔性显示屏，其中，所述第一支撑体的横截面形状包括三叉形、十字形、米字形、卡字形、井字形中的至少一种。
  3. 根据权利要求1所述的柔性显示屏，其中，还包括第二支撑体，所述第一支撑体和所述第二支撑体竖直均匀分布于所述光学胶层中，且所述第一支撑体和所述第二支撑体间隔设置。
  4. 根据权利要求3所述的柔性显示屏，其中，所述第二支撑体的横截面形状包括：圆形、多边形、三叉形、十字形、米字形、卡字形、井字形中的至少一种。
  5. 根据权利要求3所述的柔性显示屏，其中，所述第一支撑体的高度大于或等于所述光学胶层的厚度，所述第二支撑体的高度小于所述光学胶层的厚度。
  6. 根据权利要求1所述的柔性显示屏，其中，所述多个第一支撑体中相邻的第一支撑体之间互相隔开形成空隙。
  7. 根据权利要求6所述的柔性显示屏，其中，相邻的所述第一支撑体之间具有第三支撑体，连接相邻的所述第一支撑体的枝节状延伸结构通过所述第三支撑体连接，且所述第三支撑体的高度低于所述第一支撑体。
  8. 根据权利要求1所述的柔性显示屏，其中，相邻的所述第一支撑体之间通过所述枝节状延伸结构连接形成封闭的网格状结构单元。
  9. 根据权利要求8所述的柔性显示屏，其中，所述第一支撑体的高度小于所述光学胶层的厚度。
  10. 根据权利要求1所述的柔性显示屏，其中，还包括柔性玻璃层，所述柔性玻璃层设置于所述显示单元层和所述光学胶层之间。
  11. 根据权利要求1所述的柔性显示屏，其中，还包括保护材料层和硬膜，所述保护材料层和所述硬膜依次设置于所述光学胶层的背离所述显示单元层的一侧。
  12. 根据权利要求11所述的柔性显示屏，其中，所述保护材料层采用透明聚酰亚胺材料或聚对苯二甲酸乙二醇酯材料制作。
  13. 根据权利要求1所述的柔性显示屏，其中，所述第一支撑体的材料为金属氧化物、陶瓷材料或透明金属电极材料中的任一种。
  14. 一种电子设备，包括如权利要求1-13中任一项所述的柔性显示屏。
PCT/CN2022/093856 2021-05-26 2022-05-19 柔性显示屏和电子设备 WO2022247724A1 (zh)

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