WO2022000613A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2022000613A1
WO2022000613A1 PCT/CN2020/103262 CN2020103262W WO2022000613A1 WO 2022000613 A1 WO2022000613 A1 WO 2022000613A1 CN 2020103262 W CN2020103262 W CN 2020103262W WO 2022000613 A1 WO2022000613 A1 WO 2022000613A1
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WO
WIPO (PCT)
Prior art keywords
support layer
display panel
display device
flexible display
bending area
Prior art date
Application number
PCT/CN2020/103262
Other languages
English (en)
French (fr)
Inventor
刘亚丽
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/971,911 priority Critical patent/US11809232B2/en
Publication of WO2022000613A1 publication Critical patent/WO2022000613A1/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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • 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
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present application relates to the technical field of displays, and in particular, to a display device.
  • a flexible display device is such a new type of display product with flexibility.
  • a user can fold or roll the flexible display device as required to reduce the size of the display device and improve the portability of the display device.
  • the foldable display device can also be unfolded to obtain a larger display screen.
  • the performance improvement of flexible display devices has become the focus of researchers.
  • the foldable display screen is prone to wrinkling such as "creases” and "white lines” during the repeated bending and flattening process.
  • the current screen factory mainly uses extremely thin amorphous materials or metals. It is attached under the panel to ensure the bending performance while increasing the overall stiffness of the panel during bending through amorphous or metal. The increase in stiffness can greatly reduce "creases", “white marks” The undulating height of the line".
  • the mechanism during folding in order to avoid excessive extrusion of the display area in the bending area by the mechanism during folding, resulting in defective products, when the panel is actually attached to the metal, it is rarely completely attached.
  • An embodiment of the present invention provides a display device, comprising:
  • a flexible display panel includes a display surface and a non-display surface arranged oppositely, the flexible display panel further includes at least one bending area and at least two non-bending areas, the bending area and the non-bending area are The bending regions are arranged in the same direction, and the bending regions are located between two adjacent non-bending regions;
  • the support layer is located on the non-display surface of the flexible display panel
  • the adhesive layer is located between the support layer and the flexible display panel, and bonds the support layer and the flexible display panel;
  • the bending area is in a water drop shape or a U shape
  • the support layer includes amorphous material or stainless steel material; the thickness of the support layer is less than or equal to 200 microns.
  • the support layer and the flexible display panel have the same size.
  • the support layer in the non-bending area, is completely adhered to the flexible display panel through the adhesive layer, and in the bending area, the support layer and the flexible display panel are completely attached.
  • the flexible display panel is not attached, and the support layer is located in the hollow area of the bending area.
  • the distance L in the bending region that does not adhere to the adhesive layer is:
  • the R1 is the lateral radius of the flexible display panel in the bending area after the display device is bent
  • the R2 is the flexible display panel in the bending area after the display device is bent vertical radius.
  • the support layer includes a plurality of segments, and the support layer includes a hard support layer and a soft support layer.
  • the hard supporting layer in the non-bending area, is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • Flexible display panel bonding in the non-bending area, the hard supporting layer is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • the soft support layer includes silica gel or silicone rubber, and the viscosity of the soft support layer is 400,000 centipoise to 700,000 centipoise.
  • the thicknesses of the soft support layer and the hard support layer are the same.
  • An embodiment of the present invention also provides a display device, comprising:
  • a flexible display panel includes a display surface and a non-display surface arranged oppositely, the flexible display panel further includes at least one bending area and at least two non-bending areas, the bending area and the non-bending area are The bending regions are arranged in the same direction, and the bending regions are located between two adjacent non-bending regions;
  • the support layer is located on the non-display surface of the flexible display panel
  • the adhesive layer is located between the support layer and the flexible display panel, and bonds the support layer and the flexible display panel;
  • the bending area is in a water drop shape or a U shape.
  • the support layer includes an amorphous material or a stainless steel material.
  • the thickness of the support layer is less than or equal to 200 micrometers.
  • the support layer and the flexible display panel have the same size.
  • the support layer in the non-bending area, is completely adhered to the flexible display panel through the adhesive layer, and in the bending area, the support layer and the flexible display panel are completely attached.
  • the flexible display panel is not attached, and the support layer is located in the hollow area of the bending area.
  • the distance L in the bending region that does not adhere to the adhesive layer is:
  • the R1 is the lateral radius of the flexible display panel in the bending area after the display device is bent
  • the R2 is the flexible display panel in the bending area after the display device is bent vertical radius.
  • the support layer includes a plurality of segments, and the support layer includes a hard support layer and a soft support layer.
  • the hard supporting layer in the non-bending area, is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • Flexible display panel bonding in the non-bending area, the hard supporting layer is attached to the flexible display panel, and in the bending area, the soft supporting layer is in contact with the flexible display panel.
  • the soft support layer includes silica gel or silicone rubber, and the viscosity of the soft support layer is 400,000 centipoise to 700,000 centipoise.
  • the thicknesses of the soft support layer and the hard support layer are the same.
  • the adhesive layer at the bending area is hollowed out, that is, the support layer in the bending area is not adhered to the flexible display panel. Because there is no adhesive layer in the bending area, the When the display device is bent, the bending area is not constrained by the mechanism, which can be easily bent; when the display device is unfolded, the deformation of the adhesive layer will not cause "creases" and "waves”. Phenomenon. And a segmented support layer structure is also provided, and a soft support layer is used at the bending area.
  • the soft support layer When the display device is bent, the soft support layer can reduce the stress from the non-bending area, reduce the deformation of the adhesive layer, the soft support layer is resistant to bending, and can also maintain all
  • the display device After the display device is folded, it has a water drop shape or a U shape; when the display device is unfolded, the soft support layer has good flatness, which will reduce the occurrence of "creases” and "waves". Therefore, using the display device provided by the embodiment of the present invention, after repeated folding operations for many times and returning to the unfolded state, the flatness of the adhesive layer can be improved, and the adhesiveness between the adhesive layer and the functional layer to which it is bonded can be ensured. Avoid problems such as degumming, "creases" and "waves" on the display device.
  • FIG. 1 is a schematic structural diagram 1 of a display device provided in this embodiment.
  • FIG. 2A is a schematic diagram 1 of a bending structure of the display device provided in this embodiment.
  • FIG. 2B is a second schematic diagram of a bending structure of the display device provided in this embodiment.
  • FIG. 3 is a second schematic structural diagram of the display device provided in this embodiment.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features delimited with “first”, “second” may expressly or implicitly include one or more of said features. In the description of the present application, “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the embodiment of the present invention provides a display device, and the display device may be an OLED display device with a top emission structure or other flexible display device, which is not limited in the embodiment of the present invention, and the embodiment of the present invention takes a flexible display device as an example to explain. As shown in FIG. 1 to FIG.
  • a display device provided by the present invention includes a flexible display panel 101, the flexible display panel 101 includes a display surface and a non-display surface arranged oppositely, and the flexible display panel 101 further includes at least One bending area 20 and at least two non-bending areas: the non-bending area 10 and the non-bending area 30, the bending area 20 and the non-bending area 10 and the non-bending area 30 are along the same
  • the bending area 20 is located between the two adjacent non-bending areas 10 and the non-bending areas 30; at least one layer of support layer 102 is located in the flexible display On the non-display surface of the panel 101, the support layer 102 plays a role of supporting the flexible display panel 101, reducing the stress received by the flexible display panel 101; at least one layer of adhesive layer 103, the adhesive layer 103 is located in Between the support layer 102 and the flexible display panel 101, the support layer 102 and the flexible display panel 101 are bonded.
  • the bending region 20 is in a water drop shape or a U shape.
  • the material of the support layer 102 includes but is not limited to amorphous material or stainless steel SUS, and the thickness of the support layer 102 is within 200 microns.
  • the adhesive layer 103 includes OCA adhesive layer material.
  • FIG. 1 which is a schematic structural diagram of a display device provided in this embodiment
  • a support layer 102 of the same size as the flexible display panel 101 is used, that is, the support layer 102 is the same size as the flexible display panel 101 .
  • the flexible display panel 101 has the same size, and is attached to the flexible display panel 101 through the adhesive layer 103 .
  • the support layer 102 is completely adhered to the flexible display panel 101 through the adhesive layer 103; in the bending area 20.
  • the support layer 102 is not attached to the flexible display panel 101, that is, the support layer 102 is a hollow area in the bending area 20, and the hollow area is at the bending area 20, so The space formed between the support layer 102 and the flexible display panel 101 is not adhered.
  • This embodiment also proposes a method of experimental design to determine a reasonable distance of the non-adhesive layer in the bending area and a theoretical formula between each influencing factor.
  • the shape of the bending area of the display device provided in this embodiment after bending includes at least a water drop shape and a U shape.
  • the R1 is the lateral radius of the flexible display panel in the bending area after the display device is bent
  • the R2 is the flexible display panel in the bending area after the display device is bent vertical radius.
  • a water drop-shaped bending area is formed.
  • the radius of the bending area is 4 mm
  • the reasonable distance of the non-adhesive layer in the bending area is 38 mm to 44 mm.
  • the bending area is reasonable The distance of the non-adhesive layer is 26 mm to 30 mm; when the radius of the bending area is 1.5 mm, the reasonable distance of the non-adhesive layer in the bending area is 18 mm to 22 mm; that is, the bending The smaller the radius of the area, the smaller the reasonable distance of the non-adhesive layer in the bending area.
  • the reasonable distance of the non-adhesive layer in the bending area is 14.6 mm to 24 mm; when bending When the radius of the bending area is 3 mm, the reasonable distance of the non-adhesive layer in the bending area is 11.42 mm to 22 mm; when the radius of the bending area is 2 mm, the reasonable non-adhesive layer in the bending area is The distance is 8.28 mm to 18 mm; when the radius of the bending area is 1.5 mm, the reasonable distance of the non-adhesive layer in the bending area is 6.71 mm to 16 mm; that is, the bending area forms different bending
  • the folded shape has different effects on the reasonable distance of the non-adhesive layer in the folded area.
  • the display device includes a flexible display panel 101, and the flexible display panel 101 includes a display surface and a non-display surface arranged opposite to each other.
  • the flexible display panel 101 also It includes at least one bending area 20 and at least two non-bending areas: the non-bending area 10 and the non-bending area 30, the bending area 20 and the non-bending area 10, the non-bending area 30 Arranged in the same direction, the bending area 20 is located between two adjacent non-bending areas 10 and the non-bending area 30; at least one supporting layer 102 is located in the On the non-display surface of the flexible display panel 101, the support layer 102 plays a role of supporting the flexible display panel 101 and reduces the stress received by the flexible display panel 101; at least one layer of adhesive layer 103, the adhesive layer 103 is located between the support layer 102 and the flexible display panel 101 , and bonds the support layer 102 and the flexible display panel 101 .
  • the bending region 20 is in a water drop shape or a U shape.
  • the material of the support layer 102 includes but is not limited to amorphous material or stainless steel SUS, and the thickness of the support layer 102 is within 200 microns.
  • the adhesive layer 103 includes OCA adhesive layer material.
  • the support layer 102 is a segmented design, and the support layer 102 includes a hard support layer 1021 and a soft support layer 1022 .
  • the hard support layer 1021 is disposed in the non-bending area 10 and the non-bending area 30
  • the soft supporting layer 1022 is disposed in the bending area 20 .
  • the material of the hard support layer 1021 includes but is not limited to amorphous material or stainless steel SUS
  • the soft support layer 1022 is a flexible material that is resistant to bending
  • the soft support layer 1022 includes but is not limited to silica gel or silicon Rubber
  • the viscosity of the soft support layer 1022 is 400,000 cps ⁇ 700,000 cps.
  • the hard support layer 1021 is attached to the flexible display panel 101 through the adhesive layer 103
  • the The soft support layer 1022 is attached to the flexible display panel 101 through the adhesive layer 103 .
  • the thickness of the soft support layer 1022 and the hard support layer 1021 are the same.
  • a segmented support layer 102 is used to attach the flexible display panel 101 , and a hard support layer 1022 and the flexible display panel are used in the non-bending area 10 and the non-bending area 30 .
  • the attachment of the display panel 101 can ensure that when the display device is unfolded and tiled, it not only has the stiffness of the hand when pressed, but also has good flatness.
  • a bending-resistant soft support layer 1022 is used to adhere to the bending area 20 of the flexible display panel 101 , which can reduce the stress from the non-bending area and reduce the stress of the adhesive layer. deformation, the soft support layer 1022 is resistant to bending, and can also keep the display device in a water drop shape or a U shape after being folded.
  • the adhesive layer at the bending area is hollowed out, that is, the support layer in the bending area is not adhered to the flexible display panel. Because there is no adhesive layer in the bending area, the When the display device is bent, the bending area is not constrained by the mechanism, which can be easily bent; when the display device is unfolded, the deformation of the adhesive layer will not cause "creases" and "waves”. Phenomenon. And a segmented support layer structure is also provided, and a soft support layer is used at the bending area.
  • the soft support layer When the display device is bent, the soft support layer can reduce the stress from the non-bending area, reduce the deformation of the adhesive layer, the soft support layer is resistant to bending, and can also maintain all
  • the display device After the display device is folded, it has a water drop shape or a U shape; when the display device is unfolded, the soft support layer has good flatness, which will reduce the occurrence of "creases” and "waves". Therefore, using the display device provided by the embodiment of the present invention, after repeated folding operations for many times and returning to the unfolded state, the flatness of the adhesive layer can be improved, and the adhesiveness between the adhesive layer and the functional layer to which it is bonded can be ensured. Avoid problems such as degumming, "creases" and "waves" on the display device.
  • a display device provided by the embodiments of the present application has been introduced in detail above.
  • the principles and implementations of the present application are described in this paper by using specific examples.
  • the descriptions of the above embodiments are only used to help understand the technical solutions of the present application. and its core idea; those of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the corresponding
  • the essence of the technical solutions deviates from the scope of the technical solutions of the embodiments of the present application.

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  • Computer Hardware Design (AREA)
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  • General Engineering & Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本发明公开了一种显示装置，包括柔性显示面板，所述柔性显示面板包括至少一个弯折区域和至少两个非弯折区域；至少一层支撑层，至少一层胶层，所述胶层位于所述支撑层和所述柔性显示面板之间。本发明通过多种面板与支撑层在弯折区显示屏的贴合方法及合理的不贴胶距离理论计算公式，使弯折时显示屏能收到较少来自机构的约束。

Description

显示装置 技术领域
本申请涉及一种显示器技术领域，尤其涉及一种显示装置。
背景技术
随着显示技术的不断发展，为了满足不同的使用需求，各种具有不同特性的显示产品也随之应运而生。智能化、便携化、柔性化的发展趋势是当前电子设备的主要发展方向之一。柔性显示器相对于传统的平板显示器最突出的优势在于，突破了原有的二维显示的固有理念，将显示器的应用领域拓展到更多的便携式设备中。柔性显示装置即为这样一种具有挠性的新型显示产品，在使用时，用户可以根据需要将柔性显示装置进行折叠或者卷曲，以减小显示装置的尺寸，提高显示装置的便携性。或者，也可以将可折叠显示装置展开，以得到较大的显示画面。目前，柔性显示装置的性能改进已成为研究人员的关注重点。可折叠显示作为新一代柔性显示技术的发展方向，已经得到了业内的广泛关注。然而其中最重要的问题和难点在于，柔性显示器相对轻薄，整体的耐弯折性能和抗冲击性能较差，长时间弯折会引起柔性显示器的局部大变形量，可能导致柔性显示器中的高分子材料变性，从而在弯折区出现“折痕”、“白线”等现象，造成柔性显示器失效。
目前可折叠显示屏在反复弯折展平过程中很容易产生“折痕”、“白线”等起皱现象，除了改进材料本身特性外，目前屏厂主要采用极薄的非晶材料或者金属贴附在面板下方，以达到在保证弯折性能的同时，还能通过非晶或金属增加面板弯折时的整体挺性，挺性的增加可以很大程度上减少“折痕”、“白线”的起伏高度。但实际应用中为了规避折叠时弯折区的显示区受到机构过多的挤压，而产生不良品，所以面板与金属实际贴附时，很少完全贴合。不贴胶距离过小，会对面板产生拉扯力，反复弯折后面板极易产生显示异常，不贴胶距离过大，在反复弯折的过程中，会产生很大的“折痕”、“波浪”，所以合理的不贴胶距离及贴附方式可以提高折叠屏的综合使用性能。
技术问题
为了克服现有技术的不足，本申请实施例通过多种面板与支撑层在弯折区显示屏的贴合方法及合理的不贴胶距离理论计算公式，使弯折时显示屏能收到较少来自机构的约束，并且面板在展平时显示屏的“折痕”、“波浪”现象减缓。
技术解决方案
本发明提供的技术方案如下：
本发明实施例提供一种显示装置，包括:
柔性显示面板，所述柔性显示面板包括相对设置的显示面和非显示面，所述柔性显示面板还包括至少一个弯折区域和至少两个非弯折区域，所述弯折区域和所述非弯折区域沿同一方向排列，所述弯折区域位于相邻的两个所述非弯折区域之间；
至少一层支撑层，所述支撑层位于所述柔性显示面板的非显示面；
至少一层胶层，所述胶层位于所述支撑层和所述柔性显示面板之间，粘合所述支撑层和所述柔性显示面板；
所述显示装置折叠时，所述弯折区域呈水滴型或U型；
所述支撑层包括非晶材料或不锈钢材料；所述支撑层的厚度小于或等于200微米。
根据本发明实施例所提供的显示装置，所述支撑层与所述柔性显示面板具有相同尺寸。
根据本发明实施例所提供的显示装置，在所述非弯折区域，所述支撑层通过所述胶层与所述柔性显示面板完全贴合，在所述弯折区域，所述支撑层与所述柔性显示面板不贴合，所述支撑层位于所述弯折区域的镂空区域。
根据本发明实施例所提供的显示装置，所述弯折区域中不贴合所述胶层的间距L为：
L＝-1.35+4.85R1+0.193R2；
其中，所述R1为所述显示装置弯折后所述弯折区域中所述柔性显示面板 的横向半径，所述R2为所述显示装置弯折后所述弯折区域中所述柔性显示面板的纵向半径。
根据本发明实施例所提供的显示装置，所述支撑层包括多个分段，所述支撑层包括硬质支撑层和软质支撑层。
根据本发明实施例所提供的显示装置，在所述非弯折区域，所述硬质支撑层与所述柔性显示面板贴合，在所述弯折区域，所述软质支撑层与所述柔性显示面板贴合。
根据本发明实施例所提供的显示装置，所述软质支撑层包括硅胶或硅橡胶，所述软质支撑层的粘度为400,000厘泊～700,000厘泊。
根据本发明实施例所提供的显示装置，所述软质支撑层和所述硬质支撑层的厚度相同。
本发明实施例还提供一种显示装置，包括:
柔性显示面板，所述柔性显示面板包括相对设置的显示面和非显示面，所述柔性显示面板还包括至少一个弯折区域和至少两个非弯折区域，所述弯折区域和所述非弯折区域沿同一方向排列，所述弯折区域位于相邻的两个所述非弯折区域之间；
至少一层支撑层，所述支撑层位于所述柔性显示面板的非显示面；
至少一层胶层，所述胶层位于所述支撑层和所述柔性显示面板之间，粘合所述支撑层和所述柔性显示面板；
所述显示装置折叠时，所述弯折区域呈水滴型或U型。
根据本发明实施例所提供的显示装置，所述支撑层包括非晶材料或不锈钢材料。
根据本发明实施例所提供的显示装置，所述支撑层的厚度小于或等于200微米。
根据本发明实施例所提供的显示装置，所述支撑层与所述柔性显示面板具有相同尺寸。
根据本发明实施例所提供的显示装置，在所述非弯折区域，所述支撑层通 过所述胶层与所述柔性显示面板完全贴合，在所述弯折区域，所述支撑层与所述柔性显示面板不贴合，所述支撑层位于所述弯折区域的镂空区域。
根据本发明实施例所提供的显示装置，所述弯折区域中不贴合所述胶层的间距L为：
L＝-1.35+4.85R1+0.193R2；
其中，所述R1为所述显示装置弯折后所述弯折区域中所述柔性显示面板的横向半径，所述R2为所述显示装置弯折后所述弯折区域中所述柔性显示面板的纵向半径。
根据本发明实施例所提供的显示装置，所述支撑层包括多个分段，所述支撑层包括硬质支撑层和软质支撑层。
根据本发明实施例所提供的显示装置，在所述非弯折区域，所述硬质支撑层与所述柔性显示面板贴合，在所述弯折区域，所述软质支撑层与所述柔性显示面板贴合。
根据本发明实施例所提供的显示装置，所述软质支撑层包括硅胶或硅橡胶，所述软质支撑层的粘度为400,000厘泊～700,000厘泊。
根据本发明实施例所提供的显示装置，所述软质支撑层和所述硬质支撑层的厚度相同。
有益效果
本发明实施例所提供的显示装置，通过将位于弯折区域处的胶层镂空处理，即弯折区域的支撑层与柔性显示面板不贴合处理，因为弯折区域没有胶层，因而在所述显示装置弯折时，所述弯折区没有受到来自机构的约束，可以方便弯折；在所述显示装置展开时，也不会出现胶层的形变而产生“折痕”、“波浪”现象。以及还提供了一种分段式支撑层结构，在位于所述弯折区域处，使用软质支撑层。所述软质支撑层在所述显示装置弯折时，可以减小来自所述非弯折区域的应力，减小了胶层的形变，所述软质支撑层耐弯折，还可以保持所述显示装置折叠后呈一种水滴型或U型；在所述显示装置展开时，所述软质支撑 层具有良好的平整性，会减少出现“折痕”、“波浪”现象。因此，采用本发明实施例提供的显示装置，在经过多次反复折叠操作并恢复至展开状态后，能够提高胶层的平整性，保证胶层与其粘合的功能层之间的粘合性，避免使显示装置出现脱胶、产生“折痕”、“波浪”等问题。
附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本实施例所提供的显示装置的结构示意图一。
图2A为本实施例所提供的显示装置的弯折结构示意图一。
图2B为本实施例所提供的显示装置的弯折结构示意图二。
图3为本实施例所提供的显示装置的结构示意图二。
本发明的实施方式
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，所描述的实施例仅仅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。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由 此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本发明实施例提供了一种显示装置，所述显示装置可以是顶发射结构的OLED显示装置或其他柔性显示装置，本发明实施例对此不做限定，本发明实施例以柔性显示装置为例来说明。如图1至图3所示，本发明所提供的一种显示装置包括柔性显示面板101，所述柔性显示面板101包括相对设置的显示面 和非显示面，所述柔性显示面板101还包括至少一个弯折区域20和至少两个非弯折区域：非弯折区域10与非弯折区域30，所述弯折区域20和所述非弯折区域10、所述非弯折区域30沿同一方向排列，所述弯折区域20位于相邻的两个所述非弯折区域10、所述非弯折区域30之间；至少一层支撑层102，所述支撑层102位于所述柔性显示面板101的非显示面，所述支撑层102起到支撑所述柔性显示面板101的作用，减少所述柔性显示面板101所收到的应力；至少一层胶层103，所述胶层103位于所述支撑层102和所述柔性显示面板101之间，粘合所述支撑层102和所述柔性显示面板101。其中，在所述显示装置折叠时，所述弯折区域20呈水滴型或U型。所述支撑层102的材料包括但不限于非晶材料或不锈钢SUS，所述支撑层102的厚度在200微米以内。所述胶层103包括OCA胶层材料。
具体地，如图1所示，为本实施例所提供的一种显示装置的结构示意图，参阅图1，采用与所述柔性显示面板101同等大小的支撑层102，即所述支撑层102与所述柔性显示面板101为相同大小，通过所述胶层103与所述柔性显示面板101贴合。如图所示，在所述非弯折区域10和所述非弯折区域30，所述支撑层102通过所述胶层103与所述柔性显示面板101完全贴合；在所述弯折区域20，所述支撑层102与所述柔性显示面板101不贴合，即所述支撑层102在所述弯折区域20为镂空区域，所述镂空区域是在所述弯折区域20处，所述支撑层102与所述柔性显示面板101之间不贴合所形成的空间。通过在所述非弯折区域10与所述非弯折区域30采用全贴附而在所述弯折区域20采用不贴附的处理，既可以保证所述显示装置在展开平铺时所述显示装置具备良好的平整度，又可以保证所述显示装置弯折时，所述柔性显示面板101能收到较少来自机构的约束和应力。
本实施例还提出一种通过实验设计的方法，来确定出在所述弯折区合理的不贴胶层的距离以及与各影响因素之间的理论公式。如图2A和图2B所示，为本实施例所提供的显示装置在弯折后的所述弯折区的形态，至少包括水滴型和U型。测出所述显示装置弯折后所述弯折区域中所述柔性显示面板的横向 半径，记为R1；测出所述显示装置弯折后所述弯折区域中所述柔性显示面板的纵向半径，记为R2；随后通过大量的仿真数据进行推导，可以得到一个所述弯折区域中不贴合所述胶层的间距L(如图1所示的镂空区域的间距L)的计算公式：
L＝-1.35+4.85R1+0.193R2；
其中，所述R1为所述显示装置弯折后所述弯折区域中所述柔性显示面板的横向半径，所述R2为所述显示装置弯折后所述弯折区域中所述柔性显示面板的纵向半径。
如下表所示，为不同弯折形式和不同弯折半径对应的合理不贴胶层的间距范围表。
Type R＝4mm R＝3mm R＝2mm R＝1.5mm
水滴型 38-44mm 32-40mm 26-30mm 18-22mm
U型 14.6-24mm 11.42-22mm 8.28-18mm 6.71-16mm
如上表所示，在所述显示装置弯折后呈水滴型的弯折区域，当弯折区域的半径为4毫米时，所述弯折区合理的不贴胶层的距离为38毫米到44毫米；当弯折区域的半径为3毫米时，所述弯折区合理的不贴胶层的距离为32毫米到40毫米；当弯折区域的半径为2毫米时，所述弯折区合理的不贴胶层的距离为26毫米到30毫米；当弯折区域的半径为1.5毫米时，所述弯折区合理的不贴胶层的距离为18毫米到22毫米；即所述弯折区域的半径越小，所述弯折区合理的不贴胶层的距离越小。在所述显示装置弯折后呈U型的弯折区域，当弯折区域的半径为4毫米时，所述弯折区合理的不贴胶层的距离为14.6毫米到24毫米；当弯折区域的半径为3毫米时，所述弯折区合理的不贴胶层的距离为11.42毫米到22毫米；当弯折区域的半径为2毫米时，所述弯折区合理的不贴胶层的距离为8.28毫米到18毫米；当弯折区域的半径为1.5毫米时，所述弯折区合理的不贴胶层的距离为6.71毫米到16毫米；即所述弯折区形成不同的弯折形状对所述弯折区合理的不贴胶层的距离有不同的影响。
本实施例还提供一种显示装置，如图3所示，所述显示装置包括柔性显示面板101，所述柔性显示面板101包括相对设置的显示面和非显示面，所述柔性显示面板101还包括至少一个弯折区域20和至少两个非弯折区域：非弯折区域10与非弯折区域30，所述弯折区域20和所述非弯折区域10、所述非弯折区域30沿同一方向排列，所述弯折区域20位于相邻的两个所述非弯折区域10、所述非弯折区域30之间；至少一层支撑层102，所述支撑层102位于所述柔性显示面板101的非显示面，所述支撑层102起到支撑所述柔性显示面板101的作用，减少所述柔性显示面板101所收到的应力；至少一层胶层103，所述胶层103位于所述支撑层102和所述柔性显示面板101之间，粘合所述支撑层102和所述柔性显示面板101。其中，在所述显示装置折叠时，所述弯折区域20呈水滴型或U型。所述支撑层102的材料包括但不限于非晶材料或不锈钢SUS，所述支撑层102的厚度在200微米以内。所述胶层103包括OCA胶层材料。
具体地，所述支撑层102为分段式设计，所述支撑层102包括硬质支撑层1021和软质支撑层1022。所述硬质支撑层1021设置在所述非弯折区域10与所述非弯折区域30，所述软质支撑层1022设置在所述弯折区域20。其中所述硬质支撑层1021材料包括但不限于非晶材料或不锈钢SUS，所述软质支撑层1022为耐弯折的软质材料，所述软质支撑层1022包括但不限于硅胶或硅橡胶，所述软质支撑层1022的粘度为400,000厘泊～700,000厘泊。在所述非弯折区域10与所述非弯折区域30，所述硬质支撑层1021通过所述胶层103与所述柔性显示面板101贴合，在所述弯折区域20，所述软质支撑层1022通过胶层103与所述柔性显示面板101贴合。所述软质支撑层1022和所述硬质支撑层1021的厚度相同。
具体地，采用分段式的所述支撑层102与所述柔性显示面板101进行贴附，在所述非弯折区域10与所述非弯折区域30用硬质支撑层1022与所述柔性显示面板101贴附，可以保证在所述显示装置展开平铺状态下，不仅具有按压时的手感挺性还具有良好的平整度。而在弯折区域20采用耐弯折的软质支撑层 1022粘附到所述柔性显示面板101的弯折区域20，可以减小来自所述非弯折区域的应力，减小了胶层的形变，所述软质支撑层1022耐弯折，还可以保持所述显示装置折叠后呈一种水滴型或U型。
本发明实施例所提供的显示装置，通过将位于弯折区域处的胶层镂空处理，即弯折区域的支撑层与柔性显示面板不贴合处理，因为弯折区域没有胶层，因而在所述显示装置弯折时，所述弯折区没有受到来自机构的约束，可以方便弯折；在所述显示装置展开时，也不会出现胶层的形变而产生“折痕”、“波浪”现象。以及还提供了一种分段式支撑层结构，在位于所述弯折区域处，使用软质支撑层。所述软质支撑层在所述显示装置弯折时，可以减小来自所述非弯折区域的应力，减小了胶层的形变，所述软质支撑层耐弯折，还可以保持所述显示装置折叠后呈一种水滴型或U型；在所述显示装置展开时，所述软质支撑层具有良好的平整性，会减少出现“折痕”、“波浪”现象。因此，采用本发明实施例提供的显示装置，在经过多次反复折叠操作并恢复至展开状态后，能够提高胶层的平整性，保证胶层与其粘合的功能层之间的粘合性，避免使显示装置出现脱胶、产生“折痕”、“波浪”等问题。
以上对本申请实施例所提供的一种显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (18)

  1. 一种显示装置，包括:
    柔性显示面板，所述柔性显示面板包括相对设置的显示面和非显示面，所述柔性显示面板还包括至少一个弯折区域和至少两个非弯折区域，所述弯折区域和所述非弯折区域沿同一方向排列，所述弯折区域位于相邻的两个所述非弯折区域之间；
    至少一层支撑层，所述支撑层位于所述柔性显示面板的非显示面；
    至少一层胶层，所述胶层位于所述支撑层和所述柔性显示面板之间，粘合所述支撑层和所述柔性显示面板；
    所述显示装置折叠时，所述弯折区域呈水滴型或U型；
    所述支撑层包括非晶材料或不锈钢材料；所述支撑层的厚度小于或等于200微米。
  2. 根据权利要求1所述的显示装置，其中所述支撑层与所述柔性显示面板具有相同尺寸。
  3. 根据权利要求2所述的显示装置，其中在所述非弯折区域，所述支撑层通过所述胶层与所述柔性显示面板完全贴合，在所述弯折区域，所述支撑层与所述柔性显示面板不贴合，所述支撑层位于所述弯折区域的镂空区域。
  4. 根据权利要求3所述的显示装置，其中所述弯折区域中不贴合所述胶层的间距L为：
    L＝-1.35+4.85 R1+0.193 R2；
    其中，所述R1为所述显示装置弯折后所述弯折区域中所述柔性显示面板的横向半径，所述R2为所述显示装置弯折后所述弯折区域中所述柔性显示面板的纵向半径。
  5. 根据权利要求1所述的显示装置，其中所述支撑层包括多个分段，所述支撑层包括硬质支撑层和软质支撑层。
  6. 根据权利要求5所述的显示装置，其中在所述非弯折区域，所述硬质支撑层与所述柔性显示面板贴合，在所述弯折区域，所述软质支撑层与所述柔 性显示面板贴合。
  7. 根据权利要求6所述的显示装置，其中所述软质支撑层包括硅胶或硅橡胶，所述软质支撑层的粘度为400,000厘泊～700,000厘泊。
  8. 根据权利要求7所述的显示装置，其中所述软质支撑层和所述硬质支撑层的厚度相同。
  9. 一种显示装置，包括:
    柔性显示面板，所述柔性显示面板包括相对设置的显示面和非显示面，所述柔性显示面板还包括至少一个弯折区域和至少两个非弯折区域，所述弯折区域和所述非弯折区域沿同一方向排列，所述弯折区域位于相邻的两个所述非弯折区域之间；
    至少一层支撑层，所述支撑层位于所述柔性显示面板的非显示面；
    至少一层胶层，所述胶层位于所述支撑层和所述柔性显示面板之间，粘合所述支撑层和所述柔性显示面板；
    所述显示装置折叠时，所述弯折区域呈水滴型或U型。
  10. 根据权利要求9所述的显示装置，其中所述支撑层包括非晶材料或不锈钢材料。
  11. 根据权利要求9所述的显示装置，其中所述支撑层的厚度小于或等于200微米。
  12. 根据权利要求9所述的显示装置，其中所述支撑层与所述柔性显示面板具有相同尺寸。
  13. 根据权利要求12所述的显示装置，其中在所述非弯折区域，所述支撑层通过所述胶层与所述柔性显示面板完全贴合，在所述弯折区域，所述支撑层与所述柔性显示面板不贴合，所述支撑层位于所述弯折区域的镂空区域。
  14. 根据权利要求13所述的显示装置，其中所述弯折区域中不贴合所述胶层的间距L为：
    L＝-1.35+4.85 R1+0.193 R2；
    其中，所述R1为所述显示装置弯折后所述弯折区域中所述柔性显示面板 的横向半径，所述R2为所述显示装置弯折后所述弯折区域中所述柔性显示面板的纵向半径。
  15. 根据权利要求9所述的显示装置，其中所述支撑层包括多个分段，所述支撑层包括硬质支撑层和软质支撑层。
  16. 根据权利要求15所述的显示装置，其中在所述非弯折区域，所述硬质支撑层与所述柔性显示面板贴合，在所述弯折区域，所述软质支撑层与所述柔性显示面板贴合。
  17. 根据权利要求16所述的显示装置，其中所述软质支撑层包括硅胶或硅橡胶，所述软质支撑层的粘度为400,000厘泊～700,000厘泊。
  18. 根据权利要求17所述的显示装置，其中所述软质支撑层和所述硬质支撑层的厚度相同。
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