WO2019105035A1 - 可分离的柔性显示结构、柔性显示屏及其制造方法、显示装置 - Google Patents

可分离的柔性显示结构、柔性显示屏及其制造方法、显示装置 Download PDF

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Publication number
WO2019105035A1
WO2019105035A1 PCT/CN2018/093759 CN2018093759W WO2019105035A1 WO 2019105035 A1 WO2019105035 A1 WO 2019105035A1 CN 2018093759 W CN2018093759 W CN 2018093759W WO 2019105035 A1 WO2019105035 A1 WO 2019105035A1
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Prior art keywords
flexible display
display screen
flexible
substrate
support substrate
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PCT/CN2018/093759
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English (en)
French (fr)
Inventor
杨阳
王善鹤
张迪
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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
Publication of WO2019105035A1 publication Critical patent/WO2019105035A1/zh
Priority to US16/597,854 priority Critical patent/US11087647B2/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • 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 disclosure relates to the field of display technologies, and in particular, to a detachable flexible display structure, a flexible display screen, a method of manufacturing the same, and a display device.
  • the display includes a display area (Active Area, referred to as AA area) and a non-display area (non-AA area).
  • AA area Active Area
  • non-AA area non-display area
  • the non-display area may be required to be bent.
  • the non-display area is bent to the back of the screen to reduce the width of the frame.
  • the present disclosure provides a detachable flexible display structure having a display area and a non-display area located outside the display area;
  • the detachable flexible display structure comprises:
  • a flexible display screen formed on the support substrate and separable from the support substrate; the flexible display screen is formed with an arch portion enclosing the rib at a position corresponding to the rib So that the flexible display screen can be bent at the arch.
  • the above separable flexible display structure after separating the support substrate from the flexible display screen, can reduce the stress generated when the flexible display screen is bent at the arch portion due to the tendency of the arch portion to automatically bend, thereby preventing the peripheral metal trace from being easily formed. Breaking improves the reliability of the flexible display.
  • the height of the rib is greater than the thickness of the flexible display screen.
  • the rib has a semi-circular cross section.
  • the rib has a radius of 1 mm to 5 mm.
  • the ratio of the width of the arch portion to the width of the non-display region is 1:10 to 1:2.
  • the arch has a width of 2 mm to 10 mm and the non-display area has a width of 20 mm.
  • the separable flexible display structure further includes a driving circuit unit located in the non-display area; the driving circuit unit is located outside the arch.
  • the rib is located at a position corresponding to an intermediate position of the non-display area of the support substrate.
  • the flexible display screen comprises:
  • the flexible substrate is an ultra-thin glass.
  • the ultrathin glass has a thickness of from 30 ⁇ m to 70 ⁇ m or from 0.1 mm to 0.2 mm.
  • the present disclosure also provides a flexible display screen having a display area and a non-display area located outside the display area;
  • An arch is formed on the surface of the non-display area on the flexible display screen such that the flexible display screen is bendable at the arch.
  • the flexible display screen includes a laminated flexible substrate and a display unit, the display unit being formed on the flexible substrate.
  • the arch portion since the arch portion has a tendency of automatic bending, the stress generated when the flexible display screen is bent at the arch portion can be reduced, so that the peripheral metal trace is not easily broken, and the reliability of the flexible display screen is improved.
  • the present disclosure also provides a display device including the above-described flexible display screen.
  • the arch portion of the flexible display screen has a tendency of automatic bending, the stress generated when the flexible display screen is bent at the arch portion can be reduced, so that the peripheral metal trace is not easily broken, and the reliability of the flexible display screen is improved. Sex.
  • the present disclosure also provides a method of fabricating a flexible display screen.
  • the manufacturing method includes:
  • the flexible display screen has a non-display area, and a rib is formed on a surface of the support substrate on the non-display area;
  • the flexible display screen is formed with an arch portion enclosing the rib at a position corresponding to the rib so that the flexible display screen is The arch portion can be bent;
  • the method further includes:
  • a driving circuit unit is disposed in a non-display area of the separated flexible display screen; the driving circuit unit is located outside the arch portion.
  • the flexible display screen includes a laminated flexible substrate and a display unit formed on the flexible substrate, the flexible substrate being formed on the support substrate.
  • a rib is formed on a surface of the support substrate on the non-display area, including forming a rib on a surface of the support substrate on the non-display area by press-fitting.
  • the flexible display screen is formed on the ribbed support substrate, including forming the flexible display screen on the ribbed support substrate using a deposition process.
  • the flexible display screen has a display area disposed at a position of the support substrate adjacent to the display area.
  • the support substrate is a rigid substrate.
  • FIG. 1 is a schematic structural view of a separable flexible display structure according to an embodiment
  • FIG. 2 is a plan view showing a separable flexible display structure of an embodiment
  • FIG. 3 is a schematic structural view of a flexible display screen before being bent according to an embodiment
  • FIG. 4 is a schematic structural view of a flexible display screen after being bent according to an embodiment.
  • the detachable flexible display structure 100 of an embodiment has a display area 110 and a non-display area 120 located outside the display area 110 .
  • the non-display area 120 (ie, the non-AA area) is located in a peripheral area of the detachable flexible display structure 100. Peripheral metal traces (not shown) for transmitting signals may be provided in the non-display area 120. Of course, it can be understood that the non-display area 120 includes, but is not limited to, the above-mentioned peripheral metal traces.
  • the detachable flexible display structure 100 includes a support substrate 130 and a flexible display screen 140.
  • the surface of the support substrate 130 on the non-display area 120 has a rib 131.
  • a rigid substrate is typically employed as the support substrate 130, such as a glass substrate.
  • the rib 131 extends in a direction in which the flexible display screen 140 can be bent.
  • the support substrate 130 may be one layer or more.
  • the materials of the respective sub-layers of the support substrate 130 may be the same or different.
  • the support substrate 130 may include a stacked first sub-layer and a second sub-layer.
  • the material of the first sub-layer is glass
  • the material of the second sub-layer is photoresist.
  • each sublayer can also be other materials.
  • the flexible display screen 140 is formed on the support substrate 130 and is separable from the support substrate 130.
  • the flexible display screen 140 is formed with an arch portion 141 enclosing the rib 131 at a position corresponding to the rib 131 so that the flexible display screen 140 can be bent at the arch portion 141.
  • the flexible display screen 140 may include a laminated flexible substrate 142 and a display unit 143. Wherein, the flexible substrate 142 is formed on the support substrate 130. The display unit 143 is formed on the flexible substrate 142. Of course, it can be understood that the structure of the flexible display screen 140 is not limited thereto. Flexible displays may also include other functional film layers, such as encapsulation layers.
  • the flexible substrate 142 may be ultra-thin glass.
  • the ultra-thin glass has a certain degree of stiffness and has the function of supporting the display unit 143. At the same time, the ultra-thin glass has a certain toughness and is favorable for bending.
  • the ultra-thin glass may have a thickness of 0.1 mm to 2 mm. More preferably, the ultrathin glass may have a thickness of 30 ⁇ m to 70 ⁇ m.
  • the height of the rib 131 (R in the present embodiment, as shown in FIG. 1) is greater than the thickness h of the flexible display screen 140.
  • the purpose is to make the curvature of the arch portion 141 formed on the rib 131 larger, so that the flexible display screen 140 can be automatically bent after the flexible display screen 140 is separated from the support substrate 130, which is beneficial to a large degree of reduction. Small bending stress.
  • the rib 131 may have a semicircular cross section. Since the rib 131 has a semicircular cross section and the radius of curvature of each point on the semicircle is the same, the radius of curvature on the inner wall of the arch 141 formed on the rib 131 is the same. It is advantageous to make the subsequent flexible display screen 140 be automatically bent at the arch portion 141 to be uniform, so that the bending stress distribution is uniform, and the partial bending stress is prevented from being broken.
  • the radius of the rib 131 may be 1 mm to 5 mm.
  • the radius of the rib 131 is 1 mm to 5 mm, the flexible display screen is naturally bent after being separated from the support substrate, and the artificial bending stress is reduced.
  • cross-sectional shape of the rib 131 is not limited thereto. It can also be set according to the actual situation, as long as the rib 131 has a certain curvature.
  • the ratio of the width w1 of the arch portion 141 to the width w2 of the non-display region 120 may be 1:10 to 1:2.
  • the width w1 of the arch portion 141 may be 2 mm to 10 mm, and the width w2 of the non-display region 120 may be 20 mm.
  • the ribs 131 may be disposed adjacent to the display area 110, as shown in FIGS. 1 and 2.
  • the arch portion 141 can also be disposed adjacent to the display area 110.
  • some of the components of the non-display area 120 are located on the side (bent portion) of the flexible display screen 140, and the remaining portions are located on the back side of the flexible display screen 140.
  • the screen ratio of the effective display area in the flexible display 140 can be increased.
  • the detachable flexible display structure 100 may further include a driving circuit unit 150 located in the non-display area 120 on the basis of the foregoing embodiments.
  • the drive circuit unit 150 is located outside the arch portion 141. Therefore, at least a portion of the peripheral metal trace for transmitting signals and power between the display area 110 and the driving circuit unit 150 is located at the arch portion 141. Since the arch portion 141 causes the flexible display screen 140 to be automatically bent after the flexible display screen 140 is separated from the support substrate 130, the bending stress is reduced, so that the peripheral metal trace is not easily broken and fails.
  • the above separable flexible display structure after separating the support substrate from the flexible display screen, can reduce the stress generated when the flexible display screen is bent at the arch portion due to the tendency of the arch portion to automatically bend, thereby preventing the peripheral metal trace from being easily formed. Breaking improves the reliability of the flexible display.
  • the flexible display screen 140 of an embodiment has a display area 110 and a non-display area 120 located outside the display area 110 .
  • the flexible display screen 140 is formed with an arch portion 141 on the surface of the non-display area 120 so that the flexible display screen 140 can be bent at the arch portion 141.
  • the flexible display screen 140 may include a laminated flexible substrate 142 and a display unit 143. Wherein, the flexible substrate 142 is formed on the support substrate 130. The display unit 143 is formed on the flexible substrate 142.
  • flexible displays may also include other functional film layers, such as encapsulation layers.
  • the arch portion since the arch portion has a tendency of automatic bending, the stress generated when the flexible display screen is bent at the arch portion can be reduced, so that the peripheral metal trace is not easily broken, and the reliability of the flexible display screen is improved.
  • Supporting substrate 130 is provided.
  • a rigid substrate is typically employed as the support substrate 130, such as a glass substrate. At this time, the surface of the support substrate 130 is a flat surface.
  • the flexible display screen has a non-display area 120.
  • the rib 131 is formed on the surface of the support substrate 130 on the non-display area 120, and the support substrate 130 having the ribs 131 is obtained.
  • the ribs 131 may be formed on the surface of the support substrate 130 on the non-display area 120 by press-fitting.
  • a mold having a groove having a surface corresponding to the shape of the rib 131 is used, and the mold is pressed against the support substrate 130 under a certain temperature condition, so that the surface of the support substrate 130 on the non-display area 120 can be A rib 131 is formed.
  • the rib 131 of the present embodiment may be disposed at a position of the support substrate 130 near the display area 110.
  • the position of the rib 131 is not limited thereto, and may be located at a position corresponding to other positions of the non-display area 120 of the support substrate 130, for example, an intermediate position.
  • the flexible display screen 140 is formed with an arch portion 141 enclosing the rib 131 at a position corresponding to the rib 131 so that the flexible display screen 140 is at the arch portion. 141 can be bent.
  • the flexible display screen 140 may be formed on the support substrate 130 having the ribs 131 by a process such as deposition.
  • the arch portion 141 of the present embodiment can be disposed adjacent to the display area 110.
  • the position of the arch portion 141 is not limited thereto, and may be located at other positions of the non-display area 120, such as an intermediate position.
  • the flexible display screen 140 may also be provided with the driving circuit unit 150 in the non-display area 120.
  • the drive circuit unit 150 is located outside the arch portion 141.
  • the flexible display screen 140 may include a laminated flexible substrate 142 and a display unit 143.
  • the flexible display screen 140 is naturally bent.
  • the arch portion 141 is located at the edge of the flexible display screen 140, and the side where the driving circuit unit 150 is located is bent downward to the display area 110. Below.
  • the arch portion since the arch portion has a tendency of automatic bending, the stress generated when the flexible display screen is bent at the arch portion can be reduced, so that the peripheral metal trace is not easily broken, and the reliability of the flexible display screen is improved. Sex.
  • the present disclosure also provides a display device including the above-described flexible display screen.
  • the display device may be a mobile phone, a tablet computer or the like.
  • the arch portion of the flexible display screen has a tendency of automatic bending, the stress generated when the flexible display screen is bent at the arch portion can be reduced, so that the peripheral metal trace is not easily broken, and the reliability of the flexible display screen is improved. Sex.

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Abstract

一种可分离的柔性显示结构（100）、柔性显示屏（140）及其制造方法、显示装置。可分离的柔性显示结构（100）具有显示区（110）以及位于显示区（110）外侧的非显示区（120）。可分离的柔性显示结构（100）包括：支撑基底（130），支撑基底（130）的位于非显示区（120）的表面具有凸棱（131）；以及柔性显示屏（140），柔性显示屏（140）形成于支撑基底（130）上且与支撑基底（130）可分离；柔性显示屏（140）在与凸棱（131）对应的位置形成有包裹凸棱（131）的拱部（141），以使柔性显示屏（140）在拱部（131）可弯折。将支撑基底（130）与柔性显示屏（140）分离之后，由于拱部（131）具有自动弯曲的趋势，能够减少将柔性显示屏（140）在拱部（141）弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏（140）的可靠性。

Description

可分离的柔性显示结构、柔性显示屏及其制造方法、显示装置 技术领域
本公开涉及显示技术领域，特别是涉及一种可分离的柔性显示结构、柔性显示屏及其制造方法、显示装置。
背景技术
显示屏包括显示区(Active Area，简称AA区)以及非显示区(非AA区)，为了达到某些功能，会要求非显示区能够弯折。例如为了实现窄边框化，将非显示区弯折到屏体的背面，从而减少边框宽度。
但是，对于目前的显示屏，在非显示区的弯折过程中，非显示区中的外围金属走线易断裂，从而造成显示屏的屏体出现不良。
发明内容
基于此，有必要对现有技术中外围金属走线易断裂的问题，提供一种不易造成外围金属走线断裂的可分离的柔性显示结构、柔性显示屏、显示装置以及柔性显示屏的制造方法。
本公开提供一种可分离的柔性显示结构，所述可分离的柔性显示结构具有显示区以及位于所述显示区外侧的非显示区；
所述可分离的柔性显示结构包括：
支撑基底，所述支撑基底的位于所述非显示区的表面具有凸棱；
以及柔性显示屏，所述柔性显示屏形成于所述支撑基底上且与所述支撑基底可分离；所述柔性显示屏在与所述凸棱对应的位置形成有包裹所述凸棱的拱部，以使所述柔性显示屏在所述拱部可弯折。
上述可分离的柔性显示结构，将支撑基底与柔性显示屏分离之后，由于拱部具有自动弯曲的趋势，能够减少将柔性显示屏在拱部弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏的可靠性。
在其中一个实施例中，所述凸棱的高度大于所述柔性显示屏的厚度。
在其中一个实施例中，所述凸棱的截面为半圆形。
在其中一个实施例中，所述凸棱的半径为1mm～5mm。
在其中一个实施例中，所述拱部的宽度与所述非显示区的宽度的比例为1:10～1:2。
在其中一个实施例中，所述拱部的宽度为2mm～10mm，所述非显示区的宽度为20mm。
在其中一个实施例中，所述可分离的柔性显示结构还包括位于所述非显示区的驱动电路单元；所述驱动电路单元位于所述拱部的外侧。
在其中一个实施例中，所述凸棱位于所述支撑基底的与所述非显示区的中间位置相应的位置。
在其中一个实施例中，所述柔性显示屏包括：
柔性基底，所述柔性基底形成于所述支撑基底上；
以及显示单元，所述显示单元形成于所述柔性基底上。
在其中一个实施例中，所述柔性基底为超薄玻璃。
在其中一个实施例中，所述超薄玻璃的厚度为30μm～70μm或0.1mm～0.2mm。
本公开还提供一种柔性显示屏，所述柔性显示屏具有显示区以及位于所述显示区外侧的非显示区；
所述柔性显示屏上在所述非显示区的表面形成有拱部，以使所述柔性显示屏在所述拱部可弯折。
在其中一个实施例中，所述柔性显示屏包括层叠的柔性基底以及显示单元，所述显示单元形成于所述柔性基底上。
上述柔性显示屏中，由于拱部具有自动弯曲的趋势，能够减少将柔性显示屏在拱部弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏的可靠性。
此外，本公开还提供一种显示装置，包括上述的柔性显示屏。
上述显示装置中，由于柔性显示屏的拱部具有自动弯曲的趋势，能够减少 将柔性显示屏在拱部弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏的可靠性。
本公开还提供一种柔性显示屏的制造方法。所述制造方法包括：
提供支撑基底；
所述柔性显示屏具有非显示区，在所述支撑基底的位于所述非显示区的表面形成凸棱；
在所述具有凸棱的支撑基底上形成所述柔性显示屏，所述柔性显示屏在与所述凸棱对应的位置形成有包裹所述凸棱的拱部，以使所述柔性显示屏在所述拱部可弯折；
将所述具有凸棱的支撑基底与所述柔性显示屏分离，得到分离后的柔性显示屏。
在其中一个实施例中，在所述将所述具有凸棱的支撑基底与所述柔性显示屏分离，得到分离后的柔性显示屏之后，还包括：
在所述分离后的柔性显示屏的非显示区设置驱动电路单元；所述驱动电路单元位于所述拱部的外侧。
在其中一个实施例中，所述柔性显示屏包括层叠的柔性基底以及显示单元，所述显示单元形成于所述柔性基底上，所述柔性基底形成于所述支撑基底上。
在其中一个实施例中，在所述支撑基底的位于所述非显示区的表面形成凸棱，包括采用压合的方式在所述支撑基底的位于所述非显示区的表面形成凸棱。
在其中一个实施例中，在所述具有凸棱的支撑基底上形成所述柔性显示屏，包括采用沉积工艺在所述具有凸棱的支撑基底上形成所述柔性显示屏。
在其中一个实施例中，所述柔性显示屏具有显示区，所述凸棱设置在所述支撑基底的靠近所述显示区的位置。
在其中一个实施例中，所述支撑基底为刚性基板。
附图说明
图1为一实施方式的可分离的柔性显示结构的结构示意图；
图2为一实施方式的可分离的柔性显示结构的平面示意图；
图3为一实施方式的柔性显示屏弯折前的结构示意图；
图4为一实施方式的柔性显示屏弯折后的结构示意图。
具体实施方式
为使本公开的上述目的、特征和优点能够更加明显易懂，下面结合附图对本公开的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本公开。但是本公开能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本公开内涵的情况下做类似改进，因此本公开不受下面公开的具体实施例的限制。
请参见图1和图2，一实施方式的可分离的柔性显示结构100具有显示区110以及位于显示区110外侧的非显示区120。
其中，非显示区120(即非AA区)位于可分离的柔性显示结构100的外围区域。在非显示区120中可以设有用于传递信号的外围金属走线(未示出)。当然，可以理解的是，非显示区120中包括但不限于上述外围金属走线。
在本公开中，可分离的柔性显示结构100包括支撑基底130以及柔性显示屏140。
其中，支撑基底130的位于非显示区120的表面具有凸棱131。通常采用刚性基板作为支撑基底130，例如玻璃基底。凸棱131沿着柔性显示屏140可弯折的方向延伸。
此外，支撑基底130可以是一层或者一层以上。当支撑基底130为两层或者两层以上时，支撑基底130的各个子层的材质可以相同或者不同。例如，支撑基底130可以包括层叠的第一子层和第二子层。优选的，第一子层的材质为玻璃，第二子层的材质为光刻胶。当然，各个子层还可以为其他材质。其中，柔性显示屏140形成于支撑基底130上且与支撑基底130可分离。柔性显示屏140在与凸棱131对应的位置形成有包裹凸棱131的拱部141，以使柔性显示屏140在拱部141可弯折。
在本公开中，柔性显示屏140可以包括层叠的柔性基底142以及显示单元143。其中，柔性基底142形成于支撑基底130上。显示单元143形成于柔性基 底142上。当然，可以理解的是，柔性显示屏140的结构不限于此。柔性显示屏还可能包括其他功能膜层，例如封装层等。
在前述实施方式的基础上，柔性基底142可以为超薄玻璃。超薄玻璃具有一定的挺度，具有支撑显示单元143的作用，同时，超薄玻璃具有一定的韧性，有利于弯折。
较优的，超薄玻璃的厚度可以为0.1mm～2mm。更优的，超薄玻璃的厚度可以为30μm～70μm。
在前述实施方式的基础上，凸棱131的高度(本实施方式中的R，如图1所示)大于柔性显示屏140的厚度h。目的是使在凸棱131上形成的拱部141的弯曲程度较大，从而后续将柔性显示屏140与支撑基底130分离之后能够增加柔性显示屏140自动弯曲的趋势，有利于较大程度地减小弯曲应力。
在前述实施方式的基础上，凸棱131的截面可以为半圆形。由于凸棱131的截面为半圆形，且半圆形上每一点的曲率半径都相同，那么形成于凸棱131上的拱部141内壁上的曲率半径都相同。有利于使后续柔性显示屏140在拱部141自动弯曲的程度均一，从而使弯曲应力分布均一，避免因局部的弯曲应力过大而断裂。
在前述实施方式的基础上，凸棱131的半径可以为1mm～5mm。当凸棱131的半径为1mm～5mm时，柔性显示屏与支撑基底分离之后自然弯曲，减少人为弯曲应力。
需要说明的是，凸棱131的截面形状不限于此。亦可根据实际情况进行设置，只要凸棱131具有一定的弧度即可。
在前述实施方式的基础上，拱部141的宽度w1与非显示区120的宽度w2的比例可以为1:10～1:2。较优的，拱部141的宽度w1可以为2mm～10mm，非显示区120的宽度w2可以为20mm。这样既能在非显示区120实现弯折，又能同时把驱动电路单元150固定在非显示区120。
在前述实施方式的基础上，凸棱131可以靠近显示区110设置，如图1和图2所示。相应的，拱部141也可以靠近显示区110设置。这样当后续柔性显示屏140在拱部141弯折之后，非显示区120的部分元件位于柔性显示屏140 的侧面(弯折部分)，而其余部分则均位于柔性显示屏140的背面。能够增加柔性显示屏140中有效显示区域的屏占比。
当然，凸棱131的位置不以此为限，亦可位于非显示区120的其他位置，例如中间位置。在前述实施方式的基础上，可分离的柔性显示结构100还可以包括位于非显示区120的驱动电路单元150。驱动电路单元150位于拱部141的外侧。因此，至少有部分用以在显示区110与驱动电路单元150之间传递信号和电力的外围金属走线位于拱部141。由于拱部141使得后续将柔性显示屏140与支撑基底130分离之后柔性显示屏140自动弯曲，减小弯曲应力，因此不易造成外围金属走线断裂而失效。
上述可分离的柔性显示结构，将支撑基底与柔性显示屏分离之后，由于拱部具有自动弯曲的趋势，能够减少将柔性显示屏在拱部弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏的可靠性。
请参见图3和图4，一实施方式的柔性显示屏140具有显示区110以及位于显示区110外侧的非显示区120。
其中，柔性显示屏140上在非显示区120的表面形成有拱部141，以使柔性显示屏140在拱部141可弯折。
在前述实施方式的基础上，柔性显示屏140可以包括层叠的柔性基底142以及显示单元143。其中，柔性基底142形成于支撑基底130上。显示单元143形成于柔性基底142上。当然，可以理解的是，柔性显示屏140的结构不限于此。柔性显示屏还可能包括其他功能膜层，例如封装层等。
上述柔性显示屏中，由于拱部具有自动弯曲的趋势，能够减少将柔性显示屏在拱部弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏的可靠性。
一实施方式的柔性显示屏的制造方法，包括：
S10、提供支撑基底130。
通常采用刚性基板作为支撑基底130，例如玻璃基底。此时，支撑基底130的表面为平面。
S20、柔性显示屏具有非显示区120，在支撑基底130的位于非显示区120 的表面形成凸棱131，得到具有凸棱131的支撑基底130。
可以采用压合的方式在支撑基底130的位于非显示区120的表面形成凸棱131。例如采用一个表面设有与上述凸棱131对应形状的凹槽的模具，在一定的温度条件下，将上述模具与支撑基底130压合，则可在支撑基底130的位于非显示区120的表面形成凸棱131。
请一并参见图2，本实施方式的凸棱131可以设置在支撑基底130的靠近显示区110的位置。当然，凸棱131的位置不以此为限，亦可位于支撑基底130的与非显示区120的其他位置相应的位置，例如中间位置。
S30、在具有凸棱131的支撑基底130上形成柔性显示屏140，柔性显示屏140在与凸棱131对应的位置形成有包裹凸棱131的拱部141，以使柔性显示屏140在拱部141可弯折。
可以采用沉积等工艺在具有凸棱131的支撑基底130上形成柔性显示屏140。
请一并参见图2，本实施方式的拱部141可以靠近显示区110设置。当然，拱部141的位置不以此为限，亦可位于非显示区120的其他位置，例如中间位置。
S40、将支撑基底130与柔性显示屏140分离，得到柔性显示屏140。
请一并参见图3，将支撑基底130与柔性显示屏140分离之后，柔性显示屏140还可以在非显示区120设置驱动电路单元150。驱动电路单元150位于拱部141的外侧。
本实施方式中，柔性显示屏140可以包括层叠的柔性基底142以及显示单元143。
请参见图4，将支撑基底130与柔性显示屏140分离之后，柔性显示屏140自然弯曲，拱部141位于柔性显示屏140的边缘，驱动电路单元150所在的一侧朝下弯曲至显示区110的下方。
上述柔性显示屏的制造方法中，由于拱部具有自动弯曲的趋势，能够减少将柔性显示屏在拱部弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏的可靠性。
此外，本公开还提供一种显示装置，包括上述的柔性显示屏。其中，显示装置可以是手机、平板电脑等。
上述显示装置中，由于柔性显示屏的拱部具有自动弯曲的趋势，能够减少将柔性显示屏在拱部弯折时产生的应力，因此不易造成外围金属走线断裂，提高了柔性显示屏的可靠性。
以上所述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。
以上所述实施例仅表达了本公开的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本公开的专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本公开构思的前提下，还可以做出若干变形和改进，这些都属于本公开的保护范围。因此，本公开专利的保护范围应以所附权利要求为准。

Claims (21)

  1. 一种可分离的柔性显示结构，其中，所述可分离的柔性显示结构具有显示区以及位于所述显示区外侧的非显示区；
    所述可分离的柔性显示结构包括：
    支撑基底，所述支撑基底的位于所述非显示区的表面具有凸棱；
    以及柔性显示屏，所述柔性显示屏形成于所述支撑基底上且与所述支撑基底可分离；所述柔性显示屏在与所述凸棱对应的位置形成有包裹所述凸棱的拱部，以使所述柔性显示屏在所述拱部可弯折。
  2. 根据权利要求1所述的可分离的柔性显示结构，其中，所述凸棱的高度大于所述柔性显示屏的厚度。
  3. 根据权利要求1所述的可分离的柔性显示结构，其中，所述凸棱的截面为半圆形。
  4. 根据权利要求3所述的可分离的柔性显示结构，其中，所述凸棱的半径为1mm～5mm。
  5. 根据权利要求1所述的可分离的柔性显示结构，其中，所述拱部的宽度与所述非显示区的宽度的比例为1:10～1:2。
  6. 根据权利要求1所述的可分离的柔性显示结构，其中，所述拱部的宽度为2mm～10mm，所述非显示区的宽度为20mm。
  7. 根据权利要求1所述的可分离的柔性显示结构，其中，所述可分离的柔性显示结构还包括位于所述非显示区的驱动电路单元；所述驱动电路单元位于所述拱部的外侧。
  8. 根据权利要求1所述的可分离的柔性显示结构，其中，所述凸棱位于所述支撑基底的与所述非显示区的中间位置相应的位置。
  9. 根据权利要求1所述的可分离的柔性显示结构，其中，所述柔性显示屏包括：
    柔性基底，所述柔性基底形成于所述支撑基底上；
    以及显示单元，所述显示单元形成于所述柔性基底上。
  10. 根据权利要求9所述的可分离的柔性显示结构，其中，所述柔性基底为超薄玻璃。
  11. 根据权利要求10所述的可分离的柔性显示结构，其中，所述超薄玻璃的厚度为30μm～70μm或0.1mm～0.2mm。
  12. 一种柔性显示屏，其中，所述柔性显示屏具有显示区以及位于所述显示区外侧的非显示区；
    所述柔性显示屏上在所述非显示区的表面形成有拱部，以使所述柔性显示屏在所述拱部可弯折。
  13. 根据权利要求10所述的柔性显示屏，其中，所述柔性显示屏包括层叠的柔性基底以及显示单元，所述显示单元形成于所述柔性基底上。
  14. 一种显示装置，其中，包括如权利要求11或12所述的柔性显示屏。
  15. 一种柔性显示屏的制造方法，所述制造方法包括：
    提供支撑基底；
    所述柔性显示屏具有非显示区，在所述支撑基底的位于所述非显示区的表面形成凸棱；
    在所述具有凸棱的支撑基底上形成所述柔性显示屏，所述柔性显示屏在与所述凸棱对应的位置形成有包裹所述凸棱的拱部，以使所述柔性显示屏在所述拱部可弯折；
    将所述具有凸棱的支撑基底与所述柔性显示屏分离，得到分离后的柔性显示屏。
  16. 根据权利要求14所述的柔性显示屏的制造方法，其中，在所述将所述具有凸棱的支撑基底与所述柔性显示屏分离，得到分离后的柔性显示屏之后，还包括：
    在所述分离后的柔性显示屏的非显示区设置驱动电路单元；所述驱动电路单元位于所述拱部的外侧。
  17. 根据权利要求14所述的柔性显示屏的制造方法，其中，所述柔性显示屏包括层叠的柔性基底以及显示单元，所述显示单元形成于所述柔性基底上， 所述柔性基底形成于所述支撑基底上。
  18. 根据权利要求14所述的柔性显示屏的制造方法，其中，在所述支撑基底的位于所述非显示区的表面形成凸棱，包括采用压合的方式在所述支撑基底的位于所述非显示区的表面形成凸棱。
  19. 根据权利要求14所述的柔性显示屏的制造方法，其中，在所述具有凸棱的支撑基底上形成所述柔性显示屏，包括采用沉积工艺在所述具有凸棱的支撑基底上形成所述柔性显示屏。
  20. 根据权利要求14所述的柔性显示屏的制造方法，其中，所述柔性显示屏具有显示区，所述凸棱设置在所述支撑基底的靠近所述显示区的位置。
  21. 根据权利要求14所述的柔性显示屏的制造方法，其中，所述支撑基底为刚性基板。
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