WO2021147677A1 - 柔性显示面板贴合装置 - Google Patents

柔性显示面板贴合装置 Download PDF

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Publication number
WO2021147677A1
WO2021147677A1 PCT/CN2021/070502 CN2021070502W WO2021147677A1 WO 2021147677 A1 WO2021147677 A1 WO 2021147677A1 CN 2021070502 W CN2021070502 W CN 2021070502W WO 2021147677 A1 WO2021147677 A1 WO 2021147677A1
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WO
WIPO (PCT)
Prior art keywords
display panel
flexible display
base
elastic
edge
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Application number
PCT/CN2021/070502
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English (en)
French (fr)
Inventor
刘少奎
青威
王志会
刘兴国
陈祖权
曾伟
沈丹平
魏悦
王策
汤强
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/425,337 priority Critical patent/US11826998B2/en
Publication of WO2021147677A1 publication Critical patent/WO2021147677A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B32B37/003—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid air inclusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/18—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/206—Organic displays, e.g. 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

Definitions

  • the embodiments of the present disclosure relate to, but are not limited to, the technical field of display product preparation, and in particular to a flexible display panel laminating device.
  • organic light-emitting diode Organic Light-Emitting Diode, OLED
  • OLED Organic Light-Emitting Diode
  • a bonding device for bonding a glass cover plate to an OLED flexible display panel for bonding a glass cover plate to an OLED flexible display panel.
  • the bending area of the flexible display panel is likely to be insufficiently stressed and generate bubbles, or it is likely to cause a flat area of the flexible display panel
  • the transition position between the bending area and the bending area is not uniformly stressed and causes cracks.
  • the group display is invalid.
  • Some cracks caused by bonding have a risk of hysteresis, which will only be triggered after tens of days of standing, which has seriously affected the consumer experience.
  • the bubbles and cracks generated during the bonding process will seriously affect the bonding yield.
  • the embodiment of the present disclosure provides a flexible display panel bonding device for bonding a flexible display panel to be bonded to a cover plate, including a base and an elastic bonding member provided on the base.
  • the joining member is provided with a first surface for carrying the flexible display panel to be bonded and a second surface disposed opposite to the first surface, and two supporting ribs are symmetrically provided on the second surface, and two supporting ribs are provided on the second surface.
  • the protruding ribs are respectively fixed in the two fixing grooves provided on the base, and there is a gap between the portion of the second surface of the elastic fitting member between the two supporting protruding ribs and the base, so The portion of the second surface of the elastic bonding member close to the edge is supported on the base.
  • FIG. 1 is a schematic diagram of a structure of a flexible display panel bent on four sides;
  • Fig. 2 is a schematic structural diagram of a laminating device according to an embodiment of the present disclosure
  • Figure 3 is a cross-sectional view of the laminating device of Figure 2;
  • FIG. 4 is a schematic diagram of the structure of the base of the laminating device of FIG. 2;
  • Figure 5 is an exploded view of the base of Figure 4.
  • FIG. 6 is a schematic diagram of the structure of the elastic bonding member of the bonding device of FIG. 2;
  • FIG. 7 is a schematic top view of the structure of the elastic bonding member of FIG. 6;
  • FIG. 8 is a schematic front view of the structure of the elastic bonding member of FIG. 6;
  • FIG. 9 is a schematic side view of the structure of the elastic bonding member of FIG. 6;
  • Fig. 10 is a schematic diagram of lamination using the lamination device of an embodiment of the present disclosure shown in Fig. 2.
  • the flexible display panel 7 includes a flat area 702 and a bending area 701 at the edge. Taking the flexible display panel 7 with a rectangular edge contour as an example, the flexible display panel 7 is bent The sides can be two sides, three sides, or four sides. The flexible display panel 7 shown in FIG. 1 is bent on four sides.
  • the pre-bent formed flexible display panel 7 can be attached to the inner surface of the cover plate by a laminating device.
  • the pre-bent formed flexible display panel 7 has a shape similar to that of The inner surface of the cover has the same shape.
  • the four corners of the flexible display panel 7 are prone to generate bubbles, and the transition position between the bending area 701 and the flat area 702 of the flexible display panel 7 (fourth in Figure 1 A crack-prone area 703) in a dashed frame is prone to cracks.
  • embodiments of the present disclosure provide a flexible display panel bonding device for bonding a flexible display panel 6 to be bonded to a cover 3, including a base 1 and a device
  • the elastic bonding member 2 on the base 1, the elastic bonding member 2 is provided with a first surface 201 for carrying the flexible display panel 6 to be bonded and a second surface disposed opposite to the first surface 201 202.
  • Two supporting ribs 204 are symmetrically provided on the second surface 202, and the two supporting ribs 204 are respectively fixed in the two fixing grooves 1012 provided on the base 1, and the elastic fitting There is a gap between the portion of the second surface 202 of the second surface 202 between the two supporting ribs 204 and the base 1, and the portion near the edge of the second surface 202 of the elastic fitting member 2 is supported on the base 1. Mentioned on the base 1.
  • the elastic laminating member 2 can be fixed on the base 1 by two supporting ribs 204 provided on the second surface 202 of the elastic laminating member 2.
  • the second surface 202 of the elastic laminating member 2 There is a gap between the part between the two supporting ribs 204 (that is, the middle area of the second surface 202 of the elastic bonding member 2) and the base 1, and the part of the second surface 202 near the edge (the second surface 202 The peripheral area of the) is supported on the base 1, so that the base 1 drives the elastic bonding member 2 to move for the bonding process (the elastic bonding member 2 is elastically deformed during the bonding process, and bears on the first surface 201 The flexible display panel 6 to be bonded is pressed against the cover 3).
  • the pressure applied to the edge portion of the flexible display panel 6 to be bonded by the base 1 through the elastic bonding member 2 is greater than the pressure applied to the flexible display panel to be bonded 6
  • the pressure of the middle part of the display panel 6 can avoid the generation of air bubbles at the four corners due to insufficient pressure at the four corners of the flexible display panel 6 to be bonded; on the other hand, due to the part of the second surface 202 of the elastic bonding member 2 close to the edge Supported on the base 1, so that during the lamination process, the transition position between the bending area near the edge and the flat area in the middle of the flexible display panel 6 to be attached can be more uniformly stressed.
  • the flexible display panel bonding device of the embodiment of the present disclosure has strong applicability, can be applied to the bonding of a large-curved cover plate and a flexible display panel, and can be applied to one-sided bending, two-sided bending, three-sided bending, four-sided bending, etc.
  • the form of flexible display panel and cover plate bonding is a large-curved cover plate and a flexible display panel, and can be applied to one-sided bending, two-sided bending, three-sided bending, four-sided bending, etc. The form of flexible display panel and cover plate bonding.
  • the first surface 201 of the elastic bonding member 2 may include a first arc surface 2011 close to the edge and a second arc surface 2012 located in the middle. 2011 is used to correspond to the bending area of the edge of the flexible display panel 6 to be bonded, and the second curved surface 2012 is used to correspond to the flat area in the middle of the flexible display panel 6 to be bonded.
  • the radius of the second arc surface 2012 may be 1000 mm to 12000 mm.
  • the number of first arcs 2011 can be set according to whether the corresponding side of the flexible display panel 6 to be bonded is bent. For example, the flexible display panel to be bonded 6 with a rectangular edge contour may be bent on two sides, three sides or four sides.
  • each of the corresponding two, three, or four edges of the first surface 201 of the elastic bonding member 2 is provided with one first curved surface 2011, that is, the number of the first curved surfaces 2011 is corresponding to the number of the first curved surfaces 2011 to be bonded.
  • the number of bending sides of the flexible display panel 6 is the same.
  • the elastic bonding member 2 may be provided with four sides surrounded by a rectangle, which are a first side 205 and a second side 206 opposite to each other, and a third opposite side.
  • the first surface 201 of the elastic bonding member 2 may be provided with four first curved surfaces 2011, and each of the first curved surfaces 2011 is attached to the elastic The corresponding side of piece 2 corresponds.
  • the material of the elastic bonding member 2 can be silica gel, rubber, etc., and the hardness can be 30A-40A.
  • the elastic bonding member 2 may further include a transition surface 203 connected between the first curved surface 2011 and the second surface 202, and the elastic bonding The edge of the second surface 202 of the piece 2 protrudes from the edge of the first surface 201 of the elastic bonding piece 2.
  • the transition surface 203 may be an inclined surface or a curved surface.
  • the two supporting ribs 204 can be arranged in parallel, and the distance between each supporting rib 204 and the corresponding side of the elastic fitting member 2 close to the supporting rib 204 is b, the value of b can range from 8 to 15 mm.
  • the extending directions of the two supporting ribs 204 may be parallel to the long sides of the elastic bonding member 2.
  • the first side 205 and the second side 206 Is the long side, and the third side 207 and the fourth side 208 are short sides.
  • the distance between one of the supporting ribs 204 and the first side 205 may be equal to the other supporting rib 204 and the second side
  • the distance of 206 can be b.
  • the cross-sectional shape of the two supporting ribs 204 can be rectangular or L-shaped, and can be fixed in the two fixing grooves 1012 of the base 1 by using adhesive glue.
  • the first surface 201 of the elastic bonding member 2 may be provided with four first curved surfaces 2011, and one end of each of the supporting ribs 204 is connected to the first surface 201.
  • the distance between the three sides 207 is m
  • the parts of the second surface 202 of the elastic bonding member 2 close to the four sides can all be supported on the base 1.
  • the first surface 201 of the elastic bonding member 2 may be provided with one, two or three first curved surfaces 2011. Accordingly, the bending edges of the flexible display panel 6 to be bonded may be one or two. One or three.
  • the distance between the center position of the first surface 201 of the elastic bonding member 2 and the second surface 202 is H1, and the value range of H1 may be 3 to 8mm.
  • the distance between the first arc surface 2011 and the second arc surface 2012 of the first surface 201 of the elastic bonding member 2 and the second surface 202 is H2, H2 value range can be 4 to 15mm.
  • the second surface 202 may include a first part (a middle area of the second surface 202) with a gap with the base 1 and a second part (a peripheral area of the second surface 202) supported on the base 1.
  • the first part and the second part may be coplanar, and the second surface 202 may be flat; or, the first part and the second part may not be coplanar, and the second surface 202 may be an uneven surface.
  • the elastic bonding member is fixed on the base by two supporting ribs provided on the second surface of the elastic bonding member. There is a gap between the part of the second surface of the elastic bonding member and the base between the two supporting ribs. The part of the surface close to the edge is supported on the base.
  • the base drives the elastic lamination member to move for the lamination process (the elastic lamination member undergoes elastic deformation during the lamination process, and the load to be attached on the first surface is The flexible display panel is pressed against the cover).
  • the pressure applied to the edge part of the flexible display panel to be bonded by the base through the elastic bonding member is greater than the pressure applied to the middle part of the flexible display panel to be bonded.
  • three numerical ranges of b, H1, and H2 are determined according to the simulation results with the aid of finite element analysis software.
  • the simulation results show that the use of the above three numerical ranges of b, H1 and H2 can make the laminating device in the laminating process make the transition position between the bending area and the flat area of the flexible display panel more uniform.
  • the stress at the transition position is reduced, the generation of cracks is reduced, and the bonding yield is improved.
  • the base 1 may be provided with a third surface facing the second surface 202 of the elastic bonding member 2, and a supporting edge 103 is provided on the third surface of the base 1, so The portion close to the edge of the second surface 202 of the elastic bonding member 2 is supported on the supporting edge 103, and the third surface of the base 1 is provided with two fixing grooves 1012.
  • the supporting edge 103 may be rectangular, and the parts of the second surface 202 close to the four sides of the elastic bonding member 2 may be supported on the supporting edge 103.
  • the width of the supporting edge 103 may be 8 to 15 mm.
  • the material of the base 1 can be a hard material, such as metal or high-strength plastic.
  • the supporting edge 103 may be rectangular, and the base 1 may include a base body 101 and two stoppers 102 respectively detachably fixed at both ends of the base body 101.
  • the base 1 The third surface of the base body 101 may include a fourth surface 1011 of the base body 101.
  • the fourth surface 1011 of the base body 101 is provided with two protruding edges 1013 opposite to each other, and the two stoppers 102 protrude from the base.
  • the part of the fourth surface 1011 of the main body 101 and the two protruding edges 1013 enclose the supporting edge 103.
  • the two fixing grooves 1012 are arranged on the fourth surface 1011 of the base body 101 and are arranged in parallel with the two protruding edges 1013.
  • the side surface of one convex edge 1013 opposite to the other convex edge 1013 forms a groove wall close to the length of the fixing groove 1012 of the convex edge 1013, and the supporting rib 204 of the elastic fitting member 2 located in the fixing groove 1012 can resist Connected to the side of the corresponding convex edge 1013.
  • the ends of the two supporting ribs 204 may abut on opposite sides of the two stoppers 102.
  • the two stoppers 102 can both be fixed on the two end surfaces of the base body 101 by screws or other fasteners.
  • the end surface of the base body 101 can be provided with a notch groove 1014.
  • the lower part of the stopper 102 is located in the notch groove 1014.
  • the bottom of the groove 1014 is provided with a first fixing hole 1015 through which a fastener such as a screw is inserted, and a second fixing hole 1021 may be provided at a position of the stop 102 corresponding to the first fixing hole 1015.
  • Both sides of the upper part of the stopper 102 may be provided with bosses 1022, and the two bosses 1022 are supported on the fourth surface 1011 of the base body 101 and respectively abut against the opposite sides of the two bosses 1013.
  • the flexible display panel laminating device may further include a driving device (not shown) connected to the base 1, and the driving device may be configured to drive the base 1 to move back and forth to drive
  • the elastic bonding member 2 moves to perform bonding.
  • the driving device may be a hydraulic cylinder driving mechanism, a device that cooperates with a motor and a screw nut transmission mechanism, or a device that cooperates with a motor and a gear transmission mechanism, or the like.
  • the two-way arrow in FIG. 10 represents the direction in which the driving device drives the base 1 to move back and forth.
  • the process of bonding the flexible display panel 6 to be bonded to the cover 3 by using the flexible display panel bonding device of the embodiment of the present disclosure may include: using a cover fixing jig 4 to keep the cover 3 fixed. Do not move, make the inner side of the cover 3 (the flexible display panel to be bonded 6 is finally bonded to the inner side of the cover 3) facing down, and the bonding device of the embodiment of the present disclosure is arranged under the cover 3.
  • the auxiliary flexible carrier film (CF) 5 can be used to pre-bend the flexible display panel 6 to be bonded (the flexible display panel 6 to be bonded is attached to the flexible carrier film 5 during the pre-bending molding process) , And the pre-bended flexible display panel 6 can be fixed on the first surface 201 of the elastic bonding member 2 of the laminating device of the embodiment of the present disclosure through the flexible supporting film 5 (the flexible supporting film 5 is placed on the elastic bonding On the first surface 201 of the piece 2, the sides of the flexible supporting film 5 can be tightened by a pulling mechanism provided on the base 1 so that the flexible supporting film 5 is fixed on the first surface 201 of the elastic bonding piece 2).
  • the driving device drives the base 1 and drives the elastic bonding member 2 to move upward toward the cover plate 3 (the cover plate 3 remains fixed), and the pre-bent formed flexible display panel 6 and the cover plate carried on the elastic bonding member 2 3 After the contact, the pressure can be maintained for 5 to 10 seconds, so that the pre-bended flexible display panel 6 is attached to the cover 3.
  • the driving device drives the base 1 and drives the elastic bonding member 2 to move down, removes the external force of the holding mechanism on the flexible carrier film 5, removes the flexible carrier film 5, and completes the bonding process.
  • connection means a fixed connection, or may be Removable connection, or can be integrally connected;
  • installation means a connection through an intermediate medium, or internal communication between two components.

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Abstract

一种柔性显示面板贴合装置，涉及显示产品制备技术领域，用于将待贴合的柔性显示面板（6）贴合在盖板（3）上，包括底座（1）和设置在底座（1）上的弹性贴合件（2），弹性贴合件（2）设有用于承载待贴合柔性显示面板（6）的第一表面（201）和与第一表面（201）相对设置的第二表面（202），第二表面（202）上对称设有两个支撑凸棱（204），两个支撑凸棱（204）分别固定在底座（1）上设置的两个固定槽（1012）内，弹性贴合件（2）的第二表面（202）的位于两个支撑凸棱（204）之间的部分与底座（1）之间具有间隙，弹性贴合件（2）的第二表面（202）的靠近边缘的部分支撑在底座（1）上。

Description

柔性显示面板贴合装置
本申请要求于2020年01月20日提交中国专利局、申请号为202020133610.X、发明名称为“一种柔性显示面板贴合装置”的中国专利申请的优先权，其内容应理解为通过引用的方式并入本申请中。
技术领域
本公开实施例涉及但不限于显示产品制备技术领域，具体涉及一种柔性显示面板贴合装置。
背景技术
目前，有机发光二极管(Organic Light-Emitting Diode，OLED)柔性显示面板作为电子设备的显示部件已经广泛地应用于各种电子产品中，且随着曲面屏的开发，OLED模组外的玻璃盖板形态多样化，多边曲的玻璃盖板成为一种新趋势，这就对玻璃盖板与OLED柔性显示面板的全贴合技术提出了更高的要求。
一种用于玻璃盖板与OLED柔性显示面板贴合的贴合装置，在贴合过程中容易造成柔性显示面板的折弯区受力不足而产生气泡，或者，容易造成柔性显示面板的平坦区和折弯区之间的过渡位置受力不均匀而导致产生裂纹，比如易引发柔性显示面板的薄膜封装层产生裂纹，导致薄膜封装层失效，水氧由此进入腐蚀发光层材料，引起OLED模组显示失效。贴合产生的裂纹有的具备滞后性风险，在静置数十天才会被激发，已严重影响消费者体验。贴合过程中产生的气泡、裂纹问题会严重影响贴合良率。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本公开实施例提供一种柔性显示面板贴合装置，用于将待贴合的柔性显示面板贴合在盖板上，包括底座和设置在所述底座上的弹性贴合件，所述弹 性贴合件设有用于承载待贴合柔性显示面板的第一表面和与所述第一表面相对设置的第二表面，所述第二表面上对称设有两个支撑凸棱，两个所述支撑凸棱分别固定在所述底座上设置的两个固定槽内，所述弹性贴合件的第二表面的位于两个所述支撑凸棱之间的部分与所述底座之间具有间隙，所述弹性贴合件的第二表面的靠近边缘的部分支撑在所述底座上。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图说明
附图用来提供对本公开技术方案的理解，并且构成说明书的一部分，与本公开型的实施例一起用于解释本公开的技术方案，并不构成对本公开技术方案的限制。
图1为一种四边折弯的柔性显示面板的结构示意图；
图2为本公开一实施例的贴合装置的结构示意图；
图3为图2的贴合装置的剖视图；
图4为图2的贴合装置的底座的结构示意图；
图5为图4的底座的***图；
图6为图2的贴合装置的弹性贴合件的结构示意图；
图7为图6的弹性贴合件的俯视结构示意图；
图8为图6的弹性贴合件的主视结构示意图；
图9为图6的弹性贴合件的侧视结构示意图；
图10为采用图2所示的本公开一实施例的贴合装置进行贴合的示意图。
具体实施方式
下面结合附图并通过实施例来说明本公开的技术方案。可以理解的是，此处所描述的实施例仅仅用于解释本公开，而非对本公开的限定。
如图1所示，一些曲面屏电子产品的OLED模组中，柔性显示面板7包括平坦区域702和位于边缘的折弯区域701，以边缘轮廓为矩形的柔性显示面板7为例，其折弯的边可以是两边、三边或四边。图1所示的柔性显示面 板7为四边折弯，预折弯成型的柔性显示面板7可以通过贴合装置贴合在盖板的内侧面上，预折弯成型的柔性显示面板7的形状与盖板的内侧面的形状一致。贴合装置在完成柔性显示面板7与盖板贴合后，柔性显示面板7的四角位置易产生气泡，柔性显示面板7的折弯区域701与平坦区域702之间的过渡位置(图1中四个虚线框的易产生裂纹区域703)易产生裂纹。
如图2、图3、图10所示，本公开实施例提供一种柔性显示面板贴合装置，用于将待贴合的柔性显示面板6贴合在盖板3上，包括底座1和设置在所述底座1上的弹性贴合件2，所述弹性贴合件2设有用于承载待贴合柔性显示面板6的第一表面201和与所述第一表面201相对设置的第二表面202，所述第二表面202上对称设有两个支撑凸棱204，两个所述支撑凸棱204分别固定在所述底座1上设置的两个固定槽1012内，所述弹性贴合件2的第二表面202的位于两个所述支撑凸棱204之间的部分与所述底座1之间具有间隙，所述弹性贴合件2的第二表面202的靠近边缘的部分支撑在所述底座1上。
本公开实施例的柔性显示面板贴合装置，弹性贴合件2可以通过其第二表面202上设置的两个支撑凸棱204固定在底座1上，弹性贴合件2的第二表面202的位于两个支撑凸棱204之间的部分(也即弹性贴合件2的第二表面202的中间区域)与底座1之间具有间隙，第二表面202的靠近边缘的部分(第二表面202的周边区域)支撑在底座1上，这样，在底座1带动弹性贴合件2移动进行贴合过程中(贴合过程中弹性贴合件2发生弹性形变，并将其第一表面201上承载的待贴合柔性显示面板6压贴在盖板3上)，一方面，底座1通过弹性贴合件2施加到待贴合柔性显示面板6的靠近边缘部分的压力大于施加到待贴合柔性显示面板6的中间部分的压力，可以避免由于待贴合柔性显示面板6的四角位置压力不足而在四角产生气泡；另一方面，由于弹性贴合件2的第二表面202的靠近边缘的部分支撑在底座1上，这样在贴合过程中，可以使待贴合柔性显示面板6的靠近边缘的折弯区与位于中间的平坦区之间的过渡位置受力更为均匀，因此，可以减少柔性显示面板的折弯区与平坦区之间的过渡位置的裂纹的产生，最终提高贴合良率。实际应用中，在保证无气泡基础上，可使产线的裂纹不良率从2.4％降低至0.3％。 并且，本公开实施例的柔性显示面板贴合装置，适用性强，可适用于大弧度盖板与柔性显示面板的贴合，且可适用于一边弯曲、两边弯曲、三边弯曲或四边弯曲等形态的柔性显示面板和盖板的贴合。
如图3、图6至图10所示，所述弹性贴合件2的第一表面201可以包括靠近边缘的第一弧面2011和位于中间的第二弧面2012，所述第一弧面2011用于与待贴合柔性显示面板6的边缘的折弯区域对应，所述第二弧面2012用于与待贴合柔性显示面板6的中间的平坦区域对应。其中，第二弧面2012的半径可以为1000mm至12000mm。可根据待贴合柔性显示面板6的相应边是否折弯来设置第一弧面2011的数目，比如，边缘轮廓为矩形的待贴合柔性显示面板6可以为两边、三边或四边折弯，则弹性贴合件2的第一表面201的对应的两个、三个或四个边缘中每个边缘设有一个所述第一弧面2011，即第一弧面2011的数目与待贴合柔性显示面板6的折弯边的数目相同。如图7所示，示例性地，所述弹性贴合件2可以设有围成矩形的四个侧边，分别为相对的第一侧边205和第二侧边206，以及相对的第三侧边207和第四侧边208，所述弹性贴合件2的第一表面201可以设有四个所述第一弧面2011，每个所述第一弧面2011与所述弹性贴合件2的相应侧边对应。弹性贴合件2的材料可以为硅胶、橡胶等，硬度可以为30A-40A。
如图3、图6至图9所示，所述弹性贴合件2还可以包括连接在所述第一弧面2011与所述第二表面202之间的过渡面203，所述弹性贴合件2的第二表面202的边缘凸出于所述弹性贴合件2的第一表面201的边缘。其中，过渡面203可以为斜面或者弧面。
如图8所示，两个所述支撑凸棱204可以平行设置，每个所述支撑凸棱204与靠近该支撑凸棱204的所述弹性贴合件2的相应侧边之间的距离为b，b值范围可以为8至15mm。其中，两个所述支撑凸棱204的延伸方向可以与所述弹性贴合件2的长侧边平行，本实施例中，如图7所示，第一侧边205和第二侧边206为长侧边，第三侧边207和第四侧边208为短侧边，则，其中一个支撑凸棱204与第一侧边205的距离可以等于另一个支撑凸棱204与第二侧边206的距离，均可以为b。两个支撑凸棱204的截面形状可以为矩形或者L形等，可以采用粘结胶固定在底座1的两个固定槽1012内。
如图6至图9所示，本公开实施例中，弹性贴合件2的第一表面201可以设置有四个第一弧面2011，每个所述支撑凸棱204的一端与所述第三侧边207的距离为m，每个所述支撑凸棱204的另一端与所述第四侧边208的距离为n，可以设置为m＝n＝b＝8至15mm。这样，弹性贴合件2的第二表面202的靠近四个侧边的部分均可以支撑在底座1上。在其他实施例中，弹性贴合件2的第一表面201可以设置一个、两个或三个第一弧面2011，相应地，待贴合柔性显示面板6的折弯边可以为一个、两个或三个。
如图8所示，所述弹性贴合件2的第一表面201的中心位置与所述第二表面202之间的距离(例如可以是最短距离或垂直距离)为H1，H1值范围可以为3至8mm。所述弹性贴合件2的第一表面201的第一弧面2011与第二弧面2012的相接位置与所述第二表面202之间的距离(例如可以是最短距离或垂直距离)为H2，H2值范围可以为4至15mm。其中，第二表面202可以包括与底座1之间具有间隙的第一部分(第二表面202的中间区域)和支撑在底座1上的第二部分(第二表面202的周边区域)。第一部分与第二部分可以共面，则第二表面202可以为平面；或者，第一部分与第二部分可以不共面，则第二表面202可以为不平整表面。
弹性贴合件通过其第二表面上设置的两个支撑凸棱固定在底座上，弹性贴合件的第二表面的位于两个支撑凸棱之间的部分与底座之间具有间隙，第二表面的靠近边缘的部分支撑在底座上，这样，在底座带动弹性贴合件移动进行贴合过程中(贴合过程中弹性贴合件发生弹性形变，并将其第一表面上承载的待贴合柔性显示面板压贴在盖板上)，一方面，底座通过弹性贴合件施加到待贴合柔性显示面板的靠近边缘部分的压力大于施加到待贴合柔性显示面板的中间部分的压力，可以避免由于柔性显示面板的四角位置压力不足而在四角产生气泡；另一方面，由于弹性贴合件的第二表面的靠近边缘的部分支撑在底座上，这样在贴合过程中，可以使柔性显示面板的靠近边缘的折弯区与位于中间的平坦区之间的过渡位置受力更为均匀，因此，可以减少柔性显示面板的折弯区与平坦区之间的过渡位置的裂纹的产生，最终提高贴合良率。
本公开实施例借助有限元分析软件，根据仿真结果确定了b、H1和H2 三个数值范围。仿真结果表明，采用上述b、H1和H2三个数值范围，可以使本贴合装置在贴合过程中，使柔性显示面板的折弯区与平坦区之间的过渡位置受力更为均匀，在保证柔性显示面板的折弯区有足够压力的基础上，降低了过渡位置的应力，减少了裂纹的产生，提高了贴合良率。
如图3至图5所示，所述底座1可以设有朝向所述弹性贴合件2的第二表面202的第三表面，所述底座1的第三表面上设有支撑沿103，所述弹性贴合件2的第二表面202的靠近边缘的部分支撑在所述支撑沿103上，所述底座1的第三表面上设有两个所述固定槽1012。其中，所述支撑沿103可以为矩形，第二表面202的靠近弹性贴合件2的四个侧边的部分可以支撑在支撑沿103上。支撑沿103的宽度可以为8至15mm。底座1的材料可以为硬质材料，比如为金属或高强塑料。
如图4至图5所示，所述支撑沿103可以为矩形，所述底座1可以包括底座主体101和分别可拆固定在所述底座主体101两端的两个挡块102，所述底座1的第三表面可以包括所述底座主体101的第四表面1011，所述底座主体101的第四表面1011上相对设置有两个凸沿1013，两个所述挡块102凸出于所述底座主体101的第四表面1011的部分与两个所述凸沿1013围成所述支撑沿103。其中，两个所述固定槽1012设置在底座主体101的第四表面1011上，并与两个凸沿1013平行设置。一个凸沿1013的与另一个凸沿1013相对的侧面形成靠近该凸沿1013的固定槽1012的长度方向上的槽壁，位于固定槽1012内的弹性贴合件2的支撑凸棱204可以抵接在相应凸沿1013的侧面上。两个支撑凸棱204的端部可以抵接在两个挡块102相对的侧面上。两个挡块102可以均通过螺钉等紧固件分别固定在底座主体101的两个端面上，底座主体101的端面上可以设置有缺口槽1014，挡块102的下部位于缺口槽1014内，缺口槽1014的槽底设有穿设螺钉等紧固件的第一固定孔1015，挡块102的与第一固定孔1015对应的位置可以设有第二固定孔1021。挡块102上部的两侧均可以设有凸台1022，两个凸台1022支撑在底座主体101的第四表面1011上并分别与两个凸沿1013相对的侧面抵接。
如图10所示，所述柔性显示面板贴合装置还可以包括与所述底座1连接的驱动装置(未示出)，所述驱动装置可以设置为能够驱动所述底座1往复 移动，以带动所述弹性贴合件2运动从而进行贴合。其中，驱动装置可以采用液压缸驱动机构、电机与丝杠螺母传动机构配合的装置，或者电机与齿轮传动机构配合的装置等。图10中双向箭头代表驱动装置驱动底座1往复移动的方向。
如图10所示，采用本公开实施例的柔性显示面板贴合装置将待贴合柔性显示面板6与盖板3贴合的过程可以包括：采用盖板固定治具4将盖板3保持固定不动，使盖板3的内侧面(待贴合柔性显示面板6最终贴合在盖板3的内侧面上)朝下，本公开实施例的贴合装置设置在盖板3下方。可以采用辅助的柔性承载膜(Carrier Film，CF)5将待贴合柔性显示面板6预折弯成型(待贴合柔性显示面板6在预折弯成型过程中贴附在柔性承载膜5上)，并且完成预折弯成型的柔性显示面板6可以通过柔性承载膜5固定在本公开实施例的贴合装置的弹性贴合件2的第一表面201上(柔性承载膜5放置在弹性贴合件2的第一表面201上，柔性承载膜5的侧边可以通过设置在底座1上的拉持机构拉紧从而使柔性承载膜5固定在弹性贴合件2的第一表面201上)。贴合前，可以保证弹性贴合件2的第一表面201的第一弧面2011与盖板3的内侧面之间的间隙自第一表面201内部向边缘位置逐渐增大，这样可以减少贴合过程中产生气泡。之后，驱动装置驱动底座1并带动弹性贴合件2向上朝向盖板3(盖板3保持固定不动)移动，弹性贴合件2上承载的预折弯成型的柔性显示面板6与盖板3接触后可以保压5至10s，从而将预折弯成型的柔性显示面板6贴合在盖板3上。然后，驱动装置驱动底座1并带动弹性贴合件2下移，撤去拉持机构对柔性承载膜5的外力，撤下柔性承载膜5，完成贴合过程。
在本公开实施例的描述中，除非另有明确的规定和限定，术语“连接”、“固定连接”、“安装”、“装配”应做广义理解，例如，可以是固定连接，或者可以是可拆卸连接，或者可以是一体地连接；术语“安装”、“连接”、“固定连接”可以是直接相连，或者可以通过中间媒介间接相连，或是两个元件内部的连通。对于本领域的普通技术人员而言，可以视情况理解上述术语在本公开实施例中的含义。

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  1. 一种柔性显示面板贴合装置，用于将待贴合的柔性显示面板贴合在盖板上，包括底座和设置在所述底座上的弹性贴合件，所述弹性贴合件设有用于承载待贴合柔性显示面板的第一表面和与所述第一表面相对设置的第二表面，所述第二表面上对称设有两个支撑凸棱，两个所述支撑凸棱分别固定在所述底座上设置的两个固定槽内，所述弹性贴合件的第二表面的位于两个所述支撑凸棱之间的部分与所述底座之间具有间隙，所述弹性贴合件的第二表面的靠近边缘的部分支撑在所述底座上。
  2. 如权利要求1所述的柔性显示面板贴合装置，其中，所述弹性贴合件的第一表面包括靠近边缘的第一弧面和位于中间的第二弧面，所述第一弧面用于与待贴合柔性显示面板的边缘的折弯区域对应，所述第二弧面用于与待贴合柔性显示面板的中间的平坦区域对应。
  3. 如权利要求2所述的柔性显示面板贴合装置，其中，所述弹性贴合件还包括连接在所述第一弧面与所述第二表面之间的过渡面，所述弹性贴合件的第二表面的边缘凸出于所述弹性贴合件的第一表面的边缘。
  4. 如权利要求3所述的柔性显示面板贴合装置，其中，两个所述支撑凸棱平行设置，每个所述支撑凸棱与靠近该支撑凸棱的所述弹性贴合件的相应侧边之间的距离为8至15mm。
  5. 如权利要求3所述的柔性显示面板贴合装置，其中，所述弹性贴合件的第一表面的中心位置与所述第二表面之间的距离为3至8mm。
  6. 如权利要求3所述的柔性显示面板贴合装置，其中，所述弹性贴合件的第一表面的第一弧面与第二弧面的相接位置与所述第二表面之间的距离为4至15mm。
  7. 如权利要求2所述的柔性显示面板贴合装置，其中，所述底座设有朝向所述弹性贴合件的第二表面的第三表面，所述底座的第三表面上设有支撑沿，所述弹性贴合件的第二表面的靠近边缘的部分支撑在所述支撑沿上，所述底座的第三表面上设有两个所述固定槽。
  8. 如权利要求7所述的柔性显示面板贴合装置，其中，所述弹性贴合件 设有相对的第一侧边和第二侧边，以及相对的第三侧边和第四侧边，所述支撑沿为矩形。
  9. 如权利要求7或8所述的柔性显示面板贴合装置，其中，所述底座包括底座主体和分别可拆固定在所述底座主体两端的两个挡块，所述底座的第三表面包括所述底座主体的第四表面，所述底座主体的第四表面上相对设置有两个凸沿，两个所述挡块凸出于所述底座主体的第四表面的部分与两个所述凸沿围成所述支撑沿。
  10. 如权利要求1-9任一项所述的柔性显示面板贴合装置，还包括与所述底座连接的驱动装置，所述驱动装置设置为能够驱动所述底座往复移动，以带动所述弹性贴合件运动从而进行贴合。
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