Separation apparatus and separation method for flexible display panel

Patent metadata

Field	Value
Publication number	US-2019232634-A1
Application number	US-201715579352-A
Country	US
Kind code	A1
Filing date	Nov 22, 2017
Priority date	Oct 23, 2017
Publication date	Aug 1, 2019
Grant date	—

Abstract

The present application provides a separation apparatus for a flexible display panel, includes a support post, a power unit and a vacuum suction block; wherein the supporting post is used to support the separation apparatus on the relatively upper side of the rigid substrate to be separated; the vacuum suction block is in communication with the support post, and is used to suck and connect the rigid substrate to be separated; and one end of the power unit is connected to the support post, the other end is rotatably connected with the vacuum suction block, and is used for controlling the vacuum suction block and the rigid substrate to be separated together to be separated from the flexible display panel. The present application also provides a method for separating a flexible display panel.

First claim

What is claimed is:

1 . A separation apparatus for a flexible display panel, for lifting-off a rigid substrate and a flexible display panel bonded to each other, wherein the separation apparatus comprises a support post, a power unit and a vacuum suction block;
wherein the supporting post is used to support the separation apparatus on the relatively upper side of the rigid substrate to be separated; the vacuum suction block is in communication with the support post, and is used to suck and connect the rigid substrate to be separated; and one end of the power unit is connected to the support post, the other end is rotatably connected with the vacuum suction block, and is used for controlling the vacuum suction block and the rigid substrate to be separated together to be separated from the flexible display panel.

2 . The separation apparatus for the flexible display panel according to claim 1 , wherein the power unit comprises a power output device and a drive shaft, the drive shaft is extending along a first direction, the power output device is drivably connected to the drive shaft to drive the drive shaft to reciprocate motion in the first direction, the vacuum suction block is rotatably connected to the drive shaft;
wherein the first direction forms an included angle between a normal direction of the rigid substrate to be separated.

3 . The separation apparatus for the flexible display panel according to claim wherein the angle of the included angle is 5° to 30°.

4 . The separation apparatus for the flexible display panel according to claim 2 , wherein the power output device is a cylinder, the power output device is connected to a first end of the drive shaft, the vacuum suction block is connected to a second end of the drive shaft.

5 . The separation apparatus for the flexible display panel according to claim 4 , wherein the vacuum suction block is connected to the second end of the drive shaft by an universal joint.

6 . The separation apparatus for the flexible display panel according to claim 1 , wherein the separation apparatus further comprises:
an air blowing unit, the air blowing unit is for blowing gas into a bonding interface between the flexible display panel and the rigid substrate.

7 . The separation apparatus for the flexible display panel according to claim 1 , wherein the vacuum suction block is connected to a heating unit, the heating unit is for heating the rigid substrate through the vacuum suction block.

8 . The separation apparatus for the flexible display panel according to claim 1 , wherein the vacuum suction block comprises a suction nozzle, the suction nozzle is connected to an external vacuum suction apparatus through an air pipe, the air pipe is extended in the support post.

9 . A method for separating a flexible display panel, for separating a rigid substrate and a flexible display panel bonded to each other, wherein the separation method comprises:
providing a vacuum suction platform, sucking and fixing the flexible display panel to the vacuum suction platform by placing the flexible display panel toward the vacuum suction platform; ablating an adhesive layer between the flexible display panel and the rigid substrate by using a laser lifting-off process; providing a separation apparatus for the flexible display panel, fixing the separation apparatus above the rigid substrate, wherein the separation apparatus comprises a support post, a power unit and a vacuum suction block, the supporting post is used to support the separation apparatus on the relatively upper side of the rigid substrate to be separated, the vacuum suction block is in communication with the support post, and is used to suck and connect the rigid substrate to be separated, and one end of the power unit is connected to the support post, the other end is rotatably connected with the vacuum suction block; controlling the vacuum suction block of the separation apparatus to suck and connect to the rigid substrate, wherein a position of the vacuum suction block sucked and connected is adjacent to an edge of the rigid substrate; controlling the power unit of the separation apparatus to pull the vacuum suction block, to make a bonding interface of the flexible display panel and the rigid substrate separated and forming an opening portion; and controlling the power unit continually to pull the vacuum suction block, to make the opening portion extended until the rigid substrate completely lifted-off from the flexible display panel.

10 . The method for separating the flexible display panel according to claim 9 , wherein the speed of the power unit to pull the vacuum suction block is 0.1˜0.3 mm/s.

11 . The method for separating the flexible display panel according to claim 9 , wherein the power unit comprises a power output device and a drive shaft, the drive shaft is extending along a first direction, the power output device is drivably connected to the drive shaft to drive the drive shaft to reciprocate motion in the first direction, the vacuum suction block is rotatably connected to the drive shaft; wherein the first direction forms an included angle between a normal direction of the rigid substrate to be separated.

12 . The method for separating the flexible display panel according to claim 11 , wherein the angle of the included angle is 5° to 30°.

13 . The method for separating the flexible display panel according to claim 11 , wherein the power output device is a cylinder, the power output device is connected to a first end of the drive shaft, the vacuum suction block is connected to a second end of the drive shaft.

14 . The method for separating the flexible display panel according to claim 13 , wherein the vacuum suction block is connected to the second end of the drive shaft by an universal joint.

15 . The method for separating the flexible display panel according to claim 9 , wherein the separation apparatus further comprises:
an air blowing unit, the air blowing unit is for blowing gas into a bonding interface between the flexible display panel and the rigid substrate; and the separation method further comprising: when pulling the vacuum suction block, an air is blown into the bonding interface through the opening portion.

16 . The method for separating the flexible display panel according to claim 9 , wherein the vacuum suction block is connected to a heating unit, the heating unit is for heating the rigid substrate through the vacuum suction block; and
the separation method further comprising: the separation method further comprising: when pulling the vacuum suction block, heating the rigid substrate through the conduction of the vacuum suction block.

17 . The method for separating the flexible display panel according to claim 16 , wherein a heating temperature to the vacuum suction block is 50° C. to 80° C.

18 . The method for separating the flexible display panel according to claim 9 , wherein the vacuum suction block comprises a suction nozzle, the suction nozzle is connected to an external vacuum suction apparatus through an air pipe, the air pipe is extended in the support post.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Tao Qiang

Classifications

• Y10S156/941

  Means for delaminating semiconductive product · CPC title

• Y10T156/1168

  Gripping and pulling work apart during delaminating · CPC title

• Y10T156/1132

  Using vacuum directly against work during delaminating · CPC title

• B32B43/006 Primary

  Delaminating · CPC title

• Y10T156/1911

  Heating or cooling delaminating means [e.g., melting means, freezing means, etc.] · CPC title