Flexible display panel peeling apparatus and peeling method using the same

Patent metadata

Field	Value
Publication number	US-9393769-B2
Application number	US-201414316314-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Nov 1, 2013
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A flexible display panel peeling apparatus for peeling a flexible display panel attached to a top surface of a substrate includes a stage fixed to the substrate and a peeling plate comprising a bottom surface that is convex toward the flexible display panel and a plurality of adsorption units defined in the bottom surface to adsorb the flexible display panel to the bottom surface. Since the flexible display panel is successively peeled through the peeling plate, the flexible display panel may be peeled from the substrate without being damaged.

First claim

What is claimed is:

1. A flexible display panel peeling method, comprising:
fixing a substrate on which a flexible display panel is disposed to a stage;
disposing a peeling plate on the flexible display panel, the peeling plate comprising a convex bottom surface configured to contact the flexible display panel and adsorption units disposed at the convex bottom surface;
adsorbing, via the adsorption units, the flexible display panel; and
peeling the flexible display panel from the substrate by rocking the peeling plate on the flexible display panel,
wherein the peeling plate comprises a flat top surface, and
wherein the convex bottom surface comprises a curved surface having a curvature radius greater than a height of the peeling plate.

2. The flexible display panel peeling method of claim 1 , wherein:
the flexible display panel comprises a first panel end contacting a first end of the convex bottom surface; and
rolling the peeling plate on the flexible display panel comprises successively peeling the flexible display panel from the first panel end to a second panel end of the flexible display panel.

3. The flexible display panel peeling method of claim 2 , further comprising:
peeling the first panel end of the flexible display panel from the substrate in a second direction perpendicular to a first direction, the first direction being a direction of rolling the peeling plate.

4. The flexible display panel peeling method of claim 3 , wherein peeling the first panel end comprises:
inserting a peeling knife between the first panel end and the substrate in the first direction; and
moving the peeling knife in the second direction.

5. The flexible display panel peeling method of claim 3 , wherein:
the substrate comprises a first region adjacent to the first panel end and a second region; and
the peeling of the first panel end comprises:
scribing, along a boundary between the first region and the second region, a bottom surface of the substrate opposite to a top surface of the substrate contacting the flexible display panel; and
separating the first region from the second region.

6. The flexible display panel peeling method of claim 5 , wherein:
the peeling of the first panel end further comprises:
inverting the flexible display panel and the substrate, and
re-inverting the flexible display panel and the substrate; and

the scribing of the bottom surface of the substrate is performed between the inverting and the re-inverting of the flexible display panel and the substrate.

7. The flexible display panel peeling method of claim 1 , wherein adsorbing the flexible display panel comprises vacuum-adsorbing a top surface of the flexible display panel by the adsorption units.

8. The flexible display panel peeling method of claim 1 , further comprising:
disposing the substrate on a stage, the stage comprising an adsorption pad disposed to face the substrate to adsorb the substrate to the stage.

9. A flexible display panel peeling apparatus, comprising:
a stage configured to fix a substrate on which a flexible display panel is disposed; and
a peeling plate comprising a convex bottom surface configured to contact the flexible display panel and adsorption units disposed at the convex bottom surface,
wherein the peeling plate is configured to be rolled on the flexible display panel to peel the flexible panel from the substrate,
wherein the peeling plate comprises a flat top surface, and
wherein the convex bottom surface comprises a curved surface having a curvature radius greater than a height of the peeling plate.

10. The flexible display panel peeling apparatus of claim 9 , wherein:
a first end of the convex bottom surface contacts a first panel end of the flexible display panel; and
the peeling plate is configured to successively peel the flexible display panel from the first panel end to a second panel end of the flexible display panel.

11. The flexible display panel peeling apparatus of claim 10 , further comprising:
a peeling knife configured to be inserted in a first direction between the flexible display panel and the substrate, and to initially peel the flexible display panel from the substrate in a second direction, the first direction being a rolling direction of the peeling plate and the second direction being perpendicular to the first direction.

12. The flexible display panel peeling apparatus of claim 10 , wherein the substrate comprises a first region and a second region, the first region being adjacent to the first panel end, and
the flexible display panel peeling apparatus further comprises a scribing unit configured to scribe, along a boundary between the first region and the second region, a bottom surface of the substrate opposite to a top surface of the substrate contacting the flexible display panel.

13. The flexible display panel peeling apparatus of claim 12 , further comprising a substrate inverting unit configured to invert and re-invert the flexible display panel and the substrate,
wherein the scribing unit is configured to scribe the flexible display panel and the substrate when the flexible display panel and the substrate are inverted.

14. The flexible display panel peeling apparatus of claim 9 , wherein:
the peeling plate comprises a flat top surface; and
an outer circumferential length of the convex bottom surface of the peeling plate is greater than a first length of the flexible display panel in a first direction.

15. The flexible display panel peeling apparatus of claim 14 , wherein:
a first end of the peeling plate comprises a length in a second direction greater than a second length of the flexible display panel in the second direction; and
the second direction is perpendicular to the first direction.

16. The flexible display panel peeling apparatus of claim 9 , wherein the adsorption units are configured to vacuum-adsorb the flexible display panel.

17. The flexible display panel peeling apparatus of claim 16 , wherein the adsorption units are disposed in a matrix shape on the convex bottom surface of the peeling plate.

18. The flexible display panel peeling apparatus of claim 9 , further comprising a stage comprising an adsorption pad disposed to face the substrate, the adsorption pad being configured to adsorb the substrate to the stage.

19. The flexible display panel peeling apparatus of claim 18 , wherein the adsorption pad is configured to vacuum-adsorb the substrate.

20. The flexible display panel peeling apparatus of claim 9 , wherein the substrate is configured to support one of an organic light emitting display panel, a liquid crystal display panel, a plasma display panel, an electrophoretic display panel, and an electrowetting display panel as the flexible display panel.

Assignees

• Samsung Display Co Ltd

Inventors

• Koo Hyunwoo
• Lee Jusuck
• Kim Taewoong
• Choi Danbi
• Kim Sunho
• Choi Kyungmin
• Khachatryan Hayk

Classifications

• B32B38/10

  Removing layers, or parts of layers, mechanically or chemically · CPC title

• Y10T156/1168

  Gripping and pulling work apart during delaminating · CPC title

• Y10T156/1978

  Delaminating bending means · CPC title

• Y10T156/1944

  Vacuum delaminating means [e.g., vacuum chamber, etc.] · CPC title

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title