FLEXIBLE DISPLAY PANEL PEELING APPARATUS AND PEELING METHOD USING THE SAME

• US 20150122427A1
• Filed: 06/26/2014
• Published: 05/07/2015
• Est. Priority Date: 11/01/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KOO, Hyunwoo, KIM, Taewoong, KIM, Sunho, KHACHATRYAN, Hayk, LEE, Jusuck, CHOI, Danbi, CHOI, Kyungmin
• Granted Patent: US 9,393,769 B2
• Time in Patent Office: Days
• US Class Current: 156/707
• CPC Class Codes: B32B 2457/20 Displays, e.g. liquid crystal displays, plasma displays
• CPC Class Codes: B32B 38/10 Removing layers, or parts of layers, mechanically or chemically
• CPC Class Codes: B32B 43/006 Delaminating
• CPC Class Codes: Y10T 156/1132 Using vacuum directly against work during delaminating
• CPC Class Codes: Y10T 156/1168 Gripping and pulling work apart during delaminating
• CPC Class Codes: Y10T 156/1944 Vacuum delaminating means [e.g., vacuum chamber, etc.]
• CPC Class Codes: Y10T 156/1978 Delaminating bending means

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.

Claims

1. A flexible display panel peeling method, comprising:

providing a substrate on which a flexible display panel is disposed;

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 rolling the peeling plate on the flexible display panel.

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 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.

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 peel 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:

the 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.