IP Library Granted Patent US 8,062,457
Granted Patent B2
US 8,062,457 · App. 12/087,259 · Granted Nov 22, 2011

Method for producing surface protection plate for liquid crystal displays and method for producing liquid crystal display

Assignee: Kimoto Co., Ltd.
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Quick Facts
Patent No.
US 8,062,457
App. No.
12/087,259
Granted
Nov 22, 2011
Kind
B2
Abstract

At least two or more plastic films are adhered via an adhesive layer or layers to produce a laminate plate having a total thickness of the plastic films of 250 to 700 μm, and then the laminate plate is subjected to die cutting to obtain a surface protection plate 5 . The thickness of each plastic film is preferably chosen to be 50 to 400 μm. A surface protection plate having superior rigidity can be thereby easily produced with a smaller thickness. The thus obtained surface protection plate 5 can be suitably used as the surface protection plate 5 of the liquid crystal display 6.

Claims (8)

1. A method for producing a surface protection plate for a liquid crystal display enclosed within a case frame, the method comprising:

adhering at least two plastic films via an adhesive layer or adhesive layers, each plastic film being formed of polyethylene terephthalate material and biaxially stretched, the adhesive layer or each of the adhesive layers having a thickness of 5-100 μm;

curing the adhesive layer or adhesive layers to prepare a laminate plate having a total thickness of the plastic films of 250 to 700 μm;

die-cutting the laminate plate to obtain a surface protection plate; and

installing the surface protection plate within the case frame, thereby forming the liquid crystal display inclusive of the surface protection plate providing a display surface.

2. The method for producing a surface protection plate for a liquid crystal display according to claim 1 , wherein the at least two plastic films each have a thickness of 50 to 400 μm.

3. The method for producing a surface protection plate for a liquid crystal displays according to claim 1 , wherein three of the plastic films are used in the adhering step.

4. The method for producing a surface protection plate for a liquid crystal displays according to claim 1 , wherein two plastic films forming outermost opposing surfaces of the surface protection plate have the same thickness.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 30, 2008
From: USHIO, SEIJI; KIMURA, YOSHIHISA; NISHINAGA, HIKARU
To: KIMOTO CO., LTD.
Reel/Frame 021225/0893 →
Priority Claims (1)
JP 2006-004541 · Jan 12, 2006 · national
Continuity (1)
Related Publication 20090000728A1 · Jan 1, 2009