IP Library Granted Patent US 8,134,667
Granted Patent B1
US 8,134,667 · App. 13/230,091 · Granted Mar 13, 2012

Liquid crystal display device

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Quick Facts
Patent No.
US 8,134,667
App. No.
13/230,091
Granted
Mar 13, 2012
Kind
B1
Abstract

A liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate disposed on an observer side of the first substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate, and a transparent cover affixed by a first bonding member to a surface of the liquid crystal display panel on the observer side. The transparent cover has an optical member affixed by a second bonding member to a surface of the transparent cover facing the second substrate, and when viewed in plan, an edge of the transparent cover and an edge of the optical member protrude outside the second substrate.

Claims (25)

1. A liquid crystal display device comprising:

a liquid crystal display panel having a first substrate, a second substrate disposed on an observer side of the first substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate, and

a transparent cover affixed by means of a first bonding member to a surface of the liquid crystal display panel on the observer side, wherein

the transparent cover has an optical member affixed by means of a second bonding member to a surface of the transparent cover facing the second substrate, and

when viewed in plan, an edge of the transparent cover and an edge of the optical member protrude outside the second substrate.

2. The liquid crystal display device according to claim 1 , wherein

the second substrate has a chemically polished surface on the observer side,

the first bonding member, as well as making direct contact with both the polished surface of the second substrate and the optical member, covers all of a surface portion of the second substrate corresponding to a display area, and

the first bonding member is 30 to 200 μm in thickness, while the second bonding member is 10 to 25 μm in thickness.

3. The liquid crystal display device according to claim 1 , wherein

the first bonding member is 30 to 200 μm in thickness.

4. The liquid crystal display device according to claim 1 , wherein

the first bonding member is 30 to 100 μm in thickness.

5. The liquid crystal display device according to claim 1 , wherein

the first bonding member is an adhesive into which a liquid is cured.

6. The liquid crystal display device according to claim 1 , wherein

the first bonding member is an adhesive.

7. The liquid crystal display device according to claim 1 , wherein

the second bonding member is an adhesive having a thickness of 10 to 25 μm.

8. The liquid crystal display device according to claim 1 , wherein

the optical member includes at least one of a polarizing plate or a retardation plate.

9. The liquid crystal display device according to claim 1 , wherein

the transparent cover is a protective cover configured of a glass plate or a resin plate.

10. The liquid crystal display device according to claim 1 , wherein

the transparent cover has a function of a touch panel.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2025
From: JAPAN DISPLAY INC
To: MAGNOLIA PURPLE CORPORATION
Reel/Frame 071890/0202 →
CHANGE OF NAME Recorded Nov 17, 2023
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST, INC.
Reel/Frame 065614/0223 →
CHANGE OF NAME Recorded Nov 17, 2023
From: JAPAN DISPLAY EAST, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065614/0644 →
CHANGE OF ADDRESS Recorded Nov 17, 2023
From: JAPAN DISPLAY, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065654/0250 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 17, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 065615/0327 →