IP Library Granted Patent US 8,139,177
Granted Patent B2
US 8,139,177 · App. 12/485,105 · Granted Mar 20, 2012

Liquid crystal display device

Assignees: Hitachi Displays, Ltd.; Panasonic Liquid Crystal Display Co., Ltd.
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Quick Facts
Patent No.
US 8,139,177
App. No.
12/485,105
Granted
Mar 20, 2012
Kind
B2
Abstract

In a liquid crystal display device having a liquid crystal display panel which includes a first substrate and a second substrate, a back plate is arranged on a first-substrate-side of the liquid crystal display panel, a first polarizer is arranged between the back plate and the first substrate, the first polarizer is adhered to the back plate, a face plate is arranged on a second-substrate-side of the liquid crystal display panel, a second polarizer is arranged between the face plate and the second substrate, and the second polarizer is adhered to the face plate.

Claims (21)

1. A liquid crystal display device comprising:

a liquid crystal display panel which includes a first substrate, a second substrate, and liquid crystal sandwiched between the first substrate and the second substrate;

a face frame which houses the liquid crystal display panel in a state where the face frame covers a peripheral portion of the liquid crystal display panel; and

a backlight which is arranged on a side of the liquid crystal display panel opposite to the face frame, wherein

the first substrate and the second substrate are formed of a glass substrate,

the liquid crystal display panel has a main surface which is a display screen,

the main surface of the liquid crystal display panel being a curved surface,

a back plate is arranged on the first substrate side of the liquid crystal display panel, a first polarizer is arranged between the back plate and the first substrate,

the first polarizer is adhered to the back plate and is not adhered to the first substrate,

a face plate is arranged on the second substrate side of the liquid crystal display panel, a second polarizer is arranged between the face plate and the second substrate, and

the second polarizer is adhered to the face plate and is not adhered to the second substrate.

2. A liquid crystal display device according to claim 1 , wherein the face frame has a curved surface, and the liquid crystal display panel is brought into contact with the curved surface of the face frame by way of the face plate.

3. A liquid crystal display device according to claim 1 , wherein the face plate and the back plate are made of a light transmitting resin.

4. A liquid crystal display device according to claim 3 , wherein a material of the face plate and the back plate is any one of a polycarbonate resin, an acrylic resin and plastics.

5. A liquid crystal display device according to claim 1 , wherein the backlight has a diffusion plate, the diffusion plate has a curved surface, and the curved surface of the diffusion plate is aligned with the curved surface of the liquid crystal display panel.

6. A liquid crystal display device according to claim 5 , wherein the backlight has a plurality of optical sheets, the diffusion plate has a recessed portion on the liquid crystal display side, and the plurality of optical sheets are arranged in the recessed portion.

7. A liquid crystal display device according to claim 1 , wherein the curved surface of the liquid crystal display panel is formed in an outwardly projecting shape.

8. A liquid crystal display device according to claim 1 , wherein the curved surface of the liquid crystal display panel is formed in an outwardly recessed shape.

9. A liquid crystal display device according to claim 1 , wherein thin film transistors are formed on the first substrate and color filters are formed on the second substrate.

10. A liquid crystal display device according to claim 1 , wherein assuming a curvature radius of the curved surface of the liquid crystal display panel as R and a total thickness of a thickness of the first substrate and a thickness of the second substrate as t, a relationship of R>400t is satisfied.

11. A liquid crystal display device according to claim 1 , wherein the first polarizer which is adhered to the back plate and the second polarizer which is adhered to the face plate are disposed so as to enable contact with the liquid crystal display panel without being adhered thereto.

Assignments (8)
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 →
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 →
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 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE IN PATENT APPLICATIONS Recorded Oct 20, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027092/0684 →
MERGER Recorded Oct 20, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027093/0937 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 16, 2009
From: NISHIZAWA, SHIGEKI
To: HITACHI DISPLAYS, LTD.
Reel/Frame 022829/0384 →
Priority Claims (1)
JP 2008-159257 · Jun 18, 2008 · national
Continuity (1)
Related Publication 20090316062A1 · Dec 24, 2009