IP Library Granted Patent US 7,322,734
Granted Patent B2
US 7,322,734 · App. 11/316,927 · Granted Jan 29, 2008

Backlight module and its back plate

Assignee: Chunghwa Picture Tubes, Ltd.
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Quick Facts
Patent No.
US 7,322,734
App. No.
11/316,927
Granted
Jan 29, 2008
Kind
B2
Abstract

A liquid crystal display (LCD) structure is provided. The LCD structure is that a backlight module having ventilated thin film with high reflective material combines with a liquid crystal panel. The backlight module includes a bottom and at least a ventilated thin film with high reflective material. The side plates of the bottom have at least an opening, and the ventilated thin film with high reflective material is disposed at the openings. The backlight module, making use of the openings at the bottom of the backplate and the ventilated thin film with high reflected material, can improve the heat-dissipating mechanism of the backlight module, thereby, can effectively lower the temperature of the backlight module.

Claims (24)

1. A backlight module, applying in a liquid crystal display (LCD), comprising:

a backplate having a bottom and at least a side wall extending upward from the bottom and the side wall having a plurality of openings apart from each other;

at least a non-woven fabric with a highly reflective material coated thereon disposed on the openings, wherein the non-woven fabric has a plurality of holes;

a light source disposed above the bottom; and

a diffuser disposed above the light source; and further comprising a frame, a first side frame, and a second side frame on the bottom of the backplate, wherein the first side frame is disposed on one side of the bottom, while the second side frame is disposed on the other side of the bottom, and the frame is disposed on the upper edge of an enhancement film, while the lower side surface of the frame is attached with the first side frame and the second side frame.

2. The backlight module as claimed in claim 1 , further comprising a reflective layer on the backplate.

3. The backlight module as claimed in claim 1 , further comprising at least an optical sheet disposed above the bottom of the backplate.

4. The backlight module as claimed in claim 3 , wherein the optical sheet is an enhancement film.

5. The backlight module as claimed in claim 3 , wherein the optical sheet is a light collecting sheet.

6. The backlight module as claimed in claim 1 , wherein the material of the ventilated thin film with the highly reflective material is a resin-based material consisting of a light stabilizer and a reflective agent.

7. The backlight module as claimed in claim 1 , wherein the highly reflective material is a titanium dioxide (TiO2).

8. A liquid crystal display (LCD), comprising:

a backlight module, including:

a bottom and at least a side wall extending upward from the bottom, and the side wall having several openings apart from each other;

at least a non-woven fabric with a highly reflective material formed thereon disposed on the openings, wherein the non-woven fabric has a plurality of holes;

a light source disposed above the bottom; and

a diffuser disposed above the light source;

a liquid crystal panel having a display surface and a backlight surface for combining with the backlight module.

9. The LCD as claimed in claim 8 , further comprising a reflective layer on the backplate.

10. The LCD as claimed in claim 8 , further comprising at least an optical sheet disposed above the bottom of the backplate.

11. The LCD as claimed in claim 10 , wherein the optical sheet is an enhancement film.

12. The LCD as claimed in claim 10 , wherein the optical sheet is a light collecting sheet.

13. The LCD as claimed in claim 8 , wherein the material of the ventilated thin film with the highly reflective material is a resin-based material consisting of a light stabilizer and a reflective agent.

14. The LCD as claimed in claim 8 , wherein the highly reflective material is a titanium dioxide (TiO2).

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2013
From: CHUNGHWA PICTURE TUBES, LTD.
To: CPT TECHNOLOGY (GROUP) CO., LTD.
Reel/Frame 030763/0316 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 27, 2005
From: SHAI, RU-JIH; LIAO, CHENG-MIN
To: CHUNGHWA PICTURE TUBES, LTD.
Reel/Frame 017421/0911 →
Continuity (1)
Related Publication 20070147021A1 · Jun 28, 2007