Liquid crystal display module

• US 7,307,676 B2
• Filed: 10/14/2004
• Issued: 12/11/2007
• Est. Priority Date: 11/21/2003
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Philips LCD Company Limited (LG Display Co., Ltd.)
• Inventors: Jeon, Seong Man
• Primary Examiner(s): Qi, Mike
• Application Number:
  US10/963,595
• Publication Number:
  US 20050110921A1
• Time in Patent Office: 1,153 Days
• Field of Search: 349/64, 361/31, 361/26
• US Class Current: 349/64
• CPC Class Codes: G02F 1/133604 with lamps
• CPC Class Codes: G02F 1/133605 including specially adapted reflectors

Abstract

A liquid crystal display module arranged to improve brightness and light efficiency of a direct-below-type back light unit. The liquid crystal display module includes a plurality of lamps; a reflection plate arranged to accommodate the plurality of lamps; a plurality of first triangular protrusions protruded from the reflection plate between the lamps; a diffusion plate on the reflection plate; an optical film on the diffusion plate; and a liquid crystal display panel on the optical film.

Claims

1. A liquid crystal display module comprising:

a plurality of lamps;

a reflection plate arranged to accommodate the plurality of lamps;

a plurality of first triangular protrusions protruded from the reflection plate between the lamps;

a diffusion plate on the reflection plate;

an optical film on the diffusion plate; and

a liquid crystal display panel on the optical film;

wherein each of the first triangular protrusions has a height of at least about 3 mm and is adjacent a rear surface of the diffusion plate.

2. The liquid crystal display module according to claim 1, further comprising a plurality of second triangular protrusions protruded from the reflection plate, wherein a vertex of each of the second triangular protrusions corresponds to a middle portion of each of the respective lamps.

3. The liquid crystal display module according to claim 2, wherein each of the second triangular protrusions has a height of at least about 3 mm and is adjacent an end of the respective lamps facing the reflection plate.

4. The liquid crystal display module according to claim 2, wherein an angle of lateral sides of the respective first triangular protrusions and the respective second triangular protrusions is in a range of about 30°

to 80°

.

5. The liquid crystal display module according to claim 2, wherein an angle of lateral sides of the first and second triangular protrusions is about 45°

.

6. The liquid crystal display module according to claim 1, wherein an angle of lateral sides of the first triangular protrusion is about 45°

.

7. The liquid crystal display module according to claim 1, wherein a distance between the reflection plate and a middle portion of the respective lamps is in a range of about 3 mm to 10 mm.

8. The liquid crystal display module according to claim 1, wherein a material for the reflection plate includes a micro-forming polyethyleneterphthalate (MCPET).

9. The liquid crystal display module according to claim 1, wherein an angle of lateral sides of the first triangular protrusions is in a range of about 30°

to 80°

.

10. A liquid crystal display module comprising:

a plurality of lamps;

a reflection plate arranged to accommodate the plurality of lamps;

a plurality of first protrusions protruded from the reflection plate between the lamps;

a diffusion plate on the reflection plate;

an optical film on the diffusion plate; and

a liquid crystal display panel on the optical film;

wherein each of the first protrusions has a height of at least about 3 mm and is adjacent a rear surface of the diffusion plate.

11. The liquid crystal display module of claim 10, wherein the plurality of first protrusions are triangular.

12. The liquid crystal display module of claim 10, further comprising a plurality of second protrusions.

13. The liquid crystal display module of claim 12, wherein the plurality of second protrusions are at least one of triangular, trapezoidal and hexagonal.

14. The liquid crystal display module of claim 10, wherein a material for the reflection plate includes a micro-forming polyethyleneterphthalate (MCPET).