LIQUID CRYSTAL DISPLAY

• US 20090147172A1
• Filed: 11/20/2008
• Published: 06/11/2009
• Est. Priority Date: 12/07/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: AN, Jun Seok, BYOUN, Dae Hyoun
• Granted Patent: US 7,852,428 B2
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133604 with lamps
• CPC Class Codes: G02F 1/133605 including specially adapted reflectors
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 2201/54 Arrangements for reducing warping-twist

Abstract

A liquid crystal display to reduce a number of parts forming a back light unit includes a liquid crystal panel, a light source to illuminate light on the liquid crystal panel, a reflection plate to reflect light emitted from the light source toward the liquid crystal panel, the light source is disposed on the reflection plate, and a support bracket disposed on a rear surface of the reflection plate to reinforce a strength of the reflection plate.

Claims

1. A liquid crystal display, comprising:

a liquid crystal panel;

a light source to illuminate light on the liquid crystal panel;

a reflection plate to reflect light emitted from the light source toward the liquid crystal panel, the light source is disposed on the reflection plate; and

a support bracket disposed on a rear surface of the reflection plate to reinforce a strength of the reflection plate.

2. The liquid crystal display according to claim 1, wherein the reflection plate is formed of a light reflective resin.

3. The liquid crystal display according to claim 1, wherein the reflection plate comprises:

a reflection portion having an inclined surface formed at an outer portion of the reflection plate to reflect light emitted from the light source toward the liquid crystal panel.

4. The liquid crystal display according to claim 1, wherein a lamp holder is formed on a front surface of the reflection plate to fix the light source.

5. The liquid crystal display according to claim 1, wherein the light source comprises:

a cathode fluorescence lamp (CFL).

6. The liquid crystal display according to claim 1, wherein a diffusion plate is disposed in front of the reflection plate to diffuse light emitted from the light source, and a boss is formed on a front surface of the reflection plate to support the diffusion plate to be spaced from the light source.

7. The liquid crystal display according to claim 1, wherein a side mold is formed on the reflection plate to finish a side surface of the reflection plate to prevent light from leaking out.

8. The liquid crystal display according to claim 7, wherein the side mold has a receiving groove to fixedly receive the light source.

9. The liquid crystal display according to claim 1, wherein the reflection plate includes a socket on at least one side of opposite sides of the reflection plate to provide an electrical connection of the light source while supporting the light source.

10. The liquid crystal display according to claim 9, wherein the socket comprises:

a lamp receiving portion to support the light source and is formed integrally with the reflection plate;

a connection terminal which is connected to an electrode of the light source and a power supply substrate; and

a terminal insertion groove into which the connection terminal is fixedly inserted.

11. The liquid crystal display according to claim 1, wherein the reflection plate is formed of a material including a glass fiber and a polycarbonate.

12. The liquid crystal display according to claim 11, wherein a ratio of the glass fiber to the polycarbonate is in a range of 10% to 20%.

13. A liquid crystal display, comprising:

a liquid crystal panel;

a reflection plate to reflect light toward the liquid crystal panel; and

at least one of one or more reinforcement ribs and one or more support brackets disposed on a rear surface of the reflection plate to reinforce a strength of the reflection plate.