Liquid crystal display module

• US 20050073626A1
• Filed: 10/06/2004
• Published: 04/07/2005
• Est. Priority Date: 10/07/2003
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Philips LCD Company Limited (LG Display Co., Ltd.)
• Inventors: Yeom, Moon-Soo
• Granted Patent: US 7,505,093 B2
• Time in Patent Office: Days
• US Class Current: 349/64
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 2201/54 Arrangements for reducing warping-twist

Abstract

A liquid crystal display module includes a backlight assembly having a lamp, a lamp housing surrounding the lamp and having an open portion along a first side, a light guide plate disposed adjacent to the open portion of the lamp housing, and a plurality of optical sheets disposed on the light guide plate, edge portions of the plurality of optical sheets are disposed spaced apart from the light guide plate by interposing a top portion of the lamp housing between a periphery of the light guide plate and the edge portions of the plurality of optical sheet, a liquid crystal panel disposed over the plurality of optical sheets, a main support disposed over the lamp housing and accommodating the liquid crystal panel, a top case surrounding edge portions of the liquid crystal panel, and a bottom case supporting and accommodating the backlight assembly.

Claims

1. A liquid crystal display module, comprising:

a backlight assembly including;

a lamp,

a lamp housing surrounding the lamp and having an open portion along a first side,

a light guide plate disposed adjacent to the open portion of the lamp housing, and

a plurality of optical sheets disposed on the light guide plate, edge portions of the plurality of optical sheets are disposed spaced apart from the light guide plate by interposing a top portion of the lamp housing between a periphery of the light guide plate and the edge portions of the plurality of optical sheets;

a liquid crystal panel disposed over the plurality of optical sheets;

a main support disposed over the lamp housing and accommodating the liquid crystal panel;

a top case surrounding edge portions of the liquid crystal panel; and

a bottom case supporting and accommodating the backlight assembly.

2. The display module according to claim 1, wherein the liquid crystal panel includes lower and upper polarizers on its outer surface.

3. The display module according to claim 2, wherein the edge portions of the plurality of optical sheets are disposed on the lower polarizer.

4. The display module according to claim 2, wherein the top case directly contacts the upper polarizer to secure the liquid crystal panel.

5. The display module according to claim 1, wherein the top case is spaced apart from the main support.

6. The display module according to claim 1, further comprising a reflector disposed beneath the light guide plate.

7. The display module according to claim 1, wherein the plurality of optical sheets include at least a light diffusing sheet and two prism sheets.

8. The display module according to claim 1, wherein the top case is coupled to the bottom case.

9. The display module according to claim 1, wherein the top case has an L-shaped cross section.

10. A backlight unit for a liquid crystal module having a liquid crystal panel, comprising:

a lamp;

a lamp housing surrounding the lamp and having an open portion along a first side;

a light guide plate disposed adjacent to the open portion of the lamp housing;

a reflector disposed beneath the light guide plate; and

a plurality of optical sheets disposed on the light guide plate,

wherein edge portions of the plurality of optical sheets are disposed spaced apart from the light guide plate by interposing a top portion of the lamp housing between a periphery of the light guide plate and the edge portions of the plurality of optical sheets.

11. The backlight unit according to claim 10, wherein the plurality of optical sheets include at least a light diffusing sheet and two prism sheets.