Liquid crystal display module including light-blocking tape

• US 20090147174A1
• Filed: 11/20/2008
• Published: 06/11/2009
• Est. Priority Date: 12/07/2007
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Ha, Heon-Soo, Choi, Hee-Ryoul
• Granted Patent: US 7,973,873 B2
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133606 including a specially adapted diffusing, scattering or light controlling members

Abstract

A liquid crystal display module includes a cover bottom, a reflection sheet over the cover bottom, a light guide plate over the reflection sheet and including at least one first protrusion, a lamp at a side of the light guide plate, optical sheets over the light guide plate, a support main surrounding the light guide plate and the optical sheets and including a projected part at an inner surface thereof, a liquid crystal panel disposed supported by the projected part of the support main, a light-blocking tape between the projected part and the liquid crystal panel, the light-blocking tape including at least one second protrusion corresponding to the at least one first protrusion, and a top cover covering edges of a front surface of the liquid crystal panel and combined with the support main and the cover bottom.

Claims

1. A liquid crystal display module, comprising:

a cover bottom;

a reflection sheet over the cover bottom;

a light guide plate over the reflection sheet and including at least one first protrusion;

a lamp at a side of the light guide plate;

optical sheets over the light guide plate;

a support main surrounding the light guide plate and the optical sheets and including a projected part at an inner surface thereof;

a liquid crystal panel disposed supported by the projected part of the support main;

a light-blocking tape between the projected part and the liquid crystal panel, the light-blocking tape including at least one second protrusion corresponding to the at least one first protrusion; and

a top cover covering edges of a front surface of the liquid crystal panel and combined with the support main and the cover bottom.

2. The module according to claim 1, wherein the light-blocking tape has a rectangular frame shape and has a width such that the light-blocking tape partially overlaps a rear surface of the liquid crystal panel.

3. The module according to claim 2, wherein the at least one second protrusion has a width 1.5 to 2.0 times wider than the at least one first protrusion.

4. The module according to claim 2, wherein the liquid crystal panel includes a printed circuit board at a side thereof, and the light-blocking tape includes first, second, third and fourth portions, wherein the first portion corresponds to the printed circuit board and has a wider width than the second, third and fourth portions.

5. The module according to claim 1, wherein the at least one first protrusion includes a plurality of first protrusions, and the plurality of first protrusions are spaced apart from each other along a side surface of the light guide plate.

6. The module according to claim 5, wherein the plurality of first protrusions are disposed in a zigzag shape.

7. The module according to claim 1, wherein a width of the projected part at which the at least one second protrusion is attached is about 1.2 to about 2 times as wide as a width of the projected part at which the at least one second protrusion is not attached.