Liquid crystal display

• US 8,416,360 B2
• Filed: 08/07/2009
• Issued: 04/09/2013
• Est. Priority Date: 11/27/2008
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Kim, Youngsung, Son, Sukho, Hwang, Jaeho
• Primary Examiner(s): Glick, Edward
• Assistant Examiner(s): Nguyen, Sang V
• Application Number:
  US12/537,337
• Publication Number:
  US 20100128193A1
• Time in Patent Office: 1,341 Days
• Field of Search: 349 58- 63, 362/612, 362/97.1
• US Class Current: 349/58
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 1/133628 with cooling means

Abstract

The invention relate to a liquid crystal display that can improve heat radiation properties as well as may comply with a slim trend of displays. The liquid crystal display including: a liquid crystal panel; a PCB for light source that mounts a plurality of light sources which generate light illuminating the liquid crystal panel, and supplies operation power to the light sources; a bottom cover that includes a receiving unit of which bottom surface is opened and a seating space of which bottom surface is not opened, receives the PCB for light source, and externally exposes a part of a rear surface of the PCB for light source through the receiving unit; a main PCB that supplies a driving signal to the liquid crystal panel and the PCB for light source; and a panel guide that includes a lamination unit receiving the liquid crystal panel and an insertion space receiving the main PCB in a direction perpendicular to the liquid crystal panel, wherein the main PCB is inserted into the insertion space to be positioned within the seating space of the bottom cover.

Claims

1. A liquid crystal display comprising:

a liquid crystal panel;

a PCB (printed circuit board) for light source that mounts a plurality of light sources which generate light illuminating directly on a back surface of the liquid crystal panel, supplies operation power to the light sources, and is disposed in a direction parallel to the liquid crystal panel;

a bottom cover that includes a receiving unit of which bottom surface is opened and a seating space of which bottom surface is not opened, receives the PCB for light source, and directly exposes a part of a rear surface of the PCB for light source to an external environment through the receiving unit;

a main PCB that supplies a driving signal to the liquid crystal panel and the PCB for light source;

a panel guide that includes a lamination unit receiving the liquid crystal panel and an insertion space receiving the main PCB in a direction perpendicular to the liquid crystal panel;

a first connector formed at a side of the PCB for light source to receive the driving signal; and

a second connector formed at the main PCB in the seating space for coupling with the first connector,

wherein the main PCB is inserted into the insertion space to be positioned within the seating space of the bottom cover, such that the main PCB is disposed at one side portion of the liquid crystal panel and the PCB for light source.

2. The liquid crystal display of claim 1, wherein

the liquid crystal panel receives the driving signal through an FPC (flexible printed circuit) connected to the liquid crystal panel, wherein

the FPC is extended to surround an external surface of the panel guide and then bent to be electrically connected to the main PCB.

3. The liquid crystal display of claim 2, further comprising:

a top case that surrounds a periphery of the liquid crystal panel, and an external surface of the panel guide and the bottom cover, wherein

the FPC is shielded by the top case.

4. The liquid crystal display of claim 1, further comprising:

a reflection sheet that includes a base surface and wing surfaces, wherein

the base surface includes pores of exposing the plurality of light sources and is attached to the PCB for light source, and the wing surfaces are extended from the base surface and is attached to an internal side wall surface of the panel guide configuring the lamination unit.

5. The liquid crystal display of claim 1, wherein

the receiving unit of the bottom cover forms a “

Z banding”

structure by contacting the PCB for light source.

6. The liquid crystal display of claim 1, wherein

the bottom cover further includes a ground protrusion that is protruded from a side of a bottom surface of the seating space toward the liquid crystal panel so as to contact the main PCB.

7. The liquid crystal display of claim 6, wherein

the ground protrusion includes a convex part bent toward the main PCB and a straight line part extended in both sides and elastically pressurizes the main PCB in the seating space.

8. The liquid crystal display of claim 1, wherein

the panel guide further includes guiding grooves that guide insertion of the main PCB in the seating space.