LIQUID CRYSTAL DISPLAY WITH A BACKLIGHT ASSEMBLY HAVING AN IMPROVED STRUCTURE

• US 20090027584A1
• Filed: 10/22/2007
• Published: 01/29/2009
• Est. Priority Date: 07/25/2007
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Han, Sang Sun, Kim, Yong Il
• Application Number:
  US11/876,281
• Publication Number:
  US 20090027584A1
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means

Abstract

A liquid crystal display with improved backlight structure is presented. The liquid crystal display includes a liquid crystal (LC) panel for displaying image, a backlight assembly for providing light to the LC panel and a top frame combined with the bottom frame to complete LCD assembling. The backlight assembly includes a bottom frame, light source, and optical member. The bottom frame includes a light source receiving part, a side wall and a optical member receiving part which extends inwardly to the inner side of the backlight assembly. Thus, the overall size of the LCD can be reduced.

Claims

1. A backlight assembly, comprising:

a light source;

an optical member disposed over the light source; and

a bottom frame accommodating the light source and the optical member, wherein the bottom frame comprises a first part facing the light source, a second part vertically extended from the first part, and a third part extending inwardly from the second part to the light source and supporting the optical member.

2. The backlight assembly of claim 1, further comprising a slant reflection part that connects the first part and the third part to reflect the light from the light source.

3. The backlight assembly of claim 2, wherein the first part, second part, third part and the slant reflection part form a first space in cross-sectional view.

4. The backlight assembly of claim 3, further comprising a power supplying part, wherein the light source comprises a light emitting part and electrode part for receiving power from the power supplying part, wherein the power supplying part is connected to the electrode part and located inside of the first space.

5. The backlight assembly of claim 4, wherein the power supplying part is spaced apart from the slant reflection part.

6. The backlight assembly of claim 4, wherein the first space is elongated along a first direction, wherein the first direction is parallel to the light source.

7. The backlight assembly of claim 1, wherein the light source is located in proximity to the first part of the bottom frame.

8. The backlight assembly of claim 7, wherein the light source is plane and adhered to the first part of the bottom frame.

9. The backlight assembly of claim 6, wherein the light source comprises a plurality of light emitting diodes (LEDs) on a first board.

10. The backlight assembly of claim 1, wherein the third part is overlapped with the optical member by at least 50 percent in width.

11. A liquid crystal display (LCD), comprising:

a light source;

a liquid crystal (LC) panel having liquid crystal layer, the LC panel disposed over the light source;

an optical member receiving light from the light source, the optical member emitting light to the LC panel;

a bottom frame accommodating the light source, wherein the bottom frame comprises a light source receiving part, a side wall vertically extended from the light source receiving part, and an optical member supporting part extending inwardly toward the light source from the side wall;

a top frame comprising a LC panel holding part and side adjoining wall that overlaps the side wall of the bottom frame; and

an adjoining member combining the bottom frame and the top frame.

12. The LCD of claim 11, wherein the adjoining member penetrates the side wall of the bottom frame and the side adjoining wall of the top frame.

13. The LCD of claim 11, further comprising a middle frame positioned between the top frame and the bottom frame, wherein the middle frame comprises a gap former which maintain a gap between the optical member and the LC panel and a supporting column positioned on the optical member supporting part.

14. The LCD of claim 13, wherein the optical member supporting part has a first overlap area overlapping the optical member and a second overlap area overlapping the supporting member of the middle frame, wherein the fist overlap area is larger than the second overlap area.

15. The LCD of claim 13, wherein the middle frame further comprising a intervening part positioned between the side wall of the bottom frame and the side adjoining wall of the top frame.

16. A liquid crystal display (LCD), comprising:

a liquid crystal (LC) panel for displaying image;

a light source positioned behind the LC panel; and

a light source containing member behind the light source, the light source containing member comprises a first surface substantially parallel to the LC panel, a second surface bent from the first surface to the LC panel direction, and a third surface bent from the second surface toward the light source direction, wherein the third surface at least partially overlaps the LC panel.

17. The LCD of claim 16, the light source is flat and located in close proximity to the first surface.

18. The LCD of claim 17, the light source comprises a board and a plurality of light emitting diodes (LEDs) attached to the board.

19. A method for making a liquid crystal display (LCD), the method comprising:

providing a light source;

facing the light source by placing a bottom frame behind the light source, wherein the bottom frame comprises a first surface facing the light source, a second surface vertically connected to the first surface, and a third surface extending inward and being parallel with the first surface from the second surface;

disposing an optical member on the third surface of the bottom frame, wherein the optical member redirects the light incident to the optical member;

covering the optical member with a liquid crystal (LC) panel; and

adjoining the bottom frame with a top frame, the top frame comprises an LC holding part and side adjoining wall.

20. The method of claim 19, wherein the adjoining of the bottom frame and the top frame is accomplished by a screw that penetrates the side wall of the bottom frame and the side adjoining wall of the top frame.