Liquid crystal display with housing exposed flexible printed circuit

• US 7,924,389 B2
• Filed: 04/17/2008
• Issued: 04/12/2011
• Est. Priority Date: 06/07/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Sung-Hyun, Han, Ho-Seok, Lee, Myung-Han, Yoo, Jeong-Geun
• Primary Examiner(s): Nguyen; Hoan C
• Application Number:
  US12/148,342
• Publication Number:
  US 20080303972A1
• Time in Patent Office: 1,090 Days
• Field of Search: 349/58, 349149-152, 361/681, 361/749, 361/752, 362/630, 362/631, 362/632, 362/633
• US Class Current: 349/150
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels

Abstract

Provided are a liquid crystal display (LCD) that has a reduced cost due to an increase in the thickness of the FPC board included of the display. The liquid crystal display includes a liquid crystal panel, a first housing having a first side and a second side and a plurality of sides, the liquid crystal panel being accommodated on the first side, a flexible printed circuit board having a first side in contact with the liquid crystal panel, and a second side disposed adjacent to the second side of the first housing, a second housing having a bottom, an opening, and a plurality of sides extending from the bottom to define a cavity, wherein the plurality of sides are fastened to the first housing, further wherein the opening is formed through the bottom to expose at least a portion of the flexible printed circuit board, and a reflective sheet disposed on a interior surface of the bottom.

Claims

1. A liquid crystal display comprising:

a liquid crystal panel;

a first housing having a first side and a second side and a plurality of side walls, the liquid crystal panel being accommodated on the first side;

a flexible printed circuit board having a first side in contact with the liquid crystal panel, and a second side disposed adjacent to the second side of the first housing;

a second housing having a bottom, an opening, and a plurality of sides extending from the bottom to define a cavity, wherein the plurality of sides are fastened to the first housing, further wherein the opening is formed through the bottom to expose at least a portion of the flexible printed circuit board; and

a reflective sheet disposed on a interior surface of the bottom.

2. The liquid crystal display of claim 1, wherein the flexible printed circuit board bends along an end of the first housing, and further wherein the second side of the flexible printed circuit does not overlap the reflective sheet.

3. The liquid crystal display of claim 2, wherein the second side of the flexible printed circuit board is accommodated in the opening, nonoverlapping the bottom of the second housing.

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

an adhesive layer between the reflective sheet and the interior surface of the bottom,

wherein a thickness of the flexible printed circuit board is equal to or less than the sum of a thickness of the reflective sheet a thickness of the adhesive layer, and a thickness of the bottom.

5. The liquid crystal display of claim 1, wherein the first housing further includes a seating step formed along the inside of the plurality of side walls of the first housing.

6. The liquid crystal display of claim 5, wherein a light-source groove is formed beneath the seating step.

7. The liquid crystal display of claim 6, wherein the light-source is mounted on the second side of the flexible printed circuit board, and is accommodated in the light-source groove with the second side of the flexible printed circuit board adhering to the seating step.

8. The liquid crystal display of claim 2, wherein the plurality of side walls of the first housing include first housing-first sides having a first guide groove to guide the flexible printed circuit board bending and first housing-second sides adjacent to the first housing-first sides.

9. The liquid crystal display of claim 8, wherein the first guide groove overlaps the opening.

10. The liquid crystal display of claim 8, wherein the flexible printed circuit board further has an extension that extends perpendicularly from the second side of the flexible printed circuit board and a connector-mounted portion connected to the extension.

11. The liquid crystal display of claim 10, wherein the first housing-second side has a second guide groove to guide the extension bending.

12. The liquid crystal display of claim 11, wherein the second guide groove overlaps the opening.

13. The liquid crystal display of claim 10, wherein one of the plurality of sides of the second housing has a connector-mounted portion connection groove through which the connecter-mounted portion protrudes outside.