Liquid crystal display with housing exposed flexible printed circuit

• US 8,848,128 B2
• Filed: 03/10/2011
• Issued: 09/30/2014
• Est. Priority Date: 06/07/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Han, Ho-Seok, Lee, Myung-Han, Yoo, Jeong-Geun, Kim, Sung-Hyun
• Primary Examiner(s): Nguyen, Hoan C
• Application Number:
  US13/045,296
• Publication Number:
  US 20110164199A1
• Time in Patent Office: 1,300 Days
• Field of Search: 349/58
• US Class Current: 349/58
• 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 plurality of sides and where the liquid crystal panel is accommodated from above;

a flexible printed circuit board of which a first end is in contact with the liquid crystal panel and a second end is disposed under the first housing and contacting a bottom surface of the first housing; and

a second housing at least partially enclosing the first housing, the second housing having a bottom and a side, wherein continuous sections of the bottom and the side are removed to form an opening.

2. The liquid crystal display of claim 1, further comprising a reflective sheet disposed on the bottom of the second housing, wherein the flexible printed circuit board bends along the sides of the first housing with the other side of the flexible printed circuit nonoverlapping the reflective sheet.

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

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

an adhesive layer attaching the reflective sheet to the bottom,

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

5. The liquid crystal display of claim 1, wherein the first housing further has a seating step formed along the inside of the sides 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 1, 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.

8. The liquid crystal display of claim 7, wherein:

the sides of the first housing include first housing-first sides and first housing-second sides;

the flexible printed circuit board bends along the first housing-first sides; and

the first housing-second sides have a second guide groove to guide the extension of the flexible printed circuit board bending.

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

10. The liquid crystal display of claim 7, wherein a connector-mounted portion connection groove through which the connector-mounted portion protrudes outside is formed at a side of the cutout.