IP Library Granted Patent US 7,916,239
Granted Patent B2
US 7,916,239 · App. 12/255,680 · Granted Mar 29, 2011

Liquid crystal display device

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,916,239
App. No.
12/255,680
Granted
Mar 29, 2011
Kind
B2
Abstract

To provide a liquid crystal display device where supports for fluorescent lamps can be prevented from vibrating without affecting the ease of attachment of the supports for fluorescent lamps to the frame for the backlight. A liquid crystal display device having: a liquid crystal display panel; and a backlight having a light source for illuminating the liquid crystal display panel is characterized in that said backlight comprises at least a number of fluorescent lamps in rod form aligned in a plane facing said liquid crystal display panel, supports for fluorescent lamps for supporting the fluorescent lamps in rod form, and a frame to which the supports for fluorescent lamps are secured, and said supports for fluorescent lamps have an engaging portion for insertion into a hole created in said frame and the surface of said supports for fluorescent lamps where said engaging portion is formed has protrusions.

Claims (18)

1. A liquid crystal display device, comprising:

a liquid crystal display panel; and

a backlight having a light source for illuminating the liquid crystal display panel,

wherein said backlight comprises at least a number of fluorescent lamps in rod form aligned in a plane facing said liquid crystal display panel, supports for fluorescent lamps for supporting the fluorescent lamps in rod form, and a frame to which said supports for fluorescent lamps are secured,

wherein said supports for fluorescent lamps have an engaging portion for insertion into a hole created in said frame and a surface of said supports for fluorescent lamps where said engaging portion is formed has protrusions, and

wherein said supports for fluorescent lamps have bumps sticking out in a direction perpendicular to a long side of said supports for fluorescent lamps, the bumps has a plane of a same level same as said supports, and said protrusions are formed on said bumps.

2. The liquid crystal display device according to claim 1 , wherein a reflective sheet is placed between said supports for fluorescent lamps and said frame.

3. The liquid crystal display device according to claim 1 , wherein said protrusions are in rod form and parallel to a short side of said supports for fluorescent lamps, and formed on both sides of said engaging portion.

4. The liquid crystal display device according to claim 1 , wherein said protrusions are in rod form and parallel to a short side of said supports for fluorescent lamps, and formed on both sides of the short side of said supports for fluorescent lamps.

5. The liquid crystal display device according to claim 1 , wherein said protrusions are in circular form, and a number of protrusions are formed per support for fluorescent lamp.

6. A liquid crystal display device, comprising:

a liquid crystal display panel; and

a backlight having a light source for illuminating the liquid crystal display panel,

wherein said backlight comprises at least a number of fluorescent lamps in rod form aligned in a plane facing said liquid crystal display panel, supports for fluorescent lamps for supporting the fluorescent lamps in rod form, and a frame to which said supports for fluorescent lamps are secured,

wherein said supports for fluorescent lamps have an engaging portion for insertion into a hole created in said frame, and

wherein a cushioning material intervenes between said supports for fluorescent lamps and said frame, said cushioning material having a shape substantially the same as said supports for fluorescent lamps.

7. The liquid crystal display device according to claim 6 , wherein said cushioning material is formed so as to have a hole corresponding to the portion where said hole is created in said frame.

8. The liquid crystal display device according to claim 6 , wherein a reflective sheet is placed between said supports for fluorescent lamps and said frame, and said cushioning material is placed between said supports for fluorescent lamps and said reflective sheet or between said reflective sheet and said frame.

Assignments (2)
CHANGE OF NAME Recorded May 10, 2011
From: IPS ALPHA TECHNOLOGY, LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 026257/0377 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 4, 2008
From: TSUBOKURA, MASAKI; ITAKURA, SHIMON
To: HITACHI DISPLAYS, LTD.; IPS ALPHA TECHNOLOGY, LTD.
Reel/Frame 021950/0466 →