LIQUID CRYSTAL DISPLAY MODULE

• US 20080225204A1
• Filed: 01/10/2008
• Published: 09/18/2008
• Est. Priority Date: 01/12/2007
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Inventors: Ooshina, Takahiro, Murooka, Shinji, Mishima, Yasuyuki
• Granted Patent: US 7,898,614 B2
• Time in Patent Office: Days
• US Class Current: 349/65
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels

Abstract

The present invention provides a liquid crystal display module which can prevent the generation of display irregularities. The liquid crystal display module includes a liquid crystal display panel and a backlight device arranged on a back surface of the liquid crystal display panel. The backlight device is constituted of a light guide plate and a reflection sheet arranged on a back surface of the light guide plate. The liquid crystal display module includes a flexible printed circuit board having one end thereof mounted on the liquid crystal display panel and the other end thereof formed on a back side of the reflection sheet in an overlapping manner. An insulation sheet is arranged between the other end of the flexible printed circuit board and the reflection sheet.

Claims

1. A liquid crystal display module comprising:

a liquid crystal display panel;

a backlight device arranged on a back surface of the liquid crystal display panel, the backlight device being constituted of a light guide plate and a reflection sheet arranged on a back surface of the light guide plate;

a flexible printed circuit board having one end thereof mounted on the liquid crystal display panel and the other end thereof formed on a back side of the reflection sheet in an overlapping manner; and

an insulation sheet arranged between the other end of the flexible printed circuit board and the reflection sheet.

2. A liquid crystal display module according to claim 1, wherein a thickness of the insulation sheet is set to a value not less than 20 μ

m and not more than 50 μ

m.

3. A liquid crystal display module according to claim 2, wherein a thickness of the insulation sheet is set to a value not less than 30 μ

m and not more than 50 μ

m.

4. A liquid crystal display module according to claim 3, wherein a thickness of the insulation sheet is set to a value not less than 35 μ

m and not more than 45 μ

m.

5. A liquid crystal display module according to claim 1, wherein the other end of the flexible printed circuit board overlaps a portion of the reflection sheet, and the insulation sheet is arranged on the reflection sheet in a state that the insulation sheet gets over the other end of the flexible printed circuit board.

6. A liquid crystal display module according to claim 5, wherein the insulation sheet is arranged on the reflection sheet in a state that the insulation sheet gets over the other end of the flexible printed circuit board by at least 10 mm or more.

7. A liquid crystal display module according to claim 1, wherein the insulation sheet is made of polyethylene terephthalate.

8. A liquid crystal display module according to claim 1, wherein a light source is arranged on the other end of the flexible printed circuit board, and the light source is configured to face one side surface of the light guide plate.

9. A liquid crystal display module according to claim 8, wherein an optical sheet is arranged between the light guide plate and the liquid crystal display panel.