Liquid crystal display

• US 7,894,016 B2
• Filed: 11/02/2006
• Issued: 02/22/2011
• Est. Priority Date: 04/10/2006
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Hamada, Tetsuya
• Primary Examiner(s): Pak; Sung H
• Application Number:
  US12/282,917
• Publication Number:
  US 20090128732A1
• Time in Patent Office: 1,573 Days
• Field of Search: 349/58
• US Class Current: 349/58
• CPC Class Codes: G02B 6/005 provided by one optical element, or plurality thereof, placed on the light output side of the light guide
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side

Abstract

In a liquid crystal display, an opening is formed in a lateral surface of a bezel of an LCD unit, and the opening serves as an LED module insert slot. An LED of an LED module is arranged on a substrate so as to emit light toward a light guide plate provided on the backside of a liquid crystal panel. The LED module is inserted into the LED module insert slot and fixed to a back plate arranged on the backside of the LED unit by using a fixing member such as a screw.

Claims

1. A liquid crystal display, comprising:

a liquid crystal panel;

a frame that surrounds the liquid crystal panel;

a light guide plate that is disposed behind the liquid crystal panel and irradiates the liquid crystal panel with light;

an LED that emits light toward a lateral surface of the light guide plate;

a first substrate having the LED; and

a rear plate that covers a rear surface of the frame and a rear surface of the liquid crystal panel, and to which the first substrate is fixed with a fixing member;

wherein

the frame has an opening which the first substrate having the LED can be inserted into and removed from; and

the first substrate is fixed with a fixing member inserted from outside the rear plate.

2. The liquid crystal display of claim 1, wherein the fixing member is provided at least one near each of two opposite ends of the first substrate in a direction in which the first substrate is inserted into and removed from the opening and at least one near a center between the two opposing ends of the first substrate in the direction in which the first substrate is inserted into and removed from the opening.

3. The liquid crystal display of claim 1, further comprising a second substrate that has a driver arranged to drive the liquid crystal panel and that is located opposite from the LED with the rear plate placed therebetween, wherein the first substrate is arranged to extend along the light guide plate to a position where the first substrate does not face the second substrate, and the first substrate is fixed to the rear plate with a fixing member inserted from outside the rear plate at a position on the rear plate where the first substrate does not face the second substrate.

4. The liquid crystal display of claim 1, wherein a reflective member is provided at a portion inside the frame that faces the LED.

5. The liquid crystal display of claim 1, wherein at least the first substrate and the rear plate are formed of material having thermal conductivity of about 80 W/m·

K or greater.

6. The liquid crystal display of claim 1, wherein a thermally conductive member is provided between the first substrate and the rear plate.

7. The liquid crystal display of claim 1, wherein a member having a higher heat release rate than the first substrate is provided on at least one of a surface of the first substrate that faces the rear plate and a surface of the rear plate that faces the first substrate.

8. The liquid crystal display of claim 1, wherein the LED is a side-view LED that emits light in a direction parallel or substantially parallel to a surface on which the LED is provided.

9. The liquid crystal display of claim 1, wherein the first substrate is substantially L-shaped in section and has a surface that is parallel or substantially parallel to the lateral surface of the light guide plate, and the LED is a top-view LED that emits light in a direction perpendicular or substantially perpendicular to a surface on which the LED is provided, and the LED is provided on the surface of the first substrate that is parallel or substantially parallel to the lateral surface of the light guide plate.