Illuminating device and liquid crystal display comprising same

• US 8,287,149 B2
• Filed: 11/02/2006
• Issued: 10/16/2012
• Est. Priority Date: 04/19/2006
• 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): Neils, Peggy A.
• Application Number:
  US12/293,096
• Publication Number:
  US 20090067158A1
• Time in Patent Office: 2,175 Days
• Field of Search: 362/612, 362/613, 362/231, 362/630, 362/631, 362/632, 362/249.02, 362/97.3, 362/276, 362/373, 362/294
• US Class Current: 362/249.02
• CPC Class Codes: G02F 1/133601 for spatial active dimming
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133605 including specially adapted reflectors
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: H05B 45/30 Driver circuits

Abstract

In a direct backlight, a substrate on which LEDs are provided includes a plurality of module substrates. Each module substrate can be reduced in warping or deformation after a blanking process. In addition, each module substrate can be formed thin since bending due to its own weight is small. Consequently, the substrate as a whole and the backlight can be formed thin.

Claims

1. An illuminating device, comprising:

a substrate;

a plurality of LEDs mounted on the substrate; and

a control unit arranged to control driving of the LEDs;

wherein

the substrate includes a plurality of module substrates;

the module substrates are provided with cut portions arranged to connect connectors to the module substrates, the connectors connecting the LEDs to the control unit; and

the cut portions are through holes.

2. The illuminating device of claim 1, wherein the plurality of module substrates are arranged in a plurality of lines and columns.

5. A liquid crystal display, comprising:

a liquid crystal panel; and

the illuminating device of claim 1 that is disposed behind the liquid crystal panel.

3. An illuminating device, comprising:

a substrate;

a plurality of LEDs mounted on the substrate;

a control unit arranged to control driving of the LEDs; and

a housing arranged to fix the substrate;

wherein

the substrate includes a plurality of module substrates;

the LEDs mounted on the substrate are fitted into holes formed in a bottom of the housing;

an inclined surface that is disposed around each of the holes is provided in a surface of a bottom of the housing that is opposite to a surface of the bottom of the housing that faces the substrate; and

a thermal conductive member made of rubber is provided on a surface of the substrate that is opposite to a surface of the substrate that faces the bottom of the housing.

4. The illuminating device of claim 3, wherein a reflective material is provided on the surface of the bottom of the housing that is opposite to the surface thereof that faces the substrate.

6. The illuminating device of claim 3, wherein the plurality of module substrates are arranged in a plurality of lines and columns.

7. The illuminating device of claim 3, wherein a cut portion is formed in each of the module substrates for connecting a connector thereto, the connector connecting the LEDs to the control unit.

8. A liquid crystal display, comprising:

a liquid crystal panel; and

the illuminating device of claim 3 that is disposed behind the liquid crystal panel.