ILLUMINATION DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER

• US 20120063122A1
• Filed: 02/17/2010
• Published: 03/15/2012
• Est. Priority Date: 06/15/2009
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Yokota, Masashi, Yamamoto, Kaori
• Application Number:
  US13/322,199
• Publication Number:
  US 20120063122A1
• Time in Patent Office: Days
• US Class Current: 362/97.2
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 1/133611 including means for improving the brightness uniformity
• CPC Class Codes: G02F 1/133613 characterized by the sequence of light sources

Abstract

The backlight unit (49) of a display device (69) having a liquid crystal display panel (59) is provided with a chassis (41), a diffusion plate (43) supported by the chassis, and a light source which irradiates the diffusion plate with light. The light source has a plurality of light-emitting modules (MJ) which include an LED (22) serving as a light-emitting element and a diffusion lens (24) that covers the LED. The light-emitting modules are arranged in a grid pattern on the chassis supporting the diffusion plate. Support pins (26) for supporting the diffusion plate are disposed at points on the chassis. The support pins are arranged on line segments connecting adjacent pairs of light-emitting modules.

Claims

1. An illumination device, comprising:

a chassis;

a diffusion plate supported on the chassis;

a light source irradiating the diffusion plate with light, the light source being formed by disposing a plurality of light emitting modules each including a light emitting element in a grid pattern on the chassis; and

support pins being dotted on the chassis for supporting the diffusion plate on the chassis, each of the support pins being disposed on a line segment connecting a pair of adjacent ones among the light emitting modules.

2. The illumination device according to claim 1, wherein

each of the light emitting modules includes a diffusion lens that covers the light emitting element.

3. The illumination device according to claim 1, wherein

the support pin is disposed at a position at an equal distance from each of a pair of adjacent ones among the light emitting modules on both sides of the support pin.

4. The illumination device according to claim 1, wherein

the support pins are supported on a mounting substrate on which the light emitting element is supported.

5. The illumination device according to claim 1, wherein

the support pin has a high light reflectance at least at a part of a surface thereof irradiated with irradiation light from the light emitting modules.

6. The illumination device according to claim 5, wherein

the support pin is molded from a resin material into which a high light-reflectance substance is mixed.

7. The illumination device according to claim 1, wherein

the light emitting element is an LED.

8. A display device, comprising:

the illumination device according to claim 1; and

a display panel that receives light from the illumination device.

9. The display device according to claim 8, wherein

the display panel is a liquid crystal display panel.

10. A television receiver comprising the display device according to claim 8.