DIRECT TYPE BACKLIGHT MODULE WITH PLATFORM SUPPORT FOR OPTICAL PLATE

• US 20080089054A1
• Filed: 12/28/2006
• Published: 04/17/2008
• Est. Priority Date: 10/13/2006
• Status: Active Grant

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: CHANG, SHAO-HAN
• Granted Patent: US 7,697,087 B2
• Time in Patent Office: Days
• US Class Current: 362/97
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means

Abstract

An exemplary backlight module (100) includes a housing (10), a reflective sheet (30), a number of point light sources (20). The housing includes a bottom plate (12) and at least one platform support (14) extending out from the bottom plate towards an interior of the housing. The reflective sheet is supported by the platform support, and defines a number of through holes (301). The point light sources are arranged in the housing corresponding to the through holes of the reflective sheet. Each point light source includes a base portion (22) and a light emitting portion (24). The base portion is secured at the bottom plate of the housing, and the light emitting portion protrudes through a corresponding one of the through holes.

Claims

1. A direct type backlight module, comprising:

a housing having a bottom plate and at least one platform support extending from the bottom plate towards an interior of the housing;

a reflective sheet supported by the platform support, the reflective sheet defining a plurality of through holes; and

a plurality of point light sources arranged in the housing corresponding to the through holes of the reflective sheet, each point light source including a base portion and a light emitting portion, the base portion being secured at the bottom plate of the housing, and the light emitting portion protruding through a corresponding one of the through holes.

2. The direct type backlight module as claimed in claim 1, wherein the reflective sheet is secured with the platform support of the housing by at least one of a piece of double-sided adhesive tape, solid adhesive, and glue.

3. The direct type backlight module as claimed in claim 1, wherein the reflective sheet is secured with the platform support of the housing by a hook.

4. The direct type backlight module as claimed in claim 1, wherein the reflective sheet is oriented on and secured to the platform support of the housing by a pin.

5. The direct type backlight module as claimed in claim 1, wherein the reflective sheet is secured with the platform support of the housing by a fastener.

6. The direct type backlight module as claimed in claim 1, further comprising at least one reflective divider located on the at least one platform support, the at least one reflective divider configured for dividing the housing into at least two spaces.

7. The direct type backlight module as claimed in claim 1, further comprising an optical sheet arranged above the point light sources.

8. The direct type backlight module as claimed in claim 7, further comprising at least one optical sheet support located on the at least one platform support and supportively abutting the optical sheet.

9. The direct type backlight module as claimed in claim 1, wherein the platform support comprises a ceiling and two sidewalls, and each sidewall extends from the bottom plate.

10. The direct type backlight module as claimed in claim 9, wherein each sidewall defines at least one heat venting hole.

11. The direct type backlight module as claimed in claim 9, further comprising a dust filtering member received in a space defined by the ceiling and the two sidewalls of the platform support.