Liquid crystal display device, light source holder, light source-housing member, and backlight

• US 7,775,702 B2
• Filed: 08/23/2006
• Issued: 08/17/2010
• Est. Priority Date: 02/13/2006
• 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: Kuroiwa, Hironori
• Primary Examiner(s): TSO, LAURA K
• Application Number:
  US12/091,080
• Publication Number:
  US 20090122520A1
• Time in Patent Office: 1,455 Days
• Field of Search: 362 971- 973, 362/217.11, 362/217.12, 362/219, 362632-634
• US Class Current: 362/634
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence
• CPC Class Codes: G02F 1/133604 with lamps
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means

Abstract

A liquid crystal display device, a light source holder, a light source housing member, and a backlight, permit light sources to be easily exchanged and effectively prevent generation of defects such as deformation of light source holding members and an inability of the members to be inserted and pulled out. The backlight includes a light source holder and a light source housing member, the light source housing member housing the light source holder, wherein at least one of the light source holder and the light source housing member has a projection portion, and the light source holder and the light source housing member are in contact with each other at the projection portion.

Claims

1. A liquid crystal display device comprising:

a backlight including a light source holder and a light source housing member housing the light source holder;

wherein

at least one of the light source holder and the light source housing member has a projection portion;

the light source holder and the light source housing member are in contact with each other at the projection portion; and

the light source holder is arranged to slide against the light source housing member at the projection portion when the light source holder is inserted or removed from the light source housing member.

2. The liquid crystal display device according to claim 1, wherein the projection portion is arranged to reduce friction between the light source holder and the light source housing member.

3. The liquid crystal display device according to claim 1, wherein the backlight further includes a light guide plate behind a liquid crystal display panel,

a light source is arranged on a side of the light guide plate, and the light source holder is arranged in a peripheral region of the light source other than a region between the light guide plate and the light source.

4. The liquid crystal display device according to claim 3,

wherein at least one of the light source holder and the light source housing member has the projection portion disposed on a front surface side or a back surface side.

5. The liquid crystal display device according to claim 3,

wherein at least one of the light source holder and the light source housing member has the projection portion disposed on the front surface side.

6. The liquid crystal display device according to claim 1,

wherein the backlight is a direct-type backlight.

17. The liquid crystal display device according to claim 3, wherein:

the projection portion is arranged on a front surface side of the light source holder; and

no projection portion is arranged on a back surface side of the light source holder.

18. The liquid crystal display device according to claim 1,

wherein the projection portion does not come into contact with any lamp.

19. The liquid crystal display device according to claim 2,

wherein the friction that is reduced is caused by relative movement between the light source holder and the light source member.

7. A liquid crystal display device comprising:

a backlight including a light source holder and a light source housing member housing the light source holder;

wherein

at least one of the light source holder and the light source housing member has a curved portion;

the light source holder and the light source housing member are in contact with each other at the curved portion; and

the light source holder is arranged to slide against the light source housing member at the curved portion when the light source holder is inserted or removed from the light source housing member.

8. A backlight comprising:

a light source holder; and

a light source housing member housing the light source holder;

wherein

at least one of the light source holder and the light source housing member has a projection portion;

the light source holder and the light source housing member are in contact with each other at the projection portion; and

the light source holder is arranged to slide against the light source housing member at the projection portion when the light source holder is inserted or removed from the light source housing member.

9. A backlight comprising:

a light source holder; and

a light source housing member housing the light source holder;

wherein

at least one of the light source holder and the light source housing member has a curved portion;

the light source holder and the light source housing member are in contact with each other at the curved portion; and

the light source holder is arranged to slide against the light source housing member at the curved portion when the light source holder is inserted or removed from the light source housing member.

10. A liquid crystal display device comprising:

a backlight including a light source holder, a sliding member, and a light source housing member housing the light source holder and the sliding member;

wherein

at least one of the sliding member and the light source housing member has a projection portion;

the sliding member and the light source housing member are in contact with each other at the projection portion; and

the backlight is a direct-type backlight.

11. The liquid crystal display device according to claim 10,

wherein the projection portion is arranged to reduce friction between the sliding member and the light source housing member.

12. The liquid crystal display device according to claim 10,

wherein the sliding member is arranged on both ends of the liquid source holder and has the projection portion on a back surface side.

13. A liquid crystal display device comprising:

a backlight including a light source holder, a sliding member, and a light source housing member housing the light source holder and the sliding member;

wherein

at least one of the sliding member and the light source housing member has a projection portion;

the sliding member and the light source housing member are in contact with each other at the projection portion;

the backlight includes a light source behind a liquid crystal display panel, the light source holder is arranged in a peripheral region of the light source other than a region between the liquid crystal display panel and the light source, and the sliding member is arranged on both ends of the liquid source holder and has the projection portion on a back surface side; and

the backlight includes a plurality of light source holders juxtaposed to each other, and at least one of the plurality of light source holders holds a plurality of light sources.

14. A liquid crystal display device comprising:

a backlight including a light source holder, a sliding member, and a light source housing member housing the light source holder and the sliding member;

wherein

at least one of the sliding member and the light source housing member has a curved portion; and

the sliding member and the light source housing member are in contact with each other at the curved portion.

15. A backlight comprising:

a light source holder;

a sliding member; and

a light source housing member housing the light source holder and the sliding member;

wherein

at least one of the sliding member and the light source housing member has a projection portion;

the sliding member and the light source housing member are in contact with each other at the projection portion; and

the backlight is a direct-type backlight.

16. A backlight comprising:

a light source holder;

a sliding member; and

a light source housing member housing the light source holder and the sliding member;

wherein

at least one of the sliding member and the light source housing member has a curved portion; and

the sliding member and the light source housing member are in contact with each other at the curved portion.