Light-emitting device for liquid crystal display apparatus and liquid crystal display apparatus

• US 8,854,570 B2
• Filed: 08/12/2011
• Issued: 10/07/2014
• Est. Priority Date: 07/11/2011
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Yu, Gang
• Primary Examiner(s): KIANNI, KAVEH C
• Application Number:
  US13/318,780
• Publication Number:
  US 20130016302A1
• Time in Patent Office: 1,152 Days
• Field of Search: 349/58, 349/62
• US Class Current: 349/58
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G02B 6/0075 Arrangements of multiple light guides G02B6/0028 takes precedence
• CPC Class Codes: G02B 6/0085 Means for removing heat created by the light source from the package heat extraction or cooling elements for semiconductor light sources in general H01L33/64
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 1/133628 with cooling means

Abstract

The present invention discloses a light-emitting device of a liquid crystal display apparatus, which includes a light bar and a frame. The frame has a surface having a fixing bar protruded therefrom. An extension direction of the fixing bar is parallel with the surface of the frame. A longer side of a main body of the light bar is attached to the fixing bar. Two ends of the fixing bar respectively have a heat-conductive portion mounted thereon. An inner surface of the heat-conductive portion is perpendicular to a length direction of the main body of the light bar and attached to a shorter side of the main body of the light bar. The present invention further discloses a liquid crystal display apparatus.

Claims

1. A light-emitting device of a liquid crystal display apparatus, comprising a light bar and a frame, wherein a fixing bar is protruded from a surface of a main body of the frame, and an extension direction of the fixing bar is parallel with the surface of the main body of the frame;

a longer side of a main body of the light bar is attached to the fixing bar, and a length direction of the light bar is parallel with the extension direction of the fixing bar;

the light bar has a plurality of light-emitting diodes, and the light-emitting diodes are arranged averagely on the main body of the light bar;

each of two ends of the fixing bar has a heat-conductive portion mounted thereon, and an inner surface of the heat-conductive portion is perpendicular to the length direction of the main body of the light bar and attached to a shorter side of the main body of the light bar;

the heat-conductive portion is integrally and transversely protruded from each of the two ends of the fixing bar.

2. The light-emitting device of the liquid crystal display apparatus as claimed in claim 1, characterized in that:

the device further comprises a backboard, and the frame is mounted on the backboard.

3. A light-emitting device of a liquid crystal display apparatus, comprising a light bar and a frame, wherein a fixing bar is protruded from a surface of a main body of the frame, and an extension direction of the fixing bar is parallel with the surface of the main body of the frame;

a longer side of a main body of the light bar is attached to the fixing bar, and a length direction of the light bar is parallel with the extension direction of the fixing bar, characterized in that;

each of two ends of the fixing bar has a heat-conductive portion mounted thereon, and an inner surface of the heat-conductive portion is perpendicular to the length direction of the main body of the light bar and attached to a shorter side of the main body of the light bar, wherein the heat-conductive portion is integrally and transversely protruded from each of the two ends of the fixing bar.

4. The light-emitting device of the liquid crystal display apparatus as claimed in claim 3, characterized in that:

the device further comprises a backboard, and the frame is mounted on the backboard.

5. The light-emitting device of the liquid crystal display apparatus as claimed in claim 3, characterized in that:

the light bar has a plurality of light-emitting diodes, and the light-emitting diodes are arranged averagely on the main body of the light bar.

6. The light-emitting device of the liquid crystal display apparatus as claimed in claim 3, characterized in that:

the heat-conductive portion is an independent heat-conductive sheet, and the heat-conductive sheet is attached to the shorter side of the main body of the light bar and the frame by adhesion.

7. A liquid crystal display apparatus, comprising a liquid crystal panel and a light-emitting device, and the light-emitting device is mounted at a side of the liquid crystal panel and includes a light bar and a frame, wherein a fixing bar is protruded from a surface of a main body of the frame, and an extension direction of the fixing bar is parallel with the surface of the main body of the frame;

a longer side of a main body of the light bar is attached to the fixing bar, and a length direction of the light bar is parallel with the extension direction of the fixing bar, characterized in that;

each of two ends of the fixing bar has a heat-conductive portion mounted thereon, and an inner surface of the heat-conductive portion is perpendicular to the length direction of the main body of the light bar and attached to a shorter side of the main body of the light bar, wherein the heat-conductive portion is integrally and transversely protruded from each of the two ends of the fixing bar.

8. The liquid crystal display apparatus as claimed in claim 7, characterized in that:

the light-emitting device further comprises a backboard, and the frame is mounted on the backboard.

9. The liquid crystal display apparatus as claimed in claim 7, characterized in that:

the light bar has a plurality of light-emitting diodes, and the light-emitting diodes are arranged averagely on the main body of the light bar.

10. The liquid crystal display apparatus as claimed in claim 7, characterized in that:

the heat-conductive portion is an independent heat-conductive sheet, and the heat-conductive sheet is attached to the shorter side of the main body of the light bar and the frame by adhesion.