Flat Panel Display Device, Stereoscopic Display Device, Plasma Display Device

• US 20130127740A1
• Filed: 11/23/2011
• Published: 05/23/2013
• Est. Priority Date: 11/18/2011
• 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: Kuo, Yi-Cheng, Hsiao, Yu-Chun, Cheng, Jia-He
• Granted Patent: US 9,036,107 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side

Abstract

The present invention provides a flat panel display device, which includes a backlight system and a display panel, the backlight system including a light source, a light homogenization mechanism, and a back frame; the back frame carries the light source and the light homogenization mechanism, the light homogenization mechanism guiding light from the light source to a light incidence surface of the display panel; the back frame includes primary assembling pieces and secondary assembling pieces; the primary assembling pieces are of a number of at least two, the at least two primary assembling pieces being joined to form a main frame structure of the back frame; the secondary assembling pieces are arranged inside the back frame and joined to the back frame; some of the primary assembling pieces and the secondary assembling pieces are of first density and first strength and others are of second density and second strength; the first density is greater than the second density and the first strength is greater than the second strength. The present invention also provides a stereoscopic display device and a plasma display device. The back frame mold of the present invention is of a simple structure and can reduce the expenditure of the back frame mold, and can also save the material used for back frame so as to lower down the cost of flat panel display device.

Claims

1. A flat panel display device, wherein the flat panel display device comprises a backlight system and a display panel, wherein:

the backlight system comprises a light source, a light homogenization mechanism, and a back frame;

the back frame carries the light source and the light homogenization mechanism, the light homogenization mechanism guiding light from the light source to a light incidence surface of the display panel;

the back frame comprises primary assembling pieces and secondary assembling pieces;

the primary assembling pieces are of a number of at least two, the at least two primary assembling pieces being joined to form a main frame structure of the back frame;

the secondary assembling pieces are arranged inside the back frame and joined to the back frame;

some of the primary assembling pieces and the secondary assembling pieces are of first density and first strength and others are of second density and second strength; and

the first density is greater than the second density and the first strength is greater than the second strength.

2. The flat panel display device as claimed in claim 1, wherein:

the primary assembling pieces are galvanized steel pieces having the first density and the first strength and the secondary assembling pieces are plastic pieces having the second density and the second strength.

3. The flat panel display device as claimed in claim 1, wherein:

the primary assembling pieces are plastic pieces having the second density and the second strength and the secondary assembling pieces are galvanized steel pieces having the first density and the first strength.

4. The flat panel display device as claimed in claim 1, wherein:

some of the primary assembling pieces and the secondary assembling pieces are of a third density and a third strength, the third density being between the first density and the second density, the third strength being between the first strength and the second strength.

5. The flat panel display device as claimed in claim 4, wherein:

some of the primary assembling pieces and the secondary assembling pieces are galvanized steel pieces having the first density and the first strength, some are plastic pieces having the second density and the second strength, and others are aluminum pieces of the third density and the third strength.

6. The flat panel display device as claimed in claim 1, wherein:

the at least two primary assembling pieces comprise first and second primary assembling pieces that are joined to each other, in which the first primary assembling piece has an end having a surface forming at least two joint sections that are arranged to space from each other in a lengthwise direction of the first primary assembling piece, the first primary assembling piece using one of the joint sections to join a corresponding end of the second primary assembling piece in order to form the main frame structure of the back frame that is of various sizes.

7. The flat panel display device as claimed in claim 6, wherein:

the joint sections comprise recesses formed in a surface of the first primary assembling piece and having a shape corresponding to the end of the second primary assembling piece for receiving the end of the second primary assembling piece.

8. The flat panel display device as claimed in claim 7, wherein:

the recess of the first primary assembling piece forms in a bottom thereof a first through hole, the second primary assembling piece forming in a corresponding location a second through hole, the back frame comprising a fastener, the fastener extending through the first through hole and the second through hole to join the first primary assembling piece and the second primary assembling piece to each other.

9. The flat panel display device as claimed in claim 6, wherein:

the joint sections comprise recesses formed in a surface of the first primary assembling piece, the second primary assembling piece having an end having a surface forming at least two protrusions that are arranged to space from each other in a lengthwise direction of the second primary assembling piece, the protrusions being receivable in the recesses to join the first primary assembling piece and the second primary assembling piece to each other.

10. The flat panel display device as claimed in claim 6, wherein:

the back frame comprises a third primary assembling piece and a fourth primary assembling piece; and

the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, and the fourth primary assembling piece are straight linear and are joined to each other in a leading end-to-tailing end manner to form a rectangular main frame structure enclosing the back frame.

11. The flat panel display device as claimed in claim 10, wherein:

the secondary assembling pieces comprise a first secondary assembling piece and a second secondary assembling piece, the first secondary assembling piece having two ends respectively joined to at least two primary assembling pieces of the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, and the fourth primary assembling piece, the second secondary assembling piece having two ends respectively joined to at least two primary assembling pieces of the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, and the fourth primary assembling piece.

12. The flat panel display device as claimed in claim 11, wherein:

the two ends of the first secondary assembling piece are respectively joined to the first primary assembling piece and the second primary assembling piece that are adjacent to each other and the two ends of the second secondary assembling piece are respectively joined to the third primary assembling piece and the fourth primary assembling piece that are adjacent to each other;

or

the two ends of the first secondary assembling piece are respectively joined to the first primary assembling piece and the third primary assembling piece that are opposite to each other and the two ends of the second secondary assembling piece are respectively joined to the first primary assembling piece and the third primary assembling piece that are opposite to each other, the second primary assembling piece, the fourth primary assembling piece, the first secondary assembling piece, and the second secondary assembling piece being arranged parallel to each other.

13. The flat panel display device as claimed in claim 11, wherein:

the back frame comprises at least one bracing piece, which is releasably fixed to one or more of the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, the fourth primary assembling piece, the first secondary assembling piece, and the second secondary assembling piece, the bracing piece forming a bump.

14. The flat panel display device as claimed in claim 1, wherein:

the flat panel display device comprises a touch screen, the touch screen being arranged on a light exit surface of the display panel.

15. A stereoscopic display device, wherein:

the stereoscopic display device comprises a liquid crystal lens grating, a backlight system, and a display panel, the liquid crystal lens grating being arranged on a light exit surface of the display panel;

the backlight system comprises a light source, a light homogenization mechanism, and a back frame;

the back frame carries the light source and the light homogenization mechanism, the light homogenization mechanism guiding light from the light source to a light incidence surface of the display panel;

the back frame comprises primary assembling pieces and secondary assembling pieces;

the primary assembling pieces are of a number of at least two, the at least two primary assembling pieces being joined to form a main frame structure of the back frame;

the secondary assembling pieces are arranged inside the back frame and joined to the back frame;

some of the primary assembling pieces and the secondary assembling pieces are of first density and first strength and others are of second density and second strength; and

the first density is greater than the second density and the first strength is greater than the second strength.

16. A plasma display device, wherein:

the plasma display device comprises a plasma display panel and a back frame, the back frame being arranged at a back side of the plasma display panel;

the back frame comprises primary assembling pieces and secondary assembling pieces;

the primary assembling pieces are of a number of at least two, the at least two primary assembling pieces being joined to form a main frame structure of the back frame;

the secondary assembling pieces are arranged inside the back frame and joined to the back frame;

some of the primary assembling pieces and the secondary assembling pieces are of first density and first strength and others are of second density and second strength; and

the first density is greater than the second density and the first strength is greater than the second strength.