Display device and television apparatus

• US 10,520,666 B2
• Filed: 01/07/2019
• Issued: 12/31/2019
• Est. Priority Date: 10/25/2011
• Status: Active Grant

• Current Assignee: Maxell, Ltd.
• Original Assignee: Funai Electric Co., Ltd. (Funai Electric Holdings Company Limited)
• Inventors: Yokawa, Akira, Kita, Yuki, Fujikawa, Akihiro, Fukumoto, Yasuyuki, Mori, Yasuhiro, Suzuki, Yuto, Horiuchi, Hirofumi, Tsuji, Hirohiko, Yamanaka, Takahito, Yonezawa, Hideo, Kono, Akifumi
• Primary Examiner(s): Nguyen, Sang V
• Application Number:
  US16/241,129
• Publication Number:
  US 20190137684A1
• Time in Patent Office: 358 Days
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• 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: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/13332 Front frames
• CPC Class Codes: G02F 1/133328 Segmented frames
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 1/133628 with cooling means
• CPC Class Codes: H04N 5/44 Receiver circuitry for the reception of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06
• CPC Class Codes: H04N 5/655 Construction or mounting of chassis, e.g. for varying the elevation of the tube

Abstract

A display device includes a display panel, a light source, a reflection sheet, and a supporting unit. The supporting unit has a first protruding portion that contacts with a first area of a rear facing surface of the reflection sheet, a second protruding portion that contacts with a second area of the rear facing surface, a third protruding portion that contacts with a third area of the rear facing surface and a fourth protruding portion that contacts with a fourth area of the rear facing surface. The first, second, third and fourth areas are spaced apart from a center portion of the reflection sheet. The first and second areas are spaced apart from each other in a first direction. The third and fourth areas are spaced apart from each other in a second direction that is perpendicular to the first direction.

Claims

1. A display device comprising:

a display panel;

a light source;

a reflection sheet that reflects light from the light source towards the display panel; and

a supporting unit having a first protruding portion that contacts with a first area of a rear facing surface of the reflection sheet, a second protruding portion that contacts with a second area of the rear facing surface of the reflection sheet, a third protruding portion that contacts with a third area of the rear facing surface of the reflection sheet and a fourth protruding portion that contacts with a fourth area of the rear facing surface of the reflection sheet,

the first, second, third and fourth areas being spaced apart from a center portion of the reflection sheet,

the first and second areas being spaced apart from each other in a first direction that is parallel to a display surface of the display panel,

the third and fourth areas being spaced apart from each other in a second direction that is parallel to the display surface of the display panel and is perpendicular to the first direction,

the first, second, third and fourth protruding portions having outer peripheries, respectively, and

the first, second, third and fourth areas having outer peripheries that correspond to the outer peripheries of the first, second, third and fourth protruding portions, respectively.

2. The display device according to claim 1, wherein

the first and second areas are spaced apart from each other along a first center line of the display device extending in the first direction, and

the third and fourth areas are spaced apart from each other along a second center line of the display device extending in the second direction.

3. The display device according to claim 1, wherein

the first and second protruding portions are aligned with respect to each other as viewed in the first direction, and

the third and fourth protruding portions are aligned with respect to each other as viewed in the first direction.

4. The display device according to claim 1, wherein

one of the first and second protruding portions has first and second projecting parts that contacts with first and second subsections of one of the first and second areas,

the first and second subsections being spaced apart from each other in the second direction.

5. The display device according to claim 4, wherein

one of the first and second subsections of the one of the first and second areas is aligned with the other one of the first and second areas as viewed along a center line of the display device extending in the first direction.

6. The display device according to claim 1, wherein

one of the third and fourth protruding portions has first and second projecting parts that contacts with first and second subsections of one of the third and fourth areas,

the first and second subsections being spaced apart from each other in the second direction.

7. The display device according to claim 6, wherein

the first and second subsections of the one of the third and fourth areas are aligned with respect to each other as viewed along a center line of the display device extending in the second direction.

8. The display device according to claim 6, wherein

the one of the third and fourth protruding portions has at least, one recessed part that separates the first and second projecting parts in the second direction.

9. The display device according to claim 8, wherein

the at least one recessed part has two recessed parts that are spaced apart from each other in the first direction.

10. The display device according to claim 9, wherein

the two recessed parts are aligned with respect to each other as viewed in the first direction.

11. The display device according to claim 1, wherein

each of the third and fourth protruding portions has first and second projecting parts that contacts with first and second subsections of corresponding one of the third and fourth areas,

the first and second subsections being spaced apart from each other in the second direction.

12. The display device according to claim 11, wherein

the first and second subsections of the third and fourth areas are aligned with respect to each other as viewed along a center line of the display device extending in the second direction.

13. The display device according to claim 11, wherein

each of the third and fourth protruding portions has at least one recessed part that separates the first and second projecting parts of corresponding one of the third and fourth protruding portions in the second direction.

14. The display device according to claim 13, wherein

the at least one recessed part has two recessed parts that are spaced apart from each other in the first direction.

15. The display device according to claim 14, wherein

the two recessed parts of each of the third and fourth protruding portions are aligned with respect to each other as viewed in the first direction, respectively.

16. The display device according to claim 13, wherein

the at least one recessed part of the third protruding portion and the at least one recessed part of the fourth protruding portion are aligned with respect to each other along a center line of the display device extending in the second direction.

17. The display device according to claim 1, wherein

the display panel has a rectangular shape that is longer in the second direction than in the first direction.

18. The display device, according to claim 1, further comprising

a display panel driving board arranged along the second direction.

19. The display device according to claim 1, wherein

the light source includes a plurality of light sources that is arranged along the first direction.

20. The display device according to claim 1, wherein

at least one of the first, second, third and fourth areas is located at a non-overlapping location that does not overlap with a circuit hoard of the display device as viewed in a perpendicular direction of the display surface of the display panel.