Display device and television apparatus

• US 9,621,838 B2
• Filed: 10/05/2012
• Issued: 04/11/2017
• 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): Kim, Dennis Y
• Application Number:
  US13/646,445
• Publication Number:
  US 20130100357A1
• Time in Patent Office: 1,649 Days
• Field of Search: 349 58
• 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 light source, a reflection sheet, a display panel and a display panel supporting member. The display panel supporting member is disposed on a back side of the display device relative to the reflection sheet. A part of a back surface of the display panel supporting member disposed on the back side of the display device relative to the reflection sheet forms a rear chassis. The display panel supporting member has a first recessed portion that is recessed toward the reflection sheet such that the first recessed portion presses an inner area of a back surface of the reflection sheet except for a vicinity of an outer peripheral portion of the back surface of the reflection sheet.

Claims

1. A display device comprising:

a light source;

a reflection sheet that reflects light from the light source toward a front of the display device;

a display panel;

a supporting member supporting the display panel; and

a cover member only partially covering a rear facing surface of the supporting member from a rear of the display device, with a part of the rear facing surface of the supporting member other than a covered part of the rear facing surface that is covered by the cover member from the rear of the display device exposing outside of the display device,

the supporting member having a first recessed portion that is recessed toward the reflection sheet and contacts with a center portion of a back surface of the reflection sheet that is spaced inwardly from an outer edge of the reflection sheet, the first recessed portion being disposed in an area that is covered by the cover member with the cover member substantially covering the first recessed portion.

2. The display device according to claim 1, wherein

an outer edge portion of a front facing surface of the first recessed portion that contacts with the back surface of the reflection sheet has a curved cross-sectional shape.

3. The display device according to claim 2, further comprising

a heat sink disposed on a front side of the supporting member and outside the first recessed portion,

the heat sink contacting with a vicinity of an outer peripheral portion of the back surface of the reflection sheet.

4. The display device according to claim 3, wherein

the supporting member further has a second recessed portion that is recessed in a same direction as the first recessed portion.

5. The display device according to claim 4, wherein

the second recessed portion surrounds the first recessed portion, and

the cover member is fitted into the second recessed portion of the supporting member and covers the first recessed portion of the supporting member.

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

a circuit board disposed at a location that overlaps with the first recessed portion as viewed in a planar direction between the supporting member and the cover member.

7. A display device comprising:

a light source;

a reflection sheet that reflects the light from the light source;

a display panel;

a supporting member supporting the display panel, the supporting member being disposed on an opposite side of a display screen side of the display panel; and

a cover member partially covering a back surface of the supporting member,

the supporting member having a first recessed portion that is recessed toward the reflection sheet and contacts with a center portion of a back surface of the reflection sheet that is spaced inwardly from an outer edge of the reflection sheet, and a second recessed portion in which the first recessed portion is disposed, and

the cover member being fitted into the second recessed portion of the supporting member and covering the first recessed portion of the supporting member.

8. The display device according to claim 7, wherein

the cover member only partially covers the back surface of the supporting member.

9. A display device comprising:

a light source;

a reflection sheet that reflects the light from the light source;

a display panel;

a supporting member supporting the display panel; and

a cover member only partially covering the supporting member from a rear of the display device,

the supporting member having a first recessed portion that is recessed toward the reflection sheet and contacts with a center portion of a back surface of the reflection sheet that is spaced inwardly from an outer edge of the reflection sheet,

the cover member covering a covered part of the supporting member so that the cover member substantially covers the first recessed portion of the supporting member, a part of the supporting member other than the covered part exposing outside of the display device at the rear of the display device to form a rear chassis of the display device.

10. The display device according to claim 9, wherein

the center portion of the back surface of the reflection sheet that contacts with the first recessed portion has a length in a lengthwise direction that is equal to or greater than a half of an entire length of the supporting member in the lengthwise direction.

11. The display device according to claim 9, further comprising

a light guide plate that diffuses the light from the light source, the light guide plate being disposed on a front side of the reflection sheet,

a front facing surface of the first recessed portion of the supporting member is arranged to contact the reflection sheet with the light guide plate.

12. The display device according to claim 9, wherein

the supporting member is made of a plate member, and has a contact portion that contacts with the reflection sheet and a bulging portion that bulges relative to the contact portion, a boundary portion between the contact portion and the bulging portion having a radius of curvature that is larger than a thickness of the plate member.

13. The display device according to claim 12, wherein

the radius of curvature of the boundary portion is three times or more and six times or less than the thickness of the plate member.

14. The display device according to claim 13, wherein

the supporting member includes a heat sink that releases heat generated from the light source.

15. The display device according to claim 9, wherein

the center portion of the back surface of the reflection sheet that contacts with the first recessed portion has a length in a widthwise direction that is equal to or greater than a half of an entire length of the supporting member in the widthwise direction.