DISPLAY DEVICE AND TELEVISION APPARATUS

• US 20130100357A1
• Filed: 10/05/2012
• Published: 04/25/2013
• Est. Priority Date: 10/25/2011
• Status: Active Grant

• Current Assignee: Maxell, Ltd.
• Original Assignee: Funai Electric Co., Ltd.
• Inventors: YOKAWA, Akira, KITA, Yuki, FUJIKAWA, Akihiro, FUKUMOTO, Yasuyuki, SUZUKI, Yuto, TSUJI, Hirohiko, YAMANAKA, Takahito, YONEZAWA, Hideo, MORI, Yasuhiro, KONO, Akifumi, HORIUCHI, Hirofumi
• Granted Patent: US 9,621,838 B2
• Time in Patent Office: Days
• US Class Current: 348/725
• 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 configured to emit light;

a reflection sheet configured to reflect the light emitted from the light source to a front side of the display device;

a display panel arranged relative to the reflection sheet; and

a display panel supporting member supporting the display panel, the display panel supporting member being disposed on a back side of the display device relative to the reflection sheet with the back side of the display device being an opposite side to the front side of the display device, 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 forming a rear chassis,

the display panel supporting member having 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.

2. The display device according to claim 1, wherein

the first recessed portion of the display panel supporting member has a front surface that is arranged to press the inner area of the back surface of the reflection sheet except for the vicinity of the outer peripheral portion of the back surface of the reflection sheet in a state of surface-contacting with the inner area of the back surface of the reflection sheet except for the vicinity of the outer peripheral portion of the back surface of the reflection sheet.

3. The display device according to claim 2, wherein

the front surface of the first recessed portion of the display panel supporting member is configured such that an outer edge portion of a contact area of the front surface of the first recessed portion that surface-contacts with the back surface of the reflection sheet has a curved cross-sectional shape.

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

a heat sink disposed on the front side of the display device relative to the display panel supporting member and outside the first recessed portion,

the heat sink pressing the vicinity of the outer peripheral portion of the back surface of the reflection sheet while first recessed portion of the display panel supporting member pressing the inner area of the back surface of the reflection sheet except for the vicinity of the outer peripheral portion of the back surface of the reflection sheet.

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

a cover member arranged to cover an area of the back surface of the display panel supporting member other than the part of the back surface of the display panel supporting member forming the rear chassis,

the display panel supporting member further having a second recessed portion that surrounds the first recessed portion,

the cover member being fitted into the second recessed portion of the display panel supporting member such that the cover member covers the first recessed portion of the display panel supporting member.

6. The display device according to claim 5, wherein

the second recessed portion of the display panel supporting member has a depth that is larger than that of the first recessed portion of the display panel supporting member.

7. The display device according to claim 5, wherein

the display panel supporting member is made of sheet metal, the first and second recessed portions of the display panel supporting member being formed by drawing processing.

8. The display device according to claim 1, wherein

the inner area of the back surface of the reflection sheet that is pressed by the first recessed portion of the display panel supporting member has a length in a first direction of the display device that is equal to or greater than a half of an entire length of the display panel supporting member in the first direction of the display device.

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

a light guide plate configured to diffuse the light emitted from the light source, the light guide plate being disposed on the front side of the display device relative to the reflection sheet,

the first recessed portion of the display panel supporting member pressing the reflection sheet against the light guide plate.

10. A television apparatus comprising:

a receiver configured to receive a television broadcast;

a light source configured to emit light;

a reflection sheet configured to reflect the light emitted from the light source to a front side of the television apparatus;

a display panel arranged relative to the reflection sheet; and

a display panel supporting member supporting the display panel, the display panel supporting member being disposed on a back side of the television apparatus relative to the reflection sheet with the back side of the television apparatus being an opposite side to the front side of the television apparatus, a part of a back surface of the display panel supporting member disposed on the back side of the television apparatus relative to the reflection sheet forming a rear chassis,

the display panel supporting member having 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.

11. A display device comprising:

a light source configured to emit light,

a reflection sheet configured to reflect the light emitted from the light source to a. front side of the display device;

a display panel arranged relative to the reflection sheet; and

a reflection sheet holding member supporting the reflection sheet by contacting with an area of the reflection sheet that corresponds to a vicinity of an outer peripheral portion of a display area of the display panel from a back side of the display device, the reflection sheet holding member being made of a plate-shaped metal member, the reflection sheet holding member having a contact portion that contacts with the reflection sheet and a drawn portion that is drawn relative to the contact portion by drawing processing to the plate-shaped metal member, the contact portion and the drawing portion defining a boundary portion therebetween, the boundary portion having a radius of curvature that is larger than a thickness of the plate-shaped metal member.

12. The display device according to claim 11, wherein

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

13. The display device according to claim 11, wherein

the reflection sheet holding member includes a heat sink that is configured to release heat generated from the light source.

14. The display device according to claim 11, wherein

the reflection sheet holding member is arranged to contact with the reflection sheet at a frame-shaped area of the reflection sheet outward of the outer peripheral portion of the display area.

15. The display device according to claim 14, wherein

the reflection sheet holding member includes a plurality of reflection sheet holding portions, the reflection sheet holding portions are arranged in a frame shape along four sides of the display area such that the reflection sheet holding portions presses four sides of the reflection sheet, respectively.

16. The display device according to claim 11, wherein

at least a part of an inner edge portion of the reflection sheet holding member is spaced apart from the reflection sheet without contacting with the reflection sheet.

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

a supporting member disposed on the back side of the display device relative to the reflection sheet holding member, with a part of the supporting member forming a rear chassis, the supporting member being spaced away from an area of the reflection sheet that corresponds to the display area by a predetermined distance such that the supporting member does not contacts with the area of the reflection sheet that corresponds to the display area.

18. The display device according to claim 17, wherein

the supporting member is spaced away from the area of the reflection sheet that corresponds to the display area by a distance of 1 mm or more.

19. A television apparatus comprising:

a receiver configured to receive a television broadcast;

a display panel configured to display the television broadcast received by the receiver;

a light source configured to emit light;

a reflection sheet configured to reflect the light emitted from the light source to a front side of the television apparatus; and

a reflection sheet holding member supporting the reflection sheet by contacting with an area of the reflection sheet that corresponds to a vicinity of an outer peripheral portion of a display area of the display panel, the reflection sheet holding member being made of a plate-shaped metal member, the reflection sheet holding member having a contact portion that contacts with the reflection sheet and a drawn portion that is drawn relative to the contact portion by drawing processing to the plate-shaped metal member, the contact portion and the drawing portion defining a boundary portion therebetween, the boundary portion having a radius of curvature that is larger than a thickness of the plate-shaped metal member.