Display device and television device having holding member

• US 9,234,996 B2
• Filed: 02/06/2013
• Issued: 01/12/2016
• Est. Priority Date: 02/13/2012
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ozeki, Tsuyoshi
• Primary Examiner(s): Truong, Bao Q
• Assistant Examiner(s): ZIMMERMAN, GLENN D
• Application Number:
  US14/375,841
• Publication Number:
  US 20140375900A1
• Time in Patent Office: 1,070 Days
• Field of Search: 362/97.1, 362/97.2, 362/97.3, 362/97.4, 362/611, 362/612, 362/630, 362/631, 348/794
• US Class Current: 1/1
• CPC Class Codes: G02B 6/0033 Means for improving the coupling-out of light from the light guide
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: H04N 5/655 Construction or mounting of chassis, e.g. for varying the elevation of the tube

Abstract

A liquid crystal display device includes an LED, a liquid crystal panel, a light guide plate, a chassis, a frame, a board attachment member, an LED board, and a holding member. The chassis is arranged on an opposite side of the light guide plate from the liquid crystal panel. The frame is arranged on a display surface side of the liquid crystal panel and in contact with the chassis. The frame and the chassis hold the liquid crystal panel, the LED, and the light guide plate therebetween. The board attachment member is mounted on the chassis and spaced apart from the frame. The LED board is in contact with the board attachment member and includes the LED mounted on a plate surface thereof. The holding member sandwiches the board attachment member and the LED board so as to hold the LED board to the board attachment member.

Claims

1. A display device, comprising:

a light source;

a display panel configured to provide a display using light from the light source;

a light guide plate arranged on an opposite side of the display panel from a display surface side and arranged such that an end surface of the light guide plate is opposite the light source, the light guide plate being configured to guide the light from the light source toward the display panel;

a chassis arranged on an opposite side of the light guide plate relative to the display panel;

a frame arranged on the display surface side of the display panel and in contact with the chassis, the frame holding the display panel, the light source, and the light guide plate with the chassis between the frame and the chassis;

a board attachment member attached to the chassis and spaced apart from the frame;

a light source board in contact with the board attachment member and including a plate surface on which the light source is mounted;

a holding member sandwiching the board attachment member and the light source board so as to hold the light source board to the board attachment member; and

a printed circuit board electrically connected to the display panel;

wherein

the holding member includes a first holding member and a second holding member, the first holding member holding the light source board, the second holding member holding the light source board and the printed circuit board.

2. The display device according to claim 1, the holding member is a clip.

3. The display device according to claim 1, wherein the board attachment member includes a plate-like portion that extends from a chassis side to a display panel side.

4. The display device according to claim 1, wherein the second holding member has heat conductivity that is lower than heat conductivity of the first holding member.

5. The display device according to claim 1, wherein the second holding member has an S-shaped cross section.

6. The display device according to claim 1, wherein the frame includes a cutout portion such that a portion of the frame opposite the printed circuit board is located farther from the chassis than a portion of the frame that is in contact with the display panel.

7. The display device according to claim 1,

wherein the light source includes a plurality of light sources mounted on the light source board, and

wherein the holding member is in contact with a part of the plate surface of the light source board, the part thereof being located between the light sources that are adjacent to each other.

8. The display device according to claim 1, wherein the holding member includes a portion that is in contact with the light source board, the portion including a surface opposite the light guide plate, the surface being located closer to the light source board than a light emitting surface of the light source.

9. The display device according to claim 1,

wherein the holding member includes a plurality of holding members, and

wherein the light source board is held by the plurality of the holding members.

10. The display device according to claim 1, wherein the board attachment member has a high heat dissipation property than the light source board.

11. The display device according to claim 1, wherein the display panel is a liquid crystal panel.

12. A television device comprising the display device according to claim 1.

13. The display device according to claim 4, wherein the first holding member is made of metal and the second holding member is made of plastic.