Liquid crystal display apparatus

• US 20060284808A1
• Filed: 06/14/2006
• Published: 12/21/2006
• Est. Priority Date: 06/20/2005
• Status: Active Grant

• Current Assignee: Funai Electric Co., Ltd.
• Original Assignee: Funai Electric Co., Ltd.
• Inventors: Fukuda, Yutaka
• Granted Patent: US 7,859,608 B2
• Time in Patent Office: Days
• US Class Current: 345/89
• CPC Class Codes: G02F 1/133334 Electromagnetic shields
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 2202/22 Antistatic materials or arrangements

Abstract

On both sides of a resin-made frame, a metallic edge frame member that surrounds a liquid crystal panel and a metallic backboard member equipped with a circuit board are disposed, and these are screw-fitted to the frame. Screw-fitting points are provided as four points in corner portions, and by screws of these respective screw-fitting points, earth circuits that make the edge frame member electrically conductive to the backboard member are formed.

Claims

1. A liquid crystal display apparatus comprising:

a frame made of resin, the frame having a circular and rectangular shape, the frame having a flange extending across four side positions, and the frame having through holes;

a metallic edge frame surrounding a liquid crystal panel for a television receiver, the metallic edge frame sandwiching the liquid crystal panel with the frame, and

a metallic backboard member made thicker than the metallic edge frame and equipped with a circuit board, the metallic backboard member capable of being screw-fitted to the frame,

wherein the metallic edge frame member and the metallic backboard member are made electrically conductive by an earth fitting which is individually screw-fitted thereto,

wherein first mounting pieces having screw insertion holes are provided with both sides in one opposite side direction of the metallic edge frame member, respectively,

wherein second mounting pieces having screw holes provided with both sides in one opposite side direction of the metallic backboard member, respectively,

wherein the first mounting pieces and the second mounting pieces are fastened to the flange of the flame with headed screws inserted through the screw insertion holes of the first mounting pieces and the through-holes of the flange and the screw holes of the second mounting pieces, instead of omitting both the earth fitting and a mounting screw fitting the earth fitting to the metallic edge frame member and the metallic backboard member, so that the first and second mounting pieces and the headed screws form an earth conductive path which makes the metallic edge frame member electrically conductive to the metallic back board member,

wherein the fastening points are formed between the first mounting piece and the second mounting piece by the screws forming the earth conductive path,

wherein the fastening points are positioned in vicinities of four corner portions of the frame,

wherein the metallic edge frame member is fastened and jointed to the flange only at the fastening points,

wherein the metallic backboard member has projection pieces which is provided consecutively to both sides in the other opposite side direction thereof, respectively,

wherein the projection pieces are at least partially overlapped with the flange on both sides in the other opposite side direction of the frame, and

wherein the projection pieces on one side of the both sides in the other opposite side direction of the frame is screw-fitted to the flange.

2. A liquid crystal display apparatus comprising;

a frame made of resin, the frame having a circular and rectangular shape, the frame having a flange extending across four side positions and through holes;

a metallic edge frame surrounding a liquid crystal panel for a television receiver, the metallic edge frame sandwiching the liquid crystal panel with the frame, and

a metallic backboard member equipped with a circuit board, the metallic backboard member capable of being screw-fitted to the frame,

wherein first mounting pieces having screw insertion holes are provided with both sides in one opposite side direction of the metallic edge frame member, respectively,

wherein second mounting pieces having screw holes provided with both sides in one opposite side direction of the metallic backboard member, respectively,

wherein the first mounting pieces and the second mounting pieces are fastened to the flange of the flame with headed screws inserted through the through-holes of the flange, so that the first and second mounting pieces and the headed screws form an earth conductive path which makes the metallic edge frame member electrically conductive to the metallic backboard member, and

wherein the fastening points are positioned in vicinities of four corner portions of the frame.

3. The liquid crystal display apparatus according to claim 2, wherein

screw insertion holes are opened in one side of the first mounting pieces and the second mounting pieces,

screw holes are formed on the other side of the first mounting pieces and the second mounting pieces, and

the screws made of headed screws inserted through the screw insertion holes and the through-holes of the frame are screwed into the screw holes at overlapping points between the respective mounting pieces and flange.

4. The liquid crystal display apparatus according to claim 3, wherein the edge frame member is joined to the flange only at the fastening points between the first mounting piece and second mounting piece by the screws forming the earth conductive path,

wherein the metallic backboard member has projection pieces which are provided consecutively to both sides in the other opposite side direction thereof, respectively, and

wherein the projection pieces are at least partially overlapped with the flange on both sides in the other opposite side direction of the frame.

5. The liquid crystal display apparatus according to claim 4, wherein the projection pieces are screw-fitted to the flange.