Flat panel display device, stereoscopic display device, and plasma display device

摘要

The present invention provides a flat panel display device, which includes a backlight system and a display panel. The backlight system includes a light source, a light homogenization mechanism, and a back frame. The back frame carries the light source and the light homogenization mechanism, and the light homogenization mechanism guides light from the light source into the display panel. The back frame includes primary assembling pieces, secondary assembling pieces, and a bracing piece for fixing a circuit board. The primary assembling pieces are connected through joining and use different thermally conductive materials. Further, a circuit board is mountable and position adjustable through a bracing piece. The present invention also provides a stereoscopic display device and a plasma display device. The back frame and the backlight system of the present invention have a back frame of simple structure, reduce the expenditure of a back frame mold, facilitate heat dissipation, facility fixing of circuit board, and save the material used for back frame so as to lower down the cost of flat panel display device.

主权项

1. A flat panel display device, wherein the flat panel display device comprises a backlight system and a display panel, wherein:
the backlight system comprises a light source, a light homogenization mechanism, and a back frame; the back frame carries the light source and the light homogenization mechanism, the light homogenization mechanism guiding light from the light source into the display panel; the back frame comprises primary assembling pieces, secondary assembling pieces, and a bracing piece for fixing a circuit board having at least one major surface defining a normal direction; the primary assembling pieces have a number of at least two, at least one of the primary assembling pieces having an end forming a joint section, the at least two primary assembling pieces being joined through the corresponding joint sections, the secondary assembling pieces being connected to the primary assembling pieces through joining; the at least two primary assembling pieces comprise a primary assembling piece that has a heat source arranged thereon, the primary assembling piece that has the heat source arranged thereon having a first heat transfer capability, the remaining one or more primary assembling pieces of the at least two primary assembling pieces that have no heat source arranged thereon having a second heat transfer capability, the first heat transfer capability being greater than the second heat transfer capability; the bracing piece comprises a bracing body, a first suspension section and a second suspension section, a first bearing section and a second bearing section, and a first resilient bent section and a second resilient bent section, the bracing body being fixed to the primary assembling pieces or the secondary assembling pieces or both of the primary assembling pieces and the secondary assembling pieces, wherein available mounting points between the bracing piece and the primary assembling pieces or the secondary assembling pieces are of a number of at least two so that the bracing piece is selectively mounted to the back frame at different positions; and the first suspension section and second suspension section extend from the bracing body to be spaced from and opposing each other so as to define therebetween a receiving space for receiving the circuit board therein in such a way that the first and second suspension sections respectively engage first and second opposite side edges of the circuit board by having the circuit board moved into the space in a predetermined direction substantially parallel to the normal direction of the circuit board, the first bearing section and second bearing section being spaced from the bracing body and respectively extending from the first suspension section and the second suspension section to collectively receive the circuit board to be positioned thereon, the first resilient bent section and the second resilient bent section being respectively located between the first and second bearing sections and the bracing body and being respectively bent from the first and second suspension sections toward each other to define a passage having a size smaller than the receiving space, whereby when the circuit board is moved in the predetermined direction substantially parallel to the normal direction of the circuit board to reach and be positioned on the first and second bearing sections, the first bearing section and the first resilient bent section resiliently clamp the first side edge of the circuit board and the second bearing section and the second resilient bent section resiliently clamp the second side edge of the circuit board so as to clamp the circuit board between the first and second suspension sections of the bracing piece.