LCD device and its backlight module and back plate assembly

摘要

The present invention provides a LCD device, and its backlight module and back plate assembly. The back plate assembly contains a back plate, a blocking rim, a side wall, and a buffering element. The back plate supports the optical member of the backlight module. The blocking rim fixes the optical member jointly with the back plate, and supports a liquid crystal panel. The side wall has a back edge connected with the back plate and a front edge connected with the blocking rim. The buffering element is configured at an edge of the blocking rim that is away from the side wall and attached to the optical member and a liquid crystal panel, respectively. The present invention prevents the optical member and liquid crystal panel from contacting with the blocking rim and thereby being scratched, so as to provide effective protection.

主权项

1. A back plate assembly for a backlight module, comprising:
a back plate supporting an optical member of the backlight module; a blocking rim fixing the optical member jointly with the back plate, and supporting a liquid crystal panel; a side wall having a back edge connected with the back plate and a front edge connected with the blocking rim; and a buffering element, comprising a first buffering piece sandwiched between the blocking rim and the optical member so as to prevent the optical member from contacting with the blocking rim; a second buffering piece sandwiched between the blocking rim and the liquid crystal panel so as to prevent the liquid crystal panel from contacting with the blocking rim; and a linking piece joining the first and second buffering pieces;wherein
the blocking rim, the side wall, and the back plate jointly form a heat dissipation space around an edge of the optical member so that the edge of the optical member does not contact with the side wall and the back plate; a plurality of small through holes are configured on the side wall so as to speed up the heat exchange between external atmosphere and the heat dissipation space; and the first and second buffering pieces, and the linking piece jointly form an accommodation trough receiving an edge of the blocking rim that is away from the side wall.