Patent ID: 7697087
Filing Date: 2010-04-13
Classification: G02F

Abstract:
1. A direct type backlight module, comprising: a housing having a bottom plate and at least one platform support extending from the bottom plate towards an interior of the housing, the at least one platform support comprising a ceiling and two sidewalls, and each sidewall extending from the bottom plate; a reflective sheet supported by the at least one platform support, the reflective sheet defining a plurality of through holes; a plurality of point light sources arranged in the housing corresponding to the through holes of the reflective sheet, each point light source including a base portion and a light emitting portion, the base portion being secured at the bottom plate of the housing, and the light emitting portion protruding through a corresponding one of the through holes; and a dust filtering member received in a space defined by the ceiling and the two sidewalls of the at least one platform support.