Patent ID: 6490015
Filing Date: 2002-12-03
Classification: G02F

Abstract:
A liquid crystal display device module, comprising:a backlight device having a) a lamp, b) a lamp housing surrounding the lamp, c) a reflecting sheet for reflecting light from the lamp, d) a light waveguide plate having four side walls, one of the four side walls fixed to the lamp housing and another side wall adjacent to the fixed side wall having a protruding portion, the light waveguide plate being located on the reflecting sheet, and e) a plurality of sheets located on the light waveguide plate; a liquid crystal panel located on the backlight device; a first frame located around the liquid crystal panel; and a second frame assembled with the first frame interposing the liquid crystal panel and the back light, the second frame having a recessed portion formed at a location corresponding to the protruding portion of the light waveguide plate, wherein a distance from the side wall fixed to the lamp housing of the light waveguide plate to the protruding portion is as small as about 0.1 mm, so that distance variation between the protruding portion of the light waveguide plate and the recessed portion of the second frame is small enough to be ignored.