Backlight module having light diffusing device

Details Backlight module having light diffusing device Backlight module having light diffusing device

2007-01-30

2007-01-30

O'Shea, Sandra (Department: 2875)

Illumination

Illuminated scale or dial

Internal light source

C362S030000, C362S561000, C362S633000, C349S058000, C349S064000

Reexamination Certificate

active

11124088

ABSTRACT:
A backlight module having a light diffusing device is disclosed, comprising a frame, a reflecting plate, a top plate and at least one light source module, in which the reflecting plate having an upper surface is mounted on a bottom side of the frame and the top plate is mounted on a top side of the frame to space a predetermined distance from the reflecting plate. The light source module is mounted on the upper surface of the reflecting plate, including a light source and a light diffusing device mounted between the light source and the top plate. The light diffusing device has an un-uniform thickness which is inversely proportional to the distance between the light source and the top plate. Thus, the problem of non-uniform luminance distribution caused by a change in the distance between the light source and the top plate is eliminated.

REFERENCES:
patent: 2003297120 (2003-10-01), None

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