Backlight module of a directly lighting backlight device
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United States of America Patent
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May 8, 2007
Grant Date -
Apr 6, 2006
app pub date -
Oct 6, 2004
filing date -
Oct 6, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A backlight module of a directly lighting backlight device comprises a casing; at least one S shape lamp tube; a reflecting sheet positioned below the lamp tube; a guide plate; the reflecting sheet reflecting light from the lamp tube with a predetermined angle to a guide plate above the lamp tube; the guide plate having the effect of diffusing the light to various angles by the pattern on the guide plate or the diffusion agents; whole reflection being not formed so that light is emitted out from a front surface of the guide plate and thus the guide plate reflects light uniformly; a diffuser receiving the uniform distributed light; the diffuser being above the guide plate; and at least one light enhancing sheet; light diffused by the diffuser will further radiate to the at least one light enhancing sheets.
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