Backlight module of a directly lighting backlight device

Details Backlight module of a directly lighting backlight device Backlight module of a directly lighting backlight device

2007-05-08

2007-05-08

O'Shea, Sandra (Department: 2875)

Illumination

Light modifier

Refractor

C362S097200, C362S216000, C362S260000

Reexamination Certificate

active

10958875

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.

REFERENCES:
patent: 5138223 (1992-08-01), Osada et al.
patent: 6191833 (2001-02-01), Hirakata
patent: 6871979 (2005-03-01), Mai
patent: 2005/0047174 (2005-03-01), Pan et al.

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