Illumination – Illuminated scale or dial – Internal light source
Reexamination Certificate
2007-09-25
2007-09-25
Quach-Lee, Y. My (Department: 2885)
Illumination
Illuminated scale or dial
Internal light source
C362S027000, C362S029000
Reexamination Certificate
active
11136529
ABSTRACT:
A direct-illumination backlight apparatus using LEDs includes a flat reflective plate, an LED light source, a transparent plate, a scattering pattern, and a light guide. The light guide serves to introduce a partial light from an LED light source at such an angle that the partial light is trapped inside the transparent plate, and the scattering pattern serves to scatter the trapped light beam at a position directly above the LED light source so that the scattered light beam escapes out of the transparent plate toward an LCD panel.
REFERENCES:
patent: 6561663 (2003-05-01), Adachi et al.
patent: 6989873 (2006-01-01), Hua-Nan et al.
patent: 2003/0117790 (2003-06-01), Lee et al.
Ahn Ho Sik
Hahm Hun Joo
Jeong Young June
Kim Bum Jin
Kim Hyung Suk
Lowe Hauptman Ham & Berner
Quach-Lee Y. My
Samsung Electro-Mechanics Co. Ltd.
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