Backlight button assemblage

Details Backlight button assemblage Backlight button assemblage

2007-08-07

2007-08-07

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S314000, C200S317000

Reexamination Certificate

active

11285177

ABSTRACT:
A backlight button assemblage includes an opaque button, a light-guiding element, and a light-emitting element. The light-emitting element is disposed under the button and light emitted from the light-emitting element is guided to the front side of the button via the light-guiding element surrounding the button. Light can therefore be evenly distributed over the light-guiding element, and uniformity of light achieved, so that partial dazzling spots are avoided, the quantity of light-emitting elements is reduced, and fabrication costs are saved.

REFERENCES:
patent: 5039832 (1991-08-01), Polacek et al.
patent: 5521345 (1996-05-01), Wulc
patent: 6590174 (2003-07-01), Zysnarski et al.
patent: 6855899 (2005-02-01), Sotome
patent: 6933453 (2005-08-01), Lee
patent: 7091434 (2006-08-01), Suzuki
patent: 1223295 (1992-11-01), None
patent: M248011 (1992-11-01), None

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