Illuminated keyboard switch structure

Details Illuminated keyboard switch structure Illuminated keyboard switch structure

2005-03-01

2005-03-01

O'Shea, Sandra (Department: 2875)

Illumination

Illuminated scale or dial

Internal light source

C362S028000, C362S095000, C200S314000, C200S317000

Reexamination Certificate

active

06860612

ABSTRACT:
An illuminated keyboard having a key portion, a backlight device, a light-condensing plate, a diffuser, a printed circuit board, and a light source. The key portion includes a seat and a key, and the key is disposed on the seat in a manner such that it is moved upwardly and downwardly. The backlight device is disposed beneath the key portion to illuminate the key portion. The light-condensing plate is disposed between the light guide and the key portion. The diffuser is disposed between the light guide and the key portion. The printed circuit board is disposed between the seat and the backlight device. The light source is disposed on the printed circuit board.

REFERENCES:
patent: 4449024 (1984-05-01), Stracener
patent: 4489227 (1984-12-01), Lamarche
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patent: 438035 (2001-05-01), None
patent: 465777 (2001-11-01), None

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