US Patent 6860612 Illuminated keyboard switch structure
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Patent 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.
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Patent Inventor Names
Chih-Hsiang Chiang0
Liang-Ta Yeh0
Date of Patent
March 1, 2005
0Patent Application Number
103055230
Date Filed
November 26, 2002
0Patent Primary Examiner
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US Patent 6860612 Illuminated keyboard switch structure
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