US 6,860,612 B2
Illuminated keyboard switch structureGeneral
US 6,860,612 B2
Illuminated keyboard switch structure
Tech Center:
2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing
Examiner:
Sandra O'Shea
Art Unit:
2875 Optics
Agent:
Inventors:
Chih-Hsiang Chiang; Liang-Ta Yeh
Assignee:
Priority:
11/30/01
Filed:
11/26/02
Granted:
03/01/05
Expiration:
12/15/22
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.
Cooperative Patent Classification (CPC)
H01H01H2219/0621H01HG02B6/0068G02B