Keypad

Details Keypad Keypad

2007-06-19

2007-06-19

Lee, K. (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S314000

Reexamination Certificate

active

11308552

ABSTRACT:
A keypad suitable for being disposed on a circuit board is provided. The keypad is in contact with the circuit board to generate an electrical signal. The keypad includes a flexible light guide plate, a key pattern, a passivation layer, a light source, and a reflector. Wherein, the key pattern and the passivation layer are both disposed on a first surface of the flexible light guide plate, and the passivation layer covers the key pattern. In addition, the light source and the reflector are both disposed at one side of the flexible light guide plate, and the reflector covers the light source. The keypad has better display brightness such that the user can easily recognize the patterns of the keys.

REFERENCES:
patent: 6861600 (2005-03-01), Schulz et al.
patent: 6911608 (2005-06-01), Levy
patent: 2003/0062519 (2003-04-01), Yamazaki et al.
patent: 2004/0235279 (2004-11-01), Kim
patent: 2005/0029631 (2005-02-01), Kim et al.
patent: 2005/0185422 (2005-08-01), Henriet et al.
patent: 2006/0012901 (2006-01-01), Shigemura et al.
patent: 2006/0159945 (2006-07-01), Halik et al.

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