Keypad with phosphor, keypad assembly and portable terminal

Details Keypad with phosphor, keypad assembly and portable terminal Keypad with phosphor, keypad assembly and portable terminal

2006-09-08

2009-10-13

Donovan, Lincoln (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S314000

Reexamination Certificate

active

07601926

ABSTRACT:
A keypad having a phosphor is disclosed. The keypad includes a light guide panel, the interior of which ultraviolet light propagates through; and at least one key top disposed on top of the light guide panel including a phosphor to absorb the ultraviolet light passing out through the light guide panel and emit visible light.

REFERENCES:
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patent: 6036326 (2000-03-01), Yoshikawa et al.
patent: 7186935 (2007-03-01), Lee et al.
patent: 2006/0254894 (2006-11-01), Jung et al.
patent: 2006/0260923 (2006-11-01), Lee et al.
patent: 2007/0068783 (2007-03-01), Kim et al.
patent: 2002-300258 (2002-10-01), None
patent: 2000-47226 (2000-07-01), None
patent: 10-606081 (2006-07-01), None
patent: 10-606082 (2006-07-01), None

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