Piano-style keypad employing a light guide

Details Piano-style keypad employing a light guide Piano-style keypad employing a light guide

2006-07-18

2010-11-02

Eisen, Alexander (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

C340S407200

Reexamination Certificate

active

07825899

ABSTRACT:
An improved piano-style keypad comprises a light guide and a key sheet, with the light guide retaining the key sheet on a substrate, such as a printed circuit board of a handheld electronic device. The keypad is advantageously configured to enable key caps of the keypad to be adhered to key bodies of the keypad in a fashion that provides long-term reliability while still providing keys that can readily actuated and that provide tactile feedback that is desirable to the user.

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Webster's dictionary definition of adjacent: http://www.merriam-webster.com/dictionary/adjacent; May 7, 2010.
Webster's dictionary definition of membrane: http://www.merriam-webster.com/dictionary/flexible; May 7, 2010.

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