Piano-style keypad employing a light guide

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

H - Electricity

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H

H01H 13/83 (2006.01) F21V 8/00 (2006.01) F21V 33/00 (2006.01) G06F 3/02 (2006.01) H01H 13/708 (2006.01)

Patent

CA 2594028

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.

Un clavier genre piano amélioré comprend un guide d'ondes optique et une feuille à touches. Le guide d'ondes optique retient la feuille à touches sur un support, comme une carte de circuits imprimés de dispositif électronique portatif. La configuration de ce clavier est avantageuse pour que les dessus de touches du clavier puissent adhérer aux touches de manière à assurer une fiabilité à long terme, tout en présentant des touches vite déclenchables et qui fournissent la rétroaction tactile souhaitable pour l'utilisateur.

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