Patent ID: 8367947
Filing Date: 2013-02-05
Classification: G06F,H01H

Abstract:
1. A computer keyboard comprising: a plurality of keys, each of said keys comprising a keycap, an elastomeric material inserted within said keycap and a key contact embedded in said elastomeric material; a printed circuit board comprising PCB contacts associated with each of said key contacts, wherein one or more of said key contacts closes a circuit with said printed circuit board when one of said keys is depressed; wherein said printed circuit board further comprises a matrix of conducting lines and a plurality of diodes associated with each of said PCB contacts configured to prevent reverse current, thereby increasing a number of distinct key combinations to be transmitted to a microcontroller; wherein said key contact is embedded in said elastomeric material at a bottom edge portion of said keycap to enable said key contact to directly connect to said PCB contact when said key is depressed.