Single-layer touchpad having touch zones

Details Single-layer touchpad having touch zones Single-layer touchpad having touch zones

2005-08-26

2008-09-09

Osorio, Ricardo L (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S173000

Reexamination Certificate

active

07423635

ABSTRACT:
A single-layer touchpad comprised of a relatively clear substrate, a first active electrode disposed thereon, and a sense electrode disposed thereon, wherein the first active electrode and the sense electrode are comprised of a conductive material, wherein the first active electrode in combination with the sense electrode are used to detect the presence of a pointing object in a zone, determining in which zone the pointing object has been detected, or the simultaneous presence of multiple pointing objects in multiple zones, and wherein the first active electrode and/or the sense electrode are made sufficiently visible so that a pattern is visually detectable to the user when looking at the display screen.

REFERENCES:
patent: 5159159 (1992-10-01), Asher
patent: 5543589 (1996-08-01), Buchana et al.
patent: 5543590 (1996-08-01), Gillespie et al.
patent: 6504530 (2003-01-01), Wilson et al.
patent: 6633279 (2003-10-01), Kono et al.
patent: 2002/0015024 (2002-02-01), Westerman et al.
patent: 2002/0093491 (2002-07-01), Gillespie et al.

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