Browse Prior Art Database

Pressure-Sensing Touch Panel

IP.com Disclosure Number: IPCOM000061325D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Balliet, L Bou-Ghannam, A [+details]

Abstract

This article describes a pressure-sensing touch panel for computer display entry utilizing a specially constructed overlay over the face of the display. Touch-sensitive screens are increasingly important as input devices to digital computers. Implementation techniques presently employed include the use of infrared (IR) emission and detection, conductive and capacitive overlays and strain gauges. Present approaches are generally either unreliable, expensive or difficult to use without special mounting. The panel disclosed herein is a potentially low cost alternative to the present art that does not exhibit these undesirable characteristics. A specially constructed overlay is placed over the face of the display and detects the pressure caused by a finger (or other object) when it touches the surface. Fig.