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Resistive Film Touch Panel

IP.com Disclosure Number: IPCOM000061866D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Droge, DA: AUTHOR [+3]

Abstract

A resistive film touch panel for receiving a touch input is protected from environmental affects by a spaced outer layer of a plastic sheet, such as "light control film", a product of the 3M Corporation.

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Resistive Film Touch Panel

A resistive film touch panel for receiving a touch input is protected from environmental affects by a spaced outer layer of a plastic sheet, such as "light control film", a product of the 3M Corporation.

As shown in the Figure, a display such as a cathode ray tube 1 includes a resistive film overlay 2 carried on an outer surface thereof. Adjacent the resistive film 2 is a flexible screen 3, preferably made of a plastic such as cellulose acetate butyrate, such as is sold by the 3M Corporation as its "light control film" product. This plastic sheet or flexible screen 3 is normally spaced from the resistive film 2 until an applied force urges the sheet into the film and thereby generates an electrical signal from the resistive film 2.

As shown in this Figure, the flexible screen 3 is held in position in a bezel 4 which is secured by a mounting bracket 5 to a portion of a CRT frame 6. Environmental seal 7 is mounted between the bezel 4 and the flexible screen 3 to protect the resistive film 2 from temperature, humidity, sun, debris and moisture. The flexible screen 3 also protects the resistive film 2 from vandal attack, unintentional scratching with fingernail, rings, or other hardware and allows for a surface which may be easily cleaned, resists solvents and minimizes glare, even in an outside location. The flexible screen 3 is shown depressed into the resistive film 2 by an operator's finger 8 in the view shown. The applied force of the...