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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.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
76% of the total text.
Page 1 of 1
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