
3M Touch System's MicroTouch TouchTek4
4-wire Analog Resistive Touchscreens
MicoTouch
TouchTek™4 4-wire analog
resistive touchscreens incorporate superior optical quality and input flexibility.
TouchTek4's specifications include narrow inactive border areas and compact touch sensors
which allow system designers and OEMs to provide the largest useable screen area and full
mouse emulation without sacrificing functionality or consuming excess power.
MicoTouch TouchTek4 touchscreens are ideal for use in hand-held
personal information management systems and PDAs; mobile computing systems; automotive,
diagnostics and telecomm devices, and Internet appliances.
MicoTouch TouchTek4, MicroTouch Systems 4-wire analog
resistive touchscreen, is the preferred solution for applications that require the
flexibility of mouse emulation with low power consumption. All MicoTouch TouchTek4 sensors employ a
superior film glass construction with a hardcoated polyester topsheet overlaid on a
conductively-coated glass layer.
4-wire touchscreens use the conductively-coated topsheet
to create one of the voltage planes, deriving one-half of the touch coordinate. When
touched, the topsheet is electrically charged, and the bottom layer serves as the feedback
or sense-line telling the electronics the raw voltage at the touch point. In the second
phase, the two busbars on the glass, or bottom layer become active to form a voltage
gradient. When touched, the topsheet serves as a line and sends the voltage information to
the electronics.
TouchTek4 touchscreens feature hard-coated polyester
topsheets, available in several surface finishes. Spacer dots are available in several dot
arrays, optimized for finger, pen and finger, or pen-only input. The conductively-coated
glass bottom sheet is available in several thicknesses. Electronic control is provided by
MicroTouch's MT410 serial controller, or with third-party 4-wire controllers.