TFT Display Overview

Atmel ® maXTouch
maXTouch is the solution for a gesture-capable multi-touch
display. maXTouch based solutions combine the robustness
of a sealed, scratch-resistant surface with the comfort of a
gesture-controlled user interface with a fast response time.
Smart software algorithms cancel out erroneous or unintentional
activation, maximizing ease-of-use with minimal
hardware overhead.
The maXTouch technology uses a pattern of conductive
layers, which usually consists of a transparent ITO (indiumtin-oxide)
coating on glass or plastic carrier surface.
This matrix pattern on two stacked layers forms an array of
sending and receiving antennas covering the entire active area
of the surface.
Driving and receiving hardware is embedded in the dedicated
maXTouch controller; no other analogue circuitry is required
to drive a touch panel.
Since maXTouch controller is capable of detecting multiple
independent touches within the active area, a reliable multitouch
recognition is possible.
Ingenious combination of the controller hardware and firmware
allow touch and gesture detection with fast response
times and rule out erroneous touches initiated by finger tips
holding the device or by a cheek, ear or casing inadvertently
pressed to it.
maXTouch enabled touch panels are a direct replacement
for their resistive counterparts: a rigid and sealed surface
protects the underlying display from scratches, aggressive
cleaning agents, water, dirt or other environmental influences:
the complete body or front panel can now become a
single sealed unit. Also the multi-touch capabilities of the
maXTouch technology pave the way for innovative user
interfaces, something which by concept is not possible using
resistive touch panels. Glass panels and foils with transparent
conductive layers are tailored to the customers’ requirements:
a wide range of display sizes in different aspect ratios can be
supported with the maXTouch based solution.
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