Motorola Corporation

Pinky Yu

Ken K Foo

John W Kaehler

Robert J Bero

A touchscreen display system () is provided which includes a touchscreen (), a touchscreen input detector (), a capacitive sensor driver (), and a display driver (). The touchscreen input detector () is coupled to a first layer () of the touchscreen () and determines a touchscreen () input in response to sensing tactile inputs during a sensing time interval (). The display driver () is coupled to a second layer () of the touchscreen () and provides a drive voltage () at a first voltage level to the plurality of optical shutter segments () during a first portion () of the sensing time interval () and maintains the drive voltage () at substantially zero volts during a second portion () of the sensing time interval (), the second portion () being greater than half of the sensing time interval ().

Optical shuttered touchscreen and method therefor

A display device including a plurality of display elements () arranged in a matrix, wherein each display element includes a display pixel () coupled to a switch (), and each display element includes an addressable latch () having an output coupled to a controlling input of the switch. The addressable latch includes a row address input () and a column address input (). In one mode of operation, at least some display elements are activated at a first rate, and other display elements are activated at a second rate less than the first refresh rate by selectively addressing the display elements.

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Grayslake, IL, United States of America

Pinky Yu