INTEGRATED DISPLAY AND TOUCH SCREEN
First Claim
1. A method of operating an integrated liquid crystal display touch screen whereby updating of the display can be done concurrently with touch scanning, the method comprising:
- dividing touch-sensing circuitry of the touch screen into a plurality of drive segments,each drive segment overlapping one or more display rows;
updating the display at a predetermined refresh rate;
stimulating the plurality of drive segments at a predetermined scan rate; and
changing the sequence of stimulating the plurality of drive segments as required to prevent simultaneously stimulating a drive segment that overlaps a display row currently being updated.
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Accused Products
Abstract
Liquid crystal display (LCD) touch screens integrate touch sensing elements with display circuitry and may include in-plane-switching (IPS) LCDs. A method of operating the integrated touch sensing elements with the display circuitry includes dividing touch-sensing circuitry of the touch screen into a plurality of drive segments, each drive segment overlapping one or more display rows; updating the display at a predetermined refresh rate; stimulating the plurality of drive segments at a predetermined scan rate; and changing the sequence of stimulating the plurality of drive segments as required to prevent simultaneously stimulating a drive segment that overlaps a display row currently being updated.
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Citations
13 Claims
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1. A method of operating an integrated liquid crystal display touch screen whereby updating of the display can be done concurrently with touch scanning, the method comprising:
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dividing touch-sensing circuitry of the touch screen into a plurality of drive segments, each drive segment overlapping one or more display rows; updating the display at a predetermined refresh rate; stimulating the plurality of drive segments at a predetermined scan rate; and changing the sequence of stimulating the plurality of drive segments as required to prevent simultaneously stimulating a drive segment that overlaps a display row currently being updated. - View Dependent Claims (2, 3, 4, 5)
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6. A method of manufacturing an integrated liquid crystal display touch screen, the method comprising:
- processing a first substrate, wherein processing the first substrate comprises;
applying a first ITO layer to the first substrate; etching the first ITO layer; applying a second ITO layer; processing a second substrate, wherein processing the second substrate comprises;
forming one or more touch-sensing structures on the second substrate;affixing the first substrate to the second substrate to form an LCD assembly; and affixing one or more touch-sensing elements to the LCD assembly. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
- processing a first substrate, wherein processing the first substrate comprises;
Specification