Patent · US Active

Integrated display and touch screen

US9268429B2 · kind B2 · utility

27Cited by

410References

4Claims

0Family size

Assignee

Apple Inc. · US

Inventors

Steve Porter Hotelling · Los Gatos, US
Wei Chen · Palo Alto, US
Christoph H. Krah · Los Altos, US
John Greer Elias · Townsend, US
Wei H. Yao · Palo Alto, US
John Z. Zhong · Saratoga, US
Andrew Hodge · Palo Alto, US
Brian R. Land · Woodside, US
Willem den Boer · Milpitas, US

Key dates

Filing date	Oct 7, 2013
Grant date	Feb 23, 2016
Priority date	—
Expiry date	Oct 7, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49826
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.