Display device having touch sensors and touch data processing method thereof
US9335843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2012 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Apr 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04112
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A display device having touch sensors includes a touch screen forming sensor nodes at crossings of Tx lines and Rx lines, a Tx driving circuit supplying a touch driving pulse to the Tx lines, an Rx driving circuit which receives voltages of the sensor nodes through the Rx lines, samples the sensor node voltages, and converts the sampled sensor node voltages into touch raw data through analog-to-digital conversion, and a touch controller which receives and binarizes the touch raw data, extracts a touch area based on the binarized touch raw data, differently sets a size of a computation block based on a position of the touch area and the number of touch areas, and performs a touch computation only on touch raw data of the computation block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.