In-cell capacitive touch screen and touch contact detecting method and system thereof
US9298313B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2013 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Mar 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04184
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for detecting at ouch contact on an in-cell capacitive touch screen includes, based on the different gray scale pictures displayed by the in-cell capacitive touch screen in a non-touch state as well as a distribution of the intersections of rows and columns of the in-cell capacitive touch screen, obtaining noise values corresponding to different gray scales for each intersection, obtaining a theoretical noise value for each intersection under a condition of a current picture, and, for each intersection, compensating a detected signal with the theoretical noise value in the current picture to locate a position of the touch contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.