Patent ID: 8730198
Filing Date: 2014-05-20
Classification: G06F,G09G

Abstract:
1. A display device comprising: a display panel having a plurality of pixels; a plurality of sensing units formed in row and column directions in the display panel, each of the sensing units generating a first sense data signal based on a contact on the display panel; a sense signal processor generating second sense data signals based on the first sense data signals; and a contact determiner generating first deviation data based on the second sense data signal of a predetermined frame and the second sense data signals of a sample frame group, generating second deviation data based on the first deviation data of a predetermined sensing unit and the first deviation data of a sample sensing unit, and determining whether a contact occurs and a contact position based on the second deviation data, where the second deviation data of a coordinate represents a difference between the first deviation data corresponding to the coordinate and the first deviation data of a last coordinate of a sample coordinate group; and wherein the first deviation data includes a maximum of differences between the second sense data signal of the predetermined frame and the second sense data signals of the sample frame group.