US 2022/0044610 A1 · TECHNOLOGY FOR DRIVING A PANEL

Abstract

The present invention provides a display device that simultaneously conducts display updates and touch sensing in some regions. The display device according to one aspect of the present invention comprises: a plurality of sensor electrodes for sensing approaches or touches of an object; a plurality of display electrodes for forming a data voltage in each pixel in conjunction with the sensor electrodes; a sensor driving circuit for supplying a first sensor electrode with a sensor driving signal; and a data driving circuit for supplying a first display electrode with a data signal which changes in response to the sensor driving signal so that the voltage between the first sensor electrode and the first display electrode becomes a first data voltage.

Claims15

Dependent claims

An apparatus for driving a panel comprising:

a data driving circuit to supply a data signal to a data line during a scan time section, where the data line and a display electrode of a pixel are connected with each other, to form a data voltage corresponding to a grayscale value of the pixel between the display electrode and a common electrode and to control a voltage of the data signal such that a voltage between the display electrode and the common electrode is maintained as the data voltage throughout a predetermined time section within the scan time section;
and
a sensor driving circuit to supply a sensor driving signal to the common electrode and to modulate, for a touch sensing, a waveform of the sensor driving signal to be an alternating current (AC) waveform in the predetermined time section within the scan time section.

Dependencies are inferred from the claim text.

Technology for driving a panel

Life of this patent

Technology for driving a panel

Life of this patent

Abstract

Claims15