Touch Display Device, Driving Circuit, and Driving Method
AssigneeLG Display Co., Ltd.
InventorsSungChul KIM, HoonBae KIM, SunYeop KIM, Seongkyu KANG
Life of this patent
Estimating the term…
Abstract
A touch display device, a driving circuit, and a driving method are provided. An image defect which occurs when display driving and touch driving are simultaneously executed can be reduced by performing control such that a voltage level of a touch electrode driving signal (TDS) varies in a section other than a high-level period (Pon) of an ON-clock signal (ON_CLK) and/or a high-level period (Poff) of an OFF-clock signal (OFF_CLK).
Claims20
A touch display device comprising:
- a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are arranged;
- a gate driving circuit configured to output a scan signal to the plurality of gate lines;
- and
- a touch driving circuit configured to supply a touch electrode driving signal to one or more of the plurality of touch electrodes,
- wherein the touch electrode driving signal includes a first signal section having a first duty ratio and a second signal section having a second duty ratio that is different from the first duty ratio.
The touch display device according to claim 3, wherein the first gate line and the other gate line overlap an identical touch electrode.
A driving circuit comprising:
- a data driving circuit configured to output a data signal to data lines which are arranged on a display panel;
- a gate driving circuit configured to output a scan signal to a plurality of gate lines and a touch driving circuit configured to drive one or more of a plurality of touch electrodes which are arranged on the display panel and output a touch electrode driving signal to one or more of the plurality of touch electrodes,
- wherein the touch electrode driving signal includes a first signal section having a first duty ratio and a second signal section having a second duty ratio which is different from the first duty ratio.
Dependencies are inferred from the claim text.