Touch screen panel with integrated touch and data drivers

摘要

A touch screen panel is disclosed. The touch screen panel includes a pixel unit, a touch sensing unit, and a data driver configured to provide data voltages to the pixel unit and to provide driving signals to the touch sensing unit.

主权项

1. A touch screen panel, comprising:
a pixel unit including pixels coupled to scan lines and data lines; a touch sensing unit including driving electrodes and sensing electrodes; a scan driver configured to supply scan signals to the pixels through the scan lines; a data driver comprising:
a data voltage outputting unit configured to:
receive a plurality of gray level voltages,generate data voltages based on the gray level voltages and corresponding to image data, andsupply the data voltages to the pixels through the data lines, anda driving signal outputting unit configured to supply a plurality of driving signals to the driving electrodes; and a touch controller configured to i) detect sensing signals output from the sensing electrodes and ii) supply a plurality of first control signals to the driving signal outputting unit, wherein the driving signal outputting unit is further configured to adjust the frequency and number of the driving signals applied to each driving electrode based on the first control signals, wherein the touch controller supplies the first control signals and a plurality of second control signals to the driving signal outputting unit when a touch synchronizing signal is supplied to the touch controller, wherein the driving signal outputting unit comprises:
a voltage varying unit configured to vary voltage levels of the first control signals to generate the driving signals; anda distributing unit configured to provide the driving signals to the driving electrodes according to the second control signals, wherein the data driver further comprises a gray level voltage generator configured to receive an uppermost voltage and to generate the plurality of gray level voltages based on the uppermost voltage and to supply the generated gray level voltages to the data voltage outputting unit, and wherein the voltage varying unit boosts voltage levels of the first control signals to be substantially the same voltage level as the voltage level of the uppermost voltage.