Touch screen panel
A touch screen panel includes a display unit including a timing controller for receiving a vertical synchronizing signal and a horizontal synchronizing signal to display an image, a touch sensing unit including driving electrodes, a control signal generator for generating a control signal from the vertical synchronizing signal and the horizontal synchronizing signal, and a touch controller for supplying a driving signal to the touch sensing unit in response to the control signal from the control signal generator.
1. A touch screen panel, comprising:
a display unit comprising a timing controller for receiving a vertical synchronizing signal and a horizontal synchronizing signal to display an image;
a touch sensing unit comprising driving electrodes;
a control signal generator for generating a control signal from the vertical synchronizing signal and the horizontal synchronizing signal; and
a touch controller for supplying a driving signal to the touch sensing unit in response to the control signal from the control signal generator;
wherein the control signal comprises a first control pulse and a second control pulse, and wherein the touch controller is configured to supply driving signals to the driving electrodes of the touch sensing unit corresponding to at least one of a rising edge or a falling edge of the first or second control pulses.
2. The touch screen panel as claimed in claim 1 , wherein the touch controller is configured to supply the driving signals after a delay from said rising edge or falling edge of the first or second control pulses.
3. The touch screen panel as claimed in claim 1 , wherein the control signal comprises a first control signal comprising the first control pulse and a separate second control signal comprising the second control pulse.
4. The touch screen panel as claimed in claim 1 , wherein the rising edge of the first control pulse coincides with a rising edge of the vertical synchronizing signal, and wherein the falling edge of the first control pulse coincides with a falling edge of the horizontal synchronizing signal.
5. The touch screen panel as claimed in claim 1 , wherein the falling edge of the second control pulse coincides with a falling edge of the horizontal synchronizing signal.
6. The touch screen panel as claimed in claim 1 , wherein the touch sensing unit further comprises sensing electrodes that cross the driving electrodes.
7. The touch screen panel as claimed in claim 1 , wherein the display unit further comprises:
a pixel region comprising pixels coupled to scan lines and data lines;
a scan driver for supplying scan signals to the pixels through the scan lines; and
a data driver for supplying data signals to the pixels through the data lines,
wherein the timing controller is configured to control the scan driver and the data driver.
8. The touch screen panel as claimed in claim 7 , wherein the touch controller is configured to supply the driving signal to one of the driving electrodes during a period when a scan signal is supplied substantially uniformly to a corresponding scan line and a data signal is supplied substantially uniformly to a corresponding row of the pixels coupled to said scan line.
9. The touch screen panel as claimed in claim 1 , wherein the timing controller comprises the control signal generator.