Capacitive touch sensor

A capacitive touch sensor comprising:

• a flat panel display;
• a touch sensor panel coupled to the flat panel display;
• a driving clock generator configured to generate time-periodic output signals with respect to a plurality of times, using a clock signal for driving a gate of the flat panel display;
• a driver configured to drive the touch sensor panel using a part of the output signals of the driving clock generator;
• and
• a receiver circuit unit configured to receive a signal from the touch sensor panel and reduce noise.

A capacitive touch sensor comprising:

• a flat panel display;
• a touch sensor panel coupled to the flat panel display;
• a driving clock generator configured to generate a plurality of time-periodic output signals using a clock signal for driving a gate of the flat panel display;
• a driver configured to drive the touch sensor panel using a part of the output signals of the driving clock generator;
• a receiver circuit unit configured to receive a signal from the touch sensor panel and reduce the influence of common electrode noise of the flat panel display;
• and
• an AC coupling circuit configured to transmit the waveform of the common electrode noise to the receiver circuit unit.

A capacitive touch sensor which includes a flat panel display for displaying an image and a touch sensor panel provided on or in the flat panel display, comprising:

• a driving clock generator configured to generate a plurality of time-periodic output signals using a clock signal for driving a gate of the flat panel display;
• a driver having multiple output terminals of which each is electrically coupled one-to-one to one of Y electrodes of the touch sensor panel;
• and
• a receiver circuit unit having multiple input terminals of which each is electrically coupled one-to-one to one of X electrodes of the touch sensor panel,
• wherein each of the multiple input terminals of the receiver circuit unit is electrically coupled one-to-one to an inverting input terminal of a charge amplifier existing in the receiver circuit unit, and
• mutual capacitance is formed between the flat panel display and an i-th Y electrode and a j-th X electrode of the touch sensor panel.

A capacitive touch sensor which drives a flat panel display and a touch sensor panel coupled to the flat panel display, comprising:

• a driving clock generator configured to generate a plurality of time-periodic output signals using a clock signal for driving a gate of the flat panel display;
• a driver configured to drive the touch sensor panel using a part of the output signals of the driving clock generator;
• a receiver circuit unit configured to receive a signal from the touch sensor panel and reduce the influence of common electrode noise of the flat panel display;
• and
• an analog-to-digital converter (ADC) configured to receive an output signal of the receiver circuit unit,
• wherein the driving clock generator, the driver, the receiver circuit unit, and the ADC are included in one integrated circuit chip.