US 11,693,518 B2 · Touch driver circuitand driving method, and driver apparatus of touch display device

Abstract

The present disclosure relates to a touch driver circuit capable of reducing the distortion of a common voltage modulation signal caused by line resistance. The touch driver circuit may include a touch power integrated circuit configured to generate a reference gamma voltage set to output the reference gamma voltage set through a gamma transmission path during a display period, and generate a touch driving voltage to output the touch driving voltage through the gamma transmission path during a touch period, and a source-readout integrated circuit configured to drive a source driving circuit block using the reference gamma voltage set during the display period, and generate a common voltage modulation signal using the touch driving voltage to drive a readout circuit block using the generated common voltage modulation signal during the touch period.

Claims20

Dependent claims

A touch driver circuit comprising:

an active gamma voltage generation block configured to generate a reference gamma voltage set and output the reference gamma voltage set through a gamma transmission path during a display period, and generate a touch driving voltage and output the touch driving voltage through the gamma transmission path during a touch period;
a switching block configured to output the reference gamma voltage set supplied through the gamma transmission path to a first path during the display period, and output the touch driving voltage supplied through the gamma transmission path to a second path during the touch period;
and
a common voltage modulation block configured to generate and output a common voltage modulation signal using the touch driving voltage supplied through the switching block and the second path during the touch period.

1 more element

A method of driving a touch driver circuit, the method comprising:

generating a reference gamma voltage set and outputting the reference gamma voltage set through a gamma transmission path by an active gamma voltage generation block of a touch power integrated circuit during a display period of a touch synchronization signal;
generating a data voltage using the reference gamma voltage set and outputting the data voltage to a data line by a source-readout integrated circuit during the display period of the touch synchronization signal;
generating a touch driving voltage and outputting the touch driving voltage through the gamma transmission path by the active gamma voltage generation block of the touch power integrated circuit during a touch period of the touch synchronization signal;
and
generating a common voltage modulation signal using the touch driving voltage and outputting the generated common voltage modulation signal to a touch routing line by the source-readout integrated circuit during the touch period of the touch synchronization signal.

2 more elements

A driver apparatus of a touch display device, the driver apparatus comprising:

a touch power integrated circuit configured to generate a reference gamma voltage set to output the reference gamma voltage set through a gamma transmission path during a display period of a touch synchronization signal, and generate a touch driving voltage to output the touch driving voltage through the gamma transmission path during a touch period of the touch synchronization signal;
and
a source-readout integrated circuit configured to output a data voltage using the reference gamma voltage set during the display period, and generate a common voltage modulation signal using the touch driving voltage to output the generated common voltage modulation signal during the touch period.

Dependencies are inferred from the claim text.

Touch driver circuitand driving method, and driver apparatus of touch display device

Life of this patent

Touch driver circuitand driving method, and driver apparatus of touch display device

Life of this patent

Abstract

Claims20