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US 11,893,181 B2Granted
Touch driving device having a sensing circuit and display device including the same
AssigneeLx Semicon Co., Ltd.
InventorYong Woo Choi
Life of this patent
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Abstract
The present embodiment relates to a touch driving device and a display device including the same, and more particularly, to a touch driving device capable of reducing the power consumption thereof by changing a sampling method thereof and a pulse of a touch drive signal, compared to a conventional touch driving device, and a display device including the same.
Claims15
A touch driving device comprising:
- a drive signal generation circuit configured to generate a touch drive signal, the touch drive signal comprising one or more pulses, and to supply the touch drive signal to one touch electrode;
- and
- a sensing circuit configured to receive a reaction signal of the one touch electrode to the touch drive signal, to convert the received reaction signal into a sensing voltage, and to sample the sensing voltage a plurality of times during a time period corresponding to the pulse width of the touch drive signal.
A display device comprising:
- a panel comprising a plurality of touch electrodes;
- and
- a touch driving device configured to generate a touch drive signal, the touch drive signal comprising one or more pulses, and supply the generated touch drive signal to one touch electrode during a finger touch drive period, to receive a reaction signal of the one touch electrode to the touch drive signal and convert the received reaction signal into a sensing voltage, and to sample the sensing voltage a plurality of times during a pulse duration of the touch drive signal corresponding to the pulse width of the touch drive signal.
A touch driving device comprising:
- a drive signal generation circuit configured to generate a touch drive signal whose pulse width is extended to be longer than a sampling period of a sensing voltage and to supply the touch drive signal to one touch electrode;
- and
- a sensing circuit configured to receive a reaction signal of the one touch electrode to the touch drive signal, to convert the received reaction signal into the sensing voltage, and to sample the sensing voltage a plurality of times during a time period corresponding to the pulse width of the touch drive signal.
Dependencies are inferred from the claim text.