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US 2022/0187941 A1Published application
Touch driving circuit, touch display device, and touch driving method thereof
AssigneeLG Display Co., Ltd.
InventorsSeungChul PARK, KiJeong LEE, MinKi KIM, ChangHwan SEO
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Abstract
A touch driving circuit, a touch display device, and a touch driving method are discussed, which are capable of reducing power consumption by dividing into an active mode and an idle mode according to a touch sensing type, shortening the touch driving period in the idle mode and reducing some operations related to the image displaying function.
Claims15
A touch display device, comprising:
- a display panel including a plurality of touch electrodes;
- a touch driving circuit being divided into a first mode and a second mode according to a touch sensing type, and configured to detect a touch presence or a touch position based on a touch sensing signal received from the plurality of touch electrodes;
- and
- a timing controller configured to generate a touch synchronization signal so that a touch driving period in the second mode of the touch synchronization signal is shorter than a touch driving period in the first mode of the touch synchronization signal, and supply the touch synchronization signal to the touch driving circuit.
1 more element
A touch driving circuit comprising:
- a touch sensing circuit configured to supply a touch driving signal to a display panel including a plurality of touch electrodes, and receive a touch sensing signal received from the plurality of touch electrodes;
- and
- a touch controller configured to generate a mode control signal according to the touch sensing signal, receive a touch synchronization signal divided into a first mode and a second mode according to the mode control signal, and detect a touch presence or a touch position according to the touch synchronization signal,
- wherein the touch synchronization signal is configured so that a touch driving period in the second mode of the touch synchronization signal is shorter than a touch driving period in the first mode of the touch synchronization signal.
1 more element
A touch driving method comprising:
- receiving a touch sensing signal from a plurality of touch electrodes disposed on a display panel;
- generating a mode control signal according to the touch sensing signal;
- generating a touch synchronization signal divided into a first mode and a second mode according to the mode control signal,
- wherein the touch synchronization signal is configured so that a touch driving period in the second mode of the touch synchronization signal is shorter than a touch driving period in the first mode of the touch synchronization signal;
- and
- supplying a touch driving signal to the display panel during a touch driving period determined by the touch synchronization signal.
3 more elements
Dependencies are inferred from the claim text.