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US 2019/0294272 A1Published application
Touch controller and touchscreen device
AssigneeSamsung Electronics Co., Ltd.
InventorsYun Rae JO, Bum Soo KIM, Kyeong Gon LEE, Yoon Kyung CHOI
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Abstract
A touch controller includes a driving circuit receiving a clock signal having a first cycle to generate a driving signal, and providing the driving signal to a touch panel; a sensing circuit sensing a sensing signal generated in the touch panel by the driving signal every second cycle, and generating touch data based on the sensing signal; and a control logic controlling the driving circuit and the sensing circuit such that the second cycle is an integer multiple of the first cycle.
Claims20
A touch controller comprising:
- a driving circuit configured to generate a driving signal based on a clock signal, and to provide the driving signal to a touch panel, the clock signal having a first cycle;
- a sensing circuit configured to sense a sensing signal, and generate touch data based on the sensing signal, the sensing signal being generated by the touch panel based on the driving signal such that the sensing signal has a second cycle;
- and
- a controller configured to control the driving circuit and the sensing circuit such that the second cycle is an integer multiple of the first cycle.
1 more element
A touchscreen device comprising:
- a touch panel configured to attach to a front surface of a display device, the display device operating according to a control signal;
- a driving circuit configured to generate a driving signal based on a clock signal having a first frequency, and to provide the driving signal to the touch panel;
- a sensing circuit configured to sense a sensing signal, the sensing signal being generated by the touch panel based on the driving signal such that the sensing signal has a second frequency, the second frequency being same as a frequency of the control signal;
- and
- a touch controller configured to generate the clock signal such that the first frequency is an integer multiple of the frequency of the control signal.
2 more elements
A touch controller comprising:
- a driving circuit operating according to a clock signal having a first frequency, the driving circuit configured to generate a driving voltage to drive touch sensors of a touch panel;
- a sensing circuit operating according to a sampling frequency, the sensing circuit configured to generate touch data by detecting a change in capacitance from the touch sensors;
- and
- a controller configured to generate the clock signal by adjusting the first frequency based on the sampling frequency such that the first frequency is an integer multiple of the sampling frequency.
1 more element
Dependencies are inferred from the claim text.