Method of scanning touch panel and touch integrated circuit for performing the same
AssigneeDongbu HiTek Co., Ltd.
InventorsWon Cheol Hong, Joon Song, Young Wook Kim, Jin Ah Lee
Life of this patent
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Abstract
According to embodiments, methods of scanning a touch panel and a touch integrated circuit (IC) for performing the same are disclosed. The touch IC simultaneously supplies a first driving signal having a first phase and a second driving signal having a second phase to a first driving line and a second driving line of the touch panel, respectively, and detects a sensing signal from a sensing line crossing the first driving line and the second driving line. The touch IC acquires a first scanning signal corresponding to the first driving line and a second scanning signal corresponding to the second driving line from the sensing signal.
Claims16
A method of scanning a touch panel, the method comprising:
- simultaneously supplying a first driving signal having a first phase and a second driving signal having a second phase to a first driving line and a second driving line of the touch panel, respectively;
- detecting a sensing signal from a sensing line crossing the first driving line and the second driving line;
- acquiring a first scanning signal corresponding to the first driving line and a second scanning signal corresponding to the second driving line from the sensing signal;
- integrating the first scanning signal and the second scanning signal to acquire a first integration value and a second integration value, respectively;
- simultaneously supplying the second driving signal and the first driving signal to the first driving line and the second driving line, respectively, after acquiring the first integration value and the second integration value;
- detecting a second sensing signal from the sensing line;
- acquiring a third scanning signal corresponding to the first driving line and a fourth scanning signal corresponding to the second driving line from the second sensing signal;
- and
- integrating the third scanning signal and the fourth scanning signal to acquire a third integration value and a fourth integration value, respectively.
A touch integrated circuit (IC) comprising:
- a touch driver connected with a first driving line and a second driving line of a touch panel, respectively;
- a signal processing unit connected with a sensing line crossing the first driving line and the second driving line;
- and
- a control unit configured to control operations of the touch driver and the signal processing unit, wherein
- the touch driver is configured to simultaneously supply a first driving signal having a first phase and a second driving signal having a second phase to the first driving line and the second driving line, respectively;
- the signal processing unit is configured to detect a first sensing signal from the sensing line, acquire a first scanning signal corresponding to the first driving line and a second scanning signal corresponding to the second driving line from the first sensing signal, and integrate the first scanning signal and the second scanning signal so as to acquire a first integration value and a second integration value, respectively;
- the touch driver is configured to simultaneously supply the second driving signal and the first driving signal to the first driving line and the second driving line, respectively, after acquiring the first integration value and the second integration value;
- and
- the signal processing unit is configured to detect a second sensing signal from the sensing line, acquire a third scanning signal corresponding to the first driving line and a fourth scanning signal corresponding to the second driving line from the second sensing signal, and integrate the third scanning signal and the fourth scanning signal so as to acquire a third integration value and a fourth integration value, respectively.
Dependencies are inferred from the claim text.