Touch sensitive device, system and method thereof
AssigneesApex Material Technology Corp., Imagination Broadway Ltd.
InventorsShang-Li Lee, Zong-Bin Liao, Ke-Hao Ding
Life of this patent
Estimating the term…
Abstract
A touch sensitive detecting method, applicable to a touch panel or screen, comprises: setting a sensing electrode to floating; after the sensing electrode is set to floating, setting at least one non-measuring sensing electrode to a sensing high voltage; measuring the voltage of the sensing electrode; setting the sensing electrode to a ground voltage and stopping measurement; and determining whether an externally conducted object is approximating or touching the touch panel or screen nearby the sensing electrode by comparing a difference between a threshold voltage and the measured voltage of the sensing electrode.
Claims14
A touch sensitive detecting method, applicable to a touch panel or screen, comprising:
- setting a sensing electrode to floating;
- setting a non-measuring sensing electrode to a sensing high voltage after the sensing electrode is set to floating;
- measuring the voltage of the sensing electrode;
- setting the sensing electrode to a ground voltage and stopping measurement;
- and
- determining whether an externally conducted object is approximating or touching the touch panel or screen nearby the sensing electrode by comparing a difference between a threshold voltage and the measured voltage of the sensing electrode;
- and
- determining that there is conducted liquid on the touch panel or screen nearby the sensing electrode when the measured voltage of the sensing electrode is higher than the threshold voltage.
A touch sensitive device, applicable to a touch panel or screen, comprising:
- a sensing electrode;
- at least one non-measuring sensing electrode;
- and
- a processing circuit, electrically connected to the sensing electrode, the at least one non-measuring sensing electrode and the touch panel or screen;
- wherein the processing circuit sets the sensing electrode to floating;
- after the sensing electrode is set to floating, the processing circuit sets the at least one non-measuring sensing electrode to a sensing high voltage;
- the processing circuit measures the voltage of the sensing electrode;
- the processing circuit sets the sensing electrode to a ground voltage and stopping measurement;
- the processing circuit determines whether an externally conducted object is approximating or touching the touch panel or screen nearby the sensing electrode by comparing a difference between a threshold voltage and the measured voltage of the sensing electrode;
- and the processing circuit determines that there is conducted liquid on the touch panel or screen nearby the sensing electrode when the measured voltage of the sensing electrode is higher than the threshold voltage.
A touch sensitive system, comprising:
- a touch panel or screen;
- and,
- a processing circuit, electrically connected to the touch panel or screen;
- wherein the processing circuit sets a sensing electrode to floating;
- wherein after the sensing electrode is set to floating, the processing circuit sets at least one non-measuring sensing electrode to a sensing high voltage;
- wherein the processing circuit measures the voltage of the sensing electrode, and the processing circuit sets the sensing electrode to a ground voltage and stopping measurement;
- and
- wherein the processing circuit determines whether an externally conducted object is approximating or touching the touch panel or screen nearby the sensing electrode by comparing a difference between a threshold voltage and the measured voltage of the sensing electrode, and the processing circuit determines that there is conducted liquid on the touch panel or screen nearby the sensing electrode when the measured voltage of the sensing electrode is higher than the threshold voltage.
Dependencies are inferred from the claim text.