Touch sensing method, touch display apparatus and portable electronic device
AssigneeIndustrial Technology Research Institute
InventorsChien-Ju Lee, Yen-Lin Pan, Yi-Chuan Lu, Heng-Yin Chen
Life of this patent
Estimating the term…
Abstract
A touch sensing method, a touch display apparatus and a portable electronic device thereof are provided. A system, a driving method and an architecture of a provided touch display panel are used for decreasing a resistance value between the ultrathin touch display panel (for example, a combination of an AMOLED display panel and a touch panel) or decreasing an influence of the resistance value, so as to decrease a chance of induction error of the touch event or induction misjudgement.
Claims18
A touch sensing method, adapted to a touch display apparatus, wherein the touch display apparatus comprises a display panel and a touch panel, the display panel comprises an electrode layer, and the touch panel comprises a driving electrode layer, the touch sensing method comprising:
- applying a voltage to the driving electrode layer;
- setting a system parameter to determine whether an induction event is occurred, if not, obtaining a sensing voltage, and if yes, obtaining a parasitic capacitance voltage corresponding to the induction event;
- and
- determining whether a value obtained by subtracting the sensing voltage from the parasitic capacitance voltage is smaller than a threshold voltage,
- if yes, adjusting the system parameter, and determining whether a next induction event is occurred according to the updated system parameter,
- if not, determining whether a variation of the sensing voltage is smaller than a threshold,
- if not, reporting a touch point,
- if yes, adjusting the system parameter, and determining whether a next induction event is occurred according to the updated system parameter.
A touch sensing method, adapted to a touch display apparatus, wherein the touch display apparatus comprises a display panel and a touch panel, the display panel comprises an electrode layer, and the touch panel comprises a driving electrode layer, the touch sensing method comprising:
- applying a first voltage to the driving electrode layer and applying a second voltage to the electrode layer during an induction driving period, wherein the second voltage is greater than or equal to the first voltage;
- reading an induction event of the driving electrode layer during the induction driving period, and generating a sensing voltage corresponding to the induction event;
- and
- determining whether the sensing voltage is greater than a threshold, and if yes, reporting a touch point.
A portable electronic device, comprising:
- a touch display apparatus, comprising a display panel and a touch panel, wherein the display panel comprises an electrode layer, and the touch panel comprises a driving electrode layer;
- and
- at least one equipotential electrode, wherein a voltage level of the at least one equipotential electrode is equal to or smaller than a voltage level of the electrode layer of the display panel during an induction driving period.
A touch sensing method, adapted to a portable electrode device, wherein the portable electronic device comprises a main body of a back plate, the main body is configured with a touch display apparatus therein, where the touch display apparatus comprises a display panel and a touch panel, the display panel comprises an electrode layer, the touch panel comprises a driving electrode layer, and the back plate is configured with a plurality of equipotential electrodes, the touch sensing method comprising:
- during an induction driving period, applying a signal with a first voltage level to the electrode layer of the display panel and applying a signal with a second voltage level to the equipotential electrodes, wherein the first voltage level is greater than or equal to the second voltage level;
- reading an induction event of the driving electrode layer, and generating a sensing voltage corresponding to the induction event;
- and
- determining whether the sensing voltage is greater than a threshold, and if yes, reporting a touch point.
Dependencies are inferred from the claim text.