Abstract: The touch device includes a processor and a driving circuit. The processor performs an active object detection through the driving circuit to detect a first position of an active stylus on a touch panel. The processor performs a passive object detection through the driving circuit to detect a second position of a passive object on the touch panel. The processor defines a first detection range including the first position. The processor defines a second detection range on the touch panel based on the first detection range, in which the first detection range is mutually exclusive from the second detection range. Then, the processor performs the active object detection in the first detection range through the driving circuit, and the processor disables or ignores the active object detection in the second detection range.

Abstract: A touch detection method for generating a report includes obtaining a position of a touch point; determining a plurality of reference sensor pads according to the position of the touch point; determining a weight for each of the plurality of reference sensor pads according to the position of the touch point; evaluating a first evaluated peak value of the touch point based on sensing values of the plurality of reference sensor pads and the corresponding weights; and determining whether to generate the report for the touch point according to the first evaluated peak value and a first threshold.

Abstract: A method for controlling a plurality of types of styluses includes steps of: outputting a first uplink signal corresponding to a first type of stylus among the plurality of types of styluses, to detect the first type of stylus; and outputting a second uplink signal corresponding to a second type of stylus among the plurality of types of styluses, to detect the second type of stylus. The second type is different from the first type.

Abstract: A data transmission method includes: transmitting a plurality of first transmitting signals from a plurality of transmitting areas of the first touch device; determining, by the second touch device, whether a first sensing signal corresponding to the plurality of first transmitting signals is received; if yes selecting, by the second touch device, a receiving area in a first overlap range according to signal intensity of the first sensing signal; transmitting a second transmitting signal from the receiving area; determining, by the first touch device, whether a second sensing signal corresponding to the second transmitting signal is received; if yes, selecting, by the first touch device, a first transmitting area in a second overlap range from the plurality of transmitting areas according to signal intensity of the second sensing signal; determining a final transmitting area and a final receiving area; and performing a data transmission process.

Abstract: A data transmission method includes: transmitting a plurality of first transmitting signals from a plurality of transmitting areas of the first touch device; determining, by the second touch device, whether a first sensing signal corresponding to the plurality of first transmitting signals is received; if yes selecting, by the second touch device, a receiving area in a first overlap range according to signal intensity of the first sensing signal; transmitting a second transmitting signal from the receiving area; determining, by the first touch device, whether a second sensing signal corresponding to the second transmitting signal is received; if yes, selecting, by the first touch device, a first transmitting area in a second overlap range from the plurality of transmitting areas according to signal intensity of the second sensing signal; determining a final transmitting area and a final receiving area; and performing a data transmission process.

Abstract: An electronic circuit, adapted to drive a display panel comprising touch sensors, is provided. The electronic circuit can include a display driving circuit, a timing circuit and a touch scan circuit. The display driving circuit drives a touch display panel. The timing circuit receives a flag signal from a processing circuit and generates a scan start signal according to the flag signal. The touch scan circuit generates a plurality of touch scan signals according to the scan start signal and a touch column synchronization signal. The touch scan circuit determines a start time of a touch frame period according to a pulse of the scan start signal. The scan start signal can be asynchronous or delayed with respect to a touch frame synchronization signal generated by the display driving circuit.

Abstract: A touch scanning method shortening a first touch latency includes: scanning a Mth column of the N-column touch panel according to a touch scan (TSHD) signal; determining whether the finger is on the Mth column of the N-column touch panel according to a scan data signal; performing a fast done process according to a fast done signal when the finger is on the Mth column of the N-column touch panel; determining whether M equals to N when the finger is not on the Mth column of the N-column touch panel; and resetting M to 1 according to a scan start signal and performing an algorithm according to a finish flag signal.

Abstract: A touch scanning method shortening a first touch latency includes: scanning a Mth column of the N-column touch panel according to a touch scan (TSHD) signal; determining whether the finger is on the Mth column of the N-column touch panel according to a scan data signal; performing a fast done process according to a fast done signal when the finger is on the Mth column of the N-column touch panel; determining whether M equals to N when the finger is not on the Mth column of the N-column touch panel; and resetting M to 1 according to a scan start signal and performing an algorithm according to a finish flag signal.

Abstract: An electronic circuit, adapted to drive a display panel comprising touch sensors, is provided. The electronic circuit can include a display driving circuit, a timing circuit and a touch scan circuit. The display driving circuit drives a touch display panel. The timing circuit receives a flag signal from a processing circuit and generates a scan start signal according to the flag signal. The touch scan circuit generates a plurality of touch scan signals according to the scan start signal and a touch column synchronization signal. The touch scan circuit determines a start time of a touch frame period according to a pulse of the scan start signal. The scan start signal can be asynchronous or delayed with respect to a touch frame synchronization signal generated by the display driving circuit.

Abstract: A touch panel comprising a substrate, a plurality of first sensing electrodes, a plurality of second sensing electrodes, an insulating layer and a cover lens is provided. The first sensing electrodes are disposed on the substrate and are arranged in a first direction. The second sensing electrodes are disposed on the substrate and are arranged in a second direction. The first direction and the second directions are different. The insulating layer is disposed between the first and the second sensing electrodes. The cover lens is disposed on the insulating layer and has a non-uniform thickness. At least one of the surface areas of the first and the second sensing electrodes is related to the non-uniform thickness of the cover lens.