Novatek Microelectronics Corp.

Taiwan Semiconductor Manufacturing Comp. Ltd.

Chun-Ching Huang

Chun-Hung Chen

Hung-Cheng Kuo

Chien-Wei Wang

Hui-Hung Chang

Shih-Ming Lin

Fang-Chun Lan

Yu-Chung Lin

A driver circuit, configured to drive a touch display panel, is provided. The touch display panel includes a sensor. The driver circuit includes a timing control circuit and a touch sensing circuit. The timing control circuit is configured to output a touch driving signal to the sensor. The sensor generates a sensing signal according to the touch driving signal. The touch sensing circuit is coupled to the timing control circuit and is configured to receive the sensing signal. The timing control circuit determines a timing of the touch driving signal according to a noise duration signal to drive the sensor to generate the sensing signal.

Driver circuit

A touch controller and a noise detection method that are capable of accurately detecting noises in a sensing signal are introduced. The touch controller may include a demodulator that is configured to receive a sensing signal and demodulate the sensing signal with a first frequency during a touch detection period. The demodulator may include a first filter that is configured to perform a noise detection operation on the sensing signal to output a first noise detection signal with a second frequency range adjacent to the first frequency. The first filter may have a plurality of peak frequencies different from the first frequency.

Touch controller and noise detection method using the same

A noise detection device includes a drive circuit, a sense circuit and a controller. The drive circuit drives a plurality of drive lines having a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period. The sense circuit senses a plurality of sense signals from at least one sense line during the predetermined time period. The controller derives a magnitude of a noise signal from the at least one sense line according to the sense signals.

Noise detection device, system and method

A method for processing sensing signals in a sensing system includes receiving at least one sensing signal; performing a first operation on the at least one sensing signal to determine whether the at least one sensing signal satisfies a first predetermined condition; performing a second operation on the at least one sensing signal after a second predetermined condition is determined to be satisfied, wherein the second predetermined condition comprises a condition that the first predetermined condition is determined to be satisfied, wherein the second operation provides more sensing information than the first operation; and not performing the second operation on the at least one sensing signal after a third predetermined condition is determined to be satisfied, wherein the third predetermined condition comprises a condition that the first predetermined condition is determined to be unsatisfied.

Method of processing sensing signals and related processor

A method of determining a touch event in a touch detection system includes: receiving at least one sensing signal corresponding to at least one driving signal configured to drive a touch panel; determining whether a touch event occurs by performing an initial digital operation on the at least one sensing signal; performing an entire determination on the at least one sensing signal after at least one of one or more predetermined conditions is determined to be satisfied, wherein one of the one or more predetermined conditions is that the touch event is determined to occur; and not performing the entire determination on the at least one sensing signal after each of the one or more predetermined conditions is determined to be unsatisfied.

A carrier touch sensing system includes a demodulation circuit coupled to a touch panel, used for performing in-phase and quadrature demodulations to a plurality of carrier sensing signals to generate and store a plurality of phase delay information if the carrier touch sensing system operates in a phase calibration mode. The demodulation circuit is further used for performing in-phase demodulation to the plurality of carrier sensing signals according to the plurality of phase delay information to generate a plurality of touch signals if the carrier touch sensing system operates in a normal scan mode.

Carrier touch sensing system capable of performing phase calibration and carrier signal demodulation

A method of determining a touch event in a touch detection system includes transmitting at least one driving signal to a touch panel of the touch detection system; receiving a sensing signal corresponding to the driving signal from the touch panel; determining whether the touch event occurs by performing an initial digital operation on the sensing signal; determining whether the sensing signal is interfered with by a noise signal; and performing an entire determination on the sensing signal when the touch event is determined to occur or the sensing signal is determined to be interfered with by the noise signal.

Method of determining touch event in touch detection system

The present invention discloses a serial interface transmitting method utilized in a serial interface for connecting between a master controller and a peripheral device. The serial interface transmitting method comprises receiving a saving power signal from the master controller, a peripheral clock source and a serial interface clock source for generating a clock source selection result, switching an operational mode of the peripheral device according to the clock source selection result, and transmitting a datum to a peripheral-device register or a serial interface register according to the saving power signal and the operational mode.

Serial interface transmitting method and peripheral device chip

A method and photoresist material for the patterning of integrated circuit (IC) components using ultra violet (UV) and extreme ultraviolet lithography (EUV) that includes providing a substrate, forming a first material layer over the substrate, forming a second material layer over the first material layer, the second material layer having a luminescent agent, and exposing one or more portions of the second material layer.

Growing community of inventors

Hsinchu County, Taiwan

Chun-Ching Huang