Himax Technologies, Inc.

Ming-Kai Cheng

Chung-Wen Chang

Wen-Sen Su

Shen-Feng Tai

Fong-Wei Yang

Fong Wei Yang

Tzu-Hsi Yang

Min-Chi Kao

A touch detection system includes a stylus, a panel and a processing circuit. The panel can include a plurality of sensing cells used to receive a first signal and a second signal generated by a touch event. The processing circuit can be coupled to the panel and used to determine a plurality of first areas and a plurality of first intensities corresponding to the first signal, determine a plurality of second areas and a plurality of second intensities corresponding to a second signal, and determine whether the touch event is triggered by the stylus touching the panel according to the first intensities, first areas, the second intensities and the second areas.

Touch detection system and touch detection method for determining whether a touch event is triggered by a stylus

A touch-and-display device operated with an active stylus is provided. A touch position is detected in a touch detection period. An uplink signal is transmitted and a downlink signal is detected in a stylus detection period. When the downlink signal is detected, it is determined if a distance between a stylus position and the touch position is less than or equal to a first predetermined distance. A stylus mode is not entered if the determination result is affirmative.

Touch-and-display device operated with active stylus

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Tainan, Taiwan

Ming-Kai Cheng