Himax Technologies, Inc.

Feng-Wei Yang

Shen-Feng Tai

Chung-Wen Chang

Jui-Ming Liu

A touch sensing method adapted for an electronic apparatus including a touch panel is provided. A touch sensing method includes the following steps: obtaining a mutual-mode data by sensing a gesture applied on the touch panel in a mutual capacitance mode during a first period of a sensing frame; obtaining a self-mode data by sensing the gesture applied on the touch panel in a self capacitance mode during a second period of the sensing frame; and determining a touch location associated with the gesture on the touch panel based on the self-mode data or the mutual-mode data. Furthermore, an electronic apparatus to which the foregoing touch sensing method is applied is also provided.

Touch sensing method and electronic apparatus using the same

A touch sensing method adapted for an electronic apparatus including a touch panel is provided. The touch sensing method includes the following steps: driving the touch panel by a mutual capacitance mode and a self capacitance mode; sensing a gesture applied on the touch panel, wherein the gesture forms at least one touch area on the touch panel; determining at least one geometric center of the at least one touch area based on self-mode data obtained in the self capacitance mode; and determining at least one touch location associated with the gesture on the touch panel based on the at least one geometric center of the at least one touch area. Furthermore, an electronic apparatus to which the foregoing touch sensing method is applied is also provided.

A positioning method and a driving apparatus for a touch panel having a plurality of sense electrodes in an axis direction are disclosed. The driving apparatus detects the sense electrodes to obtain a plurality of sensed values. The driving apparatus counts the number of multiple candidate electrodes, wherein the candidate electrode is an electrode having a sensed value larger than a first threshold value. The first threshold value is increased and the number of the candidate electrodes is counted again if the number of the candidate electrodes is larger than a second threshold value. At least one electrode is selected as a positioning electrode from the candidate electrodes if the number of the candidate electrode is not larger than the second threshold value. A position of a touch point on the touch panel in the axis direction is calculated based on the position and sensed value of the positioning electrode.

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Tainan, Taiwan

Feng-Wei Yang