POSITION DETECTION SYSTEM AND TOUCH SENSOR

A position detection system includes a display device that displays image data by driving pixel electrodes, and a touch panel including a sensor electrode and a touch sensor. An active pen communicates with the touch sensor using a frequency included in a frequency band. The display device suppresse...

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Bibliographic Details
Main Author Hisano, Haruhiko
Format Patent
LanguageEnglish
Published 07.07.2022
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A position detection system includes a display device that displays image data by driving pixel electrodes, and a touch panel including a sensor electrode and a touch sensor. An active pen communicates with the touch sensor using a frequency included in a frequency band. The display device suppresses a frequency component in the frequency band in capacitive noise that occurs in the sensor electrode due to a voltage vibration in an interconnect in the display device caused by driving of the pixel electrodes. The display device selectively operates in either of a first operation mode in which driving of the pixel electrodes suppresses the frequency component included in the capacitive noise that occurs in the sensor electrode, and a second operation mode in which driving of the pixel electrodes does not suppress the frequency component included in the capacitive noise that occurs in the sensor electrode.
Bibliography:Application Number: US202217703848