Touch display device, touch system, driving circuit, and driving method

A touch display device includes a display panel configured to have a plurality of data lines, a plurality of gate lines, and a plurality of common electrodes. A driving circuit is configured to supply an uplink signal to at least a subset of the plurality of common electrodes disposed in at least a...

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Bibliographic Details
Main Authors HoonBae Kim, CheolSe Kim, SangHyuck Bae
Format Patent
LanguageEnglish
Published 17.07.2019
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A touch display device includes a display panel configured to have a plurality of data lines, a plurality of gate lines, and a plurality of common electrodes. A driving circuit is configured to supply an uplink signal to at least a subset of the plurality of common electrodes disposed in at least a first region of the display panel during the display blank period to enable a pen, or stylus, to detect the uplink signal when the pen is in contact with or is adjacent to the display panel. In another embodiment, a touch display device comprises a touch controller configured to sense a first region of the display panel that is not in contact with a part of a human body, such as a palm, and a second region of the display panel that is in contact with the part of the human body. A driving circuit supplies an uplink signal to the first region and not to the second region.
Bibliography:Application Number: GB20180019497