IN-CELL TOUCH PANEL AND DISPLAY DEVICE

摘要

An in-cell touch panel and a display device are disclosed. A plurality of mutually independent self-capacitance electrodes arranged in the same layer are disposed in the touch panel in accordance with the self-capacitance principle. A touch detection chip can determine the touch position by the detection of the capacitance variation of the self-capacitance electrode. Compared with the case that body capacitance only acts on the projected capacitance in mutual capacitance, the in-cell touch panel can effectively improve the signal-to-noise ratio of touch and hence can improve the accuracy of touch sensing.

主权项

1. An in-cell touch panel, comprising: a first substrate and a second substrate arranged opposite to each other, a common electrode layer disposed on one side of the first substrate facing the second substrate, and a touch detection chip, wherein
the common electrode layer includes a plurality of mutually independent self-capacitance electrodes and a plurality of leads configured to connect the self-capacitance electrodes to the touch detection chip; and the touch detection chip is configured to apply common electrode signals to the self-capacitance electrodes in a display period and determine the touch position by the detection of the capacitance variation of the self-capacitance electrode in a touch period.