MULTIPLE ROW RECEIVING LINE PATTERN FOR IN-CELL TOUCHSCREEN PANELS

摘要

An in-cell touchscreen panel includes columns of transmit electrodes and rows of sensing electrodes, wherein each row of sensing electrodes comprises a first subset of sensing electrodes coupled to control circuitry via a first subset of receiving traces and a second subset of sensing electrodes coupled to the control circuitry via a second subset of receiving traces. To enable multi-touch functionality, the in-cell touchscreen panel operates in a scanning mode where capacitance is measured at each node where the sensing electrodes intersect the transmit electrodes. During the scanning mode, the control circuitry senses the first and second subsets of receiving traces while applying drive signals to pairs of transmit electrodes. After a drive signal has been applied to each of the transmit electrodes, each of the nodes are measured to detect a capacitance. This capacitance is indicative of a user touch on the in-cell touchscreen panel.

主权项

1. An in-cell touchscreen panel, comprising:
a plurality of transmit electrodes each extending in a first direction along a display portion of the in-cell touchscreen panel; and one or more rows of sensing electrodes extending in a second direction along the display portion of the in-cell touchscreen panel substantially perpendicular to the first direction and intersecting the plurality of transmit electrodes, each row of sensing electrodes comprising a first subset of sensing electrodes coupled to one of a first subset of receiving traces and a second subset of sensing electrodes coupled to one of a second subset of receiving traces.