Method of controlling touch sensor and related touch sensing circuit
AssigneeNovatek Microelectronics Corp.
InventorsSheng-Huang Chu, Yen-Cheng Cheng
Life of this patent
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Abstract
A method of controlling a touch sensor having a plurality of touch sensing electrodes includes steps of: outputting an uplink signal to a first touch sensing electrode among the plurality of touch sensing electrodes; and outputting an inverse uplink signal to a second touch sensing electrode among the plurality of touch sensing electrodes. The inverse uplink signal is substantially inverse to the uplink signal.
Claims23
A method of controlling a touch sensor, the touch sensor having a plurality of touch sensing electrodes, the method comprising:
- outputting a touch driving signal to the plurality of touch sensing electrodes to perform touch sensing, to generate a touch sensing result;
- and
- outputting an uplink signal to a first touch sensing electrode among the plurality of touch sensing electrodes;
- and outputting an inverse uplink signal to a second touch sensing electrode among the plurality of touch sensing electrodes according to the touch sensing result;
- wherein the uplink signal toggles with a first direction, and the inverse uplink signal toggles with a second direction opposite to the first direction.
A touch sensing circuit for controlling a touch sensor, the touch sensor having a plurality of touch sensing electrodes, the touch sensing circuit comprising a touch front-end circuit to:
- output a touch driving signal to the plurality of touch sensing electrodes to perform touch sensing, to generate a touch sensing result;
- and
- output an uplink signal to a first touch sensing electrode among the plurality of touch sensing electrodes;
- and output an inverse uplink signal to a second touch sensing electrode among the plurality of touch sensing electrodes according to the touch sensing result;
- wherein the uplink signal toggles with a first direction, and the inverse uplink signal toggles with a second direction opposite to the first direction.
Dependencies are inferred from the claim text.