Touch sensing system
AssigneeLG Display Co., Ltd.
InventorsJuhan Kim, Seungkyeom Kim
Life of this patent
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Abstract
A touch sensing system is discussed. The touch sensing system includes sensor signal lines connected to segment electrodes, sensor enable lines to which a sensor enable pulse is applied, sensor thin film transistors (TFTs) which are turned on in response to the sensor enable pulse and supply a sensing pulse from the sensor signal lines to the segment electrodes, and a touch sensing circuit which applies the sensor enable pulse to the sensor enable lines, simultaneously turns on the two or more sensor TFTs, and applies the sensing pulse to the sensor signal lines.
Claims15
A touch sensing system, comprising:
- sensor signal lines connected to segment electrodes;
- sensor enable lines configured to receive a sensor enable pulse;
- sensor thin film transistors (TFTs) configured to be turned on in response to the sensor enable pulse;
- and
- a touch sensing circuit configured to apply the sensor enable pulse to the sensor enable lines, simultaneously turn on the two or more sensor TFTs, and apply the sensing pulse to the sensor signal lines,
- wherein the sensor TFTs and pixel TFTs are disposed on a same substrate,
- wherein each of the sensor TFTs is connected to a pixel on which an input image is displayed, and
- wherein the sensor TFTs are connected to the pixel TFTs, respectively, via the segment electrodes and a pixel electrode of the pixel.
A touch sensing system, comprising:
- sensor signal lines connected to segment electrodes;
- sensor enable lines configured to receive a sensor enable pulse;
- sensor thin film transistors (TFTs) configured to be turned on in response to the sensor enable pulse and supply a sensing pulse from the sensor signal lines to the segment electrodes;
- and
- a touch sensing circuit configured to apply the sensor enable pulse to the sensor enable lines, simultaneously turn on the two or more sensor TFTs, and apply the sensing pulse to the sensor signal lines,
- wherein the segment electrodes are formed using patterns obtained by dividing a common electrode for supplying a common voltage to pixels, and
- wherein the sensing pulse swings between a voltage greater than the common voltage and a voltage less than the common voltage.
Dependencies are inferred from the claim text.