Touch sensing device and display device using the same
First Claim
1. A touch sensing device, comprising:
- a common electrode divided into a plurality of sensor electrodes;
a plurality of sensor lines respectively connected to the plurality of sensor electrodes;
a feedback voltage transmitter including;
a feedback line;
a plurality of switching elements configured to selectively connect the sensor lines to the feedback line so that a common voltage of the sensor lines is applied to the feedback line; and
a feedback control line configured to control selection of the switching elements; and
a common voltage compensator configured to;
receive a feedback voltage through the feedback line while the sensor lines are connected to the feedback line through the plurality of switching elements; and
compensate the feedback voltage to a reference voltage level,wherein the common voltage is a voltage commonly supplied to the common electrode through the sensor lines during a display driving period for displaying input image data;
wherein the sensor lines are equal in length; and
wherein the sensing device is configured to apply the common voltage to both ends of the sensor lines.
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Accused Products
Abstract
A touch sensing device comprises a common electrode divided into a plurality of sensor electrodes, a plurality of sensor lines respectively connected to the plurality of sensor electrodes, a feedback voltage transmitter, and a common voltage compensator. The feedback voltage transmitter includes a feedback line, a plurality of switching elements configured to selectively connect the sensor lines to the feedback line, and a feedback control line configured to control selection of the switching elements. The common voltage compensator is configured to receive a feedback voltage supplied to the sensor lines through the feedback line while the sensor lines are connected to the feedback line through the plurality of switching elements, and compensate the feedback voltage to a reference voltage level.
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Citations
14 Claims
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1. A touch sensing device, comprising:
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a common electrode divided into a plurality of sensor electrodes; a plurality of sensor lines respectively connected to the plurality of sensor electrodes; a feedback voltage transmitter including; a feedback line; a plurality of switching elements configured to selectively connect the sensor lines to the feedback line so that a common voltage of the sensor lines is applied to the feedback line; and a feedback control line configured to control selection of the switching elements; and a common voltage compensator configured to; receive a feedback voltage through the feedback line while the sensor lines are connected to the feedback line through the plurality of switching elements; and compensate the feedback voltage to a reference voltage level, wherein the common voltage is a voltage commonly supplied to the common electrode through the sensor lines during a display driving period for displaying input image data; wherein the sensor lines are equal in length; and wherein the sensing device is configured to apply the common voltage to both ends of the sensor lines. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A display device, comprising:
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a display panel including; a common electrode divided into a plurality of sensor electrodes; a feedback line; a plurality of sensor lines respectively to the plurality of sensor electrodes; a plurality of switching elements configured to selectively connect the sensor lines to the feedback line so that a common voltage of the sensor lines is applied to the feedback line; a feedback control line configured to control selection of the switching elements; and a common voltage compensator configured to; receive a feedback voltage through the feedback line while the sensor lines are connected to the feedback line through the plurality of switching elements; and compensate the feedback voltage to a reference voltage level, wherein the common voltage is a voltage commonly supplied to the common electrode through the sensor lines during a display driving period for displaying input image data; wherein the sensor lines are equal in length; and wherein the display device is configured to apply the common voltage to both ends of the sensor lines. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification