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US 12,596,453 B2Granted
Touch sensor and a method for detecting a user's touch
AssigneeSamsung Display Co., Ltd.
InventorsJeong Heon Lee, Jung Hak Kim, Yun A Ma
Life of this patent
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Abstract
A touch sensor is provided. The touch sensor including: first touch electrodes; scan lines connected to the first touch electrodes; and a controller that applies a scan signal to each of the scan lines, wherein the scan signal includes a plurality of unit signals in a first time period and a second time period, and includes a gap signal in a gap period between the first time period and the second time period, and an amplitude of each of the plurality of unit signals is greater than an amplitude of the gap signal.
Claims13
A touch sensor comprising:
- first touch electrodes;
- scan lines connected to the first touch electrodes;
- and
- a controller that applies a scan signal to each of the scan lines,
- wherein the scan signal includes a plurality of unit signals in a first time period and a second time period, and includes a gap signal in a gap period between the first time period and the second time period, and
- an amplitude of each of the plurality of unit signals is greater than an amplitude of the gap signal,
- wherein the scan signal of a single one of the scan lines is continuously sinusoidal during a repeating sequence of the first time period, the gap period and the second time period.
4 more elements
An electronic device comprising:
- a touch sensor comprising:
- first touch electrodes;
- scan lines connected to the first touch electrodes;
- a controller that applies a scan signal to each of the scan lines,
- wherein the scan signal includes a plurality of unit signals in a first time period and a second time period, and includes a gap signal in a gap period between the first time period and the second time period, and
- an amplitude of each of the plurality of unit signals is greater than an amplitude of the gap signal;
- and
- second touch electrodes configured to form mutual capacitances with the first touch electrodes,
- wherein the controller receives sensing signals from the second touch electrodes to generate touch data,
- determines whether a first target signal among the sensing signals corresponds to one of the plurality of unit signals or to the gap signal,
- calculates an amplitude of the first target signal,
- determines that the first target signal corresponds to one of the plurality of unit signals when the amplitude of the first target signal is greater than a first reference value, and
- determines that the first target signal corresponds to the gap signal when the amplitude of the first target signal is less than or equal to the first reference value.
10 more elements
An electronic device comprising:
- a touch sensor comprising:
- first touch electrodes;
- scan lines connected to the first touch electrodes;
- a controller that applies a scan signal to each of the scan lines,
- wherein the scan signal includes a plurality of unit signals in a first time period and a second time period, and includes a gap signal in a gap period between the first time period and the second time period, and
- an amplitude of each of the plurality of unit signals is greater than an amplitude of the gap signal;
- and
- second touch electrodes configured to form mutual capacitances with the first touch electrodes,
- wherein the controller receives sensing signals from the second touch electrodes to generate touch data,
- determines whether a first target signal among the sensing signals corresponds to one of the plurality of unit signals or to the gap signal,
- calculates a frequency of the first target signal,
- determines that the first target signal corresponds to one of the plurality of unit signals when the frequency is a second reference value, and
- determines that the first target signal corresponds to the gap signal when the frequency is not the second reference value.
10 more elements
Dependencies are inferred from the claim text.