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US 12,675,196 B2Granted
Touch sensor, touch detection method and display device
AssigneeLG Display Co., Ltd.
InventorJae-Hun Ye
Life of this patent
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Abstract
A touch sensor includes: a plurality of sensor elements which are arranged in a matrix shape across a first direction and a second direction crossing the first direction and are capable of transmitting and receiving ultrasonic waves; and a plurality of lines connected to the plurality of sensor elements, wherein at least one of the plurality of lines is shared by the plurality of sensor elements.
Claims27
A touch sensor comprising:
- a plurality of sensor elements that are arranged in a matrix shape across a first direction and a second direction that crosses the first direction, the plurality of sensor elements configured to transmit and receive ultrasonic waves;
- and
- a plurality of lines connected to the plurality of sensor elements,
- wherein at least one of the plurality of lines is shared by the plurality of sensor elements,
- wherein each of the plurality of sensor elements includes a vibration element that includes a first dielectric and generates the ultrasonic wave according to a driving signal, and a detection element that includes a second dielectric, detects the ultrasonic wave and outputs a detection signal, and
- wherein the first dielectric is separated from the second dielectric with a first insulating layer disposed between the first dielectric and the second dielectric.
3 more elements
A touch sensor comprising:
- M×N sensor elements each of which includes a vibration element that includes a first dielectric and generates an ultrasonic wave and a detection element that includes a second dielectric and detects the ultrasonic wave;
- M transmission lines that extend in a first direction, each of the M transmission lines connected to N vibration elements;
- and
- N reception lines that extend in a second direction crossing the first direction, each of the N reception lines connected to M detection elements,
- wherein the first dielectric is separated from the second dielectric with a first insulating layer disposed between the first dielectric and the second dielectric.
2 more elements
A touch detection method, comprising:
- generating ultrasonic waves from a plurality of sensor elements that are arranged in a matrix shape across a first direction and a second direction that crosses the first direction;
- and
- receiving the ultrasonic waves in the plurality of sensor elements,
- wherein the plurality of sensor elements are connected to a plurality of lines,
- wherein at least one of the plurality of lines is shared by the plurality of sensor elements,
- wherein each of the plurality of sensor elements includes a vibration element that includes a first dielectric and generates the ultrasonic wave according to a driving signal, and a detection element that includes a second dielectric, detects the ultrasonic wave and outputs a detection signal, and
- wherein the first dielectric is separated from the second dielectric with a first insulating layer disposed between the first dielectric and the second dielectric.
4 more elements
Dependencies are inferred from the claim text.