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US 10,474,300 B2Granted
Display device
AssigneeSamsung Display Co., Ltd.
InventorKyungha Moon
Life of this patent
Estimating the term…
Abstract
A touch sensing unit includes a touch sensor, a sensor line, a piezoelectric area, and a touch sensor controller. The touch sensor is arranged in an island shape. The sensor line is connected to the touch sensor. The piezoelectric area overlaps the touch sensor and is arranged in an island shape. The touch sensor controller receives a voltage from the piezoelectric area when the piezoelectric area receives pressure and determines a magnitude of the pressure based on the voltage.
Claims20
A touch sensing unit, comprising:
- a substrate;
- a touch sensor on the substrate and arranged in a first island shape, the touch sensor providing a first signal indicating a change in self-capacitance of the touch sensor;
- a sensor line connected to the touch sensor;
- a pressure sensor including a piezoelectric material overlapping and electrically connected to the touch sensor and arranged in a second island shape, the pressure sensor providing a second signal indicating a voltage from the piezoelectric material;
- and
- a touch sensor controller to receive, through the sensor line, the first signal from the touch sensor, and to receive, through the touch sensor and the sensor line, the voltage from the piezoelectric material when the piezoelectric material receives pressure and to determine a magnitude of the pressure based on the voltage.
3 more elements
A touch sensing unit, comprising:
- a substrate;
- a touch sensor on the substrate and including a transmit electrode and a receive electrode, the touch sensor providing a first signal indicating a change in mutual-capacitance between the transmit electrode and the receive electrode;
- a sensor line connected to the receive electrode;
- a pressure sensor including a piezoelectric material overlapping and electrically connected to the receive electrode and arranged in an island shape, the pressure sensor providing a second signal indicating a voltage from the piezoelectric material;
- and
- a touch sensor controller to receive, through the receive electrode and the sensor line, the first signal, and to receive, through the receive electrode and the sensor line, the voltage generated by the piezoelectric material when pressure is applied to the piezoelectric material and to determine a magnitude of the pressure.
3 more elements
Dependencies are inferred from the claim text.