Sensor device and driving method thereof
AssigneeSamsung Display Co., Ltd.
InventorsHyung Gun MA, Sang Hyun Heo, Moon Jae Jeong
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Abstract
A sensor device of the present invention includes first sensors receiving a plurality of driving signals; second sensors outputting a plurality of sensing signals in response to the driving signals; and a sensor receiver connected receiving the sensing signals from the second sensors, and including a band pass filter filtering the sensing signals. The band pass filter includes a multi-path filter in which a frequency of the driving signals is set as a center frequency; a gain amplifier amplifying signals filtered through the multi-path filter according to a predetermined gain value; and a buffer isolating the multi-path filter and the gain amplifier from each other.
Claims23
A sensor device comprising:
- a plurality of first sensors receiving a plurality of driving signals;
- a plurality of second sensors outputting a plurality of sensing signals in response to the driving signals;
- and
- a sensor receiver receiving the sensing signals from the second sensors, and including a band pass filter filtering the sensing signals,
- wherein the band pass filter includes:
- a multi-path filter in which a frequency of the driving signals is set as a center frequency;
- a gain amplifier amplifying signals filtered through the multi-path filter according to a predetermined gain value;
- and
- a buffer isolating the multi-path filter and the gain amplifier from each other.
A driving method of a sensor device comprising:
- supplying driving signals to a plurality of first sensors;
- receiving sensing signals from two adjacent second sensors;
- amplifying a difference between the sensing signals to generate an amplified signal;
- and
- filtering the amplified signal through a band pass filter,
- wherein the band pass filter includes:
- a multi-path filter in which a frequency of the driving signals is set as a center frequency;
- a gain amplifier amplifying signals filtered through the multi-path filter according to a predetermined gain value;
- and
- a buffer isolating the multi-path filter and the gain amplifier from each other.
A sensor device comprising:
- a plurality of first sensors receiving a plurality of driving signals;
- a plurality of second sensors outputting a plurality of sensing signals in response to the driving signals;
- and
- a sensor receiver receiving the sensing signals from the second sensors, and including a band pass filter filtering the sensing signals,
- wherein the band pass filter includes:
- a multi-path filter filtering at a frequency of the driving signals;
- a differential difference amplifier receiving an output of the multi-path filter;
- and
- a gain amplifier amplifying signals output by the differential difference amplifier.
Dependencies are inferred from the claim text.