Sensor and method of operating a sensor
AssigneesTouch Biometrix Limited, Sharp Display Technology Corporation
InventorsYamamoto KAORU, Tanaka KOHEI, Toru SAKAI, Wilhelmus VAN LIER, Henricus DERCKX
Life of this patent
Estimating the term…
Abstract
A capacitive sensor comprising: a plurality of read-out lines; and an array of sensor pixels, wherein each sensor pixel is connected to a read-out line and comprises a capacitive sensing electrode; wherein the sensor is configured to: obtain, from a first read-out line, a signal indicative of a charge on the capacitive sensing electrode of at least one sensor pixel connected to said first read-out line; and maintain a second read-out line at a read-out reference voltage while obtaining said signal from the first read-out line.
Claims24
A capacitive sensor comprising:
- a plurality of read-out lines;
- and
- an array of sensor pixels, wherein each sensor pixel is connected to a read-out line and comprises a capacitive sensing electrode;
- wherein the sensor is configured to:
- obtain, from a first read-out line, a signal indicative of a charge on the capacitive sensing electrode of at least one sensor pixel connected to said first read-out line;
- and
- maintain a second read-out line at a read-out reference voltage while obtaining said signal from the first read-out line.
A capacitive sensor comprising:
- a plurality of supply lines;
- and
- an array of sensor pixels, wherein each sensor pixel is connected to a supply line and comprises a capacitive sensing electrode;
- wherein the sensor is configured to:
- obtain a signal indicative of a charge on the capacitive sensing electrode of at least one sensor pixel connected to a first supply line;
- and
- maintain a second supply line at a supply reference voltage while obtaining said signal from said at least one sensor pixel connected to the first supply line.
(canceled)
(canceled)
18-19. (canceled)
A method of operating a capacitive sensor, wherein the sensor comprises:
- (i) a plurality of read-out lines, (ii) a plurality of supply lines, and (iii) an array of sensor pixels, wherein each sensor pixel is connected to a read-out line and a supply line and comprises a capacitive sensing electrode, the method comprising:
- obtaining, from a first read-out line, a signal indicative of a charge on the capacitive sensing electrode of at least one sensor pixel connected to said first read-out line and a first supply line;
- maintaining a second read-out line at a read-out reference voltage while obtaining said signal from the first read-out line;
- and
- maintaining a second supply line at a supply reference voltage while obtaining said signal from the first read-out line.
(canceled)
Dependencies are inferred from the claim text.