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US 12,223,763 B2Granted
Detection device
AssigneeJapan Display Inc.
InventorsGen Koide, Keiichi Saito, Takashi Nakamura
Life of this patent
Estimating the term…
Abstract
According to an aspect, a detection device including a plurality of optical sensors arranged in a matrix having a row-column configuration, the detection device being configured to: detect a signal that is output from each of the optical sensors by reverse-biasing the optical sensor, and perform a refreshing operation to restore characteristics of the optical sensor to an initial state by forward-biasing the optical sensor for each predetermined period.
Claims23
A detection device comprising:
- a plurality of optical sensors arranged in a matrix having a row-column configuration;
- a first gate line drive circuit configured to supply a gate drive signal to the optical sensors arranged in a row direction;
- a second gate line drive circuit configured to supply a refreshing signal to supply a forward bias potential to the optical sensors arranged in the row direction during a refreshing period in which a refreshing operation is performed;
- a reset circuit configured to supply a reference potential to reverse-bias the optical sensors arranged in a column direction;
- and
- a detection circuit configured to be supplied with a signal from each of the optical sensors arranged in the column direction,
- wherein
- each of the optical sensors is configured to be switchable alternately between a reverse-bias state and a forward-bias state, and
- the detection device is configured to:
- detect the signal that is output from each of the optical sensors by reverse-biasing the optical sensor,
- perform the refreshing operation to restore characteristics of the optical sensor to an initial state by forward-biasing the optical sensor for each predetermined period, and
- switch the optical sensor from the reverse-bias state to the forward-bias state at predetermined intervals to perform the refreshing operation.
9 more elements
A detection device comprising:
- a plurality of optical sensors arranged in a matrix having a row-column configuration;
- a first gate line drive circuit configured to supply a gate drive signal to the optical sensors arranged in a row direction;
- a second gate line drive circuit configured to supply a refreshing signal to supply a forward bias potential to the optical sensors arranged in the row direction;
- and
- a detection circuit configured to be supplied with the signal from each of the optical sensors arranged in the column direction, wherein
- the detection device is configured to:
- detect a signal that is output from each of the optical sensors by reverse-biasing the optical sensor,
- perform a refreshing operation to restore characteristics of the optical sensor to an initial state by forward-biasing the optical sensor for each predetermined period, and
- supply a reference potential to reverse-bias the optical sensors during a refreshing period in which the refreshing operation is performed.
6 more elements
A detection device comprising a plurality of optical sensors arranged in a matrix having a row-column configuration, wherein
- the detection device is configured to:
- detect a signal that is output from each of the optical sensors by reverse-biasing the optical sensor, and
- perform a refreshing operation to restore characteristics of the optical sensor to an initial state by forward-biasing the optical sensor for each predetermined period, and
- the detection device further comprises:
- a gate line drive circuit configured to supply a gate drive signal to the optical sensors arranged in a row direction;
- a first reset circuit configured to supply a reference potential to reverse-bias the optical sensors arranged in a column direction;
- a second reset circuit configured to supply a refreshing potential to forward-bias the optical sensors arranged in the row direction during a refreshing period in which the refreshing operation is performed;
- and
- a detection circuit configured to be supplied with the signal from each of the optical sensors arranged in the column direction.
6 more elements
A detection device comprising a plurality of optical sensors arranged in a matrix having a row-column configuration, wherein
- the detection device is configured to:
- detect a signal that is output from each of the optical sensors by reverse-biasing the optical sensor, and
- perform a refreshing operation to restore characteristics of the optical sensor to an initial state by forward-biasing the optical sensor for each predetermined period, and
- the detection device further comprises:
- a gate line drive circuit configured to supply a gate drive signal to the optical sensors arranged in a row direction;
- a reset circuit configured to supply a reference potential to reverse-bias the optical sensors arranged in a column direction;
- a power supply circuit configured to supply a refreshing potential to forward-bias the optical sensors during a refreshing period in which the refreshing operation is performed;
- and
- a detection circuit configured to be supplied with the signal from each of the optical sensors arranged in the column direction.
6 more elements
Dependencies are inferred from the claim text.