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US 12,720,882 B2Granted
Optical detection device including initialization circuit configured to improve detection accuracy
AssigneeMagnolia White Corporation
InventorsTadayoshi Katsuta, Yoshitaka Ozeki
Life of this patent
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Abstract
A detection device includes a plurality of detection elements that are arranged in a matrix having a row-column configuration in a detection area, and each comprise a photoelectric conversion element to which a reverse bias voltage is configured to be applied when detection is performed, and an initialization circuit configured to apply an initialization voltage higher than the reverse bias voltage to the photoelectric conversion element before the reverse bias voltage is applied to the photoelectric conversion element.
Claims5
A detection device comprising:
- a plurality of detection elements that are arranged in a matrix having a row-column configuration in a detection area, each of the plurality of detection elements comprising a photoelectric conversion element to which a reverse bias voltage is configured to be applied to detect light irradiating the detection area;
- and
- an initialization circuit configured to apply an initialization voltage higher than the reverse bias voltage to a respective photoelectric conversion element before the reverse bias voltage is applied to the respective photoelectric conversion element.
A detection device comprising:
- a plurality of detection elements that are arranged in a matrix having a row-column configuration in a detection area, each of the plurality of detection elements comprising a photoelectric conversion element to which a reverse bias voltage is configured to be applied to detect light irradiating the detection area;
- and
- an initialization circuit configured to initialize the plurality of detection elements, wherein
- the initialization circuit comprises:
- first wiring configured to supply the reverse bias voltage to a respective photoelectric conversion element;
- second wiring configured to supply an initialization voltage higher the reverse bias voltage to the respective photoelectric conversion element;
- and
- a switch circuit configured to couple one of the first wiring and the second wiring to the plurality of detection elements.
5 more elements
Dependencies are inferred from the claim text.