H - Electricity – 01 – L
Patent
H - Electricity
01
L
345/1, 345/26, 3
H01L 27/14 (2006.01) H01L 27/146 (2006.01)
Patent
CA 1282172
ABSTRACT A photoelectric conversion device is provided including a plurality of phototransistors having a control electrode region of first conductivity type semiconductor for storing photo-excited carrier. The phototransistors also have at least two of first semiconductor region of second conductivity type different from the first one, second semiconductor region of the second conductivity type, and third semiconductor region of the second conductivity type. The device includes a signal read out connected electrically to each second semiconductor region, for reading an output signal based on the carrier stored on the control electrode region of the corresponding phototransistor. A peak signal reading means electrically connected to each of said third semiconductor region is provided for reading a peak output signal at each photo- transistor on the basis of carrier stored in the control electrode region of each phototransistor. The device accordingly can read light information from a semiconductor region separately from the electrode region. The device can for example measure the incident light quantity or detect a peak value carried out in parallel as a store or read operation resulting in a high speed operation of the device. Further use of a circuit for processing light information based on a detected value enables a stable reading of the light information and a simplified design of a signal processing circuit at the following stage.
522798
Sugawa Shigetoshi
Suzuki Toshiji
Tanaka Nobuyoshi
Canon Kabushiki Kaisha
Ridout & Maybee Llp
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