18341850. PHOTOELECTRIC CONVERSION APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)

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PHOTOELECTRIC CONVERSION APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

MAHITO Shinohara of Tokyo (JP)

PHOTOELECTRIC CONVERSION APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18341850 titled 'PHOTOELECTRIC CONVERSION APPARATUS

Simplified Explanation

The patent application describes a photoelectric conversion apparatus that consists of multiple pixels. Each pixel includes an avalanche photodiode, a first transistor, and a holding circuit.

  • The avalanche photodiode is positioned between a first and second potential supply line.
  • The first transistor forms a current path between the first potential supply line and the avalanche photodiode.
  • The holding circuit is designed to hold a second potential that corresponds to the first potential of an electrode of the avalanche photodiode connected to the first transistor.
  • The holding circuit supplies the second potential to the gate of the first transistor.

Potential Applications:

  • Image sensors in digital cameras and smartphones.
  • Optical communication systems.
  • Medical imaging devices.
  • Scientific research equipment.

Problems Solved:

  • Efficiently converting light into electrical signals.
  • Reducing noise and improving signal quality.
  • Ensuring accurate and reliable detection of light.

Benefits:

  • Higher sensitivity and improved performance in low-light conditions.
  • Enhanced signal-to-noise ratio.
  • Increased dynamic range.
  • More accurate and precise detection of light.
  • Lower power consumption.


Original Abstract Submitted

A photoelectric conversion apparatus in which a plurality of pixels are arranged is provided. Each of the plurality of pixels includes an avalanche photodiode arranged between a first potential supply line and a second potential supply line, a first transistor arranged so as to form a current path between the first potential supply line and the avalanche photodiode, and a holding circuit configured to, when avalanche breakdown of the avalanche photodiode has occurred, hold a second potential corresponding a first potential of an electrode of the avalanche photodiode connected to the first transistor. The second potential is supplied to a gate of the first transistor from the holding circuit.

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