Optical semiconductor device
AssigneeSony Corporation
InventorsToyoharu Ohata, Kazuhiko Nemoto, Masamichi Ogawa
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Abstract
An optical semiconductor device in which both of positive input and negative input are possible is disclosed. In the optical semiconductor device, two heterojunction phototransistors are connected in parallel of each other to the cathode of a laser diode. An optical memory in which setting, i.e., writing and resetting, i.e., erasing by light are possible is also disclosed. In the optical memory, two heterojunction phototransistors are connected in parallel of each other to the cathode of a laser diode to make a memory cell.
Claims14
An optical semiconductor device, comprising:
- a light emitting element;
- a first phototransistor;
- and
- a second phototransistor;
- said first and second phototransistors being connected in parallel to each other and connected to one end of said light emitting element.
An optical semiconductor device comprising:
- a light emitting element;
- a first phototransistor;
- and
- a second phototransistor,
- said light emitting element and at least one of said first and second phototransistors being stacked, and
- said first and second phototransistors being connected in parallel with each other to one end of said light emitting element.
Dependencies are inferred from the claim text.