H - Electricity – 01 – L
Patent
H - Electricity
01
L
H01L 31/173 (2006.01)
Patent
CA 2225820
A monolithic optocoupler having a light emitting diode for emitting light, a first photodiode for producing a current based on light sensed by it, a second photodiode for producing a current based on light sensed by it and an insulator for electrically isolating the light emitting diode from the first photodiode. The insulator is substantially transparent to light emitted by the light emitting diode. The first and second photodiodes are positioned with respect to the light emitting diode such that directional non-uniformities of light emitted by the light emitting diode are compensated.
L'invention se rapporte à un photocoupleur monolithique équipé comme suit: diode luminescente émettant de la lumière, première photodiode détectrice de lumière et fournissant un courant sur la base de cette lumière, seconde photodiode détectrice de lumière et fournissant un courant sur la base de cette lumière et, enfin isolateur pour l'isolation électrique entre la diode luminescente et la première photodiode. L'isolateur est sensiblement transparent à la lumière émise par la diode luminescente. On place la première photodiode et la seconde photodiode par rapport à la diode luminescente de manière à compenser les manques d'uniformité directionnelle de la lumière émise par la diode luminescente.
Fetherstonhaugh & Co.
Siemens Microelectronics Inc.
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