Stacked optocoupler component

Patent metadata

Field	Value
Publication number	US-2016308085-A1
Application number	US-201615131121-A
Country	US
Kind code	A1
Filing date	Apr 18, 2016
Priority date	Apr 17, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

A stacked optocoupler component, having a transmitter component with a transmitting area and a receiver component with a receiving area and a plate-shaped electrical isolator. The isolator is formed between the transmitter component and the receiver component, and the transmitter component and the receiver component and the isolator are arranged one on top of another in the form of a stack. The transmitter component and the receiver component are galvanically separated from one another but optically coupled to one another. The isolator is transparent for the emission wavelengths of the transmitter component and the centroidal axis of the transmitting area and the centroidal axis of the receiving area are substantially or precisely parallel to one another.

First claim

What is claimed is:

1 . A stacked optocoupler component comprising:
a transmitter component with a transmitting area, the transmitting area having a surface; a receiver component with a receiving area, the receiving area having a surface; an electrical isolator that is plate-shaped, the electrical isolator being formed between the transmitter component and the receiver component, and the transmitter component and receiver component and the electrical isolator being arranged one on top of another in a form of a stack, wherein the transmitter component and receiver component are galvanically separated from one another but optically coupled to one another, wherein the electrical isolator is transparent at least for a part of an emission wavelength of the transmitting area, wherein a centroidal axis of the surface of the transmitting area and a centroidal axis of the surface of the receiving area are substantially parallel to one another, wherein an offset between the two centroidal axes is less than half or less than a tenth or less than a fiftieth of a distance of the particular centroidal axis to an outer edge of the surface of the transmitting area or to an outer edge of the surface of the receiving area so that light of the transmitter component acts predominantly or solely through the electrical isolator on the receiving area, wherein the electrical isolator projects on all sides from the stack in the form of a balcony, wherein the receiver component has a number N of partial voltage sources connected in series to one another, N being a natural number and ≧2, wherein a deviation of the partial voltages of the individual partial voltage sources from one another is less than 20%, wherein each partial voltage source has a semiconductor diode with a p-n junction, wherein a tunnel diode is formed between each of two successive partial voltage sources, and wherein the partial voltage sources and the tunnel diodes are monolithically integrated together.

2 . The integrated optocoupler according to claim 1 , wherein a difference between a size of the surface of the transmitting area and a size of the surface of the receiving area is less than 20%.

3 . The integrated optocoupler according to claim 1 , wherein the surface of the transmitting area and the surface of the receiving area have a rectangular shape and a largest edge length of the rectangle is less than 2 mm.

4 . The integrated optocoupler according to claim 1 , wherein the stack comprising the transmitter component and the isolator and the receiver component is integrated into a mutual package.

5 . The integrated optocoupler according to claim 1 , wherein the surface of the transmitting area and the surface of the receiving area are substantially equal in size and wherein, with the exception of the electrical connecting areas, the transmitting area emits light and the receiving area absorbs light.

6 . The integrated optocoupler according to claim 1 , wherein the surface of the transmitting area and the surface of the receiving area are square and each has a base area larger than 0.2×0.2 mm 2 and smaller than 4 mm 2 or smaller than 1 mm 2 .

7 . The integrated optocoupler according to claim 1 , wherein the transmitter component has an optical mirror for the wavelength of the transmitter or an RCLED or a surface-emitting laser.

8 . The integrated optocoupler according to claim 1 , wherein the plate-shaped isolator is formed of plastic and/or of glass and/or of aluminum dioxide and/or of epoxy resin and/or of silicone.

9 . The integrated optocoupler according to claim 1 , wherein the isolator projects on all sides from the stack by at least 5 μm.

10 . The integrated optocoupler according to claim 1 , wherein the thickness of the isolator is less than 0.5 mm but at least 50 μm.

11 . The integrated optocoupler according to claim 1 , wherein the emission wavelength of the transmitting area is substantially the same or at most 10% lower than the absorption edge of the receiver area.

12 . The integrated optocoupler according to claim 1 , wherein the transmitter component and receiver component are made of a III-V material.

13 . The integrated optocoupler according to claim 1 , wherein the receiver component comprises a GaAs and/or a Ge substrate.

14 . The integrated optocoupler according to claim 1 , wherein the receiver component comprises an (Al)GaAs and/or an InGaP and/or an InGaAs material.

15 . The integrated optocoupler according to claim 1 , wherein the receiver component and transmitter component have a truncated pyramidal design along the stack direction, and wherein the difference between the surface area of the bottom side of the truncated pyramid and the top side of the truncated pyramid is at least 5 μm 2 .

16 . The integrated optocoupler according to claim 1 , wherein the surface of the transmitting area is arranged directly on the top side of the isolator and the surface of the receiving area directly on the bottom side of the isolator so that the surface of the transmitting area and the surface of the receiving area face one another.

17 . The integrated optocoupler according to claim 1 , wherein the transmitter component has a substrate layer and the substrate layer is arranged on the top side of the isolator and the receiver component has a substrate layer and the substrate layer is arranged on the bottom side of the isolator, so that the two substrate layers face one another directly.

Assignees

• Azur Space Solar Power Gmbh

Inventors

• Guter Wolfgang
• Fuhrmann Daniel
• WAECHTER Clemens

Classifications

• H10W90/00

  Package configurations · CPC title

• H01S5/3013

  AIIIBV compounds · CPC title

• Y02E10/544

  Solar cells from Group III-V materials · CPC title

• H03K17/78

  using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled · CPC title

• H10D84/221

  of only diodes · CPC title