Optoelectronic circuit with a photoreceptor and a laser diode, and module comprising the same
US7957448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2008 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Jan 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0683
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The optoelectronic circuit includes a photoreceptor (1) made in a silicon semiconductor substrate (4), and a monomode VCSEL laser diode (2) made in a gallium arsenide substrate. The photoreceptor includes at least one photosensitive area with a pixel array for picking up light and an area with a control and processing unit for the signals supplied by the pixels. The laser diode is mounted and electrically connected directly on one part of the photoreceptor. The laser diode is connected by a conductive terminal (12) to a first contact pad (3) at the bottom of a cavity (13) made through a passivation layer (5) of the photoreceptor. An electrode (17) on the top of the diode is connected by a metal wire (15) to a second contact pad (3) of the photoreceptor. The photoreceptor controls the diode directly via the electrode and the conductive terminal to generate a laser beam (L).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.