Optoelectronic integrated circuit
US5357121A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1992 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Sep 15, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/73265
Abstract
An optoelectronic integrated circuit includes a light responsive element for converting an optical signal into an electrical signal and an electronic circuit for processing the electrical signal. The light responsive element is disposed on a first surface of a substrate and includes p side electrodes and n side electrodes alternatingly arranged parallel to each other. The electronic circuit is disposed on a second surface of the substrate. The light responsive element is electrically connected to the electronic circuit by a via hole penetrating the substrate. In this structure, light incident on the first surface is almost completely absorbed by the substrate and hardly reaches the electronic circuit on the second surface. Therefore, variations in operation of the electronic circuit, such as an increase in drain current, are reduced. In addition, since the degree of freedom in arranging these elements on both surfaces of the substrate is increased, high-density integration is achieved, resulting in a small-sized IC chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.