Integrated circuit packaging for optical sensor devices
US6396116B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2000 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Feb 25, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/16195
Abstract
An optical device packaging technique involves an optical sensor that is formed on a first substrate and flip chip bonded to a second substrate. The second substrate includes a through hole or a transparent section that is aligned with the optical sensor in order to allow light to contact the optical sensor. An embodiment of an optical device structure includes an optical sensor, a first substrate, a second substrate, and a circuit board. The optical sensor is formed on or within the first substrate and the individual sensors or pixels of the optical sensor are electrically connected to contact pads that are exposed on the first substrate. The first substrate is flip chip bonded to the second substrate. The second substrate is flip chip bonded to a circuit board. Another embodiment of an optical device structure includes an optical sensor, a first substrate, and a circuit board as the second substrate. In the embodiment, contact pads of the first substrate are flip chip bonded to contact pads of the circuit board with conductive balls. The connection between the first substrate and the circuit board provides the electrical connection between the optical sensor and the circuit board…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.