Interposer and chip-scale packaging for wafer-level camera
US10734437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2019 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Feb 4, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
Abstract
A chip-scale packaging process for wafer-level camera manufacture includes aligning an optics component wafer with an interposer wafer having a photoresist pattern that forms a plurality of transparent regions, bonding the aligned optics component wafer to the interposer wafer, and dicing the bonded optics component wafer and interposer wafer such that each optics component with interposer has a transparent region. The process further includes dicing an image sensor wafer, aligning the pixel array of each image sensor with the transparent region of a respective optics component with interposer, and bonding each image sensor to its respective optics component with interposer. Each interposer provides alignment between its respective optics component center and its respective pixel array center of the image sensor based on the respective transparent region. The interposer further provides a back focal length for focusing light from the optics component onto a top surface of the pixel array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.