Contact type image sensor device with specific capacitance ratio
US5004903A · kind A · utility
9Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1990 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Apr 2, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/18
Abstract
A contact type image sensor device comprises a plurality of photodiodes connected in a matrix, and an equal number of blocking diodes. A capacity ratio of a photo electric part constituting the photodiodes to a diode part constituting the blocking diode is in the range of 2:1 to 30:1. Dynamic range, magnitude of the signal current, light sensitivity and after image characteristics of the image sensor are improved according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.