Multiplication register for amplifying signal charge
US7619201B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2005 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Apr 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/225
Abstract
A multiplication register for use in solid state imaging apparatus, such as a CCD, is described. The multiplication register has a gain element 22 comprising a plurality of register electrodes 30, 32, 34, and 36, for transferring charge along a change transfer channel, and for amplifying the charge. Channel edge defining electrodes 24 and 26 are disposed either side of the channel 28, in place of channel stops, removing the effects of spurious charges generated in the channel in the regions of amplification. The provision of the channel edge defining electrodes 24 and 26 allows the resulting structure of the channel electrodes to be made simpler, and means that a structure can be provided for clocking and amplifying charge in either direction along the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.