Saw-CTD parallel to serial imager
US4611140A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1985 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Aug 26, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02976
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A line imager comprising: a semiconductor body; a planar, transparent piezoelectric body having a main surface overlying and in proximity to the semiconductor body; wave propagation means for propagating acoustic waves on the main surface of the piezoelectric body to create traveling potential wells in the underlying semiconductor body; a traveling potential well path located in the semiconductor, the traveling potential well path beginning at the wave propogation means and extending straight away therefrom; semiconductor depletion means for depleting the semiconductor of majority charge carriers along the traveling potential well path, the depletion means located atop the piezoelectric body; a gate located on the semiconductor body and alongside and parallel to the traveling potential well path and adjoining the semiconductor depletion means; a plurality of sensor pixels for accumulating charge, the sensor pixels located in the semiconductor body, the pixels aligned next to each other and running parallel to, alongside and overlapping the gate so the integrated charge in each sensor pixel will proceed into their respective traveling potential wells when the potential across the ga…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.