UBM TechInsights is offering for sale a portfolio of 198 ON Semiconductor patents, originally patented by Sanyo. Out of the 60 US patents in this portfolio, 18 are devoted to CCDs:
"Lot #2 includes Image sensors (CCD), sensor power saving, signal processing crosstalk suppression, as well as a patent on using an LCD as a controllable lens cover. The fabrication patents relate to supplying power to a CCD cell using silicide lines, fabricating photo diodes with improved sensitivity, forming micro-lenses over the pixel array, and using dummy metal traces to reflect light into corresponding pixels."
Some of them are commented by Techinsights in the presentation document I received by email:
Whoever is interested can inquire UBM Techinsights (contact emails are available on request).