Abstract: A method of making an imager which includes substrate of single crystalline silicon having on one surface of a plurality of spaced detectors arranged in columns and a charge-coupled device between each pair of columns of the detectors. The charge-coupled devices are formed first with the gates of the charge-coupled devices defining detector areas of the substrate surface. A guard-ring is formed in each detector area with the edges of the gates around the detector area defining one edge of the guard-ring so that the guard-rings are aligned with the edges of the surrounding gates. A layer of insulating material is formed over the detector areas with the portion of the insulating layer over the guard-ring being thicker than the remaining portion of the insulating layer. The thinner portion of the insulating layer is removed leaving the thicker portion over the guard-ring region and with an edge of the thicker portion being substantially in alignment with an edge of the guard-ring region.

Abstract: Improved conductor inks useful in constructing multilayer circuits, particularly on porcelain-coated metal substrates, are provided. The subject inks comprise: copper powder, a barium calcium borosilicate glass frit, a suitable organic vehicle and bismuth oxide, which is present either in admixture with the copper powder or as a component of the glass frit.