Solid state image sensing device

Claim 1

A solid state imager comprising; a photosensing section in which an amplifying element is provided at every pixel of a plurality of pixels arrayed in the horizontal and vertical directions in a two-dimensional matrix configuration for amplifying a signal charge stored in response to incident light formed on the surface of a substrate, a plurality of vertical lines connected to the corresponding ones of said pixels: a noise canceling means connected to each of said vertical lines for canceling noise; a signal holding means connected to each of said vertical lines for holding an amplified output supplied thereto through said noise canceling means from each of said pixels in the horizontal direction during the blanking period; and a signal read-out means for reading out an output of said signal holding means to a horizontal output stage through separate switching means and separate buffer means during the horizontal scanning period, wherein said separate buffer means is comprised of a plurality of field-effect transistors of source-follower configuration in one-to-one correspondence with the respective vertical lines, and any one of said plurality of field-effect transistors is sequentially selected during the horizontal scanning period and wherein a horizontal scanning pulse causes simultaneous selection of one of said transistors and turning of an adjacent transistor.