Patent ID: 6842192
Filing Date: 2005-01-11
Classification: H01L,H04N

Abstract:
1. A solid-state image pickup device, comprising: a pixel portion having unit pixels arranged two-dimensionally in a matrix form, each of said unit pixels including a photoelectrically transducing element for photoelectrically transducing incident light to obtain a signal charge, and stocking the signal charge thus obtained, a selection switch for selecting one of the pixels, and a read-out switch for reading out the signal charge from said photoelectrically transducing element to one of a plurality of vertical signal lines; a plurality of amplifying means, at least one of the amplifying means being connected to each of said respective vertical signal lines and for converting the signal charge read out to the vertical signal lines to an electrical signal; and a plurality of reset means for resetting each of said vertical signal lines; wherein each of said selection switch and said read-out switch comprises a MOS transistor having a double gate structure, wherein each gate electrode of said selection switch and said read-out switch comprises a two-layer gate electrode, and neighboring portions are overlapped with each other, and wherein the gate electrode of one of the selection switch and the read-out switch is connected to one of a plurality of vertical scan lines and the gate electrode of the other of the selection switch and the read-out switch is connected to one of a plurality of read-out pulse horizontal signal lines.