Solid-state image pickup device
AssigneeSanyo Electric Co., Ltd.
InventorsTakahiko Ogo, Shinichiro Izawa, Kazutaka Itsumi
Life of this patent
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Abstract
In an image pickup portion of a frame transfer CCD image sensor, a constitution that inhibits color mixing from occurring between light-sensitive pixels adjacent along a vertical CCD shift register channel is provided. A protrusion extending on the channel is formed at a clock wiring formed on a channel stop of the vertical CCD shift register with an wiring layer having the light-shielding property. When the protrusion portion is disposed at a boundary of light-sensitive pixels in the channel, a non-light-shielding portion generated at the boundary can be suppressed. The protrusions are disposed so as to alternately protrude from the clock wirings on both sides of the channel.
Claims5
A solid-state image pickup device comprising:
- an image pickup region, where a plurality of light-sensitive pixels are arranged in a matrix;
- and a plurality of shift registers that transfer a signal charge generated for each of the light-sensitive pixels in a column direction are formed;
- wherein the shift register has
- a plurality of transfer electrodes arranged plurally in a column direction and transferring the signal charge at the shift register;
- and
- a plurality of clock wirings extended respectively in the column direction between light-sensitive pixel column and supplying each phase of a plurality of phases of transfer clocks to the transfer electrode;
- and wherein
- the clock wiring is formed of a light-shielding material and has a protrusion extending on a boundary between the light-sensitive pixels arranged in the column direction.
Dependencies are inferred from the claim text.