IMAGING ELEMENT AND DEVICE FOR IMAGING ELEMENT EMPLOYING IT

In a CCD type solid-state image sensor (CCD) of this invention, a potential gradient is provided in which potentials about electric signals gradually change from a photodiode toward a gate electrode. Specifically, impurities forming the photodiode are diffused in the shape of character "X"...

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Bibliographic Details
Main Author SOYA, HIDEKI
Format Patent
LanguageEnglish
French
German
Published 20.12.2006
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
SEMICONDUCTOR DEVICES
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Summary:In a CCD type solid-state image sensor (CCD) of this invention, a potential gradient is provided in which potentials about electric signals gradually change from a photodiode toward a gate electrode. Specifically, impurities forming the photodiode are diffused in the shape of character "X", and the width of the impurities is enlarged gradually from the photodiode toward the gate electrode. With such a gradient, the electric signals are smoothly transferred along the potential gradient, without the electric signals stagnating in movement from the photodiode to the gate electrode. As a result, the electric signals can be transferred at high speed from the photodiode to the gate electrode.
Bibliography:Application Number: EP20050727856