IMAGE SENSOR HAVING DIFFERENT SUBSTRATE BIAS VOLTAGES

An image sensor having different bias voltages is provided. The image sensor may include a plurality of pixels configured to output pixel signals based on a received optical signal, and logic circuits configured to output the pixels signals as image data. The pixels may be formed on a first region o...

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Bibliographic Details
Main Authors LIM Moo-sup, KIM Seung-sik, LEE Ji-won
Format Patent
LanguageEnglish
Published 25.08.2016
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:An image sensor having different bias voltages is provided. The image sensor may include a plurality of pixels configured to output pixel signals based on a received optical signal, and logic circuits configured to output the pixels signals as image data. The pixels may be formed on a first region of a semiconductor substrate, the first region being substrate biased to a first voltage. The logic circuits may be formed on a second region of the semiconductor substrate different from the first region, the second region being substrate biased to a second voltage different from the first voltage. A full-well capacitance (FWC) of the photodiode may be increased by applying the first voltage, which is a negative (−) voltage, to a photodiode of a pixel to reduce (or, alternatively prevent) a blooming effect.
Bibliography:Application Number: US201614989055