CROSS TALK REDUCTION FOR HIGH DYNAMIC RANGE IMAGE SENSORS

The invention relates to cross talk reduction for high dynamic range image sensors. A multi-color HDR image sensor includes at least a first combination color pixel with a first color filter and an adjacent second combination color pixel with a second color filter which is different from the first c...

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Bibliographic Details
Main Authors WATANABE KAZUFUMI, HSIUNG CHIH-WEI, TAI DYSON HSINIH, GRANT LINDSAY
Format Patent
LanguageChinese
English
Published 23.10.2018
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:The invention relates to cross talk reduction for high dynamic range image sensors. A multi-color HDR image sensor includes at least a first combination color pixel with a first color filter and an adjacent second combination color pixel with a second color filter which is different from the first color filter, wherein each combination color pixel includes at least two sub-pixels having at least two adjacent photodiodes. Within each combination color pixel, there is a dielectric deep trench isolation (d-DTI) structure to isolate the two adjacent photodiodes of the two adjacent sub-pixels withsame color filters in order to prevent the electrical cross talk. Between two adjacent combination color pixels with different color filters, there is a hybrid deep trench isolation (h-DTI) structureto isolate two adjacent photodiodes of two adjacent sub-pixels with different color filters in order to prevent both optical and electrical cross talk. Each combination color pixel is enclosed on allsides by the hybrid deep tr
Bibliography:Application Number: CN201810121152