What is Backside illumination (BSI)?

An image sensor structure in which light enters from the back of the substrate, where there is no wiring. Light is not blocked by wiring, so sensitivity stays high even with small pixels.

Field: Image sensors and optical devices

Questions that mention Backside illumination (BSI) (1)

  1. What is the main advantage of a backside-illuminated (BSI) CMOS image sensor?

Related terms

CMOS image sensor Photodiode Bayer pattern CCD image sensor Correlated double sampling (CDS) Dark current Fixed-pattern noise Full-well capacity Global shutter Microlens

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