Intercolor-Filter Crosstalk Model for Image Sensors With Color Filter Array

被引：3

作者：

Yamashita, Yuichiro ^{[1
]}

Sugawa, Shigetoshi ^{[2
]}

机构：

[1] Taiwan Semicond Mfg Co Ltd, Hsinchu 30075, Taiwan

[2] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2018年 / 65卷 / 06期

关键词：

Buried color filter array (BCFA); color filter (CF); electrical crosstalk; image sensors; inter-CF crosstalk; isolated CF (ICF); microlens (ML); optical crosstalk;

D O I：

10.1109/TED.2018.2828861

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A color crosstalk model for an area image sensor with a color filter (CF) array is proposed, which quantifies the crosstalk in a physically intuitive manner by introducing "inter-CF optical crosstalk (inter-CF crosstalk)." The model separates the structural design originated crosstalk from the CF material itself, revealing the sole characteristics of microstructures on a photo diode. A constrained nonlinear estimation is used to solve the model equation of system matrices with an objective function focusing on matching between the modeled quantum efficiency spectra and measured ones at both the peak and crosstalk regions. The model is applied to 1.1-mu m backside illuminated CMOS image sensors having four different kinds of optical structures on the photodiode of the same design, and successfully provides the ground of comparison with excellent matching between the models and the measurement results.

引用

页码：2531 / 2536

页数：6

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