Title :
An image lag free CMOS image sensor with Constant-Residue Reset
Author :
Yeh, Shang-Fu ; Hsieh, Chih-Cheng ; Chiu, Chin-Fong ; Tsai, Hann-Huei
Author_Institution :
Inst. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
A lag-free CMOS image sensor (CIS) with Constant-Residue Reset (CRR) operation is presented in this paper. It effectively eliminates image lag effect caused by the channel doping profile variation of transfer transistor and non-optimized pixel layout in the 4T-pixel. A prototype 160×120 CMOS imager has been designed and fabricated in 0.18um 1P4M CIS process. The experimental results demonstrated that the image lag effect is fully eliminated by CRR operation.
Keywords :
CMOS image sensors; CIS 1P4M process; CRR operation; constant-residue reset operation; image lag free CMOS image sensor; size 0.18 mum; CMOS image sensors; CMOS integrated circuits; Light emitting diodes; Noise; Photodiodes; Pixel; Transistors;
Conference_Titel :
VLSI Design, Automation and Test (VLSI-DAT), 2011 International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4244-8500-0
DOI :
10.1109/VDAT.2011.5783628
