Threshold voltage shift compensated active pixel sensor array for digital X-ray imaging in a-Si technology

2005 ◽  
Vol 41 (7) ◽  
pp. 411 ◽  
Author(s):  
N. Safavian ◽  
J. Lai ◽  
J. Rowlands ◽  
A. Nathan
Keyword(s):  
Threshold Voltage ◽  
Sensor Array ◽  
Threshold Voltage Shift ◽  
Voltage Shift ◽  
Active Pixel Sensor ◽  
X Ray ◽  
X Ray Imaging ◽  
Active Pixel

scholarly journals Negative threshold voltage shift in an a-IGZO thin film transistor under X-ray irradiation

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20865-20870 ◽  
Author(s):  
Dong-Gyu Kim ◽  
Jong-Un Kim ◽  
Jun-Sun Lee ◽  
Kwon-Shik Park ◽  
Youn-Gyoung Chang ◽  
...  
Keyword(s):  
Thin Film ◽  
Threshold Voltage ◽  
Thin Film Transistor ◽  
Threshold Voltage Shift ◽  
Voltage Shift ◽  
Hydrogen Incorporation ◽  
X Ray ◽  
Spectroscopic Analyses ◽  
Bottom Gate ◽  
Igzo Tft

We studied the effect of X-ray irradiation on the negative threshold voltage shift of bottom-gate a-IGZO TFT. Based on spectroscopic analyses, we found that this behavior was caused by hydrogen incorporation and oxygen vacancy ionization.

Negative threshold voltage shift for LTPS TFTs under x-ray irradiation and gate bias

2019 ◽  
Vol 34 (9) ◽  
pp. 095012 ◽  
Author(s):  
Ya-Hsiang Tai ◽  
Shan Yeh ◽  
Po-Chun Chan ◽  
Yi-Shen Li ◽  
Shih-Hsuan Huang ◽  
...  
Keyword(s):  
Threshold Voltage ◽  
Gate Bias ◽  
Threshold Voltage Shift ◽  
Voltage Shift ◽  
X Ray

A 70μm × 70μm CMOS digital active pixel sensor for digital mammography and X-ray imaging

2011 ◽  
Vol 6 (03) ◽  
pp. C03002-C03002
Author(s):  
J Sabadell ◽  
R Figueras ◽  
J M Margarit ◽  
E Martín ◽  
L Terès ◽  
...  
Keyword(s):  
Digital Mammography ◽  
Active Pixel Sensor ◽  
X Ray ◽  
X Ray Imaging ◽  
Active Pixel

Hole based CMOS active pixel sensor for medical x-ray imaging

2011 ◽  
Author(s):  
Hoon Jang ◽  
So Eun Park ◽  
Sun Jae Hwang ◽  
Chee Hong Choi ◽  
Joon Hwang
Keyword(s):  
Active Pixel Sensor ◽  
X Ray ◽  
X Ray Imaging ◽  
Active Pixel
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