P‐23: A Monolithically Integrated Artificial Compound Eye for Proximity Pattern Recognition

A biomimetic artificial compound eye is constructed as an array of pixels each consisting of in‐pixel circuits made of several metal‐oxide thin‐film transistors, a hydrogenated amorphous silicon photodiode and a structured optical path. An in‐pixel amplifier is incorporated to enhance the signal‐to‐...

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Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2022-06, Vol.53 (1), p.1122-1125
Main Authors: Zhou, Zhichao, Hu, Yushen, Shi, Runxiao, Wang, Sisi, Xia, Zhihe, Wong, Man
Format: Article
Language:English
Subjects:
Amorphous silicon
Artificial compound eye
Artificial neural networks
Biomimetic materials
Pattern recognition
Photodiodes
Pixels
Proximity gesture recognition
Semiconductor devices
Separation
Substrates
Thin film transistors
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Summary:A biomimetic artificial compound eye is constructed as an array of pixels each consisting of in‐pixel circuits made of several metal‐oxide thin‐film transistors, a hydrogenated amorphous silicon photodiode and a structured optical path. An in‐pixel amplifier is incorporated to enhance the signal‐to‐noise ratio. The peak fabrication temperature of 300 �C is compatible with flexible substrates. Using an artificial neural network implementation, the compound eye has been trained for proximity pattern recognition at a separation of 12 mm and achieving an inference accuracy of 95%. Sensing at a larger separation is being implemented by re‐designing the optical path, leading to potential recognition of dynamic gestures.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.15698