Photosensitive ring oscillator preparation method and artificial retina thereof
AssigneeInstitute of Physics, Chinese Academy of Sciences
InventorsGuangyu ZHANG, Na LI, Congli HE, Dongxia SHI
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Abstract
The present invention relates to a photosensitive ring oscillator, its preparation method, and a flexible artificial retina. Specifically, the photosensitive ring oscillators (PROs) based on 2D semiconducting materials have been fabricated on flexible biological compatible substrates, which transduces light information into electrical pulse signals directly, propagating through the optic nerve. The output oscillating frequency varies quasi-linearly with the change of light intensity. The flexible electronic devices can be used as implantable biomimetic retina for artificial vision to recover the sight sense for sight-handicapped people.
Claims15
A photosensitive ring oscillator, characterized in that, the photosensitive ring oscillator comprises a phototransistor, fabricated by odd-numbered inverters connected in series with one additional inverter as the output buffer;
- wherein the phototransistor comprises the following elements set in sequence form top to bottom:
- a flexible substrate;
- a gate electrode;
- a dielectric layer;
- a channel layer;
- and
- a contact electrode.
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Dependencies are inferred from the claim text.