Imaging device and electronic device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorTakayuki IKEDA
Life of this patent
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Abstract
An imaging device that generates a pulse signal by utilizing photoelectric conversion operation is provided. A data potential generated by the photoelectric conversion operation is input to a pulse generation circuit to output a pulse signal having a spike waveform. In addition, a structure in which product-sum operation of pulse signals is performed is provided, and digital data is generated from a new pulse signal. The digital data is taken into a neural network or the like, whereby processing such as image recognition can be performed. Processing up to taking an enormous amount of image data into a neural network or the like can be performed in the imaging device; thus, processing can be efficiently performed.
Claims19
An imaging device comprising:
- a photoelectric conversion element, a first transistor, a second transistor, a first inverter circuit, and a second inverter circuit,
- wherein the photoelectric conversion element is electrically connected to an input terminal of the first inverter circuit, one of a source and a drain of the first transistor, and one of a source and a drain of the second transistor,
- wherein an output terminal of the first inverter circuit is electrically connected to a gate of the first transistor and an input terminal of the second inverter circuit,
- wherein an output terminal of the second inverter circuit is electrically connected to a gate of the second transistor, and
- wherein a polarity of the first transistor is different from a polarity of the second transistor.
8-18. (canceled)
An imaging device comprising:
- a first transistor, a second transistor, a first inverter circuit, and a second inverter circuit,
- wherein an input terminal of the first inverter circuit is electrically connected to one of a source and a drain of the first transistor and one of a source and a drain of the second transistor,
- wherein an output terminal of the first inverter circuit is electrically connected to a gate of the first transistor and an input terminal of the second inverter circuit,
- wherein an output terminal of the second inverter circuit is electrically connected to a gate of the second transistor,
- wherein a polarity of the first transistor is different from a polarity of the second transistor.
Dependencies are inferred from the claim text.