Solid-state imaging element and electronic
AssigneeSony Semiconductor Solutions Corporation
InventorRyohei Kawasaki
Life of this patent
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Abstract
The present disclosure relates to a solid-state imaging element and electronic equipment that make it possible to sufficiently secure a time width of a pulse signal. In an AD converter for each unit pixel, a pulse generation circuit feeds back a delay signal obtained by delaying an output signal of the comparator to the comparator and arithmetically operates the output signal and the delay signal to generate a pulse signal. A latch circuit latches the pulse signal generated by the pulse generation circuit. The present disclosure can be applied to a solid-state imaging element of a stacked type and a back side illumination type.
Claims10
A solid-state imaging element, comprising:
- a pixel array section in which unit pixels each having a photoelectric conversion section are disposed;
- and
- an AD converter for each of the unit pixels, wherein
- the AD converter includes
- a pulse generation circuit that feeds back a delay signal obtained by delaying an output signal of a comparator to the comparator and performs arithmetic operation of the output signal and the delay signal to generate a pulse signal, and
- a latch circuit that latches a data code using the pulse signal generated by the pulse generation circuit.
Electronic equipment comprising:
- a solid-state imaging element including
- a pixel array section in which unit pixels each having a photoelectric conversion section are disposed, and
- an AD converter for each of the unit pixels, in which the AD converter includes
- a pulse generation circuit that feeds back a delay signal obtained by delaying an output signal of a comparator to the comparator and performs arithmetic operation of the output signal and the delay signal to generate a pulse signal, and
- a latch circuit that latches a data code using the pulse signal generated by the pulse generation circuit;
- a signal processing circuit that processes an output signal outputted from the solid-state imaging element;
- and
- an optical system that enters incident light into the solid-state imaging element.
Dependencies are inferred from the claim text.