Multiplexing pixel control circuit for super large area array splicing cmos image sensor

Abstract

The invention discloses a multiplexed pixel control circuit for splicing CMOS image sensors with super-large area arrays, which includes L-level serial pixel control sub-circuits A, and each level of serial pixel control sub-circuits A can generate 1 row Control signal of pixel, each serial pixel control subcircuit A includes K-level serial pixel control subcircuit B and windowing address gating circuit, each serial pixel control subcircuit B is a basic windowing unit, and generate I / K row pixel control signals, and each pixel control subcircuit B includes a W-level minimum pixel control subcircuit C. Through the design of the window address gating circuit, the L serial pixel control sub-circuits A are completely consistent except for the connection mode of the lead wires in the I / O bonding finger area, so that the complex structure is realized. The window function of the type circuit. The circuit structure of the invention is simple, reliable in control, excellent in scalability and reusability, and can be applied to CMOS image sensor chip circuits of different area array scales.

Description

technical field [0001] The invention belongs to the technical field of CMOS image sensors, and in particular relates to a multiplexed pixel control circuit for splicing CMOS image sensors with super large area arrays. Background technique [0002] The role of the image sensor is mainly to collect digital images and convert the collected optical signals into electrical signals. Image sensors that have been commercially available on a large scale are mainly divided into two types: CCD and CMOS. Compared with CCD image sensors, CMOS image sensors have the advantages of low power consumption, low cost and high compatibility, and are widely used in the fields of aerospace, biotechnology and consumer electronics. [0003] With the expansion of the application range, consumers have higher requirements for image size, and the demand for large-scale image sensors is increasing. Traditional image sensor design methods often only focus on improving resolution or frame rate, ignoring ...

AI Technical Summary

Problems solved by technology

At present, the pixel row control circuit for controlling the row windowing in the image sensor generally adopts the traditional decoding circuit, which is difficult to overcome the disadvantage of being unable to be reused. Therefore, how to improve the pixel row control circuit, with a smaller circuit structure and reusable The design and realization of the current design difficulties

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