Multiplex pixel element control circuit for super-large planar array tiled CMOS (complementary metal oxide semiconductor) image sensor

Abstract

The invention discloses a multiplex pixel element control circuit for a super-large planar array tiled CMOS (complementary metal oxide semiconductor) image sensor. The multiplex pixel element control circuit comprises L levels of serial pixel element control sub-circuits A. Each level of serial pixel element control sub-circuits A can generate a control signal of I rows of pixel elements. Each serial pixel element control sub-circuit A comprises K levels of serial pixel element control sub-circuits B and a windowing address strobe circuit. Each serial pixel element control sub-circuit B comprises W levels of smallest pixel element sub-circuits C. By designing the windowing address strobe circuits, except the difference of I / O bonding finger area lead connection modes, the L serial pixel element control sub-circuits A have completely uniform address-coding structures, thus a windowing function of the circuit is achieved. The circuit is simple in structure, reliable to control, good in extensibility and reusability and applicable to CMOS image sensor chip circuits of different planar 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

Images