Stacked CMOS image sensor from Sony improves on conventional back-illuminated designs

Tokyo, Japan--A new back-illuminated CMOS image sensor that layers back-illuminated structure pixels onto chips containing the circuit section for signal processing in place of supporting substrates in conventional back-illuminated CMOS image sensors has been developed by Sony. The stacked CMOS structure improves image quality with higher pixel numbers, increases imaging speed and low-light-imaging capability, and has a more compact size than traditional back-illuminated CMOS image sensors.

Conventional CMOS image sensors mount the pixel section and analog logic circuit on top of the same chip, which require numerous constraints when wishing to mount the large-scale circuits such as measures to counter the circuit scale and chip size, measures to suppress noise caused by the layout of the pixel and circuit sections, and optimizing the characteristics of pixels and circuit transistors.

The Sony structure layers the pixel section containing formations of back-illuminated structure pixels over the chip affixed with mounted circuits for signal processing, which is in place of supporting substrates used for conventional back-illuminated CMOS image sensors. Via the stacked structure, large-scale circuits can now be mounted on small chip sizes. Furthermore, as the pixel section and circuit section are formed as independent chips, a manufacturing process can be adopted that enables the pixel section to be specialized for higher image quality while the circuit section can be specialized for higher functionality, thus simultaneously achieving higher image quality, superior functionality, and a more compact size. In addition, faster signal processing and lower power consumption can also be achieved for the circuit chip.

Samples will be shipped beginning March 2012. The new models have been developed with Sony's "RGBW Coding" function that facilitates low noise, high-quality image capture even in low-light conditions, and the proprietary "HDR (High Dynamic Range) Movie" function achieves brilliant color even when taking pictures against bright light.

SOURCE: Sony; www.sony.net/SonyInfo/News/Press/201201/12-009E/index.html

IMAGE: The Sony stacked CMOS architecture stacks pixel and circuit functions without a substrate, improving performance and reducing size. (Courtesy Sony)

The Sony stacked CMOS architecture stacks pixel and circuit functions without a substrate, improving performance and reducing size

Most Popular Articles

50 YEARS OF GAS LASERS


Durable survivors evolve new forms

Webcasts

Laser Measurements Critical to Successful Additive Manufacturing Processes

Maximizing the stability of the variables going into any manufacturing process is what ensures ts consistency and high quality. Specifically, when a laser is...

Ray Optics Simulations with COMSOL Multiphysics

The Ray Optics Module can be used to simulate electromagnetic wave propagation when the wavelength is much smaller than the smallest geometric entity in the ...

Multichannel Spectroscopy: Technology and Applications

This webcast, sponsored by Hamamatsu, highlights some of the photonic technology used in spectroscopy, and the resulting applications.

Handheld Spectrometers

Spectroscopy is a powerful and versatile tool that traditionally often required a large and bulky instrument. The combination of compact optics and modern pa...
White Papers

All About Aspheric Lenses

The most notable benefit of aspheric lenses is their ability to correct for spherical aberration....

Wavelength stabilized multi-kW diode laser systems

Wavelength stabilization of high-power diode laser systems is an important means to increase the ...

Narrow-line fiber-coupled modules for DPAL pumping

A new series of fiber coupled diode laser modules optimized for DPAL pumping is presented, featur...
Technical Digests

ADHESIVES, SEALANTS, AND COATINGS: Solutions for optical technologies

A vast array of optical systems of various types and degrees of complexity require the use of adh...

WAVELENGTH-SWEPT LASERS: Dispersion-tuned fiber laser sweeps over a 140 nm range for OCT

By eliminating the use of mechanical tunable filters and instead tuning by intensity-modulation i...

Keeping pace with developments in photonic materials research

For demanding or custom spectroscopy solutions, care must be taken in selecting and integrating a...

HIGH-POWER FIBER LASERS: Working in the kilowatt regime

High-power materials-processing fiber lasers are available in an increasing variety of forms, as ...

Click here to have your products listed in the Laser Focus World Buyers Guide.
Social Activity
  •  
  •  
  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS