Sony develops next-generation back-illuminated CMOS image sensor

Jan 24, 2012

Sony today announced that it has developed a new next-generation back-illuminated CMOS image sensor which embodies the continuous evolution of the camera. This image sensor layers the pixel section containing formations of back-illuminated structure pixels onto chips containing the circuit section for signal processing, which is in place of supporting substrates for conventional back-illuminated CMOS image sensors. This structure achieves further enhancement in image quality, superior functionalities and a more compact size that will lead to enhanced camera evolution.

Hereafter, will position it as the back-illuminated CMOS image sensors, and unwaveringly strive to further develop this image sensor and expand its product lineup, thereby contributing to the further development of user-friendly cameras and to shooting enjoyment.

• Large-scale circuits required for higher image quality and better functionality are built-in
• More compact image sensor chip size
• Even higher image quality of the pixel section by adopting manufacturing processes specialized for superior image quality
• Faster speeds and lower power consumption by adopting the leading process for the circuit section

The popularization of smartphones and other devices in recent years has been accompanied by an increasingly diverse use of functionality. This has brought heightened demand for more sophisticated cameras, to ensure adaptability to a wider range of scenes and Sony developed this stacked CMOS to meet such demand. In addition to the higher pixel numbers, superior image quality and faster speeds which conventional image sensors pursued, the newly-developed image sensors further achieve more highly-advanced functionalities and a more compact size, thus paving the way for enhanced camera evolution.

As the first step towards the commercialization of its new CMOS image sensors, Sony has developed a model with built-in signal processing functionality, an element that usually requires external embedment. Samples will be shipped from March, 2012. Accordingly, models have been developed with Sony’s unique “RGBW Coding” function, which facilitates low noise, high quality image capture even in low light condition, and the proprietary “HDR (High Dynamic Range) Movie” function, which achieves brilliant color even when taking pictures against bright light.

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.

Sony has succeeded in establishing a structure that 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 used for conventional back-illuminated CMOS image sensors. By this stacked structure, large-scale circuits can now be mounted keeping small chip size. Furthermore, as the pixel section and circuit section are formed as independent chips, a manufacturing process can be adopted, enabling the pixel section to be specialized for higher image quality while the circuit section can be specialized for higher functionality, thus simultaneously achieving higher , superior functionality and a more compact size. In addition, faster signal processing and lower power consumption can also be achieved through the use of leading process for the chip containing the circuits.

Explore further: MediaTek SoC to boost 64-bit Android devices

add to favorites email to friend print save as pdf

Related Stories

Sony develops new back-illuminated CMOS image sensor

Jun 11, 2008

Sony Corporation today announced the development of a back-illuminated CMOS image sensor (pixel size: 1.75µm square pixels, five effective mega pixels, 60 frames/s) with significantly enhanced imaging characteristics, ...

World's Smallest 2.0µm-Pixel MOS Image Sensor

Feb 09, 2005

Panasonic, the leading brand by which Matsushita Electric Industrial Co., Ltd. is known, today announced the development of the world's smallest image sensor. The revolutionary MOS image sensor has only 2.0 × 2.0 μm ...

Recommended for you

Thieves got into 1K StubHub accounts

17 minutes ago

(AP)—Cyber thieves got into more than 1,000 StubHub customers' accounts and fraudulently bought tickets for events through the online ticket reseller, a law enforcement official and the company said Tuesday.

Microsoft CEO sees 'bold' plan as 4Q tops Street

37 minutes ago

(AP)—Microsoft Corp. CEO Satya Nadella painted an upbeat vision of the future Tuesday, saying that the next version of Windows will be unified across screens of all sizes and that two money-losing units—Nokia ...

Apple's fiscal 3Q earnings top analyst forecasts

10 hours ago

Apple's growth prospects are looking brighter as anticipation builds for the upcoming release of the next iPhone, a model that is expected to cater to consumers yearning for a bigger screen.

User comments : 0