Sony develops 'Exmor RS,' the world's first stacked CMOS image sensorAugust 20, 2012 in Technology / Hardware
Sony Corporation announced the commercialization of Exmor RS, the world's first CMOS image sensor incorporating a unique, newly-developed 'stacked structure.' Shipments will commence in October. Sony is introducing three models of the Exmor RS, stacked CMOS image sensor, for use in smartphones and tablets, which combine superior image quality and advanced functionality with compact size. Sony will also launch three corresponding imaging modules incorporating these sensors.
Going forward, Sony will continue to evolve its digital imaging products, while aggressively pursuing the further development and expansion of its core Exmor RS stacked CMOS image sensor technologies and lineup, in order to deliver increasingly diverse and user-friendly image capturing experiences.
The Exmor RS is a CMOS image sensor that adopts a unique stacked structure. This structure layers the pixel section, containing formations of back-illuminated pixels over the chip affixed with mounted circuits for signal processing, in place of conventional supporting substrates used for back-illuminated CMOS image sensors.
Two of the three Exmor RS models Sony is launching are the IMX135, a type 1/3.06 model with 13.13 effective megapixels and the IMX134, a type 1/4 model with 8.08 effective megapixels, which feature RGBW coding function and HDR (High Dynamic Range) movie function. The RGBW coding function can capture sharp, clear images even when filmed or photographed in low light conditions, such as a dark room or at night by featuring W (white) pixels in addition to conventional RGB (red-green-blue) pixels, and leveraging Sonys proprietary device technology and signal processing to heighten sensitivity without compromising its high resolution. HDR (High Dynamic Range) movie function enables two different exposure conditions to be configured within a single screen when shooting, and seamlessly performs appropriate image processing to generate optimal images with a wide dynamic range and brilliant colors, even when pictures are taken against bright light. The other Exmor RS model is the ISX014, a type 1/4 model with 8.08 effective megapixels, which has a built-in camera signal processing function.
In addition to the higher image quality and superior functionality, the use of a stacked structure has helped Sony to achieve a more compact size.
Sony will also bring to market three compact auto-focus imaging modules equipped with lens units and featuring auto-focus mechanisms that incorporate these image sensors: the IU135F3-Z, IU134F9-Z and IUS014F-Z. These three imaging modules adopt a newly-designed lens which has been optimized for the industrys smallest 1.12μm unit pixel size to achieve higher resolution.
The IU135F3-Z is an auto-focus imaging module incorporating a bright, high-resolution F2.2 lens. The IU134F9-Z (W:8.5 x D:8.5 x H:4.2mm) is thin and compact. The IUS014F-Z is an all-in-one imaging module that comprises an image sensor with built-in camera signal processing function and built-in auto-focus and picture adjustment function.
Going forward, Sony plans to continue with the proactive development of its Exmor RS stacked CMOS image sensors in order to bring to market imaging modules that achieve higher image quality, advanced functionality and an even more compact size. Sony aims to leverage the characteristics of its stacked structure design to respond to the demand for larger screens in devices such as smartphones, where the amount of space available for embedding imaging modules is limited, and to continue expanding its product lineup to better accommodate its customers needs.
"Sony develops 'Exmor RS,' the world's first stacked CMOS image sensor" August 20, 2012 http://phys.org/news/2012-08-sony-exmor-rs-world-stacked.html