Sony’s mobile camera resource – SONY
Sony has introduced a new stacked CMOS sensor In which it has introduced an architecture that separates the photodiodes and the pixel transistors in two capable of increasing the light it collects, improving the dynamic range and reducing noise in night photography.
The announcement, made within the framework of the IEEE International Electron Devices Meeting, features a new structure, in which the chip containing the retroliminated pixels places the photodiodes and pixel transistors in separate layers stacked on top of each other.
This design differs from the more traditional one, which places photodiodes and pixel transistors on substrates side by side, as the company points out in a statement.
With the new stacking architecture it is possible to optimize those capable of photodioses and pixel transistors and thus “approximately double the level of the clipping signal relative to conventional image sensors, in turn expanding the dynamic range. ”
Another advantage of this new design is that it allows you to expand the size of the amplification transistors, to reduce “substantially” noise generated in night images or in poorly lit situations.
“The expanded dynamic range and noise reduction available with this new technology will prevent underexposure and overexposure in environments with a combination of bright and dim lighting and will allow high-quality, low-noise images even in low light“, they assure from Sony.