We have published several updates related to Panasonic’s Organic sensor development in the past, but now Panasonic today issued a new press release that reports Panasonic has made a groundbreaking development in organic CMOS image sensors. This new technology allows for accurate color reproduction by using the high light absorption rate of the organic film to thin the photoelectric conversion layer, which reduces color mixing.
The organic film used for photoelectric conversion is entirely separate from the circuit responsible for storing and reading electric charge. This unique layered structure reduces the sensitivity of each pixel in the green, red, and blue wavelength regions outside the target range, resulting in exceptional spectral characteristics with low color mixing. As a result, this technology can deliver precise color reproduction, regardless of the light source.
How this New Technology Works
- Photoelectric conversion film thinning technology – The new organic thin film can absorb up to 10 times more light than traditional silicon photodiodes. This means the organic film can be made thinner and still absorb the same amount of light, which reduces color mixing from light hitting neighboring pixels at an angle.
- Electrical pixel isolation technology – Helps to remove unwanted charges at the edges of pixels. This helps to suppress the signal charge from the neighboring pixels.
- Light transmission suppression structure – To prevent light from passing through the photoelectric layer, the lower portion of the organic thin film has a pixel electrode and a charge-discharging electrode covering it. This helps to stop light that the organic thin film can’t absorb. Red light is especially prone to causing color mixing, but this method significantly reduces its transmission.
Panasonic’s organic CMOS sensor, whose progress is going in a slow speed, still waiting to get introduced commercially. With the technology developed this time, it is possible to achieve good color reproduction under all light sources, so if it is adopted for digital camera sensors (M4/3 / APS-C / FF), it seems that color reproduction under artificial light sources will be dramatically improved.
We are covering up the organic sensor news from 2013. In 2014 we have received news that Panasonic and Fuji Organic Sensor Based Camera Delayed and after that, on March 2017 we got the news via the French website DChome that Panasonic Working on the Mass Production of Organic Sensor.
source Panasonic Press
