Title : More about Omnivision Nyxel Technology
link : More about Omnivision Nyxel Technology
More about Omnivision Nyxel Technology
EEJournal, ElectronicDesign publish more explanations about how Omnivision Nyxel IR technology works:"The Nyxel technology adds three pieces to the puzzle. The first is increasing the thickness of the silicon, which allows the photons to travel further in the pixel cell and enables more electron to photon conversion hence a brighter image. The second is essentially putting each cell into its own deep trench with barriers between cells to avoid photon travel to the neighboring pixels and prevent crosstalk. The other is to add a layer on the surface that absorbs the maximum amount of light. This combination provides a longer path, allowing the sensor to detect more photons and improve the overall performance of the system."
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| Regular pixel QE |
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| Nyxel pixel QE |
There is also a Chinese-language article at EDNChina site adding some numbers to the story:
"Now that we have a 50% market share in the security market, security products last year accounted for about 20-25% of the company's total revenues, its growth rate is much higher than the phone," OmniVision VP of China Chen Jiawang said.
"We increased the silicon layer from 4 microns to 6 microns, absorbing more photons, converting to more electrical signals and improving imaging efficiency," explained Chen Jiawang.
The technology has been successfully deployed on 12-inch wafers, while 8-inch wafers are said to be unusable.
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