IFNews quotes Chinese sites HQEW, EEPW, UDN, that refer to Taiwan Economic Times reporting that image sensors are in short supply now. This follows the shortages of capacitors, resistors, discrete MOSFETs, lenses, AF motors, and other components in the recent months. In case of image sensors, the main reason is said to be the growing adoption of dual- and triple-camera smartphones. Sony and Omnivision are increasing their image sensor prices. The smaller smartphone manufacturers, being unable to secure Sony, Omnivision, and Samsung sensors, are shifting their orders to Pixart and Silicon Optronics (SOI) as the cheaper alternatives.
MDPI Sensor publishes " A Review of Ion Implantation Technology for Image Sensors " by Nobukazu Teranishi, Genshu Fuse, and Michiro Sugitani from Shizuoka and Hyogo Universities and Sumitomo. " Image sensors are so sensitive to metal contamination that they can detect even one metal atom per pixel. To reduce the metal contamination, the plasma shower using RF (radio frequency) plasma generation is a representative example. The electrostatic angular energy filter after the mass analyzing magnet is a highly effective method to remove energetic metal contamination. The protection layer on the silicon is needed to protect the silicon wafer against the physisorbed metals. The thickness of the protection layer should be determined by considering the knock-on depth. The damage by ion implantation also causes blemishes. It becomes larger in the following conditions if the other conditions are the same; a. higher energy; b. larger dose; c. smaller beam size (higher beam current d...
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