Sony has a new patent application submitted for an image sensor with a so-called global shutter. To the light sensitivity increase would be made use of bsi technology and multiple kleurgevoelige layers per subpixel.
Current cmos image sensors make use of an exposure method in which the image pixelrij for pixelrij be read. This can be in rapid movement in the image, the so-called rolling shutter effect, which, for example, straight lines in the resulting image will be skewed to look like. A global shutter where all pixels at the same time lit, can solve this problem. Ccd’s are already making use of a global shutter, but with cmos sensors is the technology not yet widely applied.
Sony now has a patent for a cmos image sensor with global shutter and submitted to the American patentenbureau. Sony combines this concept with a backside illuminated structure, the image sensor, where the metal bedradingslagen under the light-sensitive surface. Also describes Sony the added ability to have multiple kleurgevoelige layers per subpixel to use, just as with the Foveon-sensorontwerp of Sigma.
According to the patent application, filed on 6 July this year, and on december 22, published, the above techniques it is possible to have smaller image sensors to build and/or the light sensitivity to increase. It is not known whether Sony, the techniques will be used for image sensors in smartphones, compact cameras or the larger work.
