Samsung Applies for Combined ToF and RGB Imager Patent

Samsung application US20110074989 proposes the integration of ToF IR pixels with RGB or RGB-W ones in a single array. One example of the pixel arrangement assumes quite big structure repeating itself across the array (black area transmits IR light):

The cross-section along the lines A-A is:

ToF portion seems to be based on Kawahito ToF approach with in-phase and out-of-phase integration nodes, controlled by electric current flow, Fig 5A and B respectively:

At the same time RGB-W pixels are protected from IR ToF illumination by a p+ potential barrier:

The sensor seems to be aimed to mobile applications.

Update: A separate Samsung application US20110085063 talks about IR-RGB color filter arrangement and RGB interpolation for that case.