Samsung trademarked the term “Hexa²pixel”, which is described in the archive as “image sensors for photographic devices”. This was discovered by GalaxyClub initially, now leaky Ice universe has tweeted about the trademark, teasing the resolution of the sensor in question.
The leakster suggests that this sensor will perform 36-in-1 pixel binning (a group of 6×6 pixels merged into one), which is well above the current Tetracell (2×2) and Nonapixel (3×3) arrangements. If the target is 12MP output (as it is with the other two), we can calculate the resolution.
That works out to 432MP, though it can be rounded up to 450MP. Either way, it will more than double the resolution of Samsung’s 200MP ISOCELL HP1 (1/1.22″, 0.64 µm pixels) and HP3 (1/1.4″, 0.56 µm pixels).
The ISOCELL HP3 color filter arrangement allows for 4-in-1 and 16-in-1 binning
Both HP sensors have “Tetra²pixel” color filters which allow them to do both 4×4 and 2×2 pixel binning for 12MP and 50MP output respectively. Given the “²” in the name of the new sensor, it will likely have two output modes as well.
6×6 and 3×3, maybe? If so, it will be able to output images with 12MP and 48MP resolution respectively. Binning will be necessary because even though the sensor is huge, having enough pixels will make them quite small.
A few years ago, some leaks suggested that Samsung is working on sensors with resolutions as high as 600MP (with an insane 1/0.57″ optical format), so this Hexa²pixel sensor may only represent the halfway mark of what’s to come in the next few years.