If you have been jonesing for the Galaxy Note 4 to be put under the microscope, it is your lucky day, as that's precisely what has happened to Samsung's newest phablet. Besides putting the speaker grills, Samsung logo, and even the S Pen stylus under the enlarging capabilities of the microscope, the Note 4's screen has also been subjected to the treatment.
Looking at the pixel matrix arrangement of the phablet's 5.7" 1440 x 2560 pixels QHD Super AMOLED display, we can finally put to rest any doubts that Samsung has used its trademark "diamond pixel" PenTile technology to achieve this crazy pixel density on an AMOLED panel. Unlike traditional RGB LCD displays where each pixel is made out of a red, green, and blue sub-pixel, PenTile displays use less sub-pixels, as they are arranged in an alternative manner.
As you can see, in the Note 4 we have diamond-shaped sub-pixels for the blue and red colors, and an oval-shaped green sub-pixel, like on the Galaxy S4, for instance. In the Galaxy S5 and Note 3, all sub-pixels are in the diamond shape, so that's a return to the first diamond pixel edition for Samsung, warranted perhaps by the hearty 515ppi pixel density of the display.