After casually browsing this wikipedia article on google’s Nexus One (or HTC’s) I became interested in the AMOLED (Active-matrix OLED (Organic Light Emitting Device) screen due to its interesting pixel structure. Quote from wikipedia:
The Nexus One has a 3.7 inch AMOLED screen with PenTile matrix pixel arrangement. The raster resolution is 800×480 pixels, however each pixel in the PenTile RGBG display has only two subpixels (red and green, or blue and green alternately), rather than the three found in most displays. This gives it a total effective subpixel resolution of a 392×653 RBG display.
**Update: New images from better microscope**