My post showing the comparison of fonts with RGB stripe to PenTile RGBW LCD and PenTile RGBG OLED still left a few people confused, so I am going to illustrate this one more way. Previously, I compared the results for the same number of columns. Since PenTile RGBW can represent the amount of information in one-third fewer columns my prior blog showed the PenTile RGBW with one-third more font information.
This time I am comparing the same amount of font information, where PenTile RGBW used one third fewer columns, but have stretched the columns horizontally to match the horizontal space of the RGB stripe, just as it is done in products today. This allows the comparison of equivalent size single stroke Arial fonts between RGB stripe and PenTile RGBW.
Perhaps you may wonder why there are some color subpixels turned on in places such as the vertical stroke of the “D”. The reason is that if viewed at the normal distance, and if these subpixels were turned off, such a rendering would cause a color error to the white that was adjacent to the black line. Rendering this as has been done prevents such color error at the edge of this font. And, yes the PenTile RGBW should look brighter than the RGB stripe since this is a representation of the relative light transmission of PenTile RGBW vs RGB Stripe
The only problem is that this magnification is not at all how the human vision system sees this. At the viewing distance for which this is design, that which you see will be blurred to hide the subpixels. Move away from your screen until the subpixels on the lft hand images are not apparent and you will see this as finished product would appear.
Moving away from the display has also be emulated by taking the images on the left and blurring it in Photoshop HSL space to create the images on the right that more accurately represent how the vision system sees these font renderings.