pentyl is incorrectly written, and should be written as "PenTile" being its meaning:
pentyl = PenTileThe PenTile Matrix is a configuration of sub-pixels that differs from more traditional in a number of ways RGB pixels. Sub-pixels on a screen PenTile can act as a part of many logical pixels, and often contain white pure sub-pixels. The effect of this is that the PenTile screens can settle for less real subpixels for a given resolution and can be perceived as brighter also. In spite of this, the screens using the PenTile configuration are often ridiculed by the press and consumers be diffuse in comparison to the same resolution of core samples that use a more traditional RGB subpixel matrix.