Galaxy S3 Arrives — and, yes, with PenTile Super AMOLED

Samsung Galaxy S3

At long last the long awaited Galaxy SIII smartphone has emerged and the blogs such as Android Community  http://bit.ly/K5t9Rz are describing the unboxing.  Despite the many speculations about Samsung abandoning PenTile for this 720P OLED display  http://bit.ly/JFb79Z , it is now apparent that this didn’t happen.   http://engt.co/IpwdXs  Samsung has not abandoned PenTile and still counts on PenTile for such high resolution OLED displays such as the Galaxy S3 with a 306 PPI layout.

When bloggers refer to PenTile Super AMOLED as being cheaper, I have to ask them, “Cheaper than what?”  Show me a comparable, high resolution RGB stripe AMOLED display to compare this to.  If there is no such displays any discussion of relative cost is meaningless.  PenTile technology remains an enabler for high resolution OLED applications, not a cost reducer.  And, as long as the demand for ever increasing resolution continues you will see many more such PenTile OLED designs.

Increasingly I am seeing blogs that ask what is wrong with PenTile anyway.  Despite the vocal critics, at a pixel pitch in the range of 300ppi+  PenTile technology is a great fit for these applications.

2 comments on “Galaxy S3 Arrives — and, yes, with PenTile Super AMOLED

  1. “what is wrong with PenTile anyway”
    Well, 2 subpixels instead of 3 along with funky checkerboard-like pattern means that if you have healthy eyesight you’re gonna hate the quality of the display compared to much, much, much sharper screens like on Nokia Lumia 710 (compared to AMOLED on Lumia 800) or iPhone 4/4S. The colors and brightness on the AMOLEDs may be fine, but the geometric quality is annoying to the eye and appears as much lower resolution/pixel density, than comparable LCDs, seriously.

    • It is not as simple as 2 subpixels instead of three. PenTile utilizes as many as 10 subpixels with subpixel rendering to render each pixel. Subpixels forming each pixel overlap, much like the light distributon for pixels in CRTs. It is modulation contrast ratio that your eye sees, not groupings of 3 subpxiels. PenTile panels have the same luminance MTF as RGB stripe, and through the use of adaptive filters that sharpen lines it is far better than it would seem for one-third fewer subpixels. The fact remains that eliminating subpixels with PenTile technology enables OLED at resolutions above 230 PPI, and with it the gamut, speed and contrast of OLED, that many people seem to prefer, as evidenced by recent sales. I have demonstrated my 306 PPI Galaxy S3 to quite a few people who have much better eyesight than me and none of them could see any of the pattern visibility of earlier lower PPI designs. The abundance of good reviews of the S3 display give a similar indication.

      There are those people who can accommodate from very short range and who can resolve information as high as 50 cy/degree. For those people it is certainly true that they can see a pattern, but they can also see a pattern at the 230 PPI RGB stripe patterns in many LCDs yet they failed to complain about that pattern. The issue then is one of being different. Still I appreciate that you took the time to express your perspective.

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