PenTile Super AMOLED Chosen for Display Application Gold Award – 2nd Year in a Row

There is one organization that is more focused than any other on displays—the Society for Information Displays, now celebrating its 50 year anniversary.  Display Week is held each year as a gathering of the world’s display experts.  After evaluating every new display component that has been introduced into products this past year SID selected the display in the Samsung Galaxy Note for the gold award winner.  You might recall that the display in the Samsung Galaxy S won this award last year.  So, for two years in a row a PenTile OLED panel has been awarded this coveted honor.

http://www.androiddoes.net/breaking-news/galaxy-note-wins-display-industry-award-at-sid-2012/

Shown below is T K Lee of Samsung SMD accepting the award at SID’s awards luncheon event.

 

 

 

 

 

 

 

 

 

 

Here is a photo of the Galaxy Note Gold Award winner exhibit in the Samsung booth.

 

 

 

 

 

 

 

 

 

So if the world’s experts in displays, who also generated he first comprehensive standard for display metrology published May 31, 2012 have judged this PenTile display as the best how can it be that so many bloggers persist in finding fault with PenTile displays? It is time to recognize the impact that PenTile has had on the display industry and the quality that it offers.

Shown below is the Samsung SID booth.

Amongst the roughly 30+ displays that were shown this about one half of these were PenTile displays, including the PenTile Super AMOLED displays used in the Galaxy Note, the Galaxy Nexus, the Galaxy Prime, the Galaxy Nexus and the newly announced  Galaxy SIII smartphones.  Samsung also exhibited their line of mirrorless digital SLR cameras, each of which uses a 3-inch VGA PenTile OLED display.

5 comments on “PenTile Super AMOLED Chosen for Display Application Gold Award – 2nd Year in a Row

  1. Hey I’ve got a question. With Pentile displays using subpixel rendering, would it be possible to display an image that addressed each little colored subpixel as a pixel itself. So although it would appear white, would you be able to do it in a way that a phone like the Galaxy S III is displaying a 1280×1440 image of little red green and blue dots?

    • Let me provide a short reply now and a longer response later this week. The short answer to the question is that it is not possible to address each little subpixel as a pixel itself, but it is possible to map such an input resolution to the subpixels in such a manner as it would exhibit less moire, much in the same manner as is done for ClearType.

  2. Thanks for this blog, it is of big value for me and definitely made me less skeptical about PenTile technology.
    I have one question regarding for sure the display but I don’t know if its directly PenTile related: are you aware of a problem some users describe as “ink” dots on the screen when looking at in a dark environment (room) with only the black background displayed? This is what users are reporting with – for example – SGS III, there’s a whole thread at XDA: http://forum.xda-developers.com/showthread.php?t=1658601 . I’m not talking about the other issues described there (colors etc.) but I particularly mean those dots like in this picture: http://bit.ly/LwuFAe
    Can this become worse over time and should we return the phone or rather ignore it? And generally – why are those dots there?

    • It is great that this blog is helping people like you to better understand PenTile technology. Likewise, I appreciate your calling my attention to any issues being discussed on other blogs. While I try to follow other blogs on PenTile I missed these comments.

      There isn’t much info there about the ink dots on black backgrounds, but your link to the photo was great or I might have missed that too. I will head to my local phone dealer and have a look for myself. As you imagine this cannot be a PenTile related issue as it has no pattern nor periodicity. Look for another comment soon.

      While you didn’t comment on the pink color part of the thread, I have to wonder if the pinks are showing up in all applications, or if this is only in specific software applications that are running with 5-6-5 mode instead of the preferred 18-bit color mode. We saw that issue in the original Galaxy Nexus. PenTile technology should not appear pink, but high contrast displays like OLED are very sensitive to any shift toward the red due to quantization error since there are many shade of pink that can be encountered when care is not taken to balance the red against the green in software applications.

    • Sadly every AT&T and Verizon store I check still had no Galaxy S3s to demonstrate, so I cannot do your test just yet. However, I gave the “ink spot” question more thought and I have further comment.

      OLED displays differ from LCDs in several ways. One is that they require current to drive them, whereas LCDs require an electric field. Furthermore the threshold characteristics of LCDs is such that LCDs are relatively insensitive to small fluctuations in electric field as the field threshold properties smoothes this out. For OLEDs there is less of a threshold for them to turn on. Slight variations in the current that the active matrix backplane delivers is seen as nonuniformities in the OLED drive. For the most part these are invisible, but at extremely low current, where there is almost no current being used to drive the OLED, the OLED will light up ever so little. If you turn off all the lights in the room so that it is very, very, very dark and then let your eyes acclimate to the darkness you can see a slight glow in the display. It is only in this circumstance that I think you can see this “ink spot” effect.

      Now we have to consider something about the human vision system known as Weber’s Law. You can check this out at Wikipedia for more detail (http://bit.ly/gZG7SE). In a nutshell, the human vision system has logarithmic response. Consequently your eyes will exponentially amplify these nonuniformities in this unique circumstance. My guess is that all OLED displays will show this issue under the same circumstances.

      So now I have to ask you why you would need to look at your Galaxy S3 in this way. Do you turn it on in a movie theater to read it when the room is pitch black? My guess is that is what it would take to see this. My advice is to watch the movie instead. IMHO this is a pretty weak deficiency considering the other circumstances where OLEDs provide superior performance and it won’t hold me up from buying a Galaxy S3..

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