Samsung had to combine production methods for the first true HD Super AMOLED screen on the Galaxy S III
The Fine Metal Mask (FMM) process currently used for AMOLEDs is expensive, cumbersome and doesn't allow for pixels smaller than 15 micrometers, meaning that it can at most top at about 250ppi pixel density, and is what we have on the Samsung Galaxy S II, for example.
didn't find anything wrong with PenTile at HD resolutions, but screen purists scoff at it, and the competition like LG is advertising their 720p LCD screens with a normal RGB matrix as "true HD", taking a jab at the PenTile arrangement Samsung uses.For an HD screen with this technology, Samsung had to use the alternative PenTile screen matrix arrangement, which allowed it to make the Super AMOLED HD screens on the Galaxy Note and Nexus. We
Well, if the latest report from Korea regarding the Galaxy S III screen is to be believed, companies like LG won't have dibs at the true HD moniker when it comes to Super AMOLED screens any more. Samsung has reportedly managed to introduce the tricky Laser-Induced Thermal Imaging (LITI) production method, which is cheaper and allows for pixels as small as 2.5 micrometers, but until now has not been employed on a commercial scale.
5.5-Gen A2 production line that was supposed to move to Phase 3 production method tests in Q1 this year, will be churning out the 720p Super AMOLED screen with a regular RGB matrix for the Samsung Galaxy S III now in Q2.Just as we predicted last year, that
Moreover, Samsung is reportedly using a combination of FMM and LITI for it - FMM for the blue pixels, since it's the blue that traditionally gave trouble in OLED screens with its shorter lifespan than the other organic LEDs, and LITI for the red and green pixels, resulting in what we hope will be a gorgeous and durable RGB Super AMOLED screen for the Galaxy S III.
The panel is reported to be the same one that initially went out on the 4.65" Galaxy S II HD LTE, but done with a true HD RGB matrix, resulting into the sweet 316ppi pixel density, for real this time.
After all, Samsung trashed a football field worth of display glass just to achieve the 720p definition on the Galaxy Nexus screen, so we are sure that the new Super AMOLED HD Plus, or whatever its commercial name, will be an image to behold.
source: DDaily (translated)