Article confirming Samsung's decision to delay QD-OLED program by at lleast 3-6 months: http://www.thelec.kr/news/articleView.html?idxno=1892
Via google translate:
"Samsung Display is experiencing difficulties in developing large-size OLED for next-generation TVs.
An official in the display industry said, "Samsung Display has not been able to accurately capture the production concept," he said. Samsung Display reported that it had delayed the request for deposition equipment to the first quarter of the next year from the fourth quarter of this year
. Organic deposition equipment to be used in the large-sized OLED production line of Samsung Display is to be supplied by Japan's Canon Torque.
Samsung Electronics' video display (VD) division launched OLED TVs with red, green and blue (RGB) emission in 2013. After that, Samsung Electronics folded its large OLED business. The next-generation large OLED for TVs developed by Samsung Display is known as the blue (B) emission method. In RGB subpixel configuration, red and green use quantum dot (QD) photoluminescence (PL) and blue uses organic luminescence as is.
One of the major issues in the technology, called QD-OLED, is the 'blue overkill'. QD light emission is a phenomenon in which blue light is emitted between particles and particles by hitting the quantum dot in a color filter with blue light. Quantum dot is used to increase the color purity, but the problem of color mixing appears.
Samsung Display plans to switch some of its LCD production lines from its L8 factory in Asan City, Chungcheongnam-do to a large OLED line for TVs. In the industry, this is called the 'C project'. C project implementation was originally scheduled for the third quarter of this year. However, due to the delayed arrival of deposition equipment, which is the core equipment for large OLED production lines, the implementation of the C project is expected to start at the end of this year.
Samsung Display's next-generation large OLED TVs are a group-wide move strategy. Lee Jae-yong, vice chairman of Samsung Electronics, was reported to have received in-depth reports from executives such as Lee Dong-hoon, CEO of Samsung Display at the end of last year, on the theme of "next-generation product development and investment strategy." The industry analysis shows that Samsung Display is sensitive to the recent news that it has suffered difficulties in the development of new OLED technology and management indicators.
In addition to mass production technology, marketing points are also a challenge for Samsung Display
. Unless it is the RGB emission method, it is difficult to distinguish LG Display from its competitor, white (W) OLED. The currently known QD-OLED concept is not significantly different from the light emitting structure of LG Display WOLED in that it emits light with organic materials and filters light through a color filter.
Samsung's VD division has said in recent years that OLEDs are not suitable for TV because of the burn-in phenomenon. The burning phenomenon caused by the lifetime of the organic material (especially blue) can not be avoided as long as the blue organic material is used."
So to translate the translation:
QDCC is not perfect and allows some blue photons to escape unconverted (the 'color-mixing' problem).
The proposed solution by Samsung Display is to add color filters to block the otherwise-escaping blue photons.
This solves the technical issue but then the Samsung Visual Display folks (who would rather see the Samsung Group invest in scaling up MicroLED) push back with the 'marketing point' that if Samsung uses color filters for QD-BOLED, they won't be able to distinguish it from LG's White-OLED+Color-Filter-based WOLED.
Oh, and in case that argument is not sufficient on its own, the Samsung Visual Display guys are arguing that they also can't use OLED for TV until Samsung Display has developed blue OLED material that does not suffer from burn-in...
'You say you can get rid of the color filters and solve the problem of blue burn-in? That sounds great - we'll check back in with in with you in another three months (and meanwhile, we've put all QD-BOLED pilot line investments on hold).'