Originally Posted by irkuck
Well, judging from the price and volumes of the 55" LG 2K OLED they are in single digit yields just because of the WRGB, Samsung yields must be microscopic. 4K yields would be only much more worse than that. I see oledlight at the end of the tunnel though due to the LG building new plant for OLED TVs, they had to make big progress in manufacturing to justify the plant. I still do not see OLED competing with LCD on economic grounds.
Maybe OLED will never compete on economic grounds, irkuck, but your insistence on posting about the single-digit yields as related to the WRGB when the only existing reports indicate it has nothing at all to do with that
By all accounts, the yield problem is due to LG trying to ramp IGZO at 55" while also trying to build OLEDs. And their IGZO yield is flat out terrible.
Yet, in the LCD industry, 100% of mfrs. are (a) planning to go to IGZO (b) believing it has no fundamental showstoppers and (c) believing it will ultimately be as cheap -- or perhaps cheaper -- as a-Si.
So... while there are doubtless less than 100% yields at the vapor depo step of the RGB OLED layers on the LG, let's stop suggesting that's somehow really a failed concept, even if its struggling.
As for going to 4K, you mistakenly believe it would much alter the yields. It wouldn't. On the color-filter layer, the yields should be identical, since 4K color filters are trivial
Perhaps in the short run the IGZO layer at 4K would be a tiny tiny bit more challenging, but again, 4K pixel density at 55" is so low
, if they had just decided to ramp at 4K initially, their yields would not be any lower than they are now
. Since the vapor depo process has no pixels, it would not be affected by being 4K at all.
It was a marketing blunder by LG to not realize the 4K jump would occur so quickly and that their OLED ramp would occur so slowly. I promise you if they had it to do over again and realized:
1) That they wouldn't ship 10,000 OLEDs till 2014 and
2) That 4K would be on the market in 2013
They'd not have done 2K OLED, especially given their passive 3-D tech.