A few days ago LG announced it was going to unveil Quantum-Dots enhanced 4K LCDs next month, which made some people wonder whether LG will abandon its OLED TV program - even though LG repeatedly stated that OLED is the future display technology of choice and that those QDs TVs will be positioned above LG's current high-end Ultra HD LCDs but below the company's OLED TV range.
Probably in response to those speculations, LG Display posted a new article that explains how OLEDs are indeed superior to QD-enhanced LCDs (they call them QD TVs).
LG says that OLEDs offer a much better response speed, contrast ratio and viewing angles. QD LCDs offer a wider color gamut, and can therefore offer more accurate colors. OLEDs do perform better in certain environments, though, due to the high contrast ratio. OLEDs of-course enable the production of flexible and rollable displays, and is also more suited for transparent displays.
I think it's important to read LGD's article conclusion: "In fact, OLED technology is the technology that is so much advanced that it should not be compared to an LCD based QD. Hence, even though LG already has the technology to create QD, it is focusing on developing OLED". LG Display further says that they expect OLED TVs to competitive with LCDs within one or two years.