“Some merchandise marketed as ‘QLED’ use standard backlight architectures (normal phosphors, optical movies, diffuser plates) and depend on image modes or software program tuning to create a extra saturated ‘vivid’ look,” a January whitepaper by TÜV Rheinland and QD provider Nanosys reads. The whitepaper, “Re-defining a ‘true’ Quantum Dot Show,” additionally factors to gadgets which have QD materials at “hint ranges, or in packaging and integration designs that restrict excitation and light-weight extraction of sure wavelengths.”
“In these instances, the show should obtain aggressive headline gamut protection, but the measurable optical signature of an efficient QD system is absent or minimal,” the whitepaper says. “The spectrum, colour, quantity conduct at excessive luminance, chromaticity stability, and temporal response can stay just like these of non-QD LCD options.”
For now, the German ruling brings wanted scrutiny to “QLED” and different probably deceptive show phrases.
A transparent understanding of what constitutes QD shows can be important for QD-OLED shows and can solely grow to be extra necessary if true quantum dot electroluminescent shows ever take off. (These shows, utilizing a backlight-free know-how, are also called QDEL or QD-LED.)
“A quantum dot show needs to be outlined by a mixture of measurable materials focus and TV efficiency outcomes when it comes to colour purity, colour gamut et cetera. Ideally, in a approach that’s comprehensible by shoppers,” Virey mentioned.
TÜV Rheinland and Nanosys’ whitepaper argues that QD shows ought to meet sure efficiency necessities that transcend colour gamut: “The show should ship the optical benefits related to quantum dots, together with spectral precision, tunability and stability, improved colour accuracy conduct throughout luminance (not only a single 2D gamut quantity), and, the place relevant, temporal efficiency underneath backlight modulation.”
With TV advertising and marketing remaining murky—and sometimes deceptive—digging into detailed efficiency opinions stays essentially the most dependable approach to gauge how a show may carry out in the actual world.
