There is a lot of tech behind the LG 2020 TV range. Rather than take it at face value lets explore what it means.
LG is one of the more conservative TV makers when it comes to using marketing jargon. So, we have a look at the tech and jargon behind its impressive LG 2020 TV range (GadgetGuy’s announcement and pricing here).
Tech behind the LG 2020 TV range
OLED – organic light-emitting diode
OLED produces the best picture – bar none! The secret is that each Pixel is self-emitting (lights on/off or dimmed). When a pixel is off it is 100% black hence contrast ratios (the difference between 100% black and 100% white) is infinite ∞:1.
LCD screens are usually around 1000-1500:1 as they can never reach true black. Even the top Quantum Dot FALD can only reach 3000-5000:1 contrast.
OLED means no ‘blooming’ (light appearing around darker solid colours) compared to TVs using local dimming zones.
LG currently makes the premium OLED TV panels used by many other brands although we understand that TCL uses its own CSOT Chinese-made panels and Hisense may be using BOE Chinese-made panels.
OLED has one drawback – called ‘washout’
It can occur when viewed in brightly light rooms. But even that has mostly been solved by Dolby Vision IQ and later technology reflectivity filters (over the OLED panel).
Having said that most rooms have reasonable light control (curtains/blinds) and frankly even the 2019 models from LG and Sony were still superior to LCD in typical ambient light conditions.
Some also say that OLED can suffer burn-in – the same image is on the screen for some time. Technically – yes. Practically – NO. These days OLED screen have screen savers so that is less of an issue.
4K OLED refers to the over 8 million pixels as individual dimming zones. Quantum Dot full array dimming typically has a ‘couple of hundred’ dimming zones. LED/LCD edge-lit typically has far less – usually under 30.
The LG OLED panels typically have a colour gamut of 95% DCI-P3 (movies) which is 69% Rec.2020 although there is a built-in pattern generator that can be used with X-Rite CalMAN calibration hardware to attain almost perfect results (98.68% DCI-P3).
Brightness’ numbers’ may not be what you expect when we talk about Dolby Vision later requiring 1000 nits or more. Typically, an OLED screen reaches HDR brightness of 725nits. But nits are measured as a percentage of the screen being 100% white. In small areas it reaches far higher.
SDR brightness is lower – around 335 nits. It does not require any more as there is no need to bring the extra definition or colours out.
And because OLED has 100% black and therefore uniform all over the screen it does not need as high a nits rating as LED/LCD and Quantum Dot.
or buy a NanoCell (Quantum Dot) TV instead
NanoCell is LG’s version of Quantum Dot (now a generic terms). Samsung have QLED (Series Q60/70/80/95), Sony (Triluminous), Hisense (Q8) and TCL (Series X).