Launched in the year 2022, the 55UQ90009LA is a 55" 4K TV from LG. It comes with a True 8-bit IPS panel.
The maximum resolution it can display is 3840 x 2160 with a refresh rate of 60 Hz and a pixel density of 80 ppi.
After screen size and resolution, the next most important feature of a display is its Color Reproduction (defined by its color gamut specification).
This TV doesn't come with a color gamut specification, but don't worry, we have other means to guess that.
As this TV features amassive 55 inch screen, it won't come with a cheap panel, so here we can assume its equivalent sRGB coverage to be 90-100% or above. The color quality on this TV should be Lifelike! Meaning it will produce accurate colors.
Understanding Color Gamut
Color gamut specification of a TV indicates the range of colors that the TV can show.
A display with poor color accuracy will produce washed out colors that will spoil the immersion.
Different manufacturers use different measurement standards to define color gamut. Such as — sRGB (most popular), NTSC, DCI P3 etc.
But you don't need to worry about that, here is a chart that will help you choosing a TV with good color accuracy.
Now, next in the list that will impact your experience is Static Contrast.
Understanding the static contrast ratio
There are 2 types of contrast specifications for a TV. Static and Dynamic. We are interested in static contrast ratio as dynamic doesn't matter much.
Static contrast defines the intensity of black levels. That is, a TV with SC ratio less than 1000:1 may produce black images something like this:
Apart from this, such TVs are likely be prone to backlight bleeds that will impact your experience — as shown below.The image is an example of another display, it is not this one
Static contrast ratio and resolution go hand in hand when it comes to details. To put it into perspective, a TV with low contrast ratio will produce less shades of colors, thus lesser detail overall.
There is no mention of this spec in the TV's official specsheet. So we have to make an assumption again based on the TV's other specs. FYI — IPS panels come with a static contrast ratio between 700:1 - 1500:1. For a 4K TV, we can guess the ratio of LG 55UQ90009LA to be no less than 1200:1.
HDR is also supported on this TV in form of HDR10 Pro and HLG (Hybrid Log Gamma).
As for brightness, it is can produce a maximum luminance of 250 nits, powered by Direct LED backlight.
If you are planning to use your TV solely for content consumption, you can safely ignore these specifications. But if you are also planning to use the TV for gaming or use it as a PC monitor, you would want to take a TV with the lowest input lag and response time.
Sadly, we cannot find the input lag specification for this unit. Now, since this is not a cheap TV from LG, we can expect an input lag of less than 20ms.
What is Input lag ?
This lag is the latency at which device inputs changes the content of the screen. For casual Non-FPS games, input lag doesn't matter much.
But ideally, get a TV that has an input lag and response time of less than 20ms.
Dimensions and Ergonomics
Vertically, the TV measures 55 inches and horizontally 48.62 inches. Speaking of thickness, it is 2.26 inches thick.
It weighs 14.0 kgs and an additional 0.2 kgs including stand. So plan your space accordingly.
Speaking of ergonomics — a VESA mount with interface size of 300 x 300 mm is provided for wall-mounting. However, there is no Swivel, Tilt or Pivot feature support on this TV.
Hardware and Audio
The core of this TV is powered by a Quad Core CPU. However, LG didn't provide any info on the available RAM on this TV.
The UI on this TV is powered by webOS 22 Operating System.
For display connectivity, there are three HDMI 2.0 ports on this TV.
To connect USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 1x Satellite In (F-type female), 1x Antenna (RF) (female), 1x CI+ 2.0 and 1x Ethernet RJ45.
For connecting to this TV wirelessly, the manufacturer has provided Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct, Bluetooth 5.0 and DLNA.
Speaking of speakers, it is packaged with 2 x 10W speakers.
Now, coming to power consumption, this TV consumes 82 Watts on average and 0.5 Watts on standby.
It supports a power outlet of 220 V - 240 V/50 Hz - 60 Hz.