The LG BX OLED is the entry-level TV in LG's 2020 OLED lineup, and like most OLED TVs, it offers excellent overall performance. It has an infinite contrast ratio and perfect black uniformity, ideal for watching movies in dark rooms. Gamers should appreciate its FreeSync variable refresh rate (VRR) support and G-SYNC compatibility. It has a near-instant response time that results in clear motion, but that means lower-frame rate content appears to stutter. This TV has wide viewing angles, so it's a great choice for a wide seating arrangement. Even though it doesn't get bright enough to combat glare, it has outstanding reflection handling, so it performs well in most fairly-bright rooms. Sadly, like any OLED TV, it has the risk of permanent burn-in, but this should only be an issue with constant static elements, like if you use the TV as a PC monitor or if you only watch the news.
The LG BX OLED is an excellent overall TV. With its OLED technology, it can individually turn off pixels, resulting in an infinite contrast ratio and perfect black uniformity, so blacks appear black when viewed in the dark. It's outstanding for gaming because it has a near-instant response time, VRR support, and really low input lag. Sadly, it doesn't get very bright, so it's not ideal to use in extremely bright rooms. Lastly, it has wide viewing angles if you want to watch TV or sports with friends and family.
The LG BX is incredible for watching movies. With its OLED panel, it can individually turn off pixels. This results in an infinite contrast ratio and perfect black uniformity, making it an ideal choice for watching movies in dark rooms. It upscales lower-resolution content without any issues and removes 24p judder from any source, such as native apps or Blu-ray players.
The LG BX is great for watching TV shows. It has wide viewing angles, so you won't lose image accuracy if you tend to walk around while watching TV. It upscales 720p content, such as from cable boxes, without any problems. It has outstanding reflection handling, but it doesn't get bright enough to combat glare in well-lit rooms.
The LG BX is excellent for sports. Its near-instant response time results in minimal motion blur with fast-moving content, and there's no dirty screen effect in the center. You can easily watch the big game with a large group of friends thanks to its wide viewing angles. It doesn't get bright enough to combat glare, but luckily, it has outstanding reflection handling.
The LG BX is outstanding for gaming. It has a 120Hz panel and VRR support to reduce screen tearing. Its response time is nearly instantaneous, and it has a really low input lag. It's also a great choice for dark room gaming thanks to its OLED panel that displays extremely deep blacks and has perfect black uniformity.
The LG BX is excellent for HDR movies. Its OLED panel individually turns off pixels, resulting in an infinite contrast ratio and perfect black uniformity. HDR content looks great because it displays a very wide color gamut, but it doesn't get bright enough to truly make highlights pop in HDR. Also, lower frame rate content may stutter due to the TV's near-instant response time.
The LG BX OLED is excellent for HDR gaming. It's an outstanding choice for any gamer as it has FreeSync VRR support, a near-instant response time, and low input lag that stays low when gaming in HDR. It displays a wide color gamut, but sadly, it doesn't get bright enough to make some highlights stand out in HDR.
The LG BX is an excellent choice to use as a computer monitor. It has low input lag, wide viewing angles, and outstanding reflection handling. It displays chroma 4:4:4, and it has a near-instant response time. Unfortunately, like any OLED, it has the risk of permanent burn-in and may be a problem with constant exposure to static elements, such as a desktop's user interface.
The LG BX OLED is the entry-level TV in LG's 2020 4k OLED lineup. It sits below the LG CX OLED and it replaces the LG B9 OLED from 2019. There aren't many OLED TVs available, but its main competitors are the Sony A8H OLED and the Vizio OLED 2020, and it has a few LED competitors like the Samsung Q80T QLED.
The LG BX is very thin, and it won't stick out much if wall-mounted. It gets thicker with the stand attached, but it still doesn't take up a whole lot of space.
The LG BX has an excellent build quality. The plastic stand isn't as sturdy as the metal stand on the LG CX OLED, but it still holds the TV well. The plastic part near the inputs flexes a bit and makes a clicking noise as if it's not connected to the panel properly, but this could be an issue with our unit only. Besides that, there aren't any obvious problems, and it's a well-built TV.
Like all OLED TVs, the LG BX has an infinite contrast ratio since it can turn off individual pixels, resulting in perfect blacks.
The LG BX has just okay peak brightness. It's significantly less bright than the LG B9 OLED and doesn't get bright enough to combat glare in most rooms. It has an aggressive 'Automatic Brightness Limiter' (ABL) that dims the screen when large areas are bright, as seen in the dip in brightness in the 100% sustained window test.
These measurements were taken post-calibration in the 'Expert (Dark Room)' Picture Mode with Peak Brightness on 'High' and OLED Light on 'Max'. Originally, we had to run a Pixel Refresher because the screen seemed too dim compared to the LG B9 OLED, but the screen didn't get much brighter after the refresh. Before completing the Pixel Refresher, most scenes were between 334 to 394 cd/m², and we got 116 cd/m² in the 100% sustained window test.
If you want the brightest image possible, we were able to get 428 cd/m² in the 2% peak window test in 'Expert (Dark Room)' Picture Mode with OLED Light and Contrast set to 'Max', Peak Brightness on 'High', and Dynamic Contrast set to 'Medium'.
This TV doesn't have a backlight, so it doesn't have a local dimming feature. It can dim pixels individually, and subtitles are displayed perfectly, with no visible blooming.
This TV has mediocre HDR peak brightness. It doesn't get bright enough to truly bright out highlights in HDR, and due to its aggressive ABL, the screen gets less bright as large, bright areas cover the screen. If you want a similar TV that gets brighter in HDR, look into the LG GX OLED.
We measured the HDR peak brightness on the 'HDR Cinema' Picture Mode with Color Temperature set to 'Warm 2', Peak Brightness set to 'High', and OLED Light on 'Max'. Like with SDR peak brightness, we ran a Pixel Refresher and the screen got a bit brighter after. Before the Pixel Refresher, most scenes were between 358 to 534 cd/m², and we got 117 cd/m² in the 100% sustained window test.
If you want the brightest image possible, set the Picture Mode to 'Vivid', Dynamic Contrast to 'Medium', OLED Light and Contrast to 'Max', and Peak Brightness on 'High'. We were able to get 706.8 cd/m² with a 10% peak window.
The LG OLED55BXPUA has excellent gray uniformity, but this may vary between units. There's very little dirty screen effect in the center, which is great for sports fans. Uniformity is improved in near-dark scenes, but like some other OLED TVs, some faint vertical lines are visible in near-dark scenes in very dark rooms. Unlike the LG B9 OLED, the screen doesn't appear to flash in near-dark scenes.
Since this OLED TV can turn off individual pixels, black uniformity is perfect.
The LG BX OLED has excellent wide viewing angles, which is expected from an OLED TV. The image remains accurate when viewing from the side, great for wide seating arrangements.
The LG OLED55BXPUA has outstanding reflection handling, similar to the LG CX OLED. Even with direct sunlight on this TV, the reflections shouldn't be too distracting.
Update 12/09/2020: We remeasured the accuracy after calibrating our spectroradiometer. The review has been updated.
The LG BX has amazing out-of-the-box color accuracy, much better than the LG B9 OLED. There are minimal inaccuracies with colors and shades of gray, but since the color temperature is a bit cold, the image has a blue tint. Gamma follows the target well, but some scenes are a bit too bright. Note that out-of-the-box accuracy may vary between units.
The LG OLED55BXPUA has remarkable color accuracy after calibration, and any remaining inaccuracies can't be spotted without the aid of a colorimeter. Gamma follows the target almost perfectly, and the color temperature is extremely close to the 6500K target.
We measured the color accuracy after completing a Pixel Refresher, which only slightly improved the color accuracy. Unlike the LG B9 OLED, we didn't notice any black crushing during calibration. There was some in the 'Standard' Picture Mode, but there wasn't any in 'Expert (Dark Room)'.
You can see our recommended settings here.
The LG BX upscales 720p content, such as from cable boxes, well with no upscaling artifacts.
The LG BX displays 4k content without any issues. Even though it has an RGBW pixel structure, all four sub-pixels are never on at the same time, so there's no loss in color resolution.
The LG OLED55BXPUA has an excellent color gamut, very similar to the LG CX OLED. It covers almost all of the DCI P3 color space used in most HDR content, and it has decent coverage of the wider Rec. 2020 color space. Before we ran a Pixel Refresher on the TV, the DCI P3 and Rec. 2020 coverage were only slightly better, but the differences are insignificant.
The EOTF in 'Cinema HDR' mode follows the curve almost perfectly until it rolls off at its peak brightness. The EOTF in 'Game' mode is very similar, except the roll-off is a bit more smooth.
If you find HDR too dim, set the Picture Mode to 'Vivid', and you can see the EOTF here. Enabling Dynamic Tone Mapping makes the image brighter in our EOTF test, but it changes the brightness according to each scene, so your experience may vary.
This TV has good color volume. Due to its infinite contrast ratio, it displays dark colors extremely well but struggles to display brighter colors.
Note: Before performing a Pixel Refresher, it had a better DCI P3 color volume and slightly worse Rec. 2020 color volume, but most people won't notice the difference between the results before and after the refresh.
The LG BX has decent gradient handling. There's banding in every color, especially in the dark shades. Enabling the Smooth Gradation feature doesn't improve the test pattern. It slightly smooths out gradients in real scenes, but not by much. We ran a Pixel Refresher to see if it would improve the gradient handling, and it only improved a bit, but not significantly. If you want an OLED with significantly better gradient handling, look into the Vizio OLED 2020.
Sadly, the LG OLED55BXPUA has some temporary image retention after displaying a high-contrast image, similar to the LG C8 OLED or the LG CX OLED monitor we tested. This varies between units, so you may experience something different.
Note: The image retention after six minutes shows 0.0%, but this is an error on our end and there's indeed some visible image retention after six minutes.
Unfortunately, like all OLED TVs, the LG OLED55BXPUA isn't immune to permanent burn-in. However, we don't expect people who watch varied content to have any issues, but rather it's a problem if there are constant static displays, like if it's used as a PC monitor.
This TV has three features to help burn-in risk. Enabling Screen Shift option, and setting Logo Luminance Adjustment to 'Low' may help with this. There's also an automatic Pixel Refresher that can be run manually if needed.
You can read about our investigation into this here.
The LG BX has an incredible response time, but it's not as good as some other OLED TVs like the LG CX OLED. It has overshoot in the darker transitions, which may lead to motion artifacts in dark scenes.
There's a slight dip in brightness every eight ms, which coincides with the 120Hz refresh rate and isn't noticeable.
Update 02/17/2021: We retested the BFI feature to confirm the flicker frequency.
The LG OLED55BXPUA has a Black Frame Insertion feature to improve the appearance of motion. For it to work, set TruMotion to 'User' and change OLED Motion according to the content you're watching. Set it to 'High' if you're watching 60fps content because it flickers at 60Hz, and 'Low' or 'Medium' with 120fps content because it flickers at 120fps. If you set it to 'Medium' or 'Low' with 60fps content, there's noticeable image duplication. You may also notice some image duplication with 'Medium' with 120fps content, as seen here. Lastly, you can't use G-SYNC when the BFI feature is enabled.
This TV can interpolate content up to 120Hz, known as the 'Soap Opera Effect', which helps the appearance of motion. Motion looks alright with this feature and it doesn't stop interpolating in busy scenes, which results in some artifacts.
See here for the settings that control the motion interpolation feature.
Due to the TV's extremely fast response time, there's noticeable stutter with lower-frame rate content as each frame is held on longer. Enabling motion interpolation or the BFI feature can help reduce stutter.