LG UR340C Series 55UR340C9UD 55"
Built for 16/7 commercial operation, this 55-inch 4K display stands out with USB data cloning and Crestron Connected certification for streamlined multi-display management. Its 400-nit brightness and HDR10 support deliver adequate picture quality for indoor signage, complemented by a slim design and customizable greeting feature. This display is best for IT managers deploying digital signage in corporate lobbies or retail environments where centralized control and reliability matter more than gaming performance.
Snapshot
Pros & Cons
Pros
- Strong picture quality (74th percentile) 74th
- Strong display (67th percentile) 67th
Cons
- Below average gaming (1st percentile)
- Below average user sentiment (6th percentile)
- Below average smart (28th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 1 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Display
| Size | 55" |
| Resolution | 4K |
| Panel Type | LED |
| Backlight | Direct LED |
| Aspect Ratio | 16:9 |
| Curved | No |
Picture Quality
| Brightness | 400 nits |
| Contrast Ratio | 1300:1 |
| Motion Tech | Motion Eye Care |
HDR
| HDR Formats | HDR10, HLG |
| Dolby Vision | No |
| HDR10+ | No |
| HLG | Yes |
Gaming
| Refresh Rate | 60 Hz |
| Response Time | 14 |
| ALLM | No |
| Game Mode | No |
Smart TV
| Platform | webOS |
Audio
| Speaker Config | 2 |
| Wattage | 20 |
| Dolby Atmos | No |
| eARC | Yes |
Connectivity
| HDMI Ports | 3 |
| HDMI Version | 2 |
| USB Ports | 1 |
| Ethernet | Yes |
| Optical Audio | Yes |
| VESA Mount | 300x300 |
Power & Size
| Power | 135 |
| Energy Star | No |
| Weight | 14.0 kg / 30.9 lbs |
vs Competition
| Spec | LG UR340C Series 55UR340C9UD 55" | Sony BRAVIA 9 K85XR90 | Samsung Neo QLED QN900F | Hisense U7 Series 75U75QG | TCL QM7K Series 55QM7K | Roku Pro Series 65R8C5 |
|---|---|---|---|---|---|---|
| Screen Size | 55 | 85 | 85 | 75 | 55 | 65 |
| Resolution | 3840x2160 | 3840x2160 | 7680x4320 | 4K | 3840x2160 | 3840x2160 |
| Panel Type | LED | Mini-LED | Mini-LED | Mini-LED | Mini-LED | Mini-LED |
| Refresh Rate | 60 | 120 | 120 | 165 | 144 | 120 |
| Hdr | HDR10, HLG | HDR 10, Hybrid Log-Gamma (HLG), Dolby Vision | HDR10, HDR10+, HLG | Dolby Vision, HDR 10+, HDR 10, Hybrid Log-Gamma (HLG) | Dolby Vision, HDR 10+, HDR 10, Hybrid Log-Gamma (HLG) | Dolby Vision, HDR 10+, Hybrid Log-Gamma (HLG) |
| Smart Platform | webOS | Google TV | Tizen | Google TV | Google TV | Roku TV |
| Dolby Vision | false | true | false | true | true | true |
| Dolby Atmos | false | true | true | true | true | true |
| Hdmi Version | 2.0 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Hdr | Audio | Smart | Gaming | Display | User Sentiment | Connectivity | Social Proof | Picture Quality |
|---|---|---|---|---|---|---|---|---|---|
| LG UR340C Series 55UR340C9UD 55" | 63 | 45.9 | 28.4 | 0.6 | 67.1 | 5.9 | 50.7 | 54.9 | 73.8 |
| Sony BRAVIA 9 K85XR90 Compare | 76.2 | 96.6 | 91.9 | 78.5 | 94.1 | 69.8 | 93 | 87.9 | 79.1 |
| Samsung Neo QLED QN900F Compare | 93.8 | 98.9 | 77.4 | 88.1 | 99.7 | 69.8 | 96.7 | 99.9 | 93.6 |
| Hisense U7 Series 75U75QG Compare | 91.2 | 93.4 | 95.8 | 94.9 | 49 | 93.4 | 96.7 | 87.9 | 97.8 |
| TCL QM7K Series 55QM7K Compare | 91.2 | 68.9 | 97.5 | 93.3 | 79.1 | 93.4 | 89 | 87.9 | 98.1 |
| Roku Pro Series 65R8C5 Compare | 76.2 | 84.7 | 85.3 | 88.1 | 84.1 | 0 | 93 | 94.5 | 36 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
