1-on-1 Comparison

Side-by-Side Comparison

LG OLED77Z19LA

LG 55UK7550PLA

SCORE:
97
SCORE:
87

Highlights

  • 8K UHD (7680 x 4320) OLED Display
  • HDR10, Dolby Vision, HLG support
  • Perfect Colour (Wide Color Gamut)
  • Perfect Viewing Angle
  • α9 Gen4 AI Processor 4K
  • Ethernet, Wi-Fi, Bluetooth

Highlights

  • 4K UHD (3840 x 2160) NanoCell Display
  • HDR10, HLG support
  • Wide Color Gamut
  • Wide Viewing Angle
  • Quad Core Processor
  • Ethernet, Wi-Fi, Bluetooth

Disclosure: We earn money from the affiliate links to products associated with content in this article.

Content

Overview

Here we are comparing LG OLED77Z19LA to LG 55UK7550PLA to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. The LG OLED77Z19LA has 8K UHD (7680 x 4320) and the LG 55UK7550PLA has 4K UHD (3840 x 2160) resolution and they both support HDR.

We have evaluated the TVs from available features and specifications. LG OLED77Z19LA gets higher overall score in our ranking system which is based on the display specifications, video, audio and other features, connectivity and format support.

LG OLED77Z19LA

LG 55UK7550PLA

DISPLAY
98
VIDEO FEATURES
96
AUDIO FEATURES
97
OTHER FEATURES
100
CONNECTIVITY
94
FORMAT SUPPORT
88
OVERALL
97
DISPLAY
89
VIDEO FEATURES
88
AUDIO FEATURES
82
OTHER FEATURES
79
CONNECTIVITY
91
FORMAT SUPPORT
85
OVERALL
87
 
 

Advantage of LG OLED77Z19LA

This section shows the features and specifications which are the reason to choose LG OLED77Z19LA over LG 55UK7550PLA.

LG OLED77Z19LA vs LG 55UK7550PLA
Higher Resolution 8K UHD (7680 x 4320) vs 4K UHD (3840 x 2160)
Higher Refresh Rate 100 Hz/120 Hz vs 50 Hz/60 Hz
Backlight Dimming Pixel Level Dimming vs Local Dimming
Color Perfect Colour (Wide Color Gamut) vs Wide Color Gamut
Higher Panel Bit Depth 10 bits vs 8 bits + FRC
Higher Contrast Ratio vs 1400∶1
Lower Minimum Response Time 1 ms vs 8 ms
Dolby Vision vs
AMD Freesync™ vs
NVidia G-Sync vs
4K HFR vs
2K HFR vs
VRR vs
HGIG Compatibility vs
More Powerful Picture Processor α9 Gen4 AI Processor 4K vs Quad Core Processor
Higher Frame Interpolation Frequency 200 Hz vs 100 Hz
Filmmaker Mode vs
Auto Low Latency Mode vs
AI Picture AI Picture Pro 8K vs
Auto Genre Selection SDR/HDR/Dolby HDR vs
Face Enhancing AI Picture Pro - Face + Body+ object Enhancing vs
Image Enhancing Image Enhancing on SQM vs
Noise Reduction Quad Step Noise Reduction vs NR
Deep Learning AI Picture vs
AI Brightness vs
True Color Accuracy Pro vs
Ultra Luminance Pro vs
Sharpness Frequency based Sharpness Enhancer vs
Dynamic Tone Mapping HDR Dynamic Tone Mapping Pro vs Dynamic Tone Mapping
More Speaker Channels 4.2 Channel vs 2.0 Channel
Higher Speaker Poer Rating 60W (WF:20W, 10W per Channel) vs 20 W
AI Sound AI Sound Pro vs
Clear Voice Clear Voice Pro vs Clear Voice III
WiSA Ready Up to 5.1 Channel (Separate Dongle Purchase Required) vs
Smart Speaker Compatible vs
LG Smart Speaker vs
Newer Bluetooth Version 5.0 vs 4.2
Apple Airplay Airplay 2 vs
LG TV Plus App vs
Smart ThinQ App vs
HDMI Version 2.1 vs 2.0b
HDCP Version 2.3 vs 2.2
More USB Inputs 3 vs 2
More RF (Terrestrial/Cable) Connection Inputs 3 vs 2
3.5mm headphone Audio Output vs
On-Screen Display Languages 37 vs 36
Amazon Echo Compatible vs
AI UX vs
AI Home vs
AI Recommendation Default: off vs
Intelligent Edit vs
Home Dashboard vs
Auto Device Detection vs
Apple HomePod vs
Magic Link Default: off vs
Gallery Mode vs
Multi-view vs
360 VR vs
Mobile TV On vs
Wi-Fi TV On vs
Bluetooth Low Energy On vs
Instant Game Response VRR/ALLM/HGIG vs
Screen Share vs
Auto Calibration vs
Time Machine (DVR) vs
AVI vs
VP8 vs
AC4 vs
EAC3 vs
MP2 vs
More Tuners (Terrestrial/Cable) 2 vs 1

Advantage of LG 55UK7550PLA

This section shows the features and specifications which are the reason to choose LG 55UK7550PLA over LG OLED77Z19LA.

LG OLED77Z19LA vs LG 55UK7550PLA
DTS Digital Surround vs DTS-HD
Component Inputs vs 1 via A/V 3.5mm Jack
Composite Inputs vs 1 via A/V 3.5mm Jack
OGG vs
RealAudio vs
Higher Energy Efficiency Class G vs A

Common Strengths and Weaknesses

STRENGTHS
  High Resolution
  Perfect Viewing Angle
  Color Depth
  HDR10
  HLG
  Dolby Atmos
  Bluetooth Audio Playback
  Wi-Fi
  Wi-Fi Direct
  Bluetooth
  Works with Alexa
WEAKNESSES
  No HDR10+
  No IMAX Enhanced

Selected Features

OLED display on LG OLED77Z19LA

LG OLED77Z19LA has an organic light-emitting diode (OLED) display. This is a self-emissive display which can completely turn off individual pixels leading to the ideal black levels and better contrast during HDR compared to any LCD displays. This makes them to be the best choice for dark rooms. OLED enables a simpler internal structure than conventional displays. With just a few layers, OLED TVs are very lightweight and thin. OLED displays also have better viewing angles. However, they are not able to achieve such high brightness as modern LCD displays which makes them less suitable in bright rooms.

IPS Panel on LG 55UK7550PLA

LG 55UK7550PLA has an in-plane switching (IPS) panel. Such panels are not commonly used in LCD TVs as they suffer from light leakage which lead to the lower contrast and poor HDR experience. However, this type of panels can provide better viewing angles and color accuracy compared to the VA panels.

HDR10

LG OLED77Z19LA and LG 55UK7550PLA support HDR10 which was announced on August 27, 2015, by the Consumer Technology Association and uses the wide-gamut Rec. 2020 color space. It is not backward compatible with SDR. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 is technically limited to a maximum of 10,000 nits of brightness and uses 10-bit color which corresponds to 1024 shades of the primary RGB colors.

Dolby Vision on LG OLED77Z19LA

LG OLED77Z19LA also supports Dolby Vision which is an update to HDR10 by adding dynamic metadata that can be used to more accurately adjust brightness levels up to 10,000 nits on a scene-by-scene or frame-by-frame basis and supports up to 12-bit color depth (4096 shades of RGB) and 8K resolution.

Specifications

And in the end we display all the specifications which are present for both models.

Note: The following table shows only those details which are applicable for both models and excludes the ones that are applicable for only one model. If you want to see a full list of specs for each model please visit their individual pages here - LG OLED77Z19LA and here - LG 55UK7550PLA.

BASICS LG OLED77Z19LA LG 55UK7550PLA
BrandLGLG
SeriesZ1 SignatureUK75
ModelOLED77Z19LA55UK7550PLA
Size77"55"
CountryUKUK
Release Year20212018
Smart TV
DISPLAY LG OLED77Z19LA LG 55UK7550PLA
Display TypeOLEDNanoCell
Actual Size (Diagonal)76.7"54.6"
Resolution8K UHD (7680 x 4320)4K UHD (3840 x 2160)
Refresh Rate100 Hz/120 Hz50 Hz/60 Hz
Screen DesignFlatFlat
Backlight DimmingPixel Level DimmingLocal Dimming
ColorPerfect Colour (Wide Color Gamut)Wide Color Gamut
Viewing AnglePerfect Viewing AngleWide Viewing Angle
Panel Bit Depth10 bits8 bits + FRC
Color Depth1.07 Billion1.07 Billion
Contrast Ratio1400∶1
Minimum Response Time1 ms8 ms
VIDEO LG OLED77Z19LA LG 55UK7550PLA
3D Capability
HDR10
HDR10+
Dolby Vision
HLG
Advanced HDR by Technicolor®
IMAX Enhanced
4K HDRCinema HDR4K Active HDR
AMD Freesync™
NVidia G-Sync
4K HFR
2K HFR
VRR
HGIG Compatibility
Picture Processorα9 Gen4 AI Processor 4KQuad Core Processor
UpscalingAI 8K Upscaling4K Upscaling
Frame Interploation TechniqueTruMotion 200TruMotion 100
Frame Interpolation Frequency200 Hz100 Hz
Filmmaker Mode
Auto Low Latency Mode
AI Picture AI Picture Pro 8K
Auto Genre Selection SDR/HDR/Dolby HDR
Face EnhancingAI Picture Pro - Face + Body+ object Enhancing
Image Enhancing Image Enhancing on SQM
Color Enhancer Advanced Color Enhancer Dynamic Color
Noise ReductionQuad Step Noise Reduction NR
Deep Learning AI Picture
AI Brightness
True Color Accuracy Pro
Ultra Luminance Pro
SharpnessFrequency based Sharpness Enhancer
Dynamic Tone MappingHDR Dynamic Tone Mapping ProDynamic Tone Mapping
AUDIO LG OLED77Z19LA LG 55UK7550PLA
Speaker Channels4.2 Channel2.0 Channel
Speaker TypeDown FiringDown Firing
Speaker Poer Rating60W (WF:20W, 10W per Channel)20 W
Dolby Atmos
DTS Digital Surround DTS-HD
AI Sound AI Sound Pro
Surround ModeOLED SurroundDTS Virtual:X
Clear VoiceClear Voice ProClear Voice III
WiSA Ready Up to 5.1 Channel (Separate Dongle Purchase Required)
Bluetooth Audio Playback
LG Sound Sync
Smart Speaker Compatible
LG Smart Speaker
CONNECTIVITY LG OLED77Z19LA LG 55UK7550PLA
Ethernet Input
Wi-Fi
Wi-Fi Direct
Wi-Fi Frequency2.4 GHz, 5 GHz2.4 GHz, 5 GHz
Wi-Fi Protocol802.11a/b/g/n/ac802.11a/b/g/n/ac
Bluetooth
Bluetooth Version5.04.2
Apple Airplay Airplay 2
LG TV Plus App
Smart ThinQ App
Chromecast
Google Home Google Home device sold separately Google Home device sold separately (This feature is not available in Republic of Ireland)
Virtual Assistant Google Assistant Google Assistant Built-in Google Assistant features require software update (This feature is not available in Republic of Ireland)
Works with Alexa Alexa Built-In Amazon Alexa device sold separately (This feature is not available in Republic of Ireland)
HDMI Inputs44
HDMI Version2.12.0b
HDMI Audio Return Channel (ARC) eARC (HDMI 2) HDMI 2
HDCP Version2.32.2
HDMI-CEC SIMPLINK SIMPLINK
USB Inputs32
USB 3.0 Ports
RF (Terrestrial / Cable ) Inputs32
Component Inputs1 via A/V 3.5mm Jack
Composite Inputs1 via A/V 3.5mm Jack
RCA Audio Outputs
3.5mm headphone Audio Output
Optical Audio Output
RS-232C Remote
DLNA
OTHER LG OLED77Z19LA LG 55UK7550PLA
CPU Cores44
GPU Cores22
Operating SystemwebOSwebOS
Internet Browser Full Web Browser
Electronic Program Guide (EPG) 8 days 8 days
Application Store LG Content Store LG Content Store
On-Screen Display Languages3736
LG AI ThinQ®
Speech to Text
LG Voice Search
Amazon Echo Compatible
AI UX
AI Home
AI RecommendationDefault: off
Intelligent Edit
Home Dashboard
Auto Device Detection
Apple HomePod
Voice Recognition Intelligent Voice Recognition Intelligent Voice Recognition
Magic LinkDefault: off
Audio Guidance (Text To Speech)
Gallery Mode
Multi-view
DIAL
360 VR
Mobile TV On
Wi-Fi TV On
Bluetooth Low Energy On
Instant Game Response VRR/ALLM/HGIG
Screen Share
Time Shift
Auto Calibration
Time Machine (DVR)
HEVC 8K@60p, 10bit and 4K@120p, 10bit
VIDEO FORMATS LG OLED77Z19LA LG 55UK7550PLA
3GPP
AV1 8K@60p, 10bit
AVI
ASF
DivX
Flash Video
H.263
H.264
H.265
MKV
M2TS
MP4
MPEG-4
QuickTime
RealVideo
TS
VC-1
VP7
VP8
VP9 8K@60p, 10bit
VOB
VRO
WebM
WMV
Xvid
AUDIO FORMATS LG OLED77Z19LA LG 55UK7550PLA
AAC
AC4
AIFF
ALAC
APE
aptX
eAAC+
EAC3
FLAC
HE-AAC
LPCM
M4A
MIDI
MP2
MP3
OGG
RealAudio
WMA
WAV
IMAGE FORMATS LG OLED77Z19LA LG 55UK7550PLA
BMP
GIF
JPEG
JPS
MPO
PNG
TUNER LG OLED77Z19LA LG 55UK7550PLA
Digital Tuner 2 1
SAT Tuner
Analog TunerPAL/SECAM, B/G, D/K, I, SECAM LPAL/SECAM, B/G, D/K, I, SECAM L
Digital Terrestrial TV SystemDVB-T/T2DVB-T/T2
Digital Cable TV SystemDVB-CDVB-C
Digital SAT TV SystemDVB-S/S2DVB-S/S2
Color systemPAL / SECAM / NTSCPAL / SECAM / NTSC
CI+CI+ 1.4CI+ 1.4
GENERAL LG OLED77Z19LA LG 55UK7550PLA
Energy EfficiencyGA
Power SupplyAC 100-240 V, 50/60 HzAC 100-240 V, 50/60 Hz
Power Consumption (In Standby)0.5 W0.5 W
Dimension Without Stand (W x H x D)1717 x 984 x 32.2 mm1237 mm x 721 mm x 64 mm
Dimension With Stand (W x H x D)1717 x 1044 x 323 mm1237 mm x 794 mm x 248 mm
Dimension of Package (W x H x D)1895 x 1130 x 228 mm
74.61" x 44.49" x 8.98"
1360 mm x 880 mm x 175 mm
VESA Wall Mount
VESA Hole Pitch (W x H)400 mm x 400 mm300 mm x 300 mm
Weight Without Stand42.6 kg / 93.92 lbs16.1 kg
Weight With Stand43.4 kg / 95.68 lbs17.6 kg
Weight of Package (Gross)56.4 kg / 124.34 lbs22.8 kg
ACCESSORIES LG OLED77Z19LA LG 55UK7550PLA
RemoteSignature Magic Remote Control - PM21NMagic Remote Control - AN-MR18
Universal Control Capability for remote
Magic Remote Control Compatible

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