55" UHD IR-Type Touch Interactive Digital Board

55" UHD IR-Type Touch Interactive Digital Board


55" UHD IR-Type Touch Interactive Digital Board

Front view with infill image

A New Level of Classroom with LG TR3DK series

Class is being conducted in the classroom, and the class material screen which is displayed on the classroom wall's TR3DK Digital Board is being shared on the students' tablets.

* All images in this page are for illustrative purposes only.

Various Teaching Templates

TR3DK series offers a variety of educational templates and teaching tools such as a ruler, table, and sticky notes, allowing for active engagement by students and enabling intuitive classes. Editing images and videos becomes easy with TR3DK series, and created resources can be easily shared with others through QR codes.

Students are solving problems using various ruler models on TR3DK Digital Board menu.


TR3DK Digital Board can simultaneously detect up to 40 points for multi-touch functionality. This creates a lifelike board touch experience, helping students easily become accustomed and truly engage in classes. This leads to the maximum concentration and organic engagement of students.

In the classroom, several students are simultaneously writing on the TR3DK Digital Board's screen.

* A max of 32 points are recognized in the Android environment, and a max of 40 points are detected in the Windows environment.
* Up to 10 points can be recognized in the writing app.

Easy to Save / Import / Export

TR3DK series include simple import and export functionality. Resources can be saved and imported directly to and from Google Drive or OneDrive, and files can be imported from a USB drive (Users can browse resources saved on USB storage).

Materials used to conduct class can be shared through TR3DK's import and export function after class.

Wireless ScreenShare

LG CreateBoard Share enables users to show up to 9 shared screens or a file on a screen in real-time when the LG CreateBoard Share app is installed on the device. Also, files from the host can be easily sent to any devices connected to the LG CreateBoard Share app, and several quick controls by the host are available.

TR3DK Digital Board can easily share screens with multiple devices in real time via app and website.

* TR3DK Digital Board also supports app-less sharing for PC (via website) and mobile devices within the same network.
* For a more stable connection, we recommend the installation of a dedicated app (LG CreateBoard Share).

LG ConnectedCare DMS

LG ConnectedCare DMS is a cloud solution for remotely monitoring, controlling, and managing the status of TR3DK Digital Board installed in educational environments. This feature enables IT managers to operate and manage important resources on operating devices without physically visiting sites.

an_it_manager_is_managing/controlling the status of the TR3DK Digital Board through LG ConnectedCare DMS.

* 'LG ConnectedCare DMS' needs to be purchased separately.
* The availability of the 'LG ConnectedCare DMS' service differs by region, so please contact the LG sales representative in your region for more details.
* LG ConnectedCare DMS supports the TR3DJ/TR3PJ/TR3DK Series as of now(plus more to come) under a cloud environment.

Remote-control / Scheduling

Frequently used controls such as the power on/off, scheduling, brightness, and screen lock functions can be applied using a remote control.

Broadcasting / Alert Messaging

Messages and a range of other content can be sent from the main system to individual classroom devices connected to LG ConnectedCare DMS. In case of urgent occasions such as a fire or a natural disaster, alert messages can be distributed manually across the system, which help teachers and students promptly take safety action.

the_user_can_set_a_threshold_for_receiving_an_warning/error signal for eight categories_ display temperature, CPU usage, etc. The current status of the issue is easily indicated in categories, enabling for quick real-time responses. Issues can be managed remotely with an LG ConnectedCare DMS solution.

Threshold Settings

Users can set thresholds in eight categories including display temperature, memory usage, or signal, and can receive warning or error notifications based on their threshold settings.

Monitoring & Fault Diagnosis

An engineer can check the status in real-time and diagnose problems remotely. Also, the current status of issues can be categorized, allowing for easy viewing and quick responses.

Issue Management

Remote issue management can be carried out by the LG ConnectedCare DMS solution. This makes management safer and more efficient, facilitating the stable operation of the classroom.

Bluetooth Connectivity

TR3DK Digital Board supports wireless Bluetooth connections to various devices such as a speaker, mouse, keyboard, etc. This is optimal for building a hybrid environment so that online and offline classes can proceed smoothly.

TR3DK Digital Board can wirelessly connect to devices such as keyboards, mice, and speakers via Bluetooth.

C-type Connection

USB-C connectivity simplifies connections which enables charging and sending data simultaneously over just one single cable.

TR3DK Digital Board easily transmits data via USB-C connectivity and can charge up to 65W.

* USB Type-C cables are sold separately.
Log in can be done easily with a QR code, saving class preparation time and enhancing personal information security by simply logging out.

QR Login for
Easy Cloud Access

The QR code on the home screen reduces preparation time for class by enabling personal device verification. Users can sign up for a variety of apps on the TR3DK Digital Board including Google Drive and OneDrive with just one QR verification without any additional login process. Once a lesson is finished, users can simply click the Logout button to disconnect, thus the risk of a personal information leak is reduced.
Thanks to the TR3DK Digital Board's flicker-free function, even if you look at the screen for a long time, you can use the device with more comfort.

Advanced Eye-Care

TR3DK Digital Board has introduced a flicker-free function. With the reduced flickering of the monitor's backlight, users can use the device with more comfort even when using it for a long time.
TR3DK Digital Board has ports on the front such as USB and HDMI.

Front Connectivity Design

TR3DK Digital Board features front display ports and speakers which are ideal for both teachers and students, enabling content to be delivered easier with more immersive sound.
The Built-in OPS slot makes mounting an OPS easy, providing users with more extended functionality without the use of external desktops.

Built-in OPS Slot

TR3DK Digital Board supports OPS slots, allowing you to easily and conveniently mount OPS desktop at the back of the TR3DK Digital Board without the hassle of connecting to an external desktop, offering you more expanded functions.

* OPS : Open Pluggable Specification
The Smart Viewing function includes a multi-window mode that displays data side by side as well as a picture-in-picture mode that can override other data on top of the displayed data.

Smart Viewing

The Smart Viewing feature of TR3DK Digital Board enables efficient teaching. Two or more materials can be displayed on the same screen simultaneously without having to repeat Alt-tab, making teaching more convenient and efficient. Two materials can be displayed side by side (multi window mode), or one material can be overlaid on the other one (picture-in-picture mode).

* Multi window mode may not work for some apps.
* PIP mode is available for the external source screen.
If there is no input for a certain period of time, it changes to standby mode, and it can be turned on or off automatically by setting the time, thus saving power.

Power Saving

When a device doesn’t receive an external input signal for a specific amount of time set by the user, the device goes into standby mode. Devices can also be automatically turned on or off at specific time or day set by the user, which contributes to save energy.

Secure Function

Screen Lock

Teachers can lock the screen using the Screen Lock function, and unlock it by entering a password. Users can set the Screen Lock in the Settings menu to protect the device from unidentified users.

Secure Mode

TR3DK Digital Board supports Secure Mode that disables the LG CreateBoard Share function to prevent unauthorized content from being shown on various devices.

USB Lock Mode

USB Lock Mode is a security measure that helps prevent data from being copied to unauthorized devices, which is essential when being used in spaces where security is critical.

Auto-remove Files

Users can set TR3DK Digital Board to delete files regularly for enhanced security.

All Spec


  • Screen Size (Inch)


  • Panel Technology


  • Back Light Type


  • Aspect Ratio


  • Native Resolution

    3840 x 2160 (UHD)

  • Refresh Rate


  • Brightness

    390nit (Typ., without Glass)

  • Contrast Ratio


  • Dynamic CR


  • Color Gamut

    NTSC 72%

  • Viewing Angle (H x V)

    178º x 178º

  • Color Depth (Number of Colors)

    16.7 Million colors

  • Response Time

    8ms (G to G)

  • Surface Treatment (Haze)

    Haze 25%

  • Life time

    50,000Hrs (L30)

  • Operation Hours (Hours/Day)


  • Portait / Landscape

    NO / YES


  • HDMI In

    YES (3ea)

  • HDMI In (HDCP Ver.)


  • DP In


  • DVI-D In


  • RGB In


  • Audio In


  • RS232C In


  • RJ45(LAN) In

    YES (1ea)

  • IR In


  • USB In

    USB3.0 Type A (4ea), USB2.0 Type A (1ea), USB Type C (1ea)

  • HDMI Out


  • DP Out


  • Audio Out


  • Touch USB

    USB2.0 Type B (2ea)

  • External Speaker Out


  • RS232C Out


  • RJ45(LAN) Out



  • Bezel Color


  • Bezel Width

    T/R/L/B : 18/18/18/45mm

  • Weight (Head)


  • Packed Weight


  • Monitor Dimensions (W x H x D)

    1271 × 774 × 87mm

  • Handle


  • VESA Standard Mount Interface

    400 x 200 mm

  • Carton Dimensions (W x H x D)

    1401 × 859 × 220mm


  • Internal Memory (eMMC)


  • Wi-Fi/BT (Built-in)


  • Temperature Sensor


  • Auto Brightness Sensor


  • Power Indicator


  • Local Key Operation



  • Booting Logo Image


  • PIP


  • PBP

    YES (2PBP)

  • Screen Share


  • Setting Data Cloning


  • Crestron Connected


  • Smart Energy Saving


  • PM mode


  • Wake on LAN


  • Network Ready





  • Operation Temperature

    0 °C to 40 °C

  • Operation Humidity

    10 % to 90 %


  • Power Supply

    AC 100-240V~, 50/60Hz

  • Power Type

    Built-in Power


  • Typ.


  • Max.


  • BTU (British Thermal Unit)

    580 BTU/Hr(Typ.), 1348 BTU/Hr(Max.)

  • DPM


  • Power off



  • Speaker (Built-in)

    YES (15W x 2)


  • Safety

    CB / NRTL

  • EMC

    FCC Class "A" / CE

  • ERP / Energy Star

    YES / NO


  • OPS Type compatible

    YES (Slot)

  • OPS Power Built-in



  • Connected Care



  • OSD

    English, Denmark, Finnish, German, Korean, Norwegian, Polski, Portugues(Europe), Portugues(Brazil), Romanian, Spanish, Swedish, Hungarian, Thai


  • Basic

    Power Cord 3M*1, USB Cable (Type A-Type B) 5M*1, HDMI Cable 3M*1, Writing Pen*2pcs, User Manual, QSG, Carton Box, Remote Controller(include battery 2ea), Wifi module

  • Optional

    Wall Mount(WM-L000S), Floor Stand(ST-000F, ST-860F)


  • Conformal Coating (Power Board)



  • Available Object Size for Touch

    Ø2 mm ↑

  • Response Time ('Paint' app on Windows 10 PC)

    5ms ↓

  • Accuracy (Typ.)


  • Interface


  • Protection Glass Thickness

    3mm (Anti-Glare)

  • Protection Glass Transmission


  • Operating System Support

    Windows 7/8/10/Linux/Mac/Android (Linux/Mac Support one point touch)

  • Multi Touch Point

    Max. 40 Points(Windows), Max. 32 Points(Android)


  • CPU

    Quad core A55

  • GPU

    Mail G52 Multicore 2

  • Memory(RAM)


  • Storage


  • Wi-Fi

    802.11a/b/g/n/ac/ax (WiFi 6)

  • LAN

    Gigabit LAN

  • Bluetooth

    Bluetooth 5.0

  • OS ver. (Android)

    Android 11