LG Transparent OLED 55EW5Q-C 55-inch Signage Display

Overview

The LG 55EW5Q-C is a 55-inch transparent OLED signage display that lets viewers see through the panel while content appears in front of the objects behind it. It offers a 1920x1080 resolution, 43% transparency, a 200,000:1 contrast ratio and webOS 7.5 with SuperSign software support. It suits shop windows, hotel lobbies and corporate receptions in Doha, West Bay and Lusail where the view behind the screen matters. Request a quote today.

What this transparent OLED panel does

The 55EW5Q-C is a 55-inch transparent OLED signage display built for places where the space behind the glass matters as much as the message. Its OLED layer produces its own light, so the panel needs neither a backlight nor a liquid crystal layer. LG rates it at 43% transparency (SET), based on its own 2022 internal test using a hazemeter. Viewers can still see products, interiors or people behind the screen while text and images appear in front of them.

Specifications that matter for a purchase decision

Resolution: 1920x1080 (FHD) on a 16:9 panel, usable in landscape or portrait orientation.
Brightness: 200 nit at APL 100% and 600 nit at APL 25%, measured without glass.
Motion: 120 Hz refresh rate with 0.1 ms grey-to-grey response time.
Contrast and colour: 200,000:1 contrast ratio and DCI 90% colour gamut.
Front glass: 3.0 mm chemically strengthened, shatter-proof glass with anti-reflective film and 5H hard coating.
Rated life: 30,000 hours typical, with an operating schedule of 18 hours a day, 7 days a week, for moving content only.

Front glass matters in busy public areas. The 3.0 mm chemically strengthened layer is designed to limit injury if someone knocks into the screen, and the 5H coating is rated against scratches from everyday cleaning and handling.

Where it fits in Qatar

Three situations suit this model well:

A jewellery or fashion boutique on The Pearl or in West Bay that wants new collections visible from the street while shoppers still see the interior.
A hotel lobby in Doha or a serviced apartment reception that shows arrival information and dining offers over the lounge behind it.
A corporate reception in Lusail or Msheireb that displays a bilingual welcome message without blocking the office beyond.

Keep the panel in air-conditioned interiors. The operating range is 0 to 40 °C with 10 to 80% humidity, while Qatar summers regularly pass 45 °C. Set it back from sun-exposed glazing and ask for a site survey, because a window-facing position can add heat and glare.

Planning the installation and power

The head weighs 11.6 kg and measures 1225.5 x 810.1 x 14.6 mm. The signage box weighs 2.6 kg and connects to the head with the MCX harness cables supplied. Two wing brackets, cable holders, rubber dampers and mounting screws are included. The panel is supplied as a semi-assembled display, so the wall structure and fixing points should be confirmed on site before delivery.

Power input is AC 100-240V at 50/60Hz with built-in power. Typical consumption is 70W and maximum is 230W, equal to 239 BTU/hr typical and 785 BTU/hr maximum. Those BTU figures are useful when sizing air-conditioning for a small meeting room or lobby. Confirm the plug fitting for your site with the SmartRooms Qatar team before ordering.

Software, connectivity and certification

The panel runs webOS 7.5 with 16GB of internal eMMC storage. The software list includes SuperSign CMS, SuperSign Control+, SuperSign Cloud, Mobile CMS and Connected Care, plus local contents scheduling, USB plug and play, group manager, fail over and Wake on LAN. Inputs are one HDMI and one DisplayPort, with a DisplayPort output for daisy-chaining. Control ports include RS232C, LAN and IR, with two USB 2.0 Type A ports and an audio output. Certifications listed are CB/NRTL for safety, FCC Class A, CE and KC for EMC, and ErP compliance.

Send your site plan, unit count and mounting locations to SmartRooms Qatar and request a quote. Quotations usually arrive within one working day, and we accept purchase orders and government tenders, including Monaqasat. Free site surveys are available before you commit.

Highlights

55-inch transparent OLED panel with 1920x1080 FHD resolution
43% transparency (SET) with 200,000:1 contrast ratio
3.0 mm chemically strengthened, shatter-proof front glass
120 Hz refresh rate and 0.1 ms grey-to-grey response
webOS 7.5 with SuperSign CMS and Connected Care support
Operating range 0 to 40 °C, 10 to 80% humidity

Estimated timeline

Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.

Specifications

87 specifications · Source: manufacturer · checked Oct 2026

Info3

Product: OLED (Transparent)
Year: Y24
Month: M12

Panel17

Screen Size (Inch): 55"
Panel Technology: OLED
Back Light Type: OLED
Aspect Ratio: 16:9
Native Resolution: 1920x1080 (FHD)
Refresh Rate: 120 Hz
Brightness: 200/600nit (APL 100%/25%, Without Glass)
Contrast Ratio: 200,000 : 1
Color gamut: DCI 90%, BT709 110%
Viewing Angle (H x V): 178x178
Color Depth (Number of Colors): 10bit(R), 1.07Bilion colors
Response Time: 0.1ms (G to G), 8ms (MPRT)
Surface Treatment (Haze): Haze 3% (SET), Hard coating (5H)
Life time: 30,000 Hrs (Typ.)
Operation Hours (Hours/Day): 18/7 (Moving Content Only)
Portait / Landscape: Yes / Yes
Transparency: 43% (SET)

Connectivity (Jack Interface)12

HDMI IN: Yes(1), HDCP 2.2/1.4
DP IN: Yes(1), HDCP1.3
RS232C IN: Yes(1)
RJ45(LAN) IN: Yes(1)
IR IN: Yes(1), External IR Receiver
USB IN: USB2.0 Type A(2)
DP Out: Yes(1)
Audio Out: Yes(1)
RS232C Out: Yes(1)
RJ45(LAN) Out: Yes(1)
IR Out: Sharing RS232C Out
Daisy Chain: Input HDMI, DP / Output DP

Mechanical6

Bezel Color: Transparent
Bezel Width: T/R/L/B : 7.9/7.9/7.9/121.8mm
Weight (Head): 11.6Kg (Head), 2.6Kg (Signage Box)
Packed Weight: 21.9Kg
Monitor Dimensions (W x H x D): 1225.5 x 810.1 x 14.6mm (Head) 381.6 x 217.6 x 73.6 (Signage Box)
Carton Dimensions (W x H x D): 1345 x 920 x 246mm

Protection Glass4

Thickness: 3.0mm
Tempered / Chemical strengthening: Chemical strengthening
Anti-Reflective: Yes (Film)
Shatter-Proof: Yes

HW Feature2

Internal Memory (eMMC): 16GB
Temperature Sensor: Yes

SW Feature23

OS Ver. (webOS): webOS7.5
Local Contents Scheduling: Yes
Group Manager: Yes
USB Plug & Play: Yes
Fail over: Yes
RS232C Sync: Yes
Local Network Sync: Yes
Video Tag: Yes(4)
Screen Rotation: Yes
External Input Rotation: Yes
Gapless Playback: Yes
Tile Mode Setting: Yes
Setting Data Cloning: Yes
SNMP: Yes
ISM Method: Yes
Auto Set ID: Yes
Status Mailing: Yes
Control Manager: Yes
PM mode: Yes
Wake on LAN: Yes
HDMI-CEC: Yes
SI Server Setting: Yes
Scan Inversion: Yes

Environment Conditions2

Operation Temperature: 0 °C to 40 °C
Operation Humidity: 10 % to 80 %

Power2

Power Supply: AC 100-240V~, 50/60Hz
Power Type: Built-In Power

POWER<br>Consumption5

Typ.: 70W (IEC 62087)
Max.: 230W
BTU (British Thermal Unit): 239 BTU/Hr(Typ), 785 BTU/Hr(Max.)
DPM: 0.5W
Power off: 0.5W

Certification3

Safety: CB / NRTL
EMC: FCC Class "A" / CE / KC
ErP / Energy Star: Yes / No

Software Compatibility5

SuperSign CMS: Yes
SuperSign Control+: Yes
SuperSign Cloud: Yes
Mobile CMS: Yes
Connected Care: Yes

Language1

OSD: English, French, German, Spanish, Italian, Korean, Chinese(Simplified), Chinese(Original), Portuguese(Brazil), Swedish, Finnish, Norwegian, Danish, Russian, Japanese, Portuguese(Europe), Dutch, Czech, Greek, Polish, Turkish, Arabic

Accessory1

Basic: Remote Controller(include battery 2ea), Power Cord, QSG, IR receiver, Regulation Book, Phone to RS232C Gender, MCX/Harness Cables(1000mmx4ea/1000mmx2ea) for connection between panel and Signage Box), DP Cable(2M), LAN Cable(1.5M), RS232 Cable(4P-4P,1.5M), LC Cable(VLC,3M), Screw(M3xL5.5 Black,16EA / M3xL3.5 Silver, 20EA / M4xL22 Black, 22EA), Cover Shield Assy 1EA, Cable Rubber 1EA, Rubber Damper 4EA, Cable Holder 4EA, Signage Box Wing Bracket 2EA

Special Feature1

Conformal Coating (Power Board): Yes

Downloads

3 files from the manufacturer

PDF Manuals & guides MFL05753201_04_Q_250617.pdf 8.8 MB PDF Manuals & guides OM_ENG.pdf 2.8 MB PDF Manuals & guides · Opens on manufacturer site WebOS23_ENG_Rev.01.pdf 2.8 MB

Questions about 55EW5Q-C

What is the LG 55EW5Q-C used for?

The LG 55EW5Q-C is a 55-inch transparent OLED signage display. It shows text, images and video over whatever sits behind the glass, so it suits shop windows, lobbies and atria where people need to see the space and the message together. It is built for signage content such as advertising, wayfinding and welcome messages, and it can play scheduled content stored on the panel itself.

How transparent is the screen in practice?

LG rates the panel at 43% transparency (SET), based on its own 2022 internal measurement using a hazemeter. How clearly objects behind the glass appear depends on the lighting on both sides and the content on screen. Ask SmartRooms Qatar for a site survey and compare the view under the actual room lighting before committing to several units.

Can I place it in a shop window facing the sun in Doha?

The operating range is 0 to 40 °C with 10 to 80% humidity, and Qatar summers regularly exceed 45 °C. Install it inside an air-conditioned space, set back from direct sun and glare, rather than outdoors or against sun-heated glass. A site survey will show whether your intended position keeps the panel within that range.

Is it suitable for a hotel lobby in West Bay?

A West Bay hotel lobby is a typical setting for this model. The 55-inch panel can sit in front of a lounge, reception or atrium and show arrival information, dining offers or destination content while guests still see the room behind it. Confirm the lobby temperature and the position of any glazing during the site survey.

How bright is it compared with a standard indoor screen?

The data gives 200 nit at APL 100% and 600 nit at APL 25%, both measured without glass. Full-screen white is therefore dimmer than small bright areas, so content with large light backgrounds will look less bright. Compare these figures with the ambient light at your site, and ask the SmartRooms Qatar team to advise on the best content design.

What power does the panel need and how much does it draw?

The power input is AC 100-240V at 50/60Hz with built-in power. Typical consumption is 70W and maximum is 230W, equal to 239 BTU/hr typical and 785 BTU/hr maximum. The 240 V supply used in Qatar falls within this input range. Confirm the plug fitting for your site before ordering, and use the BTU figures when sizing cooling for the room.

How do I connect a media player or laptop to it?

The panel has one HDMI input and one DisplayPort input, plus a DisplayPort output for daisy-chaining to a second panel. Control is possible through RS232C, LAN and IR inputs, and an external IR receiver is included. Two USB 2.0 Type A ports support USB plug and play. A 2 m DisplayPort cable and a 1.5 m LAN cable are supplied.

Can it play content without a PC running all the time?

Yes. The data lists local contents scheduling and USB plug and play, so the panel can run stored content on its own. It has 16GB of internal eMMC storage and runs webOS 7.5. For centrally managed content across several screens, the software list includes SuperSign CMS, SuperSign Cloud, Mobile CMS and Connected Care.

How do I manage several panels across different sites?

The data lists group manager, control manager, SNMP, Wake on LAN, status mailing, fail over, RS232C sync and local network sync. These features help an IT or facilities team monitor and schedule screens in several rooms, such as the entrances and corridors of a school or the reception areas of a multi-floor office in Lusail. SuperSign Control+ also appears in the compatibility list.

What is in the box, and how heavy is it to mount?

The head weighs 11.6 kg and the signage box 2.6 kg, with a packed weight of 21.9 kg. The box includes a remote with two batteries, a power cord, an IR receiver, MCX harness cables, LAN and RS232 cables, a DP cable, an LC cable, two wing brackets, cable holders, rubber dampers and screws. Plan for at least two people and a site survey before fixing a 1225.5 mm wide panel to a wall.

Does the on-screen menu support Arabic?

Yes. The on-screen display languages include Arabic alongside English, French, German, Spanish and many others. This suits offices and schools in Qatar that work in Arabic and English side by side. Choose the menu language during setup, and confirm with the SmartRooms Qatar team that your signage content and labels use the languages you need.

How do ministries, schools or companies order this panel?

SmartRooms Qatar supplies the 55EW5Q-C by quotation, usually issued within one working day. We accept purchase orders (LPOs), government tenders including Monaqasat, and payment by bank transfer, cheque or purchase order. Send the number of units and the mounting locations so the quotation reflects the site survey and installation needed.