E-Ink Digital Signage: The Low-Power Alternative to Traditional Digital Displays

Digital signage doesn’t always need a mains power supply, a bright backlight or a large LED or LCD screen. E-Ink digital signage, also known as e-paper signage, offers a very different approach to displaying information – using extremely little power while providing a clear, paper-like image that is easy to read, even in direct sunlight.

At Digital Media Systems, we supply E-Ink and e-paper digital signage solutions for applications where low power consumption, excellent daylight readability and remote content updates are particularly important.

What is E-Ink Digital Signage?

E-Ink, or electronic ink, is a display technology originally made popular by e-readers. Unlike conventional LCD and LED displays, an E-Ink display doesn’t need a backlight to produce its image. Instead, it reflects the available ambient light, creating a display that looks much more like printed paper.

This makes e-paper displays particularly interesting for digital signage applications where information needs to be visible outdoors but doesn’t necessarily need to change continuously.

One of the biggest advantages is that E-Ink uses virtually no power to maintain a displayed image. Power is primarily required when the content is changed. Once an image has been displayed, it can remain visible even when the power source is removed.

That makes E-Ink an extremely attractive technology for remote, battery-powered and solar-powered digital signage.

Why Choose E-Ink Digital Signage?

Extremely Low Power Consumption

Traditional LCD and LED digital signage displays require continuous power to keep the screen operating. E-Ink works differently. Because power is only required when the displayed content changes, E-Ink digital signs can operate for long periods from batteries, making them suitable for locations where installing a mains electricity supply would be difficult or expensive. This can also make E-Ink a highly efficient alternative to conventional digital displays where information only changes periodically.

Excellent Readability in Direct Sunlight

One of the major advantages of e-paper digital signage is its readability outdoors. Because E-Ink displays reflect ambient light rather than relying on a backlight, the display remains clear in bright daylight and direct sunlight. There is no conventional screen glare or reflective glass effect associated with many LCD displays. The brighter the surrounding environment, the more clearly the paper-like display can be seen. This makes sunlight-readable E-Ink displays particularly well suited to outdoor information signage, transport applications and public information systems.

Solar and Battery Powered

The extremely low power requirements of E-Ink make it possible to create solar-powered digital signage without the need for a permanent mains electricity connection. A solar panel can recharge a battery which provides power when the display needs to update. This opens up possibilities for installing digital signs in locations where running electrical cables would be impractical. For suitable applications, this can provide a genuinely wire-free digital signage solution.

Remote Updates Using 4G or 5G

E-Ink signs don’t have to be manually updated. Displays can be connected remotely using 4G or 5G, allowing information to be changed from a central system. This is particularly useful where an organisation operates a large number of signs spread across different locations. Instead of sending somebody to physically replace a printed poster or timetable, the content can be updated remotely.

E-Ink Digital Bus Stops

One of the most interesting applications for this technology is E-Ink digital bus stops. Digital Media Systems has supplied E-Ink digital bus stop displays in London, providing passengers with useful travel information such as bus arrival information, routes and timetables.

See our E-Ink Digital Bus Stops London case study

Bus stops are an excellent example of where E-Ink technology can provide advantages over conventional LCD digital signage. Large numbers of displays may be required, often in locations where supplying mains electricity would be expensive or impractical. A solar panel and rechargeable battery can provide the required power, while the display can be updated remotely.

Outdoor E-Ink Displays

E-Ink technology is particularly well suited to outdoor applications. Our outdoor e-paper signage solutions can be designed to withstand demanding conditions, with weather and vandal-resistant construction available for applications such as transport information and public signage.

Potential applications include:

• Bus stop information
• Timetables and schedules
• Passenger information
• Tourist information
• Wayfinding
• Public information
• Emergency and security notices
• Weather information
• Location-specific advertising
• Transport information
• Smart city applications

The display can be updated remotely and can show different information at different locations.

E-Ink Signs vs LCD and LED Digital Signage

E-Ink isn’t intended to replace LCD or LED digital signage in every situation. Instead, it provides another option where its particular characteristics offer an advantage. LCD and LED displays are excellent where you need bright, moving video, animation and frequently changing content. E-Ink is particularly attractive where information is relatively static, power availability is limited and readability in sunlight is important. For example, a retail advertising display may be better suited to an LCD or LED screen, whereas a remote bus timetable can be an ideal application for E-Ink. The choice therefore depends on the application, environment and how frequently the content needs to change.

A More Efficient Approach to Digital Signage

With increasing interest in energy efficiency and smarter infrastructure, low-power digital signage provides an interesting alternative to conventional always-on displays. E-Ink can combine the advantages of digital communication – remote updates, dynamic information and central management – with the extremely low energy requirements of an electronic paper display. For applications where information changes relatively slowly, this can offer significant practical advantages.

E-Ink Digital Signage from Digital Media Systems

Digital Media Systems supplies E-Ink and e-paper digital signage solutions throughout the UK, including systems designed for indoor and outdoor environments.

Our solutions can incorporate:

• E-Ink digital displays
• E-paper digital signage
• Solar power
• Rechargeable batteries
• 4G/5G communications
• Remote content updates
• Weather and vandal-resistant enclosures
• Bespoke mounting and installation solutions

We can help assess whether E-Ink is appropriate for your application and design a solution around the environment, power requirements and information that needs to be displayed.

Find out more about our E-Ink & E-Paper Digital Signage

If you’re considering E-Ink digital signage, e-paper displays, solar-powered digital signs or low-power outdoor signage, contact Digital Media Systems to discuss your requirements.