28″ Monochrome E-Paper Display Outdoor Digital Signage
The PromptControl 28″ Industrial Monochrome E-Paper Display is a commercial-grade, ultra-low-power turnkey hardware solution engineered for rugged outdoor DOOH (Digital Out-of-Home) ecosystems. Utilizing a bi-stable, ambient-reflective e-ink panel, it guarantees flicker-free, daylight-readable legibility with an ultra-wide $170^\circ$ viewing angle. Housed in a heavy-duty metallic chassis supporting wide-temperature operability, this off-grid-ready signage enables seamless wireless network integration, offering an eco-friendly, low-TCO solution for smart transit and urban infrastructure deployment.
Speification
28
| Screen | 28” E-Ink Monochrome Panel |
| Resolution | 3840*1080 |
| E-INK Technology | Carta |
| CPU | Quad-core Cortex-A55 processor |
| OS | Android 11 |
| Storage | 2G LPDDR4, 16G EMMC |
| Network | 2.4G/5G Wi-Fi，Bluetooth4.0，4G LTE(Optional) |
| Battery & Range | External high-capacity battery pack |
| Dimesions | 709*218*38 mm |
| Weight | ≤8Kg |
| Colour | Cyan, Magenta, Yellow, White |
| Certification | CE, FCC,CCC,ISO9001 |
Application Scenarios
-
Smart Transit & Infrastructure: Subway platform timetables, airport terminal flight info displays, outdoor bus shelter messaging
-
Commercial Retail & Hospitality: Large-format restaurant digital menu boards, retail storefront promotional displays.
-
Public Wayfinding & Digital Signage: Public park maps, community outdoor notice boards, open-air event guidance.
PromptControl Tech & Customization
Tech: Bi-Stable Technology & No Backlight;Anti-Glare & Eye-Friendly Optical Treatment
Customization: Custom open-source API/SDK, customized aluminum or plastic housing (IP65 optional), custom logo printing, flexible mounting brackets (glass/wall mount)
What is the E Ink Display?
E Ink (ePaper) is a bistable display technology that mimics traditional paper. Utilizing microcapsules with charged pigments that shift under electric fields, it retains static images with zero power consumption, only drawing energy during screen refreshes.
E Ink vs. Conventional Displays
Unlike standard LCD/OLED panels that emit direct backlights and blue light, E Ink utilizes ambient light reflection. This eliminates glare, guarantees perfect readability under direct sunlight, and eliminates eye strain during prolonged commercial or industrial operation.
Custom E Ink Solutions by PromptControl
As an integrated manufacturer and trader, PromptControl delivers complete, ruggedized E Ink touch display solutions. Backed by our own factory and strong R&D, we support extensive OEM/ODM customization—including custom touch panels (PCAP/Resistive), tailored interface boards, front bezels, and specialized optical bonding—ensuring seamless integration into your commercial kiosks, medical devices, or industrial automation systems.
| Feature | E-Ink Display | Normal Display (LCD/OLED) |
| Power Use | Near-zero when static | Constant power draw |
| Refresh Rate | Low (100–500ms) | High (1–240Hz) |
| Visibility | Sunlight-readable, no glare | Glare-prone, backlight-dependent |
| Color | Monochrome, color variants | Full color |
| Light Emission | Reflects ambient light | Emits backlight |
| Eye Strain | Minimal (paper-like) | High (blue light emission) |
Benefits of PromptControl E-Paper Displays
1. Premium Readability & Eye Comfort
Glare-free, paper-like viewing for indoor and outdoor environments. Crystal clear under direct sunlight, effectively reducing eye strain for long-term use.
2. Ultra-Low Power & Cost Savings
Cuts energy consumption by up to 90% compared to traditional LCDs. Power is drawn only during screen updates, extending battery life and reducing maintenance costs.
3. Full-Color & Advanced Driving Tech
Features innovative E Ink Spectra 6 full-color tech, flexible Full/Partial/Fast Refresh modes, and upgraded TCON board enhancements for vibrant, efficient visuals.
4. Custom Hardware for Multi-Scenarios
From smart signage and transit bus stops to digital photo frames, PromptControl delivers scalable dimensions and rugged enclosures to meet diverse industrial needs.
5. Seamless Integration & CMS Compatibility
Supports factory-direct hardware integration, wireless or solar-powered deployment, and remote CMS control for easy and low-maintenance operation.
