3.9 Inch 6-Color E-Paper Display 540×800 SPI EPD Module
3.9 Inch 6-Color E-Paper Display
Compact reflective E-Paper solution for low-power embedded applications
This 3.9 inch 6-color E-Paper display module is designed for compact embedded products that require low power consumption, paper-like readability, and stable image retention. With a resolution of 540 × 800 pixels and SPI interface support, it is suitable for smart display systems that need clear static content and efficient energy use.
Using pure reflective and bi-stable display technology, the module supports black, white, yellow, red, blue, and green presentation without continuous power draw for image holding. It is well suited for smart labels, framed displays, identification devices, and other low-power IoT or industrial applications.
Quick Highlights
- 3.9 inch 6-color E-Paper display module
- 540 × 800 reflective high-resolution display
- Supports both 4-wire SPI and 3-wire SPI
- Ultra-low power consumption for battery designs
- Bi-stable display for static content retention
- Suitable for smart labels, framed displays, and IoT products
Key Features
6-Color Display
Supports black, white, yellow, red, blue, and green for richer visual presentation in compact display applications.
Ultra-Low Power
Designed for low-energy products with stable image retention and minimized power use between display updates.
Reflective Viewing
Pure reflective display mode offers paper-like readability under ambient light without the need for a backlight.
Flexible SPI Interface
Supports both 4-wire SPI and 3-wire SPI to simplify MCU communication and embedded product integration.
Integrated Control Design
Includes on-chip RAM and integrated control functions for compact low-power embedded system development.
Wide Viewing Angle
Provides stable visual performance from different viewing directions in signage, ID, and information display use.
Product Overview
This 3.9 inch 6-color electrophoretic display module is developed for low-power embedded products, smart labels, framed information displays, and compact custom devices. Its 540 × 800 resolution provides clear presentation for text, icons, labels, and static graphical information in applications where low refresh frequency and long standby time are important.
Because E-Paper technology is bi-stable, the displayed image remains visible without the continuous power consumption required by conventional LCD or OLED screens. This makes the module a practical option for devices that need to show stable information over long periods while reducing battery load.
Its compact size, reflective readability, and multi-color display capability make it suitable for retail, office, logistics, industrial control, ID products, and other OEM or ODM embedded display applications.
Typical Applications
Mechanical Specifications
| Display Type | 6-Color Active Matrix Electrophoretic Display |
|---|---|
| Screen Size | 3.9 inch |
| Resolution | 540(H) × 800(V) |
| Active Area | 55.03(H) × 81.54(V) mm |
| Pixel Pitch | 101.9(H) × 101.925(V) μm |
| Pixel Configuration | Rectangle |
| Outline Dimension | 59.33(H) × 92.17(V) × 0.85(D) mm |
| Weight | TBD |
| Display Colors | Black, White, Yellow, Red, Blue, Green |
| Product Structure | Compact SPI EPD module |
Electrical Specifications
| Interface | 4-wire SPI / 3-wire SPI |
|---|---|
| Logic Supply Voltage | 2.8V to 3.6V |
| Typical Logic Supply | 3.0V |
| Interface Logic Supply | 1.8V to 3.3V |
| Typical Panel Power | 60 mW |
| Typical Operating Current | 20 to 200 mA |
| Sleep Mode Current | 50 μA |
| Deep Sleep Mode Current | 1 μA |
| Deep Sleep Power | 0.3 μW |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -25°C to 60°C |
| Indoor Illuminance | Up to 2000 lux |
| Controller Support | On-chip RAM and integrated control logic |
Optical Performance
| Color Capability | 6-color display |
|---|---|
| White Reflectance | Above 30% |
| Contrast Ratio | Above 8:1 |
| Viewing Angle | Ultra wide |
| Display Mode | Pure reflective |
| Display Characteristic | Bi-stable |
Interface & Integration
This 3.9 inch E-Paper module supports both 4-wire SPI and 3-wire SPI communication, making it suitable for embedded evaluation, MCU-side development, and product integration in compact low-power systems.
- 4-wire SPI: uses SCLK, SDIN, CSB, D/C, and RSTN.
- 3-wire SPI: D/C is not used, and 9-bit serial communication is supported.
- On-chip functions: includes integrated control logic, oscillator, SRAM, LUT, and VCOM-related functions.
- Embedded integration: suitable for smart labels, IoT panels, ID products, framed displays, and custom low-power display systems.
Power Consumption Advantage
This 6-color E-Paper display module is designed for applications where long standby time, low refresh frequency, and efficient power management are important. Thanks to its bi-stable display characteristic, content remains visible without the continuous power draw required by conventional display technologies.
With low power consumption and reflective readability, this module is suitable for battery-powered devices, portable terminals, reusable display products, smart identification systems, and low-maintenance embedded applications.
Reliability Test
- High temperature operation: +40°C, RH 30%, 168 hrs
- Low temperature operation: 0°C, 168 hrs
- High temperature storage: +50°C, RH 35%, 168 hrs
- Low temperature storage: -25°C, 168 hrs
- High temperature / high humidity operation: +40°C, RH 90%, 168 hrs
- High temperature / high humidity storage: +50°C, RH 90%, 168 hrs
- Thermal shock: -25°C to +60°C, 100 cycles
- Package vibration and package drop impact tests
- Electrostatic effect test: machine model ±200V, 0Ω, 200pF
Handling & Storage
- Handle carefully to avoid dropping, bending, twisting, or cracking the panel.
- Do not apply pressure to the display surface.
- Do not connect or disconnect the interface while the panel is operating.
- Avoid harmful gases such as acid and alkali gases.
- Do not stack the EPD panels or modules.
- Store in the original packaging to avoid scratches and preserve performance.
- Use a soft, dry cloth without chemicals for cleaning.
- Avoid moisture penetration, condensation, frost, and dew on the panel surface.
- Avoid long exposure to high temperature, high humidity, sunlight, or fluorescent light.
- Recommended storage environment: 15°C to 35°C, 30%RH to 60%RH, without condensation.
FAQ
1. What is this 3.9 inch 6-color E-Paper display module used for?
2. What is the resolution of this E-Paper display?
3. What colors does this display support?
4. Is this display suitable for battery-powered products?
5. Does this E-Paper display require a backlight?
6. What interface does this module support?
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E-Paper Display Applications
1. Retail Shelf Labels & Smart Price Tags
E-paper displays are widely used in retail shelf labels and smart price tags for clear pricing, SKU information, and promotional updates. Their low power consumption and long display retention make them ideal for large-scale retail environments.
2. Warehouse Labels & Logistics Tags
E-paper displays are well suited for warehouse labels, logistics tags, storage location labels, and reusable identification systems. They clearly show barcodes, item codes, and shipping information while reducing paper replacement.
3. Medical & Healthcare Devices
In medical and healthcare applications, e-paper displays are used for patient labels, bedside information, portable medical devices, and medication identification. They provide clear static visibility with low power consumption.
4. Industrial Control & Instrument Displays
E-paper displays are suitable for industrial control panels, monitoring terminals, and embedded instrument interfaces. They can present status information, operating parameters, and equipment identification with excellent readability.
5. Smart Home & IoT Devices
E-paper displays are increasingly used in smart home and IoT devices such as thermostats, environmental monitors, and control panels. They support always-visible information display with low energy use and a clean modern appearance.
6. Office Signage & Meeting Room Displays
For office and commercial spaces, e-paper displays are ideal for meeting room signs, desk nameplates, door signage, and workspace identification. They offer flexible content updates and a professional presentation.
7. Public Information Displays
E-paper displays are suitable for public information systems such as timetable boards, queue displays, transport labels, and directional signage. Their high readability and low power demand support long-term information visibility.
8. Portable Handheld Devices
Portable handheld devices benefit from e-paper displays for low-power information presentation in terminals, field tools, compact readers, and mobile embedded systems. They help extend battery life while keeping essential data visible.
9. Smart Identification & Reusable Badges
E-paper displays are widely used in smart badges, electronic name tags, event passes, and staff identification systems. They allow reusable and flexible identity display for offices, events, schools, and industrial sites.
10. Custom Embedded Display Projects
E-paper displays are also ideal for OEM and ODM embedded projects requiring low power consumption, compact integration, and stable image retention. They can be adapted for a wide range of custom electronic products.
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