3.7" HINK-E037A03-A1 E-Paper Display 4 Grayscale 24-Pin SPI

3.7-Inch E-Paper Display Module – HINK-E037A03-A1

Upgrade your DIY electronics project with the RaderBook HINK-E037A03-A1 3.7-inch e-paper display. This ultra-low-power electronic ink screen delivers crisp black-and-white visuals with up to 4 levels of grayscale, making it ideal for smart badges, IoT devices, digital price tags, weather stations, and custom embedded displays. With a near-zero standby power draw of just 0.09 mW, it's perfect for battery-powered applications where energy efficiency is critical.

The display connects via a 24-pin FPC connector and communicates over a standard SPI interface, ensuring straightforward integration with popular microcontrollers like Arduino, Raspberry Pi, and ESP32. Driven by the reliable UC8171 IC, this screen supports a full refresh in just 4 seconds and retains its image without any power — a hallmark of e-ink technology.

Made in Mainland China.

Key Features

• 📐 3.7-inch dot matrix e-paper panel
• 🖤 Black & white with up to 4-level grayscale
• 📊 Resolution: 416 × 240 pixels
• 🔌 Interface: SPI | Connector: 24-Pin FPC
• ⚡ Driver IC: UC8171
• 🔋 Standby power: 0.09 mW — exceptional battery life
• 🔄 Full refresh time: 4 seconds
• 🌡️ Operating temp: 0°C – 50°C | Storage: -25°C – 70°C
• 📏 Outline size: 92.99 × 53 × 1.18 mm
• 📏 Active area: 81.536 × 47.04 mm
• 🔘 Pixel pitch: 0.196 × 0.196 mm
• ⚡ Refresh power consumption: 26.4 mW

Full Specifications

Great Pairings for Your Project

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Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What microcontrollers are compatible with the HINK-E037A03-A1 e-paper display?

A: The HINK-E037A03-A1 uses a standard SPI interface, making it compatible with a wide range of microcontrollers and single-board computers, including Arduino, Raspberry Pi, ESP32, and STM32. You will need to implement or adapt a driver using the UC8171 IC specifications, which are available in the datasheet.

Q: Does the e-paper display retain its image when power is turned off?

A: Yes — one of the core advantages of e-paper (electronic ink) technology is that it retains a static image without any power draw. Only screen refreshes consume energy, which is why the standby power consumption is just 0.09 mW. This makes it ideal for battery-powered devices that display infrequently changing information.

Q: Is a PCB or driver board included with the HINK-E037A03-A1 display?

A: No, a PCB is not included with this listing. You will receive the bare 3.7-inch e-paper display module with a 24-pin FPC connector. A compatible breakout board or FPC adapter will be required to interface the display with your development platform.

Q: What does "4 grayscale" mean for this e-paper screen?

A: The HINK-E037A03-A1 supports up to 4 levels of grayscale, meaning each pixel can be rendered in one of four shades — from pure white to pure black, with two intermediate gray tones. This allows for more detailed and visually nuanced content compared to a standard 1-bit (pure black and white only) e-ink display.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.