4.05-Inch E-Paper Display Module - a-Si TFT Display
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4.05-Inch E-Paper Display Module – a-Si TFT Display

Display Type: a-Si TFT Active Matrix E-Paper Display
Colors: Black / White / Red / Yellow
Surface Treatment: Anti-Glare, Hardness 3H

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Description

RJY Display proudly presents a 4.0-inch E-Paper Display designed for ultra-low power applications that require exceptional sunlight readability and wide viewing angles. Featuring a four-color display capability and anti-glare surface, this module is ideal for applications such as smart labels, retail price tags, industrial instruments, IoT devices, and e-shelf signage.

Item Specification Unit Note
Display Size 4.0 inch Approximate diagonal
Outline Dimension 80 (H) × 80 (V) × 0.9 (T) mm Compact square design
Active Area 75.504 (H) × 69.888 (V) mm
Pixel Resolution 832 × 768 pixels High-density pixel matrix
Pixel Pitch 90.75 × 91 μm
Pixel Arrangement Vertical stripe —
Color Display Black / White / Red / Yellow — 4-color e-paper
Surface Treatment Anti-Glare, Hardness 3H — Durable and glare-resistant
Driver Element a-Si TFT — Active matrix
COG Driver OTP layout (BOE compatible) —
EPD Waveform Provided and downloadable via BOE tools —

Key Features

  • Display Size: 4.05 inches (diagonal)

  • Resolution: 832 × 768 pixels

  • Pixel Pitch: 90.75 × 91 μm

  • Active Area: 75.504 × 69.888 mm

  • Outline Dimension: 80 × 80 × 0.9 mm

  • Display Colors: Black / White / Red / Yellow

  • Surface Treatment: Anti-Glare, 3H Hardness

  • Pixel Arrangement: Vertical stripe

  • Driver Element: a-Si TFT Active Matrix

  • COG Driver IC: OTP layout, compatible with BOE interface

  • EPD Waveform: Supplied and downloadable via BOE platform

Product Advantages

  • ✅ Ultra-Low Power Consumption: Ideal for battery-powered applications that require long standby times.

  • ✅ Four-Color Display: Supports multi-color static content for enhanced user engagement and information categorization.

  • ✅ Wide Viewing Angle & Paper-Like Readability: Perfect for use under direct sunlight, with minimal eye strain.

  • ✅ Durable Surface: 3H anti-glare coating resists scratches and reflections.

  • ✅ Slim Profile: Only 0.9 mm thick, making it suitable for compact embedded devices.

Applications

  • Smart Labels & ESL (Electronic Shelf Labels)

  • Industrial Control Panels

  • E-Price Tags and Signage

  • Smart Home Interfaces

  • Healthcare Devices and Wearable Equipment

Why Choose This E-Paper Display?

With its square shape and high pixel density, the 4.05-inch e-paper module offers superior legibility and form factor flexibility. The support for red and yellow accents makes it especially useful for highlighting alerts, pricing changes, or visual cues in critical environments.

Need a datasheet, integration guide, or customization support?
Contact our team to explore how this module can fit into your next innovative project.

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