LESSON Smart Display LS0397I03-MP-V1 (Driver IC: ST7701SN) – 3.97" 480×800 TFT Module (COG+FPC+B/L)

Introduction
This document is the official product specification for the LS0397I03-MP-V1, a 3.97-inch transmissive a-Si TFT-LCD module developed by LESSON Smart Display Technology Co., Ltd. Featuring a WVGA resolution of 480(RGB)×800, 16.7 million colors, and an RGB interface, this module is designed for applications requiring a medium-sized color display with a classic, easy-to-drive parallel interface, such as industrial control panels, portable devices, and consumer electronics.

Key Specifications

• Brand & Model: LESSON LS0397I03-MP-V1
• Screen Size: 3.97 inches (diagonal)
• Display Technology: Transmissive a-Si TFT-LCD
• Module Type: COG+FPC+B/L
• Display Resolution: 480(RGB) × 800 pixels (WVGA)
• Display Colors: 16.7 Million Colors
• Main LCD Driver IC: ST7701SN
• Interface: RGB Interface (easily accessed)
• Operating Temperature: -20°C ~ 70°C
• Storage Temperature: -30°C ~ 80°C
• Backlight: LED, If=40mA, Vf=12-12.8V
• Power Supply: IOVCC (2.8V)
• Compliance: ROHS

General Description
The LS0397I03-MP-V1 is a compact display module. Its core features include:

1. Standard RGB Interface: Provides a parallel data bus, a classic and widely used interface in embedded systems that is easy to drive.
2. Detailed Pin Description: The specification provides a complete pin description, including RGB data lines, sync signals, touch panel interface (I2C), backlight control, and power.
3. Mechanical & Assembly Guidelines: Includes outline dimension drawings and provides important structural design recommendations, such as the recommended bezel opening should be 0.3mm smaller than the panel's viewing area (VA) on each side, and the foam gasket opening should be 0.6mm larger than the VA on each side, to ensure a good appearance and prevent squeezing.
4. Electrical & Reset Timing: Defines power supply voltages and critical reset timing parameters (e.g., reset pulse width TRW min 10µs, reset cancel time TRT max 5ms or 120ms), which are crucial for stable startup.

Key Features

• Classic RGB Interface: Good compatibility and simple to drive.
• Integrated Touch Panel Interface: Reserved I2C and interrupt pins for external touch panel connection.
• Detailed Structural Design Recommendations: Provides clear guidance for bezel design.
• Comprehensive Specification Coverage: Covers physical features, mechanical specifications, electrical characteristics, optical characteristics, and reliability requirements.

Application Scenarios

• Industrial Human-Machine Interfaces (HMI)
• Portable Medical or Test Equipment
• Smart Home Control Terminals
• Automotive Aftermarket Display Devices
• Various General-Purpose Embedded Display Applications

Conclusion
The LESSON LS0397I03-MP-V1 is a fully-featured, well-documented 3.97-inch display module, particularly suitable for projects that require a traditional RGB interface and pay attention to structural design details.