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LESSON Smart Display LSC055I18-MP-V1 (Driver IC: ST7703I-G5-DP) – 5.5" 720×1440 Dual-Mode (Transflective) TFT Module

Tags & Keywords
#TFT-LCD #5.5inch #720x1440 #HD+ #16.7MColors #Transflective #MIPI #ST7703I #LESSON #RoHS

Introduction
This document is the official product specification for the LSC055I18-MP-V1, a 5.5-inch Transflective TFT-LCD module developed by LESSON Smart Display Technology Co., Ltd. Featuring an HD+ resolution of 720×1440, 16.7 million colors, a MIPI interface, and unique dual-mode (Reflective/Transmissive) operation, this module is specifically designed for applications that must operate under a wide range of ambient lighting conditions, from bright sunlight to darkness, such as outdoor handheld devices, rugged industrial equipment, and automotive displays.

Key Specifications

  • Brand & Model: LESSON LSC055I18-MP-V1
  • Screen Size: 5.5 inches (diagonal)
  • Display Technology: Transflective TFT-LCD (PANDA type)
  • Module Type: COG+FPC+B/L
  • Display Resolution: 720(H) × 1440(V) pixels (HD+)
  • Display Colors: 16.7 Million Colors
  • Main LCD Driver IC: ST7703I-G5-DP
  • Interface: MIPI DSI (4 Lanes)
  • Module Size (W×H×D): 70.7 × 141.8 × 3.02 mm (Typical)
  • Active Area (W×H): 120.96 × 60.48 mm
  • Operating Temperature: -20°C ~ 70°C
  • Storage Temperature: -30°C ~ 80°C
  • Backlight: 14 Chip-White LEDs, If=40mA, Vf=22.4V (Typ.)
  • Power Consumption: 0.146W (Reflective Mode), 0.986W (Transmissive Mode)
  • Luminance: 8.5%*Ambient (Reflective), 80+8.5%*Ambient (Transmissive)
  • Compliance: ROHS 2.0

General Description
The LSC055I18-MP-V1 is a highly specialized display module. Its core features include:

  1. Transflective Technology: Can operate in Reflective Mode (using ambient light, backlight OFF) for optimal visibility in bright sunlight (>1500 cd/m²), and Transmissive Mode (with backlight ON) for use in low-light conditions. This dramatically extends battery life in outdoor applications.
  2. Wide Temperature Range: Supports operation from -20°C to 70°C, suitable for harsh environments.
  3. High-Resolution MIPI Interface: 4-lane MIPI DSI supports high data rates for the HD+ resolution.
  4. Detailed Mechanical & Optical Specs: The specification provides precise module dimensions, active area, pixel pitch, and formulas for calculating luminance based on ambient light.

Key Features

  • Sunlight Readable: Excellent performance in bright ambient light with low power.
  • Dual-Mode Operation: Adaptive display mode based on environment.
  • Rugged Design: Wide operating temperature range.
  • High-Resolution MIPI Interface: Modern, high-speed connection.

Application Scenarios

  • Outdoor Handheld Terminals (PDA, Rugged Phones)
  • Automotive Instrument Clusters or Infotainment
  • Industrial Field Equipment
  • Marine and Aviation Displays
  • Solar-Powered or Battery-Critical Devices

Conclusion
The LESSON LSC055I18-MP-V1 is a premium, environment-adaptive 5.5-inch display module. Its transflective technology and dual-mode operation make it an indispensable solution for products that demand high visibility under all lighting conditions while prioritizing power efficiency.

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Eddie Chen
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