LESSON Smart Display LSC0397I07-R-V1 (Driver IC: ST7701SN) – 3.97" 480×800 SPI/RGB TFT Module with Comprehensive Interface & Optical Specs

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Tags & Keywords
#TFT-LCD #SPI #RGBInterface #3.97inch #480x800 #16.7MColors #OpticalSpecs #InterfaceFlexibility #RoHS #LESSON #SmartDisplay

Introduction
This document is the official product specification for the LSC0397I07-R-V1, a 3.97-inch transmissive a-Si TFT-LCD module developed by LESSON Smart Display Technology Co., Ltd. Featuring a resolution of 480(RGB)×800, 16.7 million colors, and support for SPI, parallel RGB, and a hybrid 3-line serial interface, this module is one of the most versatile and thoroughly documented in its class. It is designed for applications requiring precise control and high image quality, such as industrial instrumentation, automotive clusters, consumer electronics, and prototyping systems, where developers need detailed timing and performance data.

Key Specifications

  • Brand & Model: LESSON Smart Display LSC0397I07-R-V1
  • Screen Size: 3.97 inches (diagonal)
  • Module Size: 59.4 (H) × 108.32 (V) × 3.675 (D) mm
  • Active Area: 51.84 (H) × 86.4 (V) mm
  • Driver IC: ST7701SN
  • Display Technology: Transmissive type a-Si TFT-LCD
  • Module Type: TFT-LCD Module
  • Display Resolution: 480(RGB) × 800 pixels
  • Display Colors: Up to 16.7 Million Colors
  • Interface: SPI (CS, SCL, SDA), Parallel RGB (18-bit: D0-D17), and 3-line Serial.
  • Absolute Maximum Ratings:
    • Supply Voltage (VCC, IOVCC): -0.3V to 3.6V
    • Operating Temperature (Topr): -20°C to +70°C
    • Storage Temperature (Tstg): -30°C to +80°C
  • Electrical Characteristics (Typical):
    • VCC: 2.8V (2.5~3.6V)
    • IOVCC: 1.8V (1.65~3.3V)
  • Pin Description (40-pin connector): Comprehensive pinout covering backlight, RGB data bus (18-bit), touch panel power/control, RGB control signals (DCLK, HS, VS, DE), and SPI pins.
  • Detailed Interface Timing:
    • 3-line Serial Interface: Full timing table with parameters like T_CSS, T_SCYW, T_SDS (setup/hold times for read/write).
    • RGB Interface: Full timing table with parameters like T_SYNC, T_ENS, T_CYCD (clock cycle), T_PDS (data setup).
  • Electro-Optical Characteristics (Typical @ IF=40mA):
    • Response Time (Tr+Tf): 35 ms
    • Contrast Ratio (CR): 800:1 (Typ.), 550:1 (Min.)
    • Transmittance: 3.93%
    • Viewing Angle (CR>10): 85° (All directions: θT, θB, θL, θR)
    • White Chromaticity: Wx=0.292, Wy=0.333
    • Luminance: 450 cd/m² (Typ.), 400 cd/m² (Min.)
  • Inspection Standards: References AQL (GB/T 2828-2003) and includes defect criteria for polarizer bubbles and black dots.
  • Environmental Compliance: RoHS Compliant

General Description
The LSC0397I07-R-V1 specification is a benchmark for completeness. It provides an unusually detailed set of interface timing parameters for both serial and parallel modes, enabling precise driver development. The electro-optical characteristics are fully quantified, including less common parameters like transmittance. The inclusion of inspection standards and defect criteria offers insight into quality control. This makes it an excellent reference for engineers who need to deeply understand display behavior or are selecting a display for high-quality applications.

Key Features

  • Triple Interface Support (SPI/RGB/3-line): Maximum flexibility for any host system.
  • Exhaustive Timing Specifications: For both serial and RGB interfaces.
  • Complete Electro-Optical Data: Includes transmittance and full viewing angle specs.
  • Defined Quality Inspection Standards: Provides confidence in consistency.
  • Mechanical Dimensions: Clear module and active area sizes.

Application Scenarios

  • Industrial Instrumentation: Where precise timing and display quality matter.
  • Automotive Clusters & Displays: For aftermarket or specialty vehicle systems.
  • High-Quality Consumer Electronics: Portable audio players, advanced remote controls.
  • Prototyping & Development Systems: Due to its interface flexibility.
  • Devices requiring rigorous display performance validation.

Conclusion
The LESSON Smart Display LSC0397I07-R-V1 is arguably the most thoroughly documented 3.97-inch module. It is the ideal choice for engineers and developers who require deep technical insight, interface options, and guaranteed optical performance for their projects.