Lixin (Wan'an) Intelligent Display Technology Co., Ltd. (LESSON) presents its LS0139Ixx series of 1.39-inch TFT-LCD modules, featuring versatile configurations with different resolutions, interfaces, and driver ICs. These modules provide designers with multiple options to match specific application requirements while maintaining a compact 1.39-inch form factor with high-quality IPS viewing characteristics.
Technical Summary: 1.39-inch TFT-LCD Module Series
Core Model Overview
- LS0139I01-S-V1: 240×240 resolution, SPI interface, ST7789P3 driver
- LS0139I02-S-V1: 240×240 resolution, SPI interface, ST7789P3 driver
- LS0139I03-S-V1: 240×280 resolution, SPI interface, ST7789P3 driver
- LS0139I04-M-V1: 240×240 resolution, MCU interface, ST7789T3 driver
- LS0139I05-QS-V1: 240×240 resolution, QSPI interface, ST77916 driver
Common Specifications Across Series
- Display Size: 1.39-inch (diagonal)
- LCD Type: Transmissive type a-Si TFT-LCD
- Display Mode: Normally Black
- Viewing Direction: Free (IPS technology)
- Pixel Arrangement: RGB vertical stripe
- Display Colors: 262K colors
- Module Construction: TFT-LCD panel + driver circuit + backlight unit
- Backlight: White LED (configuration varies by model)
- Environmental Compliance: ROHS compliant
Detailed Model Specifications
1. LS0139I01-S-V1 (240×240 + SPI + ST7789P3)
- Resolution: 240(RGB)×240 pixels
- Interface: 4-line serial interface (SPI)
- Driver IC: ST7789P3
- Input Data: 4-line serial interface
- Active Area: 30.24mm diameter (Φ30.24mm)
- Module Outline: 34.31mm × 32.56mm × 1.57mm
- Pixel Pitch: 0.126mm × 0.126mm
- PPI: 201 pixels per inch
- Luminance: 400 cd/m²
- Contrast Ratio: 1200:1
- Color Gamut: 65%
- Operating Temperature: -20°C ~ 70°C
- Storage Temperature: -30°C ~ 80°C
- Key Features: Compact design with high brightness and contrast
2. LS0139I02-S-V1 (240×240 + SPI + ST7789P3)
- Resolution: 240(RGB)×240 pixels
- Interface: 4-line serial interface (SPI)
- Driver IC: ST7789P3
- Display Format: Graphic 240(RGB)×240 dot-matrix
- Active Area: 30.24mm × 30.24mm
- Module Outline: Specific dimensions per mechanical drawings
- Viewing Direction: Free (IPS)
- Drive: ST7789P3
- Backlight Configuration: White LED with defined driving conditions
- Application: Suitable for applications requiring standard square format
3. LS0139I03-S-V1 (240×280 + SPI + ST7789P3)
- Resolution: 240(RGB)×280 pixels
- Interface: 4-line serial interface (SPI)
- Driver IC: ST7789P3
- Display Format: Graphic 240(RGB)×280 dot-matrix
- Active Area: 30.24mm × 35.28mm (rectangular format)
- Module Outline: Dimensions optimized for rectangular display area
- Viewing Direction: Free (IPS)
- Drive: ST7789P3
- Special Feature: Extended vertical resolution for additional display content
- Target Applications: Devices requiring slightly taller display area
4. LS0139I04-M-V1 (240×240 + MCU + ST7789T3)
- Resolution: 240(RGB)×240 pixels
- Interface: MCU interface (8-bit/16-bit compatible)
- Driver IC: ST7789T3
- Input Data: MCU 8-bit/16-bit interface
- Active Area: 30.24mm × 30.24mm
- Module Outline: 34.31mm × 32.56mm × specific thickness
- Data Interface: MCU8-bit/16-bit/SPI4W/3W compatible
- Backlight: 4 White LEDs in parallel
- Operating Temperature: -20°C ~ 70°C
- Storage Temperature: -30°C ~ 80°C
- Advantage: Multiple interface compatibility in single module
5. LS0139I05-QS-V1 (240×240 + QSPI + ST77916)
- Resolution: 240(RGB)×240 pixels
- Interface: QSPI interface
- Driver IC: ST77916
- Display Format: Graphic 240(RGB)×240 dot-matrix
- Active Area: 30.24mm × 30.24mm
- Module Outline: Optimized for QSPI interface implementation
- Viewing Direction: Free (IPS)
- Drive: ST77916
- QSPI Advantage: Higher data transfer rate compared to standard SPI
- Target Use: Applications requiring faster display updates
Comparative Analysis
Resolution Options
- 240×240 (Square): Standard format for most applications, balanced aspect ratio
- 240×280 (Rectangular): Extended vertical resolution for specialized applications
Interface Selection Guide
- SPI Interface: Standard 4-line serial interface, low pin count, widely supported
- MCU Interface: 8-bit/16-bit parallel interface, higher bandwidth, direct microcontroller connection
- QSPI Interface: Quad SPI for faster data transfer, reduced update time
- Interface Compatibility: Some models support multiple interface modes
Driver IC Characteristics
- ST7789P3: Optimized for SPI interface, balanced performance
- ST7789T3: Enhanced features with MCU interface support
- ST77916: Advanced driver with QSPI capability, higher performance
Mechanical Specifications
- Active Area Variations: Square (30.24×30.24mm) vs Rectangular (30.24×35.28mm)
- Module Thickness: Ranges from 1.57mm to specific thickness per model
- Outline Dimensions: Tailored for different interface and backlight configurations
Optical Performance
- Luminance: Up to 400 cd/m² for good outdoor visibility
- Contrast Ratio: 1200:1 for clear image separation
- Color Gamut: 65% for vibrant color reproduction
- Viewing Angle: IPS technology provides wide viewing angles
Electrical Characteristics
- Operating Voltage: Typically 2.8V-3.3V range
- Backlight Current: Varies by LED configuration (20mA-80mA per LED)
- Power Consumption: Optimized for battery-powered applications
- Interface Voltage: Compatible with 3.3V logic levels
Application Advantages
Design Flexibility
- Multiple Resolution Choices: Select square or rectangular format based on content requirements
- Interface Variety: Choose from SPI, MCU, or QSPI based on system architecture
- Driver Options: Match driver features to performance requirements
- Mechanical Configurations: Different outline options for various housing designs
Performance Features
- High Pixel Density: ~201 PPI for sharp image quality
- IPS Technology: Consistent color and contrast at all viewing angles
- Fast Response: Suitable for dynamic content display
- High Brightness: Good visibility in various lighting conditions
Reliability and Quality
- Wide Temperature Range: -20°C to 70°C operation for demanding environments
- Industrial Grade: Suitable for commercial and industrial applications
- Comprehensive Testing: Defined quality assurance procedures
- Longevity: Designed for extended operational life
Target Applications
- Wearable Technology: Smart watches, fitness trackers, health monitors
- Portable Instruments: Handheld test equipment, measurement devices
- Consumer Electronics: Smart home controls, portable gaming devices
- Industrial HMI: Control panels, status displays, operator interfaces
- Medical Devices: Portable medical monitors, diagnostic equipment
- IoT Devices: Connected sensor displays, smart device interfaces
Selection Considerations
- Content Requirements: Choose resolution based on display content needs
- System Architecture: Match interface to host controller capabilities
- Update Speed: Consider QSPI for faster display refresh requirements
- Power Budget: Evaluate power consumption based on backlight configuration
- Mechanical Constraints: Verify dimensions fit product housing
- Environmental Conditions: Ensure temperature range meets application needs
Integration Support
- Complete Documentation: Datasheets, interface specifications, mechanical drawings
- Reference Designs: Application circuits and connection examples
- Technical Support: Engineering assistance for integration challenges
- Sample Availability: Evaluation units for design verification
Market Perspective
"The 1.39-inch display series represents our commitment to providing designers with multiple options within a popular form factor," explained a LESSON product manager. "By offering different resolutions, interfaces, and drivers, we enable optimal matching of display characteristics to application requirements, whether it's a wearable device needing low power consumption or an industrial display requiring high brightness and reliability."
Availability and Ordering
All LS0139Ixx series models are available for sampling and volume production. Lead times and minimum order quantities vary by specific model and configuration.
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Meta Description: Discover LESSON's versatile 1.39-inch TFT-LCD series featuring 240×240 and 240×280 resolutions with SPI/MCU/QSPI interfaces and ST7789P3/ST7789T3/ST77916 drivers. Perfect for wearables, industrial HMI, and portable devices with IPS technology and 262K colors.
