JicTech 3.9-Inch TFT LCD Module
Overview
The JicTech RT039T9T-A1 is a 3.9-inch TFT LCD module with a resolution of 480×128 pixels. Utilizing a-Si TFT technology and a normally white transmissive display mode, it supports 16.7 million colors via dithering. The module features a 24-bit RGB interface (HV mode), high brightness, wide viewing angles, and a slim mechanical design, making it suitable for space-constrained and harsh-environment applications.
Key Features
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3.9-inch diagonal, 480×128 resolution (wide horizontal format)
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High brightness: 500 cd/m² typical
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Wide viewing angle: 70° (left/right/down), 50° (up)
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Slim design: 105.5 × 40.64 × 2.95 mm
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24-bit RGB interface (supports HV & DE mode)
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High contrast ratio: 500:1 typical
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Long-life LED backlight: 25,000 hours
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Operating temperature: -20°C to +70°C
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RoHS compliant, reliable for industrial use
Technical Specifications
Interface & Pin Description
The module uses a 40-pin FPC connector. Key pins include:
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VBL+, VBL-: Backlight anode and cathode
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VCC: Logic supply (3.3V)
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R0–R7, G0–G7, B0–B7: 24-bit RGB data
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CLK: Pixel clock
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HSYNC, VSYNC: Horizontal and vertical sync signals
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DEN: Data enable (internal weak pull-down)
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DISP: Display on/off control
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XR, YD, XL, YU: Reserved for touch panel (NC in this version)
Power Sequence & Timing
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Power-On: VDD → PVDD → AVDD → Signals → Backlight
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Power-Off: Backlight → Signals → AVDD → PVDD → VDD
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Clock Frequency: 24 MHz to 30 MHz (27 MHz typical)
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Frame Rate: ~17.28 kHz in 24-bit RGB mode
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Detailed timing parameters are provided in Section 6 of the specification.
Applications
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Industrial control panels and HMIs
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Portable medical and diagnostic devices
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Handheld terminals and scanners
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Instrumentation and measurement displays
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Automotive auxiliary displays
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Narrow-format information displays
Reliability Testing
The module is subjected to comprehensive environmental and reliability tests, including:
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High/low temperature operation and storage
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Thermal shock cycling (-30°C to +80°C)
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Vibration and mechanical shock resistance
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ESD protection (±8kV air, ±4kV contact)
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Package drop testing (80 cm height)
Mechanical Drawing & Dimensions
Refer to the mechanical drawing in the specification for detailed dimensions, mounting holes, and connector placement. Key highlights:
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Module outline: 105.5 mm (W) × 40.64 mm (H) × 2.95 mm (D)
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Bezel opening: 98.04 mm × 28.34 mm
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Active area: 95.04 mm × 25.34 mm
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FPC connector positioned for easy integration
Packaging Information
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Standard packing supports 80 pieces per carton
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Custom packaging options available for volume orders
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Anti-static and moisture-protective materials used
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Packing method ensures safe transport and handling
Handling & Precautions
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Avoid mechanical shock and direct pressure on the display surface.
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Use ESD protection during handling and assembly.
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Clean only with isopropyl alcohol or ethyl alcohol; avoid water, ketones, and aromatic solvents.
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Store in a dry, dark environment (0°C to 40°C, ≤80% RH).
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Follow recommended power sequence to prevent damage.
Why Choose This Module?
The JicTech RT039T9T-A1 combines a unique wide-format display with high brightness, robust construction, and long-term reliability. Its slim profile and industrial-grade performance make it an ideal choice for applications requiring a compact yet durable display solution. Whether for industrial controls, portable devices, or specialty instruments, this module delivers consistent performance and excellent visual clarity.
Ready to Integrate?
Contact us for samples, pricing, and technical support. Let’s bring your narrow-format display project to life with JicTech quality and reliability.
Download Technical Documents
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