Optical bonding 3.5 inch 320*480 IPS TFT LCD Module

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Specifications

General Specifications：

Application – E-Bike Display System Integration

In a recent E-bike dashboard project, the customer required a compact display module that could maintain stable visibility under varying outdoor lighting conditions while simplifying system assembly.

Traditional air-bonded displays showed noticeable reflection under daylight, and the multi-layer structure increased alignment complexity during installation.

FANNAL provided a 3.5" TFT display module with integrated optical bonding, reducing internal reflections and improving contrast. The bonded structure also eliminated the air gap between layers, helping prevent fogging and enhancing durability in outdoor environments.

To support the customer’s control system, the module was designed with an MCU + RGB interface, allowing straightforward integration with the mainboard without additional signal conversion.

As a result, the customer achieved:

• Improved readability in real riding conditions

• Reduced assembly steps and alignment issues

• More stable long-term performance in outdoor use

This solution is suitable for E-bike dashboards and similar outdoor control interfaces, where both visibility and system integration efficiency are critical.

Custom E-Bike Display Module Solutions

Display & Panel Selection

FANNAL supports flexible TFT LCD customization based on project requirements, including:

• Size range: 1.77" – 15.6"

• Panel partners: BOE, Innolux, Tianma, JDI, Hannstar, CTC, TCL

• Panel technologies: IPS / TN / LTPS

• Operating temperature options:

  • Industrial: –20°C ~ +70°C

  • Automotive: –30°C ~ +85°C

This allows customers to scale from prototype to mass production with stable panel supply.

Interface & FPC Design

To ensure seamless integration with different E-bike control systems, FANNAL provides:

• Custom FPC shape, length, and pin definition

• Interface support: SPI / MCU / RGB / MIPI / LVDS / eDP

• Signal conversion for different host platforms

• EMI shielding and circuit optimization for stable signal transmission

Backlight & Brightness Optimization

Brightness and power consumption can be adjusted based on application needs:

• Standard to high brightness options

• Maximum brightness up to 3000 cd/m²

• Backlight lifetime up to 50,000 hours

• Structure options: metal / plastic / hybrid

Suitable for both energy-efficient and high-visibility outdoor designs.

Touch Panel Integration (Optional)

FANNAL can upgrade the module into a full touch display solution:

• Structure options: G+G / G+F+F

• Multi-touch, glove touch, waterproof touch support

• Passive pen and gesture support

• Controller options: Microchip, EETI, ILITEK, FocalTech, GOODiX

• In-house firmware tuning for sensitivity and anti-interference

Cover Lens Customization

The cover glass can be tailored to match industrial and E-bike design requirements:

• Material: Glass (0.55–10mm), PMMA, PC

• CNC processing, 2.5D / 3D shaping, hot bending

• Surface treatments: AG / AR / AF

• Optional features: anti-microbial, anti-explosion

Optical Bonding Solutions

FANNAL provides multiple bonding processes based on size and application:

Driver Board & System Integration

For faster deployment, FANNAL also supports:

• Driver board interfaces: RGB / HDMI / LVDS / VGA / DVI / Type-C

• Compatibility with custom TFT modules

• Optimized signal design for stable image transmission

• Support for full display system integration

FAQ – 3.5" E-Bike TFT Display Module

1. Can this module be adapted to different mainboards or system architectures?

Yes. FANNAL supports interface adaptation and signal optimization based on the customer’s mainboard design. This includes FPC customization, pin definition adjustment, and compatibility verification to ensure stable communication with various embedded systems.

2. How does optical bonding impact long-term reliability in outdoor use?

Optical bonding eliminates the air gap between layers, which helps prevent internal condensation, dust ingress, and delamination over time. This is particularly important for E-bike and outdoor devices exposed to humidity and temperature fluctuations.

3. What engineering support is provided during product integration?

FANNAL provides support throughout the development process, including design evaluation, prototype validation, and integration guidance, helping reduce risks during system integration and mass production.

4. Can the mechanical structure be customized to fit specific enclosure designs?

Yes. The module can be adjusted in terms of outline dimensions, mounting structure, and cover lens design to match different housing requirements, ensuring better mechanical integration and assembly efficiency.