1. Core Parameters of 3.92inch AMOLED Display Module

The 3.92inch AMOLED display module is engineered for high-resolution, active matrix TFT displays with advanced features such as MIPI interface and touch capabilities. Below are its key specifications:

ParameterValueDescription
Display Size3.92 inch (Diagonal)Measured diagonally across the active area
Resolution1080(H) × 1240(V) pixelsHigh pixel density for sharp visuals
Active Area65.448 mm (W) × 75.144 mm (H)Physical dimensions of the display area
Module Outline67.25 mm (W) × 79.87 mm (H) × 0.8 mm (T)Compact form factor for embedded systems
Color Depth16.7M colorsTrue-to-life color reproduction
Interface TypesMIPI 4 LANEFlexible connectivity options
Operating Temperature-30°C ~ +85°CIndustrial-grade temperature range
Lifetime13 Months (Normal Operating Conditions)Based on 25°C white screen mode

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2. Applications of 3.92inch AMOLED Module

2.1 Smart Wearables

The 3.92inch AMOLED module's compact design and low power consumption make it ideal for smartwatches and health monitors. For example, a leading brand integrated this module into its smartwatch, achieving a 40% increase in screen brightness and 15% longer battery life.

2.2 Industrial Control Terminals

With its industrial-grade temperature range (-30°C to 85°C) and high ESD resistance, the module is widely used in PLCs and sensors. It passes 96-hour high-temperature, high-humidity tests and 10 thermal shock cycles (-30°C ↔ +85°C).

2.3 Consumer Electronics Accessories

From wireless earbuds to portable Bluetooth speakers, the module's MIPI interface ensures seamless integration with main control chips. A case study shows a 30% improvement in user interaction efficiency after adoption.

3. Technical Advantages

3.1 High Contrast and Wide Viewing Angles

With a contrast ratio of 60,000:1 and ±85° viewing angles, the module delivers consistent image quality from any perspective. This makes it suitable for outdoor applications where sunlight readability is critical.

3.2 Low Power Design

Standby mode consumes only 0.68mW, while high-brightness mode (HBM) uses 443.9mW. This low-power architecture is ideal for battery-operated IoT devices and wearables.

3.3 Color Accuracy

Covering 97% NTSC color gamut and supporting 16.7M colors, the module ensures vibrant and accurate color reproduction. The ΔE value is less than 2, meeting professional display standards.

4. Interface Design and Signal Definitions

The module supports the MIPI 4 LANE interface type, offering flexibility for various system designs. Below is the signal definition table:

Pin NumberSignal NameFunction Description
1GNDGround
2TSP_SDAData line for Touch Panel (I²C)
3TSP_SCLClock line for Touch Panel (I²C)
4TSP_RESETReset Pin for Touch Panel
5-38Various signalsRefer to detailed pin assignment for more information

Design Recommendations:

  • Ensure differential signal pairs have impedance matching and trace length difference ≤ 1mm.

  • Add decoupling capacitors near power pins to suppress high-frequency noise.

5. Optical Performance Specifications

The 3.92inch AMOLED module excels in optical performance, making it suitable for high-end applications. Below are the key optical metrics:

ParameterConditionMinTypMaxUnitNote
Luminance (Bp)White screen mode450500550cd/m²-
Contrast Ratio (CR)0° viewing angle60,000:1----
Color Gamut (NTSC)-97%100%-%-
Lifetime (LT95)25°C white screen200--hoursNormal mode

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6. Design Guidelines for System Integration

6.1 Mechanical Considerations

The module's thickness of 0.8mm requires careful PCB layout to avoid mechanical stress. Use a 0.2mm clearance around the module for thermal expansion.

6.2 Power Supply Recommendations

  • Use a 3.3V regulator with ±5% tolerance for VCI and IOVCC.

  • Decoupling capacitors (0.1μF ceramic) must be placed within 5mm of the power pins.

6.3 Thermal Management

In high-brightness modes, the module can reach 50°C. Ensure adequate airflow or use a heatsink if operating in enclosed environments.

8. Case Study: Integration into Smart Health Monitor

A medical device company integrated the 3.92inch AMOLED module into its wearable health monitor. Key results included:

  • 30% reduction in power consumption compared to previous LCD models

  • Improved user satisfaction due to vibrant color and wide viewing angles

  • Passing IP67 rating for water and dust resistance

Quote from Product Manager: "The AMOLED module's low power consumption and high brightness allowed us to double the battery life of our device while maintaining a sleek form factor."

9. Frequently Asked Questions

9.1 What is the maximum operating temperature?

The module can operate reliably up to 85°C, making it suitable for industrial environments.

9.2 Can it be used in outdoor applications?

Yes, with a peak brightness of 550 cd/m² and wide viewing angles, it maintains readability under direct sunlight.

9.3 What is the expected lifespan?

Under normal operating conditions (25°C white screen), the module has a lifespan of 13 months.

9.4 Is touch functionality supported?

Yes, it includes a built-in capacitive touch controller with I²C interface support.

10. Contact Information

Shenzhen Brownopto Technlogy Co., Ltd.

Phone/Whatsapp: +86 17748574559

mailbox: info@blhlcd.com