4.39inch AMOLED Display Module: A Comprehensive Technical Overview

The 4.39inch AMOLED Display Module (Product No: BR439102-A1 V.1) from Shenzhen Brownopto Technlogy Co., LTD is a high-performance display solution designed for a wide range of applications. This article explores its technical specifications, interface capabilities, environmental resilience, and diverse use cases, supported by detailed data from the official specification document.

Technical Specifications and Performance

The 4.39-inch AMOLED display module integrates advanced LTPS technology, offering a resolution of 568(W) × 1210(H) pixels with a pixel pitch of 83.4(W) × 83.4(H) µm. The module supports 16.7 million colors and features a hard-coated surface for enhanced durability. Key optical characteristics include:

• Luminance: 550–600 cd/m² in normal mode.

• Contrast Ratio: 100000:1 at 25°C.

• Response Time: 2ms for both turn-on (TON) and turn-off (TOFF).

• Viewing Angles: Up to 80° in all directions (θT, θB, θL, θR).

Active Area and Mechanical Design

The module has an active area of 47.3712(W) × 100.914(H) mm and a module outline of 49.13(W) × 103.55(H) × 0.75(D) mm. Its ultra-thin design (0.75mm thickness) makes it ideal for space-constrained devices and embedded systems.

Power and Driver ICs

The module uses the SD5207 driver IC and CST3530 capacitive touch controller, ensuring efficient power management and precise touch input. Power supply requirements include:

• VDDIO: 1.65–1.98V (logic power).

• VCI: 2.65–3.6V (analog power).

• AVDD: 7.6V (positive power input).

• ELVDD: 4.6V (positive output voltage).

• ELVSS: -3.5V (negative output voltage).

Interface Configuration and Electrical Characteristics

This module supports the MIPI 2LANE interface for high-speed data transmission, along with an I2C interface for touch control and peripheral management. Key electrical parameters include:

Power Consumption

• Normal Mode:

• IELVDD: 200mA

• IVCI: 2.1mA

• Iavdd: TBD

• Standby Mode:

• IVCI: 38µA

• IVDDIO: 168µA

MIPI Interface Timing

The MIPI interface supports HS Data Transmission Burst and HS Clock Transmission, with precise timing parameters for data integrity and synchronization. The Bus Turnaround (BAT) protocol ensures seamless communication between the MCU and the display module.

Environmental and Reliability Testing

The module undergoes rigorous testing to ensure reliability under extreme conditions:

High and Low-Temperature Testing

• High Temperature Operation: +70°C for 240 hours.

• Low Temperature Storage: -40°C for 240 hours.

• Humid Heat Conditions: 60°C, 90% RH for 240 hours.

Thermal Shock and ESD Resistance

• Thermal Shock: -40°C (30 min) ↔ +80°C (30 min), 30 cycles.

• ESD Tolerance: Air discharge ±8kV, contact discharge ±4kV (IEC 61000-4-2).

Application Scenarios and Market Potential

The 4.39-inch AMOLED module is ideal for a wide range of applications due to its high resolution, low power consumption, and durability:

Smartphones and Tablets

The module's high resolution (568×1210) and vibrant color reproduction (16.7M colors) make it a perfect fit for mobile devices. Its low power consumption extends battery life, while the MIPI interface ensures compatibility with modern SoCs.

Industrial Human-Machine Interfaces (HMI)

In industrial automation, the module's wide temperature range (-40°C to +80°C) and humidity tolerance ensure reliable operation in harsh environments. Its capacitive touchscreen controller (CST3530) enables intuitive user interactions for control panels and monitoring systems.

Wearable Devices

With a compact form factor and energy-efficient design, the module is well-suited for smartwatches and fitness trackers. Its high brightness (up to 600 cd/m²) ensures visibility in outdoor settings, while the hard-coated surface resists scratches during daily use.

Automotive Displays

The module meets automotive-grade thermal and vibration requirements. Its wide viewing angles (80°) and fast response time (2ms) provide clear visibility and smooth animations for dashboards and infotainment systems.

Virtual Reality (VR) and Augmented Reality (AR)

With a 2ms response time and 16.7M color depth, the module delivers immersive experiences in VR/AR headsets. Its MIPI interface supports real-time rendering for interactive applications.

Quality Control and Inspection Standards

Shenzhen Brownopto adheres to strict quality standards, including:

Defect Classification

• Major Defects: Functional failures (e.g., no display, line defects) are not allowed.

• Minor Defects: Acceptable within limits (e.g., 4 dark dots ≥10mm in active area).

Sampling Procedures

Inspection follows GB/T2828.1-2012 standards with a normal inspection level II. Acceptable Quality Levels (AQL) are set at 0.65 for major defects and 1.0 for minor defects.

Mechanical and Optical Inspection

Modules are tested under 23°C ±3°C and 55% RH ±10% conditions. Visual inspection is conducted at 800–1200 lux ambient light and 30cm viewing distance to ensure uniformity and defect-free performance.

The 4.39inch AMOLED display module from Shenzhen Brownopto combines cutting-edge AMOLED technology with robust design, making it a versatile solution for consumer electronics, industrial equipment, and emerging technologies like AR/VR. Its adherence to international standards and rigorous testing ensures long-term reliability in demanding environments.