Content last revised on October 22, 2025.
AA104VB04: 10.4-inch VGA TFT-LCD for High-Reliability Industrial Applications
Product Overview & Key Specifications
Engineered for Clarity and Durability in Demanding Environments
Engineered for unwavering performance in demanding industrial environments, the Mitsubishi AA104VB04 is a 10.4-inch color TFT-LCD module that combines high brightness with a wide operational temperature range, ensuring guaranteed readability and long-term reliability. Its core specifications are tailored for challenging applications: 640x480 VGA | 700 cd/m² Brightness | -20°C to +70°C Operating Temperature. This display delivers exceptional optical performance and robust construction. It directly addresses the need for a human-machine interface (HMI) that remains clear and functional in environments with fluctuating temperatures and high ambient light. For industrial systems requiring a standard 4:3 aspect ratio display with proven endurance, the AA104VB04 offers a robust, high-performance solution.
Application Scenarios & Value
Delivering System-Level Benefits in Uncontrolled Environments
The AA104VB04 is optimized for applications where environmental conditions are a primary design constraint. Its combination of a 700 cd/m² high-luminance backlight and an anti-glare surface finish provides excellent screen clarity, a critical factor in reducing operator error on factory floors flooded with overhead lighting or in outdoor kiosks under sunlight. What is the primary benefit of its wide temperature range? It ensures operational integrity from freezing warehouses to hot manufacturing sites without requiring auxiliary heating or cooling systems, which simplifies the mechanical design of a NEMA enclosure and lowers the total cost of ownership.
A prime engineering scenario is the control panel for a mobile heavy-duty vehicle or a fixed outdoor charging station. In these applications, the display must power on and perform reliably in sub-zero temperatures and remain readable under direct sun. The AA104VB04's -20°C to +70°C operating range ensures immediate functionality and prevents damage, while its high brightness cuts through glare. For systems that require a higher SVGA resolution within a similar form factor, the related AA104VC06 presents an alternative specification for consideration.
Key Parameter Overview
Decoding the Specifications for Enhanced Thermal Reliability
The technical specifications of the AA104VB04 are carefully balanced to support its primary role in industrial settings. The parameters below highlight the features that contribute directly to its robust performance and straightforward system integration.
| Parameter | Specification & Significance |
|---|---|
| Display Size | 10.4 inches (26 cm) |
| Resolution | 640(RGB) x 480 [VGA] |
| Luminance | 700 cd/m² (Typical) - Ensures readability in high ambient light. |
| Contrast Ratio | 700:1 (Typical) - Provides sharp, clear images with distinct color separation. |
| Operating Temperature | -20°C to +70°C - Critical for deployment in unconditioned industrial or outdoor locations. |
| Storage Temperature | -20°C to +80°C |
| Signal Interface | LVDS (Low Voltage Differential Signaling), 1 channel, 6-bit |
| Backlight System | White LED with integrated LED driver circuit, simplifying power supply design. |
Frequently Asked Questions (FAQ)
Engineering Queries on the AA104VB04
How does the -20°C to +70°C operating temperature range benefit system design?
This wide temperature range allows the AA104VB04 to be deployed in environments without climate control, such as outdoor terminals, unheated warehouses, and on-vehicle systems. For design engineers, this eliminates the cost and complexity of integrating auxiliary heating or cooling components, leading to a more reliable, compact, and cost-effective final product.
What is the significance of the 700 cd/m² brightness for an industrial HMI?
A brightness of 700 cd/m² (nits) is significantly higher than that of typical consumer displays. This high luminance is essential for maintaining screen legibility in areas with intense ambient light, such as factory floors with powerful lighting or outdoor applications where sunlight can wash out standard displays. It ensures critical data is always readable, improving safety and operational efficiency.
Does the integrated LED driver simplify integration?
Yes, significantly. The built-in LED driver board means the display can be powered by a single, standard voltage input for the backlight, eliminating the need for an external constant-current driver. This reduces component count, simplifies the power delivery architecture, and can accelerate the design and validation process of the host system, such as an Industrial HMI or medical monitor.
Is the VGA resolution suitable for modern industrial control applications?
While higher resolutions are available, the 640x480 VGA format remains a widely used and highly effective standard for many industrial control systems connected to a Programmable Logic Controller (PLC). It provides sufficient detail for displaying key process variables, status indicators, and simple graphical interfaces with excellent performance and compatibility with a vast range of industrial PCs and single-board computers.
Application Vignette
Performance Under Pressure: HMI for Food and Beverage Processing
Consider the design of an HMI for a bottling plant's control station. This environment presents multiple challenges: frequent washdowns create high humidity, temperature can fluctuate from cool processing areas to hot sterilization zones, and stainless steel surfaces can create significant glare. The engineer's challenge is to select a display that not only survives these conditions but performs flawlessly to ensure production continuity.
The AA104VB04 is an ideal fit. Its -20°C to +70°C operating range handles the thermal swings without performance degradation. When integrated into a properly sealed NEMA 4X enclosure, the module's inherent robustness contributes to the system's overall resilience. The 700-nit brightness, paired with its anti-glare coating, ensures that critical process data is clearly visible to operators, even under the harsh, reflective lighting common in these facilities. The longevity of its LED backlight is also a key factor. Think of it in terms of maintenance overhead; a long-life backlight is like an industrial-grade lightbulb that you don't have to worry about changing for years, minimizing machine downtime and service calls—a critical consideration for calculating Total Cost of Ownership in a 24/7 production environment.
From a strategic standpoint, selecting a component like the AA104VB04 is an investment in system uptime and reliability. Its industrial-grade specifications are not just features but direct enablers of consistent performance in the challenging environments where standard displays would falter. For engineers building systems where failure is not an option, the AA104VB04 provides a proven foundation of visual clarity and operational endurance, aligning with long-term goals of reducing maintenance costs and maximizing productivity.
