Content last revised on October 23, 2025.
NL3224AC35-10: 5.5" QVGA Industrial TFT-LCD for Long-Lifecycle HMI & Medical Systems
Introduction and Core Specifications
Engineered for Durability in Demanding Environments
The NL3224AC35-10 is a robust 5.5-inch a-Si TFT-LCD module designed for long-term reliability in demanding industrial and medical applications. It delivers proven performance where operational continuity and component serviceability are critical design requirements. With a specification built for resilience, this display provides a stable platform for essential equipment.
- Core Specifications: 320x240 QVGA | 400 cd/m² Brightness | -10°C to +70°C Operating Range
- Key Benefits: Excellent visual clarity, serviceable for extended TCO, and proven analog interface compatibility.
This module directly addresses the need for a durable display in systems with legacy analog video outputs, ensuring continuity for existing equipment without costly redesigns. For industrial HMIs requiring proven reliability and a direct analog RGB interface, the NL3224AC35-10 provides a mechanically robust display solution.
Key Parameter Overview
Decoding the Specs for Mechanical and Environmental Resilience
The technical specifications of the NL3224AC35-10 are tailored for integration into equipment that operates in challenging conditions. The parameters below highlight its suitability for applications where temperature fluctuation and long-term performance are primary engineering concerns.
| Optical Characteristics | |
| Screen Size | 5.5 inch |
| Resolution | 320(RGB)×240 [QVGA] |
| Luminance | 400 cd/m² (Typ.) |
| Contrast Ratio | 400:1 (Typ.) (TM) |
| Viewing Angle | 70/70/50/60 (Typ.)(CR≥10) |
| Display Mode | TN, Normally White, Transmissive |
| Electrical Interface & Backlight | |
| Signal Interface | Analog RGB + Composite Sync |
| Voltage Supply | 5.0V (Typ.) |
| Backlight | 1 pc CCFL, with inverter |
| Mechanical & Environmental Ratings | |
| Outline Dimensions | 144(W) × 86(H) × 14.7(D) mm |
| Active Area | 112.32(W) × 84.24(H) mm |
| Operating Temperature | -10 ~ 70 °C |
| Storage Temperature | -30 ~ 80 °C |
| Shock Resistance | 294 m/s² (30G) |
Download the NL3224AC35-10 datasheet for detailed specifications and performance curves.
Application Scenarios & Value
System-Level Benefits in Industrial and Medical Equipment
The NL3224AC35-10 is best suited for applications where longevity and backward compatibility are more valuable than the latest high-resolution specifications. Its design provides tangible value in specific engineering contexts.
A prime application is the maintenance and refurbishment of legacy Industrial HMI (Human-Machine Interface) panels on manufacturing floors. Many CNC machines, process controllers, and automation systems rely on analog video signals. The challenge for engineers is to replace a failing display without a complete control system overhaul. The NL3224AC35-10's native Analog RGB interface directly solves this problem, acting as a drop-in replacement that minimizes downtime and integration costs. Its wide operating temperature range ensures it can perform reliably in non-climate-controlled factory environments, a key differentiator from commercial-grade displays.
Similarly, in the field of portable test and measurement instruments and medical diagnostic equipment, this display's robust build and serviceable CCFL backlight provide a low total cost of ownership. The ability to replace the backlight extends the usable life of the entire instrument, a critical factor for capital equipment. While the NL3224AC35-10 is optimized for QVGA resolution systems, applications requiring a similar form factor with higher pixel density might be served by displays like the AA057QD01, which offers VGA resolution in a comparable 5.7-inch package.
Frequently Asked Questions
Clarifying Engineering Details
How does the -10°C to +70°C operating temperature range impact system design for an industrial HMI?
This wide range significantly simplifies thermal management design. It allows the HMI to be deployed in environments without active heating or cooling, such as outdoor kiosks, unheated warehouses, or factory floors near heat-generating machinery. This reduces system complexity, cost, and potential points of failure associated with fans or heaters, leading to a more robust final product.
What is the primary advantage of the analog RGB interface in today's digital-first market?
Its main advantage is guaranteed compatibility with a vast installed base of legacy industrial controllers, video generators, and single-board computers. For engineers tasked with system repair or incremental upgrades, it eliminates the need for costly and potentially unreliable digital-to-analog converters. This makes it a strategic choice for extending the life of existing, validated systems where a full digital redesign is not feasible or cost-effective, a topic further explored in our guide to industrial TFT-LCD applications.
Technical Deep Dive
A Closer Look at the Serviceable Design and Analog Interface
Two core features of the NL3224AC35-10 define its engineering value: the serviceable backlight system and the robust analog interface. Unlike many modern displays that integrate LED backlights into a sealed unit, this module utilizes a Cold Cathode Fluorescent Lamp (CCFL). The key benefit here is serviceability. The CCFL and its associated inverter are designed to be replaceable components, allowing technicians to restore original brightness to a panel after years of service. This approach drastically extends the operational life beyond the typical half-life of the backlight, directly improving the total cost of ownership and reducing e-waste.
The analog RGB interface offers a different kind of reliability. What is the primary benefit of its analog interface? It provides robust, straightforward video signal integration. The analog interface is like a universal audio jack; it's a proven, resilient standard from a major manufacturer like NEC that connects to a wide range of equipment without complex digital handshakes or driver dependencies. This simplicity ensures stable, predictable performance, which is essential for mission-critical display systems in industrial settings.
Application Vignette
Ensuring Uptime in Portable Test and Measurement Equipment
Consider the design of a portable vibration analyzer used by field technicians to diagnose issues in heavy machinery. The engineering challenge is to create a tool that is not only electronically precise but also physically resilient enough to survive the rigors of the field.
The display is a critical component. It must be readable in the variable lighting of a factory floor and withstand accidental bumps and wide temperature swings. The NL3224AC35-10 is a strong fit for this scenario. Its 400 cd/m² luminance provides the necessary brightness for clear data visualization. More importantly, its specified shock resistance and broad operating temperature range ensure the device remains functional whether used in a cold warehouse or near a hot engine block. The use of serviceable components means the device has a longer potential service life, protecting the initial investment. This focus on physical resilience and reliability directly contributes to the end user's primary goal: maximizing equipment uptime and diagnostic efficiency.
For engineers developing new systems or evaluating components for long-term deployments, the NL3224AC35-10 offers a proven solution focused on durability and compatibility. To discuss the specific requirements of your application, please review the official datasheet and contact our technical support team for further information.
