NEC NL3224AC35-13: A Robust and Serviceable Industrial QVGA Display
## NEC NL3224AC35-13 5.5″ QVGA Industrial TFT-LCD Module
The NL3224AC35-13 is an amorphous silicon TFT active matrix color LCD module engineered for long-term industrial applications. It delivers consistent performance across a wide operating temperature range, a critical requirement for equipment deployed in uncontrolled environments. Its most distinguishing engineering feature is the field-serviceable CCFL backlight, which allows for lamp replacement to extend the display’s operational lifetime, directly addressing total cost of ownership for industrial systems.
* **Core Specifications**: 5.5-inch Diagonal | 320×240 (QVGA) Resolution | -10°C to +70°C Operating Temperature.
* **Key Advantages**: Serviceable design with a replaceable backlight lamp enhances product longevity. The compact form factor is well-suited for portable and space-constrained human-machine interfaces (HMIs).
* This module is built to provide reliable visualization in environments where temperature fluctuations are a significant operational challenge.
Download Official Datasheet (PDF)
Technical Analysis for System Integration
The engineering value of the NL3224AC35-13 lies in its robust operational parameters specified for industrial use. The operating temperature range of -10°C to +70°C ensures functional stability in applications from cold-storage facilities to sun-exposed control panels. This broad range minimizes the need for external heating or cooling systems, simplifying thermal design and reducing potential points of failure. The module’s ability to withstand a storage temperature down to -30°C and up to +80°C further underscores its resilience in harsh shipping and non-operational conditions.
A critical, yet often overlooked, feature is the replaceable CCFL backlight lamp. Think of the backlight as the engine of the display’s brightness; over thousands of hours, its performance naturally degrades. In many displays, a failing backlight means replacing the entire module. For the NL3224AC35-13, the ability to service the lamp extends the asset’s useful life significantly, a key consideration for equipment with long deployment cycles like medical devices or process controllers. This approach aligns with a maintenance strategy focused on repair rather than replacement, an important factor in managing long-term operational budgets. Read more about proactive backlight lifespan management.
Optimized Application Scenarios
The specific features of this module make it a strong candidate for a focused set of applications:
* **Portable Test & Measurement Equipment**: The compact 5.5-inch size and robust temperature range are ideal for field instruments that must perform reliably outdoors or in various plant conditions.
* **Industrial Process Controllers**: Its proven reliability and serviceable backlight make it suitable for HMIs on manufacturing lines where uptime is critical.
* **Medical Monitoring Devices**: The stable performance and long operational life support the extended product lifecycles common in the medical field.
* **Data Acquisition Terminals**: The QVGA resolution is well-suited for displaying critical numerical data and simple graphical interfaces clearly and efficiently.
This module is best matched for systems requiring a durable, serviceable QVGA display for clear data visualization in thermally demanding industrial and field environments.
Key Specifications of the NL3224AC35-13
| General and Optical Characteristics (Ta = 25°C) | |
|---|---|
| Display Mode | Normally White |
| Screen Size | 5.5 inches (14 cm) diagonal |
| Resolution | 320(RGB) x 240 (QVGA) |
| Active Area | 110.4 (H) x 82.8 (V) mm |
| Pixel Pitch | 0.345 (H) x 0.345 (V) mm |
| Luminance | 350 cd/m² (typ.) |
| Contrast Ratio | 300:1 (typ.) |
| Backlight | 1 CCFL (Replaceable) |
| Surface Treatment | Anti-glare |
| Environmental Ratings | |
| Operating Temperature | -10°C to +70°C |
| Storage Temperature | -30°C to +80°C |
Engineer FAQ
**1. What is the specified operating temperature range for the NL3224AC35-13?**
The datasheet specifies an operating temperature range of -10°C to +70°C and a storage temperature range of -30°C to +80°C, making it suitable for a wide variety of industrial settings.
**2. How is the CCFL backlight driven and what are the considerations for its lifespan?**
The module contains a backlight driving circuit. The CCFL is driven by a high frequency and high voltage, which is generated by the inverter. For maximum lifespan, it is important to operate the backlight within the recommended supply voltage and current limits specified in the datasheet and to ensure proper thermal management. The lamp itself is designed to be replaceable.
**3. Does this display have an analog or digital interface?**
The NL3224AC35-13 utilizes a 4-bit digital RGB interface for video signals, along with additional logic signals for timing and control.
**4. What is the key difference between the NL3224AC35-13 and the NL3224AC35-01?**
According to the official datasheet, the primary difference is the screen surface. The NL3224AC35-13 features a smooth (glare) polarizer, while the NL3224AC35-01 has an anti-glare surface treatment.
This NEC display provides a durable and serviceable foundation for industrial HMIs. Its design prioritizes operational reliability and longevity over cutting-edge resolution, directly supporting the core requirements of long-lifecycle industrial and medical equipment.