NEC NL6448BC20-21D | Industrial-Grade 6.5" VGA Display for Demanding Environments
Key Parameter Overview
For engineers requiring immediate, at-a-glance technical data, the NL6448BC20-21D from NEC presents a robust profile designed for long-term industrial deployment. It balances proven technology with performance characteristics essential for modern human-machine interfaces (HMIs) and instrumentation.
| Parameter | Specification |
|---|---|
| Manufacturer | NEC |
| Model | NL6448BC20-21D |
| Screen Size | 6.5 inch (16.5 cm) |
| Resolution | 640 x 480 (VGA) |
| Technology | a-Si TFT LCD, Transmissive |
| Luminance | 700 cd/m² (Typical) |
| Viewing Angle | Horizontal: 160°, Vertical: 140° |
| Interface | LVDS (1 port, 6/8-bit) |
| Operating Temperature | -20°C to +70°C |
| Backlight | White LED, Replaceable |
For a comprehensive engineering review, you can download the official NL6448BC20-21D datasheet.
Product Highlights: Performance Meets Longevity
The NEC NL6448BC20-21D is not just a collection of specifications; it's an engineered solution for applications where visual clarity and operational endurance are non-negotiable. It delivers tangible value by focusing on the core requirements of industrial system designers.
- Exceptional Visual Clarity: A high luminance of 700 cd/m² combined with an anti-glare surface treatment ensures crisp, readable content even in the high ambient light conditions common on factory floors or in control rooms.
- Unwavering Operational Reliability: With an industrial-grade operating temperature range of -20°C to +70°C, this display performs consistently from cold-start conditions to high-heat environments adjacent to machinery.
- Flexible System Integration: The standard LVDS interface provides excellent noise immunity and simplifies cabling, while the reversible-scan function offers added flexibility in mechanical mounting and system layout.
- Designed for Longevity: Featuring a replaceable LED backlight unit, the NL6448BC20-21D is built for a long service life, reducing total cost of ownership by allowing for field maintenance rather than complete system replacement.
Technical Deep Dive: The Engineering Behind the Performance
Two core attributes set the NL6448BC20-21D apart: its visual performance under stress and its foundational ruggedness.
The high-brightness, 700-nit LED backlight is a critical feature. In an industrial setting, this isn't about vibrant colors for media consumption; it's about piercing through ambient light pollution to deliver critical data without error. This is a fundamental aspect of creating effective sunlight-readable HMIs. When paired with its wide viewing angles (160° H / 140° V), it ensures that operators can get a clear, consistent reading from various positions around the equipment, enhancing both safety and operational efficiency.
The display's durability is anchored by its wide temperature tolerance and the use of proven a-Si TFT (Amorphous Silicon) technology. This mature technology is renowned for its stability and reliability over years of continuous operation, making it a trusted choice for mission-critical systems where failure is not an option.
Application Scenarios & Value Proposition
The specific feature set of the NEC NL6448BC20-21D makes it an ideal fit for several key industrial sectors:
- Industrial Automation & HMI Panels: The combination of high brightness, wide viewing angles, and a robust temperature range ensures reliable operation on the factory floor, from CNC machine controls to process monitoring stations.
- Marine Electronics: Its durable construction and clear visibility are essential for bridge control systems and navigation equipment, where reliable performance against sun, spray, and temperature swings is paramount. Explore our insights on engineering marine LCDs for reliability.
- Medical and Test Instrumentation: For diagnostic equipment and portable test devices, the display provides the stable, high-contrast visuals necessary for accurate data interpretation, supported by the clean signal integrity of the LVDS interface.
Engineer's FAQ for the NL6448BC20-21D
Here are answers to common questions from design engineers considering this display.
Is the LED backlight truly field-replaceable?
Yes. The datasheet confirms the backlight unit is a separate, replaceable component (Part No. 121LHS31). This is a significant advantage for long-life industrial equipment. It allows maintenance teams to restore the display to its original brightness after years of service, dramatically extending the useful life of the entire HMI or instrument and maximizing return on investment.
Why is the LVDS interface a better choice than a parallel RGB (TTL) for my application?
LVDS offers superior noise immunity, which is critical in electrically noisy industrial environments where VFDs, motors, and relays are common. It also requires fewer conductors and allows for much longer cable runs between the display and the system controller without signal degradation. This simplifies the mechanical design and ensures a more robust and reliable system architecture. For more foundational knowledge, see our guide to TFT LCDs.
If you are designing a system that demands a reliable, clear, and long-lasting visual interface, the NEC NL6448BC20-21D is an engineered solution built to meet those challenges. For pricing and availability, please contact our technical team.
