Applications
Clear display in any extreme temperature, from sub-zero to scorching heat
Applications: Access Control Terminal
Products:
Background and Challenge
Access control terminals installed at building entrances are exposed to outdoor conditions at main entrances, service doors, semi-outdoor areas, etc. The display unit required specifications capable of withstanding these environments.
Reduced display responsiveness due to extreme temperature fluctuations
Liquid crystal response slows in sub-zero winter temperatures, while summer heat causes screen blackout (blackout). Operation becomes unstable depending on season and time of day.
Ensuring visibility in diverse outdoor light conditions
Accurate display readability was required from daytime to nighttime, demanding high contrast and a wide viewing angle.
Support for “Long-Term Maintenance”
Access control terminals are intended for long-term operation once deployed. Selecting devices with stable, future-proof procurement—not components with short supply cycles—is essential.
Reasons for Selection
“Wide Operating Temperature Range” Enabling Low-Temperature Operation Without Heaters
VFD maintains stable display performance without reduced response speed at -40℃ and up to 85℃. Reliable operation is possible without adding heaters or similar components.
Stable Contrast via Self-Emitting Characteristics
The structure where the characters themselves emit light ensures visibility even in environments with strong external light. Information is conveyed accurately at a glance, regardless of the user's position or viewing angle.
“Long-Term Stable Supply System” Suitable for Industrial Use
Avoids frequent specification changes common in consumer products, maintaining the same specifications for years. Eliminates design change risks during future maintenance and repairs, providing peace of mind throughout the product lifecycle.