Selection Advice for LCD Screens in Outdoor Instruments and Equipment
Selection Advice for LCD Screens in Outdoor Instruments and Equipment
For outdoor instruments and equipment, it is recommended to prioritize high-brightness TFT LCD screens, paired with anti-glare, optical bonding, wide-temperature, and protective structures. High brightness improves readability under sunlight; optical bonding reduces internal reflections and fogging; wide-temperature design helps cope with temperature differences between day and night. Typically, 800–1,500 cd/m² can be used as an initial selection range; specific values are for reference only and should be combined with installation angle, glass transmittance, and actual environmental testing.
How to Evaluate Key Parameters
1. Brightness and Visibility
"Nits" refer to cd/m², used to indicate screen brightness. In outdoor direct sunlight conditions, it is recommended to focus on high-brightness backlighting, automatic dimming, and anti-glare surfaces, rather than just comparing resolution. Optical bonding reduces reflections from the air gap, making text and curves easier to distinguish.
2. Environmental Tolerance
- Wide Temperature Range: Select the operating temperature grade based on the equipment's location, and verify low-temperature startup and high-temperature stability.
- Dust and Water Resistance: The enclosure can refer to IP65. According to IEC 60529, IP65 means dust-tight and protected against water jets, but it does not imply prolonged immersion in water.
- UV Resistance: Refer to the artificial weathering test method in ISO 4892-3 to evaluate the weatherability of panels, adhesives, and coatings.
Jinpeng Selection Recommendations
For outdoor instruments and industrial control terminals, it is recommended to prioritize the combination of "high-brightness TFT + optical bonding + anti-glare + wide temperature + IP protection," and require suppliers to provide test reports on brightness, temperature cycling, UV aging, and waterproofing. Jinpeng can further match display solutions based on equipment size, interface, and batch requirements. The above standard information is sourced from IEC 60529, ISO 4892-3; the brightness range is for engineering evaluation reference only.