The high brightness and low brightness of industrial LCD screens are mainly reflected in the following aspects, which directly affect their application scenarios, performance, and cost:
1. Brightness value (unit: nits)
High brightness screen: usually refers to a brightness of 700-2500 nits or even higher, suitable for strong light environments (such as direct sunlight outdoors).
Low brightness screen: The brightness is generally between 200~500 nits, suitable for indoor or low light environments.
2. Application scenarios
High brightness screen:
Outdoor scenes: such as outdoor advertising machines, traffic signs, car displays, ship equipment, etc.
Strong light environment: Factory workshops, construction sites, oil fields, and other areas with direct sunlight or high light pollution.
Special requirement: It is necessary to counteract the reflection of ambient light to ensure clear and visible images.
Low brightness screen:
Indoor scenes: such as control rooms, medical equipment, laboratory instruments, office terminals, etc.
Low light environment: night operation, cinema equipment, low light industrial environment.
Human eye comfort requirement: Avoid high brightness causing visual fatigue to operators.
3. Power consumption and heat dissipation
High brightness screen:
High power consumption, requiring higher power backlight modules (such as multiple LED beads).
The heat generation is greater, usually requiring additional design of heat dissipation structures (such as metal heat sinks, fans).
Low brightness screen:
Low power consumption, suitable for devices that rely on battery power or have high energy efficiency requirements.
Low heat generation, simpler heat dissipation design.
4. Display effect
High brightness screen:
High contrast and visibility can be maintained under strong light, reducing reflective interference.
In low light environments, excessive brightness may cause glare, and it is necessary to support brightness adjustment function.
Low brightness screen:
Display softly in dark environments, suitable for long-term viewing.
Under strong light, the image may become blurry due to reflection or insufficient brightness.
5. Technical implementation
High brightness screen:
Adopting high brightness backlight modules (such as high-power LEDs and optimized light guide plates).
Full lamination process may be used to reduce screen reflection (such as optical adhesive bonding).
Partial support for wide temperature operation (-30 ℃~80 ℃), suitable for outdoor extreme environments.
Low brightness screen:
The backlight module design is simpler and lower in cost.
Anti reflective coating or full bonding process may be omitted.
6. Lifespan and Cost
High brightness screen:
Long term high load operation may accelerate the aging of backlight LEDs, resulting in a relatively short lifespan.
High cost (complex technology, higher material requirements).
Low brightness screen:
The backlight load is low and the lifespan is usually longer.
Low cost, suitable for projects with limited budgets.
