What is sunlight readable display？
A sunlight-readable display refers to a display screen that remains clearly visible under strong direct sunlight. This is a key performance in the field of industrial and outdoor displays, and its core is not simply to increase brightness,
A sunlight-readable display refers to a display screen that remains clearly visible under strong direct sunlight. This is a key performance in the field of industrial and outdoor displays. Its core is not simply to increase brightness, but to solve the severe contrast ratio reduction caused by ambient light (especially sunlight) through a comprehensive technical solution.
Core technical principle
The fundamental reason for not being able to see the screen clearly in sunlight is that strong ambient light reflects off the screen surface, superimposing on the light emitted by the screen itself, diluting the image colors and dark details, and making the contrast ratio approach zero.
The sunlight-viewable display addresses this issue through the following combination of technologies:
Technical direction | Implementation method and purpose | Typical effect/indicator |
Ultra-high brightness output | Using high-power LED backlighting significantly enhances the screen's own luminance, effectively "overpowering" the ambient reflected light. | Outdoor full direct sunlight: ≥2000 cd/m² (nits) required In semi-outdoor/shaded conditions: ≥1000 cd/m² is required (Typical monitor: approximately 250-350 cd/m²) |
Efficient anti-reflective treatment | Applying multiple layers of anti-reflective coatings or etching matte treatment on the screen surface physically scatters and reduces ambient light reflection. | Reduce the surface reflectivity from >8% of ordinary glass to<2% or even lower. |
Optical bonding technology | The touch screen, glass cover plate, and liquid crystal panel are fully bonded without any air layer, eliminating internal reflective interfaces and enhancing light transmittance. | The touch screen, glass cover plate, and liquid crystal panel are bonded together without any air layer, eliminating internal reflective interfaces and enhancing light transmittance. |
Note: cd/m² or Nits (Nit) is an international unit for measuring brightness, with a higher value indicating a brighter screen. When selecting, be sure to confirm that it is the continuous operating brightness, not the peak brightness.
How to verify and choose
When making a choice, apart from the parameters, attention should also be paid to:
Key indicator verification: Clearly inquire about the continuous stable operating brightness (non-peak value) and surface reflectivity of the supplier's products. For outdoor use, a minimum of 1500-2000 nits is required.
Standards and Testing: Some products comply with standards such as ANSI/ISA 101.01. The most reliable verification method is field testing under the target lighting environment.
Comprehensive performance balance: Higher brightness brings higher power consumption, more heat generation, and higher cost. It is necessary to ensure that the display has a good heat dissipation design (such as metal casing, heat sink), and assess the power supply requirements.
Main application scenarios
This type of display screen is specifically designed for occasions where the ambient light is uncontrolled:
Outdoor equipment: charging stations, self-service ticket machines, information kiosks.
Transportation: In-vehicle information systems, marine navigators, aircraft cockpits.
Special vehicles: operation panels for construction machinery, agricultural machinery, and military vehicles.
Energy and Public Utilities: Monitoring terminals for outdoor substations, docks, and photovoltaic power stations.
In summary, the sunlight-readable display is a system solution that combines ultra-high brightness, anti-reflection, and optical optimization technologies. When selecting, it is essential to comprehensively consider your specific environmental light intensity, installation method, and budget.
If you could inform me of the specific environment you plan to use it in (for example, whether it will be installed in a completely open-air environment or a semi-open-air environment with shading inside a vehicle), I can provide you with more targeted brightness recommendations and considerations for model selection.
AUO LCD DISPLAY:https://www.idtdisplay.com/products/AUO_LCD_Displays/
