What is sunlight readable display?
sunlight readable display refers to the tft display that can be used in outdoor environment, also can be called sunlight readable display. There are three solutions to achieve this effect: electronic paper, high-brightness display, and total reflection display.
4.1. improved visibility
4.2. better durability
5.1. reflective display
5.3. e-paper displays
7.1. brightness level
7.4. energy efficiency
what are sunlight readable display?
sunlight readable display are digital displays designed for use outdoors. Outdoor displays need to be sunlight readable, waterproof, durable and capable of stable operation in extreme temperatures. Sunlight readable displays use several technologies to ensure optimal viewing in bright sunlight. The most common method is to increase the brightness of the display. High-brightness displays are the best choice for sunlight-readable displays, featuring high color gamut, high brightness, high resolution, and high refresh rate.
Why are sunlight readable displays essential for bright environment?
Sunlight is one of the most significant challenges for tft displays. Direct sunlight can significantly reduce the visibility of the display, making it difficult to read the displayed information. This can frustrate viewers, resulting in a poor viewing experience. Sunlight-readable displays are designed to overcome this challenge, ensuring the display remains legible even in bright sunlight.
How do sunlight readable displays work?
Sunlight-readable displays use several techniques to ensure optimal viewing in bright sunlight. The most common method used is to increase the brightness of the display. Standard displays have a brightness level of 250 to 300 nits, which is sufficient for indoor use. However, for outdoor use, the brightness level needs to be much higher. Sunlight-readable displays have a brightness level of at least 1000 nits, which allows them to remain visible even in direct sunlight.
Another technique used is the use of anti-reflective coatings. Standard displays have a glossy finish, which can reflect sunlight, leading to glare and reduced visibility. Sunlight-readable displays have an anti-reflective coating that reduces the glare and ensures that the display remains visible even in bright sunlight.
In addition to increasing brightness and using anti-reflective coatings, sunlight-readable displays also use special filters that help to reduce the amount of ambient light that enters the display. This helps to improve contrast and readability, making it easier for the audience to read the information displayed.
What are the benefits of using sunlight readable displays?
The benefits of using sunlight-readable displays are many. Some of the benefits include:
The primary benefit of using sunlight-readable displays is improved visibility. With a brightness level of at least 1000 nits, these displays ensure that the information displayed remains legible even in direct sunlight. This improves the viewing experience and ensures that the audience can access the information displayed.
Sunlight-readable displays are designed to be durable and weather-resistant. This makes them ideal for outdoor use, where they are exposed to various weather conditions such as rain, snow, and extreme temperatures.
What are the different types of sunlight readable displays?
There are several types of sunlight readable displays on the market. Different principles can be used to display content normally in a high-brightness environment, including:
1.Reflective display and transflective display
The most widely used liquid crystal displays are transmissive liquid crystal displays, including semi-reflective and translative displays and total reflective displays. These two displays can reflect ambient light for display, thereby providing display effects.
reflective display and transflective is a type of LCD display that uses ambient light to improve visibility. These displays have a reflective layer behind the LCD that reflects ambient light for better visibility. They are ideal for outdoor use as they are very energy efficient and offer excellent visibility even in direct sunlight.
Although semi-reflective and translative displays can increase part of the brightness, they are limited, and the actual effect is not good. In addition, in order to ensure the reflectivity of the display, the resolution is low, and the color gamut is also very low.
2.High Brightness displays:
Standard monitors have a brightness level of 250 to 300 nits, which is good enough for indoor use. However, for outdoor use, the brightness level needs to be much higher. There are three types of screen brightness visible under sunlight: the first brightness is 500cd/㎡-800cd/㎡, the second brightness is 900cd/㎡-1200cd/㎡, and the third is above 1300cd/㎡. The brightness of the 500cd/㎡-800cd/㎡ display can be seen in the sample, but to achieve a better effect, a display with a brightness of 1000cd/㎡ and above is required.
When you use a high-brightness display that can be read in sunlight, you need to be aware of the high-power consumption of the display at maximum brightness. Although this is the power consumption of the backlight, it should be noted that the power consumption is likely to be 1W or even higher!
3. E-Paper displays
E-paper display is a display that uses electronic ink to display information. These displays consume low power and provide excellent visibility even in direct sunlight. They are great for outdoor use as they can be read in bright sunlight without any glare or reflections.
However, the refresh rate of e-paper is relatively slow. It takes 3 seconds to refresh a frame of black and white electronic paper, and nearly 20 seconds to refresh a frame of color electronic paper. Moreover, the service life of electronic paper will be greatly reduced under ultraviolet radiation.
other way to enhance brightness: Optical Bonding
Optical bonding is a process that involves laminating a display with a protective glass. This process helps to reduce reflection and improve contrast, leading to better visibility in bright sunlight. Optical bonding also makes the display more durable and resistant to weather conditions.
Another technique used is the use of anti-reflective coatings. Standard monitors have glossy surfaces that reflect sunlight, causing glare and reduced visibility. The sunlight-readable display features an anti-reflective coating to reduce glare and ensure visibility even in bright sunlight.
In addition to increasing brightness and using anti-reflective coatings, sunlight readable displays use special filters that help reduce the amount of ambient light entering the display. This helps improve contrast and readability, making it easier for viewers to read the displayed information.
How to choose the right sunlight-readable display?
Choosing the right sunlight-readable display depends on several factors such as the location, application, and budget. When choosing a sunlight-readable display, it is essential to consider the following factors:
The brightness level of the display is crucial for outdoor use. A brightness level of at least 1000 nits is recommended for optimal visibility in bright sunlight.
A display that is durable and weather-resistant is essential for outdoor use. Look for displays that are rated for outdoor use and have anti-vandalism features.
Sunlight-readable displays that use LED technology are energy-efficient and have a lower operating cost.
Sunlight-readable displays can be expensive. It is essential to consider the budget when choosing a display and look for options that offer the best value for money.
In conclusion, tft display has become an important part of the modern landscape. With increased sunlight exposure, a sunlight-readable display is critical for optimal functionality. Sunlight-readable displays use various techniques to improve readability in bright sunlight, such as increasing brightness levels, using anti-reflective coatings, and special filters. Benefits of using sunlight readable displays include improved visibility, better durability, reduced energy consumption, enhanced brand awareness and increased engagement. When selecting a sunlight-readable display, factors such as brightness levels, anti-reflective coatings, durability, energy efficiency, and budget must be considered. By choosing the right sunlight readable display, businesses and organizations can ensure their outdoor displays remain legible and provide a better viewing experience for their audience.