Making a TFT Sunlight Readable

sunlight readable display in gas pump

The way we use technology has changed dramatically with modern screens, from laptops to cell phones. Nevertheless, ordinary displays are frequently inadequate when used outside or in brightly illuminated areas. A number of creative solutions, such as transflective technology, high brightness, and Blanview, are available to resolve the issue of making a TFT (Thin-Film Transistor) display sunlight readable. We’ll examine these technologies and how they overcome the problems with visibility caused by direct sunshine in this post.

Historically, sunlight has been a problem for conventional TFT displays. The high amounts of ambient light in direct sunshine can overwhelm the brightness and contrast of the display, rendering the data on it nearly impossible to read. This problem affects a number of applications, including nautical navigation, automobile displays, and outdoor kiosks. However, with Focus LCDs’ emphasis on providing displays for safety critical environments, there are many ways to make your display readable in sunlight readable environments.

Increasing Brightness

Increasing the display’s brightness is one of the easiest ways to make it sunlight readable. High luminosity TFT screens provide light that is noticeably brighter than that of conventional displays. They are considerably more apparent in direct sunshine when they frequently reach brightness levels of 1000 nits or higher.

LED backlighting systems made especially for outdoor and high-ambient-light settings are frequently installed on these screens. Visibility can be further improved by dynamically adjusting them to match shifting lighting conditions. When it comes to outdoor digital signage, high-brightness displays are frequently utilized because they have to contend with the sun’s intensity.

But there are drawbacks to this strategy. Elevating the brightness of a display can have a substantial effect on power consumption, which could restrict its application in battery-powered gadgets. Furthermore, in some situations, especially in the presence of glare and reflections, high brightness by itself might not be the best option for visibility.

Change polarization

The most common polarizer for a TFT is a transmissive polarizer, which requires backlighting for the TFT display to be readable.  Selecting a TFT with a transflective polarizer is a novel approach that seeks to integrate readability in direct sunlight with energy efficiency. These screens are designed to make better use of ambient light, including sunlight.

Transflective displays offer a combined transmissive and reflective polarization. They function similarly to conventional backlit displays in transmissive mode, offering good visibility in dimly lit areas and the reflective nature of the display makes use of surrounding light to improve visibility.  This can make them quite suitable for outdoor use.

While the benefits noted may make a transflective TFT seem like a no brainer, there are disadvantages that come along with the double polarization.  Firstly, the contrast of a transflective TFT is typically lower than that of a transmissive TFT. This makes use of the transflective display in normal brightness and low light environments less optimal than a transmissive TFT. Additionally, a reduction in the color gamut and chromacity are common with a transflective TFT.  This results in the color saturation in the transflective display having poorer color saturation. Additionally, the image can look grayscale when used in high-ambient-light conditions.

Alternative Display Types

One noteworthy invention that solves some of the drawbacks of high-brightness screens is Blanview technology. In essence, Blanview is a sophisticated form of LCD (Liquid Crystal Display) technology with the capability of improving outdoor visibility.

Blanview displays’ primary characteristic is their capacity to reduce glare and decrease reflection. This design uses a variety of optical improvements, including circular polarizers and anti-reflection coatings, to accomplish this. This allows the display to keep the same readability in all different lighting conditions.

Blanview screens’ power efficiency is one of its main advantages. They are more appropriate for battery-operated gadgets and applications where power conservation is crucial because they use less power than high-brightness displays. Blanview’s common usages include handheld medical devices, mining equipment and mobile applications where power consumption is a concern and readability is critical in all types of environments.


For many different purposes, it is imperative that TFT displays be able to read in direct sunshine. To tackle this issue, transflective displays, Blanview technology, and high-brightness displays all have special benefits. Elevated brightness offers a simple solution with more luminance. Blanview technology is excellent at glare reduction and power efficiency enhancement. Conversely, transflective displays provide a special middle ground by maintaining power efficiency while making use of ambient light.

To find the optimal solution, always consider the particular application’s needs, including power consumption limitations and ambient light exposure level. We may anticipate even more creative ways to make TFT screens extremely adaptable in a variety of settings and sunlight viewable as technology develops. These developments will keep pushing the incorporation of displays in high-ambient-light and outdoor applications, improving our interactions with technology in every facet of our lives. Focus LCDs has LCD engineers that can help determine the optimal display solution for your application.