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Views: 279 Author: Kaylee Publish Time: 2023-12-29 Origin: Site
One of the most widely used options for information visualization in a variety of applications nowadays is an LCD TFT display. The display's wide range of customization options, which let users select the ideal combination of important elements, contribute to its appeal.
However, what options are available to you when placing an order with a manufacturer for an LCD TFT display?
This article examines the essential characteristics of LCD displays that you ought to be aware of prior to presenting your application idea to a manufacturer, or even before using an LDC TFT display as a component in your application.
The abbreviation LCD stands for liquid-crystal display. The liquid crystals that underpin LCD screens' primary functioning are referred to by the term LCD. Exactly how do these crystals function? To orient the liquid crystal particles in the desired direction, we must manipulate the electric field in order to cause variations in light polarization.
And we also need to explain TFT if we're discussing LCD TFT displays. Thin-film transistors, or TFTs for short, are a kind of transistor made by depositing semiconductor thin films on top of a supporting substrate (in this example, glass, which is nonconductive).
Comparing this technology to passive-matrix technologies such as STN (Super-Twisted Nematic), a higher quality of projected content is possible. Because of the active-matrix's ability to sustain the liquid crystal state of matter between refreshing cycles, LCD TFT displays may alter their images quickly.
Brightness, often known as luminance, is a measurement of the screen's luminous intensity when an image is displayed in pure white. Brightness is typically expressed in candela per square meter, or cd/m2, the SI unit of measurement. But brightness is also available in nits (nt, 1nt = 1cd/m2).
A common display that you use on a daily basis has a brightness of 140–150 cd/m2. As long as there is adequate ambient lighting around you, this provides the best possible comfort for working. Brightness levels between 250 and 300 cd/m2 have the potential to strain eyes and reduce productivity.
It may surprise you to learn that some of the top cellphones available have brightness estimates as high as 700 cd/m2. This is required because, in dimly lit areas, brightness improves the legibility of content displayed on smartphone screens. This also applies to applications like PISs or displays found in retail centers and public transportation vehicles. These applications need a brightness of about 700 cd/m2.
What about the displays seen in outdoor equipment? Glass storefronts on the street, for instance? Applications in this scenario might even need 1000 cd/m2. Litemax is a well-known manufacturer of bright products.
Without a working knowledge of pixels, discussing display resolution is unfeasible. The smallest controllable component of an image that is seen on the screen is called a pixel. The colors red, green, and blue are carried by its three subpixels. They stand for the RGB color model together.
We can create the color tones of a pixel by appropriately adjusting the light that passes through subpixels. And it's simple to change each pixel's color on its own.
It is crucial for the highest-quality applications that users be unable to perceive pixels with their own eyes. There are too few pixels on the display if you can see them.
And resolve is all about this. It specifies how many pixels are visible on the screen. Typically, the resolution is given as a sum of both vertical and horizontal pixels. Consider the widely used resolution of 1280 x 720 pixels. This indicates that there are 720 vertical and 1280 horizontal pixels.
For retail applications, such as video walls or other storefront displays, high resolution is an essential feature. In public utility buildings such as government offices, high-resolution displays are also frequently used for information carriers.
The ratio of light intensity between the brightest and darkest places on the display is defined by the contrast setting. Clear and understandable text will be displayed on the display with great contrast and ideal brightness.
For example, we can achieve strong contrast by making the black hue deeper. The brightness of the panel won't change the contrast ratio in any way. Additionally, display makers have developed additional LCD TFT functions, such selective backlighting or local dimming, to boost contrast.
When using this parameter outside, it is very important. Keep in mind that displays in outdoor settings may be subjected to cold and extreme heat. The screens may not function properly if a device is placed in direct sunlight or in an environment where the surface may heat up to 100°C. This is because the LCD TFT's liquid crystals could boil.
Nonetheless, there are solutions available on the market that can make your application function if it is used in such circumstances. They employ the hiTni technology to keep the liquid crystals from boiling and they increase the operating temperature range.
The last thing to think about is how readable and accessible the content is when it is shown. This is especially true for information carriers utilized in digital signage applications and transportation applications. Select solutions that give these devices the widest viewing angles. This situation's best choices are 89°/89°/89°/89°.
Still, not every project will need for a display with those kind of high viewing specs. If your design calls for a screen to be placed below the line of sight (as in home appliances, for instance), you can utilize a matrix with a viewing angle of 12 o'clock. A matrix with a 6 o'clock viewing angle will also work if your application's users will be viewing the screen from below.
Selecting a viewing direction that is a little bit narrower is a great way to maximize your application's overall cost.
It is imperative that you take these factors into account when selecting a display for your application. You can examine these criteria and outfit your smartphone with a display that provides ideal readability within its surroundings by examining the requirements of your application.
Please contact us if you have any more inquiries concerning LCD TFT screens.
Kelai has supplied innumerable LCD TFT screens that have satisfied the most exacting specifications in even the most demanding settings. We also know how to choose select specifications to create a product that precisely meets your needs.
