How LED_LCD Technology Works


LCD stands for Liquid Crystal Display. It is essentially an electronic optical imaging technology that takes advantage of the modulating properties of liquid crystal light. Each pixel in an LCD monitor is subjected to a different electrical signal driven by two transparent electrodes. When light passes through the modified liquid crystal display, it displays a unique image based on the electronic signal delivered to it.

While it can produce images by changing the light passing through or touching it, it cannot produce light itself, which requires backlighting to see the images in detail. The most commonly used backlights are fluorescent lamps, although production of these types of LCD monitors is limited due to the toxicity of mercury, an important component of fluorescent lighting. The development of LCD backlighting today includes the use of customized LED display lighting, which makes displays much thinner, more energy efficient and poses no direct risk to the environment.

LCD displays and customized LED display have gone through a number of advancements over the years. Perhaps most notable was Hitachi’s introduction of in-plane switching (IPS) panel technology, which addressed the problems of low-quality color reproduction and very narrow viewing angles. Another example is thin film transistor technology (TFT), which solves the color and contrast problems of early color LCD displays.

Pros and Cons of LED- LCD Technology

For most of history, the mainstream consumer market has regarded flat screens as murals, just a popular science fiction product. However, as we enter the 21st century, technology has finally proven that “painted on the wall” screens are possible with the development of LCD or customized LED display technology.

Today, LCD technology is what defines the current HDTV market. In fact, it is the most widely used modern display technology, although there are other types of digital imaging technology. In this article, we will discuss the basics of this technology and briefly discuss the first knowledge you may need to know about this type of high definition television.

Advantages of LED & LCD

Most of the benefits of LCD HDTVs focus on overall performance rather than maximum screen performance. The elements offered throughout the package, both financially and technically, make it an attractive brand for some consumers, although they may be specific depending on certain elements:

It’s basically the cheapest type of HDTV you can find. As mentioned above, LCD monitors are the standard mainstream screen technology today. Even with a slightly more expensive LED-backlit LCD screen, you can save a lot of money, for example, by buying a power-hungry plasma screen.

It has a higher native resolution because it has more pixels per unit area. This is very useful if you want to maintain a clear quality of photos and videos during viewing.

It has very low power consumption. LCD screens, especially those with LED backlights, are generally considered to be the most environmentally friendly HDTVs in terms of energy costs.

Very lightweight compared to other traditional types of HDTVs. LCD technology does not require as much hardware and again the LED backlight is very useful. The only display technology that beats it in this category is the new customized LED display display technology.

Disadvantages of HD LCD TV

Of course, like any other technology, LCD HDTV also has some drawbacks, such as:

It is not very effective in producing black and gray colors. Yes they can, but other display technologies are much better than LCDs. This is because the backlight still loses some level of dark side illumination.

In comparison, it still has a limited viewing angle. LCD screens have improved dramatically over the years in terms of viewing angles. However, they are still relatively weak compared to other display technologies, which can still deliver sharp images with a viewing angle of nearly 90 degrees from the front.

Image quality is good but never great. This is another downside in comparison and this time it focuses on lower contrast than other display technologies.

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