admin Posted on 2:24 am

How does an LCD TV work?

In recent years, televisions and electronic devices have become smaller and more energy efficient. This trend has a lot to do with the LCD (liquid crystal display) technology that powers the images on the screens of televisions and other electronic equipment. Not long ago, a 32-inch TV could weigh several tens of kilograms and be very thick, taking up a lot of space. Now the same 32-inch LCD TV weighs a mere fraction of its previous counterpart and can be less than an inch thick. LCD screens are everywhere in the modern world, such as in an LCD TV, DVD player, GPS systems, mobile phones, media players, and almost any other electronic device that has a display screen. But how do LCDs really work?

At the heart of LCD technology are liquid crystals. Although the term suggests that the crystals are in liquid form, it is a bit of a misnomer. Instead, liquid crystals are actually groups of solid crystals that display the properties of liquids when grouped together in large numbers. Sand is a similar substance. Each grain of sand is solid, but when a large amount of sand is placed in a bucket, it can flow and pour out like water. These liquid crystals also have the ability to polarize light. Polarization is the ability of a substance to filter light. When exposed to an electrical current or radiation source, the liquid crystals inside an LCD screen filter various amounts of light to produce the different hues and images on the television screen.

In an LCD TV, liquid crystals are sandwiched between two sheets of material that can conduct electricity. There are various forms of liquid crystals available, but most LCD TVs use twisted nematic crystals, which are liquid crystals that have a twisted-shaped structure. These crystals and their twist, which affects the amount of light that filters through, is controlled by an electromagnetic current that is applied to one of the plates that hold the liquid crystal. This plate has very small grooves that can influence the orientation of the crystals and thus how and when they polarize light. On the other side of the crystals is another surface that has polarizing filters oriented at 90 degrees to the surface with the slots. When the light passes from the backlight through the layer with the grid, it will pass through the liquid crystal layer and will be twisted by various degrees. Depending on the amount of twisting that takes place, the amount of bias will change.

Every LCD screen will have millions of tiny holes that light can shine through, called pixels. Also, each pixel is divided into three smaller pixels called subpixels, which are colored red, green, and blue, respectively. When light is allowed to pass through each pixel, different pixels will light up. Light from red, green, and blue pixels mix with each other at different intensities to create the illusion of millions of colors.

Leave a Reply

Your email address will not be published. Required fields are marked *