An LCD screen (acronym for "liquid crystal" in English) is a thin screen, made up of a certain number of pixels that are placed in front of a light source. This type of screen uses small amounts of electrical energy and that is why LCD screens are used in battery-powered devices.
The first LCD screen was produced in the United States in 1972 by Peter T. Brody. In such a screen, each pixel is made up of a layer of molecules located between two electrodes and two polarization filters. Liquid crystal allows light to pass from one polarizer to the other.
The LCD is used mainly in desktop or portable computer monitors and of all kinds, in mobile devices such as cell phones or palm computers, GPS, and in many other screens or 'displays' of artifacts such as household appliances or small devices that require low consumption of energy.
Despite the wide use of LCD screens, there are certain drawbacks or limitations in this technology that oppose it to the advancement of plasma screens.
These may include resolution problems with certain types of images, response time delays that create "ghost images" on the screen, limited viewing angle that reduces the number of people who can comfortably view the same image, fragility and vulnerability of the artifact, appearance of dead pixels and horizontal and / or vertical bands.
One of the most frequent problems in LCD screens is the inability to use them properly in an external environment since the presence of sunlight reduces the visibility of the screen. However, new LCD technologies overcame this difficulty allowing the use of such displays optimally in all types of conditions.
