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How Does LCD TV Work?

Liquid crystal technology has given birth to the slim, cool-looking, bright TV displays that are popping up everywhere from bank lobbies to living rooms. But you may wonder "how does LCD TV work?"

LCD TV comes in the design called Twisted Nematic (TN). It is a naturally twisted crystalline structure that reacts to electric currents by untwisting to varying degrees depending on the voltage of the current to which it is exposed. These TN crystals are stuck between panes of polarized glass and the untwisting allows different amounts of light to pass through. Basically, LCD displays can switch between light states (where the liquid crystals are fully twisted) and dark states (where the liquid crystals are fully untwisted), or somewhere along the gray scale in between. The TN liquid crystal is the most common type of liquid crystal being used in display applications today, including LCD TVs and monitors.

A LCD display consists of millions of liquid crystals, or pixels, that are manipulated to form images. Pixels are turned on by disabling the passage of light and turned off by enabling the passage of light, therefore creating an image in front of the viewer. A florescent bulb emiting white light through the transparent panels in a LCD TV. When all liquid crystals are completely twisted and therefore able to direct the full spectrum of light out through, you will see the white display. Color filters are used for color production in the LCD TV. To establish the color, each pixel is divided into three subpixels, red, green, and blue, working together to create the LCD pixel's overall hue.

I hope the above brief overview will help you better understand "how does LCD TV work."