LCD televisions, or Liquid Crystal Display TVs, use liquid crystals sandwiched between two layers of glass to create images. When electric currents pass through the crystals, they align to block or allow light, producing vibrant colors and sharp pictures. LCD TVs are known for their slim design and energy efficiency compared to older CRT models. These televisions typically come in various sizes and resolutions, including HD and 4K. They are popular for home entertainment due to their ability to display high-quality images and their relatively low cost. Many LCD TVs also feature built-in smart technology for streaming and internet connectivity.