Plasma TVs are flat-screen televisions that use a technology called plasma display panels (PDP) to produce images. They work by illuminating tiny cells filled with gas, which emit light when electrically charged. This allows for vibrant colors and deep blacks, making them popular for watching movies and sports. Although plasma TVs were known for their excellent picture quality, they have largely been replaced by LED TVs and OLED TVs due to advancements in technology and energy efficiency. Plasma TVs are generally heavier and consume more power than these newer alternatives, leading to a decline in their production and availability.