Plasmanäyttö

Plasmanäyttö, also known as a plasma display panel (PDP), is a type of flat panel display technology that was popular for televisions and large monitors in the early 2000s. It works by using small cells containing electrically charged ionized gases, or plasma, which are typically mixtures of noble gases like neon and xenon. When an electrical voltage is applied across these cells, the gas within them is excited and glows, emitting ultraviolet light. This UV light then strikes phosphors coated on the inside of the display, causing them to emit visible light in red, green, or blue colors, which combine to form the image seen on the screen.

Plasma displays were known for their excellent black levels, high contrast ratios, and wide viewing angles, making them a preferred choice for home theater enthusiasts. They also offered fast response times, which were beneficial for displaying fast-moving content like sports and video games. However, plasma technology also had some drawbacks. They were generally more energy-intensive than competing technologies like LCD, and they could be susceptible to "burn-in," where static images displayed for extended periods could leave a permanent ghost image on the screen. Manufacturing plasma displays was also a complex and expensive process. Over time, advancements in LCD and later OLED technologies led to their higher energy efficiency, thinner designs, and lower manufacturing costs, causing plasma displays to gradually fade from the market.