Flat screen TVs, also known as flat panel TVs or thin TVs, became popular in the mid to late 2000s. Prior to this, most TVs were CRT (cathode ray tube) TVs, which were much bulkier and heavier due to the technology they used.

Flat screen TVs started to gain traction in the mid-2000s, with the introduction of LCD (liquid crystal display) and plasma TVs. These TVs were thinner and lighter than CRT TVs, and offered improved picture quality and energy efficiency.

As flat screen TVs became more popular and affordable, they began to replace CRT TVs as the dominant type of TV on the market. Today, flat screen TVs are the most common type of TV, and can be found in homes and businesses around the world.

Overall, the popularity of flat screen TVs has been driven by their thin and lightweight design, improved picture quality, and energy efficiency compared to CRT TVs. They have become the standard for TVs and are now the most common type of TV on the market.

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