Seiko Epson Corporation, commonly known as Epson, is a Japanese multinational electronics company and one of the world's largest manufacturers of computer printers and information- and imaging-related equipment.

The world's first LCD color screen was the Epson ET-10, released in 1984. It was a 2.5-inch, 320x240 pixel, active-matrix LCD display that was used in a wristwatch-sized television. The ET-10 was not the first LCD screen, but it was the first to use color liquid crystals.

The development of the ET-10 was led by Seiko Epson's R&D group, which began working on color LCD pocket televisions in 1980. The team faced a number of challenges, including the need to develop a new type of liquid crystal that could be used to create color images. They also had to develop a new type of LCD display that was small enough to fit in a wristwatch.

The ET-10 was a commercial success, and it helped to pave the way for the development of larger and more affordable color LCD displays. In the years since its release, LCD displays have become the dominant technology for televisions, computer monitors, and other electronic devices.

According to the Wikipedia/internet