11/8/2023 0 Comments Lcd flat screens![]() ![]() In 2006, LCD prices started to fall rapidly and their screen sizes increased, although plasma televisions maintained a slight edge in picture quality and a price advantage for sets at the critical 42" size and larger. Epson's VPJ-700, released in January 1989, was the world's first compact, full-color LCD projector. Epson developed the 3LCD projection technology in the 1980s, and licensed it for use in projectors in 1988. This led to Japan launching an LCD industry, which developed larger-size LCDs, including TFT computer monitors and LCD televisions. ![]() These were offered primarily as high-end items, and were not aimed at the general market. In 1988, Sharp introduced a 14-inch active-matrix full-color full-motion TFT-LCD. Still, some experimentation with LCD televisions took place during this period. At the same time, plasma displays could easily offer the performance needed to make a high quality display, but suffered from low brightness and very high power consumption. LCD projection systems were generally limited to situations where the image had to be viewed by a larger audience. Throughout this period, screen sizes over 30" were rare as these formats would start to appear blocky at normal seating distances when viewed on larger screens. That same year Citizen Watch introduced the Citizen Pocket TV, a 2.7-inch color LCD TV, with the first commercial TFT LCD display. In 1984, Epson released the ET-10, the first full-color pocket LCD television. Sharp Corporation introduced the dot matrix TN-LCD in 1983, and Casio introduced its TV-10 portable TV. In 1982, Seiko Epson released the first LCD television, the Epson TV Watch, a small wrist-worn active-matrix LCD television. In 1980, Hattori Seiko's R&D group began development on color LCD pocket televisions. LCDs consumed far less battery power than even the miniature tubes used in portable televisions of the era. Portable televisions were a target application for LCDs. Refresh rates of early devices were too slow to be useful for television. Screens using reflective LCDs required no internal light source, making them particularly well suited to laptop computers. ![]() The LCDs had very slow refresh rates that blurred the screen even with scrolling text, but their light weight and low cost were major benefits. Passive matrix LCDs first became common as portable computer displays in the 1980s, competing for market share with plasma displays. History An LCD TV hanging on a wall in the Taipei World Trade Center during the Computex Taipei show in 2008. Sales of CRT TVs dropped rapidly after that, as did sales of competing technologies such as plasma display panels and rear-projection television. LCD TVs rose in popularity in the early years of the 21st century, surpassing sales of cathode ray tube televisions worldwide in 2007. LCD TVs are thin and light, but have some disadvantages compared to other display types such as high power consumption, poorer contrast ratio, and inferior color gamut. They are by far the most widely produced and sold television display type. ![]() Liquid-crystal-display televisions ( LCD TVs) are television sets that use liquid-crystal displays to produce images. Television set with liquid-crystal display An LCD TV ![]()
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