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One of the earliest electronic displays is the cathode-ray tube (CRT), which was first demonstrated in 1897 and made commercial in 1922. [1] The CRT consists of an electron gun that forms images by firing electrons onto a phosphor-coated screen. The earliest CRTs were monochrome and were used primarily in oscilloscopes and black and white ...
Window screens designed specifically to prevent insect entry were not patented in the United States, although by 1900 several patents were awarded for particular innovations related to window screen design. By the 1950s, parasitic diseases were largely eradicated in the United States in part due to the widespread use of window screens. [3]
The plasma display panel was invented in 1964 at the University of Illinois, ... Most earlier large LCD screens were back-lit using a number of CCFL (cold-cathode ...
About 600 of these were sold for this purpose, retailing at £50 apiece, which was very cheap for the time. Working through very thick glass made it ideal for operation in a "hostile" environment, such as a pub.
Screens date back to China during the Eastern Zhou period (771–256 BCE). [1] [2] These were initially one-panel screens in contrast to folding screens. [3] Folding screens were invented during the Han dynasty (206 BCE – 220 CE). [4] Depictions of those folding screens have been found in Han-era tombs, such as one in Zhucheng, Shandong ...
In 1983, researchers at Brown, Boveri & Cie (BBC) Research Center, Switzerland, invented the super-twisted nematic (STN) structure for passive matrix-addressed LCDs. H. Amstutz et al. were listed as inventors in the corresponding patent applications filed in Switzerland on July 7, 1983, and October 28, 1983.
The first commercially made electronic televisions with CRTs were manufactured by Telefunken in Germany in 1934, [13] [14] followed by other makers in France (1936), [15] Britain (1936), [16] and US (1938). [17] [18] The cheapest model with a 12-inch (30 cm) screen was $445 (equivalent to $9,632 in 2023). [19]
More decisively, LCDs offered higher resolutions and true 1080p support, while plasmas were stuck at 720p, which made up for the price difference. [ 4 ] Predictions that prices for LCDs would rapidly drop through 2007 led to a "wait and see" attitude in the market, and sales of all large-screen televisions stagnated while customers watched to ...