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A widespread practical application is using quantum dot enhancement film (QDEF) layer to improve the LED backlighting in LCD TVs.Light from a blue LED backlight is converted by QDs to relatively pure red and green, so that this combination of blue, green and red light incurs less blue-green crosstalk and light absorption in the color filters after the LCD screen, thereby increasing useful ...
Researchers announced a display that uses silicon metasurface pixels that do not require polarized light and require half the energy. It employs a transparent conductive oxide as a heater that can quickly change the pixels. The pixels are 100 times thinner than liquid crystal. Response times are under 1 millisecond.
Edge-LED lighting for LCDs allows thinner housing; the Sony BRAVIA KLV-40ZX1M is 1 cm thick, and others are also extremely thin. [citation needed] LED-backlit LCDs have longer life and better energy efficiency than plasma and CCFL LCD TVs. [35] Unlike CCFL backlights, LEDs do not use mercury in their manufacture, which is an environmental ...
Electroluminescent (EL) displays have been a niche format and are rarely used nowadays. Some uses have included the Apollo Guidance Computer 7-segment numerical displays, to indicate speed and altitude at the front of the Concorde, and as floor indicators on Otis Elevators from around 1989 to 2007, [7] mostly only available to high-rise buildings and modernizations.
It was partly motivated by a case in which the Equal Employment Opportunity Commission sued a law firm because equity partners were de-equitized when they reached age 65. Mostly, however, it was ...
This is lower than the typical lifetime of LCD, LED or PDP technology; each rated for about 25,000–40,000 hours to half brightness, depending on manufacturer and model. One major challenge for OLED displays is the formation of dark spots due to the ingress of oxygen and moisture, which degrades the organic material over time whether or not ...
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