|
A quantum dot display is an experimental type of display technology. Quantum dots (QD) or semiconductor nanocrystals could provide an alternative for commercial applications such as display technology. This display technology would be similar to organic light-emitting diode (OLED) displays, in that light would be supplied on demand, which would enable more efficient displays. Quantum dots could support large, flexible displays but would not degrade as readily as OLEDs, theoretically making them good candidates for flat-panel TV screens, digital cameras, mobile phones and personal gaming equipment.〔(Quantum-dot displays could outshine their rivals ), New Scientist, 10 December 2007〕〔(Quantum Dot Electroluminescence )〕〔(Nanocrystal Displays )〕 At present, they are used only to filter light from LEDs to backlight LCDs, rather than as actual displays. Properties and performance are determined by the size and/or composition of the QD. QDs are both photo-active (photoluminescent) and electro-active (electroluminescent) allowing them to be readily incorporated into new emissive display architectures.〔(The future of cadmium free QD display technology (QD TV) )〕 ==History== The idea of using quantum dot as a light source emerged in the 1990s. Early applications included imaging using QD infrared photodetectors, light emitting diodes and single-color light emitting devices. Starting from early 2000, scientists started to realize the potential of developing quantum dot for light sources and displays. A widespread practical application is emerging in so-called ''Quantum Dot TVs''. It must be noted however, that these new TV sets are still LCD TVs as far as picture generation is concerned. QDs are used to improve the backlighting. In addition to using LEDs for backlighting, light from a blue LED is converted by QDs to relatively pure red and green, so that this combination of blue, green and red light incurs less absorption of unwanted colors by the color filters behind the LCD screen, thereby increasing useful light throughput and providing a better color gamut. The first TV manufacturer shipping TVs of this kind was Sony in 2013, although not yet labeled as a QD TV.〔(Sony BRAVIA TV with ''Triluminos'' technology )〕 At the Consumer Electronics Show 2015, Samsung Electronics, LG Electronics, the Chinese TCL Corporation and Sony showed QD-enhanced LED-backlighting of LCD TVs.〔(IEEE Spectrum: ''CES 2015 - Placing bets on the New TV Technologies.'' 7 January, 2015 )〕 〔http://www.cnet.com/news/lg-leaps-quantum-dot-rivals-with-new-tv/〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quantum dot display」の詳細全文を読む スポンサード リンク
|