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plasma display
A plasma display panel (PDP) is a type of flat panel display common to large TV displays or larger. They are called "plasma" displays because they use small cells containing electrically charged ionized gases, which are plasmas.
==General characteristics==
Plasma displays are bright (1,000 lux or higher for the module), have a wide color gamut, and can be produced in fairly large sizes—up to diagonally. They had a very low-luminance "dark-room" black level compared with the lighter grey of the unilluminated parts of an LCD screen at least in the early history of the competing technologies (in the early history of plasma panels the blacks were blacker on plasmas and greyer on LCDs).〔HDGuru.com – (Choosing The HDTV That’s Right For You )〕 LED-backlit LCD televisions have been developed to reduce this distinction. The display panel itself is about thick, generally allowing the device's total thickness (including electronics) to be less than . Power consumption varies greatly with picture content, with bright scenes drawing significantly more power than darker ones – this is also true for CRTs as well as modern LCDs where LED backlight brightness is adjusted dynamically. The plasma that illuminates the screen can reach a temperature of at least 1200 °C (2200 °F). Typical power consumption is 400 watts for a screen. 200 to 310 watts for a display when set to cinema mode. Most screens are set to "shop" mode by default, which draws at least twice the power (around 500–700 watts) of a "home" setting of less extreme brightness.〔PlasmaTelevisions.org – (How to Calibrate Your Plasma TV )〕 Panasonic has greatly reduced power consumption ("1/3 of 2007 models").〔Panasonic Corporation Press http://www.energystar.gov/ia/partners/prod_development/revisions/downloads/tv_vcr/PG_E_Presentation.pdf〕 Panasonic states that PDPs will consume only half the power of their previous series of plasma sets to achieve the same overall brightness for a given display size. The lifetime of the latest generation of plasma displays is estimated at 100,000 hours of actual display time, or 27 years at 10 hours per day. This is the estimated time over which maximum picture brightness degrades to half the original value.〔PlasmaTVBuyingGuide.com – (How Long Do Plasma TVs Last? Meow )〕
Plasma screens are made out of glass.This may causes glare from reflected objects in the viewing area. Companies such as Panasonic coat their newer plasma screens with an anti-glare filter material. Currently, plasma panels cannot be economically manufactured in screen sizes smaller than . Although a few companies have been able to make plasma enhanced-definition televisions (EDTV) this small, even fewer have made 32 inch plasma HDTVs. With the trend toward large-screen television technology, the 32 inch screen size is rapidly disappearing. Though considered bulky and thick compared with their LCD counterparts, some sets such as Panasonic's Z1 and Samsung's B860 series are as slim as thick making them comparable to LCDs in this respect.
Competing display technologies include cathode ray tube (CRT), organic light-emitting diode (OLED), AMLCD, Digital Light Processing DLP, SED-tv, LED display, field emission display (FED), and quantum dot display (QLED).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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