Liquid crystal display television
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Liquid crystal display television is, as indicated by its name, a television using LCD technology (generally TFT), as opposed to cathode ray or plasma for its visual output.
Early LCD panel television had some difficulties displaying fast-moving action and had quite restricted viewing angles. These problems have largely been overcome in recent years, and the market for LCD televisions is booming, especially in Asia. For a long time it was widely believed that LCD technology was suited only to smaller sized televisions, and could not compete with plasma technology at larger sizes. This belief has been undermined by the announcements of ever-larger panels by companies such as Sharp Corporation, Samsung and LG.Philips. In October 2004, 40" to 45" televisions were widely available and Sharp Corporation had announced the successful manufacture of a 65" panel. Also in 2004, Samsung and Sony joined forces to build a factory in South Korea, intended to produce 60,000 panels a month, and in March 2005, Samsung announced an 82" HDTV TFT Panel. The main manufacturers have all pledged to invest billions of dollars in LCD production over the next few years, with televisions expected to be a key market.
Perhaps the best-known brand of LCD televisions at present is Sharp's Aquos range.
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- Diagonal size: inches
- Contrast ratio.
- Degree viewing angle (horizontal/vertical): i.e. 170/170, ....
- Luminance: cd/m².
- Response time.
- Dot pitch
- Max. resolution and color depth (i.e. 24-bit : 16.7 M Colors)
- Digital Video Input Standard : DVI-I.
- Mount bracket: VESA
Universal capabilities
Modern LCD TV sets are geographically universal because they have a multisystem tuner, to display PAL, NTSC and SECAM norms. And they include an electronic (step-down & step-up) transformer that automatically can use 110/200 V AC indiferently and universal grounded adapter plugs.
Also, the vast majority are no longer just for TV and HDTV (DVB). They can also be used as a computer monitor with a VGA/DVI signal, although resolution support can vary widely.
Wireless AV kit (SmartLink)
Some newer LCD TV sets can connect to a host computer via a bluetooth or WiFi wireless link. See SmartLink, Streamium.
Teletext and Electronic Programe Guide
They generally include teletext and NexTView for EPG.
See also
Wide XGA, SVGA and DVI PC interfaces, DTT, touch screen, Wake-up and sleep timer, Progressive scan, ATSS, ATS euro plus, transmitter, headphone, multiwindow features (picture in picture/picture and picture/picture and text), teletext, domotics, memory slot.
External links
- http://www.lcd-tv-reviews.com
- LCD vs Plasma TVs (http://www.scinet.cc/articles/plasma-vs-lcd/plasma-vs-lcd.html)