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What is the difference between LED, LCD and HD European Reseller explains to its resellers ?

New technologies are emerging so rapidly these days that sometimes – even for those with their ear firmly to the ground – it’s difficult to remember what’s what.

So, here’s a quick reminder of what lies behind some of those acronyms and phrases:- in monitors LED, LCD and HD.

 

LED – This stands for Light Emitting Diodes. When these are used to backlight a screen rather than the fluorescent lights used in traditional LCD technology, it gives designers the scope to create even slimmer and stylish screens than before. The LEDs can be positioned behind the entre panel or around the rim of the screen. There are other major advantages too; LED screens offer superb picture quality, but with less energy consumption than LCD or Plasma TV screens.

 

LCD – Or Liquid Crystal Display. Inside these screens, liquid crystals are used to produce bright and vivid pictures. These are sandwiched between layers of glass or plastic and become opaque when electricity is passed through – creating each pixel of colour. Screens can use both LCD and LED technology.

 

Plasma – ‘Plasma cells’ are divided into different compartments between two sheets of glass. Behind the glass, red, green and blue materials light up when they react with electricity and work with the plasma cells to create the images you see on your screen. Plasma screens can be made in very large sizes and because they create sharp pictures with vibrant bright colours they are a great way to watch films or live sports.

 

HD – Or High Definition; a screen with more lines per picture than standard definition – roughly five times more pixels per picture. These extra lines and pixels mean that images are sharper with clean edges and have vibrant colour too.

 

3D monitor – A monitor with a screen that enables 3D images when viewers are wearing special polarised glasses – the same as those used in most cinemas and available to buy for around £1 a pair. These screens are ideal for playing the latest 3D computer games.

 

3D TV – Through its commercial partnership with Sky, LG is making 3DTV a reality. It is the only manufacturer to offer both passive and active technology 3DTVs along with a compatible 3D Blu-ray player (see below), giving customers an extensive choice of models and methods of viewing.

 

Passive 3D TV – A television that enables viewers to enjoy 3D images when wearing special polarized glasses. Passive 3D TVs house most of the 3D technology in the TV set itself, rather than in the glasses. It works by showing polarised mages at different angles and these are captured by the lenses of the glasses. The images are then projected in separate eyes and combined by the brain to produce a 3D image. The glasses are the same as those in most cinemas and are available to buy for around £1 a pair.

 

Active 3D TV – A television that enables viewers to enjoy 3D images, but where the technology is housed within the glasses themselves, rather than in the TV set. Consequently, the glasses are far more expensive (around £200 each). They flicker very quickly to create the 3D effect and add depth by alternatively blocking one lens at a time in sync with the screen’s refresh rate.

 

Blu-Ray Player – A machine that plays Blu-Ray discs and standard DVDs.. Blu-Ray discs can store almost ten times more content than a DVD disc and the image and sound quality are much higher. Bluray discs are becoming the standard format for storing films.

3D Blu-Ray Player – A Blu-Ray disc player that can also play 3D images from Blu-ray discs when connected to a 3D TV or screen.