You would have often come across the terms ‘LED’ and/or ‘LCD’ while buying or speaking about the TVs, computer monitors or other display devices. The LED is the short form of the light emitting diode, which is an electronic component that is used in the electronic instruments for displaying light. The LCD refers to the Liquid Colour Display, which is a technology in which the use is made of the liquid crystals to provide display of different colours. The LCD TV was an improvement over the old cathode ray tube (CRT) based TV.
A LCD TV was more practical and provided and better viewing quality than the CRT based TV. These are not thick and bulky, like the old CRT TVs but, on the contrary, these are slimmer and flatter than the traditional ones. These make use of the cold cathode fluorescent lamps for backlighting purposes. This is where the main difference between the LCD and the LED TV lies. The LED lighting from behind the screen is done, not with the fluorescent bulbs but with the light emitting diodes.
This small technological change has redefined the viewing quality of the TVs which have since then become flat panel, use less of power and offer better contrast ratios. The more recent technological change has been to use the SED technology, or the surface conduction electron-emitter display technology. These imbibe the qualities of the CRT TVs and the LCD displays. So, these offer you wide display angles, higher contrast ratios, wider viewing angles of the CRT TVs and thin and slim features of the LCD TV.
Major electronic companies of the world have been producing the LED displays for different uses for a long time now. In fact, the popularity of the LED lighting displays made by top companies like Sony, Samsung, Toshiba and others has risen considerably. The total number of LCD TVs sold in a year has now been able to breach the yearly sales figures of the CRT TVs.
Another popular change has been the evolution of high definition high resolution audio-video formats. The use of high definition audio and sound quality has tremendously improved the audio and video quality. The use of special cables to connect the various devices, which support the high definition pictures and audio quality, have been able to deliver error free and undistorted quality. The high definition DVD, also called the HD DVD, stores the high resolution data and the DVD player sends these signals through the HDMI cables to the LED display networks.
The innovations in the display technology and the improved functionality of the systems making use of the high definition sounds and pictures has made possible the theatre experience to come right in your homes. Aptly called the home theatre, the system make use of the HD LCD TV, HD DVD players and HDMI connecting wires, apart from other devices like the speakers, amplifiers, etc.
Author Resource:-
Smarthouse is an author who frequently writes about various shopping products such as consumer electronics, LED Lighting.
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