Premium high quality HDMI-DVI gold plated cable suitable for use in HDTV, Plasma, LCD, home theater, cable box, projectors and more. Compatible Model: HDTV, Plasma, LCD, PS3, DVD Players, Satellite & Cable boxes and more.LCD stands for Liquid Crystal Display, referring to the technology behind the increasingly popular flat panel monitors. An LCD monitor or TV is distinguishable from a traditional CRT monitor in its size. An LCD TV is sleek, thin, and dynamic as opposed to the heavy, bulky and box-like cube of a CRT. The reason is that there are only a couple of pieces of glass that are holding liquid crystals inside to create the picture.
LCD displays were initially invented to be used on laptop computers before the technology improved enough to make the jump to desktop monitors, and then again to televisions. Overall, an LCD monitor consists of five layers: a backlight, a sheet of polarized glass, a 'visor' of coloured pixels, a layer of liquid crystal solution, and a second polarized sheet of glass. By manipulating the orientations of crystals through precise electrical charges of varying degrees and voltages, the crystals act like tiny shutters, opening or closing in response to the stimulus, thereby allowing degrees of light that have passed through specific coloured pixels to illuminate the screen, creating the picture that you see.
So what is Liquid Crystal...besides an obvious contradiction in terms?
We know that there are three common states of matter: solid, liquid or gaseous. With solids, the molecules always maintain their orientation and stay in the same arrangement with respect to one another.
The molecules in liquids are completely the opposite: They can change their orientation and move anywhere within the liquid. But there are some substances that can exist in an in between state, that can be influenced by temperature, similar to that of a liquid and at the same time resembling a solid. This means that liquid crystals are neither a solid nor a liquid. That's how they ended up with their seemingly contradictory name.
So, do liquid crystals act like solids or liquids or something else?
It turns out that liquid crystals are closer to a liquid state than a solid. It takes a fair amount of heat to change a suitable substance from a solid into a liquid crystal, and it only takes a little more heat to turn that same liquid crystal into a real liquid.
Along with the in between state of the liquid crystal, there are some fluxuations in the performance of an LCD TV. As opposed to CRTs, LCDs cannot form multiple resolution images. LCD's can only produce clear images in their native resolution or a small fraction of it. The contrast ratio for LCD images is less than its CRT and plasma counterparts.
Due to their longer response time, LCDs may show ghosting and mixing when images change rapidly. The viewing angle of an LCD is narrower than a CRT or plasma display, thereby restricting the number of people who can conveniently view the image on the screen at one time. Image persistence is a common phenomenon with LCDs.
This is something comparable to screen burn-in on CRTs. As liquid crystal structure evolves, so will these difficulties with the picture qualities.
Dennis Ogilvie is the founder of 1staudiovisual UK. He can be reached for more information at his website here: http://www.1staudiovisual.co.uk
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