Premium picture quality is within reach with the 42XV540U. PixelPure 4G digital video processing and ClearFrame 120Hz frame rate technology produce a cleaner picture that is great for high-speed action. Combined with the rich and vibrant colors supported by ColorBurst and the deep blacks that are made possible by DynaLight, this set is a powerhouse home theater addition.Customer Review: At your own risk
I bought a toshiba plasma tv 3 1/2 years ago. A component broke and the repairman ordered the part and Toshiba customer service promised to send it in 2 months. Now, 3 months later, the part has not arrived and Toshiba says the part is not being manufactured anymore. So, buy a Toshiba at your own risk. As for me, I will never buy anything Toshiba anymore.
Customer Review: Nice... while it lasted.
For the first two weeks of owning this product I had a wonderful tv. It was too good to last. The screen died. The audio still worked but there was no picture. Toshiba tried to blame me; surely I, the ignorant customer, had done something wrong.Purhaps I had set it outside in a rainstorm or dropped it off my roof. Nope. Sorry Toshiba, I didn't do anything except try to watch tv with my wonderful television. You created a subpar product and refuse to assist you customers once your products stop working. Long story made short, I had to fight for 2 months with Toshiba representatives who refused to cover repair costs, transportation to the repair facility (they wanted $300 to drive the tv 3 1/2 hours), or to refund my purchase. They changed their minds when I contacted my lawyer. Apparently unless a Toshiba employee personally takes a bat to your television they will refuse to cover the repair costs. They make good short term televisions but their customer service is absolutely appalling. Don't buy this tv if you're worried about getting an onion and don't have a good lawyer. Go with a Samsung. I bought an LN46A650 to replace this tv and have been extremely pleased with my new purchase. Toshiba has permanently lost this customer.
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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