More or less every time you walk down the high street you might look into a shop window and see a huge screen displaying an advert or some visual information about the shop and what it sells

1. They Shall have TV Wherever They Go
More or less every time you walk down the high street you might look into a shop window and see a
huge screen displaying an advert or some visual information about the shop and what it sells. You will
see clothing advertised with handsome men and beautiful women in widescreen splendour as they stroll
around in perfect settings, wearing fabulous clothes.
It is more than commonplace for the TV screen to replace the billboard in many cities around the world.
In some, the giant screen TV is a revolving billboard, large enough to be seen from half a mile away in
the right conditions.
Places to see advertising TV
When you go to the DIY shop, you might see little TV screens that display an infomercial for a product
they are selling. It is very possible that the TV screen they use is some brand of broadcast monitor
dedicated to running that particular infomercial over and again.
You will also have spotted them in train stations, bus and coach stations, shop windows, post offices and
other places of business, as well as outside on buildings. Most of these monitors are LCD monitors —
Liquid Crystal Display—which do not give off a direct light source. LCD monitors use pixels as the form
of display, whereby each image is broken into pixelated pieces and rebuilt on the screen using the liquid
crystal. The layers of molecules between the electrodes have two polarising filters which when
combined produce the picture. You can see typical versions of excellent screen pixilation on TVlogic
monitors or BrightSign adverts in airports, food court menus and large shopping centres.
LCD History
Without LCD, we probably wouldn’t have wide screen TV’s and computer monitors that we have now.
Liquid crystalline was discovered back in 1888 by Friedrich Reinitzer when he was extracting cholesterol
from carrots. In 1904, Otto Lehmann published a paper on Liquid Crystals, calling it Flüssige Kristalle and
in 1911 Charles Mauguin began experiments when he confined them between two thin plates in layers.
Later, in 1922 Georges Friedel said there were about three types of liquid crystal and named them as
smectics, cholesteric, and nematics. Five years later in 1927 Vsevolod Frederiks created the Freedericksz
Transition, a light valve that was electrically switched. This was the basis of all LCD technology, but it
took Marconi Wireless to patent the very first application of it as a liquid crystal valve—the basis of most
radios in those days. Flash forward to the 1990’s and about seventy years of small experimentation
under certain different scientists and LCD was coming into its own. Hitachi and NEC, along with Samsung
in 1996 started to perfect the idea of LCD screens as useful in TV technology, and this brings us around
to today’s high standard models of large screen displays.
These modern monitors have sunlight readable screens—as found in the Kindle—and they have no glare
so that even in the brightest light you won’t get a headache looking at them. It’s all very cool and
technical and makes advertising far easier.