A television is a machine with a screen. Televisions receive broadcast signals and turn them into pictures and sound. Sometimes a television can look like a box. Older TVs had a large cathode ray tube in a large wooden frame and sat on the floor like furniture. Newer TVs are much lighter and flatter. There are various types of televisions. Some of them are mentioned below:
The Cathode Ray Tube (CRT):
Cathode Ray Tube is the old style ‘chunky TV’ (and monitor). The reason it’s so bulky is because the box has to house a screen and a projector gun. An image is created by firing electrons through this ‘gun’ onto a screen, exciting the particles on it. These TV formats have been on the fall since the early 2000’s with the introduction of far smaller LCD screens.
LCD’s are thin displays, normally used in laptop computers and TV screens. The term ‘LCD’ Stands for ‘Liquid Crystal Display’. liquid crystal display is a special flat panel that can block light, or allow it to pass. The panel is made up of segments with each block filled with liquid crystals. The colour and transparency of these blocks can be changed by increasing or reducing the electrical current. LCD crystals do not produce their own light, so an external light source like a florescent bulb is needed to create an image.
Contrary to popular belief, LED TVs are not a completely new format of TV. Instead they are simply an updated version of the previous LCD generation. LED use the same technology as an LCD TV, but instead of being illuminated by a florescent bulb from behind, they are lit by an array of LEDs (light emitting diodes). These are far more efficient and smaller in size, meaning the TV can be narrower.
Plasma screens are made of 2 sheets of glass with a mixtures of gases stored between the layers. These gases are injected and sealed in plasma form during the manufacturing process, hence why we have the name Plasma TV. When charged with electricity, the gases react and cause illumination in the pixels across the screen.This type of TV is arguably superior to LCD & LED in terms of contrast and colour accuracy. However the format, due to costs, is restricted to larger screens sizes, usually 40-inch +. In these larger screen sizes, buying the Plasma option tends to work out cheaper. It is also used in the super-sized 80-inch+ screens as the plasma screens are easier, and more cost effective, to produce over a larger size.
OLED stands for ‘Organic Light Emitting Diode’ and uses ‘organic’ materials like carbon to create light when supplied directly by an electric current. An OLED TV doesn’t require a backlight to illuminate the set area just as you would see in the case of LED and LCD TVs. Without this restriction of an external light source, OLED screens can be super thin and flexible. As the individual areas can be lit up directly and not via an external backlight, the colours and contrasts are much better on OLED TV’s.
Where to Buy Televisions Online
Jumia Ghana presents you a wide range of televisions in different sizes and styles at the most compelling prices. From budget to high-end TVs, you can shop for all categories of televisions from leading brands like LG, Samsung, Sony, Panasonic, TCL, Bruhm,Akai, Westward, Daewoo, Nasco, Grundig and more. The next step is to work out what size TV is most suitable for you. Check out our TV sizes available for the perfect fit for your home. Shop now and make payment on delivery!