Progression of TV Technologies

Part of every family’s home for over the years are television screens. Many people nowadays place these entertainment boxes in the living room, but include them even in the dining room, bedrooms, and even in the bathrooms! Televisions in Cork made it possible, especially now that the thick TV boxes of the old times are now replaced by flat screens with high-definition displays—all thanks to the technologies’ evolution over time.

With its rapid evolution due to market competition in the 20th century, people saw significant breakthroughs over the past hundred years. The people who enjoyed watching the moving images in black and white became an everyday gathering through home entertainment by families. The technology behind it is using a phosphor-coated screen that represents an image through an electron beam that projects the image on the screen.

Here’s a trip down memory lane to give you an idea of how televisions in Waterford and the rest of the world evolved.

CRT Technology

Also known as the Cathode Ray Tube technology, invented in 1897, it was the first colored TV technology after long years of black and white television watching. Through the brilliant mind of Ferdinand Braun, a German physicist, it was made possible. The science behind the colored images is very much the same as the black and white TV, only that this technology used 3 electron beams for the three primary colors, red, green, and blue. The blending of colors is what makes people see colored images on a screen.

LED Displays

In 1961, the LED or Light Emitting Diode invented by Nick Holonyack—the father of LED—was founded through the 1907 discovery made by the British Radio researcher Henry Joseph Ford, the electroluminescence phenomenon where light does not produce heat. Although Holonyack’s invention initially lacks color and efficacy, it paved the way for the potential development of the LED.

LCD Displays

The first LCD or Liquid Crystal Display invention is a modern watch through James Fergason, an American inventor, in 1972; this invention led to the possibility of familiar flat-screen televisions in many households have now and the type of computer monitors in Waterford and the rest of the world.

The difference from the first invention is that it does not use electron beams but rather uses liquid crystals to illuminate. It also consumes less power because it blocks light rather than emits it.

Learn more about TV developments over the years through this infographic .

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