Progression of TV Technologies

The television screens in our homes have come a long way, thanks to the progression of Display Technology. What was once immense and thick boxes showing motion pictures that we can barely imagine before now have come to flat screens with high-definition displays present in Smart Home Waterford today. The evolution of television screens makes it possible for us to have a colorful viewing experience that resembles real-life images.

Television such as those in television Cork has seen significant changes and breakthroughs in the last century. Initially, television offers the commercially available black and white television shows that are made possible using a white phosphor-coated screen to represent an image and an electron beam that painted that image on it.

CRT Technology

The first display technology that emerged as Cathode Ray Tube (CRT) technology was initially invented in 1897 by German physicist Ferdinand Braun characterized by its heaviness and hazardous waste materials. Russian scientist Boris Rosing utilized CRT technology in 1907 to transmit simple geometric patterns on a screen. This display technology then developed even further and was commercialized in the 1920s.

CRT has also made colored television a reality through three electron beams for each primary color of red, green, and blue. This blend of red, blue, and green light from electron beams or the RGB produces a range of visible colors on display. Magnetic charges guide the electron streams, which can cause interference with unshielded speakers or other magnetic devices when placed near CRT screens.

LED Displays

The foundation of LED display technology was founded through British radio researcher Henry Joseph Round’s discovery of electroluminescence in 1907. Furthermore, Nick Holonyack invented the first LED light or Light Emitting Diode in 1961 that can be visible to the human eye, which earned him the title of being the “father of LED.” Even though it initially lacks efficacy and color options, LED developments have paved the path for various display technology products in the market.

LED displays are flat panel displays that utilize various light-emitting diodes as pixels to display videos on a screen. It uses a backlight source for the display that can provide a facility to dim light.

LCD Displays

LCD of Liquid Crystal Display technology was invented in the 1960s that became the foundation for the possibility of familiar flat-screen televisions for households. Hd Blog LCD technology uses a backlight source by the light-modulating properties of liquid crystals that do not emit light directly than the electron beams of CRT. This display technology consumes less power as it blocks light rather than emitting light.

Plasma Displays

Plasma technology in televisions emerged along with the continuous progression of display screens. However, it did not become a widespread success until the rise of digital technology, wherein the full-color Plasma displays arrived in the market in 1995. Plasma technology involves tiny cells coated with phosphor in a glass tube filled with gas where ultraviolet lights are generated. This technology helped reduce the size of television screens due to the absence of cathode tubes.

OLED Displays

OLED or the organic light-emitting diode technology is considered an advancement in electroluminescence as it works without a backlight and displays deep black levels of color. OLEDs have a thin, flexible, and smaller appearance than LEDs. An electroluminescent layer’s emission is a film of an organic compound and organic semiconductors that emit lights in response to an electric current.

AMOLED Displays

AMOLED or the active-matrix organic light-emitting diode technology has paved the way for the advancement of OLED displays with its increased resolution and infinite contrast ratio. It was introduced to the market in 2008, and AMOLEDs have made it possible for screens to be thinner and flexible as there is no backlight and the display is not rigid.

Quantum Dot Displays

Quantum-dot display technology or the semiconductor nanocrystals called QLED (quantum dot light-emitting diode) was among the latest additions in the scene of display technology when it was introduced in 2013. Quantum dots are tiny particles used as a light source that deliver high-intensity images when hit with light. It is characterized by pure and saturated emission of colors with a narrow bandwidth due to the size of quantum dots that can determine the colors as it emits blue light.

 

For more information about the progression of TV technologies, check out this infographic created and designed by Irwins Megastore.