There have been many changes in television technology over the years. Technology has had a major impact on the television market in the twenty-first century. While CRT and rear-projection TVs were prominent in the year 2000, plasma, LCD, LED, OLED, and QLED TVs quickly overtook those technologies and are now the most widely used displays on the market.

1. Plasma TV.

When an electrical current is supplied, the gas inside each of the three small cells emits either red, green, or blue light. There is a pixel-by-pixel display on the screen that shows the percentage of red, green, or blue in each individual picture element (pixel).It does not emit x-rays, unlike cathode ray tubes, which do.

Thinner screens are more common. excellent brightness and contrast. As a result of the screen's high power consumption, it becomes uncomfortable to use. "Burn in" can be caused by bright, static visual elements that retain some light output.

2. LCD TV.

There is no light coming from the liquid crystal display. In this case, a clear substrate is lighted from the backside by a layer of liquid crystals. As with plasma, each pixel has an identical three-color crystal triplet. The RGB color filters are paired with the LCDs at a sub-pixel level because crystals lack their own colors.

Edge-mounted compact fluorescent tubes or "white" LEDs can be used for backlighting. White LEDs can be put as a matrix on the back or on the edge. If there are no high voltages, then there is very little heat generated.Due to the backlighting not being genuine white, the visible color spectrum is constrained. Negative color balance Due to lighting leakage, dark areas are never truly black.

3. QLED TV.

It combines the advantages of LCD screens with the brightness of LEDs. A layer of "quantum dots" is inserted between the backlighting and the LCD in order to improve contrast. The backlight's red and green emissions are amplified by these dots, turning it blue in the process.

4.OLED TV.

Plasma TVs operate in a similar manner, but at a significantly lower power level, as each pixel is generated by a triplet of LEDs that emit light directly. Only two colors are used in OLED: a layer of blue and yellow OLED components. The red, green, and blue colors are created by first filtering the yellow and blue light. And there's a clear "white" element to lend some more radiance to the design.