Smart TVs are available in the market in different display sizes and panels such as LCD, LED, OLED and QLED. Manufacturers are offering a plethora of offers on the purchase of Smart TVs for the festive season. Amidst these offers, people often overlook some fundamentals while buying a television. Buying a Smart TV requires some homework along with some basic knowledge so that you can buy a product with the latest technology and good deals.
LCD is a “liquid crystal display”, a flat panel display technology commonly used in smart TVs and computer monitors. LCD displays not only look different from CRT monitors, but they also work very differently. They are not as big and heavy as CRT monitors. The difference between an LCD and an LED is based on the placement and the type of lighting used. As of 2014, plasma displays were the most commonly manufactured displays. But then the LCD took over.
In view of the current market scenario and the emergence of OLED over LED, LCD has become outdated, and the technology has not made much progress. LCD screens emit blue light, which affects not only vision but overall health as well. If used for a long time, it also causes digital eye strain. After using the LCD screen for a long time, you will notice slight blurred vision, headache, dry or tired eyes. Nowadays, LCD TVs are considered a dated technology, and LEDs have taken over the market.
Most of the options available in the market come from the LED category, which stands for Light Emitting Diode. LED TVs are cheap and they are available in many sizes. This is the most basic smart TV that we find in almost every home because you can buy 32-inch Smart LED TV on Amazon or Flipkart for just Rs.12,000.
Talking about colors and viewing angles, LED TV offers relatively better viewing angles as compared to LCD. This means that if you are not sitting directly in front of the TV, the picture and color will still appear the same way.
LED TVs are more energy-efficient because they consume less power than LCDs that use cold cathode fluorescent lamps (CCFLs). LED lights save up to 30 percent of electricity.
The only drawback with LED panels is that the contrast of TVs is not as good as compared to other modern technologies like OLED. This is because a constant backlight is always lit, resulting in a sort of whitishness even on a black background.
OLED stands for ‘Organic Light-Emitting Diode’ emissive display that does not require a backlight. They are much thinner and much more efficient than LCD displays. OLED displays are not only thin and efficient, but they also provide great image quality. They have excellent picture quality – brilliant colors, infinite contrast, fast response rates and wide viewing angles.
The most important thing in this technology is that the light is emitted on a pixel-by-pixel basis. Any white or other colored pixels that light up do not affect the pixels that are closed around them. It offers an infinite contrast level, which is much higher than the level of other current TV technologies.
Because OLED TVs do not rely on increasing the thickness of the backlight, these types of TVs are thinner and lighter than LCD or LED panels. Viewing angles are also perfect, and the response time is quite fast. However, there is the problem of image retention that has been seen in OLED TVs before. Some manufacturers have managed to fix this by implementing techniques such as pixel shifting and screen refresh.
Coming to the cost of OLED TVs. While their prices have come down over the years, they are still more expensive than LCDs and LEDs. Most of the good OLED TVs will still cost more than Rs 1,00,000, but a similar size non-OLED TV can be bought for around Rs 30,000.
QLED stands for Quantum Dot LED. They are similar to LED screens, except they have one thing extra. A layer of nanoparticles, called a quantum dot filter, is placed between the LED backlight and the front LCD panel. Better colors and better contrast are available on the screen than this. QLED TVs are covered against TV burn-in, which is permanent, permanent images caused by static graphics on the screen for long periods of time.
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