Oled what does it stand for

Filter by: Select category from list What does OLED mean? Couldn't find the full form or full meaning of OLED? Notify me of new comments via email. Cancel Report. Create a new account. Log In. Know what is OLED? This panel displays all of the things that you can see on the screen: images, colors and light. The difference lies in the organic material OLED uses, which is more expensive to produce. It also has less of a shelf life, too, but many argue that the benefits of OLED outweigh the expiration date.

OLED TVs bring you better image quality think blacker blacks and brighter whites , faster response times and reduced power consumption.

OLED stands for Organic Light-Emitting Diode, with the 'organic' part referring to the carbon film that sits inside the panel before the glass screen.

OLED panels emit their own light when an electric current is passed through, whereas cells in a LCD-LED display require an external light source, like a giant backlight, for brightness.

A traditional LCD screen has a backlight called a cold-cathode fluorescent light, or CCFL which is uniform across the entire back of the screen. This means that whether the image is black or white, it is being lit by exactly the same brightness across the panel.

This reduces what we call "hotspots," or areas of super bright light, because the actual light source illuminating them is uniform.

This all started a few years back when engineers at companies like Samsung and Sony introduced an array of LEDs as a backlight, which meant that if a certain part of the screen was black then those LEDs behind that portion could be turned off to make it appear blacker.

This is a better solution than a CCFL backlight, but it still has its problems. Since it's a light behind the LCD producing the illumination rather than the LCD layer itself, the illumination is not entirely in-sync with the pixel in front of it.

The result is an effect called 'blooming', whereby LED light from bright portions of the image bleeds over into areas of blackness. In an OLED TV display, the pixels themselves are the things producing the light, and so when they need to be black they are able to turn off completely, rather than relying on a backlight to turn off on their behalf. If you watch an OLED and compare it to your experience with another kind of TV panel, you'll notice the result is remarkably dark blacks in an image, and when you combine this with the bright whites of an OLED panel, you're left with a fantastically vibrant image overall.

LG and Panasonic, the most consistent producers of OLED televisions on the planet, like to use the term "infinite contrast" to describe how the self-lighting pixels switch off completely when reproducing black giving it an "absolute" black color instead of a "relative" black that only describes how dark one pixel can get compared to the brightest pixel on the screen.

Home theater TVs have evolved a lot over the past few years. The transition from P Full HD to 4K is all but complete, HDR high dynamic range has made it possible to see colors more accurately than ever, and TV makers have made their sets slimmer, smarter, and lighter. LED stands for Light Emitting Diode, and TVs that use this technology have a giant light shutter behind the screen that dims and illuminates the TVs pixels based on the action taking place on your screen.

When electricity hits the organic material, it lights up. This technology is designed to minimize light bleeding as much as possible, and works reasonably well in my experience.

In many cases burn in will go away, but prolonged exposure to the same image in the same place can make it permanent. What this means is that each tiny OLED pixel in the screen creates light depending on how much electric current you send it. Lots of current, lots of light. No current, no light.

And that's one key to OLED's excellent picture quality. OLED TV marketing often claims "infinite" contrast ratios , and while that might sound like typical hyperbole , it's one of the extremely rare instances where such claims are actually true. Since OLED can produce a perfect black, emitting no light whatsoever, its contrast ratio expressed as the brightest white divided by the darkest black is technically infinite.

And contrast ratio is arguably the most important aspect of picture quality. OLED is the only technology capable of absolute blacks and extremely bright whites on a per-pixel basis.

LCD definitely can't do that, and even the vaunted, beloved, dearly departed plasma couldn't do absolute blacks. Why can't LCD do that? It's like putting sunglasses in front of a candle.

Even the best LCDs can't completely block all the light, so in order to get those inky movie-theater-like blacks, you have to turn the backlight down the "candle" in this analogy. In the most LCDs, the entire backlight works as one, dimming the entire screen if that. Local dimming LED LCDs are far better, but still only dim and brighten relatively large "zones" of the screen independently. They're still very bright, and have better blacks for a better contrast ratio, but in a well lit room, or in direct sunlight, you'll be able to see an LCD better.

Because of that better contrast ratio, in most other situations, or in a room with curtains, TV shows and movies -- everything from standard-def to high-def to 4K with high-dynamic range -- all really pop. All TVs, to create the images you watch, use red, green, and blue mixed together to create all the colors of the rainbow well, not quite all colors, but most.

Then, using color filters, the yellow and blue light is filtered to create red, green and blue. To add a bit more brightness, there's also a clear "white" element, too. It's a lot easier if I show you:. A yellow OLED material creates yellow i. When combined with blue 1 , this creates "white" light 2. Though this seems odd and convoluted, it obviously works since LG is the only company that has successfully marketed large-screen OLED TVs in any numbers.