That means an infinite contrast ratio, although how great it looks will depend on how bright the screen can go. When an OLED screen goes black, its pixels produce no light whatsoever.
A decent LCD screen might have a contrast ratio of 1,000:1, which means the whites are a thousand times brighter than the blacks.Ĭontrast on an OLED display is far higher. This tells you how much brighter a display’s whites are compared to its blacks. You’ll often see a contrast ratio quoted in a product’s specification, particularly when it comes to TVs and monitors. Take an LCD screen into a darkened room and you may notice that parts of a purely black image aren’t black, because you can still see the backlighting (or edge lighting) showing through.īeing able to see unwanted backlighting affects a display’s contrast, which is the difference between its brightest highlights and its darkest shadows. The higher the level of brightness, the greater the visual impact. This applies more to TVs, but phones boast credible video performance, and so it matters in that market too. Brightness is important when viewing content in ambient light or sunlight, but also for high dynamic range video.
Led panel types tv#
That’s a big deal in the TV world, but even more so for smartphones, which are often used outdoors and in bright sunlight.īrightness is generally measured as ‘nits’ – roughly the light of a candle per square metre. LED LCD screens can go brighter than OLED. The light from these LEDs is fired through a matrix that feeds it through the red, green and blue pixels and into our eyes.
In cheaper TVs and LCD-screen phones, LED LCD displays tend to use ‘edge lighting’, where LEDs sit to the side of the display, not behind it. This sort of dexterity isn’t possible with an LED LCD – but there are drawbacks to this approach, which we’ll come to later. The light of an OLED display can be controlled on a pixel-by-pixel basis. You might hear OLED’s pixels called ‘self-emissive’, while LCD tech is ‘transmissive’. In a nutshell, LED LCD screens use a backlight to illuminate their pixels, while OLED’s pixels produce their own light. Is OLED that much better than a good LCD display? We reveal how the two display technologies differ, what they’re good for, and how they work. In the other corner is OLED (organic light-emitting diode), used in high-end flagship phones as well as TVs The LED part just refers to the lighting source, not the display itself. It’s the most common type of display on the market, however, it might be unfamiliar because there’s slight labelling confusion with LCD (liquid crystal display).įor display purposes the two are the same, and if you see a TV or smartphone that states it has an ‘LED’ screen, it’s an LCD. In one corner is LED (light-emitting diode). Two display types that can be found across monitors, TVs, mobile phones, cameras and pretty much any other device that has a screen. For all the new technologies that have come our way in recent times, it’s worth taking a minute to consider an old battle going on between two display types.
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