STACK #223 May 2023

TECH FEATURE

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OLED is currently regarded as the flagship of TV technology, and here are a few reasons why… WHAT IS AN OLED TV?

Then there is QD-OLED

Quantum Dot OLED is a hybrid display that combines OLED’s self-lit pixels and quantum dots (nanocrystals that increase light output) for a more vibrant picture. They also have three sub-pixels – red, green and blue – to optimise brightness, and no white pixels to affect colour reproduction.

The ‘organic’ component is a

OLED has a wider viewing angle, keeping colour and contrast stable wherever you’re seated, and produce less blue light than

carbonised film layer that an electric current passes through to create light and colour, which means an OLED panel can be a lot thinner than an LED display that uses a liquid crystal layer.

their backlit counterparts (which is better for the eyes).

They boast an extremely fast

OLEDTVs use Organic Light Emitting Diodes – individual pixels that emit their own light. This means the display panel doesn’t require a backlighting source and can therefore deliver greater contrast, inky blacks and more vibrant colours. Self-lit pixels are also more energy efficient, which is good for the hip pocket.

Self-lit pixels are superior to backlighting for reproducing true blacks, because when a pixel isn’t powered it remains dark. OLED displays also offer peak brightness, and it’s this fusion of bright and dark that creates a truly stunning picture, particularly for HDR content.

response rate, due to the pixels’ ability to instantly switch between states. This minimises motion blur or judder in fast moving scenes, making OLED the go-to TV for gamers and sports fans.

LED backlighting has gotten a whole lot smaller, with bigger and brighter results. Here’s why you need it in aTV… WHAT IS AMINI LED TV?

to create the required brightness and colour. Where standard backlit TVs can contain hundreds of LEDs, Mini LEDs can number in the tens of thousands, and the more there are to light the pixels, the brighter the image and stronger the contrast.

packed, they provide greater control over the brightening and dimming of image zones, which is important in creating an accurate contrast ratio of highlights and shadows in a scene. They also eliminate any ‘blooming’ effect on bright objects in dark scenes, like a streetlight.

Mini LEDTVs maintain clarity, colour and depth in well-lit environments, making them ideal for rooms designed to let in a lot of natural light.

Look out for local dimming

Mini LEDs are up to 75 per cent smaller than those in LED displays. When densely

They produce strong contrast for HDR content, eliminating milky looking blacks. They deliver the type of deep blacks OLEDTVs are renowned for, along with the peak brightness of LED panels. It’s the best of both worlds.

Mini LED is an evolution of the backlighting tech used in LCD/LED screens, substantially

A feature of Mini LEDTVs, local dimming reduces the backlight in dark areas of the screen where required while maintaining the bright areas for accurate contrast ratio. This is particularly beneficial when viewing HDR content. Then there's 'Full Array Local Dimming', which uses an array of LEDs divided into zones, allowing dimming of specific areas that need to be darker without compromising those that need to be brighter.

increasing the amount of LEDs (light emitting diodes) that light the LCD (liquid crystal display) pixels to create an image.

LCD pixels require

a rear light source

14 MAY 2023

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