Is it possible/feasible to create a micro backlighting array that was per pixel?

Irenicus

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Jul 10, 2008
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We know the limitations of lcd displays vs oled is that lcd screens are not emissive, they need a backlight to light up the pixels of the lcd screen. Some tvs have local dimming where they have zones of of the led backlight that can turn on and off. Well... what about going all the way to each individual pixel? Is it possible/feasible to have a per pixel led backlight that could turn on a backlight for each individual pixel to varying degrees as needed to achieve similar results to something like an oled and perhaps beyond with increased peak brightness?



Or is that not doable with current technology or has some other engineering challenges or just too expensive?
 
 

Irenicus

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Jul 10, 2008
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But is that more expensive/feasible than using tiny white leds as the backlight instead of white oleds as the backlight shot through color filters?


And samsung on mobile using different color oleds that release their own light. LG oled sort of acts more like an lcd in terms of how a white backlight (in that case from oled instead of led) lights up different color filters / pixels, but if the white oleds remain too expensive, why not use tiny white leds instead?
 

Mr Evil

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Jul 24, 2015
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OLEDs are used because it's possible to make them small enough and dense enough to use one per pixel. Normal inorganic LEDs just can't be made like that.
 

hawtdawg

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Jun 4, 2005
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Making an actual LED backlight per-pixel would be way more expensive than a OLED. TV's with just a few hundred of them are not much cheaper than OLED TV's