A basic transparent OLED screen doesn't, but is often slightly tinted, and (indoors) its pixels are bright enough that the transparent pixels are dark enough to appear black by comparison. The same way you can run a projector on a white wall during the day, and its "black" is just the normal wall color.
But while I've never seen it, I don't see why you couldn't put a transparent OLED over an LCD screen like the one in your laptop. Combined, I think they'd give you every combination of color and opacity you could want.
I don't know if there's any technology that combines the two capabilities into a single layer.
But while I've never seen it, I don't see why you couldn't put a transparent OLED over an LCD screen like the one in your laptop. Combined, I think they'd give you every combination of color and opacity you could want.
I don't know if there's any technology that combines the two capabilities into a single layer.