The led flat panel ceiling light is a fairly simple concept that has gone on to revolutionize the general illumination market, and its origins come from a surprisingly odd source — televisions.
With the advent of "Flat" Televisions, a way to illuminate the thin-film-transistor liquid-crystal display (or TFT LCD) screens was needed.
A frame and integrated heat sink is where it starts, with a series of LED chips along the perimeter all pointing towards the centre. But, getting light to shine through plastic doesn’t work all that well. That’s where the real science begins. The lightguide.
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