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Hi there, I am wanting to buy a yellow backlight and bivert IC chip like the one in this video https://www.youtube.com/watch?v=0pZqBPUSn98 . I think it looks amazing and clear. I haven't been able to see this exact backlight anywhere. It seems to have a green outer edge.

Can anyone shed any light on this matter (pun intended)?

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Michigan

The green outer edge likely comes from the unused portion of the LCD. That outline, although having no  use able pixels is still inverted. The ic is a simple hex inverter, often using an xor chip. These can be found anywhere from eBay, mouser, digikey or even your local radio shack.