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In 2007 I was taking apart LCD screens to do multitouch experiments. One of the things that I noticed was that without the backlight panel, you could light up t
by reactordev 3y ago
In 2007 I was taking apart LCD screens to do multitouch experiments. One of the things that I noticed was that without the backlight panel, you could light up the screen using ambient light and use a camera to get infrared light to reflect your fingertips for detection. A bunch of folks in the NUI space were doing this. Projectors, LCDs, front detection, back detection, capacitive touches, optical touches, etc.
The biggest issue with this approach is color balance. Imperfect light creates imperfect colors. The LCD is tuned to display colors at the light intensity of the backlight panel it uses. Without the backlight and filters, light is uneven, unbalanced, and it will show in the screen. Fine if you’re just doing text. Not fine if you’re editing video. In the end, this is not a new approach to monitors but much much worse.