[Quoth]

Cameras use monochrome sensors with a colour filter on top, unless using a splitter and three sensors. Used to be stripe, but now variations of Bayer. So the camera sensor is 3 x1 pixels or 2 x 2 pixels per usable image pixel.

LCDs are monchrome, like eink, except illuminated from the back instead of the front. Some still use RGB stripe filters, but many now use Bayer pattern filters. QLED are actually mono LCD with quantum dots to frequency change blue light to red or green. They can use a Bayer pattern or stripe, but blue bits are clear and the backlight is pure blue LED source instead of white*.

The physical and mathematical principles of colour filters on an image detector and image generator are the same. Early colour using mono photographic film had the filter on it. After development using image reversal (so it's not a negative) the film was projected using the original integral colour filter (often random R G B particles).

[* White LEDs don't exist. They are either really multiple R, G & B LEDs, which is rubbish colour rendition, or a single blue or violet LED with a phosphor to make it white by adding colours energised by blue or violet.]