Pixel purists say pixels have to be in a square or rectangular grid. Stitching is a good analog example. Yet others think that 2-subpixel “pixels” (RG and BG, alternating in a checkerboard pattern), as seen on some OLED screens should be counted as half-pixels, like on Bayer-filter cameras.
Anyway, there are digital systems with other layouts: https://www.wikidata.org/wiki/Q137757955
Early pocket color LCD TVs, cameras and camcorders would use hexagonal grids similar to shadow mask CRTs’ phosphor dots.
By the way, neither color CRT phosphor dots nor stripes are pixels because they’re not individually addressable. In fact, depending on the beam’s position, a single phosphor dot can represent a gradient, and on B/W CRTs the whole screen is a single phosphor-covered surface.
Pixel purists say pixels have to be in a square or rectangular grid. Stitching is a good analog example. Yet others think that 2-subpixel “pixels” (RG and BG, alternating in a checkerboard pattern), as seen on some OLED screens should be counted as half-pixels, like on Bayer-filter cameras.
Anyway, there are digital systems with other layouts:
https://www.wikidata.org/wiki/Q137757955
Early pocket color LCD TVs, cameras and camcorders would use hexagonal grids similar to shadow mask CRTs’ phosphor dots.
By the way, neither color CRT phosphor dots nor stripes are pixels because they’re not individually addressable. In fact, depending on the beam’s position, a single phosphor dot can represent a gradient, and on B/W CRTs the whole screen is a single phosphor-covered surface.