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The LCD resin printers I've looked at have pretty standard resolutions like for a smartphone and I understand they use the same technology. However, color LCD screens have three RGB sub-pixels for each color pixel. Check for example this magnified picture of an S-IPS LCD screen: enter image description here It seems like they could just omit the color filter and have three grayscale pixels for each color pixel.

3D printing just uses one color - UV. So why don't they have resolutions that are multiples of three of the usual resolutions?

All results about sub-pixels that I could find are about anti-aliasing, which is different (using the existing pixels better vs. having more pixels).

Nobody
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If what Thomas Sanladerer states is correct, the Mars 2 Pro (monochrome LCD, no color filter) has a layer time approximately 1/3 as long as the Mars/Pro printers (where color LCDs are used):

This would indicate that the light passing through the LCD, when the color filter is present, is 1/3. Put it in other words, only ONE subpixel is capable of transmitting UV light.

Consequently, using all of them would not improve resolution because the other subpixels are always opaque.

FarO
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It should be as simple as using a monochrome LCD. You don't actually want any color filters to interfere with the UV light.

Do we know that LCD printers are not using monochrome LCD panels? It always seemed so obvious that I assumed it was the practice. All you need are the front and back polarizer layer and the LCD itself to rotate the light.

cmm
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