Question Monochrome LCD merged with traditionl LCD?

[shafe88]

Idea popped in my head while looking at my backlit watch, why not merge the monochrome lcd technology used in watches with traditional LCD displays to create true blacks. You'd have the monochrome and color lcd sandwiched together, allowing to turn each pixel black. For even more contrast their could be two monochrome panels, one that's completely black that blocks all light, and one that semi-transparent black that lets a little light through for those scenes that are really dark but no completely black.

 

[Alabalcho]

How often the picture you're looking at has "true black" pixels?
Also - your design would mean separate "black plane" on top (or under) existing RGB plane of the LCD, without any gain.

 

[hang-the-9]

Idea popped in my head while looking at my backlit watch, why not merge the monochrome lcd technology used in watches with traditional LCD displays to create true blacks. You'd have the monochrome and color lcd sandwiched together, allowing to turn each pixel black. For even more contrast their could be two monochrome panels, one that's completely black that blocks all light, and one that semi-transparent black that lets a little light through for those scenes that are really dark but no completely black.

There are already designs to make LCD screens with better colors, starting with the IPS stuff that has been around for a while. IPS, AMOLED, VA are some examples that work to create more black black colors.