Patent ID: 8331009

Claim:
A method for mixing colors in a display unit having a raster arrangement of pixels in which each pixel has at least three color levels arranged one behind the other or side by side, formed by transparent chambers having interiors that are connected to reservoirs via channels, a colored liquid plus a clear transparent medium not miscible with the colored liquid being movable into the color levels and the reservoirs, the method comprising: moving the colored liquid and the clear transparent medium in alternation and in rapid succession into the color levels, a time portion during which the colored liquid or the clear transparent medium is located in the color levels being controllable, wherein a change between the colored liquid and the clear transparent medium moving into the color levels is controlled according to the time portion, and wherein the time portion dictates a perceived color of each pixel, wherein the change between the colored liquid and the clear transparent medium takes place at a frequency greater than 10 Hz.