(under subclass 106) Subject matter wherein the memory material is a crystal containing local imperfections, which will absorb (or generate) light of a particular frequency (color) depending on the energy level of the electron at the imperfection.
SEE OR SEARCH CLASS
349, Liquid Crystal Cells, Elements and Systems,
69, 71 for color liquid crystal material used in light control.
430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof,
541+, for radiation sensitive color changing composition.
