Patent ID: 6750923
Filing Date: 2004-06-15
Classification: G02F

Abstract:
Display device comprising:a sheet-like support covered with a layer of liquid thermocromic crystals, the liquid thermocromic crystals being separately tempered by an individual power supply to individual heatable elements, the individual heatable elements being close to the liquid thermocromic crystals and being placed between the sheet-like support and the liquid thermocromic crystals, the liquid thermocromic crystals assuming different shades of color dependent on a given temperature so that the color of the liquid thermocromic crystals will form a certain pattern and a figure, the liquid thermocromic crystals being distributed over a complete layer without a specific pattern and a design of the figure being determined only by tempering the individual heatable elements located according to said design, and cooling means placed in one of the sheet-like support and between the sheet-support and the liquid thermocromic crystals for controlling cooling down of the liquid thermocromic crystals to a certain temperature lower than the given temperature, the liquid thermocromic crystals being covered by a protective coating.