A coloring layer composition for a chromatic device of the present invention contains an oxide such as tungsten oxide or niobium oxide and so on as a solute, water and an organic solvent such as propanol. In the step of forming a reduction coloring layer, a film is formed by using a peroxotungstic acid...http://www.google.fr/patents/US5997776?utm_source=gb-gplus-shareBrevet US5997776 - Color layer composition for chromatic device and method of producing chromatic device by using same
Color layer composition for chromatic device and method of producing ...
