A motion estimation method for determining a resultant motion vector. The segment points of the driving integrated circuit are simultaneously respectively connected to corresponding segment points of two liquid crystal panels of the bicolor liquid crystal display. In the present invention, plural films selected from a first coloring layer 161, a second coloring layer 162, and a third coloring layer 163 formed on an opposing substrate are laminated to form a light-shielding portion without using a light-shielding mask. A particular amplifier configuration involving cross-coupling of the coplanar stripline conductors may be employed to facilitate single mode operation, using a particular resonator topology so as to avoid inducing significant loss in the oscillator. To this end, there is provided a method for utilizing a sulfuric acidperoxide liquid mixture, for example, its waste liquid, in which peroxide in the sulfuric acidperoxide liquid mixture is decomposed to render it possible to utilize the liquid mixture as sulfuric acid.