FILM FORMING MATERIAL FOR ELECTROWETTING, AND EVALUATION METHOD OF CONTACT ANGLE OF FILM FORMING MATERIAL FOR ELECTROWETTING, AND OPTICAL ELEMENT USING THE FILM FORMING MATERIAL FOR ELECTROWETTING

摘要

PROBLEM TO BE SOLVED: To provide a film forming material for electrowetting, with which transparency of an insulating film is ensured and a dielectric constant is increased.;SOLUTION: A film forming material for electrowetting is formed by mixing polyvinylidene fluoride as a thermoplastic fluorine-containing polymer with an ionic liquid. In relation to the film forming material for electrowetting, insulating films 5, 6 are formed on surfaces of transparent electrodes 3, 4, water and oil repellent films 7, 8 are formed on surfaces of the insulating films 5, 6, a polar liquid is dropped on the water and oil repellent films 7, 8, and a contact angle θ is measured by applying potential difference V between the polar liquid and the transparent electrodes 3, 4. The film forming material for electrowetting is evaluated by variation of the contact angle with respect to potential difference of 0, using difference from the contact angle θ at the potential difference of 0.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2016,JPO&INPIT