NOVELTY - A laminated structure (10) has substrate (11), wettability change layer (12) provided on surface of the substrate, and conductor layer (13) formed on ultraviolet-ray irradiated region (12a) of the wettability change layer. The wettability change layer contains polyimide (I) whose surface free energy changes by irradiation of ultraviolet ray. The polyimide is obtained by carrying out dehydration-cyclization of polyamic acid, and is soluble in organic solvent.    USE - Laminated structure used for electronic device for array of image display medium for image display apparatus (all claimed). Uses include but are not limited to electrophoresis panel, liquid crystal display element, organic electroluminescent element, personal computer, copier, motor vehicles, aircraft, solar cell and radio-frequency identification tag.    ADVANTAGE - The laminated structure has excellent insulating property.    DETAILED DESCRIPTION - A laminated structure has substrate, wettability change layer provided on surface of the substrate, and conductor layer formed on ultraviolet-ray irradiated region of the wettability change layer. The wettability change layer contains polyimide of formula (I) whose surface free energy changes by irradiation of ultraviolet ray. The polyimide is obtained by carrying out dehydration-cyclization of polyamic acid, and is soluble in organic solvent.    A=group chosen from formulae (i)-(iv);    R1-R4=H, fluoro or 1-4C alkyl;    B1=group chosen from 10 groups e.g. groups of formulae (a)-(e);    B2=group chosen from formulae (f)-(i);    m'=5-13;    n,m=natural number;and    or n+m=1-30.    INDEPENDENT CLAIMS are included for the following:    (1) electronic device, which has two or more laminated structures; and    (2) electronic device array, which has two or more electronic devices.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the laminated structure. (Drawing includes non-English language text)    Laminated structure (10)    Substrate (11)    Ultraviolet-ray irradiated region (12a)    Ultraviolet-ray non-irradiated region (12b)    Conductor layer (13)