TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The tetracarboxylic acid dianhydride or its derivative has formula (A or B). The diamine or its derivative has formula (I or II). FORMULAE (A,B), COLUMN 24 FORMULAE (I,II), COLUMN 25X = -O-, -S-, -SO-, -SO2-, -CH2-, -CF2-, -C(CH3)2-, -C(CF3)2- or direct coupling; andY = -O-, -S-, -SO-, -SO2-, -CH2-, -CF2, -C(CH3)2-, -C(CF3)2- or CO coupling.The cyclic compound has a dielectric constant of 30 or more and a dipole moment of 3 debye or more.    TECHNOLOGY FOCUS - POLYMERS - Preferred Precursor Liquid: 100 mass parts of the polyimide precursor liquid contains 150-900 mass parts of polar solvent and 15-750 mass parts of cyclic-compound solvent. The liquid composition is obtained by polymerizing a polyimide precursor in a polar polymerization solvent and adding a cyclic compound. The liquid composition further contains a conductor. Preferred Film: The film has a thickness of 50+/-10 mum. The film has transmittance of 50% or more when irradiated by a light of wavelength 420 nm. The glass transition temperature and water absorption of the polyimide film is 200degreesC or more and 2% or less, respectively. The polyimide film contains 20 or more transparent electrically conductive films of electrical resistivity 1x10-2 ohm.cm or less, provided on at least one surface. EXAMPLE - 4,4'-diaminodiphenyl sulfone and N,N-dimethyl acetamide (in g) (216) were introduced into a polymerization container substituted with nitrogen. After dissolving the sulfone completely in the acetamide, 2,2-bis(4-(dicarboxyphenoxy) phenol-1-propane) dianhydride BPADA (21.747) was added for 5 minutes. Biphenyl tetracarboxylic acid dianhydride BPDA (28.69) was added such that the molar ratio of bifunctional acid anhydride which reacted with diamine component was 1.03. Reaction was performed at room temperature for 1 hour. The reaction was continued for 12 hours at 40degreesC, to obtain a polyimide precursor liquid of viscosity 205 poise. When the solid content of polyimide precursor liquid was set to 100 mass%, propylene carbonate (36) was added such that the cyclic structure compound was 43 mass%. Generation of impurities in the obtained compound at low temperature region, was found to be negligible. The obtained polyamic acid liquid had favorable transparency. Using the obtained liquid, a polyimide film was produced. Thickness, light transmittance and water absorption of the obtained film were evaluated and found to be 52 mum, 76.9% and 1.9%, respectively.