Organic semiconductor solution contains a polyacene compound and a solvent where >=1 part can dissolve the polyacene compound. The polyacene compound-soluble solvent is an aromatic halogenated hydrocarbon, aliphatic halogenated hydrocarbon, aromatic hydrocarbon, lactone compound and/or carbonate compound. Independent claims are included for: (1) an organic semiconductor thin film containing the polyacene compound; (2) the manufacture of this thin film by doping electron donating atoms or electron receiving atoms which can form a charge transfer complex with the polyacene compound into the organic semiconductor thin film formed by vaporizing the solvent from the solution; (3) an organic semiconductor element; (4) a transistor composed by the organic semiconductor film; (5) the manufacture of the organic semiconductor element; (6) a display device having many pixels including the semiconductor elements or transistors; and (7) the manufacture of the display device.