CLEANING SOLUTION FOR SEMICONDUCTOR DEVICE OR DISPLAY DEVICE, AND CLEANING METHOD

A cleaning solution for semiconductor devices or display devices containing a polyamine of a specified structure having two or more amino groups in adjacent positions of a carbon chain or a salt thereof and a cleaning method of semiconductor devices or display devices using the subject cleaning solution are provided. The cleaning solution for semiconductor devices or display devices of the present invention has high safety, brings a little burden on the environment and is able to easily remove etching residues on a semiconductor substrate in a short time; on that occasion, it is possible to achieve microfabrication without utterly corroding wiring materials; and furthermore, rinsing can be achieved with only water without necessity for use of, as a rinse solution, an organic solvent such as alcohols. In consequence, according to the cleaning method of the present invention, in manufacturing semiconductor devices or display devices, it is possible to extremely advantageously manufacture circuit wirings with a little burden on the environment, high precision and high quality on an industrial scale.