A method is provided for removing a polarizing sheet with a tool that includes a handle including a main body forming therein a channel for receiving adhesive dissolving liquid, a piston device mounted inside the channel, and a guide tube mounted on the main body, and a blade mounted to the handle. To achieve this, in the semiconductor integrated circuit incorporating the test configuration that comprises a combinational circuit and a scan chain constructed by connecting a plurality of scan flip-flops in a chain, the scan chain is divided into a plurality of sub scan-chains each of which has a partially rotational scan function and a test response compaction function. Cascode devices are provided between the respective current source devices Qs1 to Qsn and the corresponding current steering switches for preventing capacitive feedthrough of voltage swings on the current steering switches for minimizing crosstalk between the DACs. The solar electrolysis power source uses hydrogen gas that is hermetically sealed from production to use. Thus, stress concentration on the outer lead can be prevented.