| 摘要 |
PROBLEM TO BE SOLVED: To provide an inspection device which is capable of inexpensively and surely measuring an operation speed of a liquid crystal display module without complicating a driving circuit neither increasing costs. SOLUTION: A current value supplied from a power source to the driving circuit of the liquid crystal display module is detected by a current detection device, and the detected current value is converted to a time series digital signal by an AD conversion circuit, and an actual operation speed of the liquid crystal display module is detected on the basis of a cycle of periodical changes of the time series digital signal. COPYRIGHT: (C)2007,JPO&INPIT
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