| 摘要 |
The invention is a digital driver that enables an output terminal to be in a high-impedance condition for driving data lines, and an inspection circuit that is provided at ends of the data lines opposite to the digital driver. The inspection circuit includes bi-directional switches provided for each of the plurality of respective data lines, and a controller that controls the switching of the switches. By using the inspection circuit provided at the opposite ends of the data lines, inspections of data-line disconnection or digital-driver output can be performed as well as determining whether or not there is a point defect. In addition, since the circuit is designed only for inspection, its size is extremely small, and the circuit can be disposed in a dead space.
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