| 摘要 |
PURPOSE: To inexpensively and simply inspect the electric characteristics of a redundant circuit simultaneously with that of an active circuit by impressing an inspection signal between the active circuit and the redundant circuit and inspecting an output signal at the time of inspecting the electric characteristics of an electric circuit provided with the redundant circuit. CONSTITUTION: In the case of inspecting a pixel 11 (10) part, switches SW-X1, SW-X2 connected to a scanning signal line 2 are closed under the control of an inspection device 6 and an inspection input line switch 8 SW-YIN 1 and an inspection output line switch 9 SW-YOUT 2 are closed. When prescribed inspection signals are impressed to scanning signal lines 2 X1 , X2 and a data signal line 3 Y1 of a LCD circuit 1 and an inspection signal is supplied between an active circuit and a liquid craystal redundant circuit, an output current 11 e.g. from a data signal line 3 Y2 generates different outputs in accordance with a normal state and an abnormal state and the output is measured and inspected by the inspection device 6. Since an inspection is executed by impressing an inspection signal between the active circuit and the redundant circuit, the electric characteristics of the redundant circuit also are simultaneously inspected. Consequently inspection is simply executed without requiring an expensive inspection device.
|
