DRIVING CIRCUIT FOR DISPLAY DEVICE, AND TEST CIRCUIT, AND TEST METHOD

摘要

PROBLEM TO BE SOLVED: To shorten test time on a driving circuit for a display device. SOLUTION: A driving circuit 100 for a display device drives a display panel 10 in a voltage range between a high negative voltage VGL and a high positive voltage VGH. The driving circuit 100 includes: an electric charge discharging circuit 33 which connects a first terminal 4 supplied with the high negative voltage VGL to a second terminal 2 of a ground voltage GND in response to a drop of a power source voltage VDC; and a test external terminal 6. The high negative voltage VGL is supplied to a substrate of the electric charge discharging circuit. The electric charge discharging circuit 33 interrupts a connection between the first terminal 4 and the second terminal 2 based on a control signal from the test external terminal 6. COPYRIGHT: (C)2010,JPO&INPIT