Patent attributes
A segment driver (100) that drives a display panel is provided with a signal output circuit (140), a first voltage generation circuit (15_1), a voltage output circuit (160), and an inspection circuit (170). The first voltage generation circuit (15_1) generated a voltage to be applied to an electrode (Ta1) based on a display signal indicating a first voltage or a second voltage that is higher than the first voltage. The voltage output circuit (160) includes an inspection voltage output line (Lx) for outputting an inspection voltage (Vd) for inspecting an application state of a voltage to the electrode (Ta1). The signal output circuit (140) includes a signal voltage output line (Ly) for outputting a signal voltage (Vs) of the display signal. The inspection circuit (170) determines that, if the inspection voltage (Vd) is a voltage in a threshold range from a first threshold voltage that is higher than the first voltage to a second threshold voltage that is lower than the second voltage and is higher than the first threshold voltage, the inspection voltage (Vd) is erroneous, and outputs an inspection signal (DET) indicating an error.
