| 摘要 |
The present invention provides a display control device capable of detecting abnormality in a screen even during display operation. For a screen (21) to which an image is intermittently projected and which is switchable between a light-transmitted state and a light-scattered state by a potential difference between a common electrode (26) and a selective electrode (27), a potential difference across a detection resistor (Rcom) connected to the common electrode (26) and a drive control signal generation unit (311), the potential difference being caused by a drive signal generated by the drive control signal generation unit (311) and applied to the common electrode (26) for generating a potential difference between the common electrode (26) and the selective electrode (27), is detected by a differential amplifier (313a), and when the potential difference detected by the differential amplifier (313a) is greater than or equal to a threshold value, a high-level signal is outputted by a comparator (313b). |
