Display Device Dimming Control for Motion Blur Suppression

The patent applies periodic action by dividing the frame period into multiple sub-periods and controlling the EL element to emit light in specific periods while applying reverse bias in others. The control circuit divides one frame period into a first period (with light emission), second period (reverse bias), third period (light emission), and fourth period (reverse bias), creating a periodic pattern that reduces power consumption while maintaining luminance through strategic light emission timing.

The patent segments the frame period into distinct time intervals (first, second, third, and fourth periods) with different control strategies. By segmenting the control approach, the system can apply reverse bias during certain segments to reduce power consumption while maintaining light emission during other segments to preserve luminance, thus resolving the contradiction between energy savings and display quality.

The patent implements periodic action by alternating between light emission periods and reverse bias periods in a structured pattern. The control circuit creates a periodic sequence where the EL element emits light in the first and third periods while undergoing reverse bias in the second and fourth periods. This periodic pattern ensures that reverse bias is applied frequently enough to suppress motion blur while maintaining power efficiency.

The patent applies preliminary action by implementing reverse bias in the second period before the third period's light emission. This preliminary reverse bias action prepares the EL element to reduce afterglow and motion blur effects before the next light emission phase, ensuring that motion blur is suppressed proactively rather than reactively, while still maintaining power efficiency.

The patent applies periodic action by creating a structured pattern of light emission and reverse bias periods. The control circuit divides the frame into alternating periods where the EL element emits light (first and third periods) and undergoes reverse bias (second and fourth periods). This periodic pattern maintains luminance during emission periods while using reverse bias periods to suppress afterglow and motion blur, preventing continuous light emission that would cause motion blur.

The patent converts the potentially harmful effect of continuous light emission (which causes motion blur) into a benefit by introducing controlled reverse bias periods. The reverse bias, which initially might seem to reduce luminance, actually suppresses afterglow and motion blur, thereby improving image quality. The system transforms the problem of motion blur from continuous emission into a controlled phenomenon managed through periodic reverse bias.