New approach to developing LC materials for IDS driving on reflective displays

As usage time for portable electronic terminals increases, associated problems regarding such extended use (e.g., battery holding times and eyestrain) are highlighted. Within the domain of power saving, we previously developed an idling stop (IDS) driving that avoids unnecessary refresh. Moreover, for reducing eyestrain to the highest extent possible, we calculated a luminance change in IDS driving that is not perceived as flickering by humans, via the use of a temporal modulation transfer function. According to the results of such calculations, a liquid crystal mixture that suppresses luminance changes perceived by humans was hence constructed. With the combined use of the liquid crystal mixture and a c-axis-aligned crystal oxide semiconductor with low off-state leakage current, a display could be developed wherein leakage current in IDS driving could be significantly reduced, along with enjoyed benefits of prolonged refresh intervals and power savings. The subject display is very eye-friendly, with less flickering than comparable technologies.