To achieve quick-response electrowetting displays (EWDs) with accurate multiple-graylevel performance for video applications, several phenomena, such as hysteresis, charge trapping, and oil splitting, need to be addressed. This paper proposes a driving scheme that includes the decoupling driving concept, the asymmetric driving concept, the charge-trapping-suppression method, and the oil-splitting method. The proposed driving scheme was extensively investigated on a developed evaluation platform, and satisfactory results for multiple-gray levels and quick response were obtained for a 6-in. SVGA EWD. FIGURE 4 -Alternating-polarity driving scheme: (a) negative-polarity method and (b) positive-polarity method.FIGURE 5 -Decoupling AC-common driving scheme.FIGURE 6 -R-V curve induced by the driving waveforms in Fig. 5. Journal of the SID 19/11, 2011FIGURE 21 -Electrowetting display pixels with (a) AC-common driving method and (b) proposed oil-splitting-suppression method.FIGURE 19 -Response-time measurement of the EWD by chargetrapping-suppression method.FIGURE 20 -Response time of the EWD by oil-splitting suppression method.
To reduce voltage stress on TFT backplane of electrowetting displays, this paper develops a decoupling driving scheme to diminish the induced voltage stress and allow AC common to reduce the required output voltage from driver IC. Satisfactory results can be obtained on a largest area and highest resolution electrowetting display.
This paper developed a micro-pixellated GaN LED (μ-LED) array micro-display system. The μ-LED array has the features of high luminance, small optical machine size, high collimation, and lost cost. A time-separate driving method is proposed to drive the micro-display system for releasing the LED over-current and efficiency thermal degradation issues.
A new transparent display system with human-computer interaction (HCI) will become the key technology of next generation display. We have developed an interactive transparent display system with 17" transparent AMOLED. The transmittance of the transparent AMOLED can achieve 70.6% and the brightness is higher than 483 cd/m 2 . Furthermore, the interactive transparent AMOLED system has successfully verified in intelligent aquarium and ecological box with realtime interactive operation.
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