Yung-Hsiang Chiu

Critical Field for a Hysteresis-Free BPLC Device

A correlation between the peak electric field and hysteresis of a polymer-stabilized blue-phase liquid crystal (BPLC) is found experimentally. If the peak electric field is below ~ 5 V/μm, hysteresis is negligible. Based on this guideline, we propose elliptical protrusion electrodes to reduce peak electric field which in turn eliminates hysteresis while keeping a high transmittance. Such a hysteresis-free BPLC device is highly desirable for display and photonic applications.

71‐1: Development of Micro‐Pixellated GaN LED Array Micro‐Display System

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.

Accurate-gray-level and quick-response driving methods for high-performance electrowetting displays

Abstract— To achieve quick-response electrowetting displays (EWDs) with accurate multiple-gray-level 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.

7.4: A Stacking Color Electrowetting Display for the Smart Window Application

The electrowetting display with the property of transflective is applicable as windows. However, low transmittance is a key issue of a stacking color electrowetting display as a window application. To improve the transmittance, an advanced oil splitting suppression waveform was proposed. Finally, a stacking color electrowetting display for the smart window application has been demonstrated. And the transmittance up to 30% has been attended.

27.3: A Decoupling Driving Scheme for Low Voltage Stress in Driving a Large-Area High-Resolution Electrowetting Display

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.

56.3: A Charge Trapping Suppression Method for Quick Response Electrowetting Displays

To achieve quick response electrowetting displays for video applications, the charge trapping phenomenon should be well coped with. for this purpose, an asymmetrical driving concept is proposed and a charge-trapping suppression method is developed in this paper. The performance of the proposed method was investigated and satisfactory results were obtained.