High ambient-contrast-ratio display using tandem reflective liquid crystal display and organic light-emitting device

High ambient-contrast-ratio display using tandem reflective liquid crystal display and organic light-emitting device.

A high ambient-contrast-ratio (A-CR) and large aperture-ratio display is conceptually demonstrated and experimentally validated by stacking a normally black reflective liquid crystal display (NB-RLCD) and an organic light-emitting device (OLED). Such a tandem device can be switched between the NB-RLCD mode and the OLED mode under bright and dark ambient light, respectively. The normally black c...

Transflective device with a transparent organic light-emitting diode and a reflective liquid-crystal device

Tien-Lung Chiu (SID Student Member) Haiqing Xianyu (SID Member) Zhibing Ge Jiun-Haw Lee (SID Member) Kou-Chen Liu Shin-Tson Wu (SID Fellow) Abstract — A high-transmittance transflective device based on a hybrid structure consisting of a transparent organic light-emitting diode (OLED) stacked on top of a reflective liquid-crystal device (RLCD) was conceptually demonstrated. By placing the transp...

Low-power flexible organic light-emitting diode display device.

High Contrast and Fast Response Polarization- Independent Reflective Display Using a Dye-Doped Dual-Frequency Liquid Crystal Gel

We have developed a new guest-host reflective display using a dye-doped dualfrequency liquid crystal (DFLC) gel. By combining dye absorption and maximal light scattering, the display is polarization independent and exhibits a high contrast ( 230:1). The high reflectivity (R 50%) is because of the vertical aligned structure at 0 Vrms. The fast response time ( 5 ms) is also fast due to the freque...

Cholesteric Reflective Display - Drive Scheme and Contrast