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

摘要: A high ambient-contrast-ratio (A-CR) and large aperture-ratio display is conceptually demonstrated experimentally validated by stacking a normally black reflective liquid crystal (NB-RLCD) an organic light-emitting device (OLED). Such tandem can be switched between the NB-RLCD mode OLED under bright dark ambient light, respectively. The characteristic of RLCD also helps to boost A-CR OLED-mode operation. To obtain better image quality in mode, bumpy transmissive structure used eliminate specular reflection increase viewing angle performance that results CR>2:1 over 55° cone. Besides, such external quantum efficiency 49.4%. In our experiments, regardless intensity kept higher than 100:1.