An optically efficient structure was proposed and fabricated to realize high brightness organic light emitting diode (OLED) displays based on a white OLED prepared with the air-gapped bridges on the quantum dot (QD) patterns. Compared with a conventional white OLED display, in our experiments, the optical intensity of the proposed OLED display shows the enhancement of 58.2% in the red color and 16.8% in the green color after applying the air-gapped bridge structure on QD patterns of 20 wt% concentration. This enhancement comes from the two facts that the QD patterns downconvert unnecessary blue or blue/green light to the required green or red light and the air-gapped bridges increase the color conversion efficiency of QDs by optical recycling using total internal reflection (TIR) at the interface. In addition, the color gamut of the proposed OLED display increases from 65.5 to 75.9% (NTSC x, y ratio) due to the narrow emission spectra of QDs.

New white Organic Light Emitting Diode (OLED) display was proposed and designed with an air-gap structure on the patterned Quantum Dot (QD) film to improve optical efficiency through recycling the unnecessary light. In experimental data compared with conventional OLED display, optical efficiency of red and green light in white OLED display was increased by 68.4% and 36.2% applying an air-gap structure on the patterned QD film. Those improved results adopt property about medium's reflectivity of difference. In simple terms, emitted light from white OLED transmit Color Filter (CF) and in case of over critical angle of light are reflected at an air-gap. And then, Reflected light are absorbed at the patterned QD and emitted subsequently again. Under this circulation of the rays of light could be referred to recycling system.