Demonstration of color filters for OLED display based on extraordinary optical transmission through periodic hole array on metallic film

By optimizing critical parameters including period, thickness, hole shape and diameter, a tri-color filter based on extraordinary optical transmission through periodic hole array on metallic film is designed for OLED display, which shows high purity, narrow bandwidth and large resonant peak in simulation, and experimentally study. Also, its practicability gets confirmed by further verifications in structure’s angle invariance, oblique incidence transmission efficiency and polarized incidence independence. The 0.2 × 0.2 mm2 tiny fabrication scale and as more than 360 periods array dense qualify for UVGA (1600 × 1200) resolution.

► Color filters based on metallic hole array have been demonstrated for OLED display.
► We achieve oblique incidence invariance and polarized incidence independence.
► The tiny structure is qualified for UVGA (1600 × 1200) resolution.
► Such filters also can play the role of the electrode layer for OLED.