High transmittance and deep RGB primary electrochromic color filter for high light out-coupling electro-optical devices

• DOI: 10.1364/oe.27.025531
• Publication Date: 2019-08-23T18:52:07Z
• Authors: Jin Hwan Park; Ik Jang Ko; Gyeong Woo Kim; Hyuna Lee; Seung Hye Jeong; Ju Young Lee; Raju Lampande; Jang Hyuk Kwon
• Keywords: Primary color; RGB color model; Color filter array; Colorimetry; Digital Light Processing

We report a transmittance controllable electrochromic color filter (TCECF) by incorporating new leuco dyes and their optimized composition. Each primary red (R), green (G), blue (B) has an excellent of more than 84% at 650 nm, 540 450 the coordinates are from white (0.332, 0.347) to deep-red (0.621, 0.344), deep-green (0.327, 0.646), deep-blue (0.179, 0.085), respectively. Also, each TCECF good coloration efficiencies 188.7 cm2 C-1 189.3 147.8 with high optical density change. A full producible (ECF) is designed fabricated integrating RGB filters refractive index matching adhesive layer. The three-stack ECF enables about 61% for clear light extraction, it can produce various colors including RGB. This technology will be very useful out-coupling electro-optical applications, such as smart lighting, window, display.