Triple-zero-birefringence polymer (TZBP), where photoelastic birefringence, orientational birefringence, and the temperature dependency of orientational birefringence are suppressed to negligible levels, is required to achieve real-color display. Recently, we successfully synthesized TZBPs with excellent mechanical strength and high heat resistance by using alternating copolymers, which show nonlinear relationships between birefringence properties and the composition of polymers. Here, we propose the method to design TZBPs by utilizing alternating copolymers in ternary systems. Using this method, we can further improve the characteristics of the TZBP. The TZBPs based on the alternating copolymers will achieve real-color images not only for vehicle-mounted displays but also flexible displays.
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