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A reflective direct-view display adopting a polarizer can achieve 30 - 40 : 1 contrast ratio and good color saturation, except that the light throughput is sacrificed.
Meanwhile, the display mechanisms including absorption, light scattering and Bragg reflection don’t require any polarizer.
High brightness and wide view angle are necessary requirements for such displays. But their contrast ratio is usually limiited to 5 - 10 : 1 .
