1. Butterfly-inspired Display
Yanghao Su
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2. Emissive Display
Backlight
Apply various voltages to liquid crystals

3. Problems with Liquid-crystal Display
High Energy consumption
Over 50% of battery usage for smartphones
Frequent Screen Refreshment
Up to 60 times per second

4. Inspiration from Butterfly
No need for internal energy
No requirement on refreshment (if the picture does not change)
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5. Reflective Display Energy source: incident light
Manipulate color from gap in layers
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6. Reference