The theoretically optimal aspect ratio for a foldable device is 1.414.
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Display Dynamics – November 2025: The theoretically optimal aspect ratio for a foldable device is 1.414
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The Analyst Team
Joy Guo
Follow AnalystPrincipal Analyst, China Display & Smartphone Display
As part of Omdia’s small/medium displays practice, Joy covers displays under 9 inches in size utilized in smartphones, tablets, wearables, and automotive displays. Her research touches areas such as the AMOLED ecosystem, new trends in smartphone panel displays, and the supply chain in China for smartphone displays.
Joy brings 17 years of experience to the subjects she covers. She worked previously at BOE, the giant Chinese display manufacturer, as a product manager for medical and industrial displays. She started her career at Tianma Group as an LCD module design engineer, then became manager of product design and development. She transferred to the marketing department as an analyst for mobile phone displays and then for automotive displays. Joy has a bachelor’s degree in automation from Beihang University, a major public research institution in China. She also holds a master’s degree in business management from Renmin University of China.
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