Omni-Directional Viewing-Angle Switching through Control of the Beam Divergence Angle in a Liquid Crystal Panel
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概要
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This paper proposes a method of omni-directional viewing-angle switching by controlling the beam diverging angle (BDA) in a liquid crystal (LC) panel. The LCs aligned randomly by in-cell polymer structures diffuse the collimated backlight for the bright state of the wide viewing-angle mode. We align the LCs homogeneously by applying an in-plane field for the narrow viewing-angle mode. By doing this the scattering is significantly reduced so that the small BDA is maintained as it passes through the LC layer. The dark state can be obtained by aligning the LCs homeotropically with a vertical electric field. We demonstrated experimentally the omni-directional switching of the viewing-angle, without an additional panel or backlighting system.
- 2010-01-25
著者
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Kim Jae
School Of Chemical Engineering College Of Engineering Seoul National University
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Baek Jong-In
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Kim Ki-Han
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Yoon Tae-Hoon
School of Electrical Engineering, Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Kim Jae
School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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