Abstract
We propose a polarizer-free liquid crystal display (LCD) consisting of two microlens array (MLA) layers, a twisted nematic (TN) LC layer, and two light-blocking masks. By changing the polarization state, focal length of the LCD can be controlled. Since two light-blocking masks have a circular stop pattern and a complementary open pattern, entire gray-scale spectrum may be realized by controlling the intensity of light passing through masks. Ultimately, fast response time characteristics could be achieved due to the alignment of LC molecules on the flat MLA surface.
Highlights
Liquid crystal displays (LCD) have been widely utilized in flat panel displays and various optical applications due to their high performance characteristics and low power consumption
We propose a polarizer-free liquid crystal display (LCD) consisting of two microlens array (MLA) layers, a twisted nematic (TN) LC layer, and two light-blocking masks
Fast response time characteristics were obtained due to the formation of a flat surface for aligning the LC molecules
Summary
Liquid crystal displays (LCD) have been widely utilized in flat panel displays and various optical applications due to their high performance characteristics and low power consumption. Because LCDs use the anisotropic optical properties of LCs to control the properties of the incident light, optical components such as polarizers and optical compensators must be included in the devices. To eliminate the need for polarizers in LCDs, polymer-dispersed LC, cholesteric LC, and guest-host LC modes have been suggested [1,2,3,4,5]. Specific problems such as a low contrast ratio, high driving voltage, and slow response time characteristics are associated with these modes
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