P‐13.8: Stabilization of Photoalignment Layer for Liquid Crystal

Abstract

The utilization of liquid crystal (LC) devices has become more significant in a wide range of technical applications due to their ability to modify optical characteristics and their versatility. Nevertheless, a crucial factor that impacts their performance is the stabilization of the photoalignment layer, which assumes a fundamental function in regulating the orientation of liquid crystals. The present study focuses on the difficulties and progress in achieving stability in the photoalignment layer utilized in liquid crystal devices. This paper provides an overview of the existing body of research, which encompasses a wide range of procedures, materials, and techniques that have been utilized to improve the stability of these layers. In this paper, we worked with different concentration ratios of RM257 on the SD1 alignment layer with different UV light polarization times. We studied that a higher concentration of RM and longer irradiation time gives a good photostability and the thickness of RM layers is also considerable like 5 nm the photoalignment properties of these materials are made possible by using photoalignment composite materials to create high‐quality liquid crystal photoalignment. The present analysis examines the constraints identified in prior studies, which encompass concerns related to longevity, environmental sensitivity, fabrication complexity, and performance trade‐offs. The abstract further emphasizes the crucial requirement for approaches that effectively manage the trade‐off between stability, optical quality, and feasible application in real‐life scenarios. Moreover, it underscores the need to comprehend degradation mechanisms for long‐term durability. The primary objective of this research study is to present a thorough and all‐encompassing examination of the area, with a specific focus on identifying potential future breakthroughs in stabilizing photoalignment layers for liquid crystal devices by UV polarization with a suitable RM concentration.