Reformation of solution process NiO thin films with UV curable polymers for the self‐alignment of liquid crystals. (21st February 2023)

• Record Type: Journal Article
• Authors: Kim, Dong Hyun; Oh, Jin Young; Yang, Da‐Bin; Lee, Dong Wook; Won, Jonghoon; Kim, Dai‐Hyun; Choi, Se‐Hoon; Kim, Jin‐Ah; Park, Hong‐Gyu; Seo, Dae‐Shik
• Is Part Of: Polymers for advanced technologies. Volume 34:Number 6(2023)
• Page Start: 1881
• Page End: 1889
• Publication Date: 2023-02-21
• Subjects: LC alignment -- nanoimprint lithography -- nanopattern -- oxide -- polymer/inorganic hybrid film -- surface modification; Polymers -- Periodicals; 668.9
• DOI: 10.1002/pat.6017
• Languages: English
• ISSNs: 1042-7147

Abstract

Abstract: Liquid crystal (LC) orientation films are one of the key technologies in display devices. Currently, the commonly used polyimide rubbing method exposes problems such as micro‐defects and static electricity. In this paper, a thin film was prepared from a mixture of UV‐curable polymer and NiO solution using the UV‐NIL method. At room temperature, all three temperatures showed good liquid crystal alignment properties. However, in terms of thermal stability, it was more thermally stable in the 1‐min sample. This means that the formation of patterns has a significant impact on orientation properties, and the change in van der Waals force due to chemical changes also affects the orientation properties to some extent. In addition, excellent electro‐optical properties were also confirmed.