CHEMISORPTIVE SUBSTANCE, ALIGNED LIQUID-CRYSTAL FILM AND LIQUID-CRYSTAL DISPLAY ELEMENT BOTH MADE BY USING THE SAME, AND PROCESSES FOR PRODUCING THESE
申请人:MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
公开号:EP0962460A1
公开(公告)日:1999-12-08
The present invention provides a new chemical adsorbent which can form an extremely thin and transparent film in nanometer order which is fixed uniformly and firmly on a substrate, and give an alignment characteristic of high thermal stability to the thin film; as well as a liquid crystal alignment layer and a liquid crystal display device having a desirable alignment characteristic, a superior alignment control force over a liquid crystal molecule, and a superior thermal stability by using the above-mentioned chemical adsorbent. This purpose can be actualized by developing a new compound which is transparent and stable in a range of a visible ray (a wavelength from 400 nm to 700 nm), and has a photosensitivity in a range of an ultraviolet ray and a far-ultraviolet ray (a wavelength from 200 nm to 400 nm), and can form a thin film in a monolayer through a chemisorption on a substrate.
本发明提供了一种新的化学吸附剂,它能形成纳米级的极薄而透明的薄膜,均匀而牢固地固定在基片上,并使薄膜具有高热稳定性的配向特性;还提供了一种液晶配向层和液晶显示装置,通过使用上述化学吸附剂,该装置具有理想的配向特性、对液晶分子的超强配向控制力和超强的热稳定性。为了实现这一目的,可以开发一种新的化合物,它在可见光(波长 400 纳米至 700 纳米)范围内具有透明性和稳定性,在紫外线和远紫外线(波长 200 纳米至 400 纳米)范围内具有光敏性,并能通过化学吸附在基底上形成单层薄膜。