申请人:Dainippon Ink and Chemical, Inc.
公开号:US04997942A1
公开(公告)日:1991-03-05
A 2,5-disubstituted pyrazine derivative and a 2,5-disubstituted pyrimidine derivative of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a straight-chain or branched alkyl group containing 1 to 20 carbon atoms; X represents a halogen atom; and ##STR2## represents a pyrazine-2,5-diyl or a pyrimidine-2,5-diyl group; each useful as an electrooptical display material are disclosed. Further a liquid crystal composition comprising said compounds as well as a ferroelectric display device wherein said liquid crystal composition is used are disclosed.
本文披露了一种式为(I)的2,5-二取代吡嗪衍生物和2,5-二取代嘧啶衍生物:##STR1## 其中R.sup.1和R.sup.2各自独立地代表含有1至20个碳原子的直链或支链烷基;X代表卤素原子;以及##STR2##代表吡嗪-2,5-二基或嘧啶-2,5-二基基团;均可用作电光显示材料。此外,本文还披露了一种包含上述化合物的液晶组成物以及使用该液晶组成物的铁电显示器件。