公开(公告)号：HK57896A

公开(公告)日：1996-04-12

申请号：HK57896

申请日：1996-04-03

Applicant: CASIO COMPUTER CO LTD

Inventor： SHINODA ISAMU

IPC: C09K19/12 ,  C09K19/14 ,  C09K19/30 ,  C09K19/34 ,  C09K19/42 ,  C09K19/44 ,  G02F1/13 ,  G09F9/35

公开(公告)号：DE3583096D1

公开(公告)日：1991-07-11

申请号：DE3583096

申请日：1985-09-19

Applicant: CASIO COMPUTER CO LTD

Inventor： SHINODA ISAMU

IPC: C09K19/12 ,  C09K19/14 ,  C09K19/30 ,  C09K19/34 ,  C09K19/42 ,  C09K19/44 ,  G02F1/13 ,  G09F9/35

公开(公告)号：JPH0579715B2

公开(公告)日：1993-11-04

申请号：JP20009084

申请日：1984-09-25

Applicant: CASIO COMPUTER CO LTD

Inventor： SHINODA ISAMU

IPC: C09K19/12 ,  C09K19/14 ,  C09K19/30 ,  C09K19/34 ,  C09K19/42 ,  C09K19/44 ,  G02F1/13 ,  G09F9/35

公开(公告)号：JPS581774A

公开(公告)日：1983-01-07

申请号：JP9897081

申请日：1981-06-25

Applicant: CASIO COMPUTER CO LTD

Inventor： SHINODA ISAMU

IPC: C09K19/00 ,  B01D15/00 ,  C09K19/52 ,  G02F1/13 ,  G09F9/00 ,  G09F9/35

Abstract: PURPOSE:To provide a liquid crystal display device consisting of liquid crystal material purified with activated alumina and having a high reliability and a long service life with reduced power consumption. CONSTITUTION:Activated alumina and liquid crystal material to be purified are mixed thoroughly so that ionic impurities in the liquid crystal material may be adsorbed by activated alumina. The material is then filtered by means of a mesh filter. The liquid crystal display device is prepared by filling the purified material into a cell made by bonding a pair of electrode plates with a sealant interposed between them. The display device exhibits higher reliability than those consisting of conventional liquid crystal material purified with ion exchange resin and has a long service life with reduced power consumption.

公开(公告)号：JPH032918B2

公开(公告)日：1991-01-17

申请号：JP9897081

申请日：1981-06-25

Applicant: CASIO COMPUTER CO LTD

Inventor： SHINODA ISAMU

IPC: C09K19/00 ,  B01D15/00 ,  C09K19/52 ,  G02F1/13 ,  G09F9/00 ,  G09F9/35

公开(公告)号：JPS5829878A

公开(公告)日：1983-02-22

申请号：JP12750881

申请日：1981-08-14

Applicant: CASIO COMPUTER CO LTD

Inventor： MORITA HIDEHIRO ,  YOSHIDA AKIO ,  SHINODA ISAMU

IPC: C09K19/44 ,  G02F1/13 ,  G09F9/00 ,  G09F9/35

Abstract: PURPOSE:To provide a liquid crystal composition that is excellent in the chemical stability, and whose threshold voltage is below 1.5V, by mixing six specified compounds. CONSTITUTION:5-30pts. by weight (hereinafter parts represent part by weight) biphenyl nematic liquid having formulaI(wherein R represents 1-8C alkyl or alkoxy), 10-50pts. phenylcyclohexane nematic liquid crystal having formula II (wherein R represents 1-8C alkyl), 5-20pts. biphenylcyclohexane nematic liquid crystal having formula III (wherein R represents 1-8C alkyl), 10-25pts. ester nematic liquid crystal having formula IV[wherein R represnets 1-8C alkyl, and X represents (thio)ester], 10-25pts. cyclohexane ester nematic liquid crystal having formula V and/or VI[wherein R represents 1-8C alkyl, and X represents (thio)ester]and 5-20pts. ester liquid crystal analog having formula VII (wherein R represents 1-8C alkyl, and X represnets (thio)ester]are mixed.