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公开(公告)号：EP0806699A3
公开(公告)日：1998-06-10
申请号：EP97302675
申请日：1997-04-18
Applicant: IBM
Inventor： CHAUDHARI PRAVEEN , LACEY JAMES ANDREW , LIEN SHUI-CHIN ALAN , FARRELL CURTIS E
IPC: C08G73/10 , G02F1/1337
CPC classification number: G02F1/13378 , G02F1/133723 , G02F2001/133738 , G02F2001/133742
Abstract: Liquid crystals on a polymer (eg polyimide) surface are aligned by exposure to a low energy and neutral Argon ion beam. The energy of the incident ions were varied between 75 and 500 eV, the integrated current density from 100 mu A/cm to 500mA/cm , and the angle of incidence over which alignment was measured was between 10 and 80 degrees. The pretilt angle of the liquid crystals could be varied between 0 and 8 degrees, by controlling the processing conditions. Degradation of the polyimide, which leads to charge migration, can be avoided by operating at low accelerating voltages.
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公开(公告)号：DE3856357D1
公开(公告)日：1999-09-09
申请号：DE3856357
申请日：1988-03-04
Applicant: IBM
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公开(公告)号：DE3855305D1
公开(公告)日：1996-06-27
申请号：DE3855305
申请日：1988-03-04
Applicant: IBM
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公开(公告)号：DE3856357T2
公开(公告)日：2000-02-24
申请号：DE3856357
申请日：1988-03-04
Applicant: IBM
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公开(公告)号：ES2134370T3
公开(公告)日：1999-10-01
申请号：ES95104274
申请日：1988-03-04
Applicant: IBM
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Patent Agency Ranking
公开(公告)号：HK1015400A1
公开(公告)日：1999-10-15
申请号：HK99100351
申请日：1999-01-27
Applicant: IBM
Inventor： CHAUDHARI PRAVEEN , LACEY JAMES ANDREW , LIEN SHUI-CHIN ALAN , FARRELL CURTIS E
IPC: C08G73/10 , G02F1/1337 , C09K
Abstract: Liquid crystals on a polymer (eg polyimide) surface are aligned by exposure to a low energy and neutral Argon ion beam. The energy of the incident ions were varied between 75 and 500 eV, the integrated current density from 100 mu A/cm to 500mA/cm , and the angle of incidence over which alignment was measured was between 10 and 80 degrees. The pretilt angle of the liquid crystals could be varied between 0 and 8 degrees, by controlling the processing conditions. Degradation of the polyimide, which leads to charge migration, can be avoided by operating at low accelerating voltages.
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公开(公告)号：AT183021T
公开(公告)日：1999-08-15
申请号：AT95104274
申请日：1988-03-04
Applicant: IBM
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公开(公告)号：DE3855305T2
公开(公告)日：1996-12-05
申请号：DE3855305
申请日：1988-03-04
Applicant: IBM
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公开(公告)号：DE3855305T3
公开(公告)日：2005-10-06
申请号：DE3855305
申请日：1988-03-04
Applicant: IBM
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公开(公告)号：SG55290A1
公开(公告)日：1998-12-21
申请号：SG1997000896
申请日：1997-03-22
Applicant: IBM
Inventor： CHAUDHARI PRAVEEN , LACEY JAMES ANDREW , LIEN SHUI-CHIN ALAN
IPC: C08G73/10 , G02F1/1337
Abstract: Liquid crystals on a polymer (eg polyimide) surface are aligned by exposure to a low energy and neutral Argon ion beam. The energy of the incident ions were varied between 75 and 500 eV, the integrated current density from 100 mu A/cm to 500mA/cm , and the angle of incidence over which alignment was measured was between 10 and 80 degrees. The pretilt angle of the liquid crystals could be varied between 0 and 8 degrees, by controlling the processing conditions. Degradation of the polyimide, which leads to charge migration, can be avoided by operating at low accelerating voltages.
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