Compositions – Light transmission modifying compositions
Patent
1992-04-14
1993-07-20
Stoll, Robert L.
Compositions
Light transmission modifying compositions
359 66, 359 68, 359 75, 252586, 252589, 528188, 528 22, 425 1, F21V 900, G02F 113, G02B 523, C08G 6300
Patent
active
052290395
ABSTRACT:
The present invention relates in general to color liquid crystal displays and more particularly to color liquid crystal displays in which the color filter functions as the orientation layer. A film which functions as both an orientation layer controlling the orientation of liquid crystal molecules and as a color filter is described. A process for producing the combination film is also described. The process comprises synthesizing a polyimide precursor by the ring-opening polyaddition reaction of a diamine component and an acid anhydride component in a solvent. Wherein the diamine component has a predetermined structure. Further, the acid anhydride component has a predetermined structure. Finally, the process includes the step of dispersing coloring materials in the polyimide precursor to form the filter.
REFERENCES:
patent: Re33342 (1990-09-01), Kohtoh et al.
patent: 4381886 (1983-05-01), Yokokura
patent: 4590103 (1986-05-01), Ahne et al.
patent: 4802743 (1989-02-01), Takao et al.
patent: 4818075 (1989-04-01), Takao et al.
patent: 4837098 (1989-06-01), Shimamura et al.
patent: 4877697 (1989-10-01), Vollman et al.
Ikeda Ayumi
Koseki Toshihiko
Ueki Toshihiro
Aker David
Harris C.
International Business Machines - Corporation
Stoll Robert L.
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