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.
A liquid crystal display comprising a pair of transparent substrates and liquid crystal material retained between said substrates so as to define a plurality of display cells, each display cell comprising at least one electrode formed on a first of said substrates, and red, green and blue color filters arranged in proximity to each other, and at least one electrode formed on the other of said substrates; said red color filter including a film comprising recurring units of the formula (1) and red coloring material dispersed in said film, ##STR11## said green color filter including a film comprising recurring units of the formula (2) and green coloring material dispersed in said film, ##STR12## said blue color filter including a film comprising recurring units of said formula (2) and blue coloring material dispersed in said film.
Claim 2
Dependent Claim
135 words
A liquid crystal display comprising a pair of transparent substrates and liquid crystal material retained between said substrates so as to define a plurality of display cells, each display cell comprising at least one electrode formed on a first of said substrates, and red, green and blue color filters arranged in proximity to each other, and at least one electrode formed on the other of said substrates; said red color filter including a film comprising recurring units of the formula (1) and red coloring material dispersed in said film, ##STR11## said green color filter including a film comprising recurring units of the formula (2) and green coloring material dispersed in said film, ##STR12## said blue color filter including a film comprising recurring units of said formula (2) and blue coloring material dispersed in said film.
Claim 3
Dependent Claim
19 words
The liquid crystal display of claim 1 wherein said films serve as orientation layers for said liquid crystal material.