JP2001042334A5 - - Google Patents

Description

[0011]
The present invention is a liquid crystal device in which a liquid crystal layer is sandwiched between a pair of opposed substrates, wherein an aliphatic polyamide and an aromatic polyimide are directed toward a surface on the liquid crystal layer side of at least one of the pair of substrates. And an alignment film formed by laminating the layers. In addition, it is characterized in that it has an alignment film formed by laminating the aromatic polyimide thinner than the aliphatic polyamide on the surface of the aliphatic polyamide.

[0012]
According to this configuration of the present invention, by using an aliphatic polyamide having a small number of electron conjugated systems, it is possible to make the absorbance 0.03 or less as described above, and a display required for an alignment film It is possible to adjust the electrical characteristics that affect burn-in and afterimage. In addition, by laminating an aromatic polyimide that affects the alignment uniformity on the liquid crystal layer side, it is possible to obtain the liquid crystal alignment uniformity required as a product. The aromatic polyimide laminated on the aliphatic polyimide can align liquid crystal uniformly at 5 to 100 nm, and the absorbance of the entire alignment film can be 0.03 or less. In addition, since the film thickness of the aromatic polyimide is thin, the intermolecular interaction due to the stack is reduced.

Claims (11)

A liquid crystal device in which a liquid crystal layer is sandwiched between a pair of oppositely disposed substrates, wherein the surface of the liquid crystal layer side of at least one of the pair of substrates has an absorbance of 0.03 or less in a wavelength range of 380 nm to 500 nm. A liquid crystal device having an alignment film of The liquid crystal device according to claim 1, characterized in that it comprises a pre-Symbol pair of at least one of toward the surface of the liquid crystal layer side of the substrate aliphatic polyamide and aromatic polyimide and an alignment film formed by laminating a substrate . 3. The liquid crystal device according to claim 2, further comprising an alignment film formed by laminating the aromatic polyimide thinner than the aliphatic polyamide on the surface of the aliphatic polyamide. A projection type display device comprising the liquid crystal device according to claim 1, wherein the absorbance of the alignment film is 0.03 or less in a wavelength range of 380 nm to 500 nm. 3. The projection type display device having a liquid crystal device according to claim 2, wherein the alignment film is formed by laminating an aliphatic polyamide and an aromatic polyimide. A light source, color separation means for separating light from the light source into a plurality of color lights, a plurality of light modulation means for modulating the plurality of color lights separated by the color separation means, and modulation by the plurality of light modulation means Projection type display device comprising a color combining means for combining colored light and a projection lens for projecting the light combined by the color combining means, wherein at least one of the light modulation means At least one liquid crystal device is provided, in which a liquid crystal is sandwiched between substrates, and a first alignment film containing a first material is formed on a surface on the liquid crystal layer side of at least one of the substrates. In the other light modulation means, a liquid crystal is sandwiched between a pair of opposed substrates, and a second alignment film containing a second material different from the first material is at least one of the pair of substrates. Form on the surface of the substrate on the liquid crystal layer side Projection display device characterized by comprising a second liquid crystal device is. 7. The projection type display device according to claim 6, wherein the absorbance of the first alignment film is 0.03 or less in a wavelength range of 380 nm to 500 nm. 8. The projection type display device according to claim 6, wherein the first alignment film is formed by laminating an aliphatic polyamide and an aromatic polyimide. 9. The projection type display device according to claim 6, wherein the second alignment film is an alignment film formed by obliquely vapor depositing an inorganic material. 10. The projection type display device according to claim 6, wherein the second alignment film is made of a silicon oxide film. The projection according to any one of claims 6 to 10, wherein the light modulation means comprising the second liquid crystal device modulates blue color light among the plurality of color lights separated by the color separation means. Type display device.