초록 ▼

In a twisted nematic type liquid crystal display element wherein two electrode substrates, in which an electrode having desired patterns and an orientation controlling film for facilitating the orientation of liquid crystal molecules along a given direction are disposed in this order on the inner su

In a twisted nematic type liquid crystal display element wherein two electrode substrates, in which an electrode having desired patterns and an orientation controlling film for facilitating the orientation of liquid crystal molecules along a given direction are disposed in this order on the inner surface of each transparent substrate such as glass, are placed in parallel with a certain distance, the periphery of the transparent substrates are sealed with a sealing medium, and a nematic liquid crystal is enclosed in the space thus produced, the one characterized by using as the orientation controlling film a film of polymer having imide rings and as the sealing medium a calcined glass having a low melting point obtained by adding 1 to 5 parts by weight of either SiO2 or Al2O3 or both of SiO2 and Al2O3 to 100 parts by weight of a composition comprising: B2O3－7.5-14.5% by weight, PbO－71.5-81.2% by weight, ZnO－0-14.0% by weight, CuO－0-3.0% by weight, and Bi2O3－1.5-3.0% by weight can give a liquid crystal display element having high reliability and being excellent in heat resistance, moisture resistance, durability and the like.

대표청구항 ▼

In a liquid crystal display element comprising two electrode substrates, each of which is a transparent substrate, an electrode having the desired patterns formed on the inner surface of at least one of said transparent substrates, and a liquid crystal molecule orientation controlling film formed on

In a liquid crystal display element comprising two electrode substrates, each of which is a transparent substrate, an electrode having the desired patterns formed on the inner surface of at least one of said transparent substrates, and a liquid crystal molecule orientation controlling film formed on the inner surface of said electrode, said two electrode substrates being placed in parallel with a certain distance therebetween and sealed therearound by a sealant, and a nematic liquid crystal being enclosed in the space thus produced, the improvement which comprises using as the liquid crystal molecule orientation controlling film a film of a polymer having imide rings and as the sealant a calcined product of low-melting point glass obtained by adding 1 to 5 parts by weight of either SiO2 or Al2O3 or both of SiO2 and Al2O3 to 100 parts by weight of a base composition comprising: B2O3－7.5-14.5% by weight, PbO －71.5-81.2% by weight, ZnO －0-14.0% by weight, CuO －0-3.0% by weight, and Bi2O3－1.5-3.0% by weight.