摘要:
A liquid crystal device comprising: a pair of substrates having an electrode arrangement thereon; an orientation control means provided on at least one of said substrates; and a ferroelectric or antiferroelectric liquid crystal layer interposed between said substrates, said liquid crystal layer being uniaxially oriented by virtue of said orientation control means, wherein means for suppressing an orientation control effect of said orientation control means with respect to said liquid crystal layer is provided between said liquid crystal layer and said orientation control means.
摘要:
Technology to reduce the manufacturing cost of a manufacturing process of a light emitting device is provided. The manufacturing cost of a device using a light emitting element can be reduced by using a multilayout process for forming a plurality of light emitting devices from a large-sized substrate. In particular, an existing line for manufacturing liquid crystal cells can be diverted to a process of encapsulating light emitting elements, which can greatly reduce the manufacturing cost including the investment in plant and equipment.
摘要:
A liquid crystal device comprising: a pair of substrates having an electrode arrangement thereon; an orientation control means provided on at least one of said substrates; and a ferroelectric or antiferroelectric liquid crystal layer interposed between said substrates, said liquid crystal layer being uniaxially oriented by virtue of said orientation control means, wherein means for suppressing an orientation control effect of said orientation control means with respect to said liquid crystal layer is provided between said liquid crystal layer and said orientation control means.
摘要:
There is provided an active matrix liquid crystal display having high reliability with improved yield of production. In an active matrix liquid crystal display in which peripheral driving circuits are in contact with a liquid crystal material, spacers are dispersed in peripheral driving circuit regions in a density lower than that in a pixel region to reduce damage to the peripheral driving circuits and to improve production yield and reliability of products.
摘要:
A liquid crystal display device is characterized by comprising first and second substrates on a surface of which electrodes are formed, a liquid crystal material with ferroelectricity or antiferroelectricity interposed between the first and second electrodes, and an orientation film and disposed between the electrode or electrodes formed on the surface of said first and/or second substrate whose surface has been subjected to a process which gives optically uniaxial orientation to the liquid crystal material, wherein said orientation film has a pretilt angle of 1.6 to 3.1 degree with respect to a nematic liquid crystal. Further, a value of a polar term of surface tension on the surface of the orientation film ranges from 11 to 15 dyne/cm.
摘要:
A liquid crystal display using a hydrophobic material as the material of resinous columns to orient the molecules of the liquid crystal parallel to the substrates. A hydrophilic material can also be used as the material of resinous columns to orient the molecules of the liquid crystal vertical to the substrates. The liquid crystal molecules are oriented horizontally by making the surface tension of the orientation film greater than the surface tension of the resinous columns. The liquid crystal molecules are oriented vertically by making the surface tension of the orientation film smaller than the surface tension of the resinous columns. A mixture of a liquid crystal material and an uncured resin is placed in a liquid crystal cell. The uncured resin is precipitated (deposited) out of the mixture. The molecules of the liquid crystal material are oriented. Then, the uncured resin is cured. Thereafter, an aging step for reorienting the molecules of the liquid crystal material is carried out. This prevents disturbance of the orientation around the resinous columns and leads to an improvement in the voltage holding ratio.
摘要:
A liquid crystal electro-optical device comprising a ferroelectric liquid crystal material having spontaneous polarization. The liquid crystal material is sandwiched between substrates having TFTs thereon. When the liquid crystal material is driven with the TFTs, the TFTs apply a voltage in different polarities to switch the material between first and second states. This voltage for switching is required to be larger than the voltage that is necessary to maintain the present state of the liquid crystal material. To facilitate switching, the threshold value for inversion of the ferroelectric liquid crystal material preferably has a small value of 0.1 to 4 V. Preferably, the liquid crystal material shows uniform orientation or multi-microdomain orientation. There is also disclosed a liquid crystal electro-optical device comprising a liquid crystal material having spontaneous polarization. The liquid crystal material is sandwiched between transparent substrates having electrodes thereon. An orienting means is provided on one of the substrates surfaces which are in contact with the liquid crystal material to orient the liquid crystal material along one axis. When no voltage is applied from the electrodes to the liquid crystal material, the spontaneous polarization shows splay orientation between the substrates. When a voltage is applied, the spontaneous polarization shows uniform orientation.
摘要:
A high-performance liquid crystal display includes a pair of substrates and a liquid crystal cell containing a ferroelectric or antiferroelectric liquid crystal. TFTs or a ferroelectric thin film is formed on one substrate. A given amount of electric charge is supplied into the liquid crystal inside the pixel electrodes. After the supply, the charge is retained under a high-resistivity condition. The ratio of the area of parts of the liquid crystal material in a first state to the area of parts in a second state is controlled by the amount of electric charge supplied, thus achieving a wide gray scale. The fast response and the wide viewing angle intrinsic in the liquid crystal are fully exploited. Further, a liquid crystal display using a liquid crystal material consisting either of a liquid crystal material showing ferroelectricity or anfiferroelectricity or of a high polymer in which such a liquid crystal material is dispersed is disclosed. The liquid crystal material is so selected that it shows appropriate spontaneous polarization. The time for which an electric field is applied to the liquid crystal material is controlled to obtain a gray scale.
摘要:
A liquid crystal electro-optical device comprises a pair of substrates, at least one of them being light-transmitting, electrodes provided on said substrates, an electro-optical modulating layer being sandwiched by said pair of substrates, and a black coating formed between the electro-optical modulating layer and one of the substrates. The electro-optical modulating layer comprises a dichroic dye and a liquid crystal material embedded in a transparent material which is cured except in a portion situated under the black coating.
摘要:
A liquid crystal electro-optical device comprising a pair of substrates at least one of them is light-transmitting, electrodes being provided on said substrates, and an electro-optical modulating layer being supported by said pair of substrates, provided that said electro-optical modulating layer comprises an anti-ferroelectric liquid crystal material or a smectic liquid crystal material which exhibits anti-ferroelectricity, and a transparent material.