39 results about "Ferroelectric liquid crystal display" patented technology

A liquid crystal display cell, and a fabricating method thereof, that incorporates a light-cured monomer in a ferroelectric liquid crystal. By injecting the light-cured monomer / ferroelectric liquid crystal between substrate while in a nematic phase or isotropic phase, by performing DC voltage treatments as the liquid crystal temperature decreases, and by performing a light irradiation treatment, a stable, aligned ferroelectric liquid crystal cell is produced. Such a ferroelectric liquid crystal cell can reduce flicker and can be realigned after a physical shock.

A ferroelectric liquid crystal display, comprising an upper substrate and a lower substrate, the configurations of which are separated by a predetermined distance; face-to-face electrode layers respectively formed on the upper substrate and the lower substrate; electrode layers respectively formed on the electrode layers orientation layers, and the corresponding orientation layers are processed by rubbing along a first rubbing direction and rubbing along a second rubbing direction, the first rubbing direction and the second rubbing direction intersect at a predetermined angle; Shape structure of the liquid crystal layer of ferroelectric liquid crystal. Due to the ferroelectric liquid crystal display and its manufacturing method, the ferroelectric liquid crystal having a bookshelf structure can be stably distorted through orientation treatment, thereby preventing afterimage phenomenon, and obtaining lower threshold voltage and bistable state.

A ferroelectric liquid crystal display having alignment films with different surface polarities. The alignment films induce an internal electric field through the liquid crystal. Because of the induced internal electric field, initial liquid crystal alignment, and subsequent liquid crystal alignments, can be performed without an externally applied electric field.

A ferroelectric liquid crystal display and a fabricating method thereof that is capable of improving light efficiency by preventing light efficiency deterioration due to the low voltage holding ratio of a ferroelectric liquid crystal. The ferroelectric liquid crystal display supplies red, green and blue data signals to each of the liquid crystal cells and is in a stand-by state during a responding period of liquid crystal, and then sequentially generates red, green and blue lights corresponding to each of the red, green and blue data signals. With this configuration, deterioration in brightness due to the low voltage holding ratio of the ferroelectric liquid crystal can be prevented and the light efficiency can be increased.

A ferroelectric liquid crystal display and a fabricating method thereof that is capable of maintaining a stable alignment state against external temperature variation and external impact. In the method and apparatus, a ferroelectric liquid crystal containing a small amount of light-hardening polymer is injected between upper and lower substrates provided with alignment film. An ultraviolet ray is irradiated thereon to form a polymer network. The ultraviolet ray has a light intensity range of about 1 to about 5 mW / cm<2>, and has a light energy range of about 240 to about 1200 mJ / cm<2>.

An aligning method of a ferroelectric liquid crystal display includes; disposing a first mask and a second mask, each of which has opening regions and blocking regions arranged in alternating fashion in vertical direction and horizontal direction corresponding to liquid crystal cells of the liquid crystal display; and injecting a ferroelectric liquid crystal material within the liquid crystal panel.

The invention relates to the field of optoelectronics, and may be used in devices and of visualization, displaying, storage and processing of information, in particular in projection displays, etc. Video projector consists of a liquid crystal micro display based on structure FLCoS, and an optical unit of reading the information formed in the structure FLCoS, containing a light source and projection optics, optically coupled to the structure FLCoS, and a screen, onto which the information is projected. As the electro-optical material the low-voltage ferroelectric liquid crystal (FLC) with compensated helix providing physically realizable, continuous, halftone, hysteresis-free modulation characteristic is used in the structure FLCoS. Lasers of red, green and blue radiation serve as the sources of light in three different color channels RGB. To destroy the ability of their radiation to the interference, a cell with FLC is inserted into the optical unit of information reading that implements fast electrically controlled spatial phase light modulation with a depth of ≧π, and in order to form on the screen the information blocks with a capacity of 108 . . . 109 pixels, with different geometric configurations a two-dimensional scanner is input, which optically coupled to the optical unit of information reading and to the screen. The technical result is an increase of frame rate, expanding the color gamut, brightness enhancement, noise reduction.

A method for aligning ferroelectric liquid crystal materials in a half-V switch mode when an external electric field is applied, and a driving method and device for a ferroelectric liquid crystal display using the method have high response speed characteristics and wide viewing angle characteristics. This liquid crystal material has a small capacitance value C, and is driven to display pictures according to a dual frequency column inversion driving method operating at 120 Hz.

The present invention discloses a reflective type ferroelectric liquid crystal display and a driving method thereof. The reflective type ferroelectric liquid crystal display comprises a display panel which is disposed between a polarization beam splitter and a mirror to satisfy a quarter plate condition, and in which a liquid crystal layer formed between electrode layers is filled with half-V type ferroelectric liquid crystal having a bookshelf structure, the electrode layers being disposed between substrates to be orthogonal and opposite to each other; and a compensation panel which is disposed between the display panel and the polarization beam splitter to satisfy a half plate condition, and in which a liquid crystal layer formed between electrode layers is filled with half-V type ferroelectric liquid crystal having a bookshelf structure, the electrode layers being disposed between substrates to be opposite to each other. Therefore, the light loss can be reduced, and thus the gray scale display can be improved.

A liquid crystal compound represented by the following formula is provided to enhance the contrast of a liquid crystal device using ferroeloctric liquid crystal:R1 is an alkyl group having 4 to 6 carbon atoms. R2 is an alkyl group having 6 to 18 carbon atoms or an alkoxy group having 6 to 18 carbon atoms. X1 and X2 are each independently hydrogen ox fluorine.

The present invention discloses a reflective type ferroelectric liquid crystal display and a driving method thereof. The reflective type ferroelectric liquid crystal display comprises a display panel which is disposed between a polarization beam splitter and a mirror to satisfy a quarter plate condition, and in which a liquid crystal layer formed between electrode layers is filled with half-V type ferroelectric liquid crystal having a bookshelf structure, the electrode layers being disposed between substrates to be orthogonal and opposite to each other; and a compensation panel which is disposed between the display panel and the polarization beam splitter to satisfy a half plate condition, and in which a liquid crystal layer formed between electrode layers is filled with half-V type ferroelectric liquid crystal having a bookshelf structure, the electrode layers being disposed between substrates to be opposite to each other. Therefore, the light loss can be reduced, and thus the gray scale display can be improved.