Abstract: A trans-reflective type In-Plane Switching (IPS)-LCD device capable of implementing a single gap and a wide viewing angle, and minimizing an occurrence area of disclination at an interface between a transmission region and a reflection region, and a method for designing the same. First and second alignment layers have characteristics to allow LC in a transmission region can be aligned in the same direction as a transmission axis of a lower polarizer. A third alignment layer is aligned so that the LC in the reflection region can be twisted from a lower side to an upper side with a predetermined twisted angle (?). Here, the twisted angle (?) of the LC in the reflection region, and an angle (?) between an alignment direction of an uppermost LC in the reflection region and the transmission axis of the upper polarizer are set so that optical reflectivity in the reflection region is ‘0’ when the LC is not driven.

Abstract: An in-plane switching mode liquid crystal display device includes upper and lower substrates, first and second ferroelectric liquid crystal layers, a nematic system crystal layer, and first and second electrodes. The electrodes and liquid crystal layers are located between the substrates, with the nematic liquid crystal layer between the ferroelectric liquid crystal layers. The ferroelectric liquid crystal layers have different spontaneous polarization directions. An electric field is applied to the liquid crystal layers using the electrodes. The ferroelectric liquid crystal layers react to different electric field to conduct an in-plane driving of liquid crystal molecules in the nematic liquid crystal layer.

Abstract: A transflective type LCD device including a unit pixel region divided into reflective and transmitting parts includes first and second substrates facing each other, a pixel electrode in the pixel region of first substrate, a reflective sheet in the reflective part of first substrate, a common electrode on the second substrate, at least one first open pattern for forming multi-domains, and the first open pattern in at least one of the pixel and common electrodes, and a plurality of second open patterns for inducing a fringe field, and the second open patterns in the reflective part of at least one of the pixel and common electrodes.

Abstract: An electrophoretic display includes a first substrate having a thin film transistor and a pixel electrode, a second substrate disposed to face the first substrate, an electrophoretic membrane interposed between the first and second substrates, and an optical member between the second substrate and the electrophoretic membrane, the optical member being configured to reflect light incident thereon, and a surface of the electrophoretic membrane facing the optical member being conformal to a shape of the optical member.

Abstract: A liquid crystal display device includes first and second substrates facing each other and including transmissive and reflective regions, a first electric field distorting unit disposed in the transmissive region on one of the first and second substrates and having a first bent shape, a second electric field distorting unit disposed in the reflective region on one of the first and second substrates and having a second bent shape, and a liquid crystal layer interposed between the first and second substrates, wherein the first bent shape has a first angle with respect to a first vertical direction of a first symmetrical axis of the first bent shape and the second bent shape has a second angle with respect to a second vertical direction of a second symmetrical axis of the second bent shape, and the first angle is different from the second angle.

Abstract: An in-plane switching mode liquid crystal display device includes upper and lower substrates, first and second ferroelectric liquid crystal layers, a nematic system crystal layer, and first and second electrodes. The electrodes and liquid crystal layers are located between the substrates, with the nematic liquid crystal layer between the ferroelectric liquid crystal layers. The ferroelectric liquid crystal layers have different spontaneous polarization directions. An electric field is applied to the liquid crystal layers using the electrodes. The ferroelectric liquid crystal layers react to different electric field to conduct an in-plane driving of liquid crystal molecules in the nematic liquid crystal layer.

Abstract: A liquid crystal display device includes: a first substrate including a transmission part and a reflection part; a common electrode disposed on the transmission part and the reflection part; a plurality of first pixel electrodes disposed on the transmission part and having a first electrode direction; a plurality of second pixel electrodes disposed on the reflection part and having a second electrode direction, the first electrode direction and the second electrode direction creating an acute angle; a second substrate facing the first substrate; and a liquid crystal layer interposed between the first and second substrates.

Abstract: An in-plane switching mode liquid crystal display device includes upper and lower substrates, first and second ferroelectric liquid crystal layers, a nematic system crystal layer, and first and second electrodes. The electrodes and liquid crystal layers are located between the substrates, with the nematic liquid crystal layer between the ferroelectric liquid crystal layers. The ferroelectric liquid crystal layers have different spontaneous polarization directions. An electric field is applied to the liquid crystal layers using the electrodes. The ferroelectric liquid crystal layers react to different electric field to conduct an in-plane driving of liquid crystal molecules in the nematic liquid crystal layer.

Abstract: A trans-reflective type In-Plane Switching (IPS)-LCD device capable of implementing a single gap and a wide viewing angle, and minimizing an occurrence area of disclination at an interface between a transmission region and a reflection region, and a method for designing the same. First and second alignment layers have characteristics to allow LC in a transmission region can be aligned in the same direction as a transmission axis of a lower polarizer. A third alignment layer is aligned so that the LC in the reflection region can be twisted from a lower side to an upper side with a predetermined twisted angle (?). Here, the twisted angle (?) of the LC in the reflection region, and an angle (?) between an alignment direction of an uppermost LC in the reflection region and the transmission axis of the upper polarizer are set so that optical reflectivity in the reflection region is ‘0’ when the LC is not driven.

Abstract: A liquid crystal display includes: first and second substrates with a transmissive region and a reflective region defined thereon; a reflection layer formed at the reflective region of the first substrate; a liquid crystal layer formed between the first and second substrates; a common electrode formed on the second substrate; an alignment layer formed on the second substrate and rubbed in one direction; a pixel electrode formed on the first substrate to form an electric field together with the common electrode to drive the liquid crystal layer, and having at least one electric field controller to control the direction of the electric field; and a vertical alignment layer formed on the first substrate.

Abstract: An LCD device adapted to implement a higher aperture ratio and to reduce its power consumption is disclosed. The LCD device includes: gate lines and data lines crossing each other to define pixel regions; a thin film transistor formed in each intersecting region of the gate lines and the data lines; a reflection electrode of plane shape, electrically connected to a drain electrode of the thin film transistor; a pixel electrode disposed in each of the pixel regions; and a common electrode having a slit structure, over the pixel electrode and the reflection electrode.

Abstract: A liquid crystal display device having first and second substrates that face each other, a liquid crystal layer interposed between the first and second substrates, a thin film transistor (TFT) formed on the first substrate, and a pixel electrode electrically connected with the TFT and including a reflective portion having a reflective electrode and a transmissive portion having a transmissive electrode. Furthermore, the reflective electrode includes a conductive polymer material.

Abstract: A liquid crystal display using a compensating film includes a liquid crystal panel having upper and lower substrates, and a liquid crystal layer interposed between; a first compensating film formed over an inner surface of at least one of the upper substrate lower substrates; a second compensating film formed over an outer surface of at least one of the upper and lower substrates; and first and second polarizing plates attached over the second compensating film and on an outer surface of the other one of the upper lower substrates such that a first optical transmission axis of the first polarizing plate is perpendicular to a second optical transmission axis of the second polarizing plate. The compensating film is formed inside the liquid crystal panel, thereby preventing light leakage at a viewing angle and improving the viewing angle characteristics.

Abstract: A transflective liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel electrode. The first substrate has a thin film transistor and the second substrate has a color filter and faces the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The pixel electrode is disposed above the first substrate and electrically connected to the thin film transistor. The transflective liquid crystal display device further includes a pixel region. The pixel region is divided into a transmit part and a reflective part, and the reflective part includes a first region and a second region. The pixel electrode extends to the transmit part and only the second region of the reflective part.

Abstract: A liquid crystal display device includes first and second substrates facing each other and including transmissive and reflective regions, a first electric field distorting unit disposed in the transmissive region on one of the first and second substrates and having a first bent shape, a second electric field distorting unit disposed in the reflective region on one of the first and second substrates and having a second bent shape, and a liquid crystal layer interposed between the first and second substrates, wherein the first bent shape has a first angle with respect to a first vertical direction of a first symmetrical axis of the first bent shape and the second bent shape has a second angle with respect to a second vertical direction of a second symmetrical axis of the second bent shape, and the first angle is different from the second angle.

Abstract: A liquid crystal display device includes first and second substrates facing each other and spaced apart by a uniform cell gap, an array element having a switching element on the first substrate and a first transparent electrode connected to the switching element, a first patterned spacer disposed on the array element having a first height less than the uniform cell gap, a second transparent electrode under the second substrate, a second patterned spacer disposed beneath the second transparent electrode, the second patterned spacer having a second height less than the uniform cell gap and connected to the first patterned spacer, a first alignment layer covering the first patterned spacer, a second alignment layer covering the second patterned spacer, and a liquid crystal material layer interposed between the first and second alignment layers, wherein the first and second spacers are connected to each other and a summation of the first and second heights of the first and second patterned spacers is equivalent t

Abstract: A liquid crystal display panel implementing a bistable liquid crystal and fabricating the same is disclosed in the present invention. Specifically, a method of fabricating a liquid crystal display panel having first and second substrates, the method includes forming a first electrode on the first substrate, forming a second electrode on the second substrate, assembling the first and second substrates, forming a bistable twist nematic liquid crystal layer between the first and second substrates, wherein the bistable twist nematic liquid crystal layer having a monomer, aligning the bistable twist nematic liquid crystal layer by applying electric fields, and forming polymer networks by exposing the bistable twist nematic liquid crystal layer to light.

Abstract: A method of driving a liquid crystal display that is adaptive for improving a picture quality. In the method, a clock pulse is applied to a gate driver. First to third gate output enable signals are applied to the gate driver. A scanning pulse is applied to two gate lines during one period of the clock pulse.

Abstract: An optically compensated birefringence mode liquid crystal display device includes first and second substrates facing and spaced apart from each other, a liquid crystal material layer between the first and second substrates, the liquid crystal material layer having a splay state when a voltage is not applied and having a bend state when a transition voltage is applied, a first compensation film on an outer surface of the first substrate, a first polarizing plate on the first compensation film, a second compensation film on an outer surface of the second substrate, and a second polarizing plate on the second compensation film, wherein the liquid crystal material layer in the splay state has a first retardation value (R1) satisfying according to: 1.35<R1/?<1.75 the liquid crystal material layer in the bend state has a second retardation value (R2) according to: 0.5<R2/?<0.7 when a white voltage for a white image is applied, and a third retardation value (R3) according to: 0.1<R3/?<0.

Abstract: A LCD device and method that improve contrast ratio, reduce grayscale inversion and light leakage without a retardation film. The LCD device includes: a first substrate and a second substrate facing the first substrate, the first and second substrates including a pixel region; a first electrode on an inner surface of the first substrate in the pixel region; a first alignment layer over the first electrode, the first alignment layer including a mesogenic material; a second electrode on an inner surface of the second substrate; a second alignment layer over the second electrode, the second alignment layer including a same material as the first alignment layer; a liquid crystal layer interposed between the first and second alignment layers; and first and second polarizers on outer surfaces of the first and second substrates, respectively, wherein the first and second alignment layers compensate retardation of the liquid crystal layer.