Abstract: Disclosed is a liquid crystal display (LCD) and method for driving the same, in which a rapid response characteristic of the liquid crystal is secured employing a charge-sharing driving mode.

Abstract: The present invention relates to a rubbing machine with realigning functions for use in an LCD manufacturing process and also to a rubbing method which is conducted using the same. The rubbing machine is used to determine the direction of alignment by rubbing an alignment film coated on a substrate disposed on a stage. In this rubbing machine, an realigning section for realigning a rubbing cloth is disposed on the portion of a rubbing roll in such a manner that the realigning section be in contact with the rubbing cloth.

Abstract: Disclosed is a method for crystallizing a single crystalline Si film on an amorphous substrate, such as a glass substrate or a plastic substrate. The method includes the steps of selectively irradiating the laser beam onto a pixel section TFT forming region and a peripheral circuit TFT forming region of the amorphous silicon film through primary and secondary laser irradiation processes, thereby forming a poly-silicon film and irradiating the laser beam onto one of grains formed in the poly-silicon film through a third laser irradiation process, thereby forming a single crystalline silicon region having a desired size on a predetermined portion of the amorphous silicon film. The amorphous silicon film is locally crystallized into the single crystalline silicon film so that characteristics of TFTs for the pixel section and the peripheral circuit are improved while ensuring high uniformity.

Abstract: Disclosed are a RF signal detecting apparatus of a liquid crystal display and a detecting method using the same.

Abstract: A method for forming a polycrystalline silicon thin film transistor. The method includes the steps of: forming a polycrystalline silicon layer including multiple protrusions by crystallizing the amorphous silicon layer according to a crystallization method in which the multiple protrusions are formed due to collision between crystal grains; patterning the polycrystalline silicon layer in an active pattern which includes only two protrusions of the multiple protrusions, which are apart from each other and located at both sides of a gate electrode-forming area; applying a barrier layer on the patterned polycrystalline silicon layer while partially covering the two protrusions; and forming a source electrode and a drain electrode at the protrusions of the polycrystalline silicon layer formed at both sides of the gate electrode-forming area by ion-implanting dopants into a resultant lamination.

Abstract: Disclosed is a vertical alignment mode liquid crystal display. The liquid crystal display comprises a pixel electrode formed on a lower substrate, a counter electrode formed on an upper substrate, and a vertical alignment layer forcing liquid crystal molecules in a liquid crystal layer to be aligned in a vertical direction, wherein the counter electrode is parallelly faced to the pixel electrode while being displaced from the pixel electrode at an interval along a surface of the lower substrate or the upper substrate. Therefore, the liquid crystal display has various properties of a high contrast, a high transmittance resulting from constraint of a disclination, and a fast response speed resulting from identical alignment of the liquid crystal molecules.

Abstract: Disclosed is a method for forming a polycrystalline silicon film by crystallizing an amorphous silicon film. A mask has first to third shot regions having the same length. The first to third shot regions have transmission sections and non-transmission sections, which are alternately aligned. The transmission sections of the first shot region are positioned corresponding to the non-transmission sections of the second shot region, the non-transmission sections of the first shot region are positioned corresponding to the transmission sections of the second shot region, and the transmission sections of the third shot region are aligned corresponding to center portions of the transmission sections of the first and second shot regions. Primary to nth laser irradiation processes are performed with respect to the glass substrate, thereby crystallizing the amorphous silicon film into the polycrystalline silicon film.

Abstract: A liquid crystal display capable of testing defects of wiring in panel comprising a TFT array unit including a plurality of gate lines and data lines formed in a matrix shape, having TFT transistors at the intersection of each of the gate lines and the data lines; a data pad unit commonly connected to the plurality of data lines, for receiving signals for driving the data lines; and a wiring unit for testing defects in the data line, being connected between the data pad unit and the data line, and testing for disconnection and short anomalies of the data line.

Abstract: A semi-transmission type liquid crystal display device has a liquid crystal layer between lower and upper substrates, each having a reflection electrode and a lower orientation film. The upper substrate has a color filter and an upper orientation film. Upper and lower phase films are positioned on the upper and lower substrates, respectively, to transform polarized light from linear to circular. Upper and lower polarization plates are provided on the upper and lower phase films, respectively. The liquid crystal layer phase delay d? n is 0.24–0.27 ?m. The upper phase film has a function of ?/4 phase compensation and an optical axis of 140° to 146°. The upper orientation film has an orientation angle of 40°–50°, and the lower orientation film has an orientation angle of ?10° to ?20° relative to a horizontal line. The upper polarization plate has a transmission axis angle of 104°–122.5°.

Abstract: A thin film transistor liquid crystal display is capable of improving a screen quality by preventing generation of residual ions in pixels. The disclosed comprises a substrate; a plurality of gate bus lines arranged to a predetermined direction on the substrate, having a gate pad unit for applying driving signals; a plurality of data bus lines cross-arranged with the gate bus lines to define a unit pixel, having a data pad unit for applying graphic signals; a thin film transistor arranged at the intersection of the data bus lines and gate bus lines; a pixel electrode arranged in the unit pixel region to be in contact with the thin film transistor; and a plurality of common bus lines arranged parallel with the gate bus lines, having a common pad unit for regularly applying common signals to pixels; and wherein a shielding line is arranged to be in contact with the common bus line and parallel with the data bus line on the outer side of pixels adjacent to the common pad unit and gate pad unit.

Abstract: Disclosed herein is a vertical alignment liquid crystal display device with high-speed response.

Abstract: The present invention relates to a liquid crystal display, comprising a lower alignment film formed on a lower substrate; an upper alignment film formed on an upper substrates; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate and a polarizer adhered on the phase compensation film wherein the lower alignment film has an alignment angle of 10-20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (d?n) of 0.24-0.27 ?m, the phase compensation film has a phase compensation function of ?/4 and also has an optical axis making 140-146° with a horizontal line and the polarizer has an absorption axis making 120 to 122.5° with a horizontal line.

Abstract: Disclosed is an LCD having liquid crystal molecules that lie at a predetermined direction around a valley formed in an upper substrate of the LCD in order to prevent creation of an unadjustable disclination line. The LCD comprises an upper substrate, a lower substrate and a plurality of slits formed in a pixel region of the lower substrate. Each of the slits has a minute distance to the adjacent one of the slits. A valley is formed in a color filter of the upper substrate covered with a transparent electrode, and has a predetermined angle with respect to the slits. Vertical alignment material is formed in opposite faces of the upper and lower substrates. A liquid crystal layer is injected between the upper and lower substrates. Polarizers are arranged in outer faces of the upper and lower substrates, and have transmission axes, which are perpendicular to each other.

Abstract: Disclosed is a backlight unit structure for an LCD (Liquid Crystal Display). The backlight unit structure comprises: a lamp disposed under a display panel; and a reflection plate rotatably disposed around the lamp and having an opening through which light can be concentrated on the display panel. The blink backlight having the reflection plate is applied to backlight unit structure, so that it is possible to improve a response time, to enhance an image quality of the moving picture similarly to the existing CRT, and to obtain a high luminance as well.

Abstract: Disclosed is a method for fabricating a reflective-type liquid crystal display device, capable of uniformly forming embossings causing a uniform reflective angle of incident light over the whole area of a substrate. The method includes the steps of coating a negative type organic insulation layer, soft-baking the organic insulation layer, performing a primary exposure process for the organic insulation layer, performing a secondary exposure process by using an exposure mask having openings, and curing the organic insulation layer through a post bake process and performing a thermal process with respect to a non-exposed part of the organic insulation layer, thereby forming embossings. The primary exposure process is carried out by applying an energy less than an optimum energy, and the secondary exposure process is carried out by applying the optimum energy.

Abstract: The present invention relates to a method for forming post spacers in a liquid crystal display, which enables cell gap to be uniform by means of a half-tone mask. The method comprises the steps of: defining a active region and a dummy region in a substrate; forming a black matrix on the substrate at the outside of the active region; selectively forming a RGB resin film on the active region while selectively forming a RGB resin film on the dummy region; forming a protective film on the resulting structure; forming a photosensitive resin film on the protective film; forming a half-tone mask pattern on the photosensitive resin film; and selectively etching the photosensitive resin film using the half-tone mask pattern so as to form the post spacers having a different height.

Abstract: Disclosed herein is a vertical alignment liquid crystal display device with high-speed response.

Abstract: The present invention provides a liquid crystal display having improved screen quality by preventing abnormal light leakage due to ions in a pixel. The present invention comprises: an array substrate whereon a plurality of gate lines and data lines are arranged to be perpendicular to each other, a TFT is formed at the intersection of the lines and a pixel electrode is formed in a pixel region defined by the lines; a color filter substrate combined with the array substrate, whereon a color filter is formed corresponding to the pixel region, a block matrix is formed corresponding to the interface of pixels and a counter electrode is formed on the whole surface including the color filter and the black matrix; and a liquid crystal layer comprising a plurality of liquid crystal molecules interposed between the array substrate and the color filter substrate, wherein the pixel electrode has a rectangular shape and a plurality of acute angle Tips are formed on the edges thereof.

Abstract: A color polymer dispersed liquid crystal display includes a lower substrate, an upper substrate, color liquid crystal-polymer films, and two transparent liquid crystal driving electrodes, among others. The color liquid crystal-polymer films are formed by foaming polymer films mixed with red, green and blue pigments to form porous films of red, green, and blue colors and then dropping and injecting liquid crystal into droplets of the porous films under vacuum condition. One of the two transparent liquid crystal driving electrodes is disposed between the lower substrate and the PDLC films, and the other is disposed between the PDLC films and the upper substrate. The changes in properties of the PDLC films, which may be caused by unstable phase separation in a conventional phase separation process, are reduced, and the colors are improved.

Abstract: A VVA mode LCD has a liquid crystal (LC) layer of a negative dielectric anisotropy between lower and upper substrates. A pixel electrode is formed on the lower substrate. A color resin layer is formed on the upper substrate and has a V-shaped valley and jagged valleys, which are perpendicular to and shallower in depth than the V-shaped valley. A counter electrode is formed on the color resin layer and has a V-shaped valley and jagged valleys perpendicular to the V-shaped valleys. A first vertical orientation layer is formed between the pixel electrode and the LC layer. A second vertical orientation layer is formed between the counter electrode and the LC layer. First and second polarizers are attached to the outer and inner faces of the upper and lower substrates, respectively. The polarization axis of each intersects. The jagged valleys are provided to the V-shaped valleys via halftone exposure.