Abstract: An LCD according to the present invention includes lower and upper panels facing each other and a liquid crystal layer interposed therebetween. The upper panel includes a black matrix formed on an inner surface of an insulating substrate, having openings corresponding to pixel areas, and blocking the light leakage between the pixel areas, a plurality of red, green, and blue color filter sequentially arranged in the pixel regions, a flat layer formed on the red, green and blue color filters, and a common electrode formed on the flat layer, made of transparent conductive material such as ITO (indium tin oxide) or IZO (indium zinc oxide), and supplied with a predetermined voltage for driving the liquid molecules in cooperation with the pixel electrodes. In addition, a light diffraction layer having micro structure of slit pattern or diffraction lattice is formed between the black matrix and the red, green, or blue color filters.

Abstract: An LCD according to an embodiment of the present invention includes a liquid crystal panel assembly including two panels facing each other and a liquid crystal layer interposed between the two panels and having positive dielectric anisotropy. A pair of polarization films are attached to the outer surfaces of the liquid crystal panel assembly, respectively. A positive or negative a-plate compensation film having reverse wavelength dispersion that ¥Än increases as the light wavelength increases and a negative hybrid c-plate compensation film are inserted between the liquid crystal panel assembly and each of the polarization films.

Abstract: A thin film transistor array panel is provided, which includes; an insulating substrate; a plurality of gate lines formed on the insulating substrate; a plurality of data lines formed on the insulating substrate, insulated from the gate lines, and intersecting the gate lines; a plurality of storage electrode lines formed on the insulating substrate, insulated from the data lines, and intersecting the data lines; a plurality of pixel electrodes provided on the respective pixel areas defined by the intersections of the gate lines and the data lines, each pixel electrode having a cutout; a plurality of direction control electrodes provided on the respective pixel areas defined by the intersections of the gate lines and the data lines; a first thin film transistor connected to a relevant one of the gate lines, a relevant one of the data lines and a relevant one of the gate lines, a relevant one of the data lines and a relevant one of the pixel electrodes; a second thin film transistor connected to a previous one

Abstract: A liquid crystal display has, a plurality of pixel including a switching element, a plurality of gate lines extending transversally, a plurality of data lines extending longitudinally, a first storage electrode line extending transversally, a second storage electrode line extending longitudinally, a third storage electrode line connecting two of the adjacent second storage electrode line, a repair assistant formed in an area that the data line crosses over the third storage electrode line. The liquid crystal display can be repaired with good quality by shortening the repair path.

Abstract: An array substrate includes a gate line, a data line, a switching device, a transmissive electrode, a reflective electrode and a compensating wiring. A pixel region includes first and second regions. The switching device is connected to the gate line and the data line. The transmissive electrode is connected to the switching device. The transmissive electrode is formed in the first region. The reflective electrode is insulated from the transmissive electrode. The reflective electrode is formed in the second region that is adjacent to the first region. The compensating wiring is connected to the switching device. The compensating wiring faces the reflective electrode in the second region with an insulation layer interposed therebetween. Thus, both of a reflectivity of the reflective electrode and a transmissivity of the transmissive electrode are enhanced simultaneously, while the liquid crystal display apparatus maintains a uniform cell gap.

Abstract: A transflective liquid crystal display and a method of manufacturing the same. The liquid crystal display includes a pair of substrates in which a plurality of pixels having a reflection region and a transmission region are defined, a color filter, formed on one of the substrates, having a stepped surface, a phase difference layer planarizing the stepped surface of the color filter and having a different phase differences for the reflection region and the transmission region, and a liquid crystal layer interposed between the pair of substrates.

Abstract: A thin film transistor array panel is provided, which includes: a pair of first and second gate lines; a data line intersecting the gate lines in an insulating manner; a storage electrode line supplied with a common voltage; a pixel electrode formed in a pixel area defined by the intersections of the first and the second gate lines and the data line and including a plurality of subareas partitioned by cutouts; a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts; a first thin film transistor connected to the pixel electrode, the first signal line, and the third signal line; a second thin film transistor connected to the pixel electrode, the second signal line, and the third signal line; and a third thin film transistor connected to the direction control electrode, the second signal line, and the fourth signal line.

Abstract: An organic light emitting device includes first and second sub pixels. The first sub pixel includes at least one first sub pixel that emits a light of original colors, and the second sub pixel includes at least one second sub pixel that emits a light of complementary colors, wherein a specific sub pixel is selected from the first and second sub pixels and a light emitting efficiency of a remaining sub pixels are adjusted according to a light emitting efficiency of a selected sub pixel from among the first and second sub pixels, so that the OLED displays a white color when each sub pixel emits a maximum amount of light.

Abstract: A data processor receives sets of input image data having respective input grays and outputs sets of output image data having respective output grays. Each set of output image data corresponds to one of the plurality of sets of input image data and have more image data than each set of the input image data. A data driver supplies the pixels with data voltages corresponding to the output image data supplied from the data processor. A set of output grays corresponding to a set of input grays are selected from sets of grays, each set of grays giving an average front transmittance substantially equal to an average front transmittance of the set of input grays. The sets of output grays generate the closest average lateral gamma curve generated by the sets of grays relative to an average front gamma curve generated by the input grays.

Abstract: A thin film transistor array panel is provided, which includes: an insulating substrate; a first signal wire formed on the insulating substrate; a second signal wire formed on the insulating substrate and intersecting the first signal wire in an insulating manner; first and second pixel electrodes formed in a pixel area defined by the intersections of the first and the second signal wires and including a plurality of subareas partitioned by cutouts; a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts; and a first thin film transistor connected to the direction control electrode, the first signal wire, and the second signal wire.

Abstract: A method of converting image signals for a display device including six-color subpixels is provided, which includes: classifying three-color input image signals into maximum, middle, and minimum; decomposing the classified signals into six-color components; determining a maximum among the six-color components; calculating a scaling factor; and extracting six-color output signals.

Abstract: A thin film transistor array panel is provided, which includes: an insulating substrate; a first signal wire formed on the insulating substrate; a second signal wire formed on the insulating substrate and intersecting the first signal wire in an insulating manner; first and second pixel electrodes formed in a pixel area defined by the intersections of the first and the second signal wires and including a plurality of subareas partitioned by cutouts; a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts; and a first thin film transistor connected to the direction control electrode, the first signal wire, and the second signal wire.

Abstract: A method of displaying an image using an image display device in which the image display device has an artificial light source includes inputting primary image signals to the image display device, determining chroma state of the primary image signals for each image frame, and determining gray-scale state of the primary image signals for each image frame. The primary image signals are transformed to multi-color image signals and luminance of the artificial light source is controlled, in response to the determined chroma state and gray-scale state of the primary image signals.

Abstract: A thin film transistor array panel is provided, which includes: a substrate; a plurality of first signal lines formed on the substrate; a plurality of second signal lines intersecting the first signal lines to define pixel areas; first and second pixel electrodes disposed substantially in a pixel area and having different areas; a plurality of thin film transistors connected to the first and the second signal lines and at least one of the first and the second pixel electrodes; a coupling electrode overlapping the second pixel electrode; and a tilt direction defining member for determining tilt directions of liquid crystal molecules formed on the substrate.

Abstract: A liquid crystal display is provided, which includes: first and second panels facing each other, interposing a gap therebetween, and first and second field generating electrodes, respectively; a liquid crystal layer filled in the gap and including a plurality of liquid crystal molecules; first and second tilt direction defining members disposed on the first and the second panels, respectively, and giving a first tilt direction to a group of the liquid crystal molecules; and a third tilt direction defining member disposed on one of the first and the second panels and giving a second tilt direction oblique to the first tilt direction to the group of the liquid crystal molecules.

Abstract: A pixel electrode and a direction control electrode capacitively coupled to the pixel electrode are provided in a pixel. A pixel thin film transistor is connected to a gate line, a data line, and the pixel electrode. A direction control electrode thin film transistor is connected to a previous gate line, a previous data lines or a next data line, and the direction control electrode. The gate lines are supplied with scanning signals, and each scanning signal includes first and second pulses in a frame. The first pulse of a scanning signal is synchronized with the second pulse of a previous scanning signal.

Abstract: A thin film transistor array panel is provided, which includes: a pair of first and second gate lines; a data line intersecting the gate lines in an insulating manner; a storage electrode line supplied with a common voltage; a pixel electrode formed in a pixel area defined by the intersections of the first and the second gate lines and the data line and including a plurality of subareas partitioned by cutouts; a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts; a first thin film transistor connected to the pixel electrode, the first signal line, and the third signal line; a second thin film transistor connected to the pixel electrode, the second signal line, and the third signal line; and a third thin film transistor connected to the direction control electrode, the second signal line, and the fourth signal line.

Abstract: A thin film transistor array panel is provided, which includes: an insulating substrate; a first signal wire formed on the insulating substrate; a second signal wire formed on the insulating substrate and intersecting the first signal wire in an insulating manner; first and second pixel electrodes formed in a pixel area defined by the intersections of the first and the second signal wires and including a plurality of subareas partitioned by cutouts; a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts; and a first thin film transistor connected to the direction control electrode, the first signal wire, and the second signal wire.

Abstract: A method of improving the viewing angle of a vertically-aligned liquid crystal display device is presented. The method involves designing a uniaxial compensation film to provide a retardation value of 200 nm or less for light having a wavelength of about 550 nm. Using this uniaxial compensation film, a display device can be built by obtaining a liquid crystal panel with liquid crystal molecules contained between glass substrates, coupling the uniaxial compensation film to at least one of the glass substrates, and coupling a polarization film and electrodes to the compensation film. Preferably, the uniaxial compensation film has a thickness less than or equal to 50 microns. Where there are multiple compensation films, the total thickness and the total retardation values should be considered.

Abstract: A gray scale voltage generator and a method of generating a gray scale voltage in a transmissive and reflective type liquid crystal display device are disclosed. A transmissive mode gray scale data are transformed into real reflective mode gray scale data. An integer part is extracted from the real reflective mode gray scale data as a first reflective mode gray scale data. The first reflective mode gray scale data and temporary reflective mode gray scale data are mixed in a predetermined ratio by N-frame period. The temporary reflective mode gray scale data has a sum of one and the first reflective mode gray scale data. Pseudo gray scale data are inserted into the second reflective mode gray scale data. Therefore, superior display quality is provided in both transmissive and reflective mode.