Abstract: A display device includes a display region which is constituted of a plurality of partial regions, and drive circuits which are connected to a plurality of video signal lines for respective partial regions. The video signal lines and the drive circuits are connected with each other via relay lines. A center line of the drive circuit and a center line of the partial region are arranged at positions displaced from each other, and the relay lines have a bent portion between the drive circuit and the video signal lines. By forming the bent portion on the relay line, the line resistances of the relay lines can be adjusted thus decreasing display irregularities generated by the positional displacement of the drive circuit.

Abstract: A transflective liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal interposed between the first substrate and the second substrate in which the liquid crystal display panel includes a plurality of subpixels having a transmissive portion and a reflective portion, wherein the transmissive portion of each of the plurality of subpixels includes a first common electrode formed on the first substrate, and a transmissive pixel electrode formed on the first common electrode through an interlayer insulating film, wherein the transmissive pixel electrode has a plurality of pectinate electrodes or slits, and wherein the reflective portion of each of the plurality of subpixels includes a reflective electrode formed on the first common electrode, a planar reflective pixel electrode formed on the first common electrode through the interlayer insulating film, second common electrodes formed on the second substrate, and a retarder formed be

Abstract: Light leakage between pixel electrodes over a video signal line in a TN-type liquid crystal display device in which a dot inversion driving is applied with a three o'clock viewing angle is prevented. Pixel electrodes (PX) are formed on both sides of a video signal line (DL) of a first substrate (SUB1), and an end of the pixel electrode (PX) and the video signal line (DL) overlap each other. Over a second substrate (SUB2), a black matrix (BM) is formed in a portion corresponding to the video signal line (DL). By shifting the black matrix BM and the video signal line DL to the left with respect to a gap G between the pixel electrodes PX, it is possible to prevent light leakage caused by a disclination line (DS) which occurs by a horizontal electric field between pixel electrodes (PX).

Abstract: A liquid crystal display panel is provided with a light-shielding film, and a plurality of subpixels arranged in a matrix. The subpixels each include a first electrode formed on a first substrate, a second electrode formed to be located upper than the first electrode, and a color filter formed on a second substrate. The second electrode has a plurality of linear portions. The subpixels are disposed adjacently along the direction of display lines, and any two of the adjacent subpixels have the same color of color filter. The light-shielding film is formed on the second substrate not to cover the pixel boundary between the two adjacent subpixels but to cover pixel boundaries of the remaining subpixels.

Abstract: The present invention enhances a numerical aperture of a liquid crystal display device having color filters. In a liquid crystal display device including a liquid crystal display panel which has a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate, the liquid crystal display panel includes a light blocking film and a plurality of sub pixels arranged in a matrix array, each one of the plurality of sub pixels includes a pixel electrode, a counter electrode and a color filter, an electric field is generated between the pixel electrode and the counter electrode thus driving liquid crystal of the liquid crystal layer. The plurality of sub pixels includes two neighboring sub pixels which are arranged adjacent to each other along the direction of a display line and have the color filters of the same color.

Abstract: The present invention enhances display quality of an IPS-type transflective liquid crystal display device. In the transflective liquid crystal display device including a liquid crystal display panel having a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, the liquid crystal display panel including a plurality of sub pixels each of which has a transmissive portion and a reflective portion, each subpixel out of the plurality of subpixels having a counter electrode formed on one substrate out of the pair of substrates and a pixel electrode formed on one substrate, the counter electrode and the pixel electrode generating an electric field for driving liquid crystal of the liquid crystal layer, the counter electrode and the pixel electrode in the reflective portion are stacked by way of an insulation film, and the counter electrode and the pixel electrode in the transmissive portion face each other in a planer direction.

Abstract: A transflective liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal interposed between the first substrate and the second substrate in which the liquid crystal display panel includes a plurality of subpixels having a transmissive portion and a reflective portion, wherein the transmissive portion of each of the plurality of subpixels includes a first common electrode formed on the first substrate, and a transmissive pixel electrode formed on the first common electrode through an interlayer insulating film, wherein the transmissive pixel electrode has a plurality of pectinate electrodes or slits, and wherein the reflective portion of each of the plurality of subpixels includes a reflective electrode formed on the first common electrode, a planar reflective pixel electrode formed on the first common electrode through the interlayer insulating film, second common electrodes formed on the second substrate, and a retarder formed be

Abstract: A liquid crystal display device improved with the luminance in a reflection portion, including a liquid crystal display panel having a first substrate, a second substrate and liquid crystals put between the first substrate, and the second substrate in which the liquid crystal display panel has a plurality of sub-pixels, the plurality of sub-pixels have, as one basic unit, at least three first to third transmission type sub-pixels and a reflection type sub-pixel, the first to third transmission type sub-pixels and the reflection type sub-pixel are independently driven under control, the first transmission type sub-pixel displays a first color, the second transmission type sub-pixel displays the second color, the third transmission sub-pixel displays a third color, and the reflection type sub-pixel displays a white color.

Abstract: In a liquid crystal display panel having pixels each of which is constituted of a transmissive display region and a reflective display region, a numerical aperture is enhanced by increasing the transmissivity of the transmissive display region or the reflectance of the reflective display region. In a liquid crystal display device which has a display region constituted of a plurality of pixels arranged two-dimensionally in the extending direction of scanning signal lines and in the extending direction of video signal lines, the display region alternately arranges a first pixel row which is formed by arranging a plurality of first pixels each of which has only a transmissive display region in the extending direction of the scanning signal lines and a second pixel row which is formed by arranging a plurality of second pixels each of which has a reflective display region and a transmissive display region in the extending direction of the scanning signal lines in the extending direction of video signal lines.

Abstract: In a transflective liquid crystal display device, assuming that a narrower angle among angles formed by the initial liquid crystal alignment direction of a liquid crystal layer, and the projection direction of a pixel electrode of a transmissive unit is Et and that a narrower angle among angles formed by the initial liquid crystal alignment direction of the liquid crystal layer, and the projection direction of a pixel electrode of a reflective unit is ?r, (1) when the liquid crystal layer possesses a positive-type liquid crystal, the relation of ?t>?r is satisfied, and (2) when the liquid crystal layer possesses a negative-type liquid crystal, the relation of ?r>?t is satisfied. The relations are satisfied by slanting or bending at least one of the pixel electrodes, and the reflectivity is improved.

Abstract: To improve the reflectivity or the transmissivity significantly, there is provided a liquid crystal display device including a liquid crystal display panel having a pair of substrates and liquid crystal sandwiched between the pair of substrates. The liquid crystal display panel includes a plurality of subpixels each having an active element, a pixel electrode, and an counter electrode, in which an electric field is generated by the pixel electrode and the counter electrode to drive the liquid crystal. The liquid crystal display device includes a light shielding film and a color filter formed on a first substrate of the pair of substrates; a scanning line for supplying the active element with scanning voltage, the scanning line being formed on a second substrate of the pair of substrates. The boundary region between the subpixels adjacent along the scanning line has no light-shielding film and no color filter.

Abstract: The present invention provides a liquid crystal display device having a liquid crystal display panel in which a liquid crystal material is held between a first substrate and a second substrate. Liquid crystal molecules are aligned in a direction vertical to a surface of the substrate when a display is made in black; the second substrate has a first counter electrode; the first substrate has a pixel electrode, a protrusion for alignment control, and a second counter electrode having an electric potential different from an electric potential in the pixel electrode and different from an electric potential in the first counter electrode when a display is made in black; and the pixel electrode has a slit or an opening at a position where the protrusion for alignment control is formed, and the second counter electrode extends at a position overlapping the slit or the opening of the pixel electrode.

Abstract: The present invention provides a liquid crystal display device which includes a first pixel and a second pixel which are arranged close to each other and are allocated to the same color, and color filters which differ in color tone and are formed on the first pixel and the second pixel, wherein a voltage for driving liquid crystal of the first pixel and a voltage for driving liquid crystal of the second pixel are controlled independently from each other.

Abstract: Unwanted creation of an after-image in display images is significantly suppressing. A liquid crystal compound having either an ester structure or a heterocyclic structure with more than one oxygen atom is added to liquid crystal material at a mixture ratio of more than ten percent (10%).