Abstract: The present invention provides a liquid crystal display device in which increase in manufacturing costs is minimized and the utilization rate of illumination light emitted by a backlight source is also improved. A pixel electrode is formed at the intersection of each signal line and each gate line on the liquid-crystal-layer side of a first transparent substrate. A color filter is provided for each pixel electrode on the liquid-crystal-layer side of a second transparent substrate. A dichroic half mirror is provided for each of the color filters.

Abstract: In a transflective liquid crystal display device having a first substrate, a second substrate, a liquid crystal layer disposed between the two substrates and a reflective region and a transmissive region in each pixel; the second substrate has a pixel electrode to drive the liquid crystal layer and a common electrode; the reflective region of the second substrate is formed with an in-cell polarizer between the pixel electrode and common electrode and the reflector. In this invention, the thickness of the liquid crystal layer is set greater in the reflective region than in the transmissive region. The difference in the liquid crystal layer thickness between the reflective region and the transmissive region is provided by forming a step in the first substrate or the second substrate.

Abstract: A liquid crystal display device in which: there are provided lenticular lenses 1 and color separation filters, associated with a subpixel row direction, on the backlight 59 side with respect to lenticular lenses 1; and there are arranged, in a RGW row, a color separation filter 19B reflecting B wavelengths, and in a GBW row, a color separation filter 19R reflecting R wavelengths; wherein, together with collecting light in transmissive aperture parts 15 with lenticular lenses 1 and improving the transmitted quantity of light, the light reflected by color separation filters 19 is returned to backlight 59 and reutilized.

Abstract: A transflective liquid crystal display device is arranged to make the overall structure thinner and enhance a reflecting contrast ratio. The transflective liquid crystal display includes a first substrate, a second substrate, a liquid crystal layer laid between the substrates, a first polarization plate located on the opposite side of the first substrate to the side where the liquid crystal layer is located, a second polarization plate located on the opposite side of the second substrate to the side where the liquid crystal layer is located, and a plurality of pixels formed between the substrates, each of the pixels having a reflective area and a transmissive area. An in-cell retardar is located between the second substrate and the liquid crystal layer. An optical compensation film is located between the first substrate and the first polarization plate, between the second substrate and the second polarization plate, or both.

Abstract: In a transflective type IPS type liquid crystal display device in which a phase difference layer has been built in a reflection display portion, a retardation value of the phase difference layer corresponding to a short wavelength color filter is different from a retardation value of the phase difference layer corresponding to a long wavelength color filter; while a blue display pixel is set to the short wavelength color filter and both red and green pixels are set to the long wavelength filter, the retardation value of the phase difference layer corresponding to the former-mentioned short wavelength color filter is made smaller than the retardation value of the phase difference layer corresponding to the latter-mentioned long wavelength color filter.

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: An image is displayed by modulating TM-polarized light between the polarizer 2 and the wire grid polarizer 18 through the variation of the optical characteristic of the liquid crystal layer 12 interposed between the transparent plate 4 and the transparent plate 26. Degradation of contrast in the bright ambience is avoided by providing an absorption layer for absorbing TE-polarized light on that surface of the wire grid polarizer 18 which faces the liquid crystal layer 12.

Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.

Abstract: In a liquid crystal display device, rays of light of a light source for blue light emission are concentrated on a fluorescent material by using a lens of a first micro-lens array and fluorescent rays from the fluorescent material are concentrated on a pixel of corresponding color by using a lens of a second micro-lens array.

Abstract: A transreflective or “semi-transmissive” liquid crystal display (LCD) device of the vertical alignment (VA) type is disclosed. The VA-LCD device includes a pair of spaced-apart substrates with a layer of liquid crystal (LC) material sandwiched therebetween. The LCD device also includes a polarization plate provided on one of the substrates, another polarization plate on the other substrate, and a matrix of rows and columns of pixels formed between the substrates. Each pixel has a reflection part and a transmission part. The LC layer is variable in thickness so that its portion at the transmission part is thicker than a portion at the reflection part. At the reflection part, an internal retardation plate having an optical phase difference is disposed between the LC layer and its associated substrate. This plate forms an angle of about 45 degrees with the absorption axis of each polarization plate.

Abstract: A liquid crystal display element comprising two transparent substrates, at least one of which is transparent, and a liquid crystal layer interposed between the two substrates. A plurality of pixels and active elements for driving the liquid crystal at the plurality of pixels are incorporated into at least one of the two substrates, and an optical axis of an incident light beam upon the liquid crystal layer is present in a plane which is substantially perpendicular to a direction of orientation of liquid crystal molecules on at least one of the two substrates, and the incident light impinges upon the liquid crystal layer in a direction which is inclined by a predetermined angle to the direction of the normal line of the substrate. With this arrangement, a desired phase modulation is obtained through slight motion of the liquid crystal molecules, thereby greatly reducing the liquid crystal drive voltage.

Abstract: A display of an electrochromic type, including an active matrix substrate on which a plurality of pixel electrodes corresponding to pixels are arranged in a matrix form; a counter substrate which is provided with a transparent electrode that is common with respect to a plurality of the pixel electrodes; and an electrochromic material which is sandwiched between the active matrix substrate and the counter substrate, and is colored in a boundary either between itself and the pixel electrode or between itself and the transparent electrode; wherein the pixel electrode other than an electrode-exposed part which contacts with the electrochromic material is covered with a transparent protective film; and the electrode-exposed part has a different area from the area of the part onto which a current generated between the transparent electrode and the pixel electrode concentrates, out of the transparent electrode.

Abstract: An image display apparatus configured by a display panel having an image memory element in a pixel, which achieves low power consumption. A nonvolatile image memory element 1, which can change the resistance value by phase change, is connected to a pixel electrode 25 of a liquid crystal element 5. The output of a thin-film transistor 17 driven by scanning and signal electrode lines 7, 9 is connected to the pixel electrode 25. When the scanning electrode line 7 is selected to have a high level voltage, the thin-film transistor 17 is turned on and a current signal flowing through the signal electrode 9 is sent through the image memory element 1 to a reference electrode line 15. Depending on the current value or pulse width passing through the image memory element 1, the resistance of the image memory element 1 is changed and is stored as a resistance value.

Abstract: A liquid crystal display element which has the high speed response and the high contrast and a display device employing the same are provided. In a display device employing a reflection type liquid crystal light valve, a retardation of a retardation plate which is provided between a polarizing element such as a polarizing beam splitter and the reflection type liquid crystal light valve is generally made ¼ of the wavelength of the incident light, and an optical axis (a slow axis or a fast axis) of the retardation plate and the polarizing direction of the incident polarized light are shifted from each other by slightly larger than 0 degree in order to arrange such optical elements.

Abstract: The present invention enhances display efficiency and a contrast of a reflective part in an IPS-type transflective liquid crystal display device.

Abstract: The present invention provides an IPS-type transflective liquid crystal display device in which a contrast is not inverted between a transmissive portion and a reflective portion. The transflective liquid crystal display device includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates, wherein the liquid crystal display panel includes the plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels includes a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field is generated between the pixel electrode and the counter electrode thus driving the liquid crystal.

Abstract: A semi-transparent homogeneous-alignment LCD device including a transmission part and a reflection part, a first linear dielectric protrusion disposed between a common electrode and a liquid crystal layer so as to extend over a plurality of pixels in a short side direction of pixels and be disposed nearly in center of the transmission part, and a second linear dielectric protrusion disposed in the reflection part between the common electrode and a first substrate so as to extend over a plurality of pixels in the short side direction, wherein an alignment direction of liquid crystal molecules crosses the first and second linear dielectric protrusions at right angles and is parallel to a long side direction of pixels, and a tilt angle of the liquid crystal molecules is approximately 0°, or even if there is a pre-tilt angle, the tilt angle of the liquid crystal molecules is 2° or less.

Abstract: A display of an electrochromic type, including an active matrix substrate on which a plurality of pixel electrodes corresponding to pixels are arranged in a matrix form; a counter substrate which is provided with a transparent electrode that is common with respect to a plurality of the pixel electrodes; and an electrochromic material which is sandwiched between the active matrix substrate and the counter substrate, and is colored in a boundary either between itself and the pixel electrode or between itself and the transparent electrode; wherein the pixel electrode other than an electrode-exposed part which contacts with the electrochromic material is covered with a transparent protective film; and the electrode-exposed part has a different area from the area of the part onto which a current generated between the transparent electrode and the pixel electrode concentrates, out of the transparent electrode.

Abstract: A projection-type display apparatus includes at least one light source for emitting three primary color lights, a display panel, a control circuit for controlling the display panel, an illumination light optical system for illuminating the display panel with the light emitted from the light source, and a projection lens for projecting the light modulated by the display panel. The illumination light quantity is modulated by a control signal generated according to a video signal in at least one of the illumination color lights among the three primary color lights and the upper limit of the dynamic range of the display panel is used without depending on the video signal.

Abstract: The present invention provides a projection type liquid crystal display device capable of achieving a high contrast ratio without causing optical leakage on boundary wavelength regions of three color light components in the case of a black display. The projection type liquid crystal display device is provided with a first and a second retarder stacks each of which has cut-off wavelengths. The cut-off wavelength on the short wavelength side of the first retarder stack is placed on a shorter wavelength side as compared with the cut-off wavelength on the short wavelength side of the second retarder stack, and the cut-off wavelength on the long wavelength side of the first retarder stack is placed on a longer wavelength side as compared with the cut-off wavelength on the long wavelength side of the second retarder stack.