Abstract: An optical element is arranged in such a manner that a screen thereof can be hardly observed from a predetermined direction, and a deterioration of an image quality caused by moire does not occur. The optical element is constituted by a first polarizing layer, a second polarizing layer, and a liquid crystal layer arranged between these two polarizing layers. In the optical element, absorption axes of the first polarizing layer and the second polarizing layer are located parallel to each other; the liquid crystal layer is made of hybrid-aligned discotic liquid crystal; and an alignment axis of the liquid crystal layer is located parallel to, or perpendicular to both absorption axes of the first polarizing layer and of the second polarizing layer.

Abstract: There is provided a liquid crystal display device capable of decreasing the driving voltage of a liquid crystal display panel. The liquid crystal display device includes: a first substrate and a second substrate; a liquid crystal layer interposed between the first substrate and the second substrate; and a pixel electrode and a common electrode arranged between the second substrate and the liquid crystal layer. Either one of the pixel electrode or the common electrode has an interdigital shape. An absolute value of both flexoelectric coefficients e11 and e33 of the liquid crystal layer is equal to or greater than 5 pC/m.

Abstract: A shift register circuit which stably operates with low electric power consumption and can realize a long life. In the shift register circuit constructed by connecting a plurality of fundamental circuits in each of which fundamental clocks of three phases are inputted to input terminals and is constructed by a gate line driving circuit, a timing control circuit, and a holding device control circuit, each of the gate line driving circuit and the timing control circuit has charging devices and holding devices. A node is stabilized by the timing control circuit.

Abstract: A reference voltage line is synchronously scanned with scanning of a scanning signal line, voltage of the reference voltage line is set to be the voltage of a common electrode, the second transistor is set to be OFF state during the reference voltage line is set in the common voltage for a pixel wherein a node between an image signal memory and said second transistor is set in a voltage so that said second transistor becomes OFF and the voltage of image signal line is set to be high voltage level when the voltage of the scanning signal line changes from low voltage level to high voltage level for the pixel wherein the node between the image signal memory and the second transistor is set in a voltage so that said second transistor becomes ON.

Abstract: Provided is a liquid crystal display device including: a first substrate; a second substrate; a liquid crystal layer sandwiched between the first and the second substrates; a first polarization plate placed on a side of the first substrate; a second polarization plate placed on a side of the second substrate; and a pixel electrode and a common electrode which are provided on the side of the second substrate on which the liquid crystal layer is placed, in which: at least one of the pixel electrode and the common electrode is interdigital; and the liquid crystal layer has flexoelectric coefficients e11 and e33, both absolute values of which are +7 pC/m or less. Accordingly, a flicker intensity in an IPS liquid crystal display device is suppressed to such a degree as not to influence display quality.

Abstract: An optical element is arranged in such a manner that a screen thereof can be hardly observed from a predetermined direction, and a deterioration of an image quality caused by moire does not occur. The optical element is constituted by a first polarizing layer, a second polarizing layer, and a liquid crystal layer arranged between these two polarizing layers. In the optical element, absorption axes of the first polarizing layer and the second polarizing layer are located parallel to each other; the liquid crystal layer is made of hybrid-aligned discotic liquid crystal; and an alignment axis of the liquid crystal layer is located parallel to, or perpendicular to both absorption axes of the first polarizing layer and of the second polarizing layer.

Abstract: The present invention provides a liquid crystal display device comprising a liquid crystal layer sandwiched between an upper substrate and a lower substrate having a twist angle in the range of about 40 to 65 degrees and a light diffusive reflective electrode having recesses and projections provided on the lower substrate wherein a product of the height of the recesses and projections and a birefringence of the liquid crystal layer is in the range of about 10 to 53 nm at the twist angle of about 40 degrees and about 10 to 64 nm at the twist angle of about 65 degrees, respectively.

Abstract: A liquid crystal display of a vertical alignment (VA) mode using a circular polarization plate is provided which can reduce light leak as observed along an oblique direction and achieve a high contrast ratio. The VA mode uses a liquid crystal layer of vertical alignment in an initial alignment state. A film having generally isotropic optical characteristics in an omnidirection is used as a protective film, on a liquid crystal cell side, of first and second polarization plates disposed outside the liquid crystal cell, and first and fourth retardation films have an Nz coefficient smaller than 1.

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: An object of the present invention is to provide a liquid crystal display device where there are fewer moiré effects between lenticular lenses and the backlight. The present invention provides a liquid crystal display device where the arrangement or form of lenticular lenses 1 varies in waveform so that the center line of the lenses, the width of the lenses, and the height of the lenses vary in the case where light emitted from a backlight 59 is collected into openings 15 for transmitting light by means of lenticular lenses 1.

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 liquid crystal display having a plurality of pixels includes a liquid crystal layer disposed between first and second substrates, and first and second polarization plates disposed on the side opposite to the side where the liquid crystal layer is disposed with respect to the first and second substrates. The second substrate includes a pixel electrode on the side of the liquid crystal layer. Each of the plurality of pixels includes a reflection area and a transmission area. A ratio of the common electrode occupying the aperture in the reflection area is smaller than a ratio of the common electrode occupying the aperture of the transmission area.

Abstract: A display unit which displays a plurality of objects viewed as being located at different depthwise positions by the viewer so as to exhibit an image with depthwise feeling, includes: a single display portion including a far-distant display zone and a near-distant display zone, a polarized beam splitting element in front of the near-distant display zone, a polarized beam changing element in front of the far-distant display zone, and a total reflection mirror for reflecting an image beam emitted from the far-distant display zone, onto the polarized beam splitting element. An image beam emitted from the far-distant display zone is transmitted through the polarized beam changing element, then is reflected at the total reflection mirror, and thereafter is reflected by the polarized beam splitting element before it is viewed by the viewer.

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: The deterioration (darkness) of image quality due to a reduction in the brightness of a single color as a result of the conversion from RGB pixels to RGBW pixels is prevented and a reduction in the power is achieved. A processing portion for conversion from RGB to RGBW 106 is formed of a W generating circuit 201, which is the same as in the prior art, a sub-pixel rendering circuit 202, a W intensity calculating portion 203 which transmits a W intensity setting value 205 to a W generating circuit 201, and a low power backlight control circuit 204 which expands data on the basis of the RGBW pixels generated by the sub-pixel rendering portion 202 and lowers the backlight in accordance with the amount by which the data is expanded. The inputted RGB data is used as the RGBW data with the W intensity calculated by the W intensity calculating portion 203. A backlight control signal is generated in accordance with the amount of data expansion in the sub-pixel rendering portion 202.

Abstract: A liquid crystal display device which can enhance optical transmissivity is provided. One pixel region is divided into a first pixel region, a second pixel region and a third pixel region in order from one video signal line to another video signal line, the first pixel region and the third pixel region adopt the so-called IPS-Pro type structure, and the second pixel region adopts the so-called IPS structure in narrow meaning. A line width of linear electrode in the second pixel region is set to 2.5 ?m or less.

Abstract: In an IPS type liquid crystal display device, it is attempted to improve display quality. In the IPS type liquid crystal display device, in the case where a liquid crystal layer is of a positive liquid crystal, a counter electrode is divided for each display line. When two adjacent display lines are defined as one display line and the other display line, respectively, a gap between the counter electrode of the one display line and the counter electrode of the other display line extends in a direction of the display line as a whole while bending locally. The gap has a first portion extending along an extending direction of a video line and a second portion extending from the first portion along a direction crossing the video line. An initial alignment axis of the liquid crystal layer is in a direction within a range of +5° to +20° or ?5° to ?20° clockwise with respect to the video line.

Abstract: A scanning-line selecting circuit is configured by connecting basic circuits with each other over plural stages. Each of the basic circuits includes a basic scanning-line driving circuit and a voltage raising circuit. A basic scanning signal is inputted into the basic scanning-line driving circuit, which, then, outputs a scanning signal. A charge pulse, a selecting signal, and a discharge pulse are inputted into the voltage raising circuit, which, then, drives the basic scanning-line driving circuit. Accordingly, in the basic circuits, there exists none of the problems of threshold-value shift and voltage lowering. This characteristic makes it possible to implement high efficiency and stable operation.

Abstract: A planar light emitting element is capable of outputting light having high directivity in at least one direction. The planar light emitting element has a light guide plate and first and second low refractive index layers. Light incident on the light guide plate is totally reflected on the interface between the light guide plate and the second low refractive index layer, propagates in the light guide plate, and is output from the light guide plate to the first low refractive index layer through a light output opening section. When a refractive index of the first low refractive index layer is sufficiently smaller than a refractive index of the light guide plate, the light propagates in the light guide plate at a large angle with respect to a light output surface of the light guide plate. When the difference between the refractive indexes of the first and second low refractive index layers is small, a spreading angle of light output to the first low refractive index layer is small.

Abstract: An active matrix type liquid crystal display device driving method for switching a partial display mode and a normal display mode. The respective data lines of the partial display area are scanned in a certain period defined as a frame period, “k” pieces (symbol “k” is integer larger than, or equal to 1) of the partial display areas are present within 1 screen, a common electrode potential is varied 2k times within 1 frame period; a common electrode potential in a partially scanning period for scanning the partial display area is made as a constant potential against a reference of a driving circuit for driving the data lines; and within at least two continued frames, a common electrode potential of a blank period other than the partially scanning period is made as a constant potential which is different from the constant potential in the partially scanning period.