摘要:
Disclosed herein is a liquid-crystal display device capable of reducing leakage of light under a black state due to scattering from a liquid-crystal layer, and having high-contrast ratio, excellent image quality performance. The liquid-crystal display device comprises: a liquid-crystal panel including one pair of polarizers disposed on one pair of substrates, a liquid-crystal layer held in sandwiched form between the pair of substrates, and a group of electrodes formed on at least one of the pair of substrates for applying an electric field to the liquid-crystal layer; and a light source unit disposed outside the pair of substrates. The liquid-crystal layer includes a liquid-crystal material having an ordinary-light refractive index of at least 1.46, but up to 1.49, an extraordinary-light refractive index of at least 1.54, but up to 1.59, and a mean photoelastic constant of at least 8, but up to 25, and exhibiting a nematic phase.
摘要:
A thin light source unit employs a plurality of light emitting diode chips in multiple colors to generate highly uniform white light at a low cost and with a high light utilization efficiency. The light source unit has light emitting diode chips, lead frames, and a transparent sealer. A plurality of the light emitting diode chips in the same color are connected in series to three or more sets of the lead frames. The light emitting diode chips in at least three different colors are integrally sealed with the transparent sealer. An illuminating apparatus using the light source units, and a display apparatus using the illuminating apparatus are also provided.
摘要:
A light illumination apparatus and a liquid crystal display using the apparatus, comprising a light source on a lateral side and a reflector on the backside of a light-pipe, further comprising an air layer between the light-pipe and the reflector, further comprising a light scattering control layer disposed at a portion of the light-pipe and having directivity in a direction substantially normal to the light emission plane, where total internal reflection of the incident light from the light source at an interface of the light-pipe is achieved, and a means for moving the predetermined region, wherein the time average amount of emitted light is substantially equal in each of all light emission regions, and there is time when the light emissive region substantially does not emit light.
摘要:
An illumination device using a plurality of LED light sources each of which is driven by a single power supply is provided to attain simple operational response and voltage control.The illumination device includes a light source module, the module comprising: a substrate; a plurality of wiring lines provided on the substrate; and a plurality of LED devices implemented in the wiring lines; wherein the plurality of LED devices include a plurality of red LED devices, a plurality of green LED devices, and a plurality of blue LED devices; wherein the plurality of wiring lines include a wiring line having the plurality of red LED devices implemented in series, a wiring line having the plurality of green LED devices implemented in series, and a wiring line having the plurality of blue LED devices implemented in series; and wherein the plurality of wiring lines are connected in parallel and driven by a single power voltage.
摘要:
In an in-plane switching (ISP) mode controlling transmission and shielding of light by application of lateral electric field to liquid crystal molecules aligned in the direction in parallel to a substrate, increase in luminance or color shift at a black-representation area or upon black-representation condition at an inclined viewing angle is reduced. First and second polarizing plates sandwiching a liquid crystal layer each have a supporting member (plate) on at least either surface thereof. The supporting member on the inside surface of the first polarizing plate on the side of an illumination unit has a retardation in the thickness direction R1·h1 and the supporting member on the inside surface of the second polarizing plate has a retardation in the thickness direction R2·h2. In the O-mode, R1·h1>R2·h2 and in the E-mode, R1·h1
摘要:
A liquid crystal display apparatus having a liquid crystal panel including a pair of substrates, a plurality of electrodes formed on at least one of the pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, and a light source provided on one surface of the liquid crystal panel. An electric field in the liquid crystal layer produced by the plurality of electrodes is predominantly in parallel with surfaces of the pair of substrates. The light source has a luminous characteristic with a first chromaticity and the liquid crystal panel has a characteristic of spectral transmittance with a second chromaticity different from the first chromaticity so as to compensate for the color of the light source.
摘要:
An illumination device is partitioned into a plurality of areas. Rays of light emanating from light sources 203 of individual units are intercepted appropriately by means of a light barrier 204 and the transmission factor at individual positions of a light diffuser 205 is changed in accordance with light flux reaching the light diffuser 205. The transmission factor at individual positions of a liquid crystal panel is controlled in accordance with a luminance unevenness distribution of the illumination device.
摘要:
An IPS-mode liquid-crystal display apparatus for controlling transmission and cutoff of light by applying a cross-directional electric field to liquid-crystal molecules horizontally oriented reduces diagonal luminance rise and coloring at the time of black display by a simple configuration. A configuration is used in which an optical phase compensation member for canceling the double refraction property of a polarization-plate support base material is provided between the liquid-crystal-layer-side support base material of a lower polarizer and a liquid-crystal layer. Or, a configuration is used in which the optical phase compensation for canceling double refraction property of the polarization-plate support base material is provided between the liquid-crystal-layer-side support base material and the liquid-crystal layer.
摘要:
To provide a display device capable of displaying a moving picture with high definition and at high speed. An image display system includes: an image display unit; and a control unit. The control unit has: a block discrimination circuit portion; an image processing portion; a storage portion; and a synchronizing signal generation portion. The block discrimination circuit portion discriminates a moving picture or a still picture to process the image information in accordance with the discriminated result, in which the number of gradations for the image information processed when the discriminated result is the moving picture is lower than when the discriminated result is the still picture. Thereby, the high definition image display and the high speed moving picture display can be effected by reducing the information with lower degree of recognition.
摘要:
A display method can achieve both a substantially high definition image display and high speed dynamic image display. The image displaying method of an image displaying apparatus having a display portion consisting of a plurality of pixels takes each of a predetermined number of pixels as one block unit and forms one screen image for display by combining a region for displaying the same information on a plurality of pixels in one block unit during one scanning period and a region for permitting display of respectively different information on the plurality of pixels in the one block unit.