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Daisuke Kajita, Hitachi JP

Daisuke Kajita, Hitachi JP

Patent application numberDescriptionPublished
20080309858LIQUID CRYSTAL DISPLAY DEVICE - To reduce an oblique luminance disturbance and color deterioration in a liquid crystal display device of the IPS mode.12-18-2008
20090059121Illumination Unit and Display Unit Incorporating the Same - An illumination device has at least one fluorescent tube, a lower frame supporting the fluorescent tube, a light diffusion plate which opposes the lower frame with the fluorescent tube being interposed therebetween for forward diffusion of output light of the fluorescent tube, a reflection sheet disposed along the fluorescent tube side of the lower frame for reflecting the fluorescent light toward the light diffuser plate, and an upside reflector covering an electrode of the fluorescent tube for reflecting the light toward the light diffuser. When letting a direction along a length of the fluorescent tube be a horizontal direction, a distance between the fluorescent tube and the reflection sheet at at least one of nearby portions of right and left ends of the illuminator is greater than such distance at a central portion thereof. A liquid crystal display (LCD) apparatus using the illuminator is also disclosed.03-05-2009
20090059156Liguid-Crystal Display Device - 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.03-05-2009
20090066874LIQUID CRYSTAL DISPLAY APPARATUS - In a liquid crystal apparatus in which a white light of a fluorescent tube corresponding to a linear light source repeats plural times of diffusions and reflections between a reflection sheet and a diffusion plate, and is thereafter input as a back light to a liquid crystal panel corresponding to a display screen, an object of the invention is to make it possible to secure a brightness uniformity even if the liquid crystal apparatus is thinned. It is possible to prevent a brightness unevenness caused by a short distance from the reflection sheet to the diffusion plate, by preventing a deformation (a deformation which is convex toward the fluorescent tube) of the diffusion plate due to a thermal expansion of the diffusion plate caused by a heat generation of the fluorescent tube, by arranging at least one pin mold hold so as to support a portion near an approximately center of the diffusion plate.03-12-2009
20090096951Liquid Crystal Display Device - An object is to provide a liquid crystal display device having a thin structure with a backlight device appropriate for illuminating a liquid crystal panel where there is no area in band form where the brightness is inconsistent.04-16-2009
20090135346Liguid Crystal Display Device - There is provided a liquid-crystal-layer 05-28-2009
20100165238LIQUID CRYSTAL DISPLAY DEVICE - The liquid crystal display device capable of reducing warp includes a liquid crystal display portion (07-01-2010
20100271575LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device including: a substrate (10-28-2010
20110013115LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a liquid crystal display portion (01-20-2011
20110116023POLARIZER AND LIQUID-CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus includes a first polarizer located on one side of a first substrate, a second polarizer located on the opposite side of a second substrate, a liquid crystal layer formed of liquid crystal molecules and between the first and the second substrates so that the liquid crystal molecules may be aligned in parallel to the first or the second substrate and to which an electric field is applied in parallel to the first substrate, and a lighting device. The first or the second polarizer includes a polarization layer and supporting materials located on both sides of the polarization layer, reducing light leakage and a colour shift in a black display state when viewed from the oblique direction.05-19-2011

Patent applications by Daisuke Kajita, Hitachi JP