Sharp Kabushiki Kaisha Corporation

Merck Patent Gmbh

Dic Corporation

Yuichi Kawahira

Akira Sakai

Kiyoshi Minoura

Koji Murata

Masahiro Hasegawa

Takako Koide

Kozo Nakamura

Masanobu Mizusaki

Toshihiro Matsumoto

Masayuki Kanehiro

Akira Hirai

Yohei Nakanishi

Mitsuhiro Murata

Takashi Katayama

Nathan James Smith

Kohzoh Nakamura

Yasuhiro Sugita

Atsushi Ban

Kazutoshi Kida

Isamu Miyake

Takeshi Noma

Miho Yamada

Yosuke Iwata

Hideo Ichinose

Hywel Hopkin

Andrew Acreman

Takanori Takeda

Jiyun Yu

Gou Sudou

Shoutarou Kawakami

Norihiro Tanaka

Provided is a liquid crystal display device and a polarizing plate capable of improving the contrast ratio in the front direction. The polarizing plate includes a pair of polarizers including a first polarizer and a second polarizer whose transmission axes are parallel to each other; a retarder between the paired polarizers; and a diffusion layer in at least one of a region between the paired polarizers or a region on a side without the retarder of the first polarizer.

Liquid crystal display device and polarizing plate

The present, invention provides a liquid crystal display device that can exhibit excellent retardation stability against heat and that can prevent reduction in contrast ratio due to scattering even when the liquid crystal display device includes a retardation layer formed by polymerization of a reactive monomer, and a method for producing a liquid crystal display device suitable for production of the liquid crystal display device. The liquid crystal display device of the present invention includes paired substrates and a liquid crystal layer provided between the paired substrates. At least one of the paired substrates includes a retardation layer formed from a polymer of at least one type of monomer. The at least one type of monomer includes a photo-aligning monomer that is to be aligned by polarized light.

Liquid crystal display device and production method for liquid crystal display device

The liquid crystal display device includes: a display region for displaying an image; and a frame region surrounding the display region, the liquid crystal display device sequentially including from a viewing surface side toward a back surface side: a first polarizing plate; a first substrate provided with a switching element connected to a gate line and a source line; a liquid crystal layer; a second substrate; and a second polarizing plate, in the frame region, the first substrate sequentially including from a viewing surface side toward a back surface side a support substrate, a reflectance-reducing layer, and a metal line layer that overlaps the reflectance-reducing layer and includes at least one of a gate line layer provided with the gate line or a source line layer provided with the source line, the reflectance-reducing layer having a lower viewing surface side reflectance than the metal line layer.

Liquid crystal display device

A liquid crystal display device includes, in order from an observation surface side to a hack surface side, a thin film transistor substrate including a color filter layer, a pair of electrodes, and a metal wiring line, a liquid crystal layer containing liquid crystal molecules that are horizontally aligned to the thin film transistor substrate and in which alignment of the liquid crystal molecules is changed due to an electric field generated by applying a voltage to the pair of electrodes, a counter substrate, and a backlight, in which the counter substrate includes a reflective layer disposed outside the pixel area and reflecting incident light from the backlight to the back surface side, the pair of electrodes are a first electrode having a planar shape and a second electrode provided with a and the color filter layer is disposed on the observation surface side of the second electrode.

The liquid crystal display device includes, sequentially from a viewing surface side to a back surface side: a linearly polarizing plate and a circularly polarizing plate including a first &#x3bb;/4 retardation layer; a thin-film transistor substrate including a pair of electrodes disposed in a pixel region and a metal line disposed outside the pixel region; a liquid crystal layer containing liquid crystal molecules aligned parallel to the thin-film transistor substrate, alignment of the liquid crystal molecules varying in response to an electric field generated by application of voltage to the pair of electrodes; a color filter substrate including a color filter layer; and a backlight, the thin-film transistor substrate including a second &#x3bb;/4 retardation layer, the color filter substrate including a reflective layer disposed outside the pixel region and configured to reflect incident light from the backlight toward the back surface.

A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a first polarizer plate, and a second polarizer plate. The first substrate includes a first dielectric substrate, a first electrode, a second electrode, and a first alignment film. The second electrode includes a plurality of slits and a conductive portion. The second substrate includes a second dielectric substrate and a second alignment film. The first substrate further includes a resin layer disposed between the second electrode and the first alignment film. The resin layer within the plurality of slits is as thick as or thicker than the second electrode. The plurality of slits are filled with the resin layer. A difference in height between the resin layer over the conductive portion of the second electrode and the resin layer within the plurality of slits of the second electrode is 10 nm or more.

Liquid crystal display panel comprising a resin layer having a height difference between a portion over an electrode and a portion within a slit and method for manufacturing the same

A liquid crystal display device of the present invention includes in the following order from a viewing surface side a first polarizer, a first positive A plate having an in-plane retardation of 120 nm or greater and 155 nm or smaller, a positive C plate having a thickness retardation of 80 nm or greater and 100 nm or smaller, a first substrate, a second positive A plate having an in-plane retardation of 120 nm or greater and 155 nm or smaller, a horizontally aligned liquid crystal layer, a second substrate, a viewing angle compensation layer, and a second polarizer. The device further includes between the first polarizer and the first positive A plate a positive C plate having a thickness retardation of 30 nm or greater and 80 nm or smaller.

The present invention provides: (I) a display device including a display panel, a retardation layer, and a polarizer which are stacked in the stated order from a back surface side to a viewing surface side and integrated without an adhesive layer; and (II) a method for producing a display device including: forming a first alignment film on a display panel, applying a solution containing first polymerizable liquid crystal to the first alignment film, and curing the first polymerizable liquid crystal to produce a retardation layer; and forming a second alignment film on the retardation layer, applying a solution containing second polymerizable liquid crystal and a dichroic material to the second alignment film, and curing the second polymerizable liquid crystal to produce a polarizer.

Display device and method for manufacturing display device

The liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate includes a first dielectric substrate, a first electrode and a second electrode provided on the first dielectric substrate and capable of generating a horizontal electric field in the liquid crystal layer, and a first alignment film being in contact with the liquid crystal layer. The second substrate includes a second dielectric substrate and a second alignment film provided on the second dielectric substrate and being in contact with the liquid crystal layer. The first alignment film has an azimuthal anchoring strength lower than the second alignment film. The liquid crystal layer includes a nematic liquid crystal material and a polymer network.

Liquid crystal display panel and method for manufacturing the same

A photo-alignment film of the present invention includes a polymer layer containing a photoreactive polymer and metal nanoparticles dispersed in the polymer layer at a concentration of 10particles/(cm&#xd7;100 nm) or more and 10particles/(cm&#xd7;100 nm) or less. The metal nanoparticles have an absorption peak in a wavelength region of 420 nm or less. An absorbance A1 at the absorption peak of the metal nanoparticles and an absorbance A2 at an absorption peak of the polymer layer satisfy a relationship represented by the following formula 1:0.2&#x2264;1/2&#x2264;25&#x2003;&#x2003;(Formula 1).

Photo-alignment film, retardation substrate, liquid crystal display device, and method for producing photo-alignment film

The present invention provides a liquid crystal display device of a transverse electric field mode that may inhibit internal reflection and realize proper black display to which coloring does not occur. The present invention provides a liquid crystal display device including a first linear polarizer, a first &#x3bb;/4 retardation layer, a first substrate, a second &#x3bb;/4 retardation layer configured with a different material from the first &#x3bb;/4 retardation layer, a liquid crystal layer that contains liquid crystals which are horizontally aligned in a case where no voltage is applied, plural electrode pairs that generate a transverse electric field in the liquid crystal layer by a voltage being applied, a second substrate, a second linear polarizer, and a backlight. In a case where a color of light emitted from the backlight is expressed by using chromaticity coordinates (x, y) of an XYZ color system, both of x and y are 0.32 or greater. The plural electrode pairs include a red electrode pair arranged in a red sub-pixel, a green electrode pair arranged in a green sub-pixel, and a blue electrode pair arranged in a blue sub-pixel. A white display applied voltage of the blue electrode pair is different from the white display applied voltage of the red electrode pair and the white display applied voltage of the green electrode pair.

A liquid crystal display panel performs displaying in the normally white mode. A first and a second polarizer are disposed so that the transmission axes thereof are perpendicular to each other. A liquid crystal layer is in a twisted alignment state in the absence of an applied voltage. A first substrate has a first electrode having a plurality of rectangular openings extending in parallel to each other, and a second electrode facing the first electrode with a dielectric layer interposed therebetween. The openings each independently have a width S of more than 0.6 &#x3bc;m and not more than 1.4 &#x3bc;m, and each pair of adjacent openings independently has a distance L therebetween of not less than 0.3 &#x3bc;m and not more than 0.7 &#x3bc;m. A first and a second horizontal alignment film each have an azimuthal anchoring energy of not more than 1&#xd7;10J/m.

Liquid crystal display panel

A liquid crystal display device includes: a liquid crystal panel; a backlight; an illuminance sensor; and a display controller. The liquid crystal panel includes, in order toward the backlight, an antireflection layer, a first linearly polarizing plate, a first &#x3bb;/4 retardation layer, a first substrate, a second &#x3bb;/4 retardation layer, a liquid crystal layer, a second substrate, and a second linearly polarizing plate. The liquid crystal panel has a reflectance within a predetermined range in irradiating the liquid crystal panel with light from an antireflection layer side. The liquid crystal display device satisfies a predetermined relation in the following X and Y, where X (unit: lx) is defined as an environmental illuminance detected by the illuminance sensor, and Y (unit: nit) is defined as a luminance of the backlight, adjusted by the display controller.

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Sakai, Japan

Yuichi Kawahira