Chisso Corporation

Other

Chisso Petrochemical Corporation

Jnc Corporation

Jnc Petrochemical Corporation

Yasuhiro Kubo

Etsuo Nakagawa

Hiroyuki Takeuchi

Shuichi Matsui

Fusayuki Takeshita

Kazutoshi Miyazawa

Tomoyuki Kondo

Takashi Kato

Motoki Yanai

Kanetsugu Terashima

Tomoyuki Kondou

Kouki Sagou

Yasuhiro Haseba

Yasuyuki Sasada

Shigeru Kibe

Toshiki Asakura

Henry Bernhardt

Katsuyuki Kawano

Atsuko Fujita

Shuichi Goto

Katsuyuki Murashiro

Koichi Shibata

Yasuyuki Koizumi

Tetsuya Matsushita

Norio Tamura

Hiroaki Kawashukuda

Mayumi Furuya

Hiroyuki Tekeuchi

Takahiro Miyairi

To minimize color difference during white display, and secure high transmittance in liquid crystal panel driven by FFS mode or the like. Liquid crystal panelhas first substrate AR and second substrate CF oppositely arranged, and liquid crystal layer LC interposed between the first and the second substrates, wherein the first substrate has plural signal linesand scanning linesformed in matrix, upper electrodehaving plural slit-shaped openingsdivided by the scanning and signal lines, and formed for every sub-pixel, and lower electrodeformed with the upper electrode through insulating layer, the second substrate has light-shielding layersuperimposed with the signal and scanning lines in planar view, and color filter layerformed for every sub-pixel, and the liquid crystal layer includes a mixture of at least one compound having negative dielectric anisotropy and at least one compound having positive dielectric anisotropy.

Liquid crystal panel

To allow drive at low voltage and obtaining high transmittance in liquid crystal panel driven by FFS mode. Liquid crystal panelhas first substrateand second substrateoppositely arranged, and liquid crystal layer LC interposed between the first and the second substrates, wherein the first substrate has plural signal linesand scanning linesformed in matrix in mutually insulated state, upper electrodehaving plural slit-shaped openingsdivided by the scanning lines and signal lines, and formed for every sub-pixel, and lower electrodeformed with the upper electrode through insulating layer, the second substrate has light-shielding layersuperimposed with the signal lines and scanning lines in planar view, and color filter layerformed for every sub-pixel, and the liquid crystal layer has at least one compound having negative dielectric anisotropy and at least one compound having positive dielectric anisotropy mixed.

A liquid crystal composition having a nematic phase that includes two components, wherein the first component is at least one compound selected from the group of compounds represented by formulas (1-1) and (1-2), and the second component is at least one compound selected from the group of compounds having a group represented by formulas (2-1) and (2-2): wherein Ris alkyl having 1 to 12 carbons; Zand Zare each independently a single bond or ethylene; Xis independently fluorine, chlorine, OCFor OCFH; Yis independently hydrogen or fluorine; and n is independently 1 or 2.

Liquid crystal composition and liquid crystal display device

A liquid crystal composition having a nematic phase that includes three components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1), the second component is at least one compound selected from the group of compounds represented by formulas (2-1) to (2-3), and the third component is at least one compound selected from the group of compounds represented by formula (3): wherein R, Rand Rare each independently alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris fluorine, alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris fluorine, chlorine, alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris alkenyl having 2 to 12 carbons; Yis fluorine, chlorine or trifluoromethoxy; X, X, Xand Xare each independently hydrogen or fluorine; and one of Xand Xis fluorine, and the other is hydrogen.

A liquid crystal composition, and a liquid crystal display containing the same, having a nematic phase including three components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1), the second component is at least one compound selected from the group of compounds represented by formula (2), and the third component is at least one compound selected from the group of compounds represented by formula (3): wherein Rand Rare each independently alkyl having approximately 1 to approximately 12 carbons or alkenyl having approximately 2 to approximately 12 carbons; Ris alkyl having approximately 1 to approximately 12 carbons or alkoxy having approximately 1 to approximately 12 carbons; Rand Rare each independently alkyl having approximately 1 to approximately 12 carbons; Xis fluorine, chlorine, &#x2014;OCFH, &#x2014;CFor &#x2014;OCF; Yis hydrogen or fluorine; and m and n are each independently 0 or 1.

Liquid crystalline compounds having a large negative &#x394;&#x3b5; low viscosity, a large K/Kvalue, a small &#x394;&#x3b5;/&#x394;&#x22a5; and mutually excellent solubility even at low temperature, compositions containing at least one of the compounds and liquid crystal display devices containing such a liquid crystal compositions are disclosed.

Alkenyl compound having a negative &#x394;&#x3b5; value, liquid crystal composition, and liquid crystal display device

The present invention provides a process for producing a difluoromethyl ether derivative simple and efficient process for producing the difluoromethyl ether derivative represented by Formula (1d') or a difluoromethyl ether derivative represented by Formula (1c&#x2032;):

Difluoromethyl ether derivative and process for producing the same

The compound (1) having 2,3-bis(trifluoromethyl)-1,4-phenylene is stable chemically and has excellent miscibility with other liquid crystal compounds, large and negative dielectric anisotropy and proper optical anisotropy. A liquid crystal composition comprising the compound has large specific resistance and a large voltage holding ratio, and that the composition is useful for a liquid crystal display element. The compound (1) is represented by formula (1):Ra&#xe00c;A&#x2014;Z)&#x2014;(A&#x2014;Z&#xe00d;&#x2014;A&#x2014;Z&#x2014;A&#x2014;Rb&#x2003;&#x2003;(1)wherein Ra and Rb independently are alkyl having 1 to 20 carbons, any &#x2014;CH&#x2014; in the alkyl may be replaced by &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, or &#x2014;C&#x2261;C&#x2014;, and any hydrogen may be replaced by halogen; A, A, A, and Aindependently are 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyridazine-3,6-diyl, or 2,3-bis(trifluoromethyl)-1,4-phenylene, any hydrogen in these rings may be replaced by halogen, and at least one of A, A, A, and Ais 2,3-bis(trifluoromethyl)-1,4-phenylene; Z, Zand Zindependently are a single bond, &#x2014;(CH)&#x2014;, &#x2014;(CF)&#x2014;, &#x2014;COO&#x2014;, &#x2014;OCO&#x2014;, &#x2014;CHO&#x2014;, &#x2014;OCH&#x2014;, &#x2014;CFO&#x2014;, &#x2014;OCF&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;CF&#x2550;CF&#x2014;, &#x2014;C&#x2261;C&#x2014;, &#x2014;(CH)&#x2014;, &#x2014;(CH)O&#x2014;, or &#x2014;O(CH)&#x2014;; m and n independently are 0 or 1.

Liquid crystal compounds having bis(trifluoromethyl) phenyl rings, liquid crystal compositions and liquid crystal display devices

Liquid crystal compositions and liquid crystal display devices

Silicon compound, liquid crystal composition and liquid crystal display

Liquid crystalline compounds having a large negative &Dgr;&isin; low viscosity, a large K /K value, a small &Dgr;&isin;/&Dgr;&perp; and mutually excellent solubility even at low temperature, compositions containing at least one of the compounds and liquid crystal display devices containing such a liquid crystal compositions are disclosed.

Alkenyl compound having a negative &Dgr;&egr; value, liquid crystal composition, and liquid crystal display device

Liquid crystal compositions having board nematic phase range, low viscosity, low threshold voltage and large pre-tilt angle, while meeting the general properties required for AM-LCD. The compositions contain at least one of the compounds of the formulas (I-1) to (I-3), at least one of the compounds of the formulas (II-1) to (II-4), at least one of the compounds of the formulas (III-1) and (III-2), at least one of the compounds of the formulas (IV-1) to (IV-3), and optionally at least one of the compounds of the formulas (V-1) and (V-2), as described in the specification.

Difluorovinyl compound, liquid crystal composition and liquid crystal display

Liquid crystal composition and liquid crystal display element

Growing community of inventors

Chiba, Japan

Yasuhiro Kubo