Liquid crystal medium and liquid crystal display
A technology of liquid crystal display and liquid crystal medium, applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., capable of solving problems such as long addressing time, insufficient resistivity value, excessive operating voltage, etc.
Active Publication Date: 2009-10-28
MERCK PATENT GMBH
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Problems solved by technology
However, these compositions have serious disadvantages
Among these defects, most of them disadvantageously result i
Method used
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Embodiment 1
[0376]
Embodiment 2
[0378]
Embodiment 3
[0380]
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The present invention relates to dielectrically positive liquid-crystalline media comprising in each case one or more compounds of the three formulae IA, IB and IC: in which the parameters have the respective meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.
Description
technical field [0001] The present invention relates to liquid crystal media and to liquid crystal displays containing these media, in particular to active matrix addressed displays, more particularly to displays of the twisted nematic (TN), in-plane switching (IPS) or fringe field switching (FFS) type. Background technique [0002] Liquid crystal displays (LCDs) are used in many areas for information display. LCDs are used in direct-view displays as well as in projection-type displays. The electro-optic modes used are, for example, twisted nematic (TN), super twisted nematic (STN), optically compensated bending (OCB) and electrically controlled birefringence (ECB) modes and their various variants, among others. All of these modes utilize an electric field substantially perpendicular to the substrate or liquid crystal layer. In addition to these modes, there are also electro-optic modes utilizing an electric field substantially parallel to the substrate or liquid crystal l...
Claims
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Login to view more IPC IPC(8): C09K19/50C09K19/34C09K19/20G02F1/13G02F1/1362
CPCC09K19/3066C09K19/3402C09K2019/0466C09K19/20C09K19/42C09K2019/3422C09K2323/00C09K19/32
Inventor M·恰因塔齐藤泉
Owner MERCK PATENT GMBH
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