摘要:
A rubber mixture is particularly based on natural rubber (NR), epoxidized natural rubber (E-NR), isoprene rubber (IR), butadiene rubber (BR), acrylate rubber (ACM), styrene-butadiene rubber (SBR), or blends of these types of rubber, particularly NR/SBR- blends or NR-BR- blends, as well as the usual mixing ingredients such as fillers, plasticizers, anti-aging media, as well as additional additives, if needed. This mixture produces a plate-like, elastic intermediate layer with low dynamic stiffening; high dynamic stressability; high specific volume resistivity; and low frequency-dependence of the dynamic stiffening. The intermediate layer is arranged particularly between the base of the rail and the top side of the tie in connection with high-speed rail tracks. The underside of the intermediate layer is provided with at least one recess, with formation of an edge extending all around, and facing the top side of the tie. The top side of the intermediate layer which is the surface supporting the base of the rail, is substantially planar shaped.
摘要:
The present invention provides a STN LCD device having at least two domains per pixel, comprising:a) a liquid crystal layer having opposite sides;b) a set of electrodes on either side of said liquid crystal layer;c) a fluorinated polyimide alignment film for aligning a liquid crystal layer.
摘要:
A polyimide alignment film based on pyromellitic dianhydride and a 2,2'-bis(perfluoroalkoxy)benzidine, as major components, for use in liquid crystal display devices.
摘要:
A polyimide alignment film based on pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound, such as 1,3-bis(4-aminophenoxy)benzene or 1,4-bis(4-aminophenoxy)benzene, providing low tilt angles of from to 2 degrees when used in liquid crystal displays.
摘要:
A polyimide alignment film based on pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound, such as 1,3-bis(4-aminophenoxy)benzene or 1,4-bis(4-aminophenoxy)benzene, providing low tilt angles of from 1 to 2 degrees when used in liquid crystal displays.
摘要:
A polyimide alignment film based on 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride and ortho-substituted aromatic diamines, such as 2,3,5,6-tetramethyl-p-phenylene diamine, 2,4,6-trimethyl-m-phenylene diamine and 1,5-diaminonaphthalene, providing high voltage holding ratio and high tilt angle when used in active matrix liquid crystal displays.
摘要:
The present invention relates to polyimide photo alignment films for liquid crystal display devices comprising an aromatic tetracarboxylic dianhydride component containing 3,3',4,4'-benzophenone tetracarboxylic dianhydride and an aromatic diamine component containing at least one diamine of the group of formulae AI to AIII as given in the text. Further display devices and methods of their fabrication employing a photo alignment process are disclosed.
摘要:
A poly(2,6-piperazinedione) liquid crystal alignment film providing high voltage holding ratio and high tilt angle when used in active matrix and super twisted nematic liquid crystal displays.
摘要:
At the rotor of a synchronous linear stator motor, a stray flux measuring device (3', 3") measures the angle .theta. of the stator current distribution .phi. and a speed-measuring device (4) measures a speed containing faults. At the stator, an angle .theta.* for the impressed stator current distribution is taken off and the difference of the two angles (.theta.*-.theta.) indicating the stator current distribution is added as a correction signal to the speed (adder 5), from which the pole position (R) is determined by integration. If the pole position R is used to control the frequency of the stator current thereby, a control loop for the angle difference .theta.*-.theta. is produced which regulates the measured pole position R to the actual pole position.