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    • 3. 发明授权
    • Liquid crystal composition and liquid crystal display device
    • 液晶组成和液晶显示装置
    • US07625610B2
    • 2009-12-01
    • US11905950
    • 2007-10-05
    • Masayuki SaitoShuichi GotoTakashi Hiraoka
    • Masayuki SaitoShuichi GotoTakashi Hiraoka
    • C09K19/12C09K19/30C09K19/20C09K19/34
    • C09K19/44C09K2019/0448C09K2019/0466C09K2019/123C09K2019/2042C09K2019/3004C09K2019/3009C09K2019/301C09K2019/3016C09K2019/3019C09K2019/3021C09K2019/3025C09K2019/3083Y10T428/10
    • 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 formulas (1-1) and (1-2), the second component is at least one compound selected from the group of compounds having a group represented by formula (2), and the third component is at least one compound selected from the group of compounds represented by formulas (3-1) and (3-2): wherein R1 and R4 are each independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; ring A is independently 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, or 2,5-pyrimidine; ring B, ring C, ring D and ring F are each independently 1,4-cyclohexylene or 1,4-phenylene; ring E is 1,4-cyclohexylene, 1,4-phenylene or 3-fluoro-1,4-phenylene; Z1 is a single bond, ethylene, carbonyloxy, or difluoromethyleneoxy; X1 and X2 are each independently hydrogen or fluorine; Y is fluorine, chlorine or trifluoromethoxy; n is 1, 2, or 3; and p is 0 or 1.
    • 一种具有向列相的液晶组合物,其具有三个成分,其中,所述第一成分为选自式(1-1)和(1-2)所示的化合物的族群中的至少一种化合物,所述第二成分为至少一种 选自具有由式(2)表示的基团的化合物的化合物,第三组分是选自式(3-1)和(3-2)表示的化合物的族群中的至少一种化合物:其中R1和 R4各自独立地为具有1至12个碳的烷基,具有1至12个碳的烷氧基,具有2至12个碳的烯基或具有2至12个碳的烯烃,其中任意的氢被氟取代; 环A独立地为1,4-亚环己基,1,3-二恶烷-2,5-二基,1,4-亚苯基,3-氟-1,4-亚苯基,3,5-二氟-1,4-亚苯基, 或2,5-嘧啶; 环B,环C,环D和环F各自独立地为1,4-亚环己基或1,4-亚苯基; 环E为1,4-亚环己基,1,4-亚苯基或3-氟-1,4-亚苯基; Z1是单键,乙烯,羰氧基或二氟亚甲基氧基; X1和X2各自独立地为氢或氟; Y是氟,氯或三氟甲氧基; n为1,2或3; p为0或1。
    • 6. 发明授权
    • Liquid crystal composition and liquid crystal display device
    • 液晶组成和液晶显示装置
    • US07524540B2
    • 2009-04-28
    • US11598707
    • 2006-11-14
    • Masayuki SaitoMotoki YanaiShuichi Goto
    • Masayuki SaitoMotoki YanaiShuichi Goto
    • C09K19/34C09K19/54
    • C09K19/3458C09K19/3483Y10T428/10
    • 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 formula (1), and the second component is at least one compound selected from the group of compounds having a group represented by formula (2) as a partial structure: wherein R1 and R2 are each independently hydrogen, fluorine, alkyl having 1 to 12 carbons, alkenyl having 2 to 12 carbons or alkoxy having 1 to 12 carbons; R4 is hydrogen, alkyl having 1 to 12 carbons or alkoxy having 1 to 12 carbons; R5, R6, R7 and R8 are each independently alkyl having 1 to 12 carbons; ring A and ring B are each independently 1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene; Z1 and Z2 are each independently a single bond or ethylene; and n and m are each independently 0, 1 or 2, provided that the sum of n and m is 1, 2, 3 or 4.
    • 一种具有向列相的液晶组合物,其包含两种成分,其中所述第一成分为选自式(1)所示的化合物的族群中的至少一种化合物,第二成分为选自化合物组中的至少一种化合物 具有式(2)表示的基团作为部分结构:其中R 1和R 2各自独立地为氢,氟,具有1至12个碳的烷基,具有2至12个碳的烯基或具有1至12个碳的烷氧基; R4是氢,具有1至12个碳的烷基或具有1至12个碳的烷氧基; R5,R6,R7和R8各自独立地为具有1至12个碳的烷基; 环A和环B各自独立地为1,4-亚环己基,1,4-亚苯基,3-氟-1,4-亚苯基或3,5-二氟-1,4-亚苯基; Z 1和Z 2各自独立地为单键或亚乙基; n和m各自独立地为0,1或2,条件是n和m的和为1,2,3或4。
    • 8. 发明授权
    • Automatic ground-clutter rejection in weather pulse radar system
    • 天气脉冲雷达系统中的自动地面杂波抑制
    • US4139847A
    • 1979-02-13
    • US806679
    • 1977-06-15
    • Toshio ShimzuShuichi Goto
    • Toshio ShimzuShuichi Goto
    • G01S13/95G01S9/60
    • G01S13/951
    • Ground clutter is automatically eliminated from echo signals in a weather pulse radar system to provide signals having an amplitude corresponding to the average intensity of the weather echo over a number of pulses. The reflected waves received in the receiver are linear-detected to provide echo signals. Each one of successive echo signals is compared with another later one which is apart from the each one echo signal by a predetermined time period during which fluctuation of weather target becomes independent, to derive an AC component signal corresponding to the fluctuation. The variance of the amplitude of the derived signal is proportional to the mean power of the weather echo. Thus, the ground clutter and the DC component of the weather echo are eliminated. The AC component signals are unipolarized and, thereafter, averaged. The averaged signals have an amplitude corresponding to the average intensity of the weather echo.These averaged signals may be logarithmic-converted to provide logarithmic signals similar as in weather radar system employing radar receivers having a logarithmic characteristic.
    • 天气脉冲雷达系统中的回波信号自动消除接地杂波,以提供具有与多个脉冲上的天气回波的平均强度对应的振幅的信号。 在接收机中接收的反射波被线性检测以提供回波信号。 每个连续的回波信号与另外一个回波信号进行比较,其间距离每个回波信号相隔预定时间段,在此期间气象目标的波动变得独立,以导出对应于波动的AC分量信号。 导出信号幅度的方差与天气回波的平均功率成比例。 因此,消除了天气回波的地面杂波和直流分量。 AC分量信号是单极化的,之后是平均的。 平均信号的幅度对应于天气回波的平均强度。