Liquid crystal compositions comprising silacyclohexane compounds
    82.
    发明授权
    Liquid crystal compositions comprising silacyclohexane compounds 失效
    包含硅环己烷化合物的液晶组合物

    公开(公告)号:US5951913A

    公开(公告)日:1999-09-14

    申请号:US856710

    申请日:1997-05-15

    IPC分类号: C09K19/40 C09K19/34 C09K19/12

    CPC分类号: C09K19/406

    摘要: A liquid crystal composition having a liquid crystal component with a chemical structure of two saturated rings connected directly to one another, and an additional structural isomer thereof having a silane atom in a different position from the first component and having the structure set forth in formula (1) hereinbelow. ##STR1## This composition provides an improved effect with respect to enhancement in both response speed and T.sub.NI (nematic-isotropic transition temperature) as a high voltage hold ratio as required for TFT driving in addition to also lowering the voltage.

    摘要翻译: 一种具有两个饱和环的化学结构的液晶组分的液晶组合物,其两个直接相互连接,并且其另外的结构异构体具有与第一组分不同位置的硅烷原子并且具有式( 1)。 除了降低电压之外,该组合物还提供了作为TFT驱动所需的高电压保持率的响应速度和TNI(向列 - 各向同性转变温度)的增强效果。

    Silacyclohexane compounds, preparation thereof liquid crystal
compositions comprising the same, and liquid crystal devices comprising
the composition
    85.
    发明授权
    Silacyclohexane compounds, preparation thereof liquid crystal compositions comprising the same, and liquid crystal devices comprising the composition 失效
    硅环己烷化合物,其制备方法包括该组合物的液晶组合物和包含该组合物的液晶装置

    公开(公告)号:US5730901A

    公开(公告)日:1998-03-24

    申请号:US644775

    申请日:1996-05-10

    摘要: A silacyclohexane compound of the formulas (I) ##STR1## wherein R represents an organic residue, ##STR2## represents an unsubstituted or substituted silicon-containing cyclohexylene group or a 1,4-cyclohexylene group, ##STR3## represents an unsubstituted or substituted phenylene, an unsubstituted or substituted silicon-containing cyclohexylene group or trans-4-sila-1,4-cyclohexylene group, or a 1,4-cyclohexylene group provided that at least one of these residues represents a silicon-containing cyclohexylene group, m, n, i, k and l are, respectively, 0 or 1 provided that j+l=0 or 1 and m+k=1 or 2, L.sub.1 and L.sub.2, respectively, represent H or F, m and n are, respectively, 0 or 1, X.sub.1 and Y independently represent H, F or Cl, and X.sub.2 represents F or Cl. A liquid crystal composition comprising the silacyclohexane compound of the above formula is also described, along with a liquid crystal device comprising the composition.

    摘要翻译: 式(I)的硅环己烷化合物其中R表示有机残基,“IMAGE”表示未取代或取代的含硅亚环己基或1,4-亚环己基, 未取代或取代的含硅亚环己基或反式-4-硅烷-1,4-亚环己基或1,4-亚环己基,条件是这些残基中的至少一个表示含硅亚环己基,m n,i,k和l分别为0或1,只要j + 1 = 0或1,m + k = 1或2,则L1和L2分别表示H或F,m和n分别为 ,0或1,X1和Y独立地表示H,F或Cl,X2表示F或Cl。 还描述了包含上式的硅环己烷化合物的液晶组合物以及包含该组合物的液晶装置。

    Silacyclohexane compound, a method of preparing it and a liquid crystal
composition containing it
    86.
    发明授权
    Silacyclohexane compound, a method of preparing it and a liquid crystal composition containing it 失效
    硅环己烷化合物,其制备方法和含有它的液晶组合物

    公开(公告)号:US5679746A

    公开(公告)日:1997-10-21

    申请号:US576619

    申请日:1995-12-21

    摘要: A silacyclohexane compound represented by the following general formula (I): ##STR1## wherein R denotes a mono- or di-fluoroalkyl group with 1-10 carbons: ##STR2## denotes a trans-1-silacyclohexylene or a trans-4-silacyclohexylene group whose silicon at position 1 or position 4 has a substitutional group of H, F, Cl or CH.sub.3 ; X denotes a CN, F, Cl, CF.sub.3, CF.sub.2 Cl, CHFCl, OCF.sub.3, OCHF.sub.2, OCF.sub.2 Cl, OCHFCl, (O).sub.3 CY.sub.1 .dbd.CX.sub.1 X.sub.2 (X.sub.1 and Y.sub.1 denote H, F or Cl, and X.sub.2 denotes F or Cl) (O).sub.3 C.sub.p H.sub.q F.sub.r (p denotes 2, 3 or 4, and q and r are integers which satisfy the equation q+r=2p+1, and s denotes 0 or 1), the aforementioned R, or an alkyl or alkoxy group with 1-5 carbons; Y denotes H or F; and Z denotes H or F; and process of manufacturing same.

    摘要翻译: 由以下通式(I)表示的硅环己烷化合物:其中R表示具有1-10个碳的单 - 或二 - 氟烷基:表示反式-1-硅杂环己烯或反式-4-硅杂环己烯 其位置1或位置4的硅具有H,F,Cl或CH 3的取代基; X表示CN,F,Cl,CF 3,CF 2 Cl,CHFCl,OCF 3,OCHF 2,OCF 2 Cl,OCHFCl,(O)3CY 1 = CX 1 X 2(X 1和Y 1表示H,F或Cl,X2表示F或Cl)(O) 3CpHqFr(p表示2,3或4,q和r是满足方程式q + r = 2p + 1,s表示0或1的整数),上述R 1或具有1-5个碳原子的烷基或烷氧基 碳; Y表示H或F; Z表示H或F; 和制造过程相同。

    Digital trimming for frequency adjustment

    公开(公告)号:US5587691A

    公开(公告)日:1996-12-24

    申请号:US478782

    申请日:1995-06-07

    IPC分类号: G04G3/02 G06F1/14 H03B19/00

    CPC分类号: G04G3/02

    摘要: A digital trimming circuit is used to produce a stable time reference signal. This type of reference time signal can be used in equipment, such as watches, which have motors and acoustic outputs that interfere with producing the time reference signal. A basic oscillation frequency, which is produced by an oscillator circuit, is frequency divided to form the generic time reference signal. The digital trimming circuit generates a control signal to shorten the period of the time reference signal by predetermined amounts based on correction data. The control signal is in the form of pulses which can be dispersively applied to create substantially equal intervals between pulses during one time period of the time reference time signal. While maintaining the necessary digital trimming amount in one digital trimming time period, an expansion/reduction amount of the time reference signal is suppressed at one digital trimming time instant. Therefore, interference between the digital trimming timing and the predetermined output timing can be avoided.

    Silacyclohexane carbaldehyde compounds and processes for preparing
silacyclohexane-based liquid crystal compounds from the carbaldehyde
compound
    90.
    发明授权
    Silacyclohexane carbaldehyde compounds and processes for preparing silacyclohexane-based liquid crystal compounds from the carbaldehyde compound 失效
    硅环己烷甲醛化合物和由甲醛化合物制备硅环己烷基液晶化合物的方法

    公开(公告)号:US5527490A

    公开(公告)日:1996-06-18

    申请号:US434814

    申请日:1995-05-04

    摘要: A silacyclohexane carbaldehyde compound of the following formula (I) ##STR1## wherein Ar represents a phenyl group or a tolyl group, and R represents a phenyl group, a tolyl group, a linear alkyl group, a mono or difluoroalkyl group, a branched alkyl group, an alkoxyalkyl group or an alkenyl group. Processes for preparing a silacyclohexane-based liquid crystal compound of the following formula (II) or (III) from the silacyclohexane carbaldehyde are also described ##STR2## wherein X represents CN, F, Cl, CF.sub.3, CClF.sub.2, CHClF, OCF.sub.3, OCClF.sub.2, OCHF.sub.2, OCHClF, (O).sub.m CT=CX.sub.1 X.sub.2, O(CH.sub.2).sub.r (CF.sub.2).sub.s X.sub.3, R or OR wherein m is a value of 0 or 1, T and X.sub.1 independently represent H, F or Cl, X.sub.2 represents F or Cl, r and s are, respectively, a value of 0, 1 or 2 provided that r+s=2, 3 or 4, X.sub.3 represents H, F or Cl, and R has the same meaning as defined before, Y and Z independently represent a halogen or a methyl group, i and j are independently a value of 0, 1 or 2.

    摘要翻译: 下式(I)的硅环己烷甲醛化合物其中Ar表示苯基或甲苯基,R表示苯基,甲苯基,直链烷基,单或二氟烷基, 支链烷基,烷氧基烷基或烯基。 还描述了从硅环己烷甲醛制备下式(II)或(III)的硅杂环己烷系液晶化合物的方法,其中X表示CN,F,Cl, CF 3,CClF 2,CHClF,OCF 3,OCClF 2,OCHF 2,OCHClF,(O)mCT = CX1X2,O(CH2)r(CF2)sX3,R或OR,其中m为0或1,T和X1独立地表示H ,F或Cl,X2表示F或Cl,r和s分别为0,1或2的值,条件是r + s = 2,3或4,X3表示H,F或Cl,并且R具有 与前述相同,Y和Z独立地表示卤素或甲基,i和j独立地为0,1或2的值。