JP2018524634A - 光変調素子を調製する方法 - Google Patents
光変調素子を調製する方法 Download PDFInfo
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- JP2018524634A JP2018524634A JP2017567666A JP2017567666A JP2018524634A JP 2018524634 A JP2018524634 A JP 2018524634A JP 2017567666 A JP2017567666 A JP 2017567666A JP 2017567666 A JP2017567666 A JP 2017567666A JP 2018524634 A JP2018524634 A JP 2018524634A
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- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical group C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 description 1
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical group C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- 150000004867 thiadiazoles Chemical group 0.000 description 1
- NMFKEMBATXKZSP-UHFFFAOYSA-N thieno[3,2-b]thiophene Chemical compound S1C=CC2=C1C=CS2.S1C=CC2=C1C=CS2 NMFKEMBATXKZSP-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N thiocyanic acid Chemical compound SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 125000006168 tricyclic group Chemical group 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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Abstract
Description
、即ち、液晶の有効複屈折率およびセルの間隔の積を波長の1/4に選択するすることにより、この配置をスイッチ可能な1/2波長板として使用できる。これに関連して波長は550nm、即ち、ヒトの目の感度が最も高い波長を言う。
式中、
P0は、コレステリック液晶の非摂動ピッチであり、
<e>は、スプレイ・フレキソエレクトリック係数(esplay)と、ベンド・フレキソエレクトリック係数(ebend)との平均[<e>=1/2(esplay+ebend)]であり、
Eは、電界の強度であり、および
Kは、スプレイ弾性定数(k11)およびベンド弾性定数(k33)との平均[K=1/2(k11+k33)]であり、
および、ただし、
<e>/Kは、フレキソ弾性比と呼ばれる。
式中、
γは、へリックスの歪に伴う有効粘度係数である。
式中、
k22は、ツイスト弾性定数であり、
ε0は、真空の誘電率であり、および
Δεは、液晶の誘電異方性である。
a)少なくとも一方の基板が光に対して透明であり対向する基板の両側に電極が設けられた2枚の基板の間に、1種類以上のビメソゲン化合物、1種類以上のキラル化合物および1種類以上の重合性化合物を含む液晶媒体の層を提供する工程と、
b)液晶媒体をその等方相に加熱する工程と、
c)スイッチ状態間で液晶媒体をスイッチするのに十分な電圧を電極間に印加しながら、液晶媒体を透明点より10°以下まで冷却する工程と、
d)電極間に電圧を印加しながら、重合性化合物の光重合を誘発する光放射に液晶媒体の前記層を曝露する工程と
を含む方法に関する。
上および下で、以下の意味を適用する。
式中、
cは、キラル化合物の濃度である。
Δn=ne−no (5)
式中、neは異常屈折率であり、noは通常屈折率であり、平均屈折率nav.は以下の式(6)で与えられる:
nav.=[(2no 2+ne 2)/3]1/2 (6)
異常屈折率neおよび通常屈折率noは、アッベ屈折計を使用して測定できる。次いで、式(5)からΔnを計算できる。
本願において用語「誘電的に正」は、Δε>3.0を有する化合物または成分に対して使用され、「誘電的に中性」は−1.5≦Δε≦3.0を有するもの、および「誘電的に負」はΔε<−1.5を有するものである。Δεは、1kHzの周波数および20℃で決定する。それぞれの化合物の誘電異方性は、ネマチックホスト混合物におけるそれぞれ個々の化合物の10%溶液の結果から決定する。ホスト媒体におけるそれぞれの化合物の溶解度が10%未満の場合、少なくとも化合物の特性を決定できるのに十分に得られる媒体が安定するまで、化合物の濃度を1/2ずつ低下する。しかしながら、好ましくは、結果の有意性を可能な限り高く保つために、濃度は少なくとも5%に保つ。試験混合物の容量は、ホメオトロピック配向を有するおよびホモジニアス配向を有するセルの両方で決定する。両方のタイプのセルのセルギャップは、約20μmである。印加電圧は1kHzの周波数を有する矩形波で、二乗平均平方根値は0.5V〜1.0Vであるが、常にそれぞれの試験混合物の容量閾値より低く選択する。
本発明の好ましい実施形態において、利用する基板は実質的に透明である。本発明の目的に適した透明材料は、当業者に一般に既知である。本発明によれば基板はとりわけ、それぞれ互いに独立にポリマー材料、金属酸化物、例えばITO、およびガラスまたは石英板のそれぞれから独立して、好ましくはそれぞれ互いに独立に別のガラスおよび/またはITO、特にガラス/ガラスから成ってよい。
sin2(π・d・Δn/λ)=1 (7)
式中
dは、セルギャップであり、および
λは、光の波長である。
R11およびR12、R21およびR22、およびR31およびR32は、それぞれ独立に、H、F、Cl、CN、NCSまたは1〜25個のC原子を有する直鎖状もしくは分岐状のアルキル基(該アルキル基は無置換でも、ハロゲンもしくはCNで一置換または多置換されていてもよく、1個以上の隣接していないCH2基は、それぞれの出現で互いに独立に酸素原子が互いに直接連結しないようにして、−O−、−S−、−NH−、−N(CH3)−、−CO−、−COO−、−OCO−、−O−CO−O−、−S−CO−、−CO−S−、−CH=CH−、−CH=CF−、−CF=CF−または−C≡C−で置き換えられていることも可能である。)であり、
MG11およびMG12、MG21およびMG22、およびMG31およびMG32は、それぞれ独立に、メソゲン基であり、
Sp1、Sp2およびSp3は、それぞれ独立に、5〜40個のC原子を含むスペーサー基(ただし、また、1個以上の隣接していないCH2基は、Sp1のO−MG11および/またはO−MG12への結合、Sp2のMG21および/またはMG22への結合およびSp3のX31および/またはX32へ結合するCH2基を除き、−O−、−S−、−NH−、−N(CH3)−、−CO−、−O−CO−、−S−CO−、−O−COO−、−CO−S−、−CO−O−、−CH(ハロゲン)−、−CH(CN)−、−CH=CH−または−C≡C−で置き換えられていてもよいが、2個のO原子は互いに隣接せず、2個の−CH=CH−基は互いに隣接せず、−O−CO−、−S−CO−、−O−COO−、−CO−S−、−CO−O−および−CH=CH−から選択される2個の基は互いに隣接しない。)
X31およびX32は、互いに独立に、−CO−O−、−O−CO−、−CH=CH−、−C≡C−または−S−から選択される連結基であり、あるいは、それらの1つが−O−または単結合のいずれかであってもよく、さらにあるいは、それらの1つが、−O−であり他方が、単結合であってもよい。
nは、1〜15の整数、最も好ましくは奇数であり、1個以上の−CH2−基は、−CO−によって置き換えられてもよい、
式A−I〜A−IIIの化合物が好ましくは用いられる。
式中、
Z1は、−COO−、−OCO−、−O−CO−O−、−OCH2−、−CH2O−、−CH2CH2−、−(CH2)4−、−CF2CF2−、−CH=CH−、−CF=CF−、−CH=CH−COO−、−OCO−CH=CH−、−C≡C−または単結合であり、
A11およびA12は、それぞれの出現で、それぞれ独立に、1,4−フェニレン(ただし加えて、1個以上のCH基はNで置き換えられていてもよい。)、トランス−1,4−シクロヘキシレン(ただし加えて、1個または2個の隣接していないCH2基はOおよび/またはSで置き換えられていてもよい。)、1,4−シクロヘキセニレン、1,4−ビシクロ−(2,2,2)−オクチレン、ピペリジン−1,4−ジイル、ナフタレン−2,6−ジイル、デカヒドロ−ナフタレン−2,6−ジイル、1,2,3,4−テトラヒドロ−ナフタレン−2,6−ジイル、シクロブタン−1,3−ジイル、スピロ[3.3]ヘプタン−2,6−ジイルまたはジスピロ[3.1.3.1]デカン−2,8−ジイルであり、これら全ての基は無置換でも、F、Cl、CNまたは1〜7個のC原子を有するアルキル、アルコキシ、アルキルカルボニルもしくはアルコキシカルボニル基で一置換、二置換、三置換または四置換されていることも可能であり、ただし、1個以上のH原子はFまたはClで置換されていてもよく、
mは、0、1、2または3である、式A−Iの化合物が好ましくは用いられる。
式中、
Z2は、−COO−、−OCO−、−O−CO−O−、−OCH2−、−CH2O−、−CH2CH2−、−(CH2)4−、−CF2CF2−、−CH=CH−、−CF=CF−、−CH=CH−COO−、−OCO−CH=CH−、−C≡C−または単結合であり、
A21およびA22は、それぞれの出現で、それぞれ独立に、1,4−フェニレン(ただし加えて、1個以上のCH基はNで置き換えられていてもよい。)、トランス−1,4−シクロヘキシレン(ただし加えて、1個または2個の隣接していないCH2基はOおよび/またはSで置き換えられていてもよい。)、1,4−シクロヘキセニレン、1,4−ビシクロ−(2,2,2)−オクチレン、ピペリジン−1,4−ジイル、ナフタレン−2,6−ジイル、デカヒドロ−ナフタレン−2,6−ジイル、1,2,3,4−テトラヒドロ−ナフタレン−2,6−ジイル、シクロブタン−1,3−ジイル、スピロ[3.3]ヘプタン−2,6−ジイルまたはジスピロ[3.1.3.1]デカン−2,8−ジイルであり、これら全ての基は無置換でも、F、Cl、CNまたは1〜7個のC原子を有するアルキル、アルコキシ、アルキルカルボニルもしくはアルコキシカルボニル基で一置換、二置換、三置換または四置換されていることも可能であり、ただし、1個以上のH原子はFまたはClで置換されていてもよく、
mは、0、1、2または3である、式A−IIの化合物が好ましくは用いられる。
式中、
Z3は、−COO−、−OCO−、−O−CO−O−、−OCH2−、−CH2O−、−CH2CH2−、−(CH2)4−、−CF2CF2−、−CH=CH−、−CF=CF−、−CH=CH−COO−、−OCO−CH=CH−、−C≡C−または単結合であり、
A31およびA32は、それぞれの出現で、それぞれ独立に、1,4−フェニレン(ただし加えて、1個以上のCH基はNで置き換えられていてもよい。)、トランス−1,4−シクロヘキシレン(ただし加えて、1個または2個の隣接していないCH2基はOおよび/またはSで置き換えられていてもよい。)、1,4−シクロヘキセニレン、1,4−ビシクロ−(2,2,2)−オクチレン、ピペリジン−1,4−ジイル、ナフタレン−2,6−ジイル、デカヒドロ−ナフタレン−2,6−ジイル、1,2,3,4−テトラヒドロ−ナフタレン−2,6−ジイル、シクロブタン−1,3−ジイル、スピロ[3.3]ヘプタン−2,6−ジイルまたはジスピロ[3.1.3.1]デカン−2,8−ジイルであり、これら全ての基は無置換でも、F、Cl、CNまたは1〜7個のC原子を有するアルキル、アルコキシ、アルキルカルボニルもしくはアルコキシカルボニル基で一置換、二置換、三置換または四置換されていることも可能であり、ただし、1個以上のH原子はFまたはClで置換されていてもよく、
mは、0、1、2または3である、式A−IIIの化合物が最も好ましくは用いられる。
対照な化合物:
式A−I〜A−IIIのビメソゲン化合物は巨視的に均一な方向に容易に配向でき、適用された液晶媒体において高い値の弾性定数k11および高いフレキソ係数eに至るため、フレキソエレクトリック液晶光変調素子において特に有用である。
LB11〜LB31は、独立にHまたはFであり、好ましくは一方がHで他方がHまたはFであり、最も好ましくは両方がHであるか両方がFであり、
RB1、RB21およびRB22、およびRB31およびRB32は、それぞれ独立に、H、F、Cl、CN、NCSまたは1〜25個のC原子を有する直鎖状もしくは分岐状のアルキル基であり、該アルキル基は無置換でも、ハロゲンもしくはCNで一置換または多置換されていてもよく、1個以上の隣接していないCH2基は、それぞれの出現で互いに独立に酸素原子が互いに直接連結しないようにして、−O−、−S−、−NH−、−N(CH3)−、−CO−、−COO−、−OCO−、−O−CO−O−、−S−CO−、−CO−S−、−CH=CH−、−CH=CF−、−CF=CF−または−C≡C−で置き換えられていることも可能であり、
XB1は、F、Cl、CN、NCSであり、好ましくは、CNであり、
ZB1、ZB2およびZB3は、それぞれの出現で独立に、−CH2−CH2−、−CO−O−、−O−CO−、−CF2O−、−OCF2−、−CH=CH−または単結合であり、好ましくは、−CH2−CH2−、−CO−O−、−CH=CH−または単結合であり、さらに好ましくは、−CH2−CH2−または単結合であり、さらに好ましくは、1つの化合物に存在する基の1つが、−CH2−CH2−であり、他が、単結合であり、最も好ましくは、すべてが単結合であり、
パラメーターは、上に与えられる意味を有し、好ましくは、RB1は、12個までのC原子を有する、アルキル、アルコキシ、アルケニルまたはアルケニルオキシであり、
LB1およびLB2は、それぞれ独立に、HまたはFであり、好ましくは、一つがHであり、他方が、HまたはFであり、最も好ましくは、共にHである。
パラメーターは、上に与えられる意味を有し、好ましくは、RB21およびRB22は、それぞれ独立に、12個までのC原子を有する、アルキル、アルコキシ、アルケニルまたはアルケニルオキシであり、さらに好ましくは、RB21は、アルキルおよびRB22は、アルキル、アルコキシまたはアルケニルであり、および式B−II−1中、最も好ましくは、アルケニル、特にビニルまたは1−プロペニルであり、式B−II−2中、最も好ましくは、アルキルである。
パラメーターは、上に与えられる意味を有し、好ましくは、RB31およびRB32は、それぞれ独立に、12個までのC原子を有する、アルキル、アルコキシ、アルケニルまたはアルケニルオキシであり、さらに好ましくは、RB31は、アルキルおよびRB32は、アルキルまたはアルコキシであり、最も好ましくは、アルコキシであり、
LB22およびLB31、LB32は、それぞれ独立に、HまたはFであり、好ましくは、一つがFであり、他方が、HまたはFであり、最も好ましくは、共にFである。
Pは、重合性基であり、
Spは、スペーサー基または単結合であり、
MGは、好ましくは式Mから選択される棒状のメソゲン基であり、
Mは、−(AD21−ZD21)k−AD22−(ZD22−AD23)l−であり、
AD21〜AD23は、それぞれの出現で互いに独立に、1個以上の同一または異なる基Lで置換されていてもよいアリール、ヘテロアリール、複素環式または脂環式基、好ましくは、1個以上の同一または異なる基Lで置換されていてもよい1,4−シクロヘキシレンまたは1,4−フェニレン、1,4 ピリジン、1,4−ピリミジン、2,5−チオフェン、2,6−ジチエノ[3,2−b:2’,3’−d]チオフェン、2,7−フッ素、2,6−ナフタレン、2,7−フェナントレンであり、
ZD21およびZD22は、それぞれの出現でそれぞれ互いに独立に、−O−、−S−、−CO−、−COO−、−OCO−、−S−CO−、−CO−S−、−O−COO−、−CO−NR01−、−NR01−CO−、−NR01−CO−NR02、−NR01−CO−O−、−O−CO−NR01−、−OCH2−、−CH2O−、−SCH2−、−CH2S−、−CF2O−、−OCF2−、−CF2S−、−SCF2−、−CH2CH2−、−(CH2)4−、−CF2CH2−、−CH2CF2−、−CF2CF2−、−CH=N−、−N=CH−、−N=N−、−CH=CR01−、−CY01=CY02−、−C≡C−、−CH=CH−COO−、−OCO−CH=CH−または単結合、好ましくは、−COO−、−OCO−、−CO−O−、−O−CO−、−OCH2−、−CH2O−、−、−CH2CH2−、−(CH2)4−、−CF2CH2−、−CH2CF2−、−CF2CF2−、−C≡C−、−CH=CH−COO−、−OCO−CH=CH−または単結合であり、
Lは、それぞれの出現で、それぞれ互いに独立に、F、Clまたは1〜20個のC原子のフッ素化されてよいアルキル、アルコキシ、チオアルキル、アルキルカルボニル、アルコキシカルボニル、アルキルカルボニルオキシもしくはアルコキシカルボニルオキシであり、
R0は、H、1〜20個のC原子、より好ましくは1〜15個のC原子を有し、フッ素化されていてもよいアルキル、アルコキシ、チオアルキル、アルキルカルボニル、アルコキシカルボニル、アルキルカルボニルオキシもしくはアルコキシカルボニルオキシであるか、またはYD0もしくはP−Sp−であり、
YD0は、F、Cl、CN、NO2、OCH3、OCN、SCN、1〜4個のC原子を有し、フッ素化されていてもよいアルキルカルボニル、アルコキシカルボニル、アルキルカルボニルオキシもしくはアルコキシカルボニルオキシ、または1〜4個のC原子を有する一フッ素化、オリゴフッ素化もしくは多フッ素化されたアルキルもしくはアルコキシ、好ましくは、F、Cl、CN、NO2、OCH3または1〜4個のC原子を有する一フッ素化、オリゴフッ素化もしくは多フッ素化されたアルキルもしくはアルコキシであり、
Y01およびY02は、それぞれ互いに独立に、H、F、ClまたはCNを表し、
R01およびR02は、それぞれ独立に、R0において上に定義した意味を有し、および
kおよびlは、それぞれ独立に、0、1、2、3または4、好ましくは、0、1または2、最も好ましくは1である。
alkylは、単結合または1〜12個のC原子を有する直鎖状もしくは分枝状アルキレンを表し、ただし、1個以上の隣接していないCH2基は、それぞれ互いに独立に、Oおよび/またはS原子が互いに直接連結しないようにして、−C(Rx)=C(Rx)−、−C≡C−、−N(Rx)−、−O−、−S−、−CO−、−CO−O−、−O−CO−、−O−CO−O−で置き換えられていてもよく、ただし加えて、1個以上のH原子は、F、ClまたはCNで置き換えられていてもよく、ただし、Rxは上述の意味を有し、好ましくは上に定義したR0を現し、
aaおよびbbは、それぞれ互いに独立に、0、1、2、3、4、5または6を表し、
Xは、X’に示した意味の1つを有し、ならびに
P1〜5は、それぞれ互いに独立に、Pについて上に示した意味の1つを有する。
Sp’は、1〜20個、好ましくは1〜12個のC原子を有するアルキレンを表し、該アルキレンは、F、Cl、Br、IまたはCNで一置換または多置換されていてもよく、ただし加えて、1個以上の隣接していないCH2基は、それぞれ互いに独立に、Oおよび/またはS原子が互いに直接連結しないようにして、−O−、−S−、−NH−、−NRx−、−SiRxRxx−、−CO−、−COO−、−OCO−、−OCO−O−、−S−CO−、−CO−S−、−NRx−CO−O−、−O−CO−NRx−、−NRx−CO−NRx−、−CH=CH−または−C≡C−で置き換えられていてもよく、
X’は、−O−、−S−、−CO−、−COO−、−OCO−、−O−COO−、−CO−NRx−、−NRx−CO−、−NRx−CO−NRx−、−OCH2−、−CH2O−、−SCH2−、−CH2S−、−CF2O−、−OCF2−、−CF2S−、−SCF2−、−CF2CH2−、−CH2CF2−、−CF2CF2−、−CH=N−、−N=CH−、−N=N−、−CH=CRx−、−CY2=CY3−、−C≡C−、−CH=CH−COO−、−OCO−CH=CH−または単結合を表し、
RxおよびRxxは、それぞれ互いに独立に、Hまたは1〜12個のC原子を有するアルキルを表し、および
Y2およびY3は、それぞれ互いに独立に、H、F、ClまたはCNを表し、
X’は、好ましくは、−O−、−S−、−CO−、−COO−、−OCO−、−O−COO−、−CO−NRx−、−NRx−CO−、−NRx−CO−NRx−または単結合である。
P0は、複数出現する場合は互いに独立に、重合性基、好ましくは、アクリル、メタクリル、オキセタン、エポキシ、ビニル、ビニルオキシ、プロペニルエーテルまたはスチレン基であり、
A0は、複数出現する場合は互いに独立に、1個、2個、3個もしくは4個の基Lで置換されていてもよい1,4−フェニレン、またはトランス−1,4−シクロヘキシレンであり、
Z0は、複数出現する場合は互いに独立に、−COO−、−OCO−、−CH2CH2−、−C≡C−、−CH=CH−、−CH=CH−COO−、−OCO−CH=CH−または単結合であり、
rは、0、1、2、3または4、好ましくは、0、1または2であり、
tは、複数出現する場合は互いに独立に、0、1、2または3であり、
uおよびvは、それぞれ互いに独立に、0、1または2であり、
wは、0または1であり、
xおよびyは、それぞれ互いに独立に、0、または1〜12の同一もしくは異なる整数であり、
zは0または1であり、隣接するxまたはyが0の場合、zは0であり、
ただし加えて、ベンゼンおよびナフタレン環を1個以上の同一または異なる基Lで追加して置換でき、パラメータR0、Y0、R01、R02およびLは、式Dで上に与えるのと同一の意味を有する。
a)少なくとも一方の基板が光に対して透明であり対向する基板の両側に電極が設けられた2枚の基板の間に、1種類以上のビメソゲン化合物、1種類以上のキラル化合物および1種類以上の重合性化合物を含む液晶媒体の層を提供する工程と、
b)液晶媒体をその等方相に加熱する工程と、
c)スイッチ状態間で液晶媒体をスイッチするのに十分な電圧を電極間に印加しながら、液晶媒体を透明点より10°以下まで冷却する工程と、
c)電極間に電圧を印加しながら、重合性化合物の光重合を誘発する光放射に液晶媒体の前記層を曝露する工程と
を含む方法に関する。
以下の液晶ホスト混合物を調製する。
全面ITOコート基板(40nmのITO電極、600nmのSiNx誘電体層)をポリイミド溶液(AL−3046、JSRコーポレーション社)でスピンコートし、180℃のオーブン内で90分間乾燥する。厚さ約50nmの配向層をレーヨン布でラビングする。また全面ITOコート基板をAL−3046(第2基板アレイ)でもコートし、PIの表面ラビングし、UV硬化性接着剤(3μmのスペーサで装填)を使用して2枚の基板アレイを組み立て、両方のラビング方向を逆平行状態に配置する。ガラススクライブホイールでガラス表面をスクライブして、組み立てた一組の基板アレイから単一のセルを切り出す。次いで得られた試験用セルを、毛管作用で混合物(M1)で充填する。
上記の通り、混合物M−1を試験用セル内に導入する。
上記の通り、混合物M−1を試験用セル内に導入する。
上記の通り、混合物M−1を試験用セル内に導入する。
上記の通り、混合物M−1を試験用セル内に導入する。
上記の通り、混合物M−1を試験用セル内に導入する。
Claims (6)
- 本発明は光変調素子を調製する方法であって、
a)少なくとも一方の基板が光に対して透明であり対向する基板の両側に電極が設けられた2枚の基板の間に、1種類以上のビメソゲン化合物、1種類以上のキラル化合物および1種類以上の重合性化合物を含む液晶媒体の層を提供する工程と、
b)液晶媒体をその等方相に加熱する工程と、
c)スイッチ状態間で液晶媒体をスイッチするのに十分な電圧を電極間に印加しながら、液晶媒体を透明点より10°以下まで冷却する工程と、
d)電極間に電圧を印加しながら、重合性化合物の光重合を誘発する光放射に液晶媒体の前記層を曝露する工程と
を含む方法に関する。 - 工程b)においてLC媒体は、透明化より1℃以上高く加熱されることを特徴とする請求項1に記載の方法。
- LC媒体は、透明点より1℃以下低く冷却されることを特徴とする請求項1または2に記載の方法。
- 工程c)において印加する電圧は、工程d)におけるよりも高いことを特徴とする請求項1〜3のいずれか1項に記載の方法。
- 工程c)における電圧は、5〜30Vであることを特徴とする請求項1〜4のいずれか1項に記載の方法。
- LC媒体中の重合性化合物の割合は0.1〜20%であり、LC媒体中の非重合性液晶分子の割合が80〜99.9%であることを特徴とする請求項1〜5のいずれか1項に記載の方法。
Applications Claiming Priority (5)
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EP15001978 | 2015-07-02 | ||
EP15001978.4 | 2015-07-02 | ||
EP15001980.0 | 2015-07-02 | ||
EP15001980 | 2015-07-02 | ||
PCT/EP2016/000947 WO2017001041A1 (en) | 2015-07-02 | 2016-06-09 | Process of preparing a light modulation element |
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JP2018524634A true JP2018524634A (ja) | 2018-08-30 |
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US (1) | US10669484B2 (ja) |
EP (1) | EP3317722A1 (ja) |
JP (1) | JP2018524634A (ja) |
KR (1) | KR20180022970A (ja) |
CN (1) | CN107810442A (ja) |
TW (1) | TW201716846A (ja) |
WO (1) | WO2017001041A1 (ja) |
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EP3720924A1 (en) | 2017-12-06 | 2020-10-14 | Merck Patent GmbH | Liquid-crystalline medium for use in a switching element |
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-
2016
- 2016-06-09 US US15/741,383 patent/US10669484B2/en not_active Expired - Fee Related
- 2016-06-09 JP JP2017567666A patent/JP2018524634A/ja active Pending
- 2016-06-09 CN CN201680038524.7A patent/CN107810442A/zh active Pending
- 2016-06-09 WO PCT/EP2016/000947 patent/WO2017001041A1/en active Application Filing
- 2016-06-09 EP EP16727957.9A patent/EP3317722A1/en not_active Withdrawn
- 2016-06-09 KR KR1020187003108A patent/KR20180022970A/ko unknown
- 2016-07-01 TW TW105121037A patent/TW201716846A/zh unknown
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EP3317722A1 (en) | 2018-05-09 |
US10669484B2 (en) | 2020-06-02 |
US20180187081A1 (en) | 2018-07-05 |
CN107810442A (zh) | 2018-03-16 |
WO2017001041A1 (en) | 2017-01-05 |
TW201716846A (zh) | 2017-05-16 |
KR20180022970A (ko) | 2018-03-06 |
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