TWI826425B - 液晶組合物及液晶顯示元件、液晶顯示器 - Google Patents
液晶組合物及液晶顯示元件、液晶顯示器 Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 114
- 239000000203 mixture Substances 0.000 title claims abstract description 69
- 150000001875 compounds Chemical class 0.000 claims abstract description 55
- 125000004432 carbon atom Chemical group C* 0.000 claims description 75
- 125000003545 alkoxy group Chemical group 0.000 claims description 23
- 125000000217 alkyl group Chemical group 0.000 claims description 21
- 239000011159 matrix material Substances 0.000 claims description 16
- 125000003342 alkenyl group Chemical group 0.000 claims description 11
- 125000004955 1,4-cyclohexylene group Chemical group [H]C1([H])C([H])([H])C([H])([*:1])C([H])([H])C([H])([H])C1([H])[*:2] 0.000 claims description 5
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 claims description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 5
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- 101001053401 Arabidopsis thaliana Acid beta-fructofuranosidase 3, vacuolar Proteins 0.000 claims description 2
- 230000036632 reaction speed Effects 0.000 abstract description 4
- 230000000875 corresponding effect Effects 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 18
- 230000004044 response Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 125000003302 alkenyloxy group Chemical group 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- -1 methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy Chemical group 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 3
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
本揭露涉及液晶組合物,包含該液晶組合物的液晶顯示元件、液晶顯示器,屬於液晶顯示領域,所述液晶組合物包含式I所示的化合物、式II所示的化合物、一種或多種式III所示的化合物、以及至少一種可聚合化合物,該液晶組合物兼具低的旋轉黏度、較大的折射率、快速的反應速度。
Description
本揭露屬於液晶顯示領域,更具體地,涉及液晶組合物及包含該液晶組合物的液晶顯示元件、液晶顯示器。
早期商用的TFT-LCD產品基本採用了TN顯示模式,其最大問題是視角窄。隨著產品尺寸的增加,特別是在TV領域的應用,具有廣視野角特點的IPS顯示模式、VA顯示模式依次被開發出來並加以應用,尤其是基於VA顯示模式的改進,分別先後在各大公司得到了突破性的發展,這主要取決於VA模式本身所具有的寬視野角、高對比度和無需摩擦配向等優勢,再有就是,VA模式顯示的對比度對液晶的光學各向異性(△n)、液晶盒的厚度(d)和入射光的波長(λ)依賴度較小,必將使得VA這種模式成為極具前景的顯示技術。
但是,VA模式等的顯示元件所用的液晶介質,本身並不完美,與正介電各向異性的顯示元件相比,其存在介電偏小,反應時間比較慢,驅動電壓比較高等缺點,並且會更容易出現顯示不良、殘影等問題。
目前,應用於顯示元件的反應速度優良、各種顯示不良得到改善的液晶組合物仍然是人們期望獲得的。
為了解決現有技術中存在的問題,本發明人等進行了深入研究後驚奇地發現,藉由使用含有後述的式I所示化合物、式II所示化合物以及式III所示化合物的組合的液晶組合物,在應用於液晶顯示元件中時,表現出快速的反應速度,從而完成了本揭露。
本揭露的第一個目的在於提供一種液晶組合物,該液晶組合物具有低的旋轉黏度、快速的反應速度。
本揭露的第二個目的在於提供一種液晶顯示元件,其含有本揭露的液晶組合物。該液晶顯示元件具有快速的反應速度。
本揭露的第三個目的還在於提供一種液晶顯示器,其含有本揭露的液晶組合物。該液晶顯示器具有快速的反應速度。
為達到上述目的,本揭露採用下述技術方案:本揭露提供液晶組合物,其包含式I所示的化合物、式II所示的化合物、一種或多種式III所示的化合物,以及,至少一種可聚合化合物:
其中:R1、R2各自獨立地表示碳原子數為1-10的烷氧基。
本揭露的液晶組合物中,對於前述的可聚合化合物沒有任何限定,本領域中具有通常知識者能夠根據本領域的通常知識來選擇適宜的可聚合化合物。
本揭露還提供液晶顯示元件,其包含本揭露的液晶組合物,所述液晶顯示元件為主動矩陣尋址顯示元件或者被動矩陣尋址顯示元件。
本揭露還提供液晶顯示器,其包含本揭露的液晶組合物,所述液晶顯示器為主動矩陣尋址顯示器或者被動矩陣尋址顯示器。
[液晶組合物]
本揭露的液晶組合物包含式I所示的化合物、式II所示的化合物、一種或多種式III所示的化合物、以及至少一種可聚合化合物。
作為前述的碳原子數為1-10的烷氧基,可以列舉出例如,甲氧基、乙氧基、正丙氧基、異丙氧基、正丁氧基、異丁氧基、戊氧基、己氧基、庚氧基、辛氧基、壬氧基、癸氧基等。
本揭露的液晶組合物中,較佳地,還包含一種或多種式IV所示化合物:
其中,R3、R4表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、碳原子數為3-8的鏈烯氧基或氟取代的碳原子數為3-8的鏈烯氧基;並且R3、R4所示基團中任意一個或多個不相連的CH2任選被環戊基、環丁基或環丙基取代;Z1、Z2各自獨立地表示單鍵、-CH2CH2-或-CH2O-;
、各自獨立地表示1,4-亞環己基、1,4-亞環己
烯基、1,4-亞苯基或氟代1,4-亞苯基;m、n各自獨立地表示0、1或2且m+n2;
且當m+n=1、Z1、Z2為單鍵、或表示1,4-亞苯
基時,R3、R4不同時表示碳原子數為1-10的烷氧基。
本揭露的液晶組合物中,較佳地,前述IV所示的化合物選自下述式IV-1至IV-14所示的化合物組成的群組:
其中:R31表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、或者碳原子數為3-8的鏈烯氧基或氟取代的碳原子數為3-8的鏈烯氧基;R41表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、或者碳原子數為3-8的鏈烯氧基;並且R31、R41所示基團中任意一個或多個不相連的CH2任選被環戊基、環丁基或環丙基取代。
本揭露的液晶組合物中,較佳地,以可聚合化合物之外的成分的總和為100質量%,前述式I所示的化合物的總質量含量為1-47%;前述式II所示的化合物的總質量含量為1-25%;前述式III所示的化合物的總質量含量為1-35%;可聚合化合物在液晶總質量%基礎上進行添加,前述可聚合化合物的添加量為0.01-1%,較佳為0.03-0.4%。
其中,
R5、R6表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、或者氟取代的碳原子數為2-10的鏈烯基;
、各自獨立地表示1,4-亞環己基、1,4-亞環己烯基或1,4-
亞苯基;且、同時表示1,4-亞環己基,R5、R6中的一者表示丙基時,
R5、R6中的另一者不表示乙烯基。
其中,R5、R6表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、或者氟取代的碳原子數為2-10的鏈烯基;式V-1中,R5、R6中的一者表示丙基時,R5、R6中的另一者不表示乙烯基。
其中,
R71表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、或者乙烯基;R72、R73、R8表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、或者氟取代的碳原子數為2-10的鏈烯基。
其中,R9表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、或者氟取代的碳原子數為1-10的烷氧基,這些基團中任意一個或多個不相連的CH2任選被環戊基、環丁基或環丙基取代;R10表示原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、或者氟取代的碳原子數為1-10的烷氧基;X表示O或S。
[液晶顯示元件]
本揭露的液晶顯示元件包含本揭露的液晶組合物,所述液晶顯示元件為主動矩陣顯示元件或被動矩陣顯示元件。
可選的,所述液晶顯示元件可以為主動矩陣液晶顯示元件。
可選的,所述主動矩陣顯示元件可以為例如PSVA-TFT液晶顯示元件。
包含本揭露的液晶組合物的液晶顯示元件具有較快的反應速度、較低的盒厚。
[液晶顯示器]
本揭露的液晶顯示器包含本揭露的液晶組合物,所述液晶顯示器為主動矩陣顯示器或被動矩陣顯示器。
可選的,所述液晶顯示器可以為主動矩陣液晶顯示器。
可選的,所述主動矩陣顯示器可以為例如PSVA-TFT液晶顯示器。
包含本揭露的液晶組合物的液晶顯示器具有較快的反應速度、較低的盒厚。
實施例
為了更清楚地說明本揭露,下面結合較佳實施例對本揭露做進一步的說明。本領域中具有通常知識者應當理解,下面所具體描述的內容是說明性的而非限制性的,不應以此限制本揭露的保護範圍。
本說明書中,如無特殊說明,百分比均是指質量百分比,溫度為攝氏度(℃),其他符號的具體意義及測試條件如下:Cp表示液晶清亮點(℃),DSC定量法測試;
△n表示光學各向異性,no為尋常光的折射率,ne為非尋常光的折射率,測試條件為25±2℃,589nm,阿貝折射儀測試;△ε表示介電各向異性,△ε=ε∥-ε⊥,其中,ε∥為平行於分子軸的介電常數,ε⊥為垂直於分子軸的介電常數,測試條件為25±0.5℃,20微米平行盒,INSTEC:ALCT-IR1測試;γ1表示旋轉黏度(mPa.s),測試條件為25±0.5℃,20微米平行盒,INSTEC:ALCT-IR1測試;K11為扭曲彈性常數,K33為展曲彈性常數,測試條件為:25℃、INSTEC:ALCT-IR1、18微米垂直盒;液晶組合物的製備方法如下:將各液晶單體按照一定配比稱量後放入不銹鋼燒杯中,將裝有各液晶單體的不銹鋼燒杯置於磁力攪拌儀器上加熱融化,待不銹鋼燒杯中的液晶單體大部份融化後,往不銹鋼燒杯中加入磁力轉子,將混合物攪拌均勻,冷卻到室溫後即得液晶組合物。
本揭露實施例液晶單體結構用代碼表示,液晶環結構、端基、連接基團的代碼表示方法見下表1、表2。
舉例:
,其代碼為CC-Cp-V1;
,其代碼為CPY-2-O2;
,其代碼為CCY-3-O2;
,其代碼為COY-3-O2;
,其代碼為CCOY-3-O2;
,其代碼為Sb-Cp1O-O4;
,其代碼為Sc-Cp1O-O4。
實施例1
液晶組合物的配方及相應的性能如下表3所示。
對比例1
液晶組合物的配方及相應的性能如下表4所示。
將實施例1中的CC-3-V替換為CC-5-V作為對比例1。與對比例1相比,實施例1在常溫沒有晶體析出,介電、折射率、K值性能差異較小,但旋轉黏度γ1較小,γ1/K33較小,從而反應較快。由此可知,本揭露的液晶組合物具有良好的低溫互溶性、快速的反應速度。
對比例2
液晶組合物的配方及相應的性能如下表5所示。
將實施例1中的CCP-V2-1替換為CCP-3-O1作為對比例2。實施例1與對比例2相比,常溫沒有晶體析出,介電、折射率、K值性能差異較小,但旋轉黏度γ1較小,γ1/K33較小,從而反應較快。由此可知,本揭露的液晶組合物具有良好的低溫互溶性、快速的反應速度。
對比例3
液晶組合物的配方及相應的性能如下表6所示。
將實施例1中的PY-2O-O2、PY-2O-O4、PY-1O-O2替換為PY-3-O2、PY-2-O4、PY-1-O2作為對比例3,實施例1與對比例3相比,實施例1具有大的介電、高的清亮點以及大的折射率。由此可知,本揭露的液晶組合物能夠用於開發低盒厚、快速的反應速度的液晶組合物。
實施例2
液晶組合物的配方及相應的性能如下表7所示。
實施例3
液晶組合物的配方及相應的性能如下表8所示。
實施例4
液晶組合物的配方及相應的性能如下表9所示。
實施例5
液晶組合物的配方及相應的性能如下表10所示。
實施例6
液晶組合物的配方及相應的性能如下表11所示。
實施例7
液晶組合物的配方及相應的性能如下表12所示。
實施例8
液晶組合物的配方及相應的性能如下表13所示。
對比例4
液晶組合物的配方及相應的性能如下表14所示。
將實施例8中的CCP-V2-1替換為CCP-3-1作為對比例4。實施例8與對比例4相比,介電、折射率、清亮點及K33性能差異較小,但是實施例8的γ1較小,γ1/K33較小,反應較快。由此可知,本揭露的液晶組合物具有快速反應的優勢,且在用於ODF液晶顯示元件的制程時液晶顯示元件無不良顯示。
實施例9
液晶組合物的配方及相應的性能如下表15所示。
實施例10
液晶組合物的配方及相應的性能如下表16所示。
實施例11
液晶組合物的配方及相應的性能如下表17所示。
實施例12
液晶組合物的配方及相應的性能如下表18所示。
實施例13
液晶組合物的配方及相應的性能如下表19所示。
對比例5
液晶組合物的配方及相應的性能如下表20所示。
將實施例13中的CCP-V2-1替換為CCP-3-O1作為對比例5。實施例13與對比例5相比,介電、折射率、清亮點及K33性能差異較小,但是實施例13的γ1較小,γ1/K33較小,反應較快。由此可知,本揭露的液晶組合物具有快速反應的優勢。
實施例14
液晶組合物的配方及相應的性能如下表21所示。
實施例15
液晶組合物的配方及相應的性能如下表22所示。
對比例6
液晶組合物的配方及相應的性能如下表23所示。
將實施例15中的CC-3-V替換為CC-5-V作為對比例6。實施例15與對比例6相比,介電、折射率、清亮點及K33性能差異較小,但是實施例15的γ1較小,γ1/K33較小,反應較快。由此可知,本揭露的液晶組合物具有快速反應的優勢。
顯然,本揭露的上述實施例僅僅是為清楚地說明本揭露所作的舉例,而並非是對本揭露的實施方式的限定,對於所屬領域中具有通常知識者來說,在上述說明的基礎上還可以做出其它不同形式的變化或變動,這裡無法對
所有的實施方式予以窮舉,凡是屬於本揭露的技術方案所引伸出的顯而易見的變化或變動仍處於本揭露的保護範圍之列。
Claims (8)
- 一種液晶組合物,其包含:式I所示的化合物、式II所示的化合物、一種或兩種式III所示的化合物、一種或多種式IV-2、IV-5、IV-8所示化合物、一種或多種式VI-1、VI-2所示化合物、一種或多種式VII-10、VII-12所示化合物以及至少一種可聚合化合物,
- 一種液晶顯示元件,其包含如請求項1-6任一項所述的液晶組合物,該液晶顯示元件為主動矩陣尋址顯示元件或者被動矩陣尋址顯示元件。
- 一種液晶顯示器,其包含如請求項1-6任一項所述的液晶組合物,該液晶顯示器為主動矩陣尋址顯示器或者被動矩陣尋址顯示器。
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