TWI802817B - 一種液晶組合物及光電顯示器件 - Google Patents
一種液晶組合物及光電顯示器件 Download PDFInfo
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Abstract
本發明公開了一種液晶組合物及光電顯示器件,包括:占所述液晶組合物總重量1-30%的至少一種通式I的化合物,占所述液晶組合物總重量5-35%的至少一種通式II的化合物,占所述液晶組合物總重量10-50%的至少一種通式III的化合物;所述液晶組合物具有適當的清亮點、適當的光學各向異性、適當的介電各向異性,還具有較高的電壓保持率、較高的透過率、較好的抗高溫性能及更快的回應速度,該液晶組合物適用於VA、IPS和FFS等顯示模式。
Description
本發明屬於液晶材料技術領域,具體涉及一種液晶組合物及光電顯示器件。
液晶顯示器(LCD)用在許多領域中用以顯示資訊,主要用於直觀顯示器和投射類型的顯示器。LCD因其體積小、重量輕、功耗低且顯示品質優異而獲得了飛速發展,特別在可擕式電子資訊產品中獲得廣泛的應用。隨著用於可擕式電腦、辦公應用、視頻應用的液晶螢幕尺寸的增加,液晶顯示器能夠用於大螢幕顯示並最終替代陰極射線管(Cathode Ray Tube,CRT)。
目前,用於大多數顯示器的電光模式仍為扭轉向列(TN)模式及其各種變型。除此模式之外,已越來越多地使用超扭轉向列(STN)模式和光學補償彎曲(OCB)模式和電控雙折射(ECB)模式及其各種變型,例如,垂直配向向列(VAN)、圖案化ITO垂直配向向列(PVA)、聚合物穩定垂直配向向列(PSVA)模式和多域垂直配向向列(MVA)模式以及其他。所有這些模式分別對液晶層使用基本上垂直於基板的電場。除這些模式以外,也存在分別對液晶層使用基本上平行於基板的電場的電光模式,例如平面內切換型(短IPS)模式和邊緣場切換型(FFS)模式。尤其是後面提到的電光模式(其具有良好的視角特性和改進的回應時間)正越來越多地用於現代桌面監視器的LCD且甚至用於TV和多媒體應用的顯示器,並因此與TN-LCD競爭。
液晶(LC)材料廣泛用於液晶顯示器(LCD),特別是具有有源矩陣或無源矩陣定址以顯示資訊的電光顯示器中。在有源矩陣顯示器的情況下,單個圖元通常由集成的非線性有源元件,例如電晶體,例如薄膜電晶體(TFT)定址,而在無源矩陣顯示器的情況下,單個圖元通常由如現有技術中已知的多路傳輸方法定址。
液晶材料主要用作顯示器件中的電介質,通過施加電壓改變這類物質的光學性能。因此液晶材料必須具有良好的化學和熱穩定性,以及良好的對電場和電磁輻射的穩定性等。
相對於傳統的顯示器件和顯示材料,液晶顯示材料具有明顯的優點:驅動電壓低、功耗微小、可靠性高、顯示信息量大、彩色顯示、無閃爍、對人體無危害、生產過程自動化、成本低廉等。由於這些優點,液晶顯示技術對顯示顯像領域產生了深刻影響,促進了微電子技術和光電資訊技術的發展。液晶材料憑藉其良好的光學性能和光電效應,在諸多顯示場合獲得了廣泛應用,如可擕式電腦、辦公應用、視頻應用等。
目前LCD用液晶向著回應速度更快,信賴性更好的方向發展,而液晶組合物的高速回應特性來源於其組分的相應物理參數,如旋轉粘度、彈性常數等,在滿足回應速度更快的同時,一些性能例如低溫穩定性和信賴性又必須不被損害。然而,現有技術仍然未能有效解決這一技術問題。
這意味著,需要我們對液晶材料做進一步改進。從液晶材料的製備角度出發,液晶材料的各項性能是互相牽制影響的,某項性能指標的提高可能會使其他性能發生變化。因此,製備各方面性能都合適的液晶材料往往需要創造性勞動。
為解決現有技術中存在的技術問題,本發明提供一種液晶組合物及光電顯示器件,所述液晶組合物具有適當的清亮點、適當的光學各向異性、適當的介電各向異性,還具有較高的電壓保持率、較高的透過率、較好的抗高溫性能及更快的回應速度,適用於VA、IPS和FFS等顯示模式。
為達上述技術效果,本發明採用以下技術方案:
本發明目的之一在於提供一種液晶組合物,所述液晶組合物包括:
占所述液晶組合物總重量1-30%的至少一種通式Ⅰ的化合物;I
占所述液晶組合物總重量5-35%的至少一種通式Ⅱ的化合物;II
占所述液晶組合物總重量10-50%的至少一種通式Ⅲ的化合物;III
其中,R1
、R3
和R5
各自獨立地表示含有1-7個碳原子的烷基或烷氧基;R2
和R4
各自獨立地表示含有1-7個碳原子的烷基或烷氧基,含有2-7個碳原子的烯基或烯氧基;所述R1
、R2
、R3
、R4
和R5
表示的基團中任一個H可被鹵素取代、任一個-CH2
-可被環戊烷基、環丙烷基或環丁烷基取代;
L1
、L2
、L3
、L4
、L5
和L6
各自獨立地表示-F、-Cl、-CF3
、-OCF3
或-CH2
F;
環A1和環A2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、至少一個氫原子被鹵原子取代的1,4-亞苯基、或至少一個-CH2
-被-O-取代的1,4-亞環己基;
n表示0或1。
本發明中,含1~7個碳原子的烷基可以是碳原子數為1、2、3、4、5、6、7的直鏈或支鏈烷基;
含1~7個碳原子的烷氧基可以是碳原子數為1、2、3、4、5、6、7的直鏈或支鏈烷氧基;
含2~7個碳原子的烯基可以是碳原子數為2、3、4、5、6、7的直鏈或支鏈烯基;
含2~7個碳原子的烯氧基可以是碳原子數為2、3、4、5、6、7的直鏈或支鏈烯氧基。
在本發明的一些實施方案中,所述通式Ⅰ的化合物選自以下一種或多種化合物組成的組:Ⅰ-1;Ⅰ-2;Ⅰ-3;Ⅰ-4;或Ⅰ-5。
所述通式Ⅱ的化合物選自以下一種或多種化合物組成的組:Ⅱ-1;Ⅱ-2;Ⅱ-3;或Ⅱ-4;
其中,R2
表示含有1-7個碳原子的烷基或烷氧基、或含有2-7個碳原子的烯基;R3
’表示含有1-7個碳原子的烷基,m表示0、1或2。
所述通式Ⅲ的化合物選自以下一種或多種化合物組成的組:Ⅲ-1;Ⅲ-2;Ⅲ-3;Ⅲ-4;Ⅲ-5;或Ⅲ-6。
作為本發明優選的技術方案,所述液晶組合物包含占所述液晶組合物總重量5-25%的至少一種通式Ⅰ的化合物,占所述液晶組合物總重量5-30%的至少一種通式Ⅱ的化合物,占所述液晶組合物總重量15-50%的至少一種通式Ⅲ的化合物。
其中,式I所示化合物的質量分數可以是5%、8%、10%、12%、15%、18%、20%、22%或24%等,式II所示化合物的質量分數可以是8%、10%、12%、15%、18%、20%、22%、25%、26%、28%等,式III所示化合物的質量分數可以是15%、18%、20%、22%、25%、26%、28%、30%、33%、35%、38%、40%、43%、45%、48%等,但並不僅限於所列舉的數值,該數值範圍內其他未列舉的數值同樣適用。
作為本發明更優選的技術方案,所述液晶組合物包含占所述液晶組合物總重量10-25%的至少一種通式Ⅰ的化合物,占所述液晶組合物總重量10-26%的至少一種通式Ⅱ的化合物,占所述液晶組合物總重量15-45%的至少一種通式Ⅲ的化合物。
作為本發明的技術方案,所述液晶組合物,還包括:
占所述液晶組合物總重量10-45%的至少一種通式Ⅳ的化合物;Ⅳ
其中,R6
和R7
各自獨立地表示含有1-7個碳原子的烷基或烷氧基、或含有2-7個碳原子的烯基;
Z1
表示單鍵、-CH2
-CH2
-、-CH=CH-或-CH2
O-;
環A3表示1,4-亞環己基、1,4-亞環己烯基或1,4-亞苯基。
作為本發明優選的技術方案,所述通式Ⅳ的化合物占所述液晶組合物總重量20-45%,如22%、25%、28%、30%、35%、38%、40%或43%等,但並不僅限於所列舉的數值,該數值範圍內其他未列舉的數值同樣適用。
作為本發明更優選的技術方案,所述通式Ⅳ的化合物占所述液晶組合物總重量20-40%。
作為本發明的技術方案,所述液晶組合物,還包括:
占所述液晶組合物總重量0-20%的至少一種通式Ⅴ的化合物;Ⅴ
其中,R8
和R9
各自獨立地表示含有1-7個碳原子的烷基或烷氧基、含有2-7個碳原子的烯基。
作為本發明優選的技術方案,所述通式Ⅴ的化合物占所述液晶組合物總重量0~15%,如1%、2%、5%、8%、10%、12%或14%等,但並不僅限於所列舉的數值,該數值範圍內其他未列舉的數值同樣適用。
作為本發明更優選的技術方案,所述通式V的化合物占所述液晶組合物總重量0-10%。
在本發明的一些實施方案中,所述通式Ⅴ的化合物中R8
和R9
至少有一個是含有2-7個碳原子的烯基。
作為本發明的技術方案,所述液晶組合物,還包括:
占所述液晶組合物總重量0-5%的至少一種通式VI的化合物;VI
其中,R10
和R11
各自獨立地表示含有1-7個碳原子的烷基或烷氧基、含有2-7個碳原子的烯基或烯氧基;L7
和L8
各自獨立地表示-F、-Cl、-CF3
、-OCF3
或-CH2
F;
Z2
和Z3
各自獨立地表示單鍵、-CH2
CH2
-、-COO-、-CH2
O-或-CF2
O-,並且Z2
和Z3
中至少一個不為單鍵;
環A4和環A5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、至少一個氫原子被鹵原子取代的1,4-亞苯基、或至少一個-CH2
-被-O-取代的1,4-亞環己基;
m表示0或1。
在本發明的一些實施方案中,所述通式VI的化合物選自以下一種或多種化合物組成的組:VI-1;VI-2;VI-3;VI-4;VI-5;VI-6;VI-7;VI-8;VI-9;VI-10;VI-11;VI-12;VI-13;VI-14;或VI-15。
本發明的目的之二在於提供一種光電顯示器件,包括所述之液晶組合物。
有益效果:
相對於現有技術,本發明通過調配液晶組合物中各組分的類型及比例,使得本發明的液晶組合物具有適當的清亮點、適當的光學各向異性、適當的介電各向異性,還具有較高的電壓保持率、較高的透過率、較好的抗高溫性能及更快的回應速度,該液晶組合物適用於VA、IPS和FFS等顯示模式。
以下將結合具體實施方案來說明本發明。需要說明的是,下面的實施例為本發明的示例,僅用來說明本發明,而不用來限制本發明。在不偏離本發明主旨或範圍的情況下,可進行本發明構思內的其他組合和各種改良。
為便於表達,以下各實施例中,液晶組合物的基團結構用表1所列的代碼表示:
表1 液晶化合物的基團結構代碼
以如下結構式的化合物為例:
該結構式如用表1所列代碼表示,則可表達為:1VCPWO2,代碼中的1表示左端為-CH3
,2表示右端為-C2
H5
;代碼中的V表示-CH=CH-,C表示1,4-亞環己基;P表示1,4-亞苯基;W表示2,3-二氟-1,4-亞苯基, O表示-O-。
基團的單元結構 | 代碼 | 基團名稱 |
C | 1,4-亞環己基 | |
P | 1,4-亞苯基 | |
L | 1,4-亞環己烯 | |
W | 2,3-二氟-1,4亞苯基 | |
-CH2 CH2 - | 2 | 乙基橋鍵 |
-CF3 | CF3 | 三氟甲基 |
-OCF3 | OCF3 | 三氟甲氧基 |
-CH2 F | CH2F | 單氟甲基 |
-F | F | 氟取代基 |
-O- | O | 氧取代基 |
-CF2 O- | Q | 二氟醚基 |
-CH2 O- | 1O | 亞甲氧基 |
-COO- | E | 酯橋鍵 |
-Cn H2n+1 | n (n表示1-7的正整數) | 烷基 |
-CH=CH-或-CH=CH2 | V | 乙烯基 |
以下實施例中,測試專案的簡寫代號如下:
測試項目代號 | 含義 |
Δn: | 光學各向異性(589 nm,25℃) |
Δε: | 介電各向異性(1 KHz,25℃) |
Cp: | 清亮點(向列-各向同性相轉變溫度,℃) |
γ1: | 旋轉粘度(mPa.s,25℃) |
V90 | 飽和電壓(在90%相對透過率時的特徵電壓) |
Toff | 撤電時,從90%透過率降至10%透過率所需的時間(ms,25℃) |
T | 透過率(%,DMS 505測試儀,盒厚3.5 μm) |
VHR | 電壓保持率 |
Ion (初始) | 初始離子濃度(pC/cm2 ,60℃) |
Ion (高溫) | 高溫離子濃度(pC/cm2 ,150℃) |
ΔIon | 離子濃度差值(pC/cm2 ) |
其中,Cp(清亮點)是使用熔點儀定量法測試的;
Δn光學各向異性使用阿貝折光儀在鈉光燈(589nm)光源下、25℃測試得到;
介電各向異性,Δε=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:25±0.5℃,1kHz;測試盒為VA盒,盒厚6μm;
γ1(旋轉粘度)是使用INSTEC:ALCTIR1測試得到的,測試條件為25±0.5℃,20μm平行盒;
V90
(飽和電壓)是通過DMS505測試得到的,測試條件為25℃,方波,頻率為60 Hz,測試電壓範圍為0-10V;
Toff
是在撤電時,從90%透過率降至10%透過率所需的時間。測試盒為VA盒,盒厚3.5 μm;
T透過率是利用DMS 505測試調光器件在25℃下,測試電壓4V,頻率60Hz,方波得到的透過率。所述調光器件為盒厚3.5μm的VA型測試盒;
VHR電壓保持率測試使用TOYO 6254測試,測試條件為5V 6Hz,測試盒使用9μm VA Cell。
Ion
(初始)是使用TOYO 6254測試,測試條件為10V 0.01Hz,60℃,測試盒使用9μm VA Cell;Ion
(高溫)是在測得Ion
後,將測試盒置於150℃的恒溫環境中1h後,再次測得的離子濃度;ΔIon
= Ion
(高溫)-Ion
(初始)。
在以下的實施例中所採用的各成分,均可以通過公知的方法進行合成,或者通過商業途徑獲得。這些合成技術是常規的,所得到各液晶化合物經測試符合電子類化合物標準。
按照以下實施例規定的各液晶組合物的配比,製備液晶組合物。所述液晶組合物的製備是按照本領域的常規方法進行的,如採取加熱、超聲波、懸浮等方式按照規定比例混合制得。
對比例 1
按表2中所列的各化合物及重量百分數配製成對比例1的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表2液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 10 | Cp | 79.3 |
5CCWO2 | 5 | Δn | 0.1092 |
4CCWO2 | 6 | Δε | -4 |
2CCWO2 | 8 | VHR | 80% |
3PWO2 | 3.5 | γ1 | 83 |
3CCV | 33.5 | V90 | 3.871 |
VCPWO2 | 11 | Toff | 5.16 |
1PWO2 | 11 | T | 26.09% |
2PWO2 | 9 | Ion (初始) | 4272 |
VCPWO3 | 3 | Ion (高溫) | 7068 |
合計 | 100 | ΔIon | 2796 |
對比例2
按表3中所列的各化合物及重量百分數配製成對比例2的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表3液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 10 | Cp | 80.1 |
5CCWO2 | 6 | Δn | 0.1087 |
4CCWO2 | 6 | Δε | -3.8 |
2CCWO2 | 8 | VHR | 90% |
3CWO2 | 8 | γ1 | 96 |
3CCV | 22 | V90 | 3.912 |
1VCPWO2 | 11 | Toff | 5.25 |
5CWO2 | 5.5 | T | 25.89% |
2CWO2 | 10 | Ion (初始) | 3889 |
1VCPWO3 | 3 | Ion (高溫) | 5761 |
3CPP2 | 5 | ΔIon | 1872 |
5PP1 | 5.5 | ||
合計 | 100 |
實施例1
按表4中所列的各化合物及重量百分數配製成實施例1的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表4液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 2 | Cp | 79.8 |
5CPWO2 | 6.5 | Δn | 0.1085 |
4CCWO2 | 4.5 | Δε | -4.1 |
2CCWO2 | 6 | VHR | 92% |
3PWO2 | 7 | γ1 | 104 |
3CCV | 33.5 | V90 | 4.015 |
1VCPWO2 | 6 | Toff | 5.34 |
3CWO2 | 16.5 | T | 25.68% |
3CPWO2 | 8 | Ion (初始) | 3810 |
4CPWO3 | 10 | Ion (高溫) | 5610 |
合計 | 100 | ΔIon | 1800 |
實施例2
按表5中所列的各化合物及重量百分數配製成實施例2的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表5液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 10 | Cp | 79.7 |
5CCWO2 | 5 | Δn | 0.1074 |
4CCWO2 | 5 | Δε | -3.9 |
2CCWO2 | 10 | VHR | 92% |
3CWO2 | 8.5 | γ1 | 101 |
3CCV | 20 | V90 | 3.952 |
1VCPWO2 | 12 | Toff | 5.32 |
1PWO2 | 7 | T | 25.74% |
3CC2 | 9 | Ion (初始) | 3812 |
1VCCWO3 | 2 | Ion (高溫) | 5550 |
2PP2V1 | 4.5 | ΔIon | 1738 |
2VCWO1 | 6 | ||
3CECWO2 | 1 | ||
合計 | 100 |
實施例3
按表6中所列的各化合物及重量百分數配製成實施例3的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表6液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 10 | Cp | 79.7 |
5CCWO2 | 5 | Δn | 0.1097 |
4CCWO2 | 5 | Δε | -4 |
2CCWO2 | 10 | VHR | 94% |
3CWO2 | 8.5 | γ1 | 95 |
3CCV | 20 | V90 | 3.905 |
1VCPWO2 | 12 | Toff | 5.29 |
1PWO2 | 12 | T | 25.95% |
3CC2 | 9 | Ion (初始) | 3769 |
1VCCWO3 | 2 | Ion (高溫) | 5371 |
2PP2V1 | 4.5 | ΔIon | 1602 |
2VCWO1 | 1 | ||
2CECWO2 | 1 | ||
合計 | 100 |
實施例4
按表7中所列的各化合物及重量百分數配製成實施例4的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表7液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 10 | Cp | 79.7 |
5CCWO2 | 6 | Δn | 0.1097 |
4CCWO2 | 6 | Δε | -4 |
2CCWO2 | 8 | VHR | 94% |
3PWO2 | 5 | γ1 | 90 |
3CCV | 26 | V90 | 3.899 |
1VCPWO2 | 11 | Toff | 5.26 |
1PWO2 | 11 | T | 25.98% |
2CWO2 | 6.5 | Ion (初始) | 3756 |
1VCPWO3 | 3 | Ion (高溫) | 5271 |
1PP2V | 2.5 | ΔIon | 1515 |
3C2CV1 | 5 | ||
合計 | 100 |
實施例 5
按表8中所列的各化合物及重量百分數配製成實施例5的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表8液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CWO2 | 4 | Cp | 79.8 |
3CCWO2 | 9 | Δn | 0.1092 |
5CCWO2 | 5.5 | Δε | -3.9 |
2CCWO2 | 9 | VHR | 95% |
3PWO2 | 2.5 | γ1 | 87 |
3CCV | 33.5 | V90 | 3.89 |
1VCPWO2 | 10 | Toff | 5.23 |
1VCPWO4 | 3 | T | 26.03% |
1PWO2 | 8 | Ion (初始) | 3706 |
2PWO2 | 8.5 | Ion (高溫) | 5116 |
1VCPWO3 | 4 | ΔIon | 1410 |
1V2PWO3 | 1 | ||
3CC2WO1 | 1 | ||
2C2CWO3 | 1 | ||
合計 | 100 |
實施例 6
按表9中所列的各化合物及重量百分數配製成實施例6的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表9液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 10 | Cp | 79.7 |
5CCWO2 | 5 | Δn | 0.1011 |
4CCWO2 | 6 | Δε | -4 |
2CCWO2 | 8 | VHR | 95% |
3PWO2 | 3.5 | γ1 | 85 |
3CCV | 33.5 | V90 | 3.867 |
1VCPWO2 | 11 | Toff | 5.12 |
1PWO2 | 11 | T | 26.09% |
2PWO2 | 9 | Ion (初始) | 3701 |
1VCPWO3 | 3 | Ion (高溫) | 5102 |
合計 | 100 | ΔIon | 1401 |
實施例 7
按表10中所列的各化合物及重量百分數配製成實施例7的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表10液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 10 | Cp | 80.2 |
5CCWO2 | 6 | Δn | 0.1026 |
2CCWO2 | 8 | Δε | -4 |
3PWO2 | 3.5 | VHR | 96% |
3CCV | 33.5 | γ1 | 78 |
1VCPWO2 | 11 | V90 | 3.861 |
1PWO2 | 11 | Toff | 5.01 |
2PWO2 | 9 | T | 26.14% |
1VCPWO3 | 4 | Ion (初始) | 3662 |
1VCPWO4 | 4 | Ion (高溫) | 4997 |
合計 | 100 | ΔIon | 1335 |
實施例 8
按表11中所列的各化合物及重量百分數配製成實施例8的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表11液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 9 | Cp | 82.1 |
5CCWO2 | 6.5 | Δn | 0.1143 |
2CCWO2 | 7 | Δε | -3.9 |
3PWO2 | 4.5 | VHR | 97% |
3CCV | 34 | γ1 | 72 |
1VCPWO2 | 10 | V90 | 3.858 |
1VCPWO4 | 5 | Toff | 4.93 |
1PWO2 | 9 | T | 26.18% |
2PWO2 | 8 | Ion (初始) | 3631 |
1VCPWO3 | 5 | Ion (高溫) | 4871 |
2V2PWO2 | 1 | ΔIon | 1240 |
2C2CWO2 | 1 | ||
合計 | 100 |
實施例 9
按表12中所列的各化合物及重量百分數配製成實施例9的液晶組合物,其填充於液晶顯示器兩基板之間進行性能測試,測試資料如下表所示:
表12液晶組合物配方及其測試性能
組分代碼 | 重量百分比 | 性能參數測試結果 | |
3CCWO2 | 9 | Cp | 79 |
5CCWO2 | 4 | Δn | 0.116 |
2V1CCWO2 | 5 | Δε | -4.1 |
3PWO2 | 3.5 | VHR | 98% |
3CCV | 34 | γ1 | 66 |
1VCPWO2 | 14 | V90 | 3.856 |
1VCPWO4 | 5 | Toff | 4.88 |
1PWO2 | 9 | T | 26.23% |
2PWO2 | 9 | Ion (初始) | 3597 |
1VCPWO3 | 5 | Ion (高溫) | 4752 |
1V2PWO2 | 1.5 | ΔIon | 1155 |
2LWO2 | 1 | ||
合計 | 100 |
由上述實施例1-9可知,本發明的液晶組合物具有適當的清亮點、適當的光學各向異性、適當的介電各向異性,還具有較高的電壓保持率、較高的透過率及較低的初始離子濃度和離子濃度差值(較好的抗高溫性能),尤其是,當通式I的化合物及通式II的化合物的含量占比提高時,上述性能優勢更明顯,並且旋轉黏度也會顯著降低,從而獲得更快的回應速度,該液晶組合物適用於VA、IPS和FFS等顯示模式。
進一步地,由上述對比例1與實施例6對比可知,對比例1不含本發明通式I的化合物(含有與本發明通式I相近的化合物),其在電壓保持率、抗高溫性能及透過率等方面均顯著劣於實施例6,可見本發明的通式I的化合物對於液晶組合物整體性能具有重要的貢獻作用。
再進一步地,由上述對比例2與實施例1-8對比可知,其缺少本發明通式II的化合物,其在電壓保持率、抗高溫性能及透過率等方面均顯著劣於本發明其他實施例,可見本發明的通式II的化合物同樣是維持本發明液晶組合物在電壓保持率、抗高溫性能及透過率處於較高水準的必要元素。
以上所述,僅是本發明的較佳實施例而已,並非對本發明作任何形式上的限制,雖然本發明已以較佳實施例揭露如上,然而並非用以限定本發明,任何熟悉本專業的技術人員,在不脫離本發明技術方案範圍內,當可利用上述揭示的技術內容作出些許更動或修飾為等同變化的等效實施例,但凡是未脫離本發明技術方案內容,依據本發明的技術實質對以上實施例所作的任何簡單修改、等同變化與修飾,均仍屬於本發明技術方案的範圍內。
Claims (10)
- 如請求項1或2所述之液晶組合物,其中,該液晶組合物包含占該液晶組合物總重量5-25%的至少一種通式I的化合物,占該液晶組合物總重量5-30%的至少一種通式II的化合物,占該液晶組合物總重量10-50%的至少一種通式III的化合物。
- 如請求項4所述之液晶組合物,其中,該通式IV的化合物占該液晶組合物總重量20-45%。
- 一種光電顯示器件,其中,包括如請求項1至9中任一項所述的液晶組合物。
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