USRE47117EActiveUtility
Compensated in-plane switching mode liquid crystal display
Est. expiryMay 18, 2027(~0.9 yrs left)· nominal 20-yr term from priority
Inventors:Serguei Palto
G02F 1/134363Y10T428/1041G02F 1/133634G02F 2001/133633G02F 1/133633C09K 2323/031
50
PatentIndex Score
0
Cited by
21
References
37
Claims
Abstract
An in-plane switching type liquid crystal display comprising (a) first and second polarizing plates facing each other and spaced from each other; (b) a liquid crystal cell situated between said first and second polarizing plates; and (c) a compensation structure located between the liquid crystal cell and the first polarizing plate; wherein the director orientation of the liquid crystal layer being controlled by an electric field parallel to the polarizing plates; one said compensation structure is positioned between the liquid crystal cell and the first polarizing plate; the polarizing plates have transmission axes perpendicular to each other, and the compensation structure comprises at least one retardation layer of supramolecules involving at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1. An in-plane switching type liquid crystal display comprising:
(a) first and second polarizing plates facing each other and spaced from each other;
(b) a liquid crystal cell layer situated between said first and second polarizing plates, and
(c) at least one compensation structure;
wherein the director orientation of the liquid crystal layer of said cell being is controlled by an electric field parallel to the polarizing plates,
wherein one compensating compensation structure is located between the liquid crystal cell layer and the first polarizing plate,
wherein the polarizing plates have transmission axes perpendicular to each other, and
the compensation structure comprises at least one retardation layer of supramolecules comprising at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules,
wherein the organic compound has a general structural formula (I)
where Sys is an at least partially conjugated substantially planar heterocyclic or cyclic molecular system,
X is a carboxylic group —COOH,
m is 0, 1, 2, 3 or 4;
Y is a sulfonic group —SO 3 H,
n is 0, 1, 2, 3 or 4;
Z is an amide of a carboxylic acid a carboxyamide group —CONH 2 ,
p is 0, 1, 2, 3 or 4;
Q is an amide of a sulfonic acid a sulfonamide group —SO 2 NH 2 ,
v is 0, 1, 2, 3 or 4;
K is a counterion;
s is the number of counterions providing a neutral state of the molecule;
R is a substituent selected from the list comprising group consisting of CH 3 , C 2 H 5 , NO 2 , cl Cl, BR Br, F, CF 3 , CN, OH, OCH 3 , OC 2 H 5 , OCOCH 3 , OCN, SCN, NH 2 , and NHCOCH 3 ,; and
w is 0, 1, 2, 3 or 4;
and wherein the molecular system Sys is substantially transparent in the visible spectral range and has a general structural formula selected from the group consisting of structures II, III, IV, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII, XIX, XXI, XXII, XXIII, XXIV, XXV, XXVI, XXVII, XXVIII, XXIX, XXXI, XXXII, XXXIII, XXXIV, XXXV, XXXVI, XXXVII, XXXVIII, XXXIX, XL, XLI, XLIII, XLIV, XLV, XLVI, XLVII, and XLVIII:
where n is the number in the range from 1 to 8
2. A liquid crystal display according to claim 1 , wherein the molecular system Sys has a general structural formula from the list comprising structures II to XLVIII
3. A The liquid crystal display according to claim 1 , wherein the counterion is selected from the list comprising ions group consisting of H + , NH 4 + , Na + , K + , Li + , Ba ++ , Ca ++ , Mg ++ , Sr ++ , Cs + , Pb ++ , and Zn ++ .
4. The liquid crystal display according to claim 1 , wherein said supramolecules have planar shapes and their planes are oriented substantially parallel to the surface of the retardation layer.
5. The liquid crystal display according to claim 1 , wherein said non-covalent bonds are hydrogen bonds (H-bonds) or coordination bonds.
6. The liquid crystal display according to claim 1 , wherein said retardation layer has at least a partially crystalline structure.
7. The liquid crystal display according to claim 1 , wherein said retardation layer is insoluble in water.
8. The liquid crystal display according to claim 1 , wherein said compensating compensation structure comprises at least two said retardation layers, of which at least one said wherein one retardation layer is an uniaxial retardation layer of the negative A-plate type, the fast axis of which is substantially parallel to the absorption axis of the first polarizing plate, and at least one said retardation layer is uniaxial retardation layer of the negative C-plate type.
9. The liquid crystal display according to claim 1 , wherein said retardation layer is an uniaxial retardation layer of the negative A-plate type, the fast axis of which is substantially parallel to the absorption axis of the first polarizing plate, and the compensation structure further comprises a layer of triacetyl cellulose (TAC).
10. The liquid crystal display according to claim 9 , wherein each of the first and second polarizing plates comprises at least one layer of triacetyl cellulose (TAC).
11. The liquid crystal display according to claim 1 , wherein said compensation structure comprises at least two said retardation layers, of which at least one said wherein one retardation layer is a biaxial retardation layer of the negative AB-plate type and at least one said retardation layer is an uniaxial retardation layer of the negative C-plate type.
12. The liquid crystal display according to claim 1 , wherein said retardation layer is a biaxial retardation layer of the negative AB-plate type, and the compensation structure further comprises a layer of triacetyl cellulose (TAC).
13. The liquid crystal display according to claim 1 , wherein each of the first and second polarizing plates further comprises at least one layer of triacetyl cellulose (TAC), and said retardation layer is an uniaxial retardation layer of the negative A-plate type, the fast axis of which is substantially parallel to the absorption axis of the first polarizing plate.
14. The liquid crystal display according to claim 1 , wherein said retardation layer is a biaxial retardation layer of the negative AB-plate type, and each of the first and second polarizing plates further comprises at least one layer of triacetyl cellulose (TAC).
15. An in-plane switching type liquid crystal display comprising:
(a) first and second polarizing plates facing each other and spaced from each other;
(b) a liquid crystal cell layer situated between said first and second polarizing plates, and
(c) at least one compensation structure;
wherein the director orientation of the liquid crystal layer of said cell being is controlled by an electric field parallel to the polarizing plates,
wherein one compensating compensation structure is located between the liquid crystal cell layer and the first polarizing plate,
wherein the polarizing plates have transmission axes perpendicular to each other, and
the compensation structure comprises at least one retardation layer of supramolecules comprising at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules,
wherein the organic compound is an oligophenyl derivative having has a general structural formula corresponding to one selected from the group consisting of structures 1 to, 2, 3, 4, 5, 6, and 7:
16. An in-plane switching type liquid crystal display comprising:
(a) first and second polarizing plates facing each other and spaced from each other;
(b) a liquid crystal cell layer situated between said first and second polarizing plates, and
(c) at least one compensation structure;
wherein the director orientation of the liquid crystal layer of said cell being is controlled by an electric field parallel to the polarizing plates,
wherein one compensating compensation structure is located between the liquid crystal cell layer and the first polarizing plate,
wherein the polarizing plates have transmission axes perpendicular to each other, and
the compensation structure comprises at least one retardation layer of supramolecules comprising at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules,
wherein the organic compound is a bibenzimidazole derivative and has a general structural formula corresponding to one selected from the group consisting of structures 8 to and 9:
17. An in-plane switching type liquid crystal display comprising:
(a) first and second polarizing plates facing each other and spaced from each other;
(b) a liquid crystal cell layer situated between said first and second polarizing plates, and
(c) at least one compensation structure;
wherein the director orientation of the liquid crystal layer of said cell being is controlled by an electric field parallel to the polarizing plates,
wherein one compensating compensation structure is located between the liquid crystal cell layer and the first polarizing plate,
wherein the polarizing plates have transmission axes perpendicular to each other, and
the compensation structure comprises at least one retardation layer of supramolecules comprising at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules,
wherein the organic compound is a “triazine” derivative and has a general structural formula corresponding to one selected from the group consisting of structures 10 to, 11, and 12:
18. An in-plane switching type liquid crystal display comprising:
(a) first and second polarizing plates facing each other and spaced from each other; (b) a liquid crystal cell situated between said first and second polarizing plates, and (c) at least one compensation structure;
wherein the director orientation of the liquid crystal layer of said cell being controlled by an electric field parallel to the polarizing plates,
wherein one compensating structure located between the liquid crystal cell and the first polarizing plate,
wherein the polarizing plates have transmission axes perpendicular to each other, and
the compensation structure comprises at least one retardation layer of supramolecules comprising at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules,
wherein the organic compound is an acenaphthoquinoxaline derivative comprising a carboxylic group or sulfonic group and having a general structural formula corresponding to one of structures 13 to 31:
19. An in-plane switching type liquid crystal display comprising:
(a) first and second polarizing plates facing each other and spaced from each other;
(b) a liquid crystal cell layer situated between said first and second polarizing plates,; and
(c) at least one compensation structure;
wherein the director orientation of the liquid crystal layer of said cell being is controlled by an electric field parallel to the polarizing plates,
wherein one compensating compensation structure is located between the liquid crystal cell layer and the first polarizing plate,
wherein the polarizing plates have transmission axes perpendicular to each other, and
the compensation structure comprises at least one retardation layer of supramolecules comprising at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules,
wherein the organic compound is a 6,7-dihydrobenzimidazo[1,2-c]quinazolin-6-one derivative having at least one carboxylic group —COOH, m is 1, 2 or 3, or at least one sulfonic group —SO 3 H, n is 1, 2 or 3, and said derivative has a general structural formula selected from the group comprising consisting of structures 32 to, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52 and 53; wherein R is a substituent selected from the group consisting of CH 3 , C 2 H 5 , NO 2 , Cl, Br, F, CF 3 , CN, OH, OCH 3 , OC 2 H 5 , OCOCH 3 , OCN, SCN, NH 2 , and NHCOCH 3 ; and w is 0, 1, 2, 3 or 4:
20. An in-plane switching type liquid crystal display comprising:
(a) first and second polarizing plates facing each other and spaced from each other;
(b) a liquid crystal cell layer situated between said first and second polarizing plates, and
(c) at least one first and second compensation structure structures;
wherein the director orientation of the liquid crystal layer of said cell being is controlled by an electric field parallel to the polarizing plates,
wherein one compensating the first compensation structure is located between the liquid crystal cell layer and the first polarizing plate,
wherein the polarizing plates have transmission absorption axes perpendicular to each other, and
the first compensation structure comprises at least one retardation layer of supramolecules comprising at least one polycyclic organic compound with a conjugated π-system and functional groups which are capable of forming non-covalent bonds between said supramolecules,
wherein the liquid crystal display comprises two compensation structures, of which one said second compensation structure is positioned between the liquid crystal cell layer and the second polarizing plate and comprises a retardation layer, and wherein said retardation layers layer of each of two said first and second compensation structures comprise comprises an uniaxial retardation layer of the negative A-plate type, the fast axis of which is the first compensation structure being substantially parallel to the absorption axis of the first polarizing plate and the fast axis of the second compensation structure being substantially parallel to the absorption axis of the second polarizing plate.
21. The liquid crystal display according to claim 20 , wherein the first polarizing plate comprises at least one layer of triacetyl cellulose (TAC).
22. The liquid crystal display according to claim 20, wherein the polycyclic organic compound has the general structural formula I
wherein Sys is an at least partially conjugated substantially planar heterocyclic or cyclic molecular system, X is —COOH, and m is 0, 1, 2, 3 or 4; Y is —SO 3 H, and n is 0, 1, 2, 3 or 4; Z is —CONH 2 , and p is 0, 1, 2, 3 or 4; Q is —SO 2 NH 2 , and v is 0, 1, 2, 3 or 4; K is a counterion, and s is the number of counterions providing a neutral state of the compound; and R is a substituent selected from the group consisting of CH 3 , C 2 H 5 , NO 2 , Cl, Br, F, CF 3 , CN, OH, OCH 3 , OC 2 H 5 , OCOCH 3 , OCN, SCN, NH 2 , and NHCOCH 3 ; and w is 0, 1, 2, 3 or 4; and
wherein Sys is substantially transparent in the visible spectral range.
23. The liquid crystal display according to claim 22, wherein the molecular system Sys has a general structural formula II
where n is 1 to 8.
24. The liquid crystal display according to claim 22, wherein the polycyclic organic compound has structure (1)
25. The liquid crystal display according to claim 22, wherein the molecular system Sys has a general structural formula III
26. The liquid crystal display according to claim 22, wherein the molecular system Sys has a general structural formula IV
27. The liquid crystal display according to claim 22, wherein the polycyclic organic compound has structure (10)
28. The liquid crystal display according to claim 22, wherein the molecular system Sys has a general structural formula V
29. The liquid crystal display according to claim 22, wherein the molecular system Sys has a general structural formula VIII
30. The liquid crystal display according to claim 22, wherein the polycyclic organic compound has structure (32)
wherein R is a substituent selected from the group consisting of CH 3 , C 2 H 5 , NO 2 , Cl, Br, F, CF 3 , CN, OH, OCH 3 , OC 2 H 5 , OCOCH 3 , OCN, SCN, NH 2 , and NHCOCH 3 ; and w is 0, 1, 2, 3 or 4.
31. The liquid crystal display according to claim 1, wherein the molecular system Sys has a general structural formula II
where n is 1 to 8.
32. The liquid crystal display according to claim 15, wherein the polycyclic organic compound has structure (1)
33. The liquid crystal display according to claim 1, wherein the molecular system Sys has a general structural formula III
34. The liquid crystal display according to claim 1, wherein the molecular system Sys has a general structural formula IV
35. The liquid crystal display according to claim 1, wherein the polycyclic organic compound has structure (10)
36. The liquid crystal display according to claim 1, wherein the molecular system Sys has a general structural formula VIII
37. The liquid crystal display according to claim 1, wherein the polycyclic organic compound has structure (32)
wherein R is a substituent selected from the group consisting of CH 3 , C 2 H 5 , NO 2 , Cl, Br, F, CF 3 , CN, OH, OCH 3 , OC 2 H 5 , OCOCH 3 , OCN, SCN, NH 2 , and NHCOCH 3 ; and w is 0, 1, 2, 3 or 4.Cited by (0)
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