摘要:
A liquid crystal composition comprising at least one compound expressed by formula (1) as the first component, at least one compound expressed by formula (2) as the second component, and at least one compound expressed by either formula (3-1) or (3-2) as the third component. wherein R1, R3, R4, R5 and R6 each independently represent alkyl having 1 to 10 carbon; R2 represents alkyl or alkoxy having 1 to 10 carbon, or —COO—R6; Z1 represents a single bond or —C2H4—.
摘要翻译:一种液晶组合物,其包含至少一种由式(1)表示的化合物作为第一组分,至少一种由式(2)表示的化合物作为第二组分,和至少一种由式(3-1)或 (3-2)作为第三成分。其中R1,R3,R4,R5和R6各自独立地表示具有1-10个碳原子的烷基; R 2表示具有1至10个碳的烷基或烷氧基或-COO-R 6; Z 1表示单键或-C 2 H 4 - 。
摘要:
Provided is a liquid crystal medium for an electro-optical liquid crystal display of an IPS mode which does not cause burning and which is suitable for achieving a relatively low threshold voltage and a short response time. The liquid crystal medium for an IPS mode display comprising 5 to 37.5% by weight of the first component (compound of Formula I) and 5 to 62.5% by weight of the second component (compound of Formula II) or the liquid crystal medium comprising 100% by weight of the first component, 5 to 62.5% by weight of the second component and 5 to 37.5% by weight of third component (compound of Formula III): wherein R1 to R3 represent a C1 to C10 alkyl group, an alkoxy group or an oxalkyl group (containing 1 to 4 oxygen atoms), or a C2 to C10 alkenyl group; X represents transcyclohexylene or phenylene; A represents —CO—O— or a single bond; and Y1 represents a hydrogen atom or a fluorine atom.
摘要翻译:本发明提供一种IPS模式的电光液晶显示器的液晶介质,其不引起燃烧,适合于实现相对低的阈值电压和较短的响应时间。用于IPS模式显示器的液晶介质包括 5至37.5重量%的第一组分(式I化合物)和5至62.5重量%的第二组分(式II化合物)或包含100重量%的第一组分的液晶介质5至 62.5重量%的第二组分和5-37.5重量%的第三组分(式III化合物):其中R1至R3表示C1至C10烷基,烷氧基或氧代烷基(含有1至4个氧 原子)或C2〜C10烯基; X表示反式环亚己基或亚苯基; A表示-CO-O-或单键; Y 1表示氢原子或氟原子。
摘要:
A liquid crystal material for a STN display device having a low viscosity, steep electro-optical response characteristics, and a small temperature dependence of a threshold voltage is provided by a LC composition comprising: at least one first optically active compound having a negative temperature dependence of cholesteric helical pitch induced when added singly to a nematic liquid crystal and at least one second optically active compound having the same helical sense to the first optically active compound and a positive temperature dependence of a cholesteric helical pitch induced when added singly to a nematic liquid crystal, characterized in that the composition has a helical pitch at 25.degree. C. of 6-15 .mu.m, a negative temperature dependence of a helical pitch and a rate of change of a helical pitch of -0.05 to 0 .mu.m/.degree. C. between 10.degree. and 50.degree. C.
摘要:
A guest-host liquid crystal is provided by adding a quinophthalone group pigment or an anthraquinone group pigment as a non-azoic group dichroic pigment, to a host liquid crystal composition composed mainly of a halogenated benzene derivative, and having a high voltage-holding ratio of .DELTA..di-elect cons. of 4.5 to 7.5. By combining a host liquid crystal composition composed mainly of a halogenated benzene derivative and having a high voltage-holding ratio of .DELTA..di-elect cons. of 4.5 to 7.5, with a dichroic pigment having a specified, molecular structure, there is exhibited an effectiveness that it is possible to obtain a guest-host liquid crystal active matrix display element of 3.3V drive having stability under high temperature.
摘要:
A liquid crystal composition which comprises 1 to 15% of a first component (a compound selected from compounds of the formulae I-a and I-b), 8 to 40% of a second component (a compound of the formula II), 10 to 30% of a third component (a compound of the formula III), and 10 to 45% of a fourth component (a compound selected from compounds of the formulae IV-a, IV-b, IV-c and IV-d) ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.8 and R.sup.12 is a C.sub.1 -C.sub.10 alkyl group, R.sup.3 is a C.sub.1 -C.sub.10 alkyl group or a C.sub.2 -C.sub.10 alkenyl group, each of R.sup.4, R.sup.7 and R.sup.11 is a C.sub.1 -C.sub.10 alkyl group or alkoxy group, each of R.sup.5 and R.sup.9 is a C.sub.2 -C.sub.10 alkenyl group or alkenyloxy group, each of R.sup.6 and R.sup.10 is a C.sub.2 -C.sub.10 alkenyl group, and R.sup.13 is a C.sub.2 -C.sub.10 alkoxyalkyl group.
摘要:
A liquid crystal composition having a negative dielectric anisotropy, containing at least one compound selected from the group of compounds represented by Formulas (1-1), (1-2), (1-3) and (1-4) as a first component: wherein R5 is alkyl or alkenyl; R2 is alkyl or alkoxy; A5 is 1,4-phenylene or 2-fluoro-1,4-phenylene; and A6 is 1,4-phenylene, 2-fluoro-1,4-phenylene or 2,3-difluoro-1,4-phenylene.
摘要翻译:含有至少一种选自由式(1-1),(1-2),(1-3)和(1-4)表示的化合物的组中的化合物作为第一种的具有负介电各向异性的液晶组合物 组分:其中R 5是烷基或链烯基; R 2是烷基或烷氧基; A 5 S是1,4-亚苯基或2-氟-1,4-亚苯基; 和A 6是1,4-亚苯基,2-氟-1,4-亚苯基或2,3-二氟-1,4-亚苯基。
摘要:
An organic electroluminescence device utilizes a novel combination of one or more biscarbazole derivative compounds as the phosphorescent host material in combination with an organometallic phosphorescent material as a dopant in the light emitting region of the device, where the biscarbazole derivative compounds are represented by a formula (1A) or (2A) below: where A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3; and the organometallic phosphorescent material is a compound having a substituted chemical structure represented by the formula (4A): where each R is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, alkylaryl, CN, CF3, CnF2n+1, trifluorovinyl, CO2R, C(O)R, NR2, NO2, OR, halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl or a heterocyclic group; M is a platinum group metal; Ar′, Ar″, Ar′″ and Ar″″ each independently represent a substituted or unsubstituted aryl or heteroaryl substituent on the phenylpyridine ligand; a is 0 or 1; b is 0 or 1; c is 0 or 1; d is 0 or 1; m is 1 or 2; n is 1 or 2; m+n is the maximum number of ligands that can be coordinated to M, and wherein at least one of a, b, c, and d is 1 and when at least one of a and b is 1 and at least one of b and c is 1, at least one of Ar′ and Ar″ is different from at least one of Ar′″ and Ar″″.
摘要:
An image forming apparatus includes a latent image bearer, a developing device, a supplier, and a controller. The controller controls the supplier according to a detection result of a toner density by the toner density sensor and a toner density target value to adjust the toner density of developer in the developing device. The controller is configured to correct the toner density target value and an imaging condition affecting a toner adhesion amount of an output image separately from the toner density, according to a component adhesion deterioration degree being a deterioration degree of carrier due to adhesion of a toner component, obtained based on at least an average image area ratio of the output image, and a coating abrasion deterioration degree being a progression degree of deterioration due to coating abrasion of the carrier, obtained based on at least the average image area ratio of the output image.
摘要:
A protective layer forming device, including: a powdery image bearer protecting agent formed of a granulated product containing a fatty acid metal salt and an inorganic lubricant; and a roller-shaped protecting agent supplying member configured to supply the powdery image bearer protecting agent to a surface of an image bearer.
摘要:
In an image forming apparatus, provided with for each toner category a supply toner conveyance path including, at least as components, a developing means, a toner container corresponding to the developing means, and a connection means corresponding to the developing means and the toner container, each of the components of the supply toner conveyance path being individually replaceable, and includes a toner category detection means configured to detect toner category used in each component; a reporting means configured to report whether toner categories respectively used in all components of the same supply toner conveyance path are the same; and a control means configured to control the reporting means, based on detection information by the toner category detection means, when the component of the supply toner conveyance path is replaced.