摘要:
A liquid crystal display which carries out matrix driving of a chiral nematic liquid crystal composition, which is capable of displaying an image theron continuously after an electric field applied thereto is turned off, by applying an electric field to the liquid crystal composition through a plurality of scan electrodes and a plurality of data electrodes which face and cross each other with the liquid crystal composition in-between. The nematic liquid crystal which is the main element of the liquid crystal composition mainly contains a liquid crystalline ester compound, a liquid crystalline stilbene compound, a liquid crystalline terphenyl compound or a liquid crystalline tolane compound. A driving section of the liquid crystal display drives the liquid crystal composition by a driving method which comprises a reset step of applying a reset pulse to cause the liquid crystal composition to come to a homeotropic state, a selection step of applying a selection pulse to select a final state of the liquid crystal composition and an evolution step of applying an evolution pulse to cause the liquid crystal composition to evolve to the selected final state and in which the selection of the final state of the liquid crystal composition is carried out by modulating the selection pulse.
摘要:
A chiral nematic liquid crystal composition that exhibits a cholesteric phase, said chiral nematic crystal composition comprising 55 wt % to 90 wt % of a nematic liquid crystal composition that comprises, as main components thereof, a liquid crystal ester compound and a liquid crystal pyrimidine compound, wherein said liquid crystal ester compound does not include a tolan skeleton therein and said liquid crystal pyrimidine compound includes a fluorine atom therein; and 10 wt % to 45 wt % of at least one chiral agent. A liquid crystal light modulating apparatus comprising a pair of substrates at least one of which is transparent; and the chiral nematic liquid crystal composition disposed between the substrates.
摘要:
A chiral nematic liquid crystal composition which contains a nematic liquid crystal mixture and a chiral agent, which exhibits a cholesteric phase at room temperature and which selectively reflects light of a specified wavelength, wherein the chiral agent has an anisotropy of dielectric constant within a range from 12 to 60. Such a chiral nematic liquid crystal composition may have a larger anisotropy of dielectric constant than the nematic liquid crystal mixture before being mixed with the chiral agent. Alternatively, in such a chiral nematic liquid crystal composition, the anisotropy of dielectric constant of the chiral agent may be larger than that of the nematic liquid crystal mixture. By filling such a chiral nematic liquid crystal composition between transparent substrates, a liquid crystal cell is fabricated, and by stacking such liquid crystal cells in three layers, a reflective type full-color liquid crystal display can be produced.
摘要:
An electrostatic charge image developing toner comprises core particles formed by flocculating and fusion-bonding at least polyester resin particles containing wax and colorant particles, and a coating layer containing a resin formed over the core particles.
摘要:
A liquid crystal element of a layered type capable of high contrast is provided. For example, in the liquid crystal element of the layered type including liquid crystal layers b, g and r in this order, each of the liquid crystal layers b, g and r is held between electrode formation surfaces of a pair of substrates each provided with an electrode, an insulating film is disposed between the electrodes of the substrates, and at least two liquid crystal layers of the liquid crystal layers b, g and r have the insulating films opposed to the liquid crystal layers and being different in refractive index from each other, respectively.
摘要:
An electrostatic charge image developing toner comprises core particles formed by flocculating and fusion-bonding at least polyester resin particles containing wax and colorant particles, and a coating layer containing a resin formed over the core particles.
摘要:
The present invention relates to a styryl polymer, represented by the following formula (I) or (II), a production method thereof and use thereof to a photosensitive member and a electroluminescence element: ##STR1## in which Ar.sub.11 is an arylene group which may have a substituent; Ar.sub.12 is an aryl group, a polycondensed ring group or a heterocyclic ring group; n.sub.1 is a natural number; ##STR2## in which Ar.sub.21, Ar.sub.22, and Ar.sub.24 are respectively an arylene group which may have a substituent; Ar.sub.25 is an arylene group or a bivalent polycondensed ring group, which may have a substituent; Ar.sub.23 and Ar.sub.26 are respectively an alkyl group, an aralkyl group or an aryl group, which may have a substituent; m.sub.2 is 0, 1, 2 or 3; n.sub.2 is a natural number.
摘要翻译:本发明涉及由下式(I)或(II)表示的苯乙烯基聚合物,其制备方法及其在光敏元件和电致发光元件中的应用:其中Ar 11为可具有取代基的亚芳基 ; Ar 12是芳基,缩聚环基或杂环基; n1是自然数; 其中Ar 21,Ar 22和Ar 24分别是可以具有取代基的亚芳基; Ar25是可以具有取代基的亚芳基或二价缩聚环基; Ar 23和Ar 26分别是可以具有取代基的烷基,芳烷基或芳基; m2为0,1,2或3; n2是自然数。
摘要:
Disclosed is a liquid crystal display apparatus comprising a pair of substrates and a liquid crystal layer provided between the substrates, the liquid crystal layer containing a liquid crystal composition that exhibits a cholesteric phase. The liquid crystal composition contains a mixture of a chiral material and nematic liquid crystal. The liquid crystal display layer is configured to satisfies the following conditions: a viscosity a [cP] of the liquid crystal composition is in a range from 30 to 150; a dielectric anisotropy b of the liquid crystal composition is in a range from 5 to 50; a thickness c [μm] of the liquid crystal layer is in a range from 3 to 8; and a product of a, b, and c is not less than 3500.
摘要:
An organic electro-luminescence display element comprising at least a positive electrode, an organic luminescent film and a negative electrode, wherein the positive electrode is formed of an electrically conductive film having transparency, the negative electrode is formed of a metal film containing metal having a low work function, and the negative electrode is connected to a power supply lead portion made of a transparent and conductive film.
摘要:
An organic electroluminescent element includes at least a positive electrode, an electron injection layer, and a negative electrode, wherein the electron injection layer is formed of an alkali metal organic salt, an alkaline earth metal organic salt, an alkali metal organometallic complex or an alkaline earth metal organometallic complex.