30 results about "Molecular axis" patented technology

The present invention discloses a liquid crystal display device which is arranged by: (A) the first substrate including a plurality of scanning lines and a plurality of signal lines arranged in a matrix form; a common signal line extended in parallel to one of the scanning lines and the signal lines, for applying a reference potential thereto; a pixel electrode; and a thin-film transistor having a source electrode connected to the pixel electrode, a drain electrode connected to the signal line, and a gate electrode connected to the scanning line, the thin-film transistor being formed in an intersection portion between the scanning line and the signal line; (B) the second substrate including a black matrix layer and positioned opposite to the first substrate with sandwiching a liquid crystal layer between the first substrate and the second substrate; and (C) an insulating layer sandwiched between the pixel electrode of the first substrate and the scanning line. While a voltage is applied between the common signal line and the pixel electrode to thereby produce an electric field, a direction of a molecular axis of liquid crystal molecules contained in the liquid crystal layer is rotated within a plane located in parallel to the first substrate so as to perform a liquid crystal display; and further said pixel electrode of the first substrate covers a portion of the scanning lines located in a region other than such a region where the thin-film transistor is formed.

An in-plane switching mode active matrix type liquid crystal display device includes a first substrate, a second substrate located opposing the first substrate, and a liquid crystal layer sandwiched between the first and second substrates. The first substrate includes a thin film transistor, a pixel electrode each associated to a pixel to be driven, a common electrode to which a reference voltage is applied, data lines, a scanning line, and common electrode lines. Molecular axes of liquid crystal are rotated in a plane parallel with the first substrate by an electric field substantially parallel with a plane of the first substrate to thereby display certain images. The common electrode is composed of transparent material, and are formed on a layer located closer to the liquid crystal layer than the data lines. The common electrode entirely overlaps the data lines except an area where the data lines are located in the vicinity of the scanning line. The liquid crystal display device further includes a light-impermeable layer in an area where the common electrode entirely overlaps the data lines. The light-impermeable layer is comprised of a black matrix layer having a width smaller than a width of the common electrode.

A liquid crystal device has a pair of oppositely disposed substrates and a liquid crystal having chiral smectic C phase disposed therebetween. The liquid crystal is placed in an alignment state in chiral smectic C phase with smectic molecular layers forming a chevron structure. Under no electric field application, the liquid crystal has an average molecular axis substantially in alignment with the uniaxial alignment axis and/or a bisector of a maximum angle formed between two extreme molecular axes established under electric field application, while under electric field application, the liquid crystal provides an effective tilt angle and a transmittance that continuously changes depending on an electric field applied thereto.

A liquid crystal device comprising, at least, a liquid crystal element comprising at least a pair of substrates and a liquid crystal material disposed between the pair of electrodes, and electric field-applying means for applying an electric field to the liquid crystal element. The electric field-applying means applies a reverse electric field (−T_INT) so as to cancel an orientation energy difference (T_INT) depending upon relative directions between the applied electric field and aligned liquid crystal molecular axis in the liquid crystal element. There is provided a liquid crystal device capable of effectively suppressing the reduction in contrast, even when the optical response speed is increased.

Disclosed is an apparatus and method for embodying mirror function in a portable terminal by which a user can use an LCD of the portable terminal as a mirror, with a rear polarizer of the LCD constructed to allow the LCD to reflect incident light and to perform as a mirror when powered off, and to perform the original function of LCD when powered on. The LCD may further comprise a front polarizer for polarizing the external incident light to a certain direction, a liquid crystal for deflecting the incident light from the front polarizer about a molecular axis in the liquid crystal and arraying the light parallel to the direction of an electric field to pass the light along the molecular axis, and a rear polarizer for reflecting incident light from the liquid crystal when power is not applied and allowing the incident light to pass by the liquid crystal when power is applied.

A liquid crystal device is constituted by a chiral smectic liquid crystal to form a plurality of pixels. The chiral smectic liquid crystal has a temperature-dependent tilt angle characteristic satisfying the following relationship:wherein Ĥ10 denotes a tilt angle at a temperature which is 10° C. lower than an upper limit temperature of chiral smectic C phase and Ĥ1 denotes a tilt angle at a temperature which is 1° C. lower than the upper limit temperature. The liquid crystal is aligned to provide an average molecular axis to be placed in a monostable alignment state under no voltage application, is tilted from the monostable alignment state in one direction when supplied with a voltage of a first polarity at a tilting angle which varies depending on magnitude of the supplied voltage, and is tilted from the monostable alignment state in the other direction when supplied with a voltage of a second polarity opposite to the first polarity at a tilting angle, said tilting angles providing maximum tilting angles formed under application of the voltages of the first and second polarities, respectively, different from each other,and one of said tilting angles continuously changing depending on magnitude of the supplied voltage of the first polarity or the second polarity.

The invention relates to an organic light-emitting device (OLED) comprising at least: a first electrode (102); a second electrode (105); an organic light emissive layer (104) arranged between said first electrode and said second electrode; and an organic charge transport layer (103) arranged between said first electrode and said emissive layer, wherein i) the charge transport layer is patterned or provided with a periodic surface structure on a surface of the charge transport layer facing the emissive layer, and/or ii) an alignment layer (406) which allows for charge transport to the emissive layer is provided between said charge transport layer and said emissive layer, which alignment layer promotes alignment of the optical dipoles of molecules of said light emissive layer towards a common preferred direction of the molecular axes. The use of the patterned or structured charge transport layer and/or the alignment layer provides improved light out coupling from the OLED layer stack, i.e. increased external quantum efficiency.

A method for producing a tunable non-gradient optical force on the surface of a liquid crystal material and metal multi-layer core-housing by slanting incidence-light is provided. The method comprising destroying symmetric distribution of Poynting vectors around the multi-layer core-housing, enabling a total Poynting vector on the multi-layer core-housing not to be zero and producing a non-gradient optical force; and then, by changing an arranging direction (the direction of a liquid crystal molecular axis) of liquid crystal molecules in liquid crystal materials, changing the direction and the size of the total Poynting vector on the multi-layer core-housing, thus changing the direction and the size of the non-gradient optical force acted on the multi-layer core-housing by the total Poynting vector thus to regulate a moving track of the multi-layer core-housing in an incidence light field, and carrying out tunable capture and screening on nanoscale molecules adhered onto the surface of the multi-layer core-housing. Through methods such as illumination, electrification, heating and pressurization, the direction of the liquid crystal molecular axis of the liquid crystal materials in the liquid crystal material/metal multi-layer core-housing is altered.

The invention discloses a method for generating an extreme ultraviolet coherent light source with approximate circular deflection. The method comprises the following steps of (S1) enhancing linear polarization incident laser until the intensity level of the linear polarization incident laser reaches 1013-1014W/CM(2); (S2) performing interaction on the enhanced incident laser and diatomic gas molecules to generate a harmonic; adjusting an included angle between the polarization direction of the linear polarization incident laser and a molecular axis until a harmonic stage required for generation of the light source is acquired; and (S3) converting spectra of two harmonic components of which the energy intensities are equal to each other and the relative phases are 90 degrees in the harmonic stage into two attosecond pulses, and synthesizing the two attosecond pulses to obtain the extreme ultraviolet coherent light source with approximate circular deflection. A harmonic spectrum has two components in two different directions; the energy intensities of the components of the harmonic spectrum in the harmonic stage are equal to each other; and the relative phases are 90 degrees. By the method for generating the extreme ultraviolet coherent light source with approximate circular deflection, the generated extreme ultraviolet coherent light source with approximate circular deflection is high in harmonic efficiency and short in pulse width.

The invention discloses double-alkyl-terminated cyclohexylbiphenyl derivative with lateral difluoromethylene ether bridge bonds and a preparation method and application thereof; a structural formula of the compound is as shown in formula I that is shown in the description; in the formula I, both R and R' are C1-C10 linear or branched alkyl; difluoromethylene ether group is introduced to cyclohexylbiphenyl ring structure; under electronegative accumulative action of C-F bonds in the group and the group being in lateral position of the molecular long axis, these molecules have great dielectric constant (epsilon T) perpendicular to the molecular axis and negative dielectric anisotropy (Delta<epsilon><0); due to the introduction of the difluoromethylene ether group, conjugation of the biphenyl structure is broken, great anisotropy (Delta<epsilon><0) is imparted; this compound has low melting point and improved solubility and is a high-performance liquid crystal display material.

The invention relates to a tunable capturing and screening method of linear polarization planar optical waves for a liquid crystal material particle above a substrate. The technical scheme of the tunable capturing and screening method comprises the steps of arranging the liquid crystal material particle above a substrate plate, damaging symmetrical distribution of Poynting vectors around the liquid crystal material particle, enabling the total Poynting vector on the liquid crystal material particle not to be zero, and generating a non-gradient optical force; and then changing the direction and the size of the total Poynting vector on the liquid crystal material particle through changing the arrangement direction of a liquid crystal molecule in a liquid crystal material, that is, the direction of a liquid crystal molecular axis, so as to regulate and control the movement track of the liquid crystal material particle in an incident field, thereby carrying out tunable capturing and screening on nano-sized molecules attached to the surface of the liquid crystal material particle. The direction of the liquid crystal molecular axis in the liquid crystal material is changed through the modes of illumination, electrification, heating, pressurization and the like.

The invention relates to an organic molecular line. The molecular line comprises tetrathiafulvalene, derivative thereof and a substrate, the tetrathiafulvalene and the derivative thereof are accumulated along the lowest-system energy direction Pi-Pi on the surface of the substrate, the intermolecular distance of the organic molecular line is 0.5nm to 0.8nm, and the organic molecular line is 40nm to 400nm long and 0.8nm to 1.2nm wide; the organic molecular line has a single-layered double-molecular line structure or a single-line structure on the surface of the substrate; and the molecular line makes the included angle of 60 degrees or 120 degrees with the molecular axis. A method for preparing the molecular line has the following steps that: TTFs is dispersed and dissolved in tetradecane, so that the tetradecane solution of TTFs is obtained; the tetradecane solution of TTFs is dripped to a clean, even highly oriented pyrolytic graphite (HOPG) surface, and after the solution is dispersed and stabilized on the surface, the one-dimensional ordered TTFs molecular line is obtained. The invention utilizes the solution method to realize the self-assembling growth of TTFs molecules on the solid surface, a molecular line which is tens to hundreds of nanometers long can be obtained, and the preparation technique is simple, and is applicable to various TTFs molecules.