33results about How to "Enhanced Contrast Features" patented technology

The present invention relates to an in-plane switching liquid crystal display comprising a negative biaxial retardation film and a positive C-plate, as viewing-angle compensation films. By the use of such viewing-angle compensation films, the contrast characteristics at the front side and inclination angle of the in-plane switching liquid crystal display can be improved and color shift with viewing angle in the dark state can be minimized.

A display element having high response property, wide viewing angle property, and high contrast property, and exhibiting a wide driving temperature range and excellent durability and reliability. Between two facing substrates (1, 2), a cholesteric liquid crystal layer (3) made of a liquid crystal material exhibiting a cholesteric phase whose spontaneous twist pitch is shorter than a wavelength of visible light is provided. Facing planes of the substrates (1, 2) are provided with alignment films (8, 9) for aligning liquid crystal molecules near the interface of the substrate in a specific direction. Furthermore, the planes are provided with electrodes (4, 5) for applying an electric field on the cholesteric liquid crystal layer (3) in a direction substantially parallel to a plane of each substrate. The cholesteric liquid crystal layer (3) exhibits optical isotropy in the direction parallel to the plane of each substrate when no voltage is applied. Display is performed by applying an electric field on the cholesteric liquid crystal layer (3) so as to exhibit optical anisotropy in the direction parallel to the plane of each substrate.

Disclosed is an in-plane switching liquid crystal display, which uses a positive biaxial retardation film while adjusting an optical axis direction and the retardation value of the positive biaxial retardation film. The in-plane switching liquid crystal display improves the contrast characteristic at a predetermined angular position as well as at a front position thereof, so a color shift according to the viewing angle in the black state is minimized.

An object of the present invention is to provide a projection-type image display apparatus improved in contrast. In order to achieve the above object, the present invention includes multiple LED elements, a controller for conducting control so that part of the multiple LED elements emit light, an image display element for forming a desired optical image from the light emitted from part of the LED elements, and a projector for projecting the optical image formed by the image display element.

The invention relates to an optical waveguide near-to-eye display device and augmented reality display equipment. The optical waveguide near-to-eye display device comprises an optical-mechanical system, a coupling-in prism, a waveguide substrate and an unpolarized light splitting film array. The optical-mechanical system is used for emitting collimated light to the coupling-in prism; the coupling-in prism is arranged in a coupling-in area of the waveguide substrate and is used for coupling incident light into the waveguide substrate; the waveguide substrate is used for transmitting the light coupled into the waveguide substrate to the unpolarized light splitting film array in a total reflection mode; and the unpolarized light splitting film array is arranged in the coupling-out area of thewaveguide substrate and is used for coupling out the light transmitted to the unpolarized light splitting film array to human eyes. According to the technical scheme, the light effect of a waveguidelens can be greatly improved on the premise of not influencing the brightness uniformity of the final light entering the eyes, and the brightness of the final light entering the eyes is improved.

The present invention relates to an in-plane switching liquid crystal display comprising a negative biaxial retardation film and a positive C-plate, as viewing-angle compensation films. By the use of such viewing-angle compensation films, the contrast characteristics at the front side and inclination angle of the in-plane switching liquid crystal display can be improved and color shift with viewing angle in the dark state can be minimized.

Disclosed is an in-plane switching liquid crystal display, which uses a positive biaxial retardation film while adjusting an optical axis direction and the retardation value of the positive biaxial retardation film. The in-plane switching liquid crystal display improves the contrast characteristic at a predetermined angular position as well as at a front position thereof, so a color shift according to the viewing angle in the black state is minimized.

The invention discloses a high resolution micro optical device parallel direct write making method and system, adopting electric addressing spatial light modulator, implements light intensity modulation by computer control and adopts time fractionizing method to expand dynamic range of exposure, and implement light intensity modulation fractionization and obtains high resolution photoetching exposure of exposure dosage and spatial positions; it adopts a high reduction power optical system based on combination of Fourier transform lens and objective to make the smallest characteristic size of the made micro optical device reach micron and submicron levels. And it uses the pattern splicing technique to make large-sized micro optical devices. And it has inherent parallel characteristic by adopting a method of making surface exposure on patterns one by one, largely increasing making rate and accuracy of micro optical devices and reducing production cost and the device structure is simple and reliable.

A liquid crystal panel includes: a p-type liquid crystal material sandwiched by a pair of substrates and comb-teeth shape electrodes for applying, to the p-type liquid crystal material, an electric field parallel to a substrate surface. The p-type liquid crystal material is aligned vertically with respect to the substrate surface at the time when no electric field is applied. The comb-teeth shape electrodes have an electrode width of 5 μm or less, and an electrode spacing of 15 μm or less. A product of a dielectric constant anisotropy Δε and a refractive index anisotropy Δn of the p-type liquid crystal material is 1.3 or more and 3.1 or less.

Disclosed is a liquid crystal panel (2) wherein an upper layer electrode (14) and a lower layer electrode (12) are provided by being superimposed by having an insulating layer (13) therebetween on one substrate (10) of a pair of substrates (10, 20) facing each other with a liquid crystal layer (30) therebetween. The upper layer electrode (14) is composed of comb-like electrodes (14A, 14B), and the average electric energy at the position 0.1 [mu]m from the surface of the other substrate (20), on the portion which overlaps the comb-like electrodes (14A, 14B) when the liquid crystal layer (30) is viewed from the direction perpendicular to the substrate surface, is 0.44 j / m3 or more.

Provided are a vertically aligned liquid crystal display (VA-LCD) with good viewing angle characteristics, which has liquid crystals with negative dielectric anisotropy (Δ∈<0). In the VA-LCD, a polynorbornene based polymer film is used as a protection film and / or as a negative C-plate retardation film for an upper polarization plate and / or a lower polarization plate. Therefore, high contrast characteristics for a front view and an oblique angle view are realized and color change for an oblique angle view can be minimized.

The invention provides an orthographic projection screen, in particular an orthographic projection screen with high gain, high contrast and no sensitivity to ambient light. The screen also has the characteristics of high uniformity, no glare, no moire fringe, ultrathin property and high color saturation. The invention also provides a method for manufacturing the screen by adopting photoetching technology, in particular a method for scanning and exposing a photosensing material by utilizing a binary pattern and forming a large-area microrelief structure by performing wet etching on the surface of the photosensing material.

The invention discloses a pixel circuit arranged at a position where a signal line through which a signal current is forced to flow and a scanning line for supplying a control signal intersect with each other, the pixel circuit includes: an electroluminescent element; The electroluminescent element provides a driving transistor for driving current; and a control section adapted to operate according to the control signal to control the driving current of the driving transistor based on the signal current; the control section includes: a first sampling a unit for sampling a signal current caused to flow through the signal line; a second sampling unit for sampling a predetermined reference current caused to flow through the signal line just before or after the signal current and a difference unit, configured to generate a control voltage corresponding to the difference between the sampled signal current and the sampled reference current. The drive transistor receives the control voltage at its gate and supplies a drive current that is caused to flow through its source and drain to the electroluminescent element to cause the electroluminescent element EL to emit light.

A method for artifact correction in computed tomography, the method including: (1) acquiring a plurality of data sets associated with at least one low X-ray energy, and at least one high X-ray energy; (2) generating a plurality of preliminary images from the plurality of data sets; (3) identifying sources of an artifact source image; (4) forward projecting the artifact source image to produce artifact source data; (5) selecting and combining the plurality of data sets acquired in order to produce a new subset of data associated with the artifact, whereby to produce artifact reduced data; (6) generating a repaired data set to keep data sets associated with the low X-ray energy in artifact-free data and to introduce data sets associated with the high X-ray energy in regions impacted by an artifact; and (7) generating a final reduced artifact image from the repaired data set.

In a 2H reverse driving method or the like as a driving method for a liquid crystal display, it is set that a time period from the time when the polarity of a data signal is reversed to the time when a gate selection signal is turned off should be equal to a period while a gate selection signal is in an ON period, and a period from the time when the gate selection signal is turned off to the time when the data signal is changed to a data output corresponding to a pixel selected by the gate selection signal is set equal to or shorter than a period from the time when the gate selection signal is turned off to the time when the polarity of the data signal is reversed.

The colored photosensitive resin composition according to the present invention comprises: a colorant comprising a dye; and a compound represented by the formula (1).

The invention involves plasma display device and its driving method. The plasma display device includes following parts: panels maintaining multiple electrodes which are divided into upper part and lower part maintaining electrode clusters according to their scanning order and have same connections in the same electrode cluster; drivers to drive electrodes; descending control part which will reduce the electronic reduction between scanning electrodes and lower part maintaining electrode cluster when descendent waveform is entered to scanning electrodes. Driving method is the plasma display devices driving method, including reducing the electronic reduction between maintaining electrode clusters and scanning electrodes in the period that descendent waveform is entered.

A liquid crystal panel includes: a p-type liquid crystal material sandwiched by a pair of substrates and comb-teeth shape electrodes for applying, to the p-type liquid crystal material, an electric field parallel to a substrate surface. The p-type liquid crystal material is aligned vertically with respect to the substrate surface at the time when no electric field is applied. The comb-teeth shape electrodes have an electrode width of 5 μm or less, and an electrode spacing of 15 μm or less. A product of a dielectric constant anisotropy Δε and a refractive index anisotropy Δn of the p-type liquid crystal material is 1.3 or more and 3.1 or less.

A method for artifact correction in computed tomography, the method comprising: (1) acquiring a plurality of data sets associated with different X-ray energies (i.e., D1, D2, D3 . . . Dn); (2) generating a plurality of preliminary images from the different energy data sets acquired in Step (1) (i.e., II, I2, I3 . . . In); (3) using a mathematical function to operate on the preliminary images generated in Step (2) to identify the sources of the image artifact (i.e., the artifact source image, or ASI, where ASI=f(I1, I2, I3 . . . In)); (4) forward projecting the ASI to produce ASD=fp(ASI); (5) selecting and combining the original data sets D1, D2, D3 . . . Dn in order to produce a new subset of the data associated with the artifact, whereby to produce the artifact reduced data, or ARD, where ARD=f(ASD, D1, D2, D3 . . . Dn); (6) generating a repaired data set (RpD) to keep low-energy data in artifact-free data and introduce high-energy data in regions impacted by the artifact, where RpD=f(ARD, D1, D2, D3 . . . Dn); and (7) generating a final reduced artifact image (RAI) from the repaired data, RAI=bp(RpD), where the function bp is any function which generates an image from data.

The invention relates to a colored photosensitive resin composition, characterized by containing a colorant of a xanthenes dye represented by a formula 1 and a compound represented by a formula 2.

A liquid crystal panel (2) includes: a pair of substrates (10, 20) which face each other; a liquid crystal layer (30) sandwiched by the pair of substrates (10, 20); and an upper electrode (14) and a lower electrode (12) which are provided on one surface (10) of the pair of substrates (10, 20) and overlap each other via an insulating layer (13), the upper electrode (14) being constituted by comb electrodes (14A, 14B), an average electrical energy being not less than 0.44 J / m3 in a part of the liquid crystal layer which part is 0.1 μm deep from a surface of the other one (20) of the pair of substrates (10, 20) and which part overlaps the comb electrodes (14A, 14B) when the liquid crystal layer (30) is viewed from a direction vertical to a substrate surface.

The colored photosensitive resin composition according to the present invention is characterized by comprising: a dye-containing colorant; and a compound represented by Chemical Formula 1.

The plastic polarized lens (10) of the present invention contains a polarized film (12) and layers (resin layers) (14a and 14b) comprising a thiourethane-based resin stacked over both surfaces of the polarized film (12), and the polarized film contains an organic coloring compound represented by the following general formula (1).

The colored photosensitive resin composition according to the present invention is characterized by comprising: a colorant including a xanthene dye represented by Chemical Formula 1; and a compound represented by Chemical Formula 2.

There is provided a resin-treated pigment that is useful as a coloring agent for color filters or inkjet inks, that can expand a hue range and improve performances such as color density, color developability, and transparency, and that is excellent in properties such as dispersibility and dispersion stability of pigments, re-dissolvability, and alkali-solubility. An A-B block copolymer 90% by mass or more of which is constituted by a methacrylate-based monomer or methacrylate-based monomers, in which the block A has a carboxy group-containing methacrylate as a constituent, and the block B has an ionic bond moiety represented by formula (1) as a constitutional unit, the ionic bond moiety containing a methacrylate, and an organic coloring matter having one or more sulfonate ions each being bonded thereto and each being a counter ion of a nitrogen cation of a quaternary ammonium salt.

The present invention relates to an optical film that comprises a block copolymer that comprises a vinyl polymer block containing styrene or a derivative thereof, and a poly-dimethylsiloxane block, a retardation film using the same, a method of manufacturing them, and a liquid crystal display comprising the films.

The present invention provides a plasma display apparatus which can improve a driving waveform and enhance driving margin and optical characteristic when motion images are outputted. The plasma display apparatus includes a first electrode formed in a panel, and a first electrode driver configured to apply a driving waveform to the first electrode, wherein the first electrode driver applies different driving waveforms when motion images are output and when still images are output. In the plasma display apparatus constructed as described above according to the present invention, images are divided into still images and motion images. In the motion images, as a motion change increases, a driving waveform is varied by decreasing the number of set-up signals or sustain pulses, or by lowering a set-up voltage. Accordingly, the distortion of an image occurring as waveforms are varied can be minimized. Furthermore, there are advantages in that the margin of a driving signal can be enhanced, heat generated from a panel can be reduced, and damage to the panel can be prevented. In particular, there is an advantage in that a contrast characteristic of an image can be improved.

The invention is related to polygraphy, and, in particular, to the production of polymer layers documents, security papers, banknotes as well as for manufacturing of excise documentary stamps, labels, tags and other products of the kind. A polymer layer with a latent polarized image which is achieved by means of preparing a polymer solution in an organic dissolvent, the application of the said solution on a light-reflecting substrate, further drying as a result producing of an optically isotropic polymer layer and forming there on the said polymer layer of image generating areas having anisotropic properties, while the concentration of the polymer solution is from 5 to 30% and the areas having anisotropic properties are produced by means of application on the said polymer layer of micro-lines having the depth from 1 to 3 um and being separated from one another by the distance from 4 to 6 um and more at the rate of the process from 10 to 50 m / min and at the temperature less than the temperature of polymer melting or destruction by from 10 to 60% and the duration of contacting of the working body with said polymer layer from 0.015 to 0.650 msec.