14 results about "Optical film" patented technology

Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.

An optical sheet suitable for use in a laminate comprising at least one glazing component. The optical sheet comprises a non-metallic multi-layer optical film that has multiple optical layers, and can be, for example, a solar energy reflective film (e.g., an infrared radiation reflective film). The multiple layers are thermally and/or otherwise fused together along all, substantially all or at least a substantial portion of the peripheral edge of at least the optical film, so as to prevent or at least substantially reduce the occurrence or degree of delamination of the multiple layers along all, substantially all, or the substantial portion of the peripheral edge of the optical film. At least the optical film can be dimensioned such that, when bonded to a glazing component, all, substantially all or at least the substantial portion of the peripheral edge of at least the optical film is positionable so as to be co-extensive with or substantially co-extensive with a corresponding portion of the peripheral edge of the glazing component to which the optical sheet is to be bonded.

A liquid crystal display apparatus is provided which has two or more options in selection of the range of viewing angles. A surface light source device according to the invention has a main surface from which light is emitted, and includes a plurality of light guide plates corresponding to a plurality of regions obtained by dividing the main surface in parallel; an optical film provided on the exit surface side of the light guide plates; and a light driver that controls the turning on and off of the plurality of light guide plates. The optical film includes a light-guide slit film which transmits light that is emitted from the light guide plates and that is within a certain range of angles.

A method of producing an optical film comprising at least two ionizing radiation-curing layers on a transparent substrate, the method comprising: Step 1 of irradiating a layer A, which comprises two or more kinds of polymerization initiators having different absorption ends at a longer wavelength side in wavelength range of sensitivity to which they are sensitive, with an ionizing radiation having a wavelength to which at least one kind (a) of the polymerization initiators is not substantially sensitive and at least one kind (b) of the polymerization initiators is sensitive; and Step 2 of spreading a coating solution for layer B comprising at least one polymerization initiator (c) over the layer A after Step A and then irradiating the coating solution for layer B with an ionizing radiation having a wavelength to which the polymerization initiators (a) and (c) are sensitive.

The present invention relates to a liquid crystal alignment layer composition showing excellent adhesive strength to a substrate and a liquid crystal layer and excellent homeotropic alignment of liquid crystals, a liquid crystal alignment layer prepared with the same, a preparation method of the liquid crystal alignment layer, an optical film including the liquid crystal alignment layer, and a display device including the same. According to the present invention, provided are a liquid crystal alignment layer composition which comprises 1-50 wt % of a photocurable resin binder, 0.01-5 wt % of an amine compound selected from the group consisting of primary and secondary amino-based coupling agents, 0.1-5 wt % of a photoinitiator, and the remainder solvent; a method for preparing a liquid crystal alignment layer by coating the substrate with the liquid crystal alignment layer composition, removing the solvent, and curing the liquid crystal alignment layer composition; an alignment layer which is prepared with the liquid crystal alignment layer composition of the present invention; an optical film which comprises the substrate, the alignment layer, and a liquid crystal layer formed on the alignment layer; and a display device including the optical film. The liquid crystal alignment layer formed with the liquid crystal alignment layer composition of the present invention has excellent adhesive strength to the substrate and to an upper liquid crystal layer, and provides excellent homeotropic alignment to liquid crystals. The optical film of the present invention can be applied to a polarizer by itself and can be very helpfully used as a retardation film or a view angle compensation film in various types of LCD modes such as IPS mode and the like.

The invention relates to a backlight system containing a free-form surface reflector. The backlight system comprises light sources (1) and a backlight cavity (3), wherein the bottom of the backlight cavity (3) is a free-form surface reflecting plane (2) with high reflectivity, the backlight cavity (3) is formed by a side wall, the bottom free-form surface reflecting plane (2) and a diffusion barrier (5) arranged on the top of the backlight cavity (3), a brightness enhancement film and other optical film layers and a LCD panel are arranged on the diffusion barrier (5); the light sources (1) are arranged on the bottom of the backlight cavity (3), positioned in line and installed on the axis of the free-form surface reflecting plane (2); and a transflective optic plate (4) is arranged just above the light sources (1) in the backlight cavity (3). The backlight system of the invention has the advantages that the illuminance is uniform, the overall thickness of the system is thin, the luminous efficacy is high, and the system has the advantage of being convenient to install and cool.

The invention relates to an anti-blue-ray system. The anti-blue-ray system is characterized in that an anti-blue-ray agent in the system has a pyrazoline compound structure as shown in a formula (I) which is described in the specification or/and a cinnamic acid compound structure as shown in a formula (II) which is described in the specification. The compound as shown in the formula (I) or/and thecompound as shown in the formula (II) can fully absorb short-wavelength blue light to protect the eye, and can also selectively absorb long-wavelength blue light so as to allow transmitted light to present particularly good visual perception. The anti-blue-ray system of the invention is applicable to products such as optical films, optical lenses, goggles, skin care products, lighting products, paints, adhesives and panels. The products have light-colored appearance and transmitted light presents particularly good visual perception.

A display includes a display panel and a backlight module. The backlight module is configured below the display panel and includes a light guide plate (LGP), a light source, an optical film, and a pad. The light source is located near the LGP. The optical film is configured on the LGP. The pad is located between the optical film and the display panel. A first surface of the pad is fixed to the optical film, and a second surface of the pad is slidable relative to the display panel.

The invention provides a polarizing plate capable of suppressing light leakage and an image display device. The polarizing plate (1) has a film-shaped polarizing film (7) and a plurality of optical films (3, 5, 9, 11, 13) overlapping with the polarizing film (7). The verticality (a/b) of a hole (21) penetrating through the polarizing plate (7) is above 0.00 and smaller than 0.32. The width (W) of a polarization eliminating part (23) around the hole (21) is above 0.00 [mu]m and smaller than 32 [mu]m.

The invention belongs to the technical field of optical film materials, and relates to a preparation method of a distorted grain boundary phase-A liquid crystal mixed material with a wide temperaturerange. The method comprises the following steps: mixing phase-A-cholest-N*phase transformed liquid crystal molecules, nematic phase micromolecular liquid crystals and nematic phase-smectic phase liquid crystal molecules to obtain a distorted grain boundary phase A, obtaining a wide-temperature-range distorted grain boundary phase A by controlling a mixing ratio of the molecules in the mixing process, thus obtaining the wide-temperature-range TGBA phase; and adding chiral additives into the proportioned TGBA phase to adjust an initial reflection wave site when the liquid crystal mixed materialis in the TGBA phase. The liquid crystal mixed material provided by the invention has wider TGBA phase temperature range, the initial (cooling process) reflection wave site when the liquid crystal mixed material is in TGBA phase can be adjusted at the same time, and the experimental process is simple and easy to operate.

The invention provides a high-screen duty ratio display device with fingerprint identification, which comprises a lower substrate, an upper substrate and a cover plate. The lower substrate has a thinfilm transistor array layer provided with a plurality of thin film transistors and corresponding capacitors to provide a display area on the thin film transistor array layer. The upper substrate is located on one side of the thin film transistor array layer and has an optical film layer and a color filter layer. The cover plate is located on one side of the upper substrate, and has an aperture toreceive a fingerprint identification module, wherein the aperture of the cover plate is at least partially corresponding to the display area, and a space is formed below the aperture of the cover plate to receive a part of the fingerprint identification module.

A plasma display panel device includes an upper substrate and a bottom substrate. A dielectric layer, a plurality of displaying electrodes and scanning electrodes are arranged on an inner surface of the upper substrate. A plurality of addressing electrodes and blue fluorescent layers are arranged on an inner surface of the bottom substrate. An optical film stack is formed on a surface of each blue fluorescent layer. The optical film stack includes a plurality of first optical units, and a plurality of second optical units located on the plurality of first optical units. Each of the first optical units and the second optical units respectively includes a high refractive index film and a low refractive index film.

The invention relates to an optical film and a camera module. The optical film comprises a base material, a filter film and an anti-reflection film. The base material comprises a first surface and a second surface located on the opposite side of the first surface. The filter film is arranged on the first surface. The anti-reflection film is arranged on the second surface and comprises an anti-reflection film body and a thickening film layer stacked on the anti-reflection film body, the anti-reflection film body is used for improving the passing rate of preset light, and the thickening film layer is used for improving the thickness of the anti-reflection film so as to reduce warping of the optical film. The thickness of the anti-reflection film is increased by arranging the thickening film layer, so that the warping phenomenon of the optical film caused by the large thickness difference between the anti-reflection film and the filter film can be avoided. Meanwhile, the anti-reflection film can also improve the problem that the reflectivity of the side, provided with an image sensor, of the optical film is high and relieve the flash phenomenon, so that the camera module using the optical film can obtain a better imaging effect.