Abstract: Disclosed are an optical film having a graded refractive index and a method of manufacturing the same. The optical film includes one or more antireflection films composed of a mesoporous material having a plurality of pores of a uniform size, and the pores of the mesoporous material are filled with air or a filler having a refractive index different from that of the mesoporous material, and thus the volume ratio of mesoporous material to filler in the pores thereof is controlled, thereby obtaining a desired magnitude of effective refractive index and ensuring a refractive index distribution in which the refractive indexes sequentially change, resulting in high antireflection performance. The method of manufacturing the optical film may be conducted using a nanowire growing technique, thus making it easy to realize mass production.

Abstract: An object-sensing device is presented. The device includes a waveguide and a substrate holding a liquid crystal layer, wherein radiation propagates through the waveguide via total internal reflection. A radiation emitting element is positioned along a radiation input surface of the waveguide, and a radiation receiving element is positioned to receive radiation exiting the waveguide. The radiation receiving element may be positioned across the waveguide from the radiation emitting element. Alternatively, the radiation receiving element may be positioned on a surface that contacts the radiation input surface of the waveguide that is optically coupled to the radiation emitting element.

Abstract: A touch panel includes a first substrate and a second substrate facing each other, a plurality of first transparent resistance films formed on the first substrate and extending in a first direction, a plurality of second transparent resistance films formed on the second substrate and extending in a second direction crossing the first direction, a plurality of first signal lines respectively connected to first terminals at first ends of the plurality of first transparent resistance films, a plurality of second signal lines respectively connected to second terminals at second ends of the plurality of first transparent resistance films, a plurality of third signal lines respectively connected to third terminals at first ends of the plurality of second transparent resistance films, and a fourth signal line commonly connected to fourth terminals at second ends of at least two second transparent resistance films among the plurality of the second transparent resistance films.

Abstract: A polarized light emitting light guide plate includes: a transparent substrate of optically isotropic material, in which the light incident through a lateral side thereof travels; an anisotropic liquid crystal polymer layer formed on an upper surface of the substrate and having first and second refractive indices with respect to first and second perpendicular polarization components; and a polarization separation microstructure formed at an interface between the transparent substrate and the liquid crystal polymer layer, which refracts or reflects the first polarization component and transmits the second polarization component. The refractive index of the polarization separation microstructure is substantially equal to the refractive index of the substrate; the first refractive index of the liquid crystal polymer layer is greater than the refractive index of the substrate, and the second refractive index of the liquid crystal polymer layer light is substantially equal to the refractive index of the substrate.

Abstract: A polarization converting system and a method of manufacturing the same are provided. The polarization converting system includes a polarization splitting unit splitting incident unpolarized light into two orthogonal polarizations and a polarization converting unit converting incident light into specific polarized light. The polarization converting unit has first and second regions that correspond to the polarization splitting unit and are different in a polarization converting extent from each other.

Abstract: A polarized light emitting light guide plate includes: a transparent substrate of optically isotropic material, in which the light incident through a lateral side thereof travels; an anisotropic liquid crystal polymer layer formed on an upper surface of the substrate and having first and second refractive indices with respect to first and second perpendicular polarization components; and a polarization separation microstructure formed at an interface between the transparent substrate and the liquid crystal polymer layer, which refracts or reflects the first polarization component and transmits the second polarization component. The refractive index of the polarization separation microstructure is substantially equal to the refractive index of the substrate; the first refractive index of the liquid crystal polymer layer is greater than the refractive index of the substrate, and the second refractive index of the liquid crystal polymer layer light is substantially equal to the refractive index of the substrate.

Abstract: A double-side illumination apparatus includes a light source, an isotropic light guide plate including an incident plane on which light emitted from the light source is incident, an opposite plane facing the incident plane, and upper and lower surfaces through which the light is out-coupled. Isotropic micro-structures are formed on the upper and lower surfaces of the isotropic light guide plate, respectively, and first and second anisotropic layers are respectively formed on the upper and lower surfaces of the isotropic light guide plate so as to completely cover the isotropic micro-structures. Herein, the first and second anisotropic layers have different refractive indices with respect to light having first and second polarization components that are perpendicular to each other.

Abstract: According to an example embodiment of the present invention, a photoresist pattern is formed on a base substrate including a neutral layer. A sacrifice structure including a first sacrifice block and a second sacrifice block is formed on the base substrate having the photoresist pattern, and the sacrifice structure is formed from a first thin film including a first block copolymer. Thus, a chemical pattern is formed to form a nano-structure. Therefore, the nano-structure may be easily formed on a substrate having a large size by using a block copolymer, and productivity and manufacturing reliability may be improved.

Abstract: An illumination system for a flat panel display device includes: a light guide plate made of an optically isotropic material; a light source disposed at a side of the light guide plate; an upper layer disposed on a top surface of the light guide plate and made of an optically anisotropic material; and a polarization selection emitting structure which is disposed at an interface of the light guide plate and the upper layer. The upper layer has two different refractive indices and one of the two refractive indices is the same as a refractive index of the light guide plate. In the polarization selection emitting structure differently polarized light is differently refracted, reflected, diffracted, or scattered based on polarization direction.

Abstract: Disclosed are an optical film having a graded refractive index and a method of manufacturing the same. The optical film includes one or more antireflection films composed of a mesoporous material having a plurality of pores of a uniform size, and the pores of the mesoporous material are filled with air or a filler having a refractive index different from that of the mesoporous material, and thus the volume ratio of mesoporous material to filler in the pores thereof is controlled, thereby obtaining a desired magnitude of effective refractive index and ensuring a refractive index distribution in which the refractive indexes sequentially change, resulting in high antireflection performance. The method of manufacturing the optical film may be conducted using a nanowire growing technique, thus making it easy to realize mass production.

Abstract: A polarized light guide plate (LGP), and a method of manufacturing the polarized LGP are provided. The polarized LGP includes: a light source; a first layer that guides light emitted from the light source; a second layer disposed on the first layer and including a first emission unit having repetitive patterns extending in a first direction away from the light source; and a third layer formed of an optically anisotropic material and disposed on the second layer, having an emission surface through which light is emitted, and including a second emission unit disposed on the emission surface and having repetitive patterns arranged in a second direction perpendicular to the first direction.

Abstract: An illuminating apparatus which provides a polarized light is provided. The illuminating apparatus includes a light source; a first layer that guides light emitted from the light source and includes an incident surface to which the light is incident, an upper surface that emits the light, and a light facing surface facing the incident surface, wherein the incident surface has a prism pattern; a second layer formed on the first layer, and including exit units that are arranged in a repeating fashion in a first direction forming a predetermined angle ? with respect to a first axis, which is in parallel with the light source; and a third layer formed on the second layer using an optically anisotropic material, an anisotropic axis of which is formed in a second direction that is perpendicular to the first direction. The light polarized in the second direction is emitted from the illuminating apparatus.

Abstract: A display device that can selectively display 2D and 3D images is provided. The display device includes a backlight unit, a liquid crystal device, and a light control device including two polarizing plates interposed between the backlight and the liquid crystal device each of the polarizing plates having a polarized pattern, and one of the polarizing plates being moveable. Therefore, the display device can selectively display 2D and 3D images by moving one of the polarizing plates parallel to the other polarizing plate, and a width of a light valve can be controlled by the degree of non-alignment of the polarizing plates.

Abstract: A polarization separating film is provided, including an isotropic layer having a refractive index which is the same with respect to light having a first polarization and with respect to light having a second polarization, perpendicular to the first polarization; an anisotropic layer disposed on an upper surface of the isotropic layer and having a first refractive index with respect to light having the first polarization and a second refractive index, different from the first refractive index, with respect to light having the second polarization; a first micropattern disposed on a lower surface of the isotropic layer which changes an optical path of incident light; and a second micropattern, disposed on an interface between the isotropic layer and the anisotropic layer, which totally reflects light having the first polarization and which transmits light having the second polarization.

Abstract: A high-output light guide panel and a backlight unit and display device using the high-output light guide panel are provided. The light guide panel includes a first layer having an incidence surface on which light is incident from at least one light source, an opposite surface disposed opposite the incidence surface, and an emission surface from which light is emitted; a second layer disposed on the first layer and having an emission unit in which prisms are serially and repetitively arranged; and a third layer disposed on the second layer and formed of an anisotropic material. The light guide panel also includes a plurality of light distribution controllers disposed in the second layer which totally reflect light transmitted through the first layer toward the first layer, such that the amount of totally reflected light gradually decreases from a region near the light source toward a region far from the light source.

Abstract: A double-side illumination apparatus includes a light source, an isotropic light guide plate including an incident plane on which light emitted from the light source is incident, an opposite plane facing the incident plane, and upper and lower surfaces through which the light is out-coupled. Isotropic micro-structures are formed on the upper and lower surfaces of the isotropic light guide plate, respectively, and first and second anisotropic layers are respectively formed on the upper and lower surfaces of the isotropic light guide plate so as to completely cover the isotropic micro-structures. Herein, the first and second anisotropic layers have different refractive indices with respect to light having first and second polarization components that are perpendicular to each other.

Abstract: A 2D/3D (two-dimensional/three-dimensional) display including: an image display panel; and a light source which selectively emits light for displaying two-dimensional image and light for displaying three-dimensional image on the image display panel. The image display panel can be a liquid crystal panel, and the light source can be a flat light source having an array of light emitting cells which are turned on and off depending on an applied voltage.

Abstract: A light guide panel and a back light unit having the same are provided. The light guide panel includes an isotropic layer and an anisotropic layer. The isotropic layer includes an incident light surface, a transmission surface, and a polarization recycling unit, disposed opposite the transmission surface, which changes a polarization direction of light. The isotropic layer has a first refractive index. The anisotropic layer is formed on the transmission surface and includes a selectively transmitting and reflecting surface opposite the transmission surface, which reflects a first portion of incident light and transmits a second portion of incident light. The anisotropic layer has a first refractive index, identical to the first refractive index of the isotropic layer, with respect to light having a first polarization and has a second refractive index, different from the first refractive index with respect to light having a second polarization.

Abstract: A waveguide including transmission areas which transmit an input optical signal. A coupling area is provided between the transmission areas and has a width narrower than a width of the transmission areas so that at least part of the optical signal transmitted through the transmission areas is branched to a neighboring optical member.

Abstract: A polarization separating film and a backlight unit including the same are provided. The polarization separating film includes a first layer including an entry surface through which light is incident, and formed of optically isotropic materials, a second layer formed on the first layer and formed of optically anisotropic materials, and a fine pattern formed between the first layer and the second layer, wherein first polarized light of the light is transmitted and second polarized light of the light perpendicular to the first polarized light is reflected.