Abstract: A light guide plate includes a first optical member having a first light path-changing portion to separate a first light portion and a second light portion from a light, and a second optical member having a second light path-changing portion corresponding to the first light path-changing portion. The first optical member has a first refractive index against the first light portion of the light and a second refractive index against the second light portion of the light, and the second optical member has the first refractive index against the first and second light portions. Thus, brightness and brightness uniformity of an image displayed on a display apparatus may be improved, and a number of parts of the display apparatus may be reduced.

Abstract: An optical plate includes a main body plate, and a plurality of lens patterns formed on a first surface of the main body plate, wherein the lens patterns are elongated in a first direction and arranged in parallel with each other in a second direction crossing the first direction, wherein a cross section of the lens patterns form a part of an ellipse shape, the ratio of a semi-major axis to a semi-minor axis of the ellipse shape ranging from about 1.65 to about 1.75.

Abstract: A liquid crystal display device includes a liquid crystal display panel. A light guide plate is disposed at a rear side of the liquid display panel. The light guide plate has an exiting surface facing the liquid crystal panel and a reflecting surface opposite to the exiting surface. The reflecting surface has a plurality of grooves. A light source unit is disposed along at least one side of the light guide plate. The reflecting surface includes a first region formed the groove of a first length and a second region formed with groove of a second length shorter than the first length.

Abstract: An optical unit, a method of manufacturing the same, a backlight assembly having the same and a display device have the same are provided. The optical unit includes a transparent body, a diffusion part and a luminance increasing part. The diffusion part is formed on or in the body to diffuse light. The luminance increasing part includes an embossing pattern formed on the body to increase a luminance of the diffused light when viewed on a plane.

Abstract: The present invention relates to a backlight unit, a manufacturing method thereof, and a display including the backlight unit. According to the present invention, an optical plate, a diffusion sheet, and an optical sheet are integrally formed using adhesives having diffusion beads dispersed therein.

Abstract: An optical plate for a display and a backlight assembly having the optical plate, the optical plate including an optical layer including infrared ray absorbing members that absorb infrared rays in a wavelength range (e.g., about 850 nanometers (nm) to about 1400 nanometers (nm)) used by a remote control of a display device.

Abstract: A light absorption material absorbing a light of a dummy wavelength range or noises is added to a diffusion plate to remove light of an unnecessary wavelength band when using a cold cathode fluorescent lamp (“CCFL”) to enhance color reproducibility. Because the light absorption material is simply included in the diffusion plate, a fabrication or development cost can be reduced, and because a production line is not necessary, costs can be saved.

Abstract: A liquid crystal display comprises a liquid crystal display panel; a light source to provide light to the liquid crystal display panel; and a light controlling assembly disposed between the light source and the liquid crystal display panel, the light controlling assembly comprising at least one first light controlling member, at least one second light controlling member disposed on the first light controlling member and an light curing agent disposed on an edge part between the first light controlling member and the second light controlling member to adhere the first light controlling member and the second light controlling member to each other, the first light controlling member and the second light controlling member having an air layer therebetween.

Abstract: A method of manufacturing an optical plate, includes forming a protrusion on a base film by jetting ink containing a liquid resin on the base film, contacting a light guiding plate to the protrusion, and curing the protrusion which contacts with the light guiding plate.

Abstract: A liquid crystal display device includes a liquid crystal display panel. A light guide plate is disposed at a rear side of the liquid display panel. The light guide plate has an exiting surface facing the liquid crystal panel and a reflecting surface opposite to the exiting surface. The reflecting surface has a plurality of grooves. A light source unit is disposed along at least one side of the light guide plate. The reflecting surface includes a first region formed the groove of a first length and a second region formed with groove of a second length shorter than the first length.

Abstract: An apparatus for forming a pattern for a light guiding plate and a method of manufacturing a light guiding plate. The method of manufacturing a light guiding plate includes preparing a plurality of light guiding plates, each of the light guiding plates being a mother substrate on which optical patterns are formed, disposing molding frames including molding patterns on at least one surface of the light guiding plates, forming optical patterns corresponding to the molding patterns on the light guiding plates and removing the molding frames from the respective light guiding plates. The forming optical patterns includes hydrostatic pressing of the light guiding plates and the molding frames.

Abstract: An optical plate includes a main body plate, and a plurality of lens patterns formed on a first surface of the main body plate, wherein the lens patterns are elongated in a first direction and arranged in parallel with each other in a second direction crossing the first direction, wherein a cross section of the lens patterns form a part of an ellipse shape, the ratio of a semi-major axis to a semi-minor axis of the ellipse shape ranging from about 1.65 to about 1.75.

Abstract: A diffusion plate that is capable of improving a display quality, and a backlight assembly and a liquid crystal display (“LCD”) including the same are disclosed. The diffusion plate includes a base layer including of a first optically transparent resin and a first coating layer provided on a first surface of the base layer. The first coating layer includes a second optically transparent resin and random embossings. The first surface including the embossings has a 60° gloss of 15% or less. A method of forming a diffusion plate includes forming a base layer including a first optically transparent resin, providing random embossings on the base layer and sizing the diffusion plate to predetermined dimensions.

Abstract: An optical member that lends itself to be more cost-effectively manufactured than a conventional optical member is presented. A display device made with the optical member can be thinner than the conventional optical member. The optical member includes a light-incident face that receives light emitted from a lamp positioned at a side of the optical member, a light-exiting face that is in a plane perpendicular to the light-incident face, and a light reflecting face opposite to the light-exiting face. A light-concentrating pattern having a plurality of concentric circles is formed on the light-exiting face. The light-concentrating pattern may be the Fresnel lens pattern. A diffusing pattern for diffusing the light is formed on the light reflecting face. Since patterns are formed on the optical member, additional optical sheet such as a prism sheet, a reflective polarizing sheet, a diffusion sheet, etc., is unnecessary.

Abstract: A mold frame that does not yellow with exposure to ultraviolet radiation is presented. The mold frame includes a first portion, a second portion and a silicone layer. The first portion supports the optical member. The second portion extends from the first member and reflects a light generated from the lamp. The first silicone layer is coated on the second portion. With the silicone layer formed on the mold frame, yellowing is prevented and display quality is improved.

Abstract: An optical unit, a method of manufacturing the same, a backlight assembly having the same and a display device have the same are provided. The optical unit includes a transparent body, a diffusion part and a luminance increasing part. The diffusion part is formed on or in the body to diffuse light. The luminance increasing part includes an embossing pattern formed on the body to increase a luminance of the diffused light when viewed on a plane.

Abstract: A backlight assembly includes a light source and an optical member disposed over the light source and including a surface that has a plurality of lens-shaped portions and at least one prism-shaped portion.

Abstract: An optical plate includes a planar base and a plurality of rounded prisms formed on the planar base. The rounded prisms improve a uniformity of the light passing through the planar base and then irradiate the light having the improved uniformity. A concave peak formed in each of the plurality of rounded prisms of the optical plate scatters the light provided into a rear face of the optical plate so that dark lines and bright lines are not generated on the optical plate. As a result, the optical plate has improved light efficiency.

Abstract: A light guide plate includes a first optical member having a first light path-changing portion to separate a first light portion and a second light portion from a light, and a second optical member having a second light path-changing portion corresponding to the first light path-changing portion. The first optical member has a first refractive index against the first light portion of the light and a second refractive index against the second light portion of the light, and the second optical member has the first refractive index against the first and second light portions. Thus, brightness and brightness uniformity of an image displayed on a display apparatus may be improved, and a number of parts of the display apparatus may be reduced.

Abstract: A diffusion plate having a multi-layered structure, a backlight assembly having the diffusion plate, and a display device having the diffusion plate are presented. The diffusion plate includes a lower skin layer, a core layer, and an upper skin layer. The lower skin layer modulates and mixes light. The core layer is on the lower skin layer to diffuse the light that has passed through the lower skin layer. The upper skin layer is on the core layer. The upper skin layer has a prism patterned on a surface. Therefore, the number of optical sheets is decreased, and luminance uniformity is improved.