摘要:
The present invention relates to a diffusion sheet, a method for manufacturing the same, and a backlight unit using the same for a liquid crystal display. The diffusion sheet of the present invention is configured to have at least two or more fibrous layers alternately embedded within a matrix, and arranged at the combination of at least two or more angles of 0°, 90° and ±θ between successive layers, each fibrous layer having fibers arranged in parallel to each other in one direction, so that the diffusion sheet promotes two-dimensional diffusion distributions, thus uniformly diffusing the light irrespective of the initial angle and direction, to a method for manufacturing a diffusion sheet wherein a matrix component and a fibrous layer component are simultaneously extruded to allow fibrous layers to be arranged in situ in a matrix, the present invention has the benefit of simultaneously shortening the process and thinning the thickness. Furthermore, by using the diffusion sheet according to the present invention, a liquid crystal display backlight unit having high opacity and improved light diffusion property can be provided.
摘要:
The present invention relates to a method for manufacturing in-situ oriented-fiber composite material, the method simultaneously extruding, using thermoplastic members, matrix ingredients and fiber ingredients, and passing same through a nozzle of a set cross-sectional shape, weight and fill ratio of the fiber ingredient, thereby aligning the fiber ingredients within the matrix in one direction one single continuous step, and thus, by means of the production method, the process is shortened, the thinning of the thickness of the oriented-fiber composite material is attained, and particularly, filling, distribution and reinforcement of the fiber within the matrix can be effectively controlled and a high density of the fiber can be attained. Furthermore, the present invention provides an element exhibiting superbly effective reflective polarization by controlling so that the lengthwise refractive index of the matrix is lower than the lengthwise refractive index of the fiber ingredients in the oriented-fiber composite material, thus the element can replace conventional reflective polarizing light film and can be effectively used as an optical element in other fields.