Abstract: A computer-implemented method of categorizing a customer includes steps of selecting a measure on which the status of the customer is to be analyzed, selecting a calculation period and selecting a comparison method. A lifecycle factor may then be computed, the lifecycle factor being related to both the size and the growth of the customer according to the selected measure. Both the size and growth are determined over two selected calculation periods using the selected comparison method. Selected customers may then be categorized into one of a plurality of lifecycle stages by evaluating a plurality of categorization criteria, at least one of the plurality of categorization criteria including the computed lifecycle factor. For example, the lifecycle stages may include the stages of New, Growing, Stable, Declining, Defected and/or Insignificant.

Abstract: A method for manufacturing a polarizer sheet includes: preparing a light transmission film where a metal thin film is formed, and forming metal patterns by irradiating a polarized pulse laser beam onto a plurality of regions of the metal thin film.

Abstract: A backlight unit capable of enhancing a luminance of an LCD is provided. The backlight unit includes a lamp for emitting light, a light guide plate for guiding the light emitted from the lamp, and an optical sheet disposed on a path of the light emitted from the light guide plate. The optical sheet includes a prism sheet having a plurality of prisms of which apex angles are obtuse, and a reflective polarizer film for reflecting and transmitting the light emitted from the prism sheet according to polarization components.