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PRISM SHEET CAPABLE OF PREVENTING THE FAULT OF PRISM DUE TO PRESSURE BY DISPERSING THE PRESSURE APPLIED IN PRISM INTO THE WHOLE PRISM FORMED IN THE PRISM SHEET, A BACKLIGHT DEVICE FOR COMPRISING THE SAME AND A LIQUID CRYSTAL DISPLAY DEVICE
PRISM SHEET CAPABLE OF PREVENTING THE FAULT OF PRISM DUE TO PRESSURE BY DISPERSING THE PRESSURE APPLIED IN PRISM INTO THE WHOLE PRISM FORMED IN THE PRISM SHEET, A BACKLIGHT DEVICE FOR COMPRISING THE SAME AND A LIQUID CRYSTAL DISPLAY DEVICE
PURPOSE: A prism sheet, a backlight device for comprising the same and a liquid crystal display device are provided to prevent the generation of the moire fringe by keeping the altitude difference of the adjacent prisms with 1.2-1.5m.;CONSTITUTION: Prism sheets(120, 130) are composed of a base film and a plurality of prisms(122a, 122b) formed in the base film. The one side of prism is formed into a triangular shape. The prism is expanded from one side to other side of the base film. Adjacent prisms have the different height. The altitude difference between the adjacent prisms is 1.2-1.5m. The height of the adjacent prisms is respective 27m and 25.5-25.8m. The width of bottom side of the section triangle of one prism is dissimilar according to location.;COPYRIGHT KIPO 2010
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