| 摘要 |
PURPOSE: A back light system for a liquid crystal display is provided to improve a productivity and a competitive price as well as a problem related with a visual field of a brightness. CONSTITUTION: A back light system for a liquid crystal display includes a back light system having a light source section(21), a pumping plate(22), a reflective film(23), an anisotropy diffusing film(24), and a condensing film(25), and a liquid crystal panel section(26). The light source section(21) includes a lamp(27) and a supporting part(28) for the lamp(27), and arranged along a side of the pumping plate(22), or an axis of y. On the pumping plate(22), a lenticular layer(29) composed of a fine triangle in a sectional view is formed. The lenticular layer(29) is made to have an angle at degree 70 to 110 from the arranged direction of the light source section(21). The condensing film(25) has a lenticular layer(38) composed of fine triangles with a flat bottom. A distance between each top point of the triangles is within 70 micrometer. And the lenticular layer(38) is made to have a parallel arrangement with the light source section(21), or an axis of y. |
