| 摘要 |
PURPOSE: An illuminator for a back light source of a crystal display panel is provided to prevent strength of light from dropping caused by translucent ink and to supply equal illumination by diffusing light. CONSTITUTION: An illuminator for a back light source in a crystal display panel comprises a transparent light plate(11) transferring light induced from a side portion; a diffusing plate(13) mounted on a surface of the light plate; a reflecting plate(15) installed on the light palate corresponding to the diffusing plate; and a dot(19) arranged on a portion of the reflecting plate by having a ring shape. The dot changes a refection angle of the light on the light plate. Thereby, the illuminator for the back light source in the crystal display panel prevents strength of the light from dropping caused by translucent ink. Moreover, the illuminator for the back light source in the crystal display panel supplies equal illumination by diffusing the light.
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