| 摘要 |
PURPOSE: An optical sheet, a backlight unit having the same and a liquid crystal display device are provided to secure a first support layer having a thin thickness by forming a second support layer having a thick thickness. CONSTITUTION: An optical pattern layer(116a) is formed in the upper part of a first support layer(112a). A second support layer(114a) is formed between the first support layer and the optical pattern layer. A prism pattern(117) is protruded from the first support layer. The prism pattern has two tilt surfaces(117a,117b). |
