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    • 94. 发明授权
    • Light-emitting device and method for manufacturing the same
    • 发光装置及其制造方法
    • US06825056B2
    • 2004-11-30
    • US10330086
    • 2002-12-30
    • Koji AsakawaAkira FujimotoHitoshi SugiyamaKenichi OhashiKenji SuzukiJunichi Tonotani
    • Koji AsakawaAkira FujimotoHitoshi SugiyamaKenichi OhashiKenji SuzukiJunichi Tonotani
    • H01L2100
    • H01L33/22H01L21/0271
    • A nanometer size roughened structure is formed on a surface of a light-emitting element, and luminous efficiency is improved. The roughened structure is formed into the following shape to change refractive index smoothly: (1) the mean diameter of projections on the roughened surface is smaller than the light wavelength; (2) a pitch of the roughened surface is irregular; and (3) positions of the top and bottom of the roughened surface are distributed from their mean values within the light wavelength. The surface of such light-emitting element is obtained by forming a thin film on the surface of the light-emitting element using a block or graft copolymer comprising resin composition and forms a self-assembled microphase-separated structure; selectively removing at least one phase of the microphase-separated structure; and etching the surface of the light-emitting element using the remaining phase as an etching mask.
    • 在发光元件的表面上形成纳米尺寸的粗糙结构,并提高发光效率。 粗糙结构形成为以下形状以平滑地改变折射率:(1)粗糙表面上的突起的平均直径小于光波长; (2)粗糙表面的间距不规则; 和(3)粗糙表面的顶部和底部的位置从它们在光波长内的平均值分布。 这种发光元件的表面通过使用包含树脂组合物的嵌段或接枝共聚物在发光元件的表面上形成薄膜而获得,并形成自组装的微相分离结构; 选择性地除去微相分离结构的至少一个相; 并使用剩余的相作为蚀刻掩模蚀刻发光元件的表面。