发明名称 |
Light-emitting device and method for manufacturing the same |
摘要 |
A nanometer size roughened structure is formed on a surface of a light-emitting element, and luminous efficiency is improved. The roughened structure on the surface of the light-emitting element of the invention is formed into the following shape such that the refractive index smoothly changes: (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 in order to give a smooth gradient of the refractive index. The surface of such light-emitting element is obtained by forming a thin film on the surface of the light-emitting element using a resin composition which contains a block copolymer or graft copolymer and forms a micophase-separated structure in a self-organization manner; selectively removing at least one phase of the microphase-separated structure of the thin film formed on the surface; and etching the surface of the light-emitting element using the remaining phase as an etching mask. |
申请公布号 |
US2005112886(A1) |
申请公布日期 |
2005.05.26 |
申请号 |
US20040976987 |
申请日期 |
2004.11.01 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
ASAKAWA KOJI;FUJIMOTO AKIRA;SUGIYAMA HITOSHI;OHASHI KENICHI;SUZUKI KENJI;TONOTANI JUNICHI |
分类号 |
H01L33/22;(IPC1-7):B32B1/00;H01L21/302;H01L21/461 |
主分类号 |
H01L33/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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