发明名称 |
Method for manufacturing a light-emitting device |
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 (18) on the surface of the light-emitting element (10, 14, 15) 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 (18) is smaller than the light wavelength;
2) a pitch of the roughened surface (18) is irregular; and
3) positions of the top and bottom of the roughened surface (18) 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 (10, 14, 15) 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 microphase-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 (18) of the light-emitting element using the remaining phase as an etching mask. |
申请公布号 |
EP1324399(B1) |
申请公布日期 |
2011.08.10 |
申请号 |
EP20020258982 |
申请日期 |
2002.12.27 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
ASAKAWA, KOJI;FUJIMOTO, AKIRA;SUGIYAMA, HITOSHI;OHASHI,KENICHI;SUZUKI, KEIJI;TONOTANI, JUNICHI |
分类号 |
H01L33/00;H01L21/027;H01L33/22 |
主分类号 |
H01L33/00 |
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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