发明授权
US08310152B2 Organic EL device and EL display panel having a low driving voltage and high light emitting frequency, and method for manufacturing
有权
具有低驱动电压和高发光频率的有机EL器件和EL显示面板及其制造方法
- 专利标题： Organic EL device and EL display panel having a low driving voltage and high light emitting frequency, and method for manufacturing
- 专利标题（中）： 具有低驱动电压和高发光频率的有机EL器件和EL显示面板及其制造方法
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申请号： US12741236申请日： 2008-12-02
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公开(公告)号： US08310152B2公开(公告)日： 2012-11-13
- 发明人: Shuhei Nakatani , Hidehiro Yoshida
- 申请人： Shuhei Nakatani , Hidehiro Yoshida
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Greenblum & Bernstein, P.L.C.
- 优先权： JP2007-318978 20071210
- 国际申请： PCT/JP2008/003563 WO 20081202
- 国际公布： WO2009/075075 WO 20090618
- 主分类号： H01L51/52
- IPC分类号： H01L51/52 ; H01L51/56
摘要：
Disclosed is a method for manufacturing an organic EL device which comprises a hole injection layer having a flat surface that is not contaminated. Specifically disclosed method for manufacturing an organic EL device, which comprises a step of forming an anode on a substrate; a step of forming a hole injection layer on the anode; a step of forming an inorganic film on the substrate and the hole injection layer; a step of forming a bank on the inorganic film in such a manner that at least a part of the inorganic film formed on the hole injection layer is exposed; a step of etching the exposed inorganic film by using the bank as a mask so that the hole injection layer is exposed therefrom; and a step of forming an organic light-emitting layer by applying an organic light-emitting material onto the exposed hole injection layer. The hole injection layer contains tungsten oxide or molybdenum oxide.