| 申请日期 | 2025-06-28 | 申请号 | US12273745 |
| 公开（公告）号 | US20090135109A1 | 公开（公告）日 | 2009-05-28 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Tadahiro Ohmi; Tetsuya Goto; Takaaki Matsuoka | ||
| 简介 | In an organic EL element having a transparent conductive electrode and a cathode opposed to the transparent conductive electrode, the cathode includes a film of a rare earth element that can be sputtered. The film of the rare earth element having a low work function, for example, a LaB6 film, can be formed uniformly over a wide area on an electron injection layer by a rotary magnet sputtering apparatus. | ||
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