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2. 发明授权

US06180960B2 Surface light-emitting element and self-scanning type light-emitting device 有权
标题翻译：表面发光元件和自扫描型发光元件
公开(公告)号：US06180960B2
公开(公告)日：2001-01-30
申请号：US09043106
申请日：1998-11-04
申请人： Yukihisa Kusuda , Seiij Ohno , Shunsuke Ohtsuka
发明人： Yukihisa Kusuda , Seiij Ohno , Shunsuke Ohtsuka
IPC分类号： H01L3300
CPC分类号： B41J2/45 , B41J2/451 , B41J2002/453 , H01L27/153 , H01L33/0016 , H01L33/145 , H01L33/20 , H01L33/38 , H01L33/385 , Y10S257/918
摘要： A surface light-emitting element having improved external light emission efficiency and a self-scanning light-emitting device using this surface light-emitting element are provided. To improve external light-emission efficiency, the light-emitting center is shifted to an area where there is no light shielding layer thereon. To achieve this, an insulating layer is provided on the electrode portion above which there is a light-shielding layer at a portion making contact with the semiconductor layer thereunder so as to prevent the injected current from flowing from that electrode portion. To increase the amount of light emission, the peripheral length of the electrode is increased. With an electrode of the same area, the larger the peripheral length, the larger becomes the amount of light emission because the current injected from the electrode is distributed evenly over the entire surface, causing light to emit evenly. When the surface light-emitting element is a surface light-emitting thyristor of the PNPN structure, it is necessary to have such a construction that part of the injected current is prevented from flowing toward the gate electrode to improve external light emission efficiency. The self-scanning light-emitting device of this invention is accomplished by using this type of surface light-emitting element.
摘要翻译：提供具有改善的外部发光效率的表面发光元件和使用该表面发光元件的自扫描型发光装置。为了提高外部发光效率，发光中心转移到其上没有遮光层的区域。为了实现这一点，在电极部分上设置绝缘层，在其上方，在与其下面的半导体层接触的部分处具有遮光层，以防止注入的电流从该电极部分流出。为了增加发光量，电极的周长增加。对于具有相同面积的电极，周长越长，由于从电极注入的电流均匀分布在整个表面上，导致光均匀发射，所以发光量越大。当表面发光元件是PNPN结构的表面发光晶闸管时，需要具有这样的结构，即防止部分注入电流流向栅电极以提高外部发光效率。本发明的自扫描型发光装置通过使用这种类型的表面发光元件来实现。

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