公开(公告)号：US20030098648A1

公开(公告)日：2003-05-29

申请号：US10301639

申请日：2002-11-22

申请人： Hitachi, Ltd. and Hitachi Device Engineering Co. Ltd.

发明人： Hiroaki Miwa ,  Katsuhiko Ishii ,  Setsuo Kobayashi ,  Yuji Mori

IPC分类号： H05B033/00

CPC分类号： H01L51/5259 ,  H01L51/5243 ,  H01L51/5246 ,  H01L51/5253

摘要： Electroluminescence elements mounted on a substrate of an OLED display device are sealed by a protective film made of synthetic resin with chemical reaction curing in place of a sealing can. The protective film is formed such that a thickness thereof is equal to or larger than a thickness of the substrate. Alternatively, the protective film is formed by laminating a plurality of resin films which differ in one of the water absorption ratio, the elastic modulus and the hardness. With respect to the protective film which is formed of a plurality of laminated films, compared to the protective film at the electroluminescence element side, the protective film which covers the former protective film has the water absorption ratio, the elastic modulus or the hardness larger than the water absorption ratio, the elastic modulus or the hardness of the former protective film. Due to such a constitution, it is possible to reduce the thickness of the OLED display device without damaging the moisture-proof property of the electroluminescence elements.

摘要翻译： 安装在OLED显示装置的基板上的电致发光元件由具有化学反应固化的合成树脂制的保护膜代替密封罐密封。 保护膜形成为使得其厚度等于或大于基板的厚度。 或者，通过层叠多个吸水率，弹性模量和硬度之一不同的树脂膜来形成保护膜。 对于由多个层压膜形成的保护膜，与电致发光元件侧的保护膜相比，覆盖前一保护膜的保护膜具有吸水率，弹性模量或硬度大于 前者保护膜的吸水率，弹性模量或硬度。 由于这样的结构，可以在不损害电致发光元件的防潮性的情况下减小OLED显示装置的厚度。