公开(公告)号：US20100007272A1

公开(公告)日：2010-01-14

申请号：US12499839

申请日：2009-07-09

申请人： Hironori Toyoda ,  Masahiro Tanaka ,  Masaaki Okunaka ,  Masakazu Gunji

发明人： Hironori Toyoda ,  Masahiro Tanaka ,  Masaaki Okunaka ,  Masakazu Gunji

IPC分类号： H01L51/52

CPC分类号： H01L51/5203 ,  H01L27/3211 ,  H01L27/3244 ,  H01L51/0072 ,  H01L51/0079 ,  H01L51/5228

摘要： In a top emission type organic EL display device, brightness gradient in a screen is reduced while keeping a screen brightness. A reflection film is formed under a lower electrode and the light from an organic EL layer is emitted through an upper electrode. Light absorption of the upper electrode is larger on the side of a shorter wavelength. When a film thickness of the upper electrode is enlarged in order to reduce the brightness gradient in a screen, the film thicknesses of the upper electrodes for a red pixel and a green pixel are enlarged without enlarging the film thickness of the upper electrode for a blue pixel. This makes it possible to reduce the brightness gradient as well as to suppress the light absorption of the upper electrode.

摘要翻译： 在顶部发射型有机EL显示装置中，屏幕亮度降低，同时保持屏幕亮度。 反射膜形成在下电极下方，并且来自有机EL层的光通过上电极发射。 上电极的光吸收在较短波长的一侧较大。 为了降低屏幕的亮度梯度，当上部电极的膜厚度被放大时，用于红色像素和绿色像素的上部电极的膜厚度增大，而不增加用于蓝色的上部电极的膜厚度 像素。 这使得可以降低亮度梯度以及抑制上电极的光吸收。

公开(公告)号：US08237353B2

公开(公告)日：2012-08-07

申请号：US12499839

申请日：2009-07-09

申请人： Hironori Toyoda ,  Masahiro Tanaka ,  Masaaki Okunaka ,  Masakazu Gunji

发明人： Hironori Toyoda ,  Masahiro Tanaka ,  Masaaki Okunaka ,  Masakazu Gunji

IPC分类号： H01L51/52

CPC分类号： H01L51/5203 ,  H01L27/3211 ,  H01L27/3244 ,  H01L51/0072 ,  H01L51/0079 ,  H01L51/5228

摘要： In a top emission type organic EL display device, brightness gradient in a screen is reduced while keeping a screen brightness. A reflection film is formed under a lower electrode and the light from an organic EL layer is emitted through an upper electrode. Light absorption of the upper electrode is larger on the side of a shorter wavelength. When a film thickness of the upper electrode is enlarged in order to reduce the brightness gradient in a screen, the film thicknesses of the upper electrodes for a red pixel and a green pixel are enlarged without enlarging the film thickness of the upper electrode for a blue pixel. This makes it possible to reduce the brightness gradient as well as to suppress the light absorption of the upper electrode.

摘要翻译： 在顶部发射型有机EL显示装置中，屏幕亮度降低，同时保持屏幕亮度。 反射膜形成在下电极下方，并且来自有机EL层的光通过上电极发射。 上电极的光吸收在较短波长的一侧较大。 为了降低屏幕的亮度梯度，当上部电极的膜厚度被放大时，用于红色像素和绿色像素的上部电极的膜厚度增大，而不增加用于蓝色的上部电极的膜厚度 像素。 这使得可以降低亮度梯度以及抑制上电极的光吸收。