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    • 86. 发明授权
    • Organic light emitting display apparatus
    • 有机发光显示装置
    • US07619244B2
    • 2009-11-17
    • US11435881
    • 2006-05-18
    • Hajime MurakamiMasao ShimizuSukekazu ArataniMasahiro Tanaka
    • Hajime MurakamiMasao ShimizuSukekazu ArataniMasahiro Tanaka
    • H01L35/24H01L51/00
    • H01L51/5234H01L51/5048H01L2251/5315
    • The present invention provides a top emission type organic light emitting display apparatus in which manufacture it is possible to prevent the organic film from being oxidized when the upper transparent electrode is formed, and which is capable of emitting light at a low voltage. This organic light emitting display apparatus includes an organic light emitting layer and an upper electrode and a lower electrode sandwiching the said organic light emitting layer between them, and is of a structure in which the light emitted from the organic light emitting layer is taken out from the upper electrode side, wherein a buffer layer mostly made of an oxide with its Gibbs free energy generated at around the melting point being lower than −300 kJ/mol is provided between the organic light emitting layer and the upper electrode, the side of the organic layer which is in contact with the buffer layer being doped with an electron donative dopant.
    • 本发明提供了一种顶部发射型有机发光显示装置,其中制造时可以防止有机膜在形成上部透明电极时被氧化,并且能够以低电压发光。 该有机发光显示装置包括有机发光层和将上述有机发光层夹在其间的上电极和下电极,其结构是将从有机发光层发射的光从 上部电极侧,在有机发光层与上部电极之间,设置有主要由氧化物构成的缓冲层,其氧化物在熔点附近产生的吉布斯自由能低于-300kJ / mol 与缓冲层接触的有机层掺杂有电子给体掺杂剂。
    • 89. 发明申请
    • Organic EL display device
    • 有机EL显示装置
    • US20080136339A1
    • 2008-06-12
    • US11984161
    • 2007-11-14
    • Toshiyuki MatsuuraMasahiro TanakaSukekazu ArataniMasao Shimizu
    • Toshiyuki MatsuuraMasahiro TanakaSukekazu ArataniMasao Shimizu
    • G09G3/00H01L51/54
    • H01L51/5052H01L27/3244H01L51/5234H01L2251/5315
    • The invention allows a top-emission-type organic EL display device to use a chemically stable conductive film containing ITO for forming a lower electrode of an organic EL layer. The organic EL layer includes an electron injection layer, an electron transport layer, a light emission layer, a hole transport layer and a hole injection layer. An upper electrode which constitutes a transparent electrode is formed of an IZO film. A lower electrode adopts the two-layered structure consisting of a lower layer made of Al or an Al alloy having high reflectance and an upper layer formed of a chemically stable ITO film. To enable the injection of electrons from the ITO film which constitutes the lower electrode, the electron injection layer is formed using a film which is acquired by co-depositing Li and Alq3 at a molecular ratio of 3:1. Due to such a constitution, electrons can be injected from the ITO film thus realizing the top-emission-type organic EL display device.
    • 本发明允许顶部发射型有机EL显示装置使用含有ITO的化学稳定的导电膜来形成有机EL层的下电极。 有机EL层包括电子注入层,电子传输层,发光层,空穴传输层和空穴注入层。 构成透明电极的上电极由IZO膜形成。 下电极采用由具有高反射率的Al或Al合金制成的下层和由化学稳定的ITO膜形成的上层构成的双层结构。 为了能够从构成下电极的ITO膜注入电子,使用通过以3:1的分子比共沉积Li和Alq3而获得的膜形成电子注入层。 由于这样的结构,可以从ITO膜注入电子,从而实现顶部发射型有机EL显示装置。