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    • 32. 发明授权
    • Method of driving organic EL device and display device
    • 驱动有机EL器件和显示器件的方法
    • US07671825B2
    • 2010-03-02
    • US11361364
    • 2006-02-24
    • Norikazu UchiyamaMasaaki OkunakaMasahiro NishizawaHidetsugu MatsukiyoYuko Matsumoto
    • Norikazu UchiyamaMasaaki OkunakaMasahiro NishizawaHidetsugu MatsukiyoYuko Matsumoto
    • G09G3/30
    • G09G3/3233G09G3/3216G09G3/3225G09G2300/0842G09G2310/0256G09G2310/06G09G2320/043
    • According to one aspect of the present invention, it is possible to sufficiently perform the discharging of charge without lowering the light emitting efficiency of an organic EL device and hence, the device can exhibit the light emitting efficiency higher than a conventional organic EL device and, at the same time, can prevent the degradation of the device. As an organic EL device to which the present invention is applied, on a glass transparent substrate, a transparent electrode, a hole injection layer and a hole transport layer which function as a hole transport function layer, a light emitting layer, an electron transport function layer, and a metal electrode are formed sequentially, and a drive power sources are connected to the transparent electrode and the metal electrode. Further, from the drive power source, as an applying voltage, a voltage which is obtained by overlapping any one of a sine wave, a pulse wave, a triangle wave and a sawtooth wave having two cycles or more to a drive signal or a voltage which is obtained by overlapping a sine wave having two cycles or more to the drive signal is supplied.
    • 根据本发明的一个方面,可以在不降低有机EL器件的发光效率的情况下充分地进行电荷的放电,因此该器件可以表现出高于常规有机EL器件的发光效率, 同时可以防止设备的劣化。 作为应用本发明的有机EL器件,在玻璃透明基板上,透明电极,空穴注入层和作为空穴传输功能层的空穴传输层,发光层,电子传输功能 层和金属电极,并且驱动电源连接到透明电极和金属电极。 此外,从驱动电源,作为施加电压,通过将具有两个周期以上的正弦波,脉搏波,三角波和锯齿波中的任何一个与驱动信号或电压 提供通过使具有两个周期以上的正弦波与驱动信号重叠而获得的。
    • 33. 发明授权
    • Organic EL display device
    • 有机EL显示装置
    • US07332854B2
    • 2008-02-19
    • US11378281
    • 2006-03-20
    • Kazuhiko KaiMasaaki OkunakaNaoyuki Ito
    • Kazuhiko KaiMasaaki OkunakaNaoyuki Ito
    • H01J1/88H01J1/90H01J19/42H01J1/54
    • H01L27/3246
    • In an organic EL display device comprising a substrate, a plurality of pixel regions in each of which a first electrode, a light emitting material layer, and a second electrode are laminated in this order above the substrate, and a bank film formed above the substrate to separate respective one of the pixel regions from another of the pixel regions adjacent thereto, wherein the bank film has a plurality of openings exposing upper surfaces of the first electrodes to the light emitting material layers in the respective pixel regions, and the second electrode is formed over the a plurality of openings of the bank film in common with the pixel regions, the present invention forms the bank film of an inorganic material and shapes a side wall thereof lying around each of the openings thereof to be sloped at an angle less than 85 degrees (°) with respect to a principal surface of the substrate in order to prevent the deterioration of the light emitting material layer and disconnection of the second electrode at steps of bank film lying in the vicinity of the openings thereof.
    • 在包括基板的有机EL显示装置中,在基板上方依次层叠有第一电极,发光材料层和第二电极的多个像素区域,以及形成在基板的上方的堤膜 将相应的一个像素区域与与其相邻的像素区域中的另一个分离,其中该堤膜具有将第一电极的上表面暴露于各个像素区域中的发光材料层的多个开口,并且第二电极为 与像素区域共同形成在堤膜的多个开口上方,本发明形成无机材料的堤膜,并使位于其每个开口周围的侧壁形成为倾斜的角度小于 相对于基板的主面为85度(°),以防止发光材料层的劣化和断开 位于其开口附近的堤膜的台阶处的第二电极。