公开(公告)号：US07875893B2

公开(公告)日：2011-01-25

申请号：US12564233

申请日：2009-09-22

申请人： Satoshi Seo ,  Daisuke Kumaki ,  Hisao Ikeda ,  Junichiro Sakata

发明人： Satoshi Seo ,  Daisuke Kumaki ,  Hisao Ikeda ,  Junichiro Sakata

IPC分类号： H01L33/00

CPC分类号： H01L27/156 ,  H01L27/322 ,  H01L27/3244 ,  H01L51/0059 ,  H01L51/0071 ,  H01L51/0081 ,  H01L51/5088 ,  H01L2251/5315 ,  H01L2251/558

摘要： Light-emitting elements have a problem that their light-extraction efficiency is low due to scattered light or reflected light inside the light-emitting elements. The light-extraction efficiency of the light-emitting elements needs to be enhanced by a new method. According to the present invention, a light-emitting element includes a first layer generating holes, a second layer including a light-emitting layer for each emission color and a third layer generating electrons between an anode and a cathode, and the thickness of the first layer is different depending on each layer including the light-emitting layer for each emission color. A layer in which an organic compound and a metal oxide are mixed is used as the first layer, and thus, the driving voltage is not increased even when the thickness is increased, which is preferable.

摘要翻译： 发光元件具有由于发光元件内的散射光或反射光而导致其光提取效率低的问题。 需要通过新的方法来增强发光元件的光提取效率。 根据本发明，发光元件包括第一层产生孔，包括用于每种发射颜色的发光层的第二层和在阳极和阴极之间产生电子的第三层，以及第一层 层根据每个发射颜色的包含发光层的各层而不同。 使用其中混合有机化合物和金属氧化物的层作为第一层，因此即使当厚度增加时驱动电压也不会增加，这是优选的。

公开(公告)号：US20100124796A1

公开(公告)日：2010-05-20

申请号：US12693818

申请日：2010-01-26

申请人： Shunpei Yamazaki ,  Kengo Akimoto ,  Junichiro Sakata ,  Yoshiharu Hirakata ,  Norihito Sone

发明人： Shunpei Yamazaki ,  Kengo Akimoto ,  Junichiro Sakata ,  Yoshiharu Hirakata ,  Norihito Sone

IPC分类号： H01L21/28

CPC分类号： H01L27/3244 ,  H01L27/322 ,  H01L27/3276 ,  H01L51/5048 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/52 ,  H01L51/5206 ,  H01L51/5215 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5237 ,  H01L51/5246 ,  H01L51/5253 ,  H01L51/5259 ,  H01L51/56

摘要： Techniques are provided for manufacturing a light-emitting device having high internal quantum efficiency, consuming less power, having high luminance, and having high reliability. The techniques include forming a conductive light-transmitting oxide layer comprising a conductive light-transmitting oxide material and silicon oxide, forming a barrier layer in which density of the silicon oxide is higher than that in the conductive light-transmitting oxide layer over the conductive light-transmitting oxide layer, forming an anode having the conductive light-transmitting oxide layer and the barrier layer, heating the anode under a vacuum atmosphere, forming an electroluminescent layer over the heated anode, and forming a cathode over the electroluminescent layer. According to the techniques, the barrier layer is formed between the electroluminescent layer and the conductive light-transmitting oxide layer.

摘要翻译： 提供了用于制造具有高内部量子效率，消耗较少功率，具有高亮度并且具有高可靠性的发光装置的技术。 这些技术包括形成包含导电透光氧化物材料和氧化硅的导电透光氧化物层，形成阻挡层，其中氧化硅的密度高于导电光上的导电透光氧化物层的密度 形成具有导电透光性氧化物层和阻挡层的阳极，在真空气氛下加热阳极，在加热阳极上形成电致发光层，在电致发光层上形成阴极。 根据该技术，在电致发光层和导电透光性氧化物层之间形成阻挡层。

公开(公告)号：US07646010B2

公开(公告)日：2010-01-12

申请号：US10579804

申请日：2005-11-22

申请人： Sachiko Kawakami ,  Kumi Kojima ,  Satoshi Seo ,  Ryoji Nomura ,  Daisuke Kumaki ,  Hisao Ikeda ,  Junichiro Sakata

发明人： Sachiko Kawakami ,  Kumi Kojima ,  Satoshi Seo ,  Ryoji Nomura ,  Daisuke Kumaki ,  Hisao Ikeda ,  Junichiro Sakata

IPC分类号： H01L35/24 ,  H01L51/00

CPC分类号： H05B33/14 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1014 ,  H01L51/0052 ,  H01L51/006 ,  H01L51/5012 ,  H01L51/5052

摘要： It is an object of the present invention to provide a light-emitting element capable of reducing malfunction due to oxidation and crystallization of a compound. According to one aspect of the present invention, a light-emitting element has a first electrode and a second electrode, a first layer and a second layer formed between the first electrode and the second electrode, wherein the first layer contains an anthracene derivative and a substance that shows electron acceptability to the anthracene derivative, wherein the second layer contains a light emitting substance. According to one aspect of a light-emitting device of the present invention, any one of the above light-emitting elements is used as a pixel or a light source.

摘要翻译： 本发明的目的是提供能够减少化合物的氧化和结晶所引起的故障的发光元件。 根据本发明的一个方面，发光元件具有第一电极和第二电极，形成在第一电极和第二电极之间的第一层和第二层，其中第一层含有蒽衍生物和 显示对蒽衍生物的电子可接受性的物质，其中第二层含有发光物质。 根据本发明的发光装置的一个方面，将上述发光元件中的任一个用作像素或光源。

公开(公告)号：US20090230847A1

公开(公告)日：2009-09-17

申请号：US11989324

申请日：2006-07-19

申请人： Yuji Iwaki ,  Junichiro Sakata ,  Hisao Ikeda ,  Tomoya Aoyama ,  Takaaki Nagata ,  Takahiro Kawakami ,  Satoshi Seo ,  Ryoji Nomura

发明人： Yuji Iwaki ,  Junichiro Sakata ,  Hisao Ikeda ,  Tomoya Aoyama ,  Takaaki Nagata ,  Takahiro Kawakami ,  Satoshi Seo ,  Ryoji Nomura

IPC分类号： H01J1/62

CPC分类号： H01L51/5048 ,  H01L51/0059 ,  H01L51/0062 ,  H01L51/0072 ,  H01L51/0081

摘要： An object of the present invention is to provide a light-emitting element with high luminous efficiency, and a light-emitting element of low-voltage driving. Another object of the present invention is to provide a light-emitting device with low power consumption by using the light-emitting element. Another object of the present invention is to provide an electronic appliance with low power consumption by using the light-emitting device in a display portion. A light-emitting element includes, between a pair of electrodes, a layer containing a composite material of a first organic compound and an inorganic compound and a layer containing a second organic compound being in contact with the layer containing the composite material, wherein the second organic compound does not have a peak of an absorption spectrum in a wavelength region of 450 to 800 nm if the second organic compound is compounded with the inorganic compound.

摘要翻译： 本发明的目的是提供一种发光效率高的发光元件和低电压驱动用发光元件。 本发明的另一个目的是通过使用发光元件来提供具有低功耗的发光装置。 本发明的另一个目的是通过在显示部分中使用发光装置来提供具有低功耗的电子设备。 发光元件在一对电极之间包括含有第一有机化合物和无机化合物的复合材料的层和包含与含有复合材料的层接触的第二有机化合物的层，其中第二 如果第二有机化合物与无机化合物混合，有机化合物在450-800nm的波长区域中不具有吸收光谱的峰值。

公开(公告)号：US07528418B2

公开(公告)日：2009-05-05

申请号：US11707414

申请日：2007-02-16

申请人： Shunpei Yamazaki ,  Junichiro Sakata ,  Takahiro Kawakami ,  Yoshiaki Yamamoto ,  Miki Katayama ,  Kohei Yokoyama ,  Yasuyuki Arai

发明人： Shunpei Yamazaki ,  Junichiro Sakata ,  Takahiro Kawakami ,  Yoshiaki Yamamoto ,  Miki Katayama ,  Kohei Yokoyama ,  Yasuyuki Arai

IPC分类号： H01L33/00

CPC分类号： H01L51/5278 ,  H01L27/3244 ,  H01L27/3281 ,  H01L51/5012 ,  H01L2251/5323

摘要： It is an object of the present invention to provide a light-emitting device with high current efficiency and high display quality, in which a change in luminance with time is suppressed. The light-emitting device is provided with a plurality of light-emitting elements in each of which a plurality of light-emitting units each including at least one light-emitting layer are connected in series between a pair of electrodes. Between one of light-emitting units and the other light-emitting unit, an intermediate conductive layer is provided in the light-emitting unit. The light-emitting layer includes base material which is a compound containing an element belonging to group 2 and an element belonging to group 16 or a compound containing an element belonging to group 12 and an element belonging to group 16, and an impurity element which is an emission center. This structure makes it possible to increase light emission luminance without increasing current density.

摘要翻译： 本发明的目的是提供一种具有高电流效率和高显示质量的发光器件，其中抑制亮度随时间的变化。 发光装置设置有多个发光元件，其中每个包括至少一个发光层的多个发光单元串联连接在一对电极之间。 在一个发光单元和另一个发光单元之间，在发光单元中设置中间导电层。 发光层包括作为含有属于组2的元素和属于第16族的元素的化合物或含有属于第12族的元素和属于第16族的元素的化合物的基质材料，以及杂质元素是 排放中心。 这种结构使得可以在不增加电流密度的情况下增加发光亮度。

公开(公告)号：US07466294B2

公开(公告)日：2008-12-16

申请号：US10786813

申请日：2004-02-25

申请人： Shunpei Yamazaki ,  Hiromichi Godo ,  Junichiro Sakata ,  Kaoru Tsuchiya

发明人： Shunpei Yamazaki ,  Hiromichi Godo ,  Junichiro Sakata ,  Kaoru Tsuchiya

IPC分类号： G09G3/32

CPC分类号： H01L27/322 ,  H01L27/3211 ,  H01L51/5262 ,  H01L2251/5323 ,  H01L2251/558

摘要： When materials of a cathode and an anode are transparent and a substrate with transparency is used for a substrate and a sealing substrate, luminescence from a layer including an organic compound can simultaneously perform two ways of display: luminescence passing a cathode and luminescence transmitted in an anode. However, interference effect by an optical distance difference results in difference in optical characteristics (such as a color tone) between luminescence from a top surface and luminescence from a bottom surface. According to the present invention, a light-emitting device having luminescence from a top surface and luminescence from a bottom surface provides both luminescence to a top surface and luminescence to a bottom surface with an image display having an uniform color tone and of high quality by regulating a film thickness of a transparent conductive film disposed on a cathode side and a film thickness of a cathode.

摘要翻译： 当阴极和阳极的材料是透明的并且具有透明度的基板用于基板和密封基板时，来自包括有机化合物的层的发光可以同时进行两种显示方式：通过阴极的发光和在 阳极。 然而，由于光距离的干涉效应导致来自顶面的发光与来自底面的发光之间的光学特性（例如色调）的差异。 根据本发明，具有来自顶表面的发光和来自底表面的发光的发光器件通过具有均匀色调的图像显示器和高质量的图像显示器向顶面提供发光和发光，并且通过 调节设置在阴极侧的透明导电膜的膜厚度和阴极的膜厚度。

公开(公告)号：US20080122350A1

公开(公告)日：2008-05-29

申请号：US11984357

申请日：2007-11-16

申请人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

发明人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC分类号： H01L27/28 ,  B05D5/12

CPC分类号： H01L51/5203 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/008 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0087 ,  H01L51/009 ,  H01L51/5012

摘要： A light-emitting element is provided which has a light-emitting layer between a first electrode and a second electrode, where the light-emitting layer has a first layer and a second layer; the first layer contains a first organic compound and a third organic compound; the second layer contains a second organic compound and the third organic compound; the first layer is provided to be in contact with the second layer on the first electrode side; the first organic compound is an organic compound with an electron transporting property; the second organic compound is an organic compound with a hole transporting property; the third organic compound has an electron trapping property; and light emission from the third organic compound can be obtained when voltage is applied to the first electrode and the second electrode so that the potential of the first electrode is higher than that of the second electrode.

摘要翻译： 提供一种在第一电极和第二电极之间具有发光层的发光元件，其中发光层具有第一层和第二层; 第一层包含第一有机化合物和第三有机化合物; 第二层包含第二有机化合物和第三有机化合物; 第一层设置成与第一电极侧的第二层接触; 第一有机化合物是具有电子传输性质的有机化合物; 第二有机化合物是具有空穴传输性的有机化合物; 第三有机化合物具有电子捕获性; 并且当对第一电极和第二电极施加电压使得第一电极的电位高于第二电极的电位时，可以获得来自第三有机化合物的发光。

公开(公告)号：US20070278947A1

公开(公告)日：2007-12-06

申请号：US11807495

申请日：2007-05-29

申请人： Junichiro Sakata

发明人： Junichiro Sakata

IPC分类号： H01J1/62 ,  H01J63/04

CPC分类号： C09K11/612 ,  C09K11/574 ,  H05B33/14

摘要： It is an object of the present invention to provide a manufacturing method for a light-emitting element that emits light at a plurality of emission wavelength peaks. Furthermore, it is an object of the present invention to provide a light-emitting device and electronic device in which color rendering is high. A manufacturing method for a light-emitting element includes the following steps: a step for forming a first electrode, a step for forming a light-emitting layer over the first electrode, a step for forming a second electrode over the light-emitting layer, and a step for performing heat treatment on the light-emitting layer; where the step for forming the light-emitting layer includes a step for forming a layer containing a host material and a layer containing a material acting as a luminescent center so that the two layers are in contact with each other.

摘要翻译： 本发明的目的是提供一种发射多个发射波长峰值的发光元件的制造方法。 此外，本发明的目的是提供一种显色性高的发光装置和电子装置。 发光元件的制造方法包括以下步骤：形成第一电极的步骤，在第一电极上形成发光层的步骤，在发光层上形成第二电极的步骤， 以及对所述发光层进行热处理的工序; 其中形成发光层的步骤包括形成含有主体材料的层和含有作为发光中心的材料的层的步骤，使得两层彼此接触。

公开(公告)号：US20070221933A1

公开(公告)日：2007-09-27

申请号：US11578086

申请日：2005-04-21

申请人： Yasuo Nakamura ,  Hisao Ikeda ,  Junichiro Sakata

发明人： Yasuo Nakamura ,  Hisao Ikeda ,  Junichiro Sakata

IPC分类号： H01L33/00

CPC分类号： H01L51/5052 ,  H01L27/3209 ,  H01L51/0067 ,  H01L51/5092 ,  H01L51/5278

摘要： It is an object of the present invention to provide a light-emitting element and a light-emitting device, in which a plurality of electroluminescent layers are stacked with a charge generation layer interposed therebetween between a pair of electrodes that are opposed to each other, and for which the charge generation layer can be formed on the electroluminescent layer by sputtering without damaging the electroluminescent layer. A material that is not easily etched is used for, of the electroluminescent layer, the closest layer to the charge generation layer formed by sputtering on the electroluminescent layer. Specifically, a benzoxazole derivative or a pyridine derivative is used.

摘要翻译： 本发明的目的是提供一种发光元件和发光器件，其中多个电致发光层在它们彼此相对的一对电极之间层叠有电荷产生层， 并且可以通过溅射在电致发光层上形成电荷产生层而不损坏电致发光层。 不易蚀刻的材料用于电致发光层中与电致发光层上通过溅射形成的电荷产生层最接近的层。 具体地说，使用苯并恶唑衍生物或吡啶衍生物。

公开(公告)号：US20070205423A1

公开(公告)日：2007-09-06

申请号：US11680287

申请日：2007-02-28

申请人： Shunpei Yamazaki ,  Junichiro Sakata ,  Tomoya Aoyama ,  Kohei Ohshima ,  Rie Matsubara ,  Hideaki Kuwabara

发明人： Shunpei Yamazaki ,  Junichiro Sakata ,  Tomoya Aoyama ,  Kohei Ohshima ,  Rie Matsubara ,  Hideaki Kuwabara

IPC分类号： H01L27/32

CPC分类号： H01L27/3225 ,  H01L27/286 ,  H01L27/3213 ,  H01L27/322 ,  H01L27/3244 ,  H01L27/3281 ,  H01L2251/5315 ,  H01L2251/5323

摘要： It is an object to provide a thin-type full-color display device with the long lifetime, inexpensively, in which desired emission luminance and desired color purity can be obtained at a low voltage. In a light-emitting device capable of full-color display, among a plurality of light-emitting elements emitting different emission colors (for example, colors of red (R), green (G), and blue (B)), at least one of the light-emitting elements of an emission color is a light-emitting element including an organic compound (an organic EL element), and the other light-emitting element of an emission color is a light-emitting element using an inorganic material as a light-emitting layer or a fluorescent layer (an inorganic EL element). It is to be noted that the organic EL element and the inorganic EL element are formed over the same substrate.

摘要翻译： 本发明的目的是提供一种寿命长，成本低廉的薄型全色显示装置，其中可以在低电压下获得期望的发光亮度和期望的色纯度。 在能够进行全色显示的发光装置中，在发射不同发光颜色（例如，红色（R），绿色（G）和蓝色（B）的颜色）的多个发光元件中至少 发光颜色的发光元件之一是包含有机化合物（有机EL元件）的发光元件，发光颜色的其他发光元件是使用无机材料的发光元件作为 发光层或荧光层（无机EL元件）。 应注意，有机EL元件和无机EL元件形成在相同的基板上。