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公开(公告)号：US20150171360A1
公开(公告)日：2015-06-18
申请号：US14403681
申请日：2013-05-30
Inventor： Varutt Kittichungchit , Kazuyuki Yamae
IPC: H01L51/50
CPC classification number: H01L51/5044 , H01L51/504 , H01L51/5278
Abstract: The disclosure relates to an organic electroluminescence element including an organic layer including multiple light-emitting layers. The light-emitting layers include a blue light-emitting layer including a blue light-emitting dopant. In a case where emission color of the organic electroluminescence element operated at an operation temperature for a stable state is represented in a CIE1931 chromaticity coordinate system, when coordinate point A of the emission color at an early stage of use and coordinate point B of the emission color deteriorated by use are represented by (x1, y1) and (x2, y2) respectively, a relation of y2≧y1 is satisfied. When amounts of changes in x and y values from coordinate point A to coordinate point B are represented by equations of Δx=x2−X1 and Δy=y2−y1 respectively, a relation of Δy≧Δx is satisfied. It can be made difficult to perceive change in emission color and lifetime can be prolonged
Abstract translation: 本公开涉及包括包含多个发光层的有机层的有机电致发光元件。 发光层包括蓝色发光掺杂剂蓝色发光层。 在CIE1931色度坐标系中表示在稳定状态的操作温度下操作的有机电致发光元件的发光颜色的情况下，使用早期的发光颜色的坐标点A和发光的坐标点B 通过使用恶化的颜色分别由（x1，y1）和（x2，y2）表示，满足y2≥y1的关系。 当从坐标点A到坐标点B的x和y值的变化量分别由＆Dgr; x = x2-X1和＆Dgr; y = y2-y1的等式表示时，＆Dgr;y≥＆Dgr; x的关系为 满意。 可以使发现颜色变化和寿命变得困难
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公开(公告)号：US10162170B2
公开(公告)日：2018-12-25
申请号：US15659766
申请日：2017-07-26
Inventor： Kazuyuki Yamae , Shintaro Hayashi
IPC: F21V7/04 , G01S1/00 , G09B9/00 , H01S3/00 , H01S3/30 , G02B23/24 , F21V9/30 , G02B19/00 , A61B1/06 , G02B27/09 , F21Y115/30
Abstract: An optical device includes: an excitation light source; a first light transmitter that transmits excitation light emitted from the excitation light source; a fluorescent light part that is disposed on a surface of the first light transmitter opposite a surface through which the excitation light enters, and emits fluorescent light from the excitation light; a second light transmitter that interposes the fluorescent light part with the first light transmitter, and transmits light emitted from the fluorescent light part; a light transmission fiber that guides the light exiting from the second light transmitter; and a microfabricated film that is disposed on a side of the second light transmitter closer to the light transmission fiber, and collects, toward the light transmission fiber, the light emitted from the fluorescent light part.
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公开(公告)号：US09748313B2
公开(公告)日：2017-08-29
申请号：US14891505
申请日：2014-05-15
Inventor： Hiroya Tsuji , Kazuyuki Yamae , Satoshi Ohara , Varutt Kittichungchit
CPC classification number: H01L27/3209 , C09K11/06 , C09K2211/10 , C09K2211/1011 , C09K2211/1029 , C09K2211/1088 , C09K2211/185 , H01L51/005 , H01L51/0058 , H01L51/006 , H01L51/0085 , H01L51/5016 , H01L51/5044
Abstract: The objective is to provide an organic electroluminescent element with an improved luminous efficiency. The organic electroluminescent element has a structure in which a first light-emitting unit containing a phosphorescent red light-emitting material, a second light-emitting unit containing a phosphorescent yellow light-emitting material, and a third light-emitting unit containing a fluorescent blue light-emitting material are stacked with interlayers in-between. A peak emission wavelength of the phosphorescent yellow light-emitting material is in a range of 530 nm to 570 nm. A peak emission wavelength of the fluorescent blue light-emitting material is in a range of 440 nm to 480 nm. The organic electroluminescent element has a ratio of a yellow emission intensity to a blue emission intensity in a range of 1.0 to 2.0. The organic electroluminescent element further has a ratio of a red emission intensity to the blue emission intensity in a range of 1.5 to 3.0.
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公开(公告)号：US09620740B2
公开(公告)日：2017-04-11
申请号：US14433873
申请日：2013-10-07
Inventor： Kazuyuki Yamae , Shin Okumura , Hitomichi Takano , Masuyuki Ota
CPC classification number: H01L51/5275 , H01L51/0096 , H01L51/5036 , H01L51/5206 , H01L51/5221 , H01L51/5246 , H01L51/5253 , H01L51/5259 , H01L51/5262 , H01L51/5268 , H01L2251/558 , H05B33/10
Abstract: The organic electroluminescence element includes: a moisture-proof substrate; a light emitting stack including a first electrode, a light emitting layer, and a second electrode; and an enclosing member bonded to the substrate to enclose the stack. The element further includes a light-outcoupling structure provided on a side of the substrate facing the first electrode and having an uneven structure made of material having a refractive index almost equal to or lower than a refractive index of the substrate. The uneven structure includes a plane divided into a matrix of sections, and multiple protruded parts having almost same heights individually allocated to desired sections of the matrix. With regard to an arbitrary region of the plane, a ratio of a total area of one or some of the multiple protruded parts in the arbitrary region to an area of the arbitrary region is almost constant.
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公开(公告)号：US09583731B2
公开(公告)日：2017-02-28
申请号：US14418560
申请日：2013-09-04
Inventor： Shin Okumura , Hitomichi Takano , Hirofumi Kubota , Kazuyuki Yamae , Masao Kirihara
CPC classification number: H01L51/5253 , H01L51/5203 , H01L51/5212 , H01L51/5268 , H01L51/5275 , H01L2251/5361
Abstract: The present invention relates to an organic electroluminescence element in which a transparent first electrode, an organic light emitting layer, a second electrode are stacked on a translucent substrate in this order. The translucent substrate includes a moisture-proof layer facing the first electrode. An LR layer and an HR layer having a refractive index higher than a refractive index of the LR layer are situated between the moisture-proof layer and the first electrode in this order from the moisture-proof layer. An uneven structure is provided at an interface between the LR layer and the HR layer. A linear expansivity α of the moisture-proof layer, and a linear expansivity β of the LR layer, and a linear expansivity γ of the HR layer satisfy a relation of α≦β≦γ.
Abstract translation: 本发明涉及一种有机电致发光元件，其中透明第一电极，有机发光层，第二电极依次层叠在透光性基板上。 半透明基板包括面向第一电极的防潮层。 具有高于LR层折射率的折射率的LR层和HR层从防潮层依次位于防潮层和第一电极之间。 在LR层和HR层之间的界面处设置有不均匀的结构。 防潮层的线膨胀系数α，LR层的线膨胀系数β和HR层的线膨胀系数γ满足α≤β≤γ的关系。
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Patent Agency Ranking
公开(公告)号：US12018834B2
公开(公告)日：2024-06-25
申请号：US17802567
申请日：2021-02-22
Inventor： Ryosuke Shigitani , Kazuyuki Yamae , Hironori Akiyama , Hideki Wada , Kotone Mori
IPC: F21V7/00 , F21Y115/10
CPC classification number: F21V7/0008 , F21V7/0091 , F21Y2115/10
Abstract: A light-emitting device includes: a light guide that includes (i) a light-transmissive member that is light-transmissive at least in a visible light region and (ii) a light control layer that is disposed on at least a part of a surface of the light-transmissive member; and a light source that emits light toward at least one end surface of the light-transmissive member. The light control layer has reflected-wavelength selectivity that makes a wavelength of reflected light dependent on an incident angle of incident light.
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公开(公告)号：US10443819B2
公开(公告)日：2019-10-15
申请号：US15786834
申请日：2017-10-18
Inventor： Kazuyuki Yamae
IPC: F21V13/04 , F21S8/02 , F21V5/04 , F21V17/06 , F21V19/02 , F21V21/04 , G02B7/02 , F21V5/00 , G02B3/08 , G02B27/09 , F21K9/20 , F21K9/68 , F21Y115/10 , F21S8/00 , F21V21/28 , F21V23/00 , F21V21/30 , F21Y115/20 , F21Y115/15
Abstract: A lighting device includes a light source and a light distributor disposed on a light emission side of the light source. The light distributor includes an entrance surface through which light enters and an exit surface through which the light that enters through the entrance surface exits. At least one of the entrance surface and the exit surface includes concave regions. Each of the concave regions includes a smooth concave surface. The concave regions control distribution of light from the light source that is refracted or reflected by an optical lens or a reflective component.
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公开(公告)号：US10344947B2
公开(公告)日：2019-07-09
申请号：US16018803
申请日：2018-06-26
Inventor： Kazuyuki Yamae
Abstract: A light emitter includes a light emitting layer and a reflection layer. The reflection layer includes a first dielectric film and a dielectric multi-layer film. The dielectric multi-layer film includes at least one layer of laminated film, in which each layer of laminated film includes a pair of a second dielectric film and a third dielectric film. The first dielectric film has a refractive index lower than a refractive index of the light emitting layer and the second dielectric film. The third dielectric film has a refractive index lower than the refractive index of the second dielectric film. A relationship of d1≥λave/n1 is satisfied, where λave denotes an average wavelength of a spectrum of visible light emitted via the light emitting layer, n1 denotes the refractive index of the first dielectric film, and d1 denotes a film thickness of the first dielectric film.
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公开(公告)号：US09871226B2
公开(公告)日：2018-01-16
申请号：US15036145
申请日：2014-10-09
Inventor： Kazuyuki Yamae , Yasuhisa Inada , Akira Hashiya
CPC classification number: H01L51/5268 , H01L51/0037 , H01L51/5056 , H01L51/5072 , H01L51/5088 , H01L51/5092 , H01L51/5275 , H01L51/5293
Abstract: This organic electroluminescent element includes: a light transmissive substrate; a light emitting stack including a first electrode, a light emitting layer, and a second electrode; and at least one light-outcoupling structure which has an uneven structure. The light emitting layer has a birefringence property with a higher refractive index in a direction parallel to a surface of the light transmissive substrate than a refractive index in a direction perpendicular to the surface of the light transmissive substrate. The uneven structure includes a plurality of protrusions which are individually allocated to some of planar matrix-like sections, and with regard to unit regions consisting of same number of sections of the planar matrix-like sections, a ratio of an area of one or more of the plurality of protrusions in a unit region is substantially constant in each unit region.
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公开(公告)号：US09647240B2
公开(公告)日：2017-05-09
申请号：US14891811
申请日：2014-01-17
Inventor： Akira Hashiya , Yasuhisa Inada , Kazuyuki Yamae
CPC classification number: H01L51/5275 , G02B3/0068 , G02B5/0242 , G02B5/0278 , H01L2251/5315 , H01L2251/5361
Abstract: An illuminator includes a light-emitting element and a light extraction sheet which transmits light occurring from the light-emitting element. The light-emitting element includes a first electrode having a light transmitting property, a second electrode, and an emission layer between the first and second electrodes. The light extraction sheet includes a light-transmitting substrate having a first face and a second face, a first light extraction structure on the first face side of the light-transmitting substrate, and a second light extraction structure on the second face side of the light-transmitting substrate. The first light extraction structure includes a low-refractive index layer and a high-refractive index layer having a higher refractive index than the low-refractive index layer. The second light extraction structure is arranged so that light which is transmitted through the light-transmitting substrate and arrives at an incident angle of 60 to 80 degrees has an average transmittance of 20% or more.
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