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公开(公告)号：US20250017041A1
公开(公告)日：2025-01-09
申请号：US18895584
申请日：2024-09-25
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Shunpei YAMAZAKI , Shinpei MATSUDA , Takuya KAWATA
IPC: H10K59/121 , H10K50/822 , H10K50/854 , H10K50/858 , H10K59/40 , H10K71/80
Abstract: A light-emitting device, a lighting device, a display device, or the like in which the state of a back surface side can be observed when light is not emitted is provided. The light-emitting device includes a plurality of light-emitting portions and a region transmitting visible light in a region other than the light-emitting portions. Alternatively, the light-emitting device includes a plurality of light-transmitting portions transmitting visible light and a light-emitting portion that can emit light in a region other than the light-transmitting portions. When light is not emitted, the state of a back surface side of the light-emitting device is visible through the region transmitting visible light. When light is emitted, the state of the back surface side of the light-emitting device can be made less visible by diffusion of light emitted from the light-emitting portion.
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公开(公告)号：US20240414973A1
公开(公告)日：2024-12-12
申请号：US18742113
申请日：2024-06-13
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Takuya KAWATA , Akihiro CHIDA
IPC: H10K59/60 , G06F1/16 , H10K50/84 , H10K59/12 , H10K59/40 , H10K71/00 , H10K77/10 , H10K101/00 , H10K102/00
Abstract: A display device, an electronic device, or a lighting device that is unlikely to be broken is provided. A flexible first substrate and a flexible second substrate overlap with each other with a display element provided therebetween. A flexible third substrate is bonded on the outer surface of the first substrate, and a flexible fourth substrate is bonded on the outer surface of the second substrate. The third substrate is formed using a material softer than the first substrate, and the fourth substrate is formed using a material softer than the second substrate.
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公开(公告)号：US20240032372A1
公开(公告)日：2024-01-25
申请号：US18222169
申请日：2023-07-14
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hajime KIMURA , Kunio KIMURA , Takuya KAWATA
CPC classification number: H10K59/351 , H10K59/38
Abstract: A display apparatus includes a first pixel, a second pixel, a third pixel, and a fourth pixel. The first pixel includes a first light-emitting device and a first layer. The first light-emitting device emits first light toward the first layer. An emission spectrum of the first light has an intensity in a blue-light wavelength range and an intensity in a green-light wavelength range. The first light contains a color conversion material converting blue and green light into red light. The second pixel includes a second light-emitting device and a second layer. The second light-emitting device emits second light toward the second layer. The second layer has a function of transmitting blue light. The third pixel includes a third light-emitting device and a third layer. The third light-emitting device emits third light toward the third layer. The third layer has a function of absorbing blue light and transmitting green light. The fourth pixel includes a fourth light-emitting device and a fourth layer. The fourth light-emitting device emits fourth light toward the fourth layer. The first to fourth light-emitting device provide the same emission spectrum as each other.
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公开(公告)号：US20230371298A1
公开(公告)日：2023-11-16
申请号：US18203699
申请日：2023-05-31
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuharu OHSAWA , Yusuke NONAKA , Takahiro ISHISONE , Satoshi SEO , Takuya KAWATA
CPC classification number: H10K50/131 , H10K50/11 , H10K50/15 , H10K50/16 , H10K50/121 , H10K59/32 , H10K85/342
Abstract: An object of one embodiment of the present invention is to provide a multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance, a separation layer containing a substance having a hole-transport property and a substance having an electron-transport property, and a second light-emitting layer containing two kinds of organic compounds that form an exciplex and a substance that can convert triplet excitation energy into luminescence. Note that a light-emitting element in which light emitted from the first light-emitting layer has an emission spectrum peak on the shorter wavelength side than an emission spectrum peak of the second light-emitting layer is more effective.
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公开(公告)号：US20210193945A1
公开(公告)日：2021-06-24
申请号：US17178417
申请日：2021-02-18
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Nobuharu OHSAWA , Yusuke NONAKA , Takahiro ISHISONE , Satoshi SEO , Takuya KAWATA
Abstract: An object of one embodiment of the present invention is to provide a multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance, a separation layer containing a substance having a hole-transport property and a substance having an electron-transport property, and a second light-emitting layer containing two kinds of organic compounds that form an exciplex and a substance that can convert triplet excitation energy into luminescence. Note that a light-emitting element in which light emitted from the first light-emitting layer has an emission spectrum peak on the shorter wavelength side than an emission spectrum peak of the second light-emitting layer is more effective.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180182988A1
公开(公告)日：2018-06-28
申请号：US15900832
申请日：2018-02-21
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Takuya KAWATA , Nobuharu OHSAWA , Yusuke NONAKA , Takahiro ISHISONE , Satoshi SEO
CPC classification number: H01L51/504 , H01L51/0052 , H01L51/0054 , H01L51/0058 , H01L51/006 , H01L51/0061 , H01L51/0072 , H01L51/0074 , H01L51/0085 , H01L51/0097 , H01L51/5016 , H01L51/5028 , H01L2251/5376
Abstract: A light-emitting element includes a stack of a first light-emitting layer emitting fluorescent light and a second light-emitting layer emitting phosphorescent light between a pair of electrodes. The second light-emitting layer includes a first layer in which an exciplex is formed, a second layer in which an exciplex is formed, and a third layer in which an exciplex is formed. The second layer is located over the first layer, and the third layer is located over the second layer. An emission peak wavelength of the second layer is longer than an emission peak wavelength of the first layer and an emission peak wavelength of the third layer.
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公开(公告)号：US20160343781A1
公开(公告)日：2016-11-24
申请号：US15225120
申请日：2016-08-01
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Takuya KAWATA , Akihiro CHIDA
Abstract: A display device, an electronic device, or a lighting device that is unlikely to be broken is provided. A flexible first substrate and a flexible second substrate overlap with each other with a display element provided therebetween. A flexible third substrate is bonded on the outer surface of the first substrate, and a flexible fourth substrate is bonded on the outer surface of the second substrate. The third substrate is formed using a material softer than the first substrate, and the fourth substrate is formed using a material softer than the second substrate.
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8.发明申请公开(公告)号：US20150054014A1
公开(公告)日：2015-02-26
申请号：US14505843
申请日：2014-10-03
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi Seo , Hisao IKEDA , Takuya KAWATA
CPC classification number: H01L33/58 , H01L33/22 , H01L33/56 , H01L51/5275
Abstract: A solid-state light-emitting element includes a structure body having a property of transmitting visible light and an uneven structure on each of the top side and the bottom side thereof; a high refractive index material layer provided on one surface of the structure body; and a light-emitting body with a refractive index of greater than or equal to 1.6 provided over the high refractive index material layer. One surface of the high refractive index material layer is flatter than the other surface thereof which is in contact with the structure body. The refractive index of the high refractive index material layer is greater than or equal to 1.6. The refractive index of the structure body is greater than 1.0 and less than that of the high refractive index material layer.
Abstract translation: 固态发光元件包括在其顶侧和底侧各自具有透射可见光和不平坦结构的性质的结构体; 设置在所述结构体的一个表面上的高折射率材料层; 以及设置在高折射率材料层上的折射率大于或等于1.6的发光体。 高折射率材料层的一个表面比与结构体接触的其他表面平坦。 高折射率材料层的折射率大于或等于1.6。 结构体的折射率大于1.0且小于高折射率材料层的折射率。
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公开(公告)号：US20250040388A1
公开(公告)日：2025-01-30
申请号：US18783679
申请日：2024-07-25
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Kunio KIMURA , Takuya KAWATA , Yukiko HONDA , Noriko SHIBATA
Abstract: A display device includes first to third light-emitting devices. The first light-emitting device includes a first anode, a first cathode, and a first light-emitting layer between the first anode and the first cathode. The second light-emitting device includes a second anode, a second cathode, and a second light-emitting layer between the second anode and the second cathode. The third light-emitting device includes a third anode; a third cathode; and a third light-emitting layer and a fourth light-emitting layer between the third anode and the third cathode. The fourth light-emitting layer is between the third light-emitting layer and the third cathode and is in contact with the third light-emitting layer. The first to third light-emitting devices have different emission colors. The first and third light-emitting layers include a first light-emitting substance. The second and fourth light-emitting layers include a second light-emitting substance. A peak wavelength of an emission spectrum of the first light-emitting substance and a peak wavelength of an emission spectrum of the second light-emitting substance are different from each other.
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公开(公告)号：US20200266250A1
公开(公告)日：2020-08-20
申请号：US16867890
申请日：2020-05-06
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Takuya KAWATA , Akihiro CHIDA
Abstract: A display device, an electronic device, or a lighting device that is unlikely to be broken is provided. A flexible first substrate and a flexible second substrate overlap with each other with a display element provided therebetween. A flexible third substrate is bonded on the outer surface of the first substrate, and a flexible fourth substrate is bonded on the outer surface of the second substrate. The third substrate is formed using a material softer than the first substrate, and the fourth substrate is formed using a material softer than the second substrate.
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