公开(公告)号：US20220140273A1

公开(公告)日：2022-05-05

申请号：US17431246

申请日：2020-02-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Satoshi SEO ,  Harue OSAKA

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  H01L51/56

Abstract: A display device having a long lifetime is provided. A large-sized display device is provided. A display device includes a first light-emitting device and a second light-emitting device. The first light-emitting device includes a hole-injection layer, a first light-emitting layer, and an electron-transport layer. The second light-emitting device includes a second light-emitting layer. The hole-injection layer contains a first compound and a second compound. The first light-emitting layer contains a third compound that emits light of a first color. The second light-emitting layer contains a fourth compound that emits light of a second color. The electron-transport layer contains a fifth compound. The first compound has a property of accepting electrons from the second compound. The second compound has a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The fifth compound has a HOMO level higher than or equal to −6.0 eV and an electron mobility higher than or equal to 1×10{circumflex over ( )}−7 cm{circumflex over ( )}/Vs and lower than or equal to 5×10{circumflex over ( )}−5 cm{circumflex over ( )}/Vs when the square root of electric field strength [V/cm] is 600.

公开(公告)号：US20220123054A1

公开(公告)日：2022-04-21

申请号：US17425786

申请日：2020-02-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Harue OSAKA

IPC: H01L27/32

Abstract: A display panel is provided. The display panel includes a display region, an insulating film, and a sealing film; the display region includes a pixel; and the pixel includes a display element and a color conversion layer. The insulating film covers the display element, the sealing film includes a region, the color conversion layer is sandwiched between the region and the insulating film, and the sealing film includes a region that is on the outside of the display region and in contact with the insulating film. The display element includes a first layer, a second layer, a third layer, and a fourth layer. The first layer contains a first material and a second material, the second layer contains a third material, the third layer contains a light-emitting material and a fourth material, the fourth layer contains a fifth material and a sixth material, the first material has a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV, the second material has an acceptor property, the third material has a lower HOMO level than the first material, the fifth material has a HOMO level higher than or equal to −6.0 eV, and the sixth material is an organic complex of alkali metal or an organic complex of alkaline earth metal.

公开(公告)号：US20200148640A1

公开(公告)日：2020-05-14

申请号：US16741830

申请日：2020-01-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroko NOMURA ,  Harue OSAKA ,  Takahiro USHIKUBO ,  Sachiko KAWAKAMI ,  Satoshi SEO ,  Satoko SHITAGAKI

IPC: C07D209/86 ,  H01L51/00

Abstract: To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α1 each represent an azylene stoup having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independently 0 or 1.

公开(公告)号：US20200098997A1

公开(公告)日：2020-03-26

申请号：US16473053

申请日：2017-12-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Satoshi SEO ,  Nozomi KOMATSU ,  Ryohei YAMAOKA ,  Harue OSAKA ,  Kunihiko SUZUKI ,  Shunsuke HOSOUMI

IPC: H01L51/00

Abstract: A highly reliable light-emitting element having high emission efficiency is provided. The light-emitting element includes a light-emitting layer including a first organic compound and a guest material. The first organic compound has a substituted or unsubstituted carbazole skeleton. In the light-emitting layer, the weight ratio of a hydrocarbon group substitution product in which at least one of hydrogen atoms in the first organic compound is substituted by a hydrocarbon group having 1 to 6 carbon atoms to the first organic compound is greater than 0 and less than or equal to 0.1.

公开(公告)号：US20190040009A1

公开(公告)日：2019-02-07

申请号：US16139412

申请日：2018-09-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroko Nomura ,  Harue OSAKA ,  Takahiro USHIKUBO ,  Sachiko KAWAKAMI ,  Satoshi SEO ,  Satoko SHITAGAKI

IPC: C07D209/86 ,  H01L51/00

Abstract: To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independently 0 or 1.

公开(公告)号：US20170365782A1

公开(公告)日：2017-12-21

申请号：US15673460

申请日：2017-08-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue OSAKA ,  Satoko SHITAGAKI ,  Tsunenori SUZUKI ,  Nobuharu OHSAWA ,  Sachiko KAWAKAMI ,  Satoshi SEO

IPC: H01L51/00 ,  C09B57/00 ,  H05B33/20 ,  C07C209/10 ,  H05B33/14 ,  H01L51/50 ,  C07C2603/18

Abstract: An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below. In the formula, R1 to R8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α1 to α4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar1 and Ar2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.

公开(公告)号：US20170025621A1

公开(公告)日：2017-01-26

申请号：US15215117

申请日：2016-07-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kunihiko Suzuki ,  Satoshi SEO ,  Harue OSAKA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Kyoko TAKEDA

IPC: H01L51/00 ,  C07D209/86 ,  C09K11/02

Abstract: A light-emitting element that contains a fluorescent compound, which has high efficiency is provided. A light-emitting element in which the proportion of delayed fluorescence to the total light emitted from the light-emitting element is higher than that in a conventional light-emitting element is provided. Emission efficiency of the light-emitting element containing a fluorescent compound can be improved by increasing the probability of TTA caused by an organic compound in an EL layer, converting energy of triplet excitons, which does not contribute to light emission, into energy of singlet excitons, and making the fluorescent compound emit light by energy transfer of the singlet excitons.

Abstract translation: 提供含有高效率的荧光化合物的发光元件。 提供了一种发光元件，其中延迟荧光与从发光元件发射的总光的比例高于常规发光元件。 含有荧光化合物的发光元件的发射效率可以通过增加由EL层中的有机化合物引起的TTA的可能性，将不对发光有贡献的三线态激子的能量转换成单重态激子的能量来提高 ，并且通过单重激子的能量转移使荧光化合物发光。

公开(公告)号：US20160197284A1

公开(公告)日：2016-07-07

申请号：US15071727

申请日：2016-03-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroko NOMURA ,  Harue OSAKA ,  Takahiro USHIKUBO ,  Satoshi SEO

IPC: H01L51/00 ,  C07D209/86

CPC classification number: H01L51/0061 ,  C07D209/86 ,  C07D403/12 ,  C09K11/06 ,  C09K2211/1029 ,  H01L51/0072 ,  H01L51/0081 ,  H01L51/5012 ,  H01L51/5056 ,  H05B33/14 ,  H05B33/20 ,  Y10S428/917

Abstract: A carbazole derivative represented by the general formula (1) is provided. In the formula, Ar1 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring; α and β independently represent a substituted or unsubstituted arylene group having 6 to 12 carbon atoms which form a ring; R1 represents an alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring; and R11 to R17 and R21 to R28 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring.

公开(公告)号：US20160118615A1

公开(公告)日：2016-04-28

申请号：US14922636

申请日：2015-10-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi SEO ,  Tsunenori SUZUKI ,  Takeyoshi WATABE ,  Kunihiko SUZUKI ,  Toshiki HAMADA ,  Rina NAKAMURA ,  Hayato YAMAWAKI ,  Ayumi SATO ,  Harue OSAKA

IPC: H01L51/50

CPC classification number: H01L51/5092 ,  H01L51/0025 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5072

Abstract: To provide a novel light-emitting element or a highly reliable light-emitting element. To provide a light-emitting device, a display device, an electronic device, and a lighting device each of which can be manufactured at a low cost. To provide a light-emitting element including an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron injection transport layer between the light-emitting layer and the cathode, and the amount of a halogen detected from a material forming the electron injection transport layer is less than or equal to 30 ppm.

Abstract translation: 提供新颖的发光元件或高度可靠的发光元件。 提供可以以低成本制造的发光装置，显示装置，电子装置和照明装置。 在阳极和阴极之间提供包括阳极，阴极和EL层的发光元件。 EL层包括在发光层和阴极之间的发光层和电子注入传输层，并且从形成电子注入传输层的材料检测到的卤素的量小于或等于30ppm。

公开(公告)号：US20150318491A1

公开(公告)日：2015-11-05

申请号：US14708632

申请日：2015-05-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue OSAKA ,  Nobuharu OHSAWA ,  Masato SUZUKI

IPC: H01L51/00 ,  C07D401/14

CPC classification number: H01L51/0072 ,  C07D401/14 ,  H01L51/0067 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5072

Abstract: A novel carbazole compound is provided which can be used as a host material for a light-emitting substance (substance emitting fluorescence or substance emitting phosphorescence). A light-emitting element with high emission efficiency, and a light-emitting device, an electronic device, or a lighting device which has low power consumption are provided. A carbazole compound represented by General Formula (G1) below. (In the formula, Ar1 represents any of hydrogen, a substituted or unsubstituted phenyl group, and a carbazolyl group; R1 to R3 each independently represent any of hydrogen, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; α represents any of a substituted or unsubstituted phenylene group and a substituted or unsubstituted biphenylene group; and n is any of 0, 1, and 2.)

Abstract translation: 提供了可用作发光物质（发射荧光的物质或发射磷光的物质）的主体材料的新型咔唑化合物。 提供具有高发光效率的发光元件，以及具有低功耗的发光装置，电子装置或照明装置。 由通式（G1）表示的咔唑化合物。 （式中，Ar 1表示氢，取代或未取代的苯基，咔唑基中的任一个，R 1〜R 3各自独立地表示氢，取代或未取代的苯基，取代或未取代的联苯基，α表示 任何取代或未取代的亚苯基和取代或未取代的亚联苯基; n为0，1和2中的任何一个）