公开(公告)号：US20250008832A1

公开(公告)日：2025-01-02

申请号：US18704411

申请日：2022-10-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hayato YAMAWAKI ,  Sachiko KAWAKAMI ,  Naoaki HASHIMOTO ,  Eriko AOYAMA ,  Yasuhiro NIIKURA

IPC: H10K71/20 ,  H10K50/13 ,  H10K71/00 ,  H10K71/40 ,  H10K71/60 ,  H10K85/20 ,  H10K85/60

Abstract: A method for removing oxygen from an oxygen adduct of anthracene, which is generated by irradiation with ultraviolet rays, is provided. Alternatively a method for manufacturing an electronic device or a display device with favorable reliability is provided. A method for manufacturing an electronic device, including a step of irradiating a layer including an organic compound including an anthracene structure with ultraviolet rays at an energy density higher than or equal to 1 mJ/cm2 and lower than or equal to 1000 mJ/cm2 in an atmosphere where oxygen exists and a step of performing heating at a temperature higher than or equal to 80° C. in an atmosphere with an oxygen concentration lower than or equal to 300 ppm is provided.

公开(公告)号：US20240415012A1

公开(公告)日：2024-12-12

申请号：US18690357

申请日：2022-09-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Daisuke KUBOTA ,  Kazuya SUGIMOTO ,  Akio YAMASHITA ,  Yasuhiro NIIKURA ,  Sachiko KAWAKAMI ,  Anna TADA

IPC: H10K85/60 ,  C07C211/61 ,  H10K39/00

Abstract: A novel and highly convenient, useful, or reliable material for a photoelectric conversion device is provided. The photoelectric conversion device includes a first electrode, a second electrode, a first layer, a second layer, and a third layer. The first layer is held between the first electrode and the second electrode; the second layer is held between the second electrode and the first layer; the third layer is held between the second electrode and the second layer; and the third layer has higher electron mobility than the first layer. The material is used in the second layer, the material contains an anthracene skeleton, and the anthracene skeleton is bonded to a diarylamino group, a diheteroarylamino group, or an arylheteroarylamino group.

公开(公告)号：US20240090303A1

公开(公告)日：2024-03-14

申请号：US18273085

申请日：2022-01-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke KUBOTA ,  Ryo HATSUMI ,  Yasuhiro NIIKURA ,  Shunpei YAMAZAKI

IPC: H10K59/00 ,  H10K39/34 ,  H10K59/12

CPC classification number: H10K59/771 ,  H10K39/34 ,  H10K59/1201

Abstract: A display device having a function of detecting an object that is in contact with or approaches a display portion is provided. The display device includes a light-emitting element and a light-receiving element. The light-emitting element includes a first pixel electrode, a first functional layer, a light-emitting layer, a common layer, and a common electrode. The light-receiving element includes a second pixel electrode, a second functional layer, a light-receiving layer, the common layer, and the common electrode. The first functional layer includes one of a hole-injection layer and an electron-injection layer. The second functional layer includes one of a hole-transport layer and an electron-transport layer. The common layer has a function of the other of the hole-injection layer and the electron-injection layer in the light-emitting element and has a function of the other of the hole-transport layer and the electron-transport layer in the light-receiving element.

公开(公告)号：US20140184968A1

公开(公告)日：2014-07-03

申请号：US14134361

申请日：2013-12-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yasuhiro NIIKURA ,  Momoko KATO ,  Daisuke KUBOTA ,  Makoto IKENAGA

IPC: G02F1/00

CPC classification number: G02F1/1396 ,  G02F1/1391 ,  G09G3/36

Abstract: Provided is a novel liquid crystal display device without deterioration of display quality. The liquid crystal display device includes a pixel for displaying a still image with a frame frequency of 1 Hz or lower. The pixel includes a liquid crystal element which includes a liquid crystal layer and has a cell gap of d (μm). The liquid crystal layer includes a liquid crystal composition which includes a liquid crystal material. The helical pitch of the liquid crystal material is longer than or equal to 4d μm and shorter than or equal to 8d μm. With this structure, a change in voltage applied to a pixel can be kept within an acceptable range of a deviation in gray level for displaying the same image. Thus, flickers due to a low refresh rate can be reduced, which leads to an increase in display quality.

Abstract translation: 提供了一种不劣化显示质量的新型液晶显示装置。 液晶显示装置包括用于显示帧频为1Hz以下的静止图像的像素。 像素包括液晶元件，其包括液晶层，并具有d（μm）的单元间隙。 液晶层包括含有液晶材料的液晶组合物。 液晶材料的螺旋间距大于或等于4dμm且小于或等于8dμm。 利用这种结构，可以将施加到像素的电压变化保持在用于显示相同图像的灰度偏差的可接受范围内。 因此，可以减少由于刷新率低而引起的闪烁，这导致显示质量的提高。

公开(公告)号：US20240090302A1

公开(公告)日：2024-03-14

申请号：US18273084

申请日：2022-01-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Kenichi OKAZAKI ,  Koji KUSUNOKI ,  Shingo EGUCHI ,  Daisuke KUBOTA ,  Yasuhiro NIIKURA

IPC: H10K59/65 ,  G06V40/13 ,  H10K59/40 ,  H10K71/60

CPC classification number: H10K59/65 ,  G06V40/1318 ,  H10K59/40 ,  H10K71/60

Abstract: A high-resolution display apparatus having a function of sensing light is provided. A high-definition display apparatus having a function of sensing light is provided. The display apparatus includes a first light-emitting device, a second light-emitting device, a third light-emitting device, a first light-receiving device, and a second light-receiving device in a first pixel. The first light-emitting device has a function of emitting red light. The second light-emitting device has a function of emitting green light. The third light-emitting device has a function of emitting blue light. The first light-receiving device has a function of sensing light emitted from at least one of the three light-emitting devices. The second light-receiving device has a function of sensing infrared light.

公开(公告)号：US20230354704A1

公开(公告)日：2023-11-02

申请号：US18305772

申请日：2023-04-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro NIIKURA ,  Sachiko KAWAKAMI ,  Naoaki HASHIMOTO ,  Yui YOSHIYASU

IPC: H10K50/16 ,  H05B33/10 ,  H10K85/60 ,  H10K50/13 ,  H10K71/20 ,  H10K59/80

CPC classification number: H10K85/6572 ,  H05B33/10 ,  H10K50/13 ,  H10K50/16 ,  H10K59/805 ,  H10K71/231

Abstract: An increase in voltage of a light-emitting device manufactured through a step of forming an aluminum oxide film in contact with an organic compound layer is inhibited. An organic compound film is formed over a first electrode. An organic mask film containing an organic compound which has low solubility to water or a chemical solution including water as a solvent is formed over the organic compound film. An inorganic mask layer is formed over the organic mask film. Shapes of the organic mask film and the organic compound film are processed with the use of the inorganic mask layer, whereby an organic mask layer and an organic compound layer are formed. At least parts of the inorganic mask layer and the organic mask layer are removed with the use of water or a liquid including water as a solvent.

公开(公告)号：US20230129057A1

公开(公告)日：2023-04-27

申请号：US17798499

申请日：2021-02-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya Hirose ,  Yasuhiro NIIKURA ,  Hiroshi KADOMA ,  Nobuharu OHSAWA ,  Harue OSAKA ,  Satoshi SEO

IPC: C07D491/048 ,  C07D495/04

Abstract: An organic compound that easily exhibits thermally activated delayed fluorescence (TADF) is provided. An organic compound represented by General Formula (G1) is provided. In General Formula (G1), R1 to R8 are each independently any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, and a substituted or unsubstituted diarylamino group; at least one of R1 to R8 is a substituted or unsubstituted diarylamino group; a is a substituted or unsubstituted phenylene group; n is an integer of 0 to 4; and A represents a substituted or unsubstituted benzofuropyrimidine skeleton or benzothienopyrimidine skeleton.

公开(公告)号：US20150255029A1

公开(公告)日：2015-09-10

申请号：US14638667

申请日：2015-03-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro NIIKURA ,  Makoto IKENAGA ,  Manabu KOBAYASHI ,  Ryo HATSUMI

IPC: G09G3/36 ,  G06F3/041

CPC classification number: G09G3/3648 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/3614 ,  G09G2330/021

Abstract: [Object]Provided is a novel display device without deterioration of display quality or a novel display device in which flickering due to a reduced refresh rate is suppressed.[Solution]The display device includes a pixel for displaying a still image at a frame frequency of less than or equal to 1 Hz. The pixel includes a liquid crystal layer. The liquid crystal layer has a dielectric constant anisotropy of higher than or equal to 2 and lower than or equal to 3.8. Thus, flickering due to a reduced refresh rate can be suppressed, which leads to an improvement in display quality.

Abstract translation: 提供了一种不会降低显示质量的新型显示装置，或者抑制了由于刷新率降低引起的闪烁的新型显示装置。 [解决方案]显示装置包括用于以小于或等于1Hz的帧频显示静止图像的像素。 像素包括液晶层。 液晶层的介电常数各向异性高于或等于2且低于或等于3.8。 因此，可以抑制由刷新率降低引起的闪烁，这导致显示质量的提高。

公开(公告)号：US20230062265A1

公开(公告)日：2023-03-02

申请号：US17841930

申请日：2022-06-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro NIIKURA ,  Daisuke KUBOTA ,  Taisuke KAMADA ,  Sachiko KAWAKAMI ,  Anna TADA ,  Satoshi SEO

IPC: C07C211/54 ,  H01L27/28 ,  C07D209/82 ,  C07D307/91 ,  C07D405/12 ,  C07D409/12 ,  C07D333/76 ,  C07C15/38 ,  C07C15/20 ,  C07C15/28 ,  C07D495/22 ,  C07D495/14 ,  C07D495/04 ,  C07D333/18 ,  C07D471/06 ,  C07D251/24 ,  C07D403/14 ,  C07D401/10 ,  C07D235/08 ,  C07D519/00 ,  C07D409/10 ,  C07D403/10 ,  C07D491/048 ,  C07F7/22 ,  C07F15/00 ,  C07D413/10 ,  C07D405/04 ,  C07D221/20 ,  C07D409/14 ,  C07D219/16 ,  C07D471/14 ,  H01L51/00

Abstract: A light-receiving device in which an increase in driving voltage is inhibited is provided. Any of the following light-receiving devices is provided: a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes an organic compound having an electron-withdrawing group; a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes a heteroaromatic compound having an electron-withdrawing group.

公开(公告)号：US20180336840A1

公开(公告)日：2018-11-22

申请号：US15529363

申请日：2015-11-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yasuhiro NIIKURA ,  Makoto IKENAGA ,  Daisuke KUBOTA ,  Ryo HATSUMI

IPC: G09G3/34

Abstract: Provided is a novel display device without deterioration of display quality or a novel display device in which flickering due to a reduced refresh rate is suppressed. The display device includes a pixel for displaying a still image at a frame frequency of less than or equal to 1 Hz. The pixel includes a liquid crystal layer. The liquid crystal layer includes a molecule whose dipole moment is greater than or equal to 0 debye and less than or equal to 3 debye. Thus, flickering due to a reduced refresh rate can be suppressed, which leads to an improvement in display quality.