公开(公告)号：US12013547B2

公开(公告)日：2024-06-18

申请号：US17586952

申请日：2022-01-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuiga Hamade ,  Takumi Kodama

IPC: G02B27/12 ,  G09G3/34

CPC classification number: G02B27/126 ,  G09G3/344 ,  G09G2310/06 ,  G09G2310/08

Abstract: An optical module according to the present disclosure includes a first electro-optical device having a first light-emitting element emitting light including a first wavelength region, and a first light-emitting control transistor provided corresponding to the first light-emitting element, a second electro-optical device having a second light-emitting element emitting light including a second wavelength region shorter than the first wavelength region, and a second light-emitting control transistor provided corresponding to the second light-emitting element, and a prism configured to synthesize light emitted from the first electro-optical device, and light emitted from the second electro-optical device, wherein a first period in which the first light-emitting control transistor is in an ON-state in one frame is shorter than a second period in which the second light-emitting control transistor is in an ON-state in the one frame.

公开(公告)号：US10367148B2

公开(公告)日：2019-07-30

申请号：US15315569

申请日：2015-05-26

Applicant: Seiko Epson Corporation

Inventor： Tetsuji Fujita ,  Yuiga Hamade

IPC: G01R31/00 ,  H01L51/00 ,  C07D513/04 ,  C09K11/06 ,  H01L51/50 ,  C07F5/02 ,  C09K11/02 ,  G01R31/44

Abstract: To provide a light-emitting element which emits light in a near-infrared region and has high efficiency and long life, and a light-emitting device, an authentication device, and an electronic apparatus, each of which includes this light-emitting element.A light-emitting device 100 of the invention includes a light-emitting element 1A including an anode 3, a cathode 8, and a light-emitting layer 5 which is provided between the anode 3 and the cathode 8 and emits light in a near-infrared region by applying a current between the anode 3 and the cathode 8, wherein the device emits visible light with a luminance of 5 cd/m2 or more when a current is applied between the anode 3 and the cathode 8 at a current density of 300 A/cm2 or less.

公开(公告)号：US11172853B2

公开(公告)日：2021-11-16

申请号：US16305573

申请日：2017-05-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuiga Hamade ,  Tetsuji Fujita ,  Takashi Toya ,  Yasunori Koide

IPC: A61B5/1455 ,  A61B5/145

Abstract: A technique restrains degradation of a light emitting element. A biological information acquisition device acquires light receiving result by causing a light receiving unit to receive light emitted by a light emitting unit serving as a measurement-purpose light emitting unit, and acquires biological information by using the light receiving result. The light is emitted from the light emitting unit so as to acquire the light receiving result for one time, while a plurality of light emitting patterns are switched between a light emitting element which emits the light and a light emitting element which does not emit the light in a plurality of the light emitting elements.

公开(公告)号：US09799836B2

公开(公告)日：2017-10-24

申请号：US14628975

申请日：2015-02-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuji Fujita ,  Hidetoshi Yamamoto ,  Yuiga Hamade

IPC: H01L51/00 ,  H01L51/50

CPC classification number: H01L51/008 ,  H01L51/0054 ,  H01L51/0072 ,  H01L51/508 ,  H01L2251/308

Abstract: Provided are a light emitting element with a high efficiency and a long life that emits light in a near-infrared region, and a light emitting device, authentication device and electronic device that include the light emitting element. A light emitting element (1) according to one aspect of the invention includes an anode (3), a cathode (8), and a light emitting layer (5) that is provided between the anode (3) and the cathode (8) and that emits light by conducting current between the anode (3) and the cathode (8). The light emitting layer (5) includes a pyrromethene-based boron complex as a light emitting material and a tetracene-based material as a host material for retaining the light emitting material.

公开(公告)号：US12279492B2

公开(公告)日：2025-04-15

申请号：US17703963

申请日：2022-03-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Takumi Kodama ,  Yuiga Hamade

IPC: H10K59/131 ,  G02B17/08 ,  G02B27/01 ,  G02B27/14 ,  G03B21/20 ,  H10K59/32

Abstract: An optical module of the present disclosure includes a first panel including a first light-emitting element, a first power supply wiring and a second power supply wiring; a second panel including a second light-emitting element having light emission luminance per unit current lower than that of the first light-emitting element, a third power supply wiring and a fourth power supply wiring; and a prism configured to synthesize first image light emitted from the first panel and second image light emitted from the second panel. A first potential difference is smaller than a second potential difference, the first potential difference being a difference between a potential applied to the first power supply wiring and a potential applied to the second power supply wiring, the second potential difference being a difference between a potential applied to the third power supply wiring and a potential applied to the fourth power supply wiring.

公开(公告)号：US11308869B2

公开(公告)日：2022-04-19

申请号：US17031857

申请日：2020-09-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidetoshi Yamamoto ,  Yuiga Hamade

IPC: G09G3/3208 ,  G09G3/16 ,  G09G3/20

Abstract: An image light generation module according to the present disclosure includes a first panel configured to emit first image lighting a red wavelength region not having polarization characteristics, a second panel configured to emit second image light in a blue wavelength region not having polarization characteristics, a third panel configured to emit third image light in a green wavelength region not having polarization characteristics, and a color combining prism configured to emit combined light obtained by combining the first image light, the second image light, and the third image light. The first panel, the second panel, and the third panel each include a pixel structure in which a plurality of pixels are disposed, and aperture ratios of the pixels of the first panel, the second panel, and the third panel differ from each other.

公开(公告)号：US10050209B2

公开(公告)日：2018-08-14

申请号：US15157672

申请日：2016-05-18

Applicant: Seiko Epson Corporation

Inventor： Yuiga Hamade ,  Tetsuji Fujita

IPC: B32B9/00 ,  B32B19/00 ,  H01L51/00 ,  C09K11/06 ,  C09K11/02 ,  H05B33/14 ,  H05B33/20 ,  H01L51/50

Abstract: A light-emitting element includes an anode, a cathode, a light-emitting layer which is provided between the anode and the cathode and emits light in a wavelength range of 700 nm or more by conducting electricity between the anode and the cathode, and an electron transport layer which is provided between the light-emitting layer and the cathode, and includes a first electron transport layer located on the cathode side and a second electron transport layer located on the light-emitting layer side, wherein organic materials contained in the light-emitting layer, a hole injection layer, the first electron transport layer, and the second electron transport layer have a glass transition temperature Tg of 135° C. or higher or do not have a glass transition temperature.

公开(公告)号：US11327327B2

公开(公告)日：2022-05-10

申请号：US16802790

申请日：2020-02-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuiga Hamade ,  Hidetoshi Yamamoto

IPC: G02B27/14 ,  H01L27/32 ,  G03B33/12 ,  G02B27/01

Abstract: An image display device according to the present disclosure includes a first self-light-emitting display element that emits light for an image of red light, a second self-light-emitting display element that emits light for an image of blue light, a third self-light-emitting display element that emits light for an image of green light, and a prism having a dichroic mirror that synthesizes images of three colors, in which the first self-light-emitting display element, the second self-light-emitting display element, and the third self-light-emitting display element have a first cathode, a second cathode, and a third cathode, respectively, and when a film thickness of the first cathode is referred to as TR, a film thickness of the second cathode is referred to as TB, and a film thickness of the third cathode is referred to as TG, a relationship TR

公开(公告)号：US11294194B2

公开(公告)日：2022-04-05

申请号：US16802758

申请日：2020-02-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidetoshi Yamamoto ,  Yuiga Hamade

IPC: G02B27/14 ,  G02B27/01 ,  H01L27/32 ,  G03B33/12

Abstract: An image display device according to the present disclosure includes a first self-luminous display element that self-emits an image of first color light, a second self-luminous display element that self-emits an image of second color light, a third self-luminous display element that self-emits an image of third color light, and a prism including a dichroic mirror that synthesizes images of three colors, the first, the second, and the third self-luminous display element are each configured to extract light from a side of a semireflective semitransmissive electrode included in the first, the second, and the third self-luminous display element, and at least one of sums of a thickness of a transparent electrode and a thickness of an optical adjustment layer differs from other in the first, the second, and the third self-luminous display element.

公开(公告)号：US11202607B2

公开(公告)日：2021-12-21

申请号：US16305552

申请日：2017-05-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuiga Hamade ,  Yasunori Koide ,  Takashi Toya

IPC: A61B5/00 ,  A61B5/145 ,  A61B5/1455

Abstract: A technique for realizing energy saving. According to a biological information acquisition device, light emitting power per unit area of one light emitting element emitting light when first biological information is acquired is weaker than light emitting power per unit area of one light emitting element emitting light when second biological information is acquired.