公开(公告)号：US20240142292A1

公开(公告)日：2024-05-02

申请号：US18384985

申请日：2023-10-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Hideo SASAHARA ,  Yoshihiro YAMAMURA ,  Hidetoshi YAMAMOTO ,  Yuya OZAWA

IPC: G01F23/284

CPC classification number: G01F23/2845

Abstract: An information processing device includes an acquisition device that acquires, as a first strength, a strength of a radio signal related to position information received at a position of a first height, and a first determination device that determines that the first height is a water level when an attenuation amount of the first strength with respect to a reference strength exceeds a predetermined value.

公开(公告)号：US20220269097A1

公开(公告)日：2022-08-25

申请号：US17683685

申请日：2022-03-01

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：US20200278559A1

公开(公告)日：2020-09-03

申请号：US16802790

申请日：2020-02-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuiga HAMADE ,  Hidetoshi YAMAMOTO

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

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：US20190036061A1

公开(公告)日：2019-01-31

申请号：US16037866

申请日：2018-07-17

Applicant: SEIKO EPSON CORPORATION

Inventor： Akio FUKASE ,  Hidetoshi YAMAMOTO

IPC: H01L51/50

CPC classification number: H01L51/5044 ,  H01L27/3211 ,  H01L27/322 ,  H01L51/5028 ,  H01L2251/5315

Abstract: Provided is a light emitting device configured to suppress deterioration in a balance of white light emission and increase a service life. The light emitting device includes a red light emitting layer, a blue light emitting layer, a green light emitting layer, a first intermediate layer configured to adjust a transfer of holes and electrons between the red light emitting layer and the blue light emitting layer, and a second intermediate layer configured to adjust the transfer of holes and electrons between the blue light emitting layer and the green light emitting layer. The intermediate layers and the blue light emitting layer each contain an assist dopant material, a concentration of the assist dopant material in the intermediate layers being greater than a concentration of the assist dopant material in the blue light emitting layer.

公开(公告)号：US20200278549A1

公开(公告)日：2020-09-03

申请号：US16802721

申请日：2020-02-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidetoshi YAMAMOTO

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

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; the first self-luminous display element includes a first functional layer and a first substrate portion, the second self-luminous display element includes a second functional layer and a second substrate portion, and the third self-luminous display element includes a third functional layer and a third substrate portion; the first, the second, and the third substrate portion have an identical configuration in the thickness directions thereof; and the first, the second, and the third functional layer have a mutually different film thickness.

公开(公告)号：US20180261773A1

公开(公告)日：2018-09-13

申请号：US15913047

申请日：2018-03-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidetoshi YAMAMOTO ,  Yuiga HAMADE ,  Tetsuji FUJITA

IPC: H01L51/00

CPC classification number: H01L51/0061 ,  G06K9/0004 ,  G06K9/00087 ,  G06K2009/00932 ,  H01L51/0054 ,  H01L51/0059 ,  H01L51/0071 ,  H01L51/5012 ,  H01L51/5024 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/508 ,  H01L51/5088 ,  H01L51/5092

Abstract: A light-emitting element according to the invention includes an anode, a cathode, and a light-emitting layer which is provided between the anode and the cathode, contains a light-emitting material and a host material that holds the light-emitting material, and emits light having a peak wavelength in a near-infrared region by applying a current between the anode and the cathode, wherein the content of the light-emitting material in the light-emitting layer is 30 wt % or more and 70 wt % or less. Further, it is preferred that the light-emitting layer emits light having the peak wavelength of 700 nm or more and 960 nm or less.

公开(公告)号：US20170365793A1

公开(公告)日：2017-12-21

申请号：US15696954

申请日：2017-09-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuji FUJITA ,  Hidetoshi YAMAMOTO

IPC: H01L51/00 ,  C07D513/04 ,  H05B33/14 ,  C09K11/06

CPC classification number: H01L51/0071 ,  C07D513/04 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1044 ,  C09K2211/1051 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/0061 ,  H05B33/14

Abstract: Provided is a thiadiazole compound with high efficiency and long life which emits light in a near-infrared region and represented by Formula (I). In the Formula (I), As each independently represent an aryl group which may have a substituent or a diarylamino group.

公开(公告)号：US20150287948A1

公开(公告)日：2015-10-08

申请号：US14643716

申请日：2015-03-10

Applicant: SEIKO EPSON CORPORATION

Inventor： Akio FUKASE ,  Hidetoshi YAMAMOTO ,  Yuki HANAMURA

IPC: H01L51/50

CPC classification number: H01L51/504 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/5044 ,  H01L51/5056 ,  H01L51/5072

Abstract: Disclosed herein is a light-emitting element, including: a cathode; an anode; and a light-emitting unit, in which the light-emitting unit includes a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a third light-emitting layer, which are laminated from the anode side to the cathode side, in which each of the second and third light-emitting layers is configured to contain a luminescent material, a host material, and an assist dopant material, in which the intermediate layer is configured to contain the host material and the assist dopant material, and in which, when the concentrations of the assist dopant materials contained in the second light-emitting layer, the third light-emitting layer, and the intermediate layer are respectively expressed by CAssist(EML2), CAssist(EML3), and CAssist(IML), the following Relational Expression (A) is satisfied: CAssist(IML)>CAssist(EML2)≧CAssist(EML3)  (A).

Abstract translation: 本文公开了一种发光元件，包括：阴极; 阳极; 以及发光单元，其中所述发光单元包括从阳极侧到所述第二发光层的第一发光层，中间层，第二发光层和第三发光层， 阴极侧，其中第二和第三发光层中的每一个被配置为包含发光材料，主体材料和辅助掺杂剂材料，其中中间层被配置为容纳主体材料和辅助掺杂剂材料 并且其中，当包含在第二发光层，第三发光层和中间层中的辅助掺杂剂材料的浓度分别由CAssist（EML2），CAssist（EML3）和CAssist（ IML），满足以下关系式（A）：CAssist（IML）> CAssist（EML2）≧CAssist（EML3）（A）。

公开(公告)号：US20150287947A1

公开(公告)日：2015-10-08

申请号：US14643439

申请日：2015-03-10

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidetoshi YAMAMOTO ,  Akio FUKASE

IPC: H01L51/50

CPC classification number: H01L51/504 ,  H01L51/0054 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/5044 ,  H01L51/5056 ,  H01L51/5072

Abstract: Disclosed herein is a light-emitting element, including: a cathode; an anode; and a light-emitting unit, in which the light-emitting unit includes a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer, which are laminated from the anode side to the cathode side, in which each of the first, second, and third light-emitting layers is configured to contain a luminescent material, a host material, and an assist dopant material, and in which, when the contents of the assist dopant materials contained in the first, second, and third light-emitting layers are respectively expressed by CAssist(EML1), CAssist(EML2) and CAssist(EML3), the following Relational Expression (A) is satisfied: CAssist(EML1)≧CAssist(EML2)>CAssist(EML3)≧0  (A).

Abstract translation: 本文公开了一种发光元件，包括：阴极; 阳极; 以及发光单元，其中所述发光单元包括从阳极侧至阴极侧层压的第一发光层，第二发光层和第三发光层， 其中，所述第一，第二和第三发光层中的每一个被配置为包含发光材料，主体材料和辅助掺杂剂材料，并且其中当所述辅助掺杂剂材料的含量包含在所述第一， ，第三发光层分别由CAssist（EML1），CAssist（EML2）和CAssist（EML3）表示，满足以下关系式（A）：CAssist（EML1）≥CAssist（EML2）> CAssist（EML3） ≥0（A）。

公开(公告)号：US20140332835A1

公开(公告)日：2014-11-13

申请号：US14319410

申请日：2014-06-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuji FUJITA ,  Hidetoshi YAMAMOTO

IPC: H01L33/50

CPC classification number: H01L33/504 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0069 ,  H01L51/0071 ,  H01L51/5052 ,  H01L2251/308

Abstract: The light emitting element of the embodiment includes an anode; a cathode; a visible light emitting layer provided between the anode and the cathode and emitting visible light; and a carrier trapping layer containing a thiadiazole based compound represented by the following formula (1). [In formula (1), A indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, and B indicates a hydrogen atom, an alkyl group, an aryl group which may have a substituent, an arylamino group, or a triaryl amine, or may form a ring.]

Abstract translation: 该实施例的发光元件包括阳极; 阴极 设置在阳极和阴极之间并发射可见光的可见光发射层; 和含有下式（1）表示的噻二唑类化合物的载体捕获层。 [式（1）中，A表示氢原子，烷基，可具有取代基的芳基，芳基氨基或三芳基胺，B表示氢原子，烷基，芳基， 可以具有取代基，芳基氨基或三芳基胺，或者可以形成环。]