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    LIGHT-EMITTING DEVICE AND BACKLIGHT INCLUDING LIGHT-EMITTING DEVICE
    1.
    发明申请
    LIGHT-EMITTING DEVICE AND BACKLIGHT INCLUDING LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20210183831A1

    公开(公告)日：2021-06-17

    申请号：US17190698

    申请日：2021-03-03

    Applicant: NICHIA CORPORATION

    Inventor： Atsushi YAMAMOTO ,  Keiko ONO ,  Saiki YAMAMOTO ,  Tomokazu MARUYAMA ,  Takeshi MORIKAWA ,  Seitaro AKAGAWA

    IPC: H01L25/075 ,  H01L33/50 ,  H01L33/62

    Abstract: The light-emitting device includes a first light-emitting element having an emission peak wavelength of 430 nm or more and less than 490 nm, a second light-emitting element having an emission peak wavelength of 490 nm or more and 570 nm or less, a support body at which the first light-emitting element and the second light-emitting element are disposed, and a light-transmissive member containing a red phosphor and covering the first light-emitting element and the second light-emitting element. A content density of the red phosphor in the light-transmissive member in a space between the first and second light-emitting elements is higher in a part below an upper surface of the second light-emitting element than in a part above the upper surface thereof.

    LIGHT EMITTING DEVICE
    2.
    发明申请
    LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20180097163A1

    公开(公告)日：2018-04-05

    申请号：US15719561

    申请日：2017-09-29

    Applicant: NICHIA CORPORATION

    Inventor： Takeshi MORIKAWA

    IPC: H01L33/62 ,  H01L33/48 ,  H01L33/64

    CPC classification number: H01L33/62 ,  H01L33/486 ,  H01L33/647

    Abstract: A light emitting device includes a resin molded body, which includes a front surface having an opening, a bottom surface opposite to the opening a front-rear direction of the light emitting device, and first and second wall portions extending from the bottom surface to the front surface. A first lead includes a first bottom portion provided on the bottom surface, first and second side portions provided in the first and second wall portions, respectively. A second lead include a second bottom portion provided on the bottom surface apart from the first lead to provide a first resin region, third and fourth side portions provided in the first and second wall portions apart from the first lead to provide second and third resin regions, respectively. The first resin region is provided between the second resin region and the third resin region viewed in the front-rear direction.

    LIGHT-EMITTING DEVICE
    5.
    发明申请
    LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20220334301A1

    公开(公告)日：2022-10-20

    申请号：US17810760

    申请日：2022-07-05

    Applicant: NICHIA CORPORATION

    Inventor： Shinichi SAWABE ,  Yuki OGAWA ,  Takeshi MORIKAWA

    IPC: F21V8/00

    Abstract: A light-emitting device includes first and second light-emitting elements arranged along a first direction; at least one light-transmissive member having a lateral surface and covering the upper surfaces of the first and second light-emitting elements; and a light-reflective member in contact with at least portions of the lateral surfaces of the first and second light-emitting elements, and the lateral surface of the light-transmissive member. The light-transmissive member has first and second surfaces exposed from the light-reflective member and located above the upper surfaces of the first and second light-emitting elements, respectively. The light-reflective member includes a first portion located between the first surface and the second surface in the first direction above the first and second surfaces. The first portion includes at least one concave curved surface in a first cross-section extending along the first direction and perpendicular to the upper surface of the first light-emitting element.

    DISPLAY DEVICE AND HEAD-MOUNTED DISPLAY
    6.
    发明申请
    DISPLAY DEVICE AND HEAD-MOUNTED DISPLAY 审中-公开

    公开(公告)号：US20200089000A1

    公开(公告)日：2020-03-19

    申请号：US16497813

    申请日：2018-03-30

    Applicant: Sharp Kabushiki Kaisha ,  Nichia Corporation

    Inventor： Tokumi HAYASHI ,  Kenichi HATSUDA ,  Seitaro AKAGAWA ,  Takeshi MORIKAWA

    IPC: G02B27/01 ,  G02F1/13357

    Abstract: A display device includes a display panel, a lighting device, at least one light source, a lighting controller, a complex fluoride red phosphor, and a nitride red phosphor. The one light source includes a blue light emitting element and a red phosphor configured to emit red light when excited by the blue light from the blue light emitting element. The lighting controller is configured to control driving of the light source in synchronization with the image display by the display panel so that a one-frame display period in the display panel includes a turn-on period and a turn-off period. The complex fluoride red phosphor constitutes the red phosphor and has a content ratio in a range from 50% to 85% inclusive. The nitride red phosphor constitutes the red phosphor and has a content ratio in a range from 15% to 50% inclusive.

    LIGHT EMITTING DEVICE
    7.
    发明申请
    LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20180175255A1

    公开(公告)日：2018-06-21

    申请号：US15848695

    申请日：2017-12-20

    Applicant: NICHIA CORPORATION

    Inventor： Takeshi MORIKAWA

    IPC: H01L33/50 ,  H01L25/075 ,  G02F1/1335 ,  H01L33/48 ,  H01L33/56 ,  F21V8/00 ,  C09K11/08

    CPC classification number: H01L33/504 ,  C09K11/0883 ,  F21Y2115/10 ,  G02B6/0068 ,  G02F1/133603 ,  H01L25/0753 ,  H01L33/486 ,  H01L33/505 ,  H01L33/507 ,  H01L33/508 ,  H01L33/56 ,  H05B33/04

    Abstract: A light emitting device includes a first light emitting element configured to emit red light, a second light emitting element configured to emit green light, a third light emitting element configured to emit blue light, and a translucent member covering the first, second and third light emitting elements. The translucent member includes a wavelength conversion substance configured to absorb the blue light of the third light emitting element and to emit light. The first light emitting element, the second light emitting element, and the third light emitting element are connected in series. At the same forward current value, a radiant flux of the third light emitting element is greater than a radiant flux of the first light emitting element and a radiant flux of the second light emitting element. The wavelength conversion substance includes a phosphor material configured to emit light having a color between green and red.

    METHOD OF MANUFACTURING IMAGE DISPLAY DEVICE AND METHOD OF SELECTING COLOR FILTER
    8.
    发明申请
    METHOD OF MANUFACTURING IMAGE DISPLAY DEVICE AND METHOD OF SELECTING COLOR FILTER 有权
    制造图像显示装置的方法和选择彩色滤光片的方法

    公开(公告)号：US20150131043A1

    公开(公告)日：2015-05-14

    申请号：US14539034

    申请日：2014-11-12

    Applicant: NICHIA CORPORATION

    Inventor： Atsushi YAMAMOTO ,  Takeshi MORIKAWA ,  Koji KAJIKAWA

    IPC: G02F1/1335

    CPC classification number: G02F1/133516 ,  G02F2001/133614

    Abstract: A method of manufacturing an image display device which is configured to produce high luminance while maintaining color reproductivity and a method of efficiently selecting a combination of a light emitting device and a color filter. A method of manufacturing an image display device includes preparing a light emitting device which has a light source, a green fluorescent material and a red fluorescent material activated with tetravalent manganese ions, and configured to emit light which includes a visible light region, providing a color filter candidate which include red, green, and blue pixels in which the ratio of an integral value of the wavelength range of 560 to 640 nm with respect to the ratio of an integral value of the wavelength range of 460 to 640 nm in a spectral transmittance curve of the green pixel is 23% or greater, providing a color filter configured to satisfy a NTSC ratio of 65% or greater when the color filter candidate and the light emitting device are combined, and constructing an image display device with the use of the color filter, the light emitting device, and a controlling member for optical transmission.

    Abstract translation: 一种制造图像显示装置的方法，其被配置为在保持颜色再现性的同时产生高亮度，以及有效地选择发光装置和滤色器的组合的方法。 一种制造图像显示装置的方法包括制备具有光源，绿色荧光材料和用四价锰离子活化的红色荧光材料的发光装置，并且被配置为发射包括可见光区域的光，提供颜色 滤波器候选，其包括红色，绿色和蓝色像素，其中560至640nm的波长范围的积分值的比率与在波长范围为460至640nm的光谱透射率的积分值的比率 绿色像素的曲线为23％以上，提供了一种滤色器，其配置为当滤色片候选和发光器件组合时满足65％或更大的NTSC比，并且使用图像显示装置构建图像显示装置 彩色滤光片，发光装置，以及光传输用的控制构件。

    LIGHT SOURCE AND DRIVING METHOD OF LIGHT SOURCE
    9.
    发明公开
    LIGHT SOURCE AND DRIVING METHOD OF LIGHT SOURCE 审中-公开

    公开(公告)号：US20240334575A1

    公开(公告)日：2024-10-03

    申请号：US18619067

    申请日：2024-03-27

    Applicant: NICHIA CORPORATION

    Inventor： Hajime AKIMOTO ,  Naoto FUJIWARA ,  Takeshi MORIKAWA ,  Akira HORI

    IPC: H05B47/16 ,  F21V9/30 ,  F21Y113/13 ,  F21Y115/10 ,  H05B45/44

    CPC classification number: H05B47/16 ,  F21V9/30 ,  H05B45/44 ,  F21Y2113/13 ,  F21Y2115/10

    Abstract: A light source including a light-emitting device including a substrate, and a first light-emitting element and a second light-emitting element that are located on the substrate. The light source further includes a drive circuit to supply a current to drive the light-emitting device, a switch configured to switch between a first state of supplying a current to only the first light-emitting element and a second state of supplying a current to only the second light-emitting element, and a timing controller configured to control a timing of an operation of the switch. A light emission peak wavelength of the first light-emitting element is 430 nm or greater and less than 490 nm. A light emission peak wavelength of the second light-emitting element is 490 nm or greater and less than 570 nm. A forward voltage of the second light-emitting element is less than a forward voltage of the first light-emitting element.

    LIGHT-EMITTING DEVICE
    10.
    发明申请
    LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20220066085A1

    公开(公告)日：2022-03-03

    申请号：US17446286

    申请日：2021-08-27

    Applicant: NICHIA CORPORATION

    Inventor： Shinichi SAWABE ,  Yuki OGAWA ,  Takeshi MORIKAWA

    IPC: F21V8/00

    Abstract: A light-emitting device includes first and second light-emitting elements arranged along a first direction; at least one light-transmissive member having a lateral surface and covering the upper surfaces of the first and second light-emitting elements; and a light-reflective member in contact with at least portions of the lateral surfaces of the first and second light-emitting elements, and the lateral surface of the light-transmissive member. The light-transmissive member has first and second surfaces exposed from the light-reflective member and located above the upper surfaces of the first and second light-emitting elements, respectively. The light-reflective member includes a first portion located between the first surface and the second surface in the first direction above the first and second surfaces. The first portion includes at least one concave curved surface in a first cross-section extending along the first direction and perpendicular to the upper surface of the first light-emitting element.

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