公开(公告)号：US20210242181A1

公开(公告)日：2021-08-05

申请号：US17161023

申请日：2021-01-28

Applicant: NICHIA CORPORATION

Inventor： Toru HASHIMOTO

IPC: H01L25/075 ,  H01L33/58 ,  H01L33/60 ,  H01L33/62

Abstract: A method for manufacturing a planar light source includes preparing a wiring substrate including a first region that includes a light source placement section; disposing a light-reflective member in the first region of the wiring substrate; preparing a light guide plate including a first major surface, a second major surface opposite to the first major surface, and a first hole extending from the first major surface to the second major surface; disposing a light source on the light-reflective member at the light source placement section; disposing the light guide plate on the wiring substrate to cause the wiring substrate and the second major surface of the light guide plate to face each other to cause the light source to be positioned in the first hole; and disposing a first light-transmitting member in the first hole.

公开(公告)号：US20210239298A1

公开(公告)日：2021-08-05

申请号：US17163516

申请日：2021-01-31

Applicant: NICHIA CORPORATION

Inventor： Toru HASHIMOTO

IPC: F21V9/40

Abstract: A light emitting module includes at least one light source, a light guide member having a demarcating groove configured to demarcate at least one light emitting region, and at least one light source arrangement part located in each of the at least one light emitting region and accommodating a light source, a first light-reflecting member disposed in the demarcating groove, and a wavelength converting member covering an upper surface of the light guide member.

公开(公告)号：US20200161497A1

公开(公告)日：2020-05-21

申请号：US16683956

申请日：2019-11-14

Applicant: NICHIA CORPORATION

Inventor： Toru HASHIMOTO ,  Masato AIHARA

IPC: H01L33/00 ,  H01L33/60 ,  H01L33/62 ,  H01L25/075

Abstract: A method of manufacturing a light-emitting device includes: providing an intermediate structure including: layered bodies in a light-reflective member, a semiconductor layered body, and a light-transmissive member; forming at least one first groove at a first surface of the intermediate structure; forming at least one electrically conductive film, each disposed on the first surface and inside a respective one of the at least one first groove; exposing a portion of the light-reflective member in an inter-electrode region; forming a hole having a width equal to or greater than a width of the at least one first groove and having a depth equal to or greater than a depth of the at least one first groove; and cutting the light-reflective member and the at least one electrically conductive film along the at least one first groove to obtain a plurality of light-emitting devices.

公开(公告)号：US20200044129A1

公开(公告)日：2020-02-06

申请号：US16527598

申请日：2019-07-31

Applicant: NICHIA CORPORATION

Inventor： Toru HASHIMOTO

IPC: H01L33/62 ,  H01L25/075 ,  H01L33/36

Abstract: Provided is a method for producing a light emitting device, including the steps of providing an intermediate body including a precursor substrate including a base member that includes a top surface and a first bottom surface, a pair of first wiring portions on the top surface, and a pair of second wiring portions electrically connected with the pair of first wiring portions respectively and positioned between the top surface and the first bottom surface; and a light emitting element on the first wiring portions; removing a part of the base member off the first bottom surface of the base member to thin the base member so that a second bottom surface of the base member is formed; and forming a pair of external electrodes, to be electrically connected with the pair of second wiring portions respectively, on the second bottom surface.

公开(公告)号：US20170062671A1

公开(公告)日：2017-03-02

申请号：US15252219

申请日：2016-08-31

Applicant: NICHIA CORPORATION

Inventor： Toru HASHIMOTO ,  Yukihiro SHIBANO

IPC: H01L33/50 ,  H01L33/58

CPC classification number: H01L33/507 ,  H01L33/486 ,  H01L33/50 ,  H01L33/502 ,  H01L33/52 ,  H01L33/58 ,  H01L33/60 ,  H01L2224/16225 ,  H01L2224/97 ,  H01L2933/0041 ,  H01L2933/005 ,  H01L2933/0058

Abstract: A soluble member is provided on a light emitting surface of a light emitting element. The soluble member is soluble in a solvent. The soluble member has a first surface facing the light emitting surface, a second surface opposite to the first surface in the light emitting direction, and a soluble member outer peripheral side surface provided between the first surface and the second surface. A light-blocking member made of a material which is not soluble in the solvent is provided to cover a light emitting element outer peripheral side surface and the soluble member outer peripheral side surface so that an inner side wall of the light-blocking member contacts the soluble member outer peripheral side surface. The soluble member is removed using the solvent to provide a recess surrounded by the inner side wall of the light-blocking member. A first light-transmissive member is provided in the recess.

Abstract translation: 可溶性构件设置在发光元件的发光表面上。 可溶性成分可溶于溶剂。 可溶性构件具有面向发光面的第一表面，与发光方向上的第一表面相对的第二表面和设置在第一表面和第二表面之间的可溶性构件外周侧表面。 设置由不溶于溶剂的材料制成的遮光部件，以覆盖发光元件外周侧面和可溶部件外周侧面，使得遮光部件的内侧壁与 可溶部件外周侧面。 使用溶剂除去可溶性构件以提供由遮光构件的内侧壁包围的凹部。 第一透光构件设置在凹部中。

公开(公告)号：US20230060023A1

公开(公告)日：2023-02-23

申请号：US17972879

申请日：2022-10-25

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Toru HASHIMOTO ,  Keiji EMURA

IPC: F21V8/00

Abstract: A light emitting module including: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole; and a light source disposed in the light source placement part. In the schematic top view: the light adjusting hole is not positioned on a first straight line connecting (i) a center of the light source and (ii) a point in the sectioning groove that is farthest from the center of the light source, and a first lateral face of the light adjusting hole has a first region, and a line normal to the first region is oblique to a second straight line connecting (i) the center of the light source and (ii) a point in the sectioning groove that is closest to the center of the light source.

公开(公告)号：US20220344535A1

公开(公告)日：2022-10-27

申请号：US17860664

申请日：2022-07-08

Applicant: NICHIA CORPORATION

Inventor： Toru HASHIMOTO ,  Masato AIHARA

IPC: H01L33/00 ,  H01L33/60 ,  H01L25/075 ,  H01L33/62

Abstract: A light-emitting device includes: a structure including: a layered body including: a light-emitting element comprising a pair of electrodes, and a light-transmissive member disposed on the light-emitting element; and a light-reflective member covering lateral surfaces of the layered body, in which structure has a first surface at which the pair of electrodes are exposed from the light-reflective member, and a second surface connected to the first surface, the second surface being a surface of the light-reflective member. A pair of first electrically conductive films disposed on the first surface of the structure such that each of the pair of first electrically conductive films is connected to a respective one of the pair of electrodes. A pair of second electrically conductive films disposed on the second surface of the structure, each of the pair of electrically conductive films being continuous with the pair of first electrically conductive films.

公开(公告)号：US20220066088A1

公开(公告)日：2022-03-03

申请号：US17446505

申请日：2021-08-31

Applicant: NICHIA CORPORATION

Inventor： Keiji EMURA ,  Takuya NAKABAYASHI ,  Toru HASHIMOTO

IPC: F21V8/00

Abstract: A method of manufacturing a light emitting module includes: providing an intermediate that includes a light guide having a first principal face and a second principal face opposing the first principal face, a plurality of light sources disposed on the second principal face of the light guide, and a wiring layer disposed on the second principal face and electrically connected to the plurality of light sources; allowing the plurality of light sources to emit light and measuring optical characteristics of the emitted light; and forming an optical characteristic correcting element in the intermediate based on the measured optical characteristics.

公开(公告)号：US20210382354A1

公开(公告)日：2021-12-09

申请号：US17337030

申请日：2021-06-02

Applicant: NICHIA CORPORATION

Inventor： Yasunori SHINOMIYA ,  Toru HASHIMOTO

IPC: G02F1/1335 ,  F21V33/00 ,  F21V23/00 ,  F21V8/00

Abstract: A planar light source includes a wiring substrate including an insulating layer comprising a first through-hole, a second through-hole, a first wiring layer, and a second wiring layer; a light source including a first electrode and a second electrode, a light guide member; a first wiring member including a first portion filling the first through-hole and electrically connected to the first electrode and a second portion disposed below the insulating layer, continuous with the first portion, and in contact with the first wiring layer; and a second wiring member including a third portion filling the second through-hole and electrically connected to the second electrode and a fourth portion disposed below the insulating layer, continuous with the third portion, and in contact with the second wiring layer. The first and second wiring layers are arranged at opposite sides of the first and second through-holes in a top plan view.

公开(公告)号：US20210050488A1

公开(公告)日：2021-02-18

申请号：US17086975

申请日：2020-11-02

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tadaaki IKEDA ,  Toru HASHIMOTO ,  Yukiko YOKOTE

IPC: H01L33/50 ,  H01L25/075 ,  H01L33/58 ,  H01L33/62 ,  H01L33/64 ,  C09K11/61 ,  H01L33/60

Abstract: A light emitting device includes a first light emitting element including a rectangular first light extraction surface, a second light emitting element including a rectangular second light extraction surface and emitting light having an emission peak wavelength different from an emission peak wavelength of the first light emitting element, and a light-transmissive member covering the first light extraction surface and the second light extraction surface. The light-transmissive member includes a first light-transmissive layer facing the first light extraction surface and the second light extraction surface, a wavelength conversion layer located on the first light-transmissive layer, and a second light-transmissive layer located on the wavelength conversion layer. The first light-transmissive layer contains a first matrix and first diffusive particles. The wavelength conversion layer contains a second matrix and wavelength conversion particles. The second light-transmissive layer contains a third matrix and second diffusive particles.