公开(公告)号：US11187842B2

公开(公告)日：2021-11-30

申请号：US17076150

申请日：2020-10-21

Applicant: NICHIA CORPORATION

Inventor： Daisuke Kasai

IPC: F21V8/00 ,  H01L33/54 ,  H01L33/60 ,  F21Y105/16

Abstract: A light emitting module includes: a light emitting element unit including: a light-emitting element that has a main-light-emission surface, an electrode-formation surface and a side-surface, a light-transmissive member that covers the main-light-emission surface, and a first light-reflection member that covers the side-surface; a light-transmissive light guide plate including a first main-surface as a light emission surface, and a second main-surface opposed to the first main-surface and has a recess accommodating the light emitting element unit so that the first light-reflection member is partially arranged out of the recess in a cross-section; a light-transmissive interposition member that contacts an interior side-surface of the recess and an exterior side-surface of the light emitting element unit; and a second light-reflection member that partially covers the second main-surface and the interposition member. The interposition member is at least partially exposed from the second light-reflection member in a plan view. The hardness of the interposition member is lower than a hardness of the first light-reflection member and a hardness of the second light-reflection member.

公开(公告)号：US11048035B2

公开(公告)日：2021-06-29

申请号：US16985449

申请日：2020-08-05

Applicant: NICHIA CORPORATION

Inventor： Daisuke Kasai

IPC: F21V8/00 ,  H01L25/13 ,  H01L33/58 ,  H01L33/48

Abstract: A light-emitting module includes: a lightguide plate including a first primary surface, a second primary surface opposite to the first primary surface, and unit regions arranged in a one-dimensional or two-dimensional array, and defining first recesses in the first primary surface, each of the first recesses located in a respective one of the unit regions; light sources disposed at the first primary surface of the lightguide plate and each disposed in the first recess of a corresponding one of the unit regions; and a plurality of light-transmissive members each disposed in the first recess in a respective one of the unit regions so as to cover at least a portion of each lateral surface of its corresponding light source. The unit regions include at least one first unit region, in which an upper surface of the light-transmissive member forms a first depression extending toward a bottom of the first recess.

公开(公告)号：US10930624B2

公开(公告)日：2021-02-23

申请号：US16529309

申请日：2019-08-01

Applicant: NICHIA CORPORATION

Inventor： Daisuke Kasai ,  Tadao Hayashi ,  Toru Hashimoto

IPC: H01L25/075 ,  H01L33/60 ,  H01L33/50 ,  F21V8/00

Abstract: A light-emitting module includes a light-emitting element unit including a light-emitting element, a light-transmissive member covering a main light-emitting surface of the light-emitting element, and a first light-reflective member covering lateral surfaces of the light-emitting element; a light-transmissive light-guiding plate having a first main surface and a second main surface having a recess accommodating the light-emitting element unit; a second light-reflective member covering the second main surface and the light-emitting element unit; and a light-transmissive bonding member disposed in contact with inner lateral surfaces of the recess and outer lateral surfaces of the light-emitting element unit. At least a portion of the first light-reflective member is located outside the recess in a cross-sectional view, and is in contact with the light-transmissive bonding member. The light-transmissive bonding member has an inclined surface forming an acute angle with a corresponding outer lateral surface of the first light-reflective member.