公开(公告)号：US20200166803A1

公开(公告)日：2020-05-28

申请号：US16689068

申请日：2019-11-19

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOUZOU KYOUKANE ,  TAKESHI MASUDA ,  HISASHI WATANABE ,  HIROTOSHI YASUNAGA

IPC: G02F1/1335

Abstract: [Object] To provide an illumination device that suppresses degradation of display quality by preventing damage of light source elements, a reflection sheet, and an optical sheet; and a display.[Solution] A backlight device 10 includes: an LED substrate 11; a plurality of LEDs 15 disposed adjacent to each other on the LED substrate 11; an optical member 24 disposed to face the LEDs 15; a reflection sheet 12 disposed on the LED substrate 11 and having a plurality of openings at which the LEDs 15 are disposed; and a support body 17 formed at least in a gap between the reflection sheet 12 and the LEDs 15, at at least one of the plurality of openings, the support body 17 projecting further than the LEDs 15 on a side opposite to the LED substrate 11 and supporting the optical member 24.

公开(公告)号：US20200073174A1

公开(公告)日：2020-03-05

申请号：US16549498

申请日：2019-08-23

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HIROTOSHI YASUNAGA ,  HISASHI WATANABE ,  YOUZOU KYOUKANE

IPC: G02F1/1335

Abstract: A lighting device has a substrate on which a plurality of light emitting elements are arranged side by side, and a reflector configured to diffusely reflect light emitted by the plurality of light emitting elements. The reflector has a predetermined reflector pattern including a light reflection part and a light transmission part. The reflector pattern is formed in the reflector such that the light reflection part overlaps the light emitting elements in front view, where each of the light emitting elements is focused on a center thereof and viewed in front of itself from one side of the substrate on which the light emitting elements are mounted. The reflector is contoured three-dimensionally to include solid portions for covering the light emitting elements one by one in the front view.

公开(公告)号：US20210391515A1

公开(公告)日：2021-12-16

申请号：US17328489

申请日：2021-05-24

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISASHI WATANABE

IPC: H01L33/60 ,  H01L33/56 ,  H01L33/48 ,  H01L25/075 ,  G02F1/13357

Abstract: A tight-emitter-mounted substrate includes a circuit board, and a light emitter disposed on the circuit board. The light emitter has an electrode and an emission part. The electrode is electrically connected to the circuit board. The emission part emits light in accordance with a voltage applied via the electrode. The light-emitter-mounted substrate also includes a reflector facing an emission surface of the emission part. The reflector reflects the light emitted from the emission part. The light-emitter-mounted substrate also includes a transparent layer covering the Hot emitter and reflector on the circuit board. The transparent layer has light transparency.

公开(公告)号：US20210141148A1

公开(公告)日：2021-05-13

申请号：US16487212

申请日：2018-02-15

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISASHI WATANABE ,  HIROTOSHI YASUNAGA ,  YOUZOU KYOUKANE

IPC: F21V8/00

Abstract: A lighting device includes light guide plates each of which includes a light exit section including a light exit surface and a light entering section extending from the light exit section toward a light source row and including an extended end surface as a light entering surface. The light exit section has a thickness dimension that is smaller than that of the light entering section at an extended end thereof. The light guide plates are stacked on each other such that the light exit sections thereof overlap each other seen from a normal direction of the light exit surface. The light entering section of one light guide plate and the light entering section of another light guide plate are disposed next to each other in an arrangement direction of the light sources so as not to overlap each other seen from the normal direction of light exit surface.

公开(公告)号：US20210135066A1

公开(公告)日：2021-05-06

申请号：US17085418

申请日：2020-10-30

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISASHI WATANABE ,  HIROTOSHI YASUNAGA ,  YOUZOU KYOUKANE ,  TAKESHI MASUDA

IPC: H01L33/50 ,  H01L33/60 ,  H01L33/62 ,  H01L33/00

Abstract: A lighting device includes a circuit substrate that includes a wiring circuit, LEDs that are mounted on the circuit substrate and that emit primary light, a phosphor sheet that faces a light emission surface of each of the LEDs and that has a function of converting part of the primary light into secondary light in another wavelength range that differs from the wavelength range, and a selective reflection layer that is composed of dielectric multilayer film, that is disposed between the phosphor sheet and the LEDs, that covers the light emission surface of each of the LEDs, that allows the part of the primary light to be transmitted therethrough, and that reflects part of the secondary light. The selective reflection layer is disposed so as to have convex shapes projecting in a direction opposite a direction toward the circuit substrate in regions that overlap the LEDs.

公开(公告)号：US20210132444A1

公开(公告)日：2021-05-06

申请号：US16620634

申请日：2018-06-08

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISASHI WATANABE

IPC: G02F1/1335 ,  G02F1/13357 ,  H01L25/075

Abstract: A plurality of LEDs (light sources) 16 that are arranged to form a column, each of which includes a electrode 20 for power supply, a plurality of first wires 21 that are connected to the electrode 20 in the plurality of LEDs 16, and a second wire 22 that is connected with each of the plurality of first wires 21 and is pulled out toward one end side in an array direction of the plurality of LEDs 16 are included.

公开(公告)号：US20200227600A1

公开(公告)日：2020-07-16

申请号：US16732716

申请日：2020-01-02

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISASHI WATANABE ,  HIROTOSHI YASUNAGA ,  YOUZOU KYOUKANE ,  TAKESHI MASUDA

IPC: H01L33/54 ,  H01L25/075 ,  H01L33/62 ,  G02F1/13357

Abstract: An LED light source substrate includes a circuit board, LED bare chips, and a high refractive index layer. A wiring circuit is formed on the circuit board. The LED bare chips are mounted on the circuit board. The high refractive index layer is made of a material having light transmissivity and a refractive index higher than 1. The high refractive index layer is disposed astride the LED bare chips to embed the LED bare chips. The high refractive index layer has convex portions protruding to an opposite side to the circuit board at positions at which the LED bare chips are embedded.

公开(公告)号：US20200012150A1

公开(公告)日：2020-01-09

申请号：US16314828

申请日：2017-06-29

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISASHI WATANABE ,  AKIRA SAKAI ,  HIROYUKI HAKOI

IPC: G02F1/1335 ,  G02F1/137 ,  H01L51/52

Abstract: The present invention provides a display device that can display chromatic color(s) and pattern(s) without power consumption in the non-display state (light off state) and an electronic apparatus including the display device. The display device includes a display panel and a transflective reflector disposed on a viewing surface side of the display panel. The transflective reflector includes a reflective polarizer. The reflective polarizer is chromatic and/or the transflective reflector further includes a chromatic layer on a side closer to the viewing surface than the reflective polarizer.

公开(公告)号：US20190285945A1

公开(公告)日：2019-09-19

申请号：US16297327

申请日：2019-03-08

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOUZOU KYOUKANE ,  HISASHI WATANABE ,  HIROTOSHI YASUNAGA

IPC: G02F1/1335

Abstract: A lighting device includes: a board on which a plurality of light emitting elements is arranged in a matrix; and a reflection sheet provided on the board. The reflection sheet has a plurality of apertures that is each superimposed on a corresponding one of the plurality of light emitting elements. The reflection sheet is extended in a predetermined specific extending direction. A protrusion part is provided on the board so as to protrude through the reflection sheet. The protrusion part is integrally formed with the board.

公开(公告)号：US20190258115A1

公开(公告)日：2019-08-22

申请号：US16342391

申请日：2017-10-19

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOUZOU KYOUKANE ,  HISASHI WATANABE ,  HIROTOSHI YASUNAGA

IPC: G02F1/1335

Abstract: A lighting device includes light sources, an optical member, a light-transmissive support portion, and a light scattering portion. The light sources are planarly arranged at intervals. The optical member is disposed on a light exit side to face the plurality of light sources at an interval. The light-transmissive support portion is disposed to be interposed between the adjacent light sources. The light-transmissive support portion is configured to support the optical member by being brought into contact with the optical member from the light source side, and having light transmissivity. The light scattering portion is provided on at least a light irradiation portion of the light-transmissive support portion irradiated with light from the light source.