公开(公告)号：US10527778B2

公开(公告)日：2020-01-07

申请号：US15759232

申请日：2016-09-08

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo Yuki ,  Katsutoshi Kikuchi ,  Hayato Nakamura ,  Makoto Yoshimura ,  Hiromi Enomoto ,  Mitsuhiro Murata ,  Hisashi Watanabe ,  Hirotoshi Yasunaga

IPC: G04B19/30 ,  F21V8/00

Abstract: A lighting device includes a light guide plate, a first light source, a second light source, and a case. The light guide plate includes plate surfaces and an outer peripheral surface. One of the plate surfaces is configured as a light exiting surface. Sections of the outer peripheral surface on opposite sides from each other relative to the center of the light exiting surface are configured as a first light entering surface and a second light entering surface, respectively. The first light source is disposed opposite the first light entering surface. The second light source is disposed opposite the second light entering surface. The case includes an annular wall portion surrounding an outer circumference of the light guide plate, the first light source, and the second light source. The annular wall portion includes light source non-disposing areas between the first light entering surface and the second light entering surface.

公开(公告)号：US10261360B2

公开(公告)日：2019-04-16

申请号：US15517487

申请日：2015-10-02

Applicant: Sharp Kabushiki Kaisha

Inventor： Masatsugu Masuda ,  Hideaki Fujii ,  Takeshi Kawahara ,  Toshiyuki Tanaka ,  Kenichi Yoshimura ,  Makoto Yoshimura ,  Masataka Miyata ,  Takehiro Shiomoto

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  F21V9/30 ,  H01L33/50 ,  C09B11/04 ,  C09K11/77 ,  C09K11/08

Abstract: A liquid crystal display device includes: a liquid crystal display panel that includes red color filters, green color filters, and blue color filters; and an illumination device that illuminates the liquid crystal display panel with white light. The illumination device includes light-emitting elements that emit blue light, a green phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits green light, and a red phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits red light. The blue color filters are made of a colored material that contains a dye, and the chromaticity values x and y of the white light emitted from the illumination device satisfy the relationships 0.24

公开(公告)号：US11079627B2

公开(公告)日：2021-08-03

申请号：US16284374

申请日：2019-02-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masatsugu Masuda ,  Hideaki Fujii ,  Takeshi Kawahara ,  Toshiyuki Tanaka ,  Kenichi Yoshimura ,  Makoto Yoshimura ,  Masataka Miyata ,  Takehiro Shiomoto

IPC: G02F1/13357 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1333 ,  F21V9/30 ,  C09K11/61 ,  G02B5/22 ,  C09B11/04 ,  C09K11/77 ,  H01L33/50 ,  C09K11/08

Abstract: A liquid crystal display device includes: a liquid crystal display panel that includes red color filters, green color filters, and blue color filters; and an illumination device that illuminates the liquid crystal display panel with white light. The illumination device includes light-emitting elements that emit blue light, a green phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits green light, and a red phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits red light. The blue color filters are made of a colored material that contains a dye, and the chromaticity values x and y of the white light emitted from the illumination device satisfy the relationships 0.24

公开(公告)号：US10274142B2

公开(公告)日：2019-04-30

申请号：US15763583

申请日：2016-09-26

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Hisashi Watanabe ,  Ryuzo Yuki ,  Hirotoshi Yasunaga ,  Mitsuhiro Murata ,  Makoto Yoshimura ,  Hiromi Enomoto

IPC: F21K9/20 ,  F21S2/00 ,  F21V8/00 ,  F21Y115/10 ,  G02F1/1335

Abstract: A backlight device includes LEDs, a light guide plate, an LED substrate, an optical sheet, and a low light-transmissive member. The light guide plate includes a light entering end surface, a light exiting plate surface, and an opposite plate surface. The LED substrate is disposed such that at least a section of the LED substrate overlaps a light entering-side edge section that is an edge section of the light guide plate on the light entering end surface side. The optical sheet includes a light entering-side edge section overlapping section disposed on the light exiting plate surface side of the light guide plate to overlap the light entering-side edge section. The low light-transmissive member disposed on the light entering-side edge section overlapping section of the optical sheet. The low light-transmissive member has a light transmissivity lower than that of other sections of the optical sheet.