公开(公告)号：US09971081B1

公开(公告)日：2018-05-15

申请号：US15881849

申请日：2018-01-29

Applicant: Sharp Kabushiki Kaisha

Inventor： Yoshinobu Hirayama ,  Takao Imaoku ,  Takeshi Ishida ,  Ryuzo Yuki ,  Shugo Yagi

IPC: F21V7/04 ,  F21V8/00 ,  G02F1/1333

CPC classification number: G02B6/0038 ,  G02B6/00 ,  G02B6/0036 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0061 ,  G02B6/0085 ,  G02B6/0088 ,  G02B6/009 ,  G02F1/133308 ,  G02F2001/133314 ,  G02F2001/133317

Abstract: A backlight unit includes LEDs, a light guide plate, a prism sheet, exiting light reflecting portions, prisms, concave lenticular lenses, and flat portions. The concave lenticular lenses are configured such that an occupancy rate of concave cylindrical lenses with respect to the second direction is higher in an area closer to a light entering surface with respect to the first direction and the occupancy rate is lower in an area farther from the light entering surface. The flat portions are formed adjacent to the concave cylindrical lenses with respect to the second direction such that an occupancy rate of flat portions with respect to the second direction is lower in an area closer to a light entering surface with respect to the first direction and the occupancy rate of the flat portions with respect to the second direction is higher in an area farther from the light entering surface.

公开(公告)号：US09915770B2

公开(公告)日：2018-03-13

申请号：US15329662

申请日：2015-07-22

Applicant: Sharp Kabushiki Kaisha

Inventor： Yoshinobu Hirayama ,  Takao Imaoku ,  Takeshi Ishida ,  Ryuzo Yuki ,  Shugo Yagi

IPC: F21V7/04 ,  F21V8/00 ,  G02F1/1333

CPC classification number: G02B6/0038 ,  G02B6/00 ,  G02B6/0036 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0061 ,  G02B6/0085 ,  G02B6/0088 ,  G02B6/009 ,  G02F1/133308 ,  G02F2001/133314 ,  G02F2001/133317

Abstract: A backlight unit includes LEDs, a light guide plate, a prism sheet, exiting light reflecting portions, prisms, concave lenticular lens lenses, and flat portions. The concave lenticular lenses are configured such that an occupancy rate of concave cylindrical lenses with respect to the second direction is higher in an area closer to a light entering surface with respect to the first direction and the occupancy rate is lower in an area farther from the light entering surface. The flat portions are formed adjacent to the concave cylindrical lenses with respect to the second direction such that an occupancy rate of flat portions with respect to the second direction is lower in an area closer to a light entering surface with respect to the first direction and the occupancy rate of the flat portions with respect to the second direction is higher in an area farther from the light entering surface.

公开(公告)号：US09778411B2

公开(公告)日：2017-10-03

申请号：US15306800

申请日：2015-05-15

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo Yuki ,  Takeshi Ishida ,  Mitsuhiro Murata ,  Hirotoshi Yasunaga

IPC: G02F1/1339 ,  F21V8/00 ,  B60K35/00 ,  B60K37/02 ,  G02F1/1335 ,  G02F1/1333

CPC classification number: G02B6/0088 ,  B60K35/00 ,  B60K37/02 ,  B60K2350/106 ,  B60K2350/203 ,  B60K2350/2095 ,  G02B6/005 ,  G02F1/133615 ,  G02F1/1339 ,  G02F2001/133322 ,  G02F2201/46 ,  G02F2201/54

Abstract: A backlight device 12 includes LEDs 17, an optical member 16 that applies optical effects to light from the LEDs 17 and has a through hole 23 that is through a thickness thereof, and a restricting member 26 having a communication hole 27 that is communicated with the through hole 23. The restricting member 26 is inserted in the through hole 23 to be in contact with an inner surface of the through hole 23 to restrict movement of the optical member 16 along a plate surface of the optical member 16.

公开(公告)号：US09671547B2

公开(公告)日：2017-06-06

申请号：US14395895

申请日：2013-04-18

Applicant: Sharp Kabushiki Kaisha

Inventor： Ichiro Umekawa ,  Hirofumi Oosawa ,  Takeshi Ishida ,  Ryuzo Yuki ,  Masaki Kageyama ,  Shugo Yagi

IPC: F21V8/00

CPC classification number: G02B6/0053 ,  G02B6/0011 ,  G02B6/0038 ,  G02B6/0073

Abstract: Provided are an illumination device capable of improving the uniformity in brightness of the illumination light, and a display device using the same. An illumination device is provided with: a plurality of light sources arranged in a row in one direction; and a light guide plate which has, along a side edge face, a light receiving face facing the light source, guides light entering through the light receiving face, and outputs illumination light from a light emitting surface disposed on the front surface; the light guide plate having a plurality of prisms and a plurality of prisms provided in an indented manner on the front or rear surface and arranged in a row along the longitudinal direction of the light receiving face; the prisms being formed spanning between the light receiving face and the opposing face opposite the light receiving face; and the prisms being formed, between adjacent prisms, deeper than the prisms within a predetermined range in the vicinity of the light receiving face.

公开(公告)号：US20150277029A1

公开(公告)日：2015-10-01

申请号：US14429864

申请日：2013-09-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Hisashi Watanabe ,  Ryuzo Yuki ,  Takeshi Ishida

IPC: F21V8/00

CPC classification number: G02B6/0088 ,  G02B6/005 ,  G02F1/133308 ,  G02F1/133615 ,  G02F2001/133314

Abstract: In a backlight (20) including a frame (22) having an opening (22a), and a light guide plate assembly (23) disposed inside the frame (22) and having a light guide plate (24) and a light source (25), the backlight being configured to emit illumination light through the opening (22a), the frame (22) is formed by bending a metal plate and includes a bottom surface portion (22b) facing a rear surface of the light guide plate (24), a peripheral surface portion (22c) standing on a peripheral edge of the bottom surface portion (22b), and an upper surface portion (22d) bent from an upper end of the peripheral surface portion (22c) to form a peripheral edge of the opening, and an outer shape of the light guide plate assembly (23) is smaller than the opening (22a).

Abstract translation: 在包括具有开口（22a）的框架（22）和布置在框架（22）内部并具有导光板（24）和光源（25）的导光板组件（23）的背光源（20） ），所述背光被配置为通过所述开口（22a）发射照明光，所述框架（22）通过弯曲金属板形成并且包括面向所述导光板（24）的后表面的底面部分（22b） ，位于所述底面部（22b）的周缘部的周面部（22c）和从所述周面部（22c）的上端弯曲的上表面部（22d），形成所述外周面 开口和导光板组件（23）的外形小于开口（22a）。

公开(公告)号：US10345504B2

公开(公告)日：2019-07-09

申请号：US15512590

申请日：2015-10-08

Applicant: Sharp Kabushiki Kaisha

Inventor： Hisashi Watanabe ,  Ryuzo Yuki ,  Mitsuhiro Murata

IPC: F21V8/00 ,  G02F1/1333

Abstract: A backlight device 13 includes LEDs 22, a light guide plate 24, and a light reflecting portion 34. The light guide plate 24 is a plate member and includes a light entrance surface 24a, an opposite edge surface 24d, and a light exit surface 24b. The light entrance surface 24a is an edge surface of the plate member and opposite the LEDs 22 and light emitted by the LEDs 22 enters the light guide plate 24 through the light entrance surface. The opposite edge surface 24d is another edge surface of the plate member that is on an opposite side from the light entrance surface 24a. The light exit surface 24b is a plate surface of the plate member and the light entering through the light entrance surface 24a exits the light guide plate 24 through the light exit surface. The light reflecting portion 34 is disposed on at least the opposite edge surface 24d and reflecting light travelling within the light guide plate 24 toward the opposite edge surface 24d.

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.

公开(公告)号：US10268075B2

公开(公告)日：2019-04-23

申请号：US15539642

申请日：2015-12-18

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo Yuki ,  Hisashi Watanabe ,  Shinya Kadowaki ,  Mitsuhiro Murata ,  Takeshi Ishida ,  Takeshi Masuda

IPC: G02F1/1335 ,  H05B33/08 ,  F21V19/00 ,  F21V23/04

Abstract: A lighting device includes light sources, a light source board, and a casing. The light source board includes a board body portion having a substantially circular outer edge where the light sources are arranged at intervals in a substantially annular shape such that each light source emits light toward a center, an extended portion extending inward from the board body portion, and a trace portion electrically connected to each light source. The casing includes a tubular-shaped side wall portion surrounding the light sources, and a bottom portion disposed opposite the board body portion and having an exit hole therethrough through which the extended portion is inserted and the distal end of the extended portion is extended outside.

公开(公告)号：US10209428B2

公开(公告)日：2019-02-19

申请号：US15539656

申请日：2015-12-18

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo Yuki ,  Hisashi Watanabe ,  Takeshi Masuda ,  Mitsuhiro Murata ,  Shinya Kadowaki ,  Takeshi Ishida

IPC: F21V8/00 ,  G02F1/1335 ,  G02F1/1333 ,  F21S2/00 ,  F21V17/00 ,  F21V17/10

Abstract: A lighting device includes an annular light source including light sources arranged in a circular pattern, a light guide plate having a round shape in a plan view, and a case holding the annular light source and the light guide plate. The light guide plate is disposed inside the annular light source. The light guide plate includes light entering portions, circumferentially aligned portions, and a light emitting portion. The light entering portions are opposed to the light sources. Each circumferentially aligned portion is between the adjacent light entering portions. A dimension of the circumferentially aligned portion in the radial direction is larger than a dimension of the light entering portion in the radial direction. The circumferentially aligned portions are aligned with the light sources in the circumferential direction and configured to contact the light sources when the light guide plate is rotated in the circumferential direction.

公开(公告)号：US10036909B2

公开(公告)日：2018-07-31

申请号：US15550816

申请日：2016-03-03

Applicant: Sharp Kabushiki Kaisha

Inventor： Kohhei Tanaka ,  Tomohiro Kimura ,  Masahiro Mitani ,  Takayuki Nishiyama ,  Hisashi Watanabe ,  Youhei Nakanishi ,  Ryuzo Yuki ,  Masayuki Kanehiro ,  Seiichi Uchida ,  Toshihiro Yanagi

IPC: G02F1/1333 ,  G02F1/1362 ,  F21V8/00 ,  G02F1/1339 ,  G02F1/1341 ,  G09G3/36

CPC classification number: G02F1/133308 ,  G02B6/005 ,  G02B6/0068 ,  G02B6/009 ,  G02F1/1333 ,  G02F1/1339 ,  G02F1/1341 ,  G02F1/134309 ,  G02F1/1345 ,  G02F1/136286 ,  G02F2201/56 ,  G09G3/3648 ,  G09G3/3677 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2380/02

Abstract: A liquid crystal display device (a display device) includes a liquid crystal panel (a display panel) having an outer peripheral edge portion having a substantially circular shape and including linear edge portions that are linear at a part of the outer peripheral edge portion, and flexible printed circuit boards (mounting components) mounted in an outer portion of the liquid crystal display panel to match arrangement of the linear edge portions in a circumferential direction.