公开(公告)号：US10802203B2

公开(公告)日：2020-10-13

申请号：US16248504

申请日：2019-01-15

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Takeshi Masuda ,  Takeshi Ishida

IPC: G02F1/1333 ,  F21V8/00 ,  G02F1/1335

Abstract: A lighting device includes a light source having a light exit surface, an optical member covering the light exit surface and applying an optical action to light exiting the light source, and a prism sheet coveting the optical member from an opposite side from the light source, and the prism sheet includes prism portions and a light reflecting portion that covers a part of a surface of the prism portions opposite from the optical member.

公开(公告)号：US10345507B2

公开(公告)日：2019-07-09

申请号：US15522457

申请日：2015-10-29

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo Yuki ,  Mitsuhiro Murata ,  Takeshi Ishida

IPC: F21V7/04 ,  F21V8/00 ,  G02F1/1335

Abstract: A lighting device includes a light source emitting light having an orientation distribution around an optical axis, a light guide plate having a hole and including a light entrance surface, a light exit surface, a non-light exit portion, and a light receiving surface, and a reflecting portion. The light entrance surface is opposite the light source such that the optical axis overlaps the hole. The non-light exit portion is the hole and surrounded by the light exit surface. The light receiving surface is next to the light entrance surface and near the non-light exit portion and receives maximum inclination light including light inclined at a largest angle with respect to the optical axis in a plan view. The reflecting portion is arranged opposite the light receiving surface and reflects the maximum inclination light from the light receiving surface toward the non-light exit portion.

公开(公告)号：US10534126B2

公开(公告)日：2020-01-14

申请号：US16082587

申请日：2017-03-10

Applicant: Sharp Kabushiki Kaisha

Inventor： Hisashi Watanabe ,  Hirotoshi Yasunaga ,  Youzou Kyoukane ,  Takeshi Ishida

IPC: G02B6/00 ,  F21V8/00

Abstract: A backlight device 12 includes LEDs 15, a light guide plate 17 having a light entering edge surface 17a opposite the LEDs 15 and having plate surfaces one of which is alight exit plate surface 17b, and a light collecting portion 22 including unit light collecting portions 22a that extend in a normal direction of the light entering edge surface 17a on the light exit plate surface 17b and are arranged in a perpendicular direction perpendicular to the normal direction. The light guide plate 17 includes an opposite edge portion 23 that is opposite from an end portion thereof having the light entering edge surface 17a, the opposite edge portion 23 has an edge surface a part of which is a curved edge surface 24 having a curved planar shape and the opposite edge portion 23 has the light exit plate surface 17b a part of which is a light collecting portion non-forming section 25 on which no light collecting portion 22 is formed.

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：US09921357B2

公开(公告)日：2018-03-20

申请号：US15188144

申请日：2016-06-21

Applicant: Sharp Kabushiki Kaisha

Inventor： David James Montgomery ,  Takeshi Ishida ,  Hisashi Watanabe

IPC: F21V5/02 ,  F21V8/00

CPC classification number: G02B6/0025 ,  G02B6/00 ,  G02B6/0088

Abstract: A backlight unit includes a lightguide, a light source that emits light to the lightguide, and a barrier layer positioned over the lightguide in a light emitting direction relative to the lightguide. The barrier layer defines a bezel area of the backlight unit, and an active area of the backlight unit from which light is emitted from the lightguide is an area adjacent to a boundary of the bezel area. A prism structure is positioned in the bezel area, wherein stray light emitted from the light source uncoupled to the lightguide is at least partially coupled into the lightguide by the prism structure or directed to a greater degree along the lightguide. The prism structure may be configured as a plurality of lenticular triangular prisms, and may be mounted to a mounting frame, back reflector, or flat panel connector of the backlight unit.

公开(公告)号：US09581860B2

公开(公告)日：2017-02-28

申请号：US14787398

申请日：2014-04-30

Applicant: Sharp Kabushiki Kaisha

Inventor： Hirotoshi Yasunaga ,  Ryuzo Yuki ,  Takeshi Ishida ,  Shinya Kadowaki

IPC: F21V9/14 ,  G02F1/1335 ,  H05B33/14 ,  G02B5/30 ,  H01L33/50

CPC classification number: G02F1/133617 ,  G02B5/3016 ,  G02F1/13362 ,  H01L33/501 ,  H05B33/14

Abstract: An illumination device includes a light source that emits primary light and a wavelength conversion element that converts at least a portion of the primary light from the light source. The wavelength conversion element includes a phosphor layer having phosphors that absorb at least a portion of the primary light from the light source to emit secondary light, which is polarized, and polymers having birefringence. The phosphors have an anisotropic structure and are aligned generally along a first direction, and the polymers have polymer molecules that are aligned generally along the first direction. An angle formed by a direction of a transition dipole moment of each of the phosphors to a delayed phase axis of each of the polymer molecules with respect to the secondary light emitted from the phosphors towards the polymer molecules is 0° to 45°.

Abstract translation: 照明装置包括发射一次光的光源和转换来自光源的初级光的至少一部分的波长转换元件。 波长转换元件包括具有荧光体的荧光体层，该荧光体吸收来自光源的至少一部分初级光以发射被偏振的二次光，以及具有双折射的聚合物。 荧光体具有各向异性结构，并且大致沿着第一方向排列，并且聚合物具有大致沿着第一方向排列的聚合物分子。 每个荧光体的过渡偶极矩的方向与每个聚合物分子相对于从磷光体向聚合物分子发射的次级光的延迟相位所形成的角度为0°至45°。

公开(公告)号：US09423555B2

公开(公告)日：2016-08-23

申请号：US14429864

申请日：2013-09-25

Applicant: Sharp Kabushiki Kaisha

Inventor： Hisashi Watanabe ,  Ryuzo Yuki ,  Takeshi Ishida

IPC: F21V8/00 ,  G02F1/1333 ,  G02F1/1335

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：US20150168631A1

公开(公告)日：2015-06-18

申请号：US14414511

申请日：2013-07-23

Applicant: Sharp Kabushiki Kaisha

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

IPC: F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/0016 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0068 ,  G02B6/0073

Abstract: An illumination device (10) is provided with the following: light sources (11); a light-guide member (12 (13)) that includes a light entry region (Is) and a light exit region (Os) which emits planar light; light entry portions (13a) that are formed in the light entry region (Is) and that oppose the light sources (11); and bright line suppression portions (20) that are formed in the areas between the light entry portions (13a) at the front side of the light entry region (Is), and that include bright line suppression prisms (21) which have a shape that changes the angle of the light emitted in a direction spreading out from the light sources (11) to a direction closer to the optical axes.

Abstract translation: 照明装置（10）具有：光源（11）; 包括光入射区域（Is）的导光构件（12（13））和发射平面光的光出射区域（Os）; 形成在光入射区域（Is）中并且与光源（11）相对的光入口部分（13a）; 以及形成在光入射区域（Is）的前侧的光入射部（13a）之间的区域中的亮线抑制部（20），其包括具有形状的亮线抑制棱镜（21） 将从光源（11）扩展的方向发射的光的角度改变为更靠近光轴的方向。

公开(公告)号：US20150131317A1

公开(公告)日：2015-05-14

申请号：US14402879

申请日：2013-05-24

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo Yuki ,  Takeshi Ishida

IPC: F21V8/00

CPC classification number: G02B6/002 ,  G02B6/0036 ,  G02B6/0055 ,  G02B6/0068 ,  G02B6/0073

Abstract: The present invention aims at providing an illumination device and a display device that can suppress uneven brightness while improving light use efficiency and brightness. The illumination device includes a plurality of light sources arranged next to each other, a light guide member that guides light from the light sources, and protrusions that protrude towards the respective light sources from an end face of the light guide member. The protrusions each have side faces formed such that light emitted so as to spread in the arrangement direction of the light sources exits the light guide member and then re-enters from the end face thereof.

Abstract translation: 本发明旨在提供一种能够在提高光的使用效率和亮度的同时抑制不均匀亮度的照明装置和显示装置。 照明装置包括彼此相邻布置的多个光源，引导来自光源的光的导光构件和从导光构件的端面朝向各个光源突出的突起。 这些突起各自具有形成为使得沿着光源的排列方向扩散的光从导光部件射出，然后从其端面重新进入的侧面。