公开(公告)号：US20170359867A1

公开(公告)日：2017-12-14

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

CPC classification number: H05B33/086 ,  F21V19/00 ,  F21V23/04 ,  G02F1/133604 ,  G02F1/133615 ,  G02F2201/56

Abstract: A lighting device 10 includes light sources 17, a light source board 18, and a casing 13. The light source board 18 includes a board body portion 18a having a substantially circular outer edge where the light sources 17 are arranged at intervals in a substantially annular shape such that each light source 17 emits light toward a center, an extended portion 18b extending inward from the board body portion 18a, and a trace portion 19 electrically connected to each light source 17 and disposed in an area from the board body portion 18a to the extended portion 18b such that an end of the trace portion 19 is arranged at a distal end of the extended portion 18b. The casing 13 includes a tubular-shaped side wall portion 13b surrounding the light sources 17, and a bottom portion 13a disposed opposite the board body portion 18a and having an exit hole 13a1 therethrough through which the extended portion 18b is inserted and the distal end 18b1 of the extended portion 18b is extended outside.

公开(公告)号：US20170205558A1

公开(公告)日：2017-07-20

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: F21V8/00

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：US20190094448A1

公开(公告)日：2019-03-28

申请号：US16082587

申请日：2017-03-10

Applicant: Sharp Kabushiki Kaisha

Inventor： Hisashi WATANABE ,  Hirotoshi YASUNAGA ,  Youzou KYOUKANE ,  Takeshi ISHIDA

IPC: 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：US20170038515A1

公开(公告)日：2017-02-09

申请号：US15124722

申请日：2015-02-19

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo YUKI ,  Takeshi ISHIDA ,  Takao IMAOKU ,  Yoshinobu HIRAYAMA ,  Shugo YAGI

IPC: F21V8/00

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

Abstract: A backlight unit includes a light emission reflecting portion, first reflecting protrusions, and second reflecting protrusions. The light emission reflecting portion includes unit reflecting portions that include main reflecting surfaces and light reentering surfaces arranged opposite to the main reflecting surfaces, respectively. The first reflecting protrusions include extended main reflecting surfaces that continue to the main reflecting surfaces, respectively, and first auxiliary reflecting surfaces that reflect rays of light traveling toward an opposite plate surface and direct the rays of light toward the main reflecting surfaces and the extended main reflecting surfaces. The second reflecting protrusions include extended light reentering surfaces that continue to the light reentering surfaces, respectively, and second auxiliary reflecting surfaces that reflect rays of light entering through at least one of the light reentering surfaces and the extended light reentering surfaces and direct the rays of light toward the light exiting surface.

Abstract translation: 背光单元包括发光反射部，第一反射突起和第二反射突起。 发光反射部分包括分别包括主反射表面和与主反射表面相对布置的光再入入表面的单元反射部分。 第一反射突起包括分别延伸到主反射表面的延伸的主反射表面和反射朝向相对板表面的光线的第一辅助反射表面，并将光线引向主反射表面和延伸主体 反射面。 第二反射突起包括分别延续到光再入入表面的延伸的光再入入表面和反射入射通过至少一个光再入入表面和延伸的光再入入表面的光线的第二辅助反射表面， 朝向光出射表面的光。

公开(公告)号：US20170363793A1

公开(公告)日：2017-12-21

申请号：US15188144

申请日：2016-06-21

Applicant: Sharp Kabushiki Kaisha

Inventor： David James MONTGOMERY ,  Takeshi ISHIDA ,  Hisashi WATANABE

IPC: 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：US20170269285A1

公开(公告)日：2017-09-21

申请号：US15327761

申请日：2015-07-22

Applicant: Sharp Kabushiki Kaisha

Inventor： Yoshinobu HIRAYAMA ,  Takao IMAOKU ,  Takeshi ISHIDA ,  Ryuzo YUKI ,  Shugo YAGI

IPC: F21V8/00

CPC classification number: G02B6/0061 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0053 ,  G02B6/0055

Abstract: A backlight device includes: LEDs; a light guide plate that has a light-receiving face, a light-exiting surface, and an opposite surface; a reflective sheet disposed so as to face the opposite surface of the light guide plate; and an exiting-light reflecting part that facilitates the emission of light from the light-exiting surface by reflecting light that propagates within the light guide plate, and that is disposed on the light-exiting surface side of the light guide plate. The exiting-light reflecting part is formed of a reflective unit disposed in plurality with gaps therebetween along a first direction, which is along a pair of end faces that are among the peripheral end faces of the light guide plate, are on opposite sides of the light guide plate, and do not include the light-receiving face. The reflective unit extends along a second direction, which is along a pair of end faces that are among the peripheral end faces of the light guide plate and that include the light-receiving face.

公开(公告)号：US20170261810A1

公开(公告)日：2017-09-14

申请号：US15510243

申请日：2015-08-31

Applicant: Sharp Kabushiki Kaisha

Inventor： Mitsuhiro MURATA ,  Takeshi ISHIDA ,  Ryuzo YUKI ,  Hirotoshi YASUNAGA

IPC: G02F1/1335 ,  G02F1/1362 ,  G02F1/1345 ,  G02F1/1368

CPC classification number: G02F1/133553 ,  G02F1/133514 ,  G02F1/13454 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2201/40 ,  G02F2201/52

Abstract: Provided is a technique for controlling the hue of an image when the image is displayed on a display panel so that the image should not be displayed with a hue different from the actual hue. The display device includes a display panel that includes an active matrix substrate 11a and a counter substrate 11b, and a reflection unit 12. The active matrix substrate 11a includes gate lines and source lines 24, and includes a plurality of pixel areas that are defined by the gate lines and the source lines 24. The counter substrate 11b includes color filters 31R, 31G, 31B of R, G, B at positions corresponding to the pixel areas. The reflection unit 12 transmits light from the light source 14, and reflects light from the active matrix substrate 11a. The pixel areas of R, G, B have reflection areas that reflect light from the reflection unit 12 so that the respective amounts of light outgoing from the above-described pixel areas are approximately uniform.

公开(公告)号：US20170082789A1

公开(公告)日：2017-03-23

申请号：US15312312

申请日：2015-05-15

Applicant: Sharp Kabushiki Kaisha

Inventor： Hirotoshi YASUNAGA ,  Takeshi ISHIDA ,  Mitsuhiro MURATA ,  Ryuzo YUKI

IPC: F21V8/00

Abstract: An illumination device according to the present invention includes: a light source row in which a plurality of light sources are aligned in a row; a light guide plate that includes a plate-shaped main body with an end thereof facing the light source row, a light-receiving portion that is arranged on the end of the main body and into which light from the light sources enters, plate-shaped side extensions that are arranged on the sides of the main body and that extend outwards further than the light-receiving portion, and a light-exiting portion that is arranged on front surfaces of the main body and the side extensions and that allows light that enters via the light-receiving portion to exit; and a supply unit that supplies light to the side extensions.

公开(公告)号：US20170090113A1

公开(公告)日：2017-03-30

申请号：US15311854

申请日：2015-05-15

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo YUKI ,  Takeshi ISHIDA ,  Mitsuhiro MURATA ,  Hirotoshi YASUNAGA

IPC: F21V8/00 ,  G02F1/1339

CPC classification number: G02B6/0088 ,  B60K35/00 ,  B60K37/02 ,  B60K2350/1056 ,  B60K2350/2039 ,  G02B6/0021 ,  G02F1/133308 ,  G02F1/1339 ,  G02F2001/133322 ,  G02F2201/56

Abstract: A backlight unite 12 includes LEDs 17, an optical member 16, a positioning portion 23, and a rotation restricting portion 24. The optical member 16 includes at least a curved end surface 16C having a curved shape in a plan view included in a periphery of the optical member 16. The positioning portion 26 includes a positioning hole 25 that opens through a thickness direction of the optical member 16 and a positioning protrusion 26 that is inserted in the positioning hole 25 and is in contact with an inner wall of the positioning hole 25. The rotation restricting portion 24 includes an optical member recess 27 that is a portion of the periphery of the optical member 16 recessed along a circumferential direction and a contact portion 28 that is in contact with the optical member recess 27.

公开(公告)号：US20170059771A1

公开(公告)日：2017-03-02

申请号：US15306800

申请日：2015-05-15

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Ryuzo YUKI ,  Takeshi ISHIDA ,  Mitsuhiro MURATA ,  Hirotoshi YASUNAGA

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

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.

Abstract translation: 背光装置12包括LED 17，光学构件16，其对来自LED 17的光提供光学效果，并且具有穿过其厚度的通孔23;以及限制构件26，具有连通孔27， 通孔23.限制构件26插入通孔23中以与通孔23的内表面接触，以限制光学构件16沿着光学构件16的板表面的移动。