公开(公告)号：US20190086604A1

公开(公告)日：2019-03-21

申请号：US16088461

申请日：2017-03-22

Applicant: Sharp Kabushiki Kaisha

Inventor： Hirotoshi YASUNAGA ,  Hisashi WATANABE ,  Youzou KYOUKANE

IPC: F21V8/00

CPC classification number: G02B6/0061 ,  G02B6/00 ,  G02B6/0038 ,  G02B6/0055 ,  G02B6/0088 ,  G02F1/133524 ,  G02F1/133615

Abstract: A backlight unit includes an LED, a light guide plate, a light collecting portion, an opposite end portion, and a total reflection regulator. The light guide plate includes a light entering end surface opposed to the LED and a light exiting surface that is one of plate surfaces. The light collecting portion includes light collecting pieces extending on the light exiting surface in a normal direction to the light entering end surface and arrayed in an orthogonal direction perpendicular to the normal direction. The opposite end portion is on an opposite side from the light entering end surface. A section of the opposite end portion includes a curved end surface. The total reflection regulator is disposed on at least a portion of the curved end surface and configured to regulate the amount of light in the opposite end portion to be totally reflected by the curved end surface.

公开(公告)号：US20180173058A1

公开(公告)日：2018-06-21

申请号：US15736858

申请日：2016-06-10

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo YUKI ,  Mitsuhiro MURATA ,  Hisashi WATANABE ,  Hirotoshi YASUNAGA

IPC: G02F1/1335 ,  F21V8/00 ,  G02B6/42

CPC classification number: G02F1/133603 ,  G02B6/0023 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0073 ,  G02B6/0088 ,  G02B6/0091 ,  G02B6/426 ,  G02F1/133308 ,  G02F1/133606 ,  G02F1/133615 ,  G02F2001/133337 ,  G02F2001/133607

Abstract: A backlight device includes LEDs, a light guide plate, a LED board, and a bonding member. The light guide plate has a light entrance edge surface that is a part of peripheral edge surfaces thereof and through which light from the LED enters, a light exiting plate surface that is one of plate surfaces thereof and through which light exits, and another one of the plate surfaces as an opposite plate surface. The LED board has a mounting surface on which the LEDs are mounted, and has a part overlapping a part of the light guide plate on an opposite plate surface side. The bonding member is bonded to the mounting surface of the part of the LED board and to the opposite plate surface of the part of the light guide plate and the bonding member includes a light absorbing bonding layer containing light absorbing material.

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：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：US20190072822A1

公开(公告)日：2019-03-07

申请号：US15765495

申请日：2016-09-28

Applicant: Sharp Kabushiki Kaisha

Inventor： Hirotoshi YASUNAGA ,  Mitsuhiro MURATA ,  Hisashi WATANABE ,  Ryuzo YUKI

IPC: G02F1/1335

Abstract: A lighting device includes LEDs, a light guide plate, and a frame. The light guide plate includes a light guide plate hole portion passing through in a thickness direction, a light entering surface, and a light exiting surface. The frame surrounds the light guide plate. The frame includes an outer peripheral wall portion and an inner peripheral wall portion. The outer peripheral wall portion opposes an outer peripheral end face of the light guide plate. The inner peripheral wall portion inserted to the light guide plate hole portion opposes an inner peripheral end face of the light guide plate on an inner side of the light guide plate hole portion. The inner peripheral wall portion has a configuration in which the opposing surface has a lower light reflectivity than that of an opposing surface of the outer peripheral wall portion.

公开(公告)号：US20200326470A1

公开(公告)日：2020-10-15

申请号：US16305418

申请日：2017-08-07

Applicant: Sharp Kabushiki Kaisha

Inventor： Youzou KYOUKANE ,  Hisashi WATANABE ,  Hirotoshi YASUNAGA ,  Ryuzo YUKI

IPC: F21V8/00 ,  H05K1/02

Abstract: The light input efficiency of a light-emitting device into a circular disc-shaped or elliptical disc-shaped light guide plate is increased. A light-emitting device includes a first light-emitting unit (12a) that includes a plurality of light-emitting elements (L1 to L5) arranged curvilinearly, a second light-emitting unit (12b) that includes a plurality of light-emitting elements (L6 to L10) arranged curvilinearly, and a coupling portion (12c) that is disposed so as to coincide with a region (SA) sandwiched by the first and second light-emitting units and couples the first and second light-emitting units.

公开(公告)号：US20180239078A1

公开(公告)日：2018-08-23

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: F21V8/00

CPC classification number: G02B6/0068 ,  G02B6/0045 ,  G02B6/0083 ,  G02B6/0091

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：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。