公开(公告)号：US10209432B2

公开(公告)日：2019-02-19

申请号：US15550798

申请日：2016-02-05

Applicant: Sharp Kabushiki Kaisha

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

IPC: F21V8/00

Abstract: A backlight device (12) includes a light guide plate (14), and LEDs (17), and wiring portions (18c). The light guide plate (14) has a substantially circular outer shape and has fan-shaped areas (SA) defined by segment lines (SL) extending through a center (C) thereof. All the segment lines (SL) meet at the center (C). The LEDs (17) are arranged such that middle positions between LEDs (17) each located at an end in the circumferential direction in the respective sets of the LEDs (17) provided for the fan-shaped areas (SA) adjacent to each other in the circumferential direction coincides with the segment lines (SL). The wiring portions (18c) are equal or larger in number than the LEDs (17) included in each of the sets of LEDs (17) provided for the fan-shaped areas (SA) and are configured to supply electric power to the respective LEDs (17).

公开(公告)号：US10180527B2

公开(公告)日：2019-01-15

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: G02B6/00 ,  F21V8/00 ,  G02F1/1333

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.

公开(公告)号：US10018868B2

公开(公告)日：2018-07-10

申请号：US15539831

申请日：2015-12-18

Applicant: Sharp Kabushiki Kaisha

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

IPC: G02F1/1335 ,  F21V5/02 ,  F21V5/04 ,  G02F1/1333

CPC classification number: G02F1/1335 ,  F21V5/02 ,  F21V5/048 ,  G02F1/133308 ,  G02F1/133615 ,  G02F2001/133317 ,  G02F2001/133337 ,  G02F2001/133388 ,  G02F2201/56

Abstract: A backlight device includes: optical members with a substantially circular profile, including a light guide plate, optical sheets, and a reflective sheet; a chassis (lamination member) disposed to overlap the light guide plate, the optical sheets, and the reflective sheet (optical members); and positioning structures. The positioning structures are provided on the light guide plate, the optical sheets, and the reflective sheet (optical members) and on the chassis (lamination member). The positioning structures have contact faces that come into contact with each other in the circumferential direction of the light guide plate, the optical sheets, and the reflective sheet (optical members), so as to position the light guide plate, the optical sheets, and the reflective sheet (optical member) relative to the chassis (lamination member) in the circumferential direction.

公开(公告)号：US09690034B2

公开(公告)日：2017-06-27

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: F21V7/04 ,  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.

公开(公告)号：US20150286086A1

公开(公告)日：2015-10-08

申请号：US14435223

申请日：2013-09-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Ryuzo Yuki ,  Takeshi Ishida ,  Hisashi Watanabe

IPC: G02F1/1333 ,  G02F1/1335

CPC classification number: G02F1/133308 ,  G02F1/133608 ,  G02F2001/133314 ,  G02F2001/133322 ,  G02F2001/133331

Abstract: A display device includes a display panel, a backlight that illuminates the display panel from a back surface thereof, a chassis having a recess with an opened front surface, and a transparent member that covers the recess. The display panel and the backlight are fitted into the recess and positioned within a plane parallel to a display surface of the display panel, and the display panel and the backlight are positioned in a direction perpendicular to the display surface by a bottom surface of the recess and the transparent member.

Abstract translation: 显示装置包括显示面板，从背面照亮显示面板的背光源，具有开口前表面的凹部的底架和覆盖凹部的透明构件。 显示面板和背光装配到凹部中并且位于与显示面板的显示面平行的平面内，并且显示面板和背光源通过凹部的底面在与显示面垂直的方向上定位 和透明构件。

公开(公告)号：US12101963B2

公开(公告)日：2024-09-24

申请号：US17433506

申请日：2019-03-01

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Ryuzo Yuki ,  Kiyoshi Minoura ,  Kohzoh Nakamura ,  Akira Sakai

IPC: H10K50/86 ,  G02B5/30 ,  H10K50/80 ,  H10K50/818 ,  H10K50/84 ,  H10K59/12 ,  H10K59/40 ,  H10K50/842 ,  H10K50/844 ,  H10K59/121 ,  H10K59/122 ,  H10K59/124

CPC classification number: H10K50/868 ,  G02B5/3083 ,  H10K50/818 ,  H10K50/841 ,  H10K59/12 ,  H10K59/40 ,  H10K50/8426 ,  H10K50/844 ,  H10K59/1216 ,  H10K59/122 ,  H10K59/124

Abstract: A display device includes an active matrix substrate including a transistor element and a light-emitting element layer provided on the active matrix substrate and including a first electrode, a second electrode, a function layer including a light-emitting layer between the first electrode and the second electrode, and a sealing layer. The display device includes: a half mirror provided on a display surface side of the light-emitting element layer; and a first λ/4 plate, a reflective polarizer, and an absorbing polarizer which are provided in order from the light-emitting element layer side between the light-emitting element layer and the half mirror.

公开(公告)号：US10353132B2

公开(公告)日：2019-07-16

申请号：US15539348

申请日：2015-12-18

Applicant: Sharp Kabushiki Kaisha

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

IPC: F21V8/00 ,  G09F9/00 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1345 ,  G02F1/1368

Abstract: A liquid crystal display device includes a liquid crystal panel, a liquid crystal panel flexible circuit board, and a backlight unit. The backlight unit includes LEDs, a light guide plate, a chassis, and an LED board. The light guide plate has an outer shape conforming to an outer shape of the liquid crystal panel. The chassis including a sidewall portion which surrounds the light guide plate and the LEDs. The LED board has an outer shape conforming to the outer shape of the light guide plate. The LEDs are mounted on the LED board at intervals in the circumferential direction. The LED board includes LED mount portions, and LED interval portions. The LED interval portions include a cut-out LED interval portion. Between the cut-out LED interval portion and the sidewall portion, a liquid crystal panel flexible circuit board passing space is provided.

公开(公告)号：US10281766B2

公开(公告)日：2019-05-07

申请号：US15539322

申请日：2015-12-18

Applicant: Sharp Kabushiki Kaisha

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

IPC: G02F1/1335 ,  F21V8/00 ,  F21V23/00 ,  F21V23/04 ,  H05K1/02 ,  G04G9/00 ,  G04G17/04 ,  H05K1/18 ,  F21Y103/33

Abstract: A backlight device 12 includes at least: a plurality of LEDs 17 arranged in an annular and curved shape; a light guide plate 14 surrounded by the plurality of LEDs 17 having am outer shape along the arrangement of the plurality of LEDs 17, and guiding light from the plurality of LEDs 17; and an LED board (light source board) 18 on which the plurality of LEDs 17 are mounted and wiring portions 18c for feeding power to the plurality of LEDs 17 are formed. The LED board 18 extends along the arrangement of the plurality of LEDs 17, and has a terminated annular shape or an endless annular shape, and includes a no-wiring formed region NWA in a part with respect to the circumferential direction thereof, where the wiring portions 18c are not formed.

公开(公告)号：US10203442B2

公开(公告)日：2019-02-12

申请号：US15770739

申请日：2016-10-21

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Hisashi Watanabe ,  Hirotoshi Yasunaga ,  Ryuzo Yuki ,  Mitsuhiro Murata

IPC: F21S2/00 ,  F21K9/20 ,  F21V8/00

Abstract: A backlight unit includes side emitting-type LEDs, a light guide plate, and an LED board. The light guide plate includes a light entering end surface, a light exiting plate surface, and an opposite plate surface. The LED board includes a plate surface attached to an edge of the opposite plate surface. A gap in a range from 0.1 mm to 0.2 mm is provided between light emitting surfaces of the LEDs and the light entering end surface. The edge of each light emitting surface is at a position ΔD1 mm inner than an edge of the light entering end surface with respect to a thickness direction of the light guide plate. An edge of each light emitting surface is at a position ΔD2 mm inner than an edge of the light entering end surface. ΔD1 and ΔD2 satisfy relational expressions: ΔD2≥ΔD1 and ΔD2≥0.1.

公开(公告)号：US10061156B2

公开(公告)日：2018-08-28

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 ,  G02F1/1345 ,  G02F1/1362 ,  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.