公开(公告)号：US11054695B2

公开(公告)日：2021-07-06

申请号：US16507627

申请日：2019-07-10

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Taimi Oketani ,  Atsushi Ban ,  Yasuhisa Itoh ,  Takeshi Ishida

IPC: G02F1/13357 ,  H01L25/075 ,  H01L33/62 ,  H01L33/00 ,  H01L33/50 ,  G02F1/1335

Abstract: A chip-mounted board including: micro light-emitting chips arranged in a matrix pattern in a light-emitting region; and a conductive line electrically connected to the micro light-emitting chips, the light-emitting region including a first region having a first luminance, a second region having a second luminance lower than the first luminance, and a third region having a third luminance lower than the first luminance and higher than the second luminance, the luminances being values determined with the same magnitude of current supplied to the micro light-emitting chips, the third region being positioned between the first region and the second region and satisfying the following formulas (1) and (2): (1+k)/(1−k)≤63.895×tan(0.5°)×500/W+6.0525  (1) L2=k×L1  (2) wherein L1 represents the first luminance, L2 represents the second luminance, and W represents a width (unit: mm) of the third region.

公开(公告)号：US10466402B2

公开(公告)日：2019-11-05

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 ,  G02B6/00 ,  G02F1/13357 ,  G02F1/1335

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：US09933563B2

公开(公告)日：2018-04-03

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 ,  B60K37/02 ,  B60K35/00

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：US20150131309A1

公开(公告)日：2015-05-14

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.

Abstract translation: 提供能够提高照明光的亮度的均匀性的照明装置和使用其的显示装置。 照明装置设置有：沿一个方向排列成一列的多个光源; 以及导光板，其沿着侧面设有面向所述光源的受光面，引导从所述受光面入射的光，并且从设置在所述前表面的发光面输出照明光; 所述导光板具有多个棱镜和多个棱镜，所述多个棱镜设置在所述前表面或后表面上并且沿着所述光接收面的纵向方向排成一列; 所述棱镜形成跨越在所述光接收面和与所述光接收面相对的所述相对面之间; 并且在相邻棱镜之间形成的棱镜比光接收面附近的预定范围内的棱镜深。

公开(公告)号：US11963402B2

公开(公告)日：2024-04-16

申请号：US17438134

申请日：2019-03-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masayuki Kanehiro ,  Youhei Nakanishi ,  Takeshi Ishida

IPC: H10K59/122 ,  H10K50/84 ,  H10K59/131 ,  H10K59/35

CPC classification number: H10K59/122 ,  H10K50/841 ,  H10K59/131 ,  H10K59/35

Abstract: A display device includes a light-emitting element layer including a plurality of light-emitting elements. The light-emitting element layer includes, for each of the plurality of light-emitting elements, a first electrode and a plurality of openings exposing the first electrode, and includes an edge cover covering an end portion of the first electrode, a plurality of light-emitting layers covering each of the plurality of openings, and a second electrode that is common to the plurality of light-emitting elements and covers the plurality of light-emitting layers. The second electrode includes a metal nanowire. Furthermore, the light-emitting element layer includes an auxiliary wiring line provided in a lattice pattern in a position overlapping the edge cover, and the auxiliary wiring line and the metal nanowire are electrically connected to each other.

公开(公告)号：US10928578B2

公开(公告)日：2021-02-23

申请号：US16747302

申请日：2020-01-20

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Shugo Yagi ,  Takeshi Ishida ,  Yuuichi Kanbayashi ,  Satoshi Tsubooka

IPC: F21V8/00

Abstract: First and second prism sheets have pluralities of first and second unit prisms, respectively, arranged along a first direction and extending along a second direction, each of which has a base that is parallel to the first direction and a pair of oblique sides standing from both ends, respectively, of the base, and an angle that a second LED facing oblique side, which is one of the oblique sides that faces toward the LED, forms with respect to the base in the first direction in the second unit prism is smaller than an angle that a first LED facing oblique side that faces toward the LED forms with respect to the base in the first direction in the first unit prism.

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：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.

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.