公开(公告)号：US20210333469A1

公开(公告)日：2021-10-28

申请号：US17278131

申请日：2019-09-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Farid MUKHTAROV ,  Dae Sik KIM ,  Yasuhiro NISHIDA

IPC: F21V8/00

Abstract: Provided is a display apparatus including a display panel, a light guide plate arranged behind the display panel, a light guide member configured to guide light toward a rear surface of the light guide plate, the light guide member formed of a transparent material and arranged to have a front surface come in contact with the rear surface of the light guide plate, and a light source configured to supply light to the light guide member, wherein the light guide member includes a light guide portion having a width and a length longer than the width and configured to guide widthwise movement of light supplied from the light source and an exit portion protruding forward from the light guide portion to guide the light to be emitted toward the rear surface of the light guide member.

公开(公告)号：US20230126774A1

公开(公告)日：2023-04-27

申请号：US17895538

申请日：2022-08-25

Applicant: SAMSUNG ELECTRONICS CO, LTD.

Inventor： Daesik KIM ,  Kyonghyong KIM ,  Doyoung KWAK ,  Jeongtaek KIM ,  Jongil KIM ,  Yasuhiro NISHIDA ,  Inyoul SEO ,  Byunghun WOO

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A display apparatus includes a liquid crystal panel, and a backlight unit configured to emit light to the liquid crystal panel. The backlight unit includes a substrate, a light emitting diode (LED) provided on the substrate and configured to emit light, and a refractive cover formed by being provided at a plurality of points separated from each other, and configured to enclose the LED.

公开(公告)号：US20230053454A1

公开(公告)日：2023-02-23

申请号：US17979926

申请日：2022-11-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yasuhiro NISHIDA ,  Farid MUKHTAROV ,  Daesik KIM

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A backlight unit comprising a printed circuit board; a plurality of light sources at a surface of the printed circuit board, the plurality of light sources to emit light; and a reflective sheet, arranged above the plurality of light sources, having differing transmittance on the basis of incident angle of the light from the plurality of light sources, respectively, wherein the reflective sheet is provided with at least one gap between two adjacent light sources from among the plurality of light sources.

公开(公告)号：US20220206337A1

公开(公告)日：2022-06-30

申请号：US17697610

申请日：2022-03-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daesik KIM ,  Yasuhiro NISHIDA ,  Farid MUKHTAROV

IPC: G02F1/13357

Abstract: Provided is a backlight unit, a display apparatus, and a method of manufacturing the display apparatus capable of securing a uniform and wide illumination area with a small number of light sources through reflection of a reflective layer. The backlight unit includes a plurality of light sources configured to emit light; a first reflective layer configured to reflect the light emitted from the plurality of light sources; and a second reflective layer configured to reflect the light reflected from the first reflective layer, wherein an amount of reflection from the first reflective layer and an amount of transmission through the first reflective layer are different from each other according to an angle of incidence of light incident on the first reflective layer.

公开(公告)号：US20240069382A1

公开(公告)日：2024-02-29

申请号：US18388058

申请日：2023-11-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daesik KIM ,  Kyonaghyong KIM ,  Yasuhiro NISHIDA ,  Jongil KIM

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133607 ,  G02F1/133603 ,  G02F1/133611 ,  G02F1/133605

Abstract: A display device includes a backlight unit including: a substrate; a Light Emitting Diode (LED) disposed on a surface of the substrate; and a refractive cover configured to surround the LED. The refractive cover includes: a first refractive surface to: be spaced apart from the LED by a preset distance, be positioned on the upper surface of the substrate, be parallel to an axis of the LED or be inclined within one angle from the axis of the LED; a second refractive surface to be a curved surface in which an angle between a tangent line and the axis of the LED increases from a region connected to another upper portion of the first refractive surface toward a direction of the axis of the LED; and a third refractive surface to be connected to an portion of the second refractive surface and be perpendicular to the axis of the LED.

公开(公告)号：US20240027828A1

公开(公告)日：2024-01-25

申请号：US18199654

申请日：2023-05-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daesik KIM ,  Kyonghyong KIM ,  Jongil KIM ,  Yasuhiro NISHIDA

IPC: G02F1/13357 ,  G02F1/1335

CPC classification number: G02F1/133603 ,  G02F1/133605 ,  G02F1/133607

Abstract: The present disclosure provides display apparatuses including a backlight unit (BLU). In some embodiments, the display apparatus includes a liquid crystal panel, and a BLU configured to provide light to the liquid crystal panel. The BLU includes a substrate, a plurality of light-emitting diodes (LEDs) on the substrate and configured to emit the light, a plurality of refractive covers, and a plurality of reflectors on the substrate disposed between the plurality of LEDs and configured to reflect the light emitted from the plurality of LEDs. Each refractive cover is disposed on a corresponding LED of the plurality of LEDs.

公开(公告)号：US20210026201A1

公开(公告)日：2021-01-28

申请号：US16906117

申请日：2020-06-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daesik KIM ,  Farid MUKHTAROV ,  Yasuhiro NISHIDA

IPC: G02F1/13357

Abstract: A display apparatus includes a liquid crystal panel; a light source module configured to provide light to the liquid crystal panel; a printed circuit board (PCB) on which the light source module is mounted; and at least one chassis accommodating the liquid crystal panel and the PCB. The light source module includes: a substrate; a reflector positioned on the substrate, and including a curved surface having a shape resulting from rotating a portion of a parabola around a directrix of the parabola, the directrix perpendicular to the substrate; and a plurality of light sources mounted on the substrate along focal points of the parabola of the reflector.

公开(公告)号：US20230314874A1

公开(公告)日：2023-10-05

申请号：US18103933

申请日：2023-01-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daesik KIM ,  Yasuhiro NISHIDA ,  Kyonghyong KIM ,  Jongil KIM

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133607 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133608 ,  G02F1/133614 ,  G02F2202/36 ,  G02F1/133617

Abstract: A display apparatus includes: a liquid crystal panel; and a backlight unit configured to provide light to the liquid crystal panel, wherein the backlight unit includes: a substrate; a light emitting diode provided on the substrate; a quantum dot cover covering the light emitting diode and configured to convert a wavelength of light emitted from the light emitting diode; a refractive cover covering the quantum dot cover, wherein a surface of the refractive cover has a recessed portion that is recessed toward the quantum dot cover and a reflector provided in the recessed portion to be positioned above the quantum dot cover, and wherein a diameter of a lower surface of the reflector is smaller than a diameter of an upper surface of the reflector.

公开(公告)号：US20210389628A1

公开(公告)日：2021-12-16

申请号：US17282282

申请日：2019-05-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yasuhiro NISHIDA ,  Mukhtarov FARID ,  Dae Sik KIM

IPC: G02F1/13357

Abstract: The disclosure relates a direct type backlight unit, and provides a backlight unit capable of reducing the thickness by maintaining necessary and sufficient optical characteristics and reducing the optical distance (OD), and a liquid crystal display apparatus including the same. Provided is a backlight unit including: light source; a diffusion plate provided to diffuse light emitted from the light source; and an optical sheet disposed between the light source and the diffusion plate and having a plurality of protrusions having a pyramidal shape and the plurality of protrusions protrude toward the light source so that light emitted from the light source is incident onto the plurality of protrusions.

公开(公告)号：US20210234073A1

公开(公告)日：2021-07-29

申请号：US17056336

申请日：2019-05-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Sik KIM ,  Sung Yeol KIM ,  Yasuhiro NISHIDA ,  Jong Hoon JUNG

IPC: H01L33/50 ,  G02F1/1335

Abstract: According to an aspect disclosed, there is provided a display apparatus and a manufacturing method capable of maintaining color conversion efficiency and simultaneously expanding a color gamut by emitting light of two wavelengths to one light source. A display apparatus includes a light source configured to emit signal light having a first peak center wavelength and excitation light having a second peak center wavelength shorter than the first peak center wavelength; and a converter configured to convert color of the excitation light emitted by the light source. The light source may be configured to include at least one single chip in which a first semiconductor layer emitting the excitation light and a second semiconductor layer emitting the signal light are arranged in a horizontal or vertical direction.