Having Solid-state Light Source Patents (Class 362/97.3)
  • Patent number: 11513278
    Abstract: A lighting device includes a plurality of first lighting units emitting a first output light. Each of the first lighting units includes a first light source, a first reflective layer, and a first light converting structure. The first light source is configured to provide the first output light. The first reflective layer is configured to reflect the first output light. The first light converting structure is configured to convert the first output light. The first output light has a sub peak between 400 nm and 500 nm and a main peak between 590 nm and 780 nm, and a normal intensity of the sub peak is greater than a tilt intensity of the sub peak. The normal intensity is measured along a normal direction, the tilt intensity is measured along a tilt direction, and the normal direction is different from the tilt direction.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: November 29, 2022
    Assignee: InnoLux Corporation
    Inventors: Hsiao-Lang Lin, Tsung-Han Tsai
  • Patent number: 11513390
    Abstract: A display device including a lower cover; a circuit substrate on the lower cover; a plurality of light sources disposed on the circuit substrate; a reflection layer disposed on the lower cover; a light regulating pattern disposed close to an edge of the reflection layer; and an optical sheet disposed on the light sources. Further, a width of the light regulating pattern changes along the edge of the reflection layer.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: November 29, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Yongjin Kim, Munheon Hong, Chilkeun Park, Sangcheon Kim, Mangeun Kim
  • Patent number: 11506827
    Abstract: The backlight module includes the following units. Multiple first light emitting units are disposed on a top surface of a transparent substrate. A beam angle of the first light emitting units is greater than or equal to 30 degrees and less than or equal to 45 degrees. Multiple second light emitting units and a light guide plate are disposed on a bottom surface of the transparent substrate. Each second light emitting unit is disposed in a respective hole of the light guide plate. A light intensity of the first light emitting units in a first mode is smaller than that in a second mode. A light intensity of the second light emitting units in the first mode is greater than that in the second mode. In this way, the purpose of privacy protection can be achieved.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: November 22, 2022
    Assignee: HannStar Display Corporation
    Inventors: Chen-Hao Su, Chia-Feng Teng, Chin-Yung Liu
  • Patent number: 11508699
    Abstract: A display panel and a pixel structure are provided. The pixel structure includes a substrate, a micro light emitting diode (micro LED or ?LED), a sidewall structure, a filling layer, and a reflective layer. The substrate has a bearing surface, and the micro LED is disposed on the bearing surface directly or indirectly. The sidewall structure is disposed on the bearing surface and defines at least one accommodation cavity to accommodate the micro LED. The filling layer is filled in the accommodation cavity and surrounds the micro LED. The reflective layer covers a top surface of the filling layer and has a plurality of light-transmissible windows. The micro LED forms, in a vertical projection direction, a vertical projection region in an overlapping region on the reflective layer. Among the light-transmissible windows, those having longer distances to the vertical projection region have larger areas.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: November 22, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Pin-Miao Liu, Chen-Chang Chen, Wen-Wei Yang
  • Patent number: 11480725
    Abstract: A planar light source includes: a light guide plate including: a first principal face, a second principal face located opposite the first principal face, and a plurality of through holes that are open at the first principal face and the second principal face; a plurality of light sources, wherein at least one of the light sources is located in the through holes of the light guide plate; a wiring substrate on which the plurality of light sources are located; a first light transmissive member located in a first of the through holes so as to cover at least a portion of a lateral face of the at least one light source located in the first through hole; and a second light transmissive member located in the first through hole so as to cover at least an upper face of the first light transmissive member.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: October 25, 2022
    Assignee: NICHIA CORPORATION
    Inventor: Daisuke Kasai
  • Patent number: 11476397
    Abstract: A display device according to an exemplary embodiment of the present disclosure comprises an insulation layer on a substrate and having a groove concave in a direction toward the substrate; a first reflective layer on at least a portion of the insulation layer; and a display element layer on the insulation layer and the first reflective layer, the display element layer including a light emitting element overlapping at least a portion of the groove.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: October 18, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eui Suk Jung, Tae Gyun Kim, Jun Hong Park, Jun Chun, Hyun Young Jung
  • Patent number: 11414596
    Abstract: Provided is a fluoride fluorescent material having high luminance. The fluoride fluorescent material has a composition containing Mn, A that is at least one element or ion selected from the group consisting of alkali metal elements and NH4+, at least one element M selected from the group consisting of Group-4 elements and Group-14 elements, and F; and contains spherical fluoride particles.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: August 16, 2022
    Assignee: NICHIA CORPORATION
    Inventor: Tomokazu Yoshida
  • Patent number: 11360350
    Abstract: When at least one scope of 0.5 mm square or more of a surface of an optical sheet having the unevenness is measured, height data of each of a plurality of pixels of an image obtained is determined, an approximated surface is calculated, from the height data of each pixel, for a minute region of 100 ?m2 or less, and a calculation is repeatedly performed to obtain an inclination angle between: (i) a flat surface appearing after the unevenness is imaginarily removed and: (ii) the approximated surface, while two-dimensionally shifting the minute region at equal intervals along the flat surface by using at least one of the pixels as a unit to obtain a plurality of minute regions, a total area of some of the minute regions each having the inclination angle of 30° or more, accounts for 30% or more of a total area of all the minute regions.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: June 14, 2022
    Assignee: KEIWA INC.
    Inventors: Chengheng Tsai, Motohiko Okabe, Takahiro Tsuji, Masayuki Sukigara
  • Patent number: 11362135
    Abstract: A light emitting element array includes a single semiconductor substrate, a plurality of semiconductor elements, which are formed on the single semiconductor substrate, and each of the semiconductor elements including a first distributed Bragg-reflector, an active layer formed over the first distributed Bragg-reflector, and a second distributed Bragg-reflector formed over the active layer. The array includes an electrode pad formed over the second distributed Bragg-reflector and a wiring formed at least partly over the second distributed Bragg-reflector and extending from the electrode pad toward the semiconductor elements. The semiconductor elements include a first semiconductor element, configured to emit laser light, and a second semiconductor element configured not to emit laser light and disposed at a position which is shorter distance along the wiring from the electrode pad than a distance along the wiring from the electrode pad to a position of the first semiconductor element.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: June 14, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Junichiro Hayakawa, Akemi Murakami, Hideo Nakayama, Tsutomu Otsuka
  • Patent number: 11333926
    Abstract: The disclosure relates to the technical field of liquid crystal display, and discloses a backlight module and a display device. The backlight module includes a light guide plate and a plurality of light emitting diodes arranged in a first direction, where the light guide plate is provided with a first region and a second region along a second direction, and the first direction and the second direction intersect with each other; and dots of the first region include a plurality of isolated cluster structures, and a dot density between any two adjacent cluster structures is lower than a dot density of each of the cluster structures.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: May 17, 2022
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yaodong Wang, Qin Xin, Yangli Zheng, Xiaoping Zhang, Jian Ren, Luo Zhang, Siqi Yin, Fangyi Liu, Litao Fan, Zhenguo Zhou
  • Patent number: 11231153
    Abstract: A light fixture includes a housing that defines a housing chamber having a housing opening. The light fixture is configured to emit light through the housing opening. The light fixture also includes a waveguide supported within the housing chamber and over the housing opening. The light fixture may include a backing plate supported within the housing chamber and biasing the waveguide towards the housing opening. The light fixture may include a transition cover with a cover body extending from a first portion of the waveguide to the housing opening and a light dam extending from the cover body towards a second portion of the waveguide.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: January 25, 2022
    Assignee: ABU IP Holding LLC
    Inventors: John Sakmar, Luke J. Siefker, Adam Miller, Jeff C. Carpenter
  • Patent number: 11156860
    Abstract: A display panel includes: a first substrate having a display area and a non-display area outside the display area, the display area having an imaginary corner, the first substrate having a first corner corresponding to the imaginary corner; and a second substrate including a first portion opposite a main face of the first substrate and a second portion extending out of the first substrate, the second substrate having a second corner corresponding to the imaginary corner, wherein the first corner is either chamfered or rounded.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: October 26, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Yohsuke Fujikawa
  • Patent number: 11150513
    Abstract: Provided is a reflective diffusing lens which controls light emitted from a light emitting element according to an embodiment.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: October 19, 2021
    Assignee: Molex, LLC
    Inventors: Sung Kuk Cho, Byung Woo Lee, Young Jun Cho
  • Patent number: 11112646
    Abstract: A thin backlight module and a manufacturing method of the thin backlight module are provided. The thin backlight module includes a drive substrate, multiple light emitting sources, a fluorescence layer, and multiple particle micro-structures. The light emitting sources are arranged in an array on the drive substrate. The surface micro-structures are arranged on a surface of the fluorescence layer. Each surface micro-structure is arranged corresponding to each light emitting source. Each particle micro-structure is arranged corresponding to each surface micro-structure. Each particle micro-structure and each surface micro-structure together form a guiding layer for dispersing light from a corresponding one of the light emitting sources. Thereby, a smaller light mixing distance and an ultra-thin backlight module thickness are achieved.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: September 7, 2021
    Inventor: Guowei Zha
  • Patent number: 11112555
    Abstract: A light-emitting module includes a plurality of light guide plates, each of the plurality of light guide plates including a first surface, a side surface, and a second surface opposite to the first surface, the plurality of light guide plates being separated by a gap between the side surfaces; and n light-emitting devices (n being a natural number of 2 or more) provided at the second surface side of the light guide plate for each of the plurality of light guide plates. The n light-emitting devices are disposed respectively in n regions into which the light guide plate is subdivided when viewed from the first surface side. A light-emitting device of the plurality of light guide plates disposed in a region of the n regions adjacent to the gap is shifted toward the gap from a center of the region adjacent to the gap.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: September 7, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Keiji Emura
  • Patent number: 11067742
    Abstract: The present disclosure provides a backlight module and a display device, and relates to the field of display technology. The backlight module includes: a heat sink located above a backplane for dissipating heat generated by a light source; a reflective member disposed on a side of a light guide plate adjacent to the backplane; and one or more thermal buffer members disposed between the heat sink and the reflective member, wherein a thermal conductivity coefficient of each of the thermal buffer members in a direction perpendicular to a light exiting surface of the backlight module is less than that of the heat sink.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: July 20, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yongda Ma, Yong Qiao, Xinyin Wu
  • Patent number: 11067250
    Abstract: A light emitting device includes: a base; a light emitting element; a light reflective film located on an upper surface of the light emitting element; and a encapsulant. A ratio of a maximum width (Wmax) of the encapsulant with respect to a maximum width of the light emitting element, in a side view, is 2 or more. An outer shape of a part of the encapsulant located within a range of elevation angles that is in a range of 10° to 50° from a center of a mounting region at an upper surface of the base on which the light emitting element is mounted is formed to have a curved surface. A ratio (r/Wmax) of a radius of curvature (r) of the curved surface with respect to the maximum width (Wmax) of the encapsulant, in a side view, is in a range of 0.25 to 0.50.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: July 20, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Yuichi Yamada, Motokazu Yamada
  • Patent number: 11056412
    Abstract: A semiconductor package includes an encapsulated semiconductor device, a redistribution structure, and a protection layer. The encapsulated semiconductor device includes a semiconductor device and an encapsulating material encapsulating the semiconductor device. The redistribution structure is disposed on the encapsulated semiconductor device and includes a dielectric layer and a redistribution circuit layer electrically connected to the semiconductor device. The protection layer at least covers the dielectric layer, wherein an oxygen permeability or a water vapor permeability of the protection layer is substantially lower than an oxygen permeability or a vapor permeability of the dielectric layer.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: July 6, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shih-Hao Tseng, Hung-Jui Kuo, Ming-Che Ho, Chia-Hung Liu
  • Patent number: 11021650
    Abstract: A composition including a plurality of quantum dots; a binder polymer; a thiol compound having at least two thiol groups; a polyvalent metal compound; a polymerizable monomer having a carbon-carbon double bond; a photoinitiator; and a solvent.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: June 1, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG DISPLAY CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Ha Il Kwon, Tae Gon Kim, Shang Hyeun Park, Eun Joo Jang, Shin Ae Jun, Garam Park
  • Patent number: 10988386
    Abstract: The subject matter described herein includes a method of separating a mixture of trivalent rare-earth elements, based on their reduction potential, and solubility in a divalent state. The method includes adding the mixture of trivalent rare-earth elements to a tetraborate salt with deionized water to form a salt mixture, grinding the salt mixture with boric acid to form a solid mixture, wetting the solid mixture with water to form a paste, heating the paste to form a resultant product, dissolving the resultant product, thereby creating a residual solid in aqueous solution, wherein the residual solid includes a second mixture of trivalent rare-earth elements, and the aqueous solution includes a substantially singular element of a divalent rare-earth element in an aqueous state, and removing the residual solid, thereby separating the divalent rare-earth element from the mixture of trivalent rare-earth elements.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: April 27, 2021
    Assignee: Winston-Salem State University
    Inventors: Nathan Aaron Stump, Jafar Gharavi Naeini
  • Patent number: 10985145
    Abstract: A light source module including a substrate and a plurality of light emitting units is provided. The light emitting units are disposed on a surface of the substrate and each light emitting unit includes a first light emitting device, a second light emitting device, a first reflective element, a second reflective element and a package structure. The first reflective element and the second reflective element are respectively overlapped with the first light emitting device and the second light emitting device along a direction being perpendicular to the surface of the substrate. The package structure is disposed between the first reflective element, the second reflective element, the first light emitting device and the second light emitting device. The package structure includes a main body portion and a first recess. The main body portion covers the first light emitting device and the second light emitting device.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: April 20, 2021
    Assignee: Coretronic Corporation
    Inventors: Shih-Yi Lin, Wen-Hsun Yang, Yu-An Huang
  • Patent number: 10948769
    Abstract: An image display and a backlight module thereof are provided. The image display includes a display module and the backlight module disposed under the display module. The backlight module includes a direct-type light-emitting unit and a side-type light-emitting unit. The direct-type light-emitting unit includes a first direct-type light-emitting group and a second direct-type light-emitting group. The side-type light-emitting unit includes a plurality of side-type light-emitting elements for surrounding the direct-type light-emitting unit. The first direct-type light-emitting group includes a plurality of first direct-type light-emitting elements, and the second direct-type light-emitting group includes a plurality of second direct-type light-emitting elements for surrounding the first direct-type light-emitting group.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: March 16, 2021
    Assignee: ASTI GLOBAL INC., TAIWAN
    Inventor: Chien-Shou Liao
  • Patent number: 10914464
    Abstract: The invention provides a lighting module (100) which comprises a plurality of first light sources (101) configured for emitting first light (102) in a first predetermined direction, and at least one second light source (103) configured for emitting second light (104). The lighting module (100) further comprises a light guide (105) which comprises at least one light in-coupling portion (106) to couple at least part of the second light (104) into the light guide (105), and a plurality of light out-coupling portions (107) to couple at least part of the second light (104) out of the light guide (105). The light guide (105) is arranged to guide the second light (104) coupled into the light guide (105) at the at least one light in-coupling portion (106) via total internal reflection (108) to the plurality of light out-coupling portions (107) for generating out-coupled light in a second predetermined direction.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: February 9, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Rifat Ata Mustafa Hikmet, Ties Van Bommel
  • Patent number: 10872882
    Abstract: Disclosed is an LED module assembly for a display including a first LED module and a second LED module. The first LED module includes a first unit substrate, a plurality of LED chips mounted on the first unit substrate to form a plurality of pixels, and a first light absorbing layer formed on the first unit substrate. The second LED module includes a second unit substrate, a plurality of LED chips mounted on the second unit substrate to form a plurality of pixels, and a second light absorbing layer formed on the second unit substrate. The first unit substrate and the second unit substrate are laterally connected to each other. Each of the first light absorbing layer and the second light absorbing layer includes a plurality of valleys formed between the plurality of pixels.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: December 22, 2020
    Assignee: LUMENS CO., LTD.
    Inventors: Chunki Min, Keunoh Kim, Huikyeong Noh, Kyungmin Cho
  • Patent number: 10809571
    Abstract: A lighting device includes a casing, a light source, a light-collecting member, and a reflection member. The casing includes a light exiting portion. The light source is accommodated within the casing. The light-collecting member disposed in the light exiting portion. The light-collecting member includes unit light collectors each having long dimensions in a first direction and being arranged in a second direction perpendicular to the first direction. The reflecting member is disposed adjacent to the light source with respect to the light-collecting member in the light exiting portion. The reflecting member includes a light reflective portion and a light transmissive portion. The reflecting member includes a light source arrangement area including a section overlapping the light source. The light source arrangement area includes the light reflective portion with an area ratio larger than an area ratio of a light source non-arrangement area around the light reflective portion.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: October 20, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hisashi Watanabe, Hirotoshi Yasunaga, Youzou Kyoukane
  • Patent number: 10772260
    Abstract: A grow light system for growing plants. The grow light system can have a carrier board assembly containing a plurality of apertures and a plurality of LED modules removably engaged with the carrier board in the apertures and forming a gap between LED module and the carrier board. The grow light system can be configured to draw air through the gap over the LEDs and along the heat sink fin to reduce the temperature of the LED module. A plurality of the LED modules can be connected in series and the carrier board can include a dedicated receptacle for a single LED module that is not connected in series with the remaining LED modules.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: September 15, 2020
    Assignee: Spectra Harvest Lighting, LLC
    Inventors: James Jeffery Hanson, Ricky Joe Sullivan McIntosh
  • Patent number: 10759995
    Abstract: The present invention relates to a process for producing a composite-fluoride fluorescent material represented by the general formula A2MF6:Mn4+ (wherein A is at least one alkali metal element including K; M is one or more metallic elements including at least Si or Ge and selected from among Si, Ge, Sn, Ti, Zr, and Hf; F is fluorine; and Mn is manganese). With the production process, it is possible to obtain a fluorescent material which is high in absorptance, internal quantum efficiency, and external quantum efficiency and has excellent optical properties.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: September 1, 2020
    Assignee: DENKA COMPANY LIMITED
    Inventors: Masayoshi Ichikawa, Ryosuke Kondo, Hideyuki Emoto, Motoi Tanaka
  • Patent number: 10756269
    Abstract: A composition comprising an organic EL material, a solvent (A) represented by the formula (1), an aromatic hydrocarbon solvent (B) and an aromatic ether solvent (C): [wherein R1 represents an alkyl group having a number of carbon atoms of 10 to 12].
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: August 25, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroyuki Saito, Takahiro Ueoka, Hidenobu Kakimoto
  • Patent number: 10739640
    Abstract: A light guide plate includes a bottom surface and a light emitting surface disposed opposite to the bottom surface. The light emitting surface sags down and forms a hollow, which is filled with a plurality of light-emitting quantum dots (QDs). The light emitting surface capped with a cover film, so to seal the plurality of light-emitting QDs in the hollow. Also provided are a backlight module including the light guide plate and a liquid crystal display using the backlight module. The hollow that is formed in the top surface of a flat body of the light guide plate and filled with light-emitting QDs helps enhance the color gamut of the display backlight. Further, side walls that surround the hollow can be narrowed so as to easily realize a narrow edge design for the backlight module.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: August 11, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Gege Zhou
  • Patent number: 10739504
    Abstract: A light guide plate includes a bottom surface and a light emitting surface disposed opposite to the bottom surface. The light emitting surface sags down and forms a hollow, which is filled with a plurality of light-emitting quantum dots (QDs). The light emitting surface capped with a cover film, so to seal the plurality of light-emitting QDs in the hollow. Also provided are a backlight module including the light guide plate and a liquid crystal display using the backlight module. The hollow that is formed in the top surface of a flat body of the light guide plate and filled with light-emitting QDs helps enhance the color gamut of the display backlight. Further, side walls that surround the hollow can be narrowed so as to easily realize a narrow edge design for the backlight module.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: August 11, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Gege Zhou
  • Patent number: 10711186
    Abstract: Embodiments of the present invention provide a phosphor improved in the emission intensity maintenance ratio without impairing the emission intensity and further a light-emitting device employing that phosphor. The phosphor is activated by manganese and has a basic structure comprising at least one element selected from the group consisting of potassium, sodium and calcium; at least one element selected from the group consisting of silicon and titanium; and fluorine. In an IR absorption spectrum of the phosphor, the intensity ratio of the peak in 3570 to 3610 cm?1 to that in 1200 to 1240 cm?1 is 0.1 or less.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: July 14, 2020
    Assignees: Kabushiki Kaisha Toshiba, TOSHIBA MATERIALS CO., LTD.
    Inventors: Ryosuke Hiramatsu, Keiko Albessard, Kunio Ishida, Yasushi Hattori, Masahiro Kato
  • Patent number: 10698263
    Abstract: A light source device includes: a substrate; a plurality of light sources disposed on the substrate; a wavelength conversion member disposed to face the plurality of light sources; and a diffusion member disposed between the wavelength conversion member and the plurality of light sources, and configured to uniformize distribution of traveling direction angle of incident light.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: June 30, 2020
    Assignee: Sony Corporation
    Inventors: Koichi Yamamoto, Kenji Kobayashi, Yasuhiro Nishida
  • Patent number: 10651349
    Abstract: A light emitting device includes a light emitting element adapted to emit blue light, quantum dots that absorb part of the blue light emitted from the light emitting element to emit green light, and at least one of a KSF phosphor adapted to absorb part of the blue light emitted from the light emitting element to emit red light and a MGF phosphor adapted to absorb part of the blue light emitted from the light emitting element to emit red light.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: May 12, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Kenji Kawano, Atsushi Yamamoto
  • Patent number: 10591775
    Abstract: A light guide plate includes a bottom surface and a light emitting surface disposed opposite to the bottom surface. The light emitting surface sags down and forms a hollow, which is filled with a plurality of light-emitting quantum dots (QDs), with the light emitting surface capped with a cover film, so to seal the the plurality of light-emitting QDs in the hollow. The present invention also proposes a backlight module having the light guide plate and a liquid crystal display using the backlight module. The present invention forms a hollow on the top surface of a flat body of the light guide plate. The hollow is filled with light-emitting QDs, which can enhance the color gamut of the display backlight. At the same time, the side walls surrounding the hollow can be narrowed so that it is easier to realize the narrow edge design of the backlight module.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: March 17, 2020
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Gege Zhou
  • Patent number: 10578917
    Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: March 3, 2020
    Assignee: Japan Display Inc.
    Inventors: Ken Sugiyama, Koji Hiramoto, Taketoshi Masamoto, Kazunari Nishita
  • Patent number: 10509263
    Abstract: Embodiments of a device and a method of forming the same are described. The device includes a backlight unit and an image generating unit. The backlight unit includes an optical cavity having a top side, a bottom side, and side walls. The backlight unit further includes an array of light sources coupled to the optical cavity and a quantum dot film positioned within the optical cavity. The quantum dot film is configured to process light received from the array of light sources and the backlight unit is configured to transit the processed light to the image generating unit. The method includes providing an optical cavity having a top side, a bottom side, and side walls. The method further includes coupling an array of light sources to the optical cavity and supporting a quantum dot film within the optical cavity.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: December 17, 2019
    Assignee: Nanosys, Inc.
    Inventors: Ernest Lee, Robert E. Wilson, Steven Gensler
  • Patent number: 10497840
    Abstract: A wavelength-converting film and a light emitting device and a display device using the same are disclosed. The wavelength converting film comprises a fluoride phosphor powder with a Mn4+ as an activator, wherein the fluoride phosphor powder with the Mn4+ as the activator comprises a sheet-like crystal and has a chemical formula of A2[MF6]:Mn4+, wherein A is Li, Na, K, Rb, Cs, NH4, or a combination thereof, and M is Ge, Si, Sn, Ti, Zr, or a combination thereof.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: December 3, 2019
    Assignee: LEXTAR ELECTRONICS CORPORATION
    Inventors: Ching-Yi Chen, Wen-Wan Tai, Yu-Chun Lee, Tzong-Liang Tsai
  • Patent number: 10490711
    Abstract: A light emitting device includes a light emitting element adapted to emit a blue light, a sealing resin covering the light emitting element, and a sulfide phosphor-containing layer disposed at an outer side of a sealing resin. The sealing resin contains at least one of a KSF phosphor adapted to absorb a portion of the blue light emitted from the light emitting element to emit red light and a MGF phosphor adapted to absorb a portion of the blue light emitted from the light emitting element to emit red light. The sulfide phosphor-containing layer includes a sulfide phosphor adapted to absorb a portion of the blue light emitted from the light emitting element to emit red light and a MGF phosphor adapted to absorb a portion of the blue light emitted from the light emitting element to emit green light.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: November 26, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Atsushi Yamamoto, Kenji Kawano
  • Patent number: 10465872
    Abstract: The present disclosure discloses a light source module and an illuminating device. The light source module and the device include adjusting the peak wavelength, the peak intensity and the chromaticity coordinate of the blue light, the red light and the yellow-green light in the irradiation light emitted by the light source module to be within the preset ranges, respectively.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: November 5, 2019
    Assignee: Opple Lighting Co., Ltd.
    Inventors: Jie Qiang, Zhixian Zhou
  • Patent number: 10260697
    Abstract: A vehicle lamp includes a plurality of projection lenses arranged in parallel in a certain direction intersecting a vehicle longitudinal direction, a plurality of first light emitting elements arranged behind the plurality of projection lenses, a common light source support member configured to support the plurality of first light emitting elements, the light source support member including at least one translucent part, and at least one second light emitting element disposed behind the common light source support member. A first light distribution pattern is formed by irradiating a direct light from each of the first light emitting elements toward the front through each of the projection lenses. A second light distribution pattern is formed by irradiating the light emitted from the at least one second light emitting element toward the front through the at least one translucent part and any one of the plurality of projection lenses.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: April 16, 2019
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Ippei Yamamoto
  • Patent number: 10234620
    Abstract: A light guide plate includes a light introduction surface to receive light supplied from a light source module and a light emission surface to emit the light outward, the light emission surface having a larger area than the light introduction surface. The light guide plate is of a material that transmits light and absorbs light in an absorption wavelength band. The light guide plate further includes a plurality of color patterns to convert the light supplied from the light source module into light in the absorption wavelength band.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: March 19, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Woosuk Lee, Guenhwan Kim, Juyoung Joung, Wondo Kee
  • Patent number: 10217907
    Abstract: A method of producing a nitride fluorescent material is provided. The nitride fluorescent material undergoes less change in chromaticity under a high-temperature and high-humidity condition and are excellent in durability. The nitride fluorescent material has a composition containing: at least one element selected from the group consisting of Ca, Sr, Ba, and Mg; at least one element selected from the group consisting of Li, Na, and K; at least one element selected from the group consisting of Eu, Ce, Tb, and Mn; Al; and N. The method includes: preparing a calcined product having the composition, bringing the calcined product in contact with a fluorine-containing substance, and heat-treating the calcined product at a temperature of 200° C. or more and 500° C. or less. A light emitting device using the nitride fluorescent material is also provided.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: February 26, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Sadakazu Wakui, Tadayoshi Yanagihara, Shoji Hosokawa
  • Patent number: 10197720
    Abstract: A backlight module includes a glue frame, a light guide plate, a first light source assembly, and a second light source assembly. The light guide plate and the first and second light source assemblies are accommodated in the glue frame. The first light source assembly includes a light source that includes LED light sources mounted on a substrate. The second light source assembly includes a plurality of laser light sources mounted on a substrate and a diffuser. The light guide plate includes first and second incident surfaces. The light source of the first light source assembly and the first incident surface are oppositely positioned. The laser light sources and the second incident surface are oppositely positioned. The diffuser is positioned between the laser light sources and the second incident surface with predetermined distances. Colors of the LED light sources and the laser light sources are complementary colors.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: February 5, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Yong Fan
  • Patent number: 10197820
    Abstract: Provided are quantum dots passivated by oligomers or polymers which are formed by a reaction of a first monomer having at least three thiol groups (—SH) at the terminal end with a second monomer having at least two functional groups at the terminal end that can react with the thiol groups, and a spacer group between the at least two functional groups.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: February 5, 2019
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Jinsuop Youn, Obum Kwon, Jun Woo Lee, Euihyun Kong, Jonggi Kim, Sang Cheon Park, Onyou Park, Heeje Woo, Sungseo Cho, Hyunjoo Han
  • Patent number: 10060604
    Abstract: A replacement LED insert module for retrofitting a pre-existing shoe box parking lot light. The module includes a plate into which an array of LED light fixtures capable of being operated directly from an AC power supply are mounted. The module is configured for attachment to a flange in the pre-existing shoe box parking lot light after the innards of the pre-existing light (bulbs, any reflectors, ballasts, etc.) have been removed.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: August 28, 2018
    Assignee: LED INSERT KIT ENTERPRISES, LLC
    Inventor: Darrel R. Shackelford
  • Patent number: 10030845
    Abstract: A backlight unit is discussed, which includes a frame including a bottom and a sidewall extending from the bottom; at least one substrate located on the frame, and a plurality of light sources mount on the at least one substrate; and a reflecting sheet located on the at least one substrate, wherein the reflecting sheet includes: a first sheet part located on the bottom, the first sheet part including a plurality of holes corresponding to the plurality of the light sources; a second sheet part extended from the first sheet; and a third sheet part extended from the second sheet part and located on the sidewall; wherein the second sheet part comprises a plurality of dot areas positioned sequentially in a direction from the first sheet part to the third sheet part and the plurality of dot areas include a first dot area and a second dot area, the first dot area including a plurality of dots having the same size and the second dot area including a plurality of dots having the same size, and wherein a size of the pl
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: July 24, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Sewon Oh, Eunseok Kim
  • Patent number: 10020430
    Abstract: The present invention provides a phosphor with a preferred orientation represented by the following formula: A2[MF6]:Mn4+, wherein A is selected from a group consisting of Li, Na, K, Rb, Cs, and NH4, M is selected from a group consisting of Ge, Si, Sn, Ti, and Zr. The preferred orientation is a (001)/(011) preferred orientation. The present invention also provides a method for fabricating the above phosphor. The present invention further provides a light-emitting element package structure employing the same.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: July 10, 2018
    Assignee: LEXTAR ELECTRONICS CORPORATION
    Inventors: Hoang Duy Nguyen, Ren Hong Wang, Chaochin Su, Ru-Shi Liu, Ching-Yi Chen, Yu-Chun Lee, Tzong-Liang Tsai
  • Patent number: 10012854
    Abstract: A curved display panel, a curved display device, and a method for fabricating the same are disclosed. Both the light output face and the light input face of the curved display panel are continuous curved surfaces. The curved display panel with a continuous curved surface has a bending degree which is closer to the natural bending degree of a liquid crystal panel, so that a relatively small stress is generated on the curved display panel, and the problem of serious peripheral light leakage caused by deformation of the curved display panel is alleviated. Besides, since the curvature radius of each point on the continuous curved surface changes slowly, the problem of serious peripheral light leakage caused by deformation of the curved display panel is alleviated, the complexity of the fabricating process is reduced, the fabricating process is simplified, and the production of the product is improved.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: July 3, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xibin Shao, Yingying Qu, Honglin Zhang, Hebin Zhao, Seungmin Lee, Dan Wang, Xiang Li
  • Patent number: 9982189
    Abstract: A wavelength conversion member which is a resin-molded article made of at least one type of thermoplastic resin selected from polyolefins, polystyrene, styrene copolymers, fluorocarbon resins, acrylic resins, nylons, polyester resins, polycarbonate resins, vinyl chloride resins, and polyether resins. The thermoplastic resin contains less than or equal to 30 mass % of a complex fluoride fluorophore represented by A2(M1-xMnx)F6 (M is at least one type of tetravalent element selected from Si, Ti, Zr, Hf, Ge, and Sn; A is at least one type of alkali metal selected from Li, Na, K, Rb, and Cs and including at least Na and/or K; and x is from 0.001 to 0.3) and having a particle diameter D50, which is the median diameter at a cumulative volume of 50% in particle size distribution, of from 2 ?m to 200 ?m inclusive. The complex fluoride fluorophore being dispersed in the thermoplasticresin.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: May 29, 2018
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Toshihiro Tsumori, Masami Kaneyoshi, Masatoshi Ishii, Takehisa Minowa
  • Patent number: 9897266
    Abstract: A light source module includes a light source, a light guide plate on the light source and including at least one recess portion in an upper surface thereof, and a filter sheet on an upper surface of the light guide plate and having a pattern. The pattern may be configured to partially reflect and partially transmit light emitted from the light source through the light guide plate.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: February 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung Mi Moon, Sang Woo Ha, Jong Sup Song, Tetsuo Ariyoshi, Jun Cho, Won Soo Ji