With Polarizer Patents (Class 362/19)
  • Patent number: 11567357
    Abstract: A display device may include a display panel including an active area displaying an image and a peripheral area surrounding the active area, pad parts disposed on a side surface of the display panel, a light blocking layer disposed on a portion of the peripheral area adjacent to the side surface of the display panel, and circuit units electrically connected to the pad parts.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: January 31, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myong-Soo Oh, Minsung Kim, Heejong Shin, Juno Song
  • Patent number: 11561573
    Abstract: A display device includes a display panel to display an image; and a sound generator disposed on a surface of the display panel to vibrate the display panel, wherein distances between each of a plurality of side surfaces of the sound generator and each of a plurality of side surfaces of the display panel respectively corresponding to the each of the plurality of side surfaces of the sound generator are substantially equal.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: January 24, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Hui Park, Jin Wook Lee
  • Patent number: 11543741
    Abstract: An illumination system, including a light source, a reflective optical element, a polarization conversion element, a beam splitting element, and a homogenizing element, is provided. The light source provides a first light beam having a first polarization state and a second light beam having a second polarization state. The reflective optical element is disposed on a transmission path of the first light beam and the second light beam. The polarization conversion element is disposed between the light source and the reflective optical element. The beam splitting element is disposed between the light source and the polarization conversion element. The beam splitting element includes at least one first region and at least one second region. The homogenizing element is disposed on a transmission path of a light beam reflected by the beam splitting element. A projection device having the illumination system is also provided.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: January 3, 2023
    Assignee: Coretronic Corporation
    Inventor: Chen-Wei Fan
  • Patent number: 11543669
    Abstract: A three (or more) polarizer arrangement is used to demonstrate a wide-angle variable-neutral-density (VND) filter that has both contrast uniformity and color uniformity. According to one embodiment, the outer polarizers effectively counter-rotate with respect to a fixed center polarizer as a means of compensating for transmission non-uniformity associated with geometrical polarization distortions experienced by off-normal rays. In particular, the achromatic compensation arrangement enables angle uniformity relative to normal-incidence transmission when the number of stops of attenuation grows large (e.g. 10-stops, or OD3). The filters are useful for cameras or instrumentation allowing mechanical or electromechanical tuning.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: January 3, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Gary D. Sharp, Anthony D. McGettigan
  • Patent number: 11506360
    Abstract: Provided is compatibility between adhesion to a substrate (lower layer) and durability improvement. An optical element includes a phosphor layer facing a lower layer, and a bonding layer keeping the phosphor layer in intimate contact with the lower layer. The phosphor layer includes an inorganic binder, and phosphor particle dispersed with the inorganic binder. The bonding layer includes an organic binder. The phosphor layer has a first surface facing the lower layer, a second surface opposite to the first surface, and a side surface connecting the first and second surfaces together. The bonding layer connects together the second surface, the side surface, and a surface of the lower layer to keep the phosphor layer in intimate contact with the lower layer.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: November 22, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideomi Yui, Shigeru Aomori, Tsuyoshi Kamada, Hidetsugu Matsukiyo, Toru Kanno, Hirokazu Ichinose
  • Patent number: 11441757
    Abstract: Light conversion devices and lighting devices having such conversion devices are provided. The conversion device includes a light conversion element having a front side and a coating arrangement. The front side is configured to be illuminated with primary light and to emit secondary light having another wavelength or a wavelength range. The coating arrangement is on the front side and has at least one coating layer.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: September 13, 2022
    Assignee: SCHOTT AG
    Inventors: Frank Gindele, Edgar Pawlowski, Christian Rakobrandt, Christoph Stangl, Thorsten Damm
  • Patent number: 11420412
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: August 23, 2022
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 11422450
    Abstract: A light source device, comprising an excitation light source, a wavelength conversion element, a transparent substrate, and a light splitter. The wavelength conversion element comprises a wavelength conversion area and a scattering area. The excitation light source emits excitation light that has a first polarization state. The transparent substrate guides first part of the excitation light to the scattering area and guides second part of the excitation light to the light splitter; and the light splitter guides, directly or by means of a guiding device, the second part of the excitation light to the wavelength conversion area. The scattering area scatters the first part of the excitation light and guides the scattered first part of the excitation light to the transparent substrate; and the transparent substrate and the light splitter guide the scattered first excitation light to a light-emitting channel directly or by means of the guiding device.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: August 23, 2022
    Assignee: Appotronics Corporation Limited
    Inventors: Zu-Qiang Guo, Bing-Ke Yang, Yi Li
  • Patent number: 11366262
    Abstract: A lighting device includes light sources and a light guide plate. The light guide plate includes a base portion and a light collecting portion. The base portion includes a light entering surface and a light exiting surface. The light collecting portion protrudes from the light exiting surface. The light collecting portion includes light collecting sections elongated in a first direction parallel to a normal direction to the light entering surface and arranged in a second direction perpendicular to the first direction. The light collecting sections perform linearity adjustment to rays of light so that the rays of light travel along the first direction. The light collecting sections include first light collecting regions and second light collecting regions. The second light collecting regions perform the linearity adjustment at a degree greater than a degree of the linearity adjustment by the first light collecting regions.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: June 21, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shugo Yagi, Yuuichi Kanbayashi, Satoshi Tsubooka
  • Patent number: 11280455
    Abstract: A flashlight having a housing, a light-end assembly, and a user interface. The light-end assembly, which may be coupled to an end of the housing, may comprise a flexible light component having a proximal end and a distal end. A first plurality of light emitting diodes (LEDs) may be distributed on the first flexible light component between the proximal end and the distal end. The flexible light component may include a flexible, semi-rigid structure to maintain the flexible light component in a desired shape or position.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: March 22, 2022
    Assignee: Schumacher Electric Corporation
    Inventors: Patrick J. Clarke, John S. Whiting
  • Patent number: 11262029
    Abstract: A lighting device includes at least one semiconductor light source, at least one incandescent filament configured to emit electromagnetic radiation when energized, and a carrier supporting both the semiconductor light source and the incandescent filament. A screen is defined by the carrier between the semiconductor light source and the incandescent filament, so as to shield the semiconductor light source from the electromagnetic radiation emitted by the incandescent filament. The incandescent filament connected in series with the at least one semiconductor light source.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 1, 2022
    Assignee: OSRAM Beteiligungsverwaltung GmbH
    Inventor: Sebastian Jooss
  • Patent number: 11198270
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: December 14, 2021
    Assignee: NANOSYS, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 11181681
    Abstract: A multi-waveguide optical structure, including multiple waveguides stacked to intercept light passing sequentially through each waveguide, each waveguide associated with a differing color and a differing depth of plane, each waveguide including: a first adhesive layer, a substrate having a first index of refraction, and a patterned layer positioned such that the first adhesive layer is between the patterned layer and the substrate, the first adhesive layer providing adhesion between the patterned layer and the substrate, the patterned layer having a second index of refraction less than the first index of refraction, the patterned layer defining a diffraction grating, wherein a field of view associated with the waveguide is based on the first and the second indices of refraction.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: November 23, 2021
    Assignee: Molecular Imprints, Inc.
    Inventors: Frank Y. Xu, Michael Nevin Miller, Kang Luo, Vikramjit Singh, Michael Klug
  • Patent number: 11165004
    Abstract: A component with an optoelectronic part is disclosed. In an embodiment a component includes a carrier, at least one optoelectronic part arranged on the carrier, the part configured to emit electromagnetic radiation, a frame arranged on the carrier and enclosing a part space, wherein the part is arranged in the part space, and wherein the frame comprises a reflector and a lens arranged on the frame and at least partially covering an opening of the part space, wherein the lens is configured to direct the electromagnetic radiation of the part, wherein the lens comprises at least a partial pyramidal shape on a first side face facing toward the part, wherein the partial pyramidal shape of the lens comprises lateral faces, wherein the lateral faces meet one another via edges, and wherein the reflector is configured to direct radiation of the part onto the lens.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: November 2, 2021
    Assignee: OSRAM OLED GMBH
    Inventor: Claus Jäger
  • Patent number: 11163108
    Abstract: A lighting module includes a circuit board, a light emitting diode, a light guide plate, and a waterproof adhesive. The circuit board has an insulating layer, a metal layer, and a circuit layer. The insulating layer is interposed between the metal layer and the circuit layer. The metal layer has an opening exposing a portion of the insulating layer. The light emitting diode has a light emitting surface and a non-light emitting surface facing the metal layer. The light guide plate is parallel or substantially parallel to the circuit board and is adjacent to the light emitting surface of the light emitting diode. An optical axis of the light emitting diode coincides with or substantially coincides with a symmetry axis of the light guide plate. The portion of the insulating layer is adhered to the light guide plate through the waterproof adhesive.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: November 2, 2021
    Assignee: E Ink Holdings Inc.
    Inventors: Yen-Ze Huang, Tsai-Wei Shei, Chih-Ching Yen, Hsin-Tao Huang
  • Patent number: 11130288
    Abstract: The present disclosure relates to a digital light projector (DLP) system which has first and second light sources. The first optical source may generate a first beam at a first wavelength which causes polymerization of a photopolymerizable resist. The second optical source may generate a second beam at a second wavelength different from the first wavelength, and where the second beam inhibits polymerization of the photopolymerizable resist. A digital micromirror device (DMD) is included which has a plurality of micromirrors and is configured to be illuminated by the first and second beams and to generate a pattern on the micromirrors which has light from the first and second light wavelengths controlled by the micromirror position. The first light image causes polymerization of a first portion of the photopolymerizable resist, while the second image inhibits polymerization of a second portion of the photopolymerizable resist.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: September 28, 2021
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Bryan D. Moran
  • Patent number: 11061283
    Abstract: A quantum rod display device has an enhanced alignment of the quantum rods that is achieved by employing an aligned block copolymer material to align the quantum rods. The display device may be a transflective display device. The display device includes a liquid crystal layer and a quantum rod structure optically coupled to the liquid crystal layer. The quantum rod structure includes an aligned block copolymer material including a first polymer strain and a second polymer strain that are aligned relative to each other, and quantum rods that are embedded within either the first polymer strain or the second polymer strain, and the quantum rods are aligned by the alignment of the polymer strain in which the quantum rods are embedded. The quantum rod structure may be unpatterned whereby the quantum rod structure emits light of a single color or a combined color emission, or patterned into regions whereby at least two of the regions include quantum rods that emit light of different colors.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: July 13, 2021
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Andrew Acreman, Nathan James Smith
  • Patent number: 11003011
    Abstract: A display panel may include a first base substrate, a second base substrate facing the first base substrate, a plurality of wavelength conversion parts that are provided on the first base substrate to face the second base substrate, and at least one of the plurality of wavelength conversion parts includes an emission body, a light blocking layer partially covering the plurality of wavelength conversion parts and having a plurality of openings, the light blocking layer including a metallic material, and a first organic layer provided on the light blocking layer without overlapping the openings.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: May 11, 2021
    Inventors: Hongbeom Lee, Kyungtae Chae, Hanjun Yu, Yeogeon Yoon, Keunwoo Park
  • Patent number: 10989961
    Abstract: In an embodiment, a display device comprises a display panel and a backlight unit. The backlight unit comprises a printed circuit, a light-emitting device on the printed circuit, and a transparent film including a holographic film. The holographic film includes at least an optical pattern overlapping the light-emitting device and modifying angle of a portion of light emitted by the light-emitting device. The backlight unit further comprises a light output pattern, where the portion of light with the modified angle passes through the light output pattern toward the display panel. The light output pattern may have a refractive index greater than a refractive index of the transparent film such that a refraction angle of the portion of light exiting the light output pattern is less than the incidence angle of the portion of light entering the light output pattern.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: April 27, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: KiSeong Kim, HyeokJoon Yoon, SeungJu Gwon, Donghwi Kim
  • Patent number: 10955703
    Abstract: A polarizer component has an optical film to receive excitation light, a light re-emitting layer and a polarizing layer. The light re-emitting layer has quantum dots that re-emit red light and quantum dots that re-emit green light in response to the excitation light. The re-emitted red light is provided to a red sub-pixel to be filtered by a red color filter, and the re-emitting green light is provided to a green sub-pixel to be filtered by a green color filter. The excitation light can be blue or ultra violet and part of the excitation light is provided to a blue sub-pixel. The polarizing layer can be a reflective polarizing layer and the optical film can be a wavelength selecting layer. The light re-emitting layer may contain scattering particles to diffuse the excitation light provided to a blue sub-pixel.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: March 23, 2021
    Assignee: A.U. VISTA, INC.
    Inventors: Yi-Wen Lin, Adiel Abileah, Willem Den Boer, Fang-Chen Luo, Shu-Han Wang, Chih-Kang Wu
  • Patent number: 10928578
    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.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: February 23, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shugo Yagi, Takeshi Ishida, Yuuichi Kanbayashi, Satoshi Tsubooka
  • Patent number: 10921698
    Abstract: A light source device according to the present disclosure includes a light source configured to emit excitation light, a first rod part including a phosphor and configured to emit fluorescence in response to incidence of the excitation light, a second rod part located in parallel to the first rod part, including a phosphor, and configured to emit fluorescence in response to incidence of the excitation light, a first reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the first rod part, and a second reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the second rod part.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: February 16, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hidefumi Sakata, Junichi Suzuki, Shingo Komiyama
  • Patent number: 10915007
    Abstract: An imaging apparatus includes an imaging element, a lens unit that focuses light on the imaging element, and a light source disposed around the lens unit. The lens unit includes a blocking part that projects over a region located around the lens unit and facing the light source so as to block stray light from the light source.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: February 9, 2021
    Assignee: FUJITSU FRONTECH LIMITED
    Inventor: Akinori Tsujikawa
  • Patent number: 10823352
    Abstract: The present invention relates to a vehicle headlight that ensures maintaining usage efficiency of a light of the vehicle headlight while improving visibility of an irradiation target on a road by a headlight light from a host vehicle. A vehicle headlight 1 having a headlight unit 4 forming a light distribution pattern by projecting a light B1 from a light source 9 ahead includes a polarized light generator 8, a first headlight unit 5, and a second type headlight unit 6. The polarized light generator 8 generates a first and a second polarized lights (B11, B12) by the light B1 from the light source 9. The first headlight unit 5 indicates main light distribution patterns (La1, Lb1) by a first polarized light B11 ahead. The second type headlight unit 6 scans with a second polarized light B12 using a scanning mechanism 13, and indicates ahead auxiliary light distribution patterns (La2, Lb2) irradiating a range narrower than the main light distribution patterns (La1, Lb1).
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: November 3, 2020
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Satoshi Yamamura, Kenta Mukojima, Yusuke Nakada
  • Patent number: 10788339
    Abstract: The invention relates to a light conductor for sensory purposes, comprising at least one crack, wherein a longitudinal direction of the crack relative to a direction of propagation of the light conductor includes an angle of incidence (?), and wherein the crack is delimited by two boundary surfaces, each of which is substantially parallel to the longitudinal direction of the crack, the two boundary surfaces including an opening angle (?), said opening angle (?) being greater than 0°.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: September 29, 2020
    Inventor: Wilhelm Zackl
  • Patent number: 10782551
    Abstract: A display device is provided in the disclosure. A color filter substrate of a liquid crystal display panel has a quantum rod light-emitting layer disposed thereon, which includes a plurality of separation members arranged in a form of array and a quantum rod material manufactured in the separation members. The beneficial effects are that the display device has the quantum rod light-emitting layer with polarization ability disposed on an external surface of the liquid crystal display panel, and by a combination of excitation of the quantum rod, polarization property of fluorescence spectroscopy, and ability of the liquid crystal to change polarization, a liquid crystal television having high brightness and high color gamut can be carried out.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: September 22, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Hongqing Cui, Guowei Zha
  • Patent number: 10782002
    Abstract: A light-emitting diode (LED) optical component comprises a component substrate and an disposed on the component substrate. The LED emits light when provided with electrical power. An optical element is disposed at least partly in contact with the component substrate such that at least a portion of the emitted light is incident on the optical element. A second optical element can optionally be disposed between the LED and the component substrate or on a side of the component substrate opposite the LED. An LED optical system includes a system substrate on which one or more LED optical components are disposed. The system substrate can be or include one or more optical elements.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: September 22, 2020
    Assignee: X Display Company Technology Limited
    Inventors: Christopher Bower, Matthew Meitl, Ronald S. Cok, Brent Fisher
  • Patent number: 10771730
    Abstract: A display apparatus includes: a display panel including: a display area configured to display an image, and a non-display area, at least one first sound generator in the display area, and at least one second sound generator in the non-display area, wherein each of the at least one first sound generator and the at least one second sound generator is configured to vibrate the display panel to generate sound toward a front of the display panel.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: September 8, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Sungtae Lee, SeYoung Kim, KwanHo Park, YeongRak Choi, Kwangho Kim, Sungsu Ham
  • Patent number: 10752810
    Abstract: The present invention is an assembly layer for a flexible device. Within a temperature range of between about ?30° C. to about 90° C., the assembly layer has a shear storage modulus at a frequency of 1 Hz that does not exceed about 2 MPa, a shear creep compliance (J) of at least about 6×10?6 l/Pa measured at 5 seconds with an applied shear stress between about 50 kPa and about 500 kPa, and a strain recovery of at least about 50% at at least one point of applied shear stress within the range of about 5 kPa to about 500 kPa within about 1 minute after removing the applied shear stress.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: August 25, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Belma Erdogan-Haug, Albert I. Everaerts, David S. Hays, David J. Kinning, Maria A. Appeaning, Jong-Seob Won, Ross E. Behling, Jason D. Clapper, Marie Aloshyna ep Lesuffleur
  • Patent number: 10704754
    Abstract: A vehicle lamp system based on a PBS (Polarization Beam Splitter) is provided, including a light source, the PBS, a collimating lens set, an imaging lens set, an LCOS (Liquid Crystal on Silicon) control chip and a light path control unit. The collimating lens set and the PBS are successively arranged along a light emission direction of the light source. The LCOS control chip is arranged at a light path of an S wave reflected by a contact surface of the PBS. The imaging lens set is arranged at an emergent light path of the S wave after being modulated by the LCOS control chip and transmitted through the contact surface of the PBS. The light path control unit is arranged at a light path of a P wave transmitted through the contact surface of the PBS. Through the light path control unit, utilization of a light energy is improved.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: July 7, 2020
    Assignee: HASCO VISION TECHNOLOGY CO., LTD.
    Inventor: Jie Zhang
  • Patent number: 10691024
    Abstract: An apparatus for generating filtered light may include a broadband illumination source configured to generate broadband illumination and a total internal reflection (TIR) filter formed from a material at least partially transparent to the broadband illumination. The TIR filter may include one or more input faces oriented to receive the broadband illumination. The TIR filter may further be oriented to reflect wavelengths of the broadband illumination beam below a selected cutoff wavelength on one or more filtering faces as filtered broadband illumination and provide the filtered broadband illumination beam through one or more output faces. The cutoff wavelength may further be selected based on total internal reflection on the one or more faces.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: June 23, 2020
    Assignee: KLA-Tencor Corporation
    Inventors: Wei Zhao, Ilya Bezel
  • Patent number: 10670225
    Abstract: A lighting device includes a lens, a primary light source and multiple secondary light sources positioned about a perimeter of the lens. Each of the secondary light sources is configured to produce a sparkling effect.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: June 2, 2020
    Assignee: ELATION LIGHTING, INC.
    Inventors: Matthias Hinrichs, Toby Velazquez
  • Patent number: 10571788
    Abstract: A light source device includes at least one first light emitting device configured to emit first light of a first color in a first direction and a plurality of second light emitting devices configured to emit second light of a second color different from the first color in the first direction. The number of the plurality of second light emitting devices is larger than the number of the at least one first light emitting device. The plurality of second light emitting devices are substantially rotationally symmetrically provided around the center axis of a first light in a peripheral region of the at least one first light emitting device.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: February 25, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 10557611
    Abstract: A method for adjusting output light color from a vehicular headlamp unit to correct the difference or change of white light of a light source by a liquid crystal element. The vehicular headlamp unit includes a light source; an information acquisition unit that acquires information in front of a own vehicle; an irradiation pattern calculation unit that determines an irradiation pattern on the basis of the information; a voltage application unit that applies a voltage to a liquid crystal element on the basis of the irradiation pattern; the liquid crystal element that changes a transmittance of each of light control regions on the basis of the voltage; and a projection optical system that performs light distribution control of light controlled to be transmitted by the liquid crystal element. The method includes adjusting color of light emitted from the vehicular headlamp unit by the voltage applied to the liquid crystal element.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: February 11, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Takashi Sugiyama, Tsuyoshi Maruyama
  • Patent number: 10551553
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: February 4, 2020
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 10545373
    Abstract: The present disclosure provides a backlight module and a liquid crystal display device, and the backlight module includes a back plate, a light guide plate and a light source. The back plate and the light guide plate are laminated. The back plate includes a mounting groove disposed at a first end of the back plate. The light source is arranged in the mounting groove. A light emergent surface of the light source faces a light incident surface of the light guide plate.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: January 28, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Huiqiang Ye
  • Patent number: 10539284
    Abstract: A headlamp for vehicles with a laser module comprising a laser light source for the radiation of a laser light beam, and an optic unit to shape the laser light beam to form a given light distribution. The optic unit has a primary optic device for the imaging of an intermediate image on an intermediate image plane. The optic unit has a deflection device which is arranged in an intermediate image plane and which has a limiting edge by means of which a share of the light of the laser light beam is deflected along a light path in the direction of a bundling device, by means of which the share of light is deflected into a light distribution while forming a cut-off line.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: January 21, 2020
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Rainer Kauschke, Frank Passgang, Herbert Cramer, Hendrik Weise
  • Patent number: 10539736
    Abstract: The present disclosure provides a light source module that includes a substrate, a plurality of light barriers on a surface of the substrate and spaced apart from each other, a plurality of light source packages on the surface of the substrate and positioned between the plurality of light barriers, and a total-reflection induction layer on the plurality of light source packages. The total-reflection induction layer has a flat surface opposite the plurality of light source packages. According to the various embodiments provided herein, the amount of light incident on a light guide plate increases, and a heat radiation effect is improved.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: January 21, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Chang Kyeong Kong, Young Min Kweon, Jinho Kim
  • Patent number: 10529947
    Abstract: A display device includes: a display panel divided into a display area and a peripheral area, the peripheral area being adjacent to the display area; a cover member on the display panel, the cover member being divided into a transmission area overlapping with the display area and a bezel area overlapping with the peripheral area; and a light guide member between the cover member and the display panel, the light guide member including a base member including at least one recessed portion overlapping with the peripheral area, and a filling portion at the recessed portion.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: January 7, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: Seokgi Baek
  • Patent number: 10475875
    Abstract: A display device including a display panel and a back cover is provided. In the display device, a flexible circuit film electrically connected to the display panel may be extended between the display panel and the back cover. In the display device, a cover tape is disposed between the flexible circuit film and the back cover. A portion of the flexible circuit film disposed close to an edge of the display panel may be exposed by the cover tape. Thus, the display device may prevent damage of the flexible circuit film due to the outer pressure.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: November 12, 2019
    Assignee: LG Display Co., Ltd.
    Inventor: Hong-Dae Shin
  • Patent number: 10459146
    Abstract: A display device and a method for manufacturing the same are disclosed. The display device includes a backlight module, a display panel, and a decorative film. The backlight module includes: a reflective layer disposed on the decorative film; a light guide plate disposed on the reflective layer, a set of optical films including a first diffusion layer, and at least one refractive layer. The light guide plate has a first surface facing the reflective layer and a second surface opposite to the first surface, and the first diffusion layer is disposed on the second surface. At least one refractive layer is disposed on at least one of the first surface and the second surface, wherein a refractive index of the refractive layer is between 1.15 and 1.45. The display panel is disposed on one side of the set of optical films far away from the light guide plate.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: October 29, 2019
    Assignee: INNOLUX CORPORATION
    Inventors: Hui-Chi Wang, Yen-Liang Chen, Fang-Ho Lin, Chin-Lung Ting
  • Patent number: 10429636
    Abstract: An illumination device includes: an excitation light source that emits excitation light having a first wavelength; a fluorescent substance that, when irradiated with the excitation light, emits light having a second wavelength longer than the first wavelength and transmits a part of the excitation light, and thereby multiplexes and emits the transmitted excitation light having the first wavelength and the emitted excitation light having the second wavelength; and a driving unit that moves an irradiation position of the excitation light in the fluorescent substance with the passage of time.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: October 1, 2019
    Assignee: Sony Corporation
    Inventor: Yoshikazu Komatsu
  • Patent number: 10408408
    Abstract: A headlamp for a vehicle comprises: a light source emitting light forming a beam pattern, the light comprising light waves having an electric field vector oscillating in all directions perpendicular to a path of travel of the light wave, and the beam pattern comprising a foreground portion relative to a horizontal axis and a non-foreground portion; and one or more filters dedicated to the foreground portion of the beam pattern that does not transmit light waves having an electric field vector oscillating in a direction parallel to the horizontal axis. The light source can be one or more light emitting diodes. The filter can be an absorptive polarizer. The absorptive polarizer can be a polarizing sheet.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: September 10, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Linsheng Chen, Steven J. Antilla
  • Patent number: 10359155
    Abstract: A light-emitting apparatus includes an excitation light source that emits first light; a light-emitting device on an optical path of the first light, the light-emitting device emitting second light having a wavelength in air; and a first converging lens on an optical path of the second light. The light-emitting device comprises: a photoluminescent layer that emits the second light by being excited by the first light; and a light-transmissive layer on the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a surface structure comprising projections or recesses arranged perpendicular to a thickness direction of the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a light emitting surface perpendicular to the thickness direction, the second light emitted from the light emitting surface. The surface structure limits the directional angle of the second light emittied from the light emitting surface.
    Type: Grant
    Filed: July 10, 2016
    Date of Patent: July 23, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taku Hirasawa, Yasuhisa Inada, Akira Hashiya, Nobuaki Nagao, Akira Tsujimoto
  • Patent number: 10283727
    Abstract: An organic EL element includes an anode, a cathode opposing the anode, a light-emitting layer disposed between the anode and the cathode, an electron transport layer disposed in contact with a cathode-side surface of the light-emitting layer, and an electron injection layer disposed between the electron transport layer and the cathode, in contact with the electron transport layer. Lowest unoccupied molecular orbital (LUMO) level of the electron transport layer is lower than at least one of LUMO level of the electron injection layer and Fermi level of a metal material included in the electron injection layer, and film thickness of the electron injection layer is greater than film thickness of the electron transport layer.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: May 7, 2019
    Assignee: JOLED INC.
    Inventor: Kosuke Mishima
  • Patent number: 10174249
    Abstract: Embodiments relate to a quantum rod composition, a quantum rod film, a display device with a quantum rod film, and a method of forming a quantum rod film. The quantum rod film includes a plurality of quantum rods and a polymer with a dipole side chain. Responsive to an external electric field, the major axis of the quantum rods and an axis of the dipole side chain arranges in the same direction. The display device includes a plurality of pixel and common electrodes for generating an electric field, and a backlight unit positioned under a first substrate. Responsive to receiving light from the backlight unit, the quantum rod film emits light polarized in a direction parallel to the major axis of the quantum rods.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 8, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Kyu-Nam Kim, Jin-Wuk Kim, Byung-Geol Kim, Kyung-Kook Jang, Hee-Yeol Kim, Sung-Il Woo, Tae-Yang Lee
  • Patent number: 10146061
    Abstract: A double-ring lens filter holder includes a limiting ring, a lock ring, a fixed filter, an adjusting ring, a rotary filter, a compression ring, and at least one guide rod. Each guide rod is mounted through a respective curved recess which is formed through the limiting ring, and each guide rod is mounted securely on the rotary filter. When the fixed filter and the rotary filter are both polarizing filters, in addition to moving the guide rod to adjust the polarizing and darkening effects, the curved recess can also limit the rotating angle of the guide rod to eliminate the cross pattern. Besides, the protruding guide rod allows the users to accurately find the position at which the rotary filter can be rotated.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: December 4, 2018
    Assignee: Microview Technology Corp.
    Inventor: Tzu-Shang Huang
  • Patent number: 10118534
    Abstract: An irradiation apparatus includes a shielded object detecting unit, an illumination setting unit, an irradiating device, and an illumination controlling unit. The shielded object detecting unit detects a shielded object. Glare is allowable to the shielded object at an upper limit of illumination brightness or less. A driver can visually recognize the shielded object at an lower limit of the illumination brightness or more. The illumination setting unit sets the illumination brightness based on the upper limit and the lower limit of the illumination brightness. The illumination controlling unit controls the irradiating device such that light is emitted in a predetermined irradiation pattern in which a first part of the shielded object is illuminated at the illumination brightness set by the illumination setting unit and a second part of the shielded object is illuminated at a higher illumination brightness than that of the first part.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: November 6, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shin-ichi Kojima, Keiichi Shimaoka, Toshihiko Tsukada, Kazuya Asaoka, Sho Masuda
  • Patent number: 10088753
    Abstract: A reconfiguring image brightness (RIB) module includes a switch, a first lens, a digital micro-mirror device (DMD), a second lens and a third lens. The switch selectively allows a first image having a light intensity distribution to pass, wherein the first image is formed after an illumination beam passes through a photomask. The first lens outputs a second image by modulating the size of the first image passes through the first lens, and the second image is imaged on the DMD. A third image having a reconfigured light intensity distribution is formed by the DMD, and the third image is outputted to the second lens by the DMD. A fourth image is formed after the third image passes through the second lens, a fifth image is formed after the fourth image passes through the third lens and the fifth image is outputted from the RIB module.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: October 2, 2018
    Assignee: Powerchip Technology Corporation
    Inventor: Chun-Liang Lin
  • Patent number: 10048426
    Abstract: A light guide includes a front surface. A back surface is opposite the front surface and includes a depression. A light incident surface introduces light. The light reflects off the depression and is emitted through the front surface. The depression includes an inclined side surface that faces the light incident surface. The inclined side surface includes a reflective curved surface that includes at least 50% of a surface area of the inclined side surface. In a cross section view of the depression in a plane substantially orthogonal to the front surface, a first tangent that touches a curved line defining the reflective curved surface of the inclined side surface and a second tangent that touches the curved line in a different location than the first tangent form a first angle that is greater than or equal to 0° and less than or equal to 30°.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: August 14, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Osamu Tanahashi, Hiroyuki Sekii