Particular Illumination Patents (Class 349/61)
  • Patent number: 11315979
    Abstract: According to an aspect, a display device includes: a substrate; a plurality of pixels; a first anisotropic diffusion layer and a second anisotropic diffusion layer that are layered; and a plurality of light emitting elements interposed between the first anisotropic diffusion layer and the substrate. The first anisotropic diffusion layer and the second anisotropic diffusion layer each include a high refractive index region and a low refractive index region in a mixed manner. An absolute value of a first angle formed by a boundary between the high refractive index region and the low refractive index region of the first anisotropic diffusion layer and a direction perpendicular to the substrate is different from an absolute value of a second angle formed by a boundary between the high refractive index region and the low refractive index region of the second anisotropic diffusion layer and the direction perpendicular to the substrate.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: April 26, 2022
    Assignee: Japan Display Inc.
    Inventor: Osamu Itou
  • Patent number: 11309461
    Abstract: An optoelectronic semiconductor device and a method for manufacturing an optoelectronic semiconductor device are disclosed. In an embodiment, an optoelectronic semiconductor device includes a semiconductor body having an active region configured to generate electromagnetic radiation and a coupling-out surface along a main radiation direction, and a wavelength conversion element having conversion regions, the conversion regions optically separated from one another by metallic separators, wherein the wavelength conversion element is arranged downstream of the semiconductor body in the main radiation direction of the active region, wherein the active region comprises a plurality of independently controllable emission regions, and wherein the emission regions are at least partially aligned with the conversion regions and explicitly assigned to the conversion regions.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: April 19, 2022
    Assignee: OSRAM OLED GMBH
    Inventors: Britta Göötz, Norwin von Malm
  • Patent number: 11289630
    Abstract: Light emitting devices having a first LED with a first phosphor, a second LED with a second phosphor and a third LED with a third phosphor to emit a composite white light are described. The first LED and first phosphor emit the red spectral component, the second LED and the second phosphor emit the blue spectral component and the third LED and third phosphor emit the green spectral component of the composite white light. The green spectral component has at least 30% radiant flux in a deep red spectral wavelength region.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: March 29, 2022
    Assignee: Lumileds LLC
    Inventor: Wouter Soer
  • Patent number: 11281042
    Abstract: An optical film may include a first pattern layer having a first refractive index and including a base portion and a plurality of protrusions on the base portion x, and a second pattern layer disposed on the first pattern layer and having a second refractive index different from the first refractive index. Each of the protrusions may include n sub-protrusions (n is an integer of 2 or greater), which are stacked in a thickness direction of the base portion. Each of the n sub-protrusions may have a quadrilateral shape. A side surface of the protrusion defined by the n sub-protrusions may include at least one step portion. The optical film improves display quality of a display device in front and lateral directions.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: March 22, 2022
    Inventors: Jongmin Ok, Young Gu Kim, Jiyun Park, Jongho Son, Sun-Young Chang, Hyelim Jang, Baekkyun Jeon, Kyungseon Tak
  • Patent number: 11275265
    Abstract: Color conversion films for a LCD (liquid crystal display) having RGB (red, green, blue) color filters, as well as such displays, formulations, precursors and methods are provided, which improve display performances with respect to color gamut, energy efficiency, materials and costs. The color conversion films absorb backlight illumination and convert the energy to green and/or red emission at high efficiency, specified wavelength ranges and narrow emission peaks. Film integration and display configurations further enhance the display performance with color conversion films utilizing various color conversion elements and possibly patterned and/or integrated with a crosstalk blocking matrix. For example, color conversion and/or assistant dyes may be used to enhance spectral regions transmitted through the color filters and shape the illumination spectrum, to improve efficiency and performance.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: March 15, 2022
    Assignee: MOLECULED LTD.
    Inventors: Daniel Szwarcman, Ziv Sobol
  • Patent number: 11256130
    Abstract: A display device includes a first display panel including a light emitting element; a light condensing element at a side portion of the first display panel; a light guide plate below the first display panel; The light condensing element transmits external light to the light guide plate.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: February 22, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Uk Bang, Jang Sik Park, Joo Young Lee
  • Patent number: 11250771
    Abstract: A display device includes an array of driver circuits distributed in a display area for driving corresponding LED zones and an array of sensor circuits distributed in the display area for sensing conditions associated with the driver circuits or LED zones. Various communication protocols and connectivity configurations may be employed to communicate driver control signals to the driver circuits and to obtain readback data from the sensors. A control circuit adjusts operation of the display device based on sensor data obtained from the sensor.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: February 15, 2022
    Assignee: Huayuan Semiconductor (Shenzhen) Limited Company
    Inventors: Chih-Chang Wei, Junjie Zheng, Richard Landry Gray, Ping-Yuan Lin, Jyun-Long Lin
  • Patent number: 11251234
    Abstract: A display unit of a display device includes a light emitting unit and a light converting layer disposed on the light emitting unit. The display unit emits an output light under an operation of the highest gray level, and the output light has an output spectrum. An intensity integral of the output spectrum from 380 nm to 489 nm defines as a first intensity integral, an intensity integral of the output spectrum from 490 nm to 780 nm defines as a second intensity integral, a ratio of the first intensity integral over the second intensity integral defines as a first ratio, and the first ratio is greater than 0% and less than or equal to 7.5%.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: February 15, 2022
    Assignee: InnoLux Corporation
    Inventors: Hsiao-Lang Lin, Jui-Jen Yueh, Kuan-Feng Lee, Jia-Yuan Chen
  • Patent number: 11243435
    Abstract: A display device according to the present disclosure includes: a color conversion panel; and a display panel overlapping the color conversion panel, wherein the color conversion panel includes a color conversion layer including a nano-crystalline semiconductor and a transmission layer, the display panel includes a first display panel including a first substrate and a thin film transistor disposed on the first substrate, a second display panel including a second substrate and overlapping the first display panel. The first substrate and the second substrate have different thicknesses.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: February 8, 2022
    Inventors: Duk-Sung Kim, Jung Hyun Kwon, Dong-Yoon Kim
  • Patent number: 11237420
    Abstract: A liquid-crystal display that includes a liquid-crystal module and a touch panel covering the liquid-crystal module. The liquid-crystal display includes a holder extending along the outer end of the liquid-crystal module, the holder holding the touch panel in a state of covering the liquid-crystal module. The liquid-crystal display includes a double-faced tape disposed between a surface of the touch panel and a surface of the holder facing each other, the double-faced tape fixing the touch panel and the holder together. The double-faced tape includes multiple segments continuously disposed in a direction where the holder extends, the segments being mutually separable.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: February 1, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kazuki Nakamichi
  • Patent number: 11221527
    Abstract: A viewing angle of emission light is widened. A width of the viewing angle is adjusted. A liquid crystal diffraction grating includes at least a first substrate, a liquid crystal layer and a second substrate. The first substrate includes a lower electrode and an upper electrode opposite to the lower electrode, and the upper electrode includes a plurality of branch electrodes that extend in a Y direction and are arranged in an X direction in a plan view. When no voltage is applied to the plurality of branch electrodes, an alignment direction of liquid crystal molecules of the liquid crystal layer is a direction along the X or Y direction. When polarizers are arranged on upper and lower sides of the liquid crystal diffraction grating, transmission axes of these polarizers are parallel to each other and parallel to the alignment direction of the liquid crystal molecules.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: January 11, 2022
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 11209693
    Abstract: Provided is a liquid crystal display comprising: a liquid crystal cell; an upper polarizing plate provided on one surface of the liquid crystal cell and including a first polarizer and a low moisture-permeable film disposed on one surface of the first polarizer so as to face the liquid crystal cell; and a lower polarizing plate provided on the other surface of the liquid crystal cell and including a second polarizer, wherein a ratio of a shrinkage force in a direction parallel to the absorption axis of the second polarizer of the low moisture-permeable film to a shrinkage force in an absorption-axial direction of the second polarizer is 30% or more.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: December 28, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Jae Min Choi, Jin Yong Park, Sang Hyun Nah, Won Chul Lee, Jun Cheol Shin
  • Patent number: 11194250
    Abstract: A metal oxide photosensitive resin composition for forming a blue pattern layer includes scattering particles including a metal oxide having an average particle diameter of 30 to 300 nm, provided that the metal oxide photosensitive resin composition does not include quantum dots.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: December 7, 2021
    Assignee: Dongwoo Fine-Chem Co., Ltd.
    Inventors: Hyun Jung Wang, Ju Ho Kim, Hyung Joo Kim, Sung Hun Hong
  • Patent number: 11196016
    Abstract: A pixel structure includes a base substrate and a light emitting element on the base substrate. The light emitting element includes a reflective electrode, a light emitting layer on the reflective electrode, and a substantially transparent electrode on a side of the light emitting layer away from the reflective electrode. The reflective electrode has a reflective ridge configured to reflect light laterally transmitted through the light emitting layer to exit from a light emitting surface of the pixel structure. The reflective ridge has a first concave reflective sidewall extending from a peak of the reflective ridge to a base of the reflective ridge, and a second concave reflective sidewall extending from the peak of the reflective ridge to the base of the reflective ridge. The first concave reflective sidewall faces away from the second concave reflective sidewall.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: December 7, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Lujiang Huangfu, Xing Fan, Zheng Liu, Yan Fan, Liangjian Li, Hao Gao
  • Patent number: 11194190
    Abstract: The present application provides a display panel and a display device. The display panel includes an array substrate and a color filter substrate arranged oppositely, and a light source on a side of the color filter substrate facing the array substrate. The color filter substrate includes a first region and a second region. An orthogonal projection of the array substrate on the color filter substrate is in the first region, and the light source is in the second region.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: December 7, 2021
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolong Liu, Zhihui Wang, Changgong Zhu, Jianghong Wen, Keguo Liu, Xuefeng Wang, Yanli Zhao, Guang Wang, Di Wang, Yu Wang
  • Patent number: 11181789
    Abstract: A liquid crystal display device includes: a display panel; a light source which provides a light to the display panel; a light guide plate which receives the light from the light source on a surface thereof and guides the light to another surface thereof; a polarization member on a surface of the display panel facing the light guide plate; and a frame chassis comprising a fastening portion inserted in a space between the display panel and the light guide plate. The fastening portion has a thickness substantially equal to a thickness of the polarization member.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: November 23, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Luly Lee, Jaesang Lee
  • Patent number: 11175557
    Abstract: A transmittable lighting device is provided. The transmittable lighting device includes two substrates, a transmittable layer, two polarizers and a light source. The two substrates are respectively electrically connected to a voltage supply. A switchable electric field is provided between the two substrates, and two alignment directions of the two substrates are orthogonal to each other. The transmittable layer is located between the two substrates and has a plurality of liquid crystal molecules. Each of the plurality of liquid crystal molecule is arranged along the alignment direction of the substrate nearby, and the plurality of liquid crystal molecules is arranged in a 90-degree twisted arrangement. The two polarizers are located at two outer surfaces of the two substrates, respectively. Each polarizer has a polarization direction parallel to the alignment direction of the substrate on the same outer surface. The light source emits a lateral light entering the transmittable layer laterally.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: November 16, 2021
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Tsung-Hsien Lin, Cheng-Chang Li, Heng-Yi Tseng, Hung-Chang Jau, Li-Min Chang, Kuan-Wu Lin
  • Patent number: 11170478
    Abstract: To allow a better determination of an image of a different luminance dynamic range (in particular as characterised by a different maximum luminance a.k.a.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 9, 2021
    Assignee: Koninklijke Philips N.V.
    Inventor: Johannes Yzebrand Tichelaar
  • Patent number: 11163099
    Abstract: A light control film is disclosed that includes a plurality of spaced apart first regions. Each first region has a substantially low transmission in one or two of a first wavelength range from about 300 nm to about 400 nm, a second wavelength range from about 400 nm to about 700 nm, and a third wavelength range from about 700 nm to about 1200 nm, and a substantially high transmission in the remaining wavelength ranges. The light control film has a viewing angle of less than about 70 degrees along a predetermined first direction.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: November 2, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: John A. Wheatley, Gilles J. Benoit, Guanglei Du, Steven R. Anderson, Owen M. Anderson, David T. Yust, Rolf W. Biernath, Gary E. Gaides, Brian W. Lueck, Neeraj Sharma
  • Patent number: 11137603
    Abstract: Techniques disclosed herein relate generally to surface-relief structures. In one embodiment, a surface-relief grating includes a plurality of grating ridges. The plurality of grating ridges includes a first set of grating ridges characterized by a first refractive index, and a second set of grating ridges interleaved with the first set of grating ridges and characterized by a second refractive index different from the first refractive index. The plurality of grating ridges is imprinted in a polymer layer by a nanoimprint lithography process and is exposed to a light pattern to form the first set of grating ridges and the second set of grating ridges that have different refractive indices.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: October 5, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventor: Bo Zhang
  • Patent number: 11131890
    Abstract: The present disclosure discloses an LCD and a display device, and belongs to the field of display technologies. The LCD can include an LCD panel, a backlight module, a sealant, and a first polarizer. The backlight module is located at one side of the LCD panel. The first polarizer is located between the LCD panel and the backlight module. The backlight module has a first through hole thereon and the first polarizer has a second through hole thereon. The first through hole, the second through hole, and the LCD panel define a blind hole. The sealant is adhered to an inner wall of the blind hole, and the sealant is fixedly connected to the backlight module, the LCD panel, and the first polarizer by bonding.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: September 28, 2021
    Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
    Inventors: Lei Shi, Lei Tang, Jian Li
  • Patent number: 11086129
    Abstract: Methods and systems relating generally to information displays, and more particularly to systems and methods for backlight assemblies for information displays that emit an angularly narrow cone of light. A backlight assembly that emits a narrow angular cone of light can be particularly beneficial in a head-mounted display configuration, such as for use as part of virtual reality or augmented reality systems, where the head-mounted display comprises a lens assembly that directs light from an information display to the eyes of the user. Such a backlight assembly configuration may help reduce undesirable visual effects like flood illumination, ghost images, glare, and scattering.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: August 10, 2021
    Assignee: Valve Corporation
    Inventor: Joshua Mark Hudman
  • Patent number: 11088172
    Abstract: The present disclosure provides an array substrate and a manufacturing method thereof, a liquid crystal display panel, and a liquid crystal display apparatus, which can solve a problem that an independent backlight of the related liquid crystal display device is easy to cause light leakage, resulting in a thicker product. Both a light emitting structure and an array structure are disposed on the array substrate of the present disclosure, wherein a control device of the light emitting structure can control the light emitting source to emit light. That is, in the present disclosure, the light emitting structure is directly formed in the array substrate, which is equivalent to a built-in light emitting source, so that it is no longer necessary to adhere an external backlight, and no adhesive gap is generated to cause light leakage, and the thickness of the product can be reduced.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: August 10, 2021
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Le Sun, Zhengwen Pan, Zhongping Zhao, Ruijun Hao, Long Lian, Haifang Hu, Wulijibaier Tang, Tianlei Shi
  • Patent number: 11063243
    Abstract: There is provided a display apparatus that includes a plurality of light-emitting elements that constitutes pixels, a light guiding/scattering layer that is provided on the plurality of light-emitting elements and scatters light emitted from the plurality of light-emitting elements, and a reflection partition wall that separates portions of the light guiding/scattering layer corresponding to each of the pixels and reflects the light emitted from the plurality of light-emitting elements.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: July 13, 2021
    Assignee: SONY CORPORATION
    Inventor: Daisuke Ueda
  • Patent number: 11054569
    Abstract: According to one embodiment, the illumination device includes a first area, a second area, a first light guide, a plurality of first light sources, a second light guide, a plurality of second light sources, a first layer and a second layer. The first layer extends from the first area over a boundary between the first area and the second area, to between a second side surface of the first light guide and the boundary. The second layer extends from the second area over the boundary to between a third side surface of the second light guide and the boundary.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: July 6, 2021
    Assignee: Japan Display Inc.
    Inventors: Hiroaki Kijima, Shinichi Komura, Yoichi Asakawa, Ken Onoda
  • Patent number: 11029526
    Abstract: Provided are an optical unit and a display device that can appropriately perform reflection and transmission of image light emitted from a panel provided with a light emitting element, over a wide wavelength region in a dichroic mirror. The optical unit includes a first panel, a second panel, and a third panel arranged facing a first incident surface, a second incident surface, and a third incident surface of a dichroic prism, respectively, and each of the first panel, the second panel, and the third panel emits unpolarized image light. A polarization element is arranged between the first panel and the dichroic prism, and first image light emitted from the first panel is incident on the dichroic prism as linearly polarized light. A first dichroic mirror has polarization separation characteristics in addition to transmittance-wavelength characteristics.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: June 8, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Kunihiko Yano
  • Patent number: 11024659
    Abstract: An image sensor and a method of fabricating an image sensor are provided, the image sensor including a plurality of color filters spaced apart from each other on a semiconductor substrate; a protective layer covering sidewalls of the color filters and top surfaces of the color filters; and a low-refractive pattern filling a space between the color filters.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: June 1, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jaesung Hur, Youngtak Kim, Hajin Lim
  • Patent number: 11015830
    Abstract: A controller configured to provision on a surface of an environment includes a projector configured to project light for a user interface through an opening in the surface, wherein the projector is located on a first side of the surface. The controller includes a waveguide located within the opening of the surface, wherein the waveguide is configured to transmit the light from the projector through the opening in the surface. The controller further includes a direction element located on a second side of the surface, wherein the direction element is configured to direct the light from the projector to a user.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: May 25, 2021
    Assignee: Johnson Controls Technology Company
    Inventor: Joseph Mann
  • Patent number: 11009759
    Abstract: A transparent display panel, a method for fabricating the same, and a display device are disclosed, where the transparent display panel includes a light source, an optical waveguide, a first liquid crystal layer, a first group of electrode layers, and a color rendering component, wherein the optical waveguide is on a side of the first liquid crystal layer and has its first surface comes into contact with the first liquid crystal layer; the color rendering component is on another side of the first liquid crystal layer, and configured to render a color upon being excited by light emitted by the light source; the light source is on the side surface of the optical waveguide; and the first group of electrode layers is configured to provide the first liquid crystal layer with an electric field.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: May 18, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Wei Wei
  • Patent number: 11009648
    Abstract: To achieve more natural image expression. A display device (1) is provided with a light guide plate (4) which displays a predetermined image having a tone caused by changing the amount of light emitted from each of pixel regions including one or more light exit structures (43), and the amount of light emitted from the pixel regions displaying the tone in a predetermined range is randomly set so as to be a first light amount value or a second light amount value greater than the first light amount value.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 18, 2021
    Assignee: Omron Corporation
    Inventors: Yoshihiko Takagi, Jun Kishimoto, Takahiro Morichi
  • Patent number: 11009642
    Abstract: The present invention relates to a polarizing plate including a polarizer and a polyester film formed on an upper side of the polarizer, wherein the polyester film has a maximum thermal shrink angle of about 10° or less, and any one of a refractive index of x-axis direction nx at a wavelength of 550 nm and a refractive index of y-axis direction ny at a wavelength of 550 nm of about 1.65 or more; a method of preparing the polarizing plate; and a liquid crystal display apparatus comprising the polarizing plate.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: May 18, 2021
    Assignee: SAMSUNG SDI CO., LTD
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 10996711
    Abstract: A display device includes a display panel including a display surface in which an active area configured to display an image and a peripheral area disposed adjacent to the active area are defined, a light source configured to provide a light to the display panel, an optical member disposed between the light source and the display panel, a light blocking layer covering a side surface of the optical member, a support member supporting the optical member, and an intermediate protective member disposed between the display panel and the light source to support the display panel. The support member is supported by the intermediate protective member.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: May 4, 2021
    Inventors: Young-Rok Oh, Minsu Jung, Mansoo Kim, Byung Jin Park
  • Patent number: 10989840
    Abstract: Embodiments described herein relate to nanostructured trans-reflective filters having sub-wavelength dimensions. In one embodiment, the trans-reflective filter includes a film stack that transmits a filtered light within a range of wavelengths and reflects light not within the first range of wavelengths. The film stack includes a first metal film disposed on a substrate having a first thickness, a first dielectric film disposed on the first metal film having a second thickness, a second metal film disposed on the first dielectric film having a third thickness, and a second dielectric film disposed on the second metal film having a fourth thickness.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 27, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Tapashree Roy, Rutger Meyer Timmerman Thijssen, Robert Jan Visser
  • Patent number: 10983626
    Abstract: Display layers and touch sensor layers may be overlapped by enclosure walls in an electronic device. The electronic device may have a front wall and opposing rear wall and curved sidewalls. The front wall and the curved sidewalls may be formed from a glass layer or other transparent member. A touch sensor layer and display layer may extend under the glass layer with curved sidewalls. A touch sensor layer may also extend under the opposing rear wall. A foldable electronic device may have a flexible transparent wall portion that joins planar transparent walls. Components may be interposed between the transparent planar walls and opaque walls. Display and touch layers may be overlapped by the transparent walls and the transparent flexible wall portion. Touch sensor structures may also be overlapped by the opaque walls.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: April 20, 2021
    Assignee: Apple Inc.
    Inventors: Isaac W. Chan, Chun-Hao Tung, Fletcher R. Rothkopf, Sunggu Kang, John Z. Zhong
  • Patent number: 10976610
    Abstract: A display device including an optical member, a display panel disposed above the optical member, and a plurality of light emitting units disposed below the optical member and providing a first color light to the optical member. The optical member may include a glass substrate containing an upper surface and a lower surface facing each other in a thickness direction and overlapping the plurality of light emitting units in a plan view, and a quantum dot layer disposed directly on the upper surface or the lower surface and converting the first color light into a second color light and a third color light.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: April 13, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kang-min Kim, Namheon Kim, Taegyun Kim, Joohwan Park, Jinho Park, Dongil Son, Donghee Lee, Baekhee Lee, Kyungtae Chae
  • Patent number: 10976563
    Abstract: Provided is an optical unit and a display device capable of suppressing the occurrence of stray light by suppressing the incidence of light onto a peripheral region of a panel. In the optical unit, a first panel, a second panel, and a third panel are arranged to face a dichroic prism. A first light-emitting element is provided in a display region of the first panel, the second panel, and the third panel, and metal wiring is provided in a peripheral region. Here, a light shielding layer is provided between the dichroic prism and the peripheral region of each of the first panel, the second panel, and the third panel. Thus, even when a part of color light that should be reflected passes through a dichroic mirror, the leaked light is absorbed by the light shielding layer.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: April 13, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 10962834
    Abstract: According to one embodiment of the present disclosure, an optical filter which makes light pass therethrough includes a first layer configured to polarize the light; a second layer disposed directly on a first surface of the first layer and to make only light with a first wavelength band pass therethrough; and a color conversion layer disposed on the first layer, to receive the light, and to convert the light with the first wavelength band into light with a second wavelength band.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: March 30, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung Yong Kang, Seung Beom Park, Beong Hun Beon
  • Patent number: 10948632
    Abstract: In a light beam direction control element having: light transmitting regions made of light transmitting material arrayed on a substrate; and a light absorbing region made of light absorbent material filling a gap between the light transmitting regions, the light absorbing region restricting a light beam direction of light passing through the substrate, the light absorbing region extends in first and second directions that form a right angle to each other in a substrate plane. The light beam direction control element further has: a crossing portion where the light absorbing region extending in the first direction and the light absorbing region extending in the second direction cross each other to form an L or T shape; and at least one structure dividing the light absorbing region, located on a region which is other than the crossing portion and where the light absorbing region extends in the first or second directions.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: March 16, 2021
    Assignee: TIANMA MICROELECTRONICS CO., LTD.
    Inventor: Mamoru Okamoto
  • Patent number: 10943956
    Abstract: The present invention provides a display panel and a manufacturing method thereof. The display panel comprises a blue organic light-emitting diode (OLED) layer, a thin film encapsulation layer, and a quantum dot color film layer, wherein a serrated encapsulation layer disposed on a side surface of the quantum dot color film layer near the thin film encapsulation layer. The method for manufacturing the display panel comprises a quantum dot color film layer manufacturing step, a serrated encapsulation layer manufacturing step, a blue OLED layer manufacturing step, and a thin film encapsulation layer manufacturing step. The technical effect of the present invention is that the serrated encapsulation layer is disposed on a surface of the quantum dot color film layer, so that blue light is refracted, optical path of blue light in the quantum dot layer is increased, and light conversion efficiency of blue light is improved.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: March 9, 2021
    Assignee: SHENZHEN CHINA STAR OPTOELECTONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Wenxiang Peng
  • Patent number: 10928678
    Abstract: A liquid crystal display device includes a light source member and a display panel disposed on the light source member. The display panel includes a first substrate and a second substrate facing each other, a liquid crystal layer, and a color conversion layer that is disposed between the liquid crystal layer and the first substrate. The color conversion layer includes a light emitter and a low refractive body having a refractive index of about 1.0 to about 1.3. The liquid crystal display device exhibits high color reproducibility and improves external light extraction efficiency.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: February 23, 2021
    Inventors: Kwangkeun Lee, Youngmin Kim, Haeil Park, Moonjung Baek, Seon-tae Yoon, Kunhee Jo
  • Patent number: 10928046
    Abstract: Light boards including one or more light emitting elements (e.g. light emitting diode (LED) devices) for use in lighting fixtures are disclosed. In one example implementation, a light board includes a first layer having a first surface and an opposing second surface. The light board includes one or more light emitting elements disposed on the first surface of the first layer. The light board includes one or more circuit elements located on the second surface of the first layer. The one or more circuit elements are associated with powering the one or more light emitting elements. The light board includes a second layer disposed on the second surface of the first layer such that the one or more circuit elements are located between the second surface of the first layer and the second layer.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: February 23, 2021
    Assignee: Hubbell Incorporated
    Inventors: Thomas N. Clawson, Derek Bruce Baker
  • Patent number: 10923014
    Abstract: A liquid crystal display device comprises: a first display panel displaying a color image; a second display panel displaying a monochrome image; and an image processor generating first image data corresponding to the color image and second image data corresponding to the monochrome image based on an input video signal. The image processor generates the first image data and the second image data such that a graph representing transmittance of the first display panel for input gradation corresponding to the input video signal and a graph representing transmittance of the second display panel for the input gradation corresponding to the input video signal intersect each other at predetermined input gradation.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: February 16, 2021
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.
    Inventors: Toshikazu Koudo, Masahiro Ishii, Katsuhiro Kikuchi, Ikuko Mori
  • Patent number: 10923047
    Abstract: Backlight constant current driver board comprises boost circuit, constant current control circuit, switchover switch circuit, and light strip socket, connects to backlight light strip via light strip socket. Boost circuit boosts input voltage before outputting output voltage and transmits via light strip socket as power supply to backlight light strip. Switchover switch circuit controls, according to PWM signal and power supply voltage, connection or disconnection of current loop between backlight light strip and ground. Constant current control circuit monitors and keeps constant current magnitude of backlight light strip in switchover switch circuit. By switchover switch circuit, during system standby, formation of current loop between backlight light strip and ground is prevented so backlight light strip does not emit light, thus solving problems of screen emitting dim lights when existing LCD television standby or constant current drive control chip not working.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: February 16, 2021
    Assignee: SHENZHEN CHUANGWEI-RGB ELECTRONIC CO., LTD.
    Inventor: Yawei Li
  • Patent number: 10914983
    Abstract: Disclosed herein are a backlight unit and a display device using the same. In an embodiment, the backlight unit includes a substrate, at least one light source on the substrate, a lenses placed over the light source, a reflection sheet in which at least one through hole corresponding to the lens is formed, and a reflection ring comprising an opening portion corresponding to the at least one light source, and placed between the lens and the substrate. In accordance with an embodiment of the present invention, luminance uniformity of the backlight unit can be improved because the reflection ring surrounding the light source is included.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: February 9, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyungjoon Lee, Uihyung Lee, Juyoung Joung, Wondo Kee, Minho Kim, Wongjoon Hwang, Jaeyoon Jeong, Bohee Kang, Manhyuck Han, Jiu Myeong
  • Patent number: 10901263
    Abstract: A display screen, a terminal, and a backlight system, where the backlight system includes a substrate, a plurality of spot light sources, an optical conversion layer, and a light mixing member, where the spot light sources are fastened onto the substrate in a mutually spaced manner. The optical conversion layer is stacked on the substrate and covers the spot light sources. The optical conversion layer is configured to convert, into a white surface light source, light emitted by the spot light sources. The light mixing member is located on a surface of the optical conversion layer or embedded into the optical conversion layer. The light mixing member is configured to mix the light. The backlight system emits light evenly and has a relatively small thickness.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: January 26, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Dapeng He, Dong Chen, Shihong Ouyang
  • Patent number: 10901136
    Abstract: A liquid crystal display device provided with a liquid crystal display panel having a pair of transparent substrates disposed to face with each other via a liquid crystal layer, and a backlight unit disposed on a back surface of the liquid crystal display panel for radiating a backlight ray is configured to have a plate member opposite a side wall surfaces of the liquid crystal display panel and a side wall surfaces of the backlight unit. The plate member is fixed to the side wall surface of the liquid crystal display and the side wall surface of the backlight unit.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: January 26, 2021
    Assignee: Japan Display Inc.
    Inventor: Eiji Oohira
  • Patent number: 10890709
    Abstract: In one embodiment, an overhead street light (a luminaire) is formed that has an asymmetric light intensity distribution, where the peak intensity is greatest along the direction of the street, lower directly across the street, and much lower on the house side of the street. Around the edge of a circular transparent light guide are white light LEDs that inject light into the light guide. To help control the asymmetry of the light intensity distribution, sawtooth-shaped grooves are formed in the light guide surface opposite to the light-emission surface and parallel to the street. Gaussian diffusers are used to partially diffuse the light. By proper selection of the grooves, the Gaussian diffuser, and the relative amounts of light emitted by LED segments around the light guide, the desired asymmetrical light intensity distribution is achieved while a direct view of the light exit surface appears as a uniform light.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: January 12, 2021
    Assignee: Lumileds LLC
    Inventors: Frederic S. Diana, Gregory Guth, Jeroen Den Breejen, Iain Black
  • Patent number: 10884268
    Abstract: A system and method providing correlated color temperature-tunable (CCT-tunable) white light using a laser diode(s) in conjunction with a III-Nitride nanowires-based LED element grown on a semi-transparent substrate. The tunability spans across yellow, amber, and red wavelengths and can be implemented by current injection. The current-dependent broad wavelength tunability enables control of wide range of CCT values (intensity, peak wavelength, and spectral coverage). The broad coverage in the yellow-amber-red color regime mimics that of a passive yellow phosphor, while the injection of current into the LED element defines an active phosphor element. The semi-transparent active phosphor element allows direct transmission of light from a laser diode(s) for achieving extreme wide tunability of CCT.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: January 5, 2021
    Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Boon S. Ooi, Aditya Prabaswara, Bilal Janjua, Tien Khee Ng
  • Patent number: 10867563
    Abstract: A display device includes a display panel; a frame at a rear of the display panel, the frame including a first and a second protrusions; a first substrate at a front surface of the frame, the first substrate elongated in a direction along a first side of the frame; a plurality of first light sources disposed on the first substrate at predetermined intervals in the direction. Further, the first protrusion is positioned at an end of the first substrate adjacent to the foremost light source in the first substrate, and the second protrusion is positioned at an end of the first substrate adjacent to the rearmost light source in the first substrate, at least one of the first and the second protrusions includes an inclined surface and the frame is pressed to form the first and the second protrusion such that the protrusions are formed on the front surface of the frame.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: December 15, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangmin Baek, Hyongil Kil, Jaehyung Jeon, Juyoung Joung
  • Patent number: 10867567
    Abstract: A liquid crystal device includes, peripheral electrodes including three electrodes for ion trapping, and a transistor coupled to each of the three electrodes. A common signal (COM signal) that varies between a first potential and a second potential in a first period is applied to a counter electrode. A driving signal that varies between a third potential and a fourth potential is input to the transistor. The driving signal is coupled to or uncoupled from the peripheral electrodes by the transistor in a unit of a duration equal to or less than ½ of the first period. AC signals varying between a positive-polarity potential and a negative-polarity potential, with a potential of the common signal being a reference, in a second period longer than the first period, are applied to the three electrodes of the peripheral electrodes, in a state where phases of the AC signals are shifted mutually.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: December 15, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Satoshi Yatabe, Naoki Tomikawa