Particular Application Patents (Class 362/602)
  • Patent number: 12093471
    Abstract: A touchpad and a backlight module are provided. The backlight module includes a circuit board, a first light emitting element and a second light emitting element respectively located on two surfaces of the circuit board, a bottom layer, and a second light guide plate having a second microstructure, a middle layer having a light transmitting region and a first light guide plate having a first microstructure sequentially disposed on the bottom layer. A position of the second microstructure corresponds to the light transmitting region. An area of the light transmitting region of the middle layer is smaller than or equal to an area of the first microstructure. The first light emitting element corresponds to a side surface of the first light guide plate. The second light emitting element corresponds to a side surface of the second light guide plate.
    Type: Grant
    Filed: June 19, 2023
    Date of Patent: September 17, 2024
    Assignee: Chicony Power Technology Co., Ltd.
    Inventor: Chen-Hao Chiu
  • Patent number: 11982828
    Abstract: A display device includes a light guide plate, a cover lens, a first optical layer, a second optical layer and a display. The light guide plate has a first surface and a second surface opposite to the first surface. The cover lens is disposed on the first surface of the light guide plate. The first optical layer is disposed between the first surface and the cover lens. The second optical layer is disposed between the first surface and the first optical layer. For visible light, a light absorption rate of the first optical layer is larger than or equal to a light absorption rate of the second optical layer. The display is disposed on the second surface of the light guide plate.
    Type: Grant
    Filed: February 17, 2023
    Date of Patent: May 14, 2024
    Assignee: E Ink Holdings Inc.
    Inventor: Chien-Hsing Chang
  • Patent number: 11977298
    Abstract: Provided is an illumination device that makes it possible to enhance utilization efficiency of light, and a display device that includes the illumination device. The illumination device includes: a light source that is configured to generate light of a first wavelength; a luminescent body that is configured to wavelength-convert the light of the first wavelength to light of a second wavelength, the second wavelength being different from the first wavelength; and a wavelength selective filter that is provided on a light-incident side of the luminescent body, the wavelength selective filter being configured to transmit the light of the first wavelength and to reflect the light of the second wavelength.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: May 7, 2024
    Assignee: SATURN LICENSING LLC
    Inventor: Hirohisa Ishino
  • Patent number: 11867365
    Abstract: An LED luminaire having a housing positionable at a structure location for providing illumination. At least one first LED light engine is located within the housing. The housing has at least one light output boundary and is configured to direct light therein toward the light output boundary. A light guide is configured to be located at the light output boundary to receive light contained within the housing to emit non-directional light at the light output boundary. The at least one first LED light engine includes at least one first LED light source providing directional light at the light output boundary. The first LED light engine includes a shroud adjacent the light guide providing directional light from the LED light source to a target location beyond the luminaire. The shroud structure provides an optical path from the LED light source through the light guide for providing non-directional light.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: January 9, 2024
    Assignee: AXIS LIGHTING INC.
    Inventors: Howard Yaphe, Andrew Miles, Giuseppe Caluori, Alejandro Mier-Langner, Cedric Stevenin, Jeffery Robert Parker, Frank Shum, Yupin Sun, Don Peifer
  • Patent number: 11857299
    Abstract: A wearable heart activity sensor device includes a substrate of optically transparent material arranged to face a skin of a user when the sensor device is worn by the user, at least one light emitting diode, LED, arranged on the substrate and arranged to emit light through the substrate, at least one photo sensor arranged on the substrate as spatially separated from the at least one LED and arranged to absorb light through the substrate, wherein the at least one LED and the at least one photo sensor are included in a photoplethysmogram sensor of the heart activity sensor device, and an overmold of thermoplastic material covering the at least one light emitting diode, the at least one photo sensor and a space between the at least one light emitting diode and the at least one photo sensor.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: January 2, 2024
    Assignee: Polar Electro Oy
    Inventors: Veli-Pekka Putila, Elias Pekonen
  • Patent number: 11828432
    Abstract: The present invention relates to a light-guiding assembly having a first light-guiding element, which is allocated to a first light source and used to receive and guide light from the first light source, and is provided with a first light incidence portion, a first light exit portion, and a first intermediate optical portion that is arranged between them. A second light-guiding element, which is allocated to a second light source and used to receive and guide light from the second light source, and is provided with a second light incidence portion, a second light exit portion, and a second intermediate optical portion that is arranged between them. Wherein the first light exit portion faces the second intermediate optical portion, and light leaving the first light exit portion can pass through the second intermediate optical portion and exit from the second light exit portion.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: November 28, 2023
    Assignee: Valeo Vision
    Inventors: Yakun Zhao, Piao Zhang, Xiaoyong Zhu, Xiao Ning, Huai Shu, Fanrui Wu
  • Patent number: 11642546
    Abstract: An LED facial mask incorporates a transparent light guide which distributes therapeutically useful frequencies of light over the skin of a user's face. Further, a USB connection port provides power. Alternate embodiments incorporate the mask device into alternate forms of wearable devices.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: May 9, 2023
    Assignee: Shanghai Edge Light Industry CO., LTD
    Inventor: Wenhui Dai
  • Patent number: 11645940
    Abstract: This disclosure describes a keyboard that is selectively configurable in a testing mode, where characters are not visible on a set of touch-based input receivers of the input device, a training mode, where characters are visible on some but not all of the set of touch-based input receivers of the input device, and a standard mode, where characters are visible on all of the set of touch-based input receivers of the input device. This disclosure also describes techniques for manufacturing the input device and illuminating characters via the touch-based input receivers. The described keyboard improves on conventional input devices by allowing selection of one or more touch-based input receivers for which characters are illuminated, or selection of a testing mode where a user cannot see characters on any of the touch-based input receivers.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: May 9, 2023
    Assignee: KEYMASTER ELECTRONICS LLC
    Inventor: Kelly Seale
  • Patent number: 11640081
    Abstract: Embodiments of the present disclosure provides a backlight module and a display device. The backlight module includes a backboard and a reflecting sheet located on the backboard; the reflecting sheet includes a body and a plurality of hollow areas, wherein the body surrounding at least one of the hollow areas is provided with one or more openings.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: May 2, 2023
    Assignees: K-TRONICS (SUZHOU) TECHNOLOGY CO., LTD., BOE Technology Group Co., Ltd.
    Inventors: Zhongcheng Li, Zhifu Zheng
  • Patent number: 11506447
    Abstract: A refrigerator including a storage chamber. The refrigerator also includes a first sidewall and a second sidewall arranged to form at least a portion of both side surfaces of the storage chamber. The refrigerator further includes a light source arranged on the first sidewall to illuminate an inside of the storage chamber. The refrigerator also includes a light guide member provided inside the storage chamber and formed to extend between the first sidewall and the second sidewall to guide light emitted from the light source. The light guide member includes an incident surface arranged to face the first sidewall and an exit surface through which the light guided by the light guide member is emitted to an outside of the light guide member.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: November 22, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myoungjin Jang, Jiyong Park, Jinhong Yu, Seungjae Lee, Jisick Hwang
  • Patent number: 11466823
    Abstract: A light box includes a light passing cover printed with an image. The image is being logically divided into two-dimension blocks. The light box includes multiple light tubes. Each light tube includes a tubular housing, an elongated LED bar, and a controller. The elongated LED bar is being enclosed by the tubular housing. The elongated LED bar has multiple LED modules divided into multiple LED sections. The multiple light tubes is being disposed behind the image of the light passing cover. The multiple LED sections of multiple light tubes is being corresponding to the two-dimension blocks of the image respectively. The controller controls the multiple LED sections separately according to a stored script. The stored script indicate a timing sequence for controlling the multiple LED sections for illuminating the two-dimension blocks of the image according to the stored script.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: October 11, 2022
    Assignee: XIAMEN LEEDARSON LIGHTING CO. LTD
    Inventors: Qingyue Liao, Liangliang Cao
  • Patent number: 11454754
    Abstract: A device includes a housing; a substrate provided inside the housing; a light emitting object mounted on one side of the substrate; and an elastic sheet covering the one side of the substrate and the light emitting object, to guide light from the light emitting object. A through hole is formed in the housing corresponding to the one side of the substrate. The elastic sheet has a mirror part at a portion on the surface corresponding to the through hole, for totally reflecting light transmitting through an inside of the elastic sheet.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: September 27, 2022
    Assignee: ALPS ALPINE CO., LTD.
    Inventor: Kazuyoshi Yamagata
  • Patent number: 11342522
    Abstract: A white-light QLED component, comprising: a transparent substrate, an anode layer, a HI layer, a HT layer, an emission layer, an ET layer, and a cathode layer. The emission layer is incorporated with a plurality of yellow QDs and a plurality of blue QDs, wherein the yellow QDs and the blue QDs have a mixing ratio in a range between 1:4 and 1:8. Experimental data have revealed that, a color temperature of a white light radiated from the white-light QLED component is modulatable by adjusting the weight percent of the yellow QDs in the emission layer, such that the QLED component can be decided to provide a cold white light, a pure white light or a warm white light. It can also control the white-light QLED component to optionally emit cold white light, pure white light or warm white light by modulating a bias voltage.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: May 24, 2022
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Hsueh-Shih Chen, Shuan Yang
  • Patent number: 11325283
    Abstract: A light assembly and method of forming light assemblies includes a flexible light layer, a thermoplastic housing, and an IMC layer. The flexible light layer has a flexible substrate, a printed circuit, and a plurality of LEDs extending outward from the flexible substrate. The IMC layer is formed opposite the flexible light layer from the thermoplastic housing and covers the LEDs. Forming may include placing the flexible light layer within a mold cavity, injecting the thermoplastic structure on one side of the flexible light layer, and injecting the IMC layer on the opposite side of the flexible light layer from the thermoplastic structure. Injecting the thermoplastic structure into the mold cavity may change the shape of the flexible light layer. Datum features of the flexible light layer may align the thermoplastic structure relative to the datum features.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: May 10, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Julien P. Mourou, Bradley J. Tice
  • Patent number: 11294115
    Abstract: An enhanced light diffusion film structure includes a first substrate, a second substrate, a first light guide diffusion layer and a second light guide diffusion layer. The first light guide diffusion layer includes a first light guide diffusion material having a first degree of light guide diffusion to guide and diffuse incident light exited by the first substrate to form first-stage guided and diffused light. The second light guide diffusion layer includes a second light guide diffusion material having a second degree of light guide diffusion to further guide and diffuse the first-stage guided and diffused light exited by the first light guide diffusion layer to form second-stage guided and diffused light. The first degree of light guide diffusion of the first light guide diffusion material is relatively higher or lower than the second degree of light guide diffusion of the second light guide diffusion material.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: April 5, 2022
    Assignee: WAH HONG INDUSTRIAL CORP.
    Inventors: Chih-Chen Wu, I-Feng Lin, Ching-Wen Yu
  • Patent number: 11285790
    Abstract: A transparent roof assembly for a vehicle roof comprises a panel with a transparent area, a light source arranged to provide light into the panel and an out-coupling pattern arranged on the surface of the transparent area of the panel. The out-coupling pattern comprises dots of a light-redirecting material for out-coupling of light introduced into the panel and propagating in the panel, wherein the dots each have a representative diameter of 150 microns or less, preferably 80 microns or less and wherein a total dot surface area of the dots of the out-coupling pattern is smaller than 10% of a total surface area of the transparent area. Thus, the transparent area appears transparent during daytime looking from an interior of the vehicle to an exterior of the vehicle, while sufficient light is provided into the interior when the light source is switched on.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: March 29, 2022
    Assignee: INALFA ROOF SYSTEMS GROUP B.V.
    Inventors: Theodorus van Doleweerd, Sergej Sergeevi{hacek over (c)} Lojko
  • Patent number: 11282993
    Abstract: A display device is provided, including a display panel; a light-emitting element disposed under the display panel; an optical functional film disposed between the display panel and the light-emitting element. The optical functional film is capable of transmitting at least part of the light emitted from the light-emitting element. A diffuser film is disposed between the display panel and the light-emitting element. The haze of the diffuser film is greater than 85%, and the thickness of the diffuser film ranges from 0.1 mm to 0.3 mm.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: March 22, 2022
    Assignee: INNOLUX CORPORATION
    Inventors: Chia-Lun Chen, Shih-Chang Huang, Ming-Hui Chu, Chih-Chang Chen, Kai-Hsien Hsiung, Hui-Chi Wang, Wun-Yuan Su
  • Patent number: 11262063
    Abstract: A system and method for a light panel assembly which is particularly useful for commercial horticultural applications. An extruded heat sink frame provides for a layered light panel assembly with superior heat dissipation characteristics and low power requirements while providing highly efficient returns and output radiant flux.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: March 1, 2022
    Assignee: LIGHT SOURCE ENGINEERING LLC
    Inventors: Christopher Wolfe, Christopher Brown, David Benschemer, Mike Friedman
  • Patent number: 11137665
    Abstract: A device includes a light-emitting device (LED) having at least two vertical light-emitting sides, and a ring-shaped light guide having a bottom side, a top side comprising a light-emitting surface, an inner sidewall, and an outer sidewall defining an indentation having at least two vertical in-coupling surfaces mated to the at least two vertical light-emitting sides of the LED.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: October 5, 2021
    Assignee: Lumileds LLC
    Inventors: Varun Dev Kakkar, Arjen Van Der Sijde, Erno Fancsali, Chunxia Feng, Nicola Pfeffer
  • Patent number: 11131878
    Abstract: A display device includes: a display panel including a plurality of display elements; a window member disposed on the display panel; and a plurality of first light conversion members that convert the path of light emitted from the display elements and whose cross sections are about 450 nm to about 950 nm in diameter, wherein the first light conversion members directly contact a surface of the window member.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: September 28, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Ho Lim
  • Patent number: 11069841
    Abstract: A multilayer ceramic converter with stratified scattering is disclosed. In an embodiment a ceramic wavelength converter assembly having a layered structure includes a phosphor layer, an upper barrier layer, and a lower barrier layer, wherein the phosphor layer is at least partially disposed between the upper barrier layer and the lower barrier layer.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: July 20, 2021
    Assignee: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Thomas Dreeben, Zhengbo Yu, Alan Lenef
  • Patent number: 11040653
    Abstract: A track assembly includes a track, a transmitter unit, a support member, and a receiver unit. The transmitter unit may be connected to the track, and/or the support member may be configured for connection with the track. The receiver unit may be connected to the support member and/or may be configured to receive light from the transmitter unit. The track assembly may include a first electronic control unit that may be connected to the transmitter unit. The first electronic control unit may be configured to control the transmitter unit. The transmitter unit may include a light source, and/or the transmitter unit may be configured to transmit light from the light source into the track. The transmitter unit may be configured to transmit visible light and/or non-visible light. The track assembly may include a second electronic control unit.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: June 22, 2021
    Assignee: Lear Corporation
    Inventors: Raúl Ricart, Antoni Ferré Fàbregas
  • Patent number: 11003051
    Abstract: A device includes a light-emitting device (LED) having at least two vertical light-emitting sides, and a ring-shaped light guide having a bottom side, a top side comprising a light-emitting surface, an inner sidewall, and an outer sidewall defining an indentation having at least two vertical in-coupling surfaces mated to the at least two vertical light-emitting sides of the LED.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 11, 2021
    Assignee: Lumileds Holding B.V.
    Inventors: Varun Dev Kakkar, Arjen Van Der Sijde, Erno Fancsali, Chunxia Feng, Nicola Pfeffer
  • Patent number: 10946786
    Abstract: A lighting device for a motor vehicle, the lighting device including a vehicle stop-lamp assembly and a cargo-lamp assembly. The lighting device includes a common lens that is configured, on the one hand, to form at least one stop-lamp light beam and, on the other hand, to form at least one cargo-lamp light beam. It furthermore includes a first group of light sources that are configured to emit stop-lamp light beams and a second group of light sources that are configured to emit cargo-lamp light beams, the light sources of the first group and of the second group being arranged on a common electronic holder.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 16, 2021
    Assignee: VALEO VISION BELGIQUE
    Inventors: Alexandre Franc, Arthur-Guillaume Renaudeau, Yves Dubois
  • Patent number: 10890308
    Abstract: The present invention relates to a car lamp (or a vehicle lamp) and a control method thereof, and more particularly, a vehicle lamp using a semiconductor light emitting device. The present invention provides a lamp including a half mirror having an upper surface and a lower surface and configured to reflect a part of light incident on the lower surface and another part to be discharged to outside, a reflector located below the half mirror in a manner of facing the lower surface of the half mirror, and a plurality of light sources located between the half mirror and the reflector to emit light toward the half mirror, wherein the half mirror and the reflector are located to be spaced apart from each other by a predetermined distance such that the light emitted from each of the light sources is repeatedly reflected by the half mirror and the reflector.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: January 12, 2021
    Assignee: ZKW Group GmbH
    Inventors: Mongkwon Jung, Joongtaek Cha
  • Patent number: 10876726
    Abstract: An aircraft mirror assembly includes a light source, a front cover, and a light guide. The front cover is semi-transparent, the light source is arranged adjacent to an edge of the light guide, and the light guide is arranged adjacent to the front cover. In various aspects, the front cover includes an illumination zone, and, in an activated configuration, the light guide is configured to direct light from the light source to the illumination zone such that light is directed through the illumination zone. In certain aspects, the front cover includes an indicator, and, in an activated configuration, the light guide is configured to direct light from the light source to the indicator such that the indicator is activated. In various examples, the aircraft mirror assembly is provided with an aircraft cabin assembly positionable in a cabin of an aircraft.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: December 29, 2020
    Assignee: Zodiac Cabin Controls GmbH
    Inventors: Volker Antonczyk, Henrik Heine, Lutz Neumann
  • Patent number: 10866459
    Abstract: Backlight module and display device are provided. The backlight module includes: a light-emitting area, a non-light-emitting area, at least one notch, a shell, a light source, and a light guide plate, wherein the light-emitting area includes a first edge and a second edge; the first edge includes a sub-edge; the light source is on at least one side of the light guide plate; the light-emitting area includes at least one compensation area adjacent to the notch, and the compensation area is on a side of the notch away from the light source; the light guide plate includes a first portion and a second portion, and the first portion is in the compensation area; a thickness of the first portion is greater than a thickness of the second portion; and a plurality of protrusions is on a side surface of the first portion facing toward the back plate.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: December 15, 2020
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Yatao Wang
  • Patent number: 10854782
    Abstract: A Light emitting diode (LED) includes a mesa structure, a light emitting source within the mesa structure, and a primary emission surface on a side of the LED opposed to a top of the mesa structure. The light emitting source is configured to emit light anisotropically in a first direction perpendicular to a second direction of emission of the light from the LED at the primary emission surface.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: December 1, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Vincent Brennan, Christopher Percival, Padraig Hughes, Allan Pourchet, Celine Claire Oyer
  • Patent number: 10845641
    Abstract: A direct backlight module is disclosed, and includes: a substrate having a driving circuit layer; multiple blue LED chips disposed on the substrate, and the multiple blue LED chips are electrically connected to the driving circuit layer; an optical conversion layer covered on the multiple blue LED chips, wherein the optical conversion layer includes a colloidal material, multiple phosphor particles and multiple haze particles disposed in the colloidal material, the optical conversion layer converts a blue light emitted from the multiple blue LED chips into a white light; and a transparent dielectric layer and a metal grating layer sequentially formed on the optical conversion layer. A liquid crystal display device is also disclosed. The direct backlight module can reduce the thickness of the liquid crystal device, which is beneficial to realize a thin and narrow-frame liquid crystal display device.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: November 24, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Guowei Zha, Hongqing Cui
  • Patent number: 10823391
    Abstract: A mirror assembly includes a frame, a mirror platform, a light emitting element, a light guide, an interior reflective surface, and a back plate. The mirror platform includes a central reflective portion and a translucent portion. The light emitting element is retained within the frame and driven by a driver. The light guide plate is disposed adjacent the light emitting element and includes two opposed major surfaces that propagate light along the light guide plate. The interior reflective surface is disposed adjacent a rear major surface of the light guide plate. The back plate is affixed to the frame, securing the mirror platform, the light emitting element, the driver, the light guide, and the interior reflective surface therebetween.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: November 3, 2020
    Assignee: Hubbell Incorporated
    Inventors: Will Thomas, Linkoln Dixon, David Simoni, Jared Davidson
  • Patent number: 10775019
    Abstract: A vehicle lighting device including an optical element having a controlled caustic generator surface so as to propagate a pattern over a usable range, a mounting part on which is intended to be mounted a beam generator of rays incident on the generator surface, the optical element being such that the propagated pattern is projected onto a target surface, visible from the exterior of the lighting device and situated in the usable range.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: September 15, 2020
    Assignee: VALEO VISION
    Inventor: Jerome Le Corre
  • Patent number: 10778800
    Abstract: A system and method for propagating content throughout a network using a mobile environment. For example, one embodiment of a system comprises: a plurality of mobile caches deployed on a plurality of transportation vessels/vehicles; a plurality of edge caches deployed at which the transportation vessels/vehicles are expected to pass, the plurality of edge caches coupled over a first communication channel to source caches and temporarily coupled to the mobile caches over a second communication channel; and first cache management logic to identify first multimedia content stored on the first edge cache and not on the first mobile cache and second multimedia content stored on the first mobile cache and not on the first edge cache, and to transmit the first multimedia content from the first edge cache to the first mobile cache and to transmit the second multimedia content in reverse direction while the second communication channel is available.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: September 15, 2020
    Assignee: NETSKRT SYSTEMS, INC.
    Inventor: Siegfried Luft
  • Patent number: 10734464
    Abstract: A display for virtual reality is discussed, which is capable of alleviating a screen-door effect, thereby improving its image quality. In the display for virtual reality, a light diffusion member, which diffuses light emitted from a light-transmitting area of a display panel to a light-blocking area of the display panel, is interposed between the display panel and an optical lens, whereby a user who views an image displayed on the display panel at a very close position does not perceive the light-blocking area, which improves the image quality of the display.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: August 4, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Woong-Jin Seo, Tae-Yong Park
  • Patent number: 10732770
    Abstract: An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device can include an optical waveguide, an emitter, and an emitter coupler. The emitter produces optical beams, and the emitter coupler is on a surface of the waveguide and is configured to direct at least some of the optical beams to propagate via total internal reflection (TIR) through the waveguide as coupled optical beams. Touches on the top surface of the waveguide disturb the coupled optical beams, and the touch-sensitive device determines touch events based on the disturbances.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: August 4, 2020
    Assignee: Rapt IP Limited
    Inventor: Owen Drumm
  • Patent number: 10705278
    Abstract: A backlight unit may include a light source, a light guide plate configured to guide light emitted from the light source, a light conversion layer on the light guide plate, and a reflective pattern layer between the light guide plate and the light conversion layer, the reflective pattern layer including a plurality of holes. The light conversion layer absorbs at least a portion of the light emitted from the light source at the first predetermined wavelength and generates light having a second predetermined wavelength different than the first predetermined wavelength. A reflective layer may reflect the light having the second predetermined wavelength toward a display panel.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: July 7, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeaheon Ahn, Cheonjae Maeng, Dongil Son, Taewoo Lim
  • Patent number: 10690834
    Abstract: The present disclosure relates to the field of display technologies, and especially discloses a backlight device and a method for manufacturing the same. The backlight device includes a backlight source, a light guide plate, a reflective layer, an optical adhesive layer and an outcoupling structure. Specifically, in the backlight device, the reflective layer and the light guide plate are located on opposite sides of the backlight source respectively.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: June 23, 2020
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Huijuan Wang, Yunyun Tian, Zezhou Yang, Yonglian Qi, Dejiang Zhao, Minqi Chen, Tao Liu, Shi Shu
  • Patent number: 10674030
    Abstract: An illumination device includes a light source and a rod-like light guide extending in a longitudinal direction for guiding incident light to an object to be illuminated. The light source is disposed at an end of the light guide extending in a longitudinal direction. The light guide includes an incident surface at the longitudinal end to receive light emitted from the light source, a flat emission surface to emit light incident on the light guide toward the object to be illuminated, a parabolic reflective surface to reflect, toward the emission surface, light from a focus of the paraboloid shape of the refractive surface or light passing through the focus from a predetermined area, and a light-scattering portion, having a predetermined area, to scatter light entering through the incident surface and reflect the light toward the reflective surface.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: June 2, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Taku Matsuzawa, Toru Shiraki, Hideki Kunishio, Daisuke Ohama
  • Patent number: 10641440
    Abstract: A light-emitting housing is disclosed. The light-emitting housing includes a light-emitting module and a housing. The light-emitting module includes a light guide plate and at least one light-emitting unit. The light guide plate includes an upper surface, a lower surface, and a plurality of dot regions, the dot regions are located on the lower surface, and the at least one light-emitting unit provides a plurality of light beams incident to the light guide plate. The housing is disposed above the light-emitting module and located on the upper surface of the light guide plate, and the housing includes at least one transparent region. Some of the light beams emitted by the at least one light-emitting unit are reflected through the dot regions and penetrate the upper surface of the light guide plate and the at least one transparent region.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: May 5, 2020
    Assignee: PEGATRON CORPORATION
    Inventors: Hung-Wen Chien, Yu-Te Lin, Yi-Lung Lin, Chih-Yung Wang
  • Patent number: 10623542
    Abstract: The embodiments of the disclosure provide a display assembly and a mobile terminal, relate to a technical field of mobile terminal. The display assembly includes a display screen and a positioning member. The display screen may include a display panel and a backlight module. The backlight module may include a base plate. The display screen defines a light transmitting hole at least penetrating through the backlight module, the light transmitting hole is configured for accommodate the functional device. The positioning member is formed on a side of the base plate facing away from the display panel and located at a periphery of the light transmitting hole.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: April 14, 2020
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Jiao Cheng
  • Patent number: 10598986
    Abstract: The present disclosure relates to the field of display technology, particularly, discloses a backlight assembly and a display device. The backlight assembly includes a light guide plate and a light source. The light guide plate has a first light exiting surface and a second light exiting surface opposite to each other, and a light incident side intersecting with the first light exiting surface and the second light exiting surface. The light source is located at the light incident side of the light guide plate. The light guide plate has a refractive index which decreases first and then increases in a vertical direction from the first light exiting surface to the second light exiting surface.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 24, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Fuzhou BOE Optoelectronics Technology Co., Ltd.
    Inventors: Zongjie Bao, Hongyu Zhao, Qi Chen
  • Patent number: 10591662
    Abstract: To provide a planar light unit that optically and mechanically connects a light-emitting device and a light guide plate to each other in a stable manner so as to improve luminous efficiency and brightness uniformity on a light exit surface. A planar light unit 40 includes: a light guide plate 2, which includes a light incident portion 2f on a side edge of the light guide plate 2; a light-emitting device 3, which is configured to emit light into an inside of the light guide plate 2 through the light incident portion 2f; and a light source board 4, on which the light-emitting device 3 is mounted. The light incident portion 2f includes a recess 2a and a reflecting-shaped portion 2b. A flexible resin 6, which has a light-transmitting property and a flexibility, is disposed between a light incident surface 2c, which is formed on the recess 2a, and the light-emitting device 3.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: March 17, 2020
    Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Junji Miyashita, Tomoo Udagawa
  • Patent number: 10591130
    Abstract: An automotive vehicle light beam projection device, including at least one light source able to emit light rays, an optical projection system with an exit pupil situated on an optical exit element, which optical system is able to project a light beam, wherein the light beam includes a digital screen configured to direct at least one part of the incident light rays emitted by at least one source toward the optical projection system, the device furthermore including means for focusing the light rays emitted by the at least one light source on a zone of the digital screen, and an intermediate assembly for projecting the light rays originating from the digital screen which are configured to illuminate the surface area of the exit pupil.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: March 17, 2020
    Assignee: VALEO VISION
    Inventors: Marine Courcier, Pierre Albou
  • Patent number: 10564411
    Abstract: An illumination device comprises: an optical member that is provided with a circular ring-shaped or horseshoe-shaped light-guiding layer and diffusion layer, which are laminated in a central axis direction, the light-guiding layer having a light-entrance surface facing a tangential direction; and a light-introducing member that is disposed at the radially outer side of the optical member and that introduces illumination light into the light-guiding layer from the light-entrance surface, in the tangential direction; wherein the diffusion layer diffuses the illumination light entering from the light-guiding layer by volume scattering, and the optical member is formed, at least, of one end surface in the axial direction and emits the illumination light emitted from the diffusion layer.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: February 18, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Sho Shinji
  • Patent number: 10557983
    Abstract: A light guide plate, a method of manufacturing a light guide plate, a backlight module, and a display device are disclosed. A reflective layer is provided within the light guide plate, and the reflective layer is located in the path of the parallel incident light for reflecting the parallel incident light so that the parallel incident light exits from the light exit surface. The parallel incident light is an incident light parallel to the light exit surface. Without the a reflective layer, the parallel incident light propagates linearly within the light guide plate and exits from the opposite surface of the light entrance surface. The reflective layer changes the original linear path of the reflective layer and makes the parallel incident light continue to propagate in other directions within the light guide plate.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: February 11, 2020
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xuerong Wang
  • Patent number: 10551653
    Abstract: A backplane for a display device includes a substrate layer, a first metal layer and a second metal layer. The first metal layer protrudes beyond the substrate layer and includes at least one transverse portion and at least one longitudinal portion extending from the transverse portion. The substrate layer is attached on the transverse portion. The second metal layer is attached on the transverse portion. An edge of the substrate layer and an edge of the second metal layer face the longitudinal portion. The longitudinal portion has a length that is greater than or equal to a thickness of the substrate layer and the second metal layer.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: February 4, 2020
    Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Na Wang, Cheng-Fa Chung
  • Patent number: 10553648
    Abstract: A light emitting diode (LED) display device including an array substrate, an opposite substrate, wall structures, at least one LED, an upper reflection layer, a first light barrier layer, a lower reflection layer and a light diffusion material layer. The array substrate, the wall structures and the opposite substrate define an accommodating region. The upper reflection layer is disposed on the LED, wherein the upper reflection layer at least partially covers an upper surface of the LED. The first light barrier layer is disposed on a side of the upper reflection layer away from the array substrate. An orthographic projection of the upper reflection layer on the array substrate is at least partially overlapped with an orthographic projection of the lower reflection layer on the array substrate. The light diffusion material layer is filled in the accommodating region.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 4, 2020
    Assignee: Innolux Corporation
    Inventors: Shu-Ming Kuo, Chih-Yung Hsieh
  • Patent number: 10545277
    Abstract: A display device includes a display element having a display area, a light source, and a light guide element. The light guide element includes a light incident surface that receives incoming light from the light source, an opposite end face opposite to the light incident surface, a light exit surface that emits the light toward the display element, and an opposite plate surface opposite to the light exit surface. The light guide element has a through-hole penetrating the light guide element from the light exit surface to the opposite plate surface, the through-hole corresponding in location to the display area. In an adjacent area adjacent to the opposite end face, a light reflection portion having a reflection surface is disposed, the reflection surface being serrated in a plan view and reflecting light guided by the light guide element to the opposite end face, toward the through-hole.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: January 28, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Nozomu Kohsaka, Kohichi Aso
  • Patent number: 10514566
    Abstract: A backplane for a display device includes a substrate layer, a first metal layer and a second metal layer. The first metal layer protrudes beyond the substrate layer and includes at least one transverse portion and at least one longitudinal portion extending from the transverse portion. The substrate layer is attached on the transverse portion. The second metal layer is attached on the transverse portion. An edge of the substrate layer and an edge of the second metal layer face the longitudinal portion. The longitudinal portion has a length that is greater than or equal to a thickness of the substrate layer and the second metal layer.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: December 24, 2019
    Assignees: HONG FU JIN PRECISION INDUSTRY (Shenzhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Na Wang, Cheng-Fa Chung
  • Patent number: 10488573
    Abstract: The embodiments of the disclosure provide a light guide plate, a backlight module, a display device, a dotting machine and a control method thereof, related to the field of display technology, which can improve the brightness uniformity of the backlight module. The light guide plate includes a light exit surface, a bottom surface opposite to the light exit surface, and a light entrance surface intersecting with the light exit surface and the bottom surface. A plurality of dots are arranged at an outer side of the bottom surface; a shape of a cross section of each dot is an ellipse or a polygon, and the cross section is parallel to the bottom surface.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 26, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BOE OPTICAL SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Nuowei Gong, Shanfei Xu
  • Patent number: 10414330
    Abstract: A vehicle signaling light includes a first light source, a first plate light guiding lens, a second light source, and a second plate light guiding lens. The first plate light guiding lens includes a light incident portion to receive light from the first light source in a direction parallel to the plate surface and a light output surface through which the light having been guided is allowed to exit, and the light incident portion has upper and lower expanded portions. The second plate light guiding lens receives light from the second light source in a direction perpendicular to the plate surface and causes the light to exit from the light guiding lens in the direction parallel to the plate surface. The first and second plate light guiding lenses are stacked on each other to configure the vehicle signaling light including a turn signaling lamp function and a DRL function.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: September 17, 2019
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yuki Tokieda, Kazuya Furubayashi