Light Guide Patents (Class 362/615)
  • Patent number: 10007381
    Abstract: A mobile terminal including a light guide plate; a plurality of light sources disposed on at least one side of the light guide plate; a display positioned on a front surface of the light guide plate; and a controller configured to control the display to operate in one of operation states including a first state, in which all of the plurality of light sources are activated such that an entire portion of the display is illuminated, and a second state, in which at least one light source corresponding to a partial portion of the display among the plurality of light sources is selectively activated such that the partial portion of the display is illuminated, perform an operation in accordance with a first touch input applied to the partial portion of the display in the second state, and not perform an operation in accordance with a second touch input applied to a remaining portion excluding the partial portion of the display in the second state.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: June 26, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Seungmin Seen, Seongcheol Lee, Gunseek Oh, Sangjo Ryu, Jeongwoo Lee
  • Patent number: 9964272
    Abstract: A vehicle lamp includes a heat-dissipation base, a light source mounted on the heat-dissipation base, a lightguide having a light incident surface for receiving light from the light source, a light outgoing surface for projecting a portion of light received from the light source, opposite upper and bottom surfaces disposed between the light incident and light outgoing surfaces, and a light-guiding structure formed on the upper surface. The lightguide is configured to guide a portion of a light beam entering the light incident surface to the light outgoing surface, with the light-guiding structure configured to guide another portion of the light beam entering the light incident surface to be outputted through the bottom surface. A condensing lens is further provided to receive light from the light outgoing surface and the bottom surface.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: May 8, 2018
    Assignee: Lextar Electronics Corporation
    Inventors: Yu-Min Lin, Shih-Kai Lin, Mong-Ea Lin
  • Patent number: 9949352
    Abstract: An illuminating device may include optical sources, a diffusion plate having emission regions corresponding to the optical sources, and a control unit configured to control lighting-up/lighting-out and an emission intensity of the optical sources based upon a schedule when carrying out performance on an optical travel by the diffusion plate. The emission regions each may have a predetermined length and extend in a longitudinal direction of the diffusion plate. In the schedule, a light-up/light-out state of each optical source and an emission intensity of an optical source to be lit up are set based upon an average illuminance in an illuminance distribution of the diffusion plate by combining illuminances of lights emitted from the emission regions. For realizing a temporal change of the average illuminance set, the light-up/light-out state of each optical source and emission intensity of the optical source to be lit up in each time point are set.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 17, 2018
    Assignee: Valeo Japan Co., Ltd.
    Inventors: Masamichi Ishibashi, Masaaki Toju
  • Patent number: 9903553
    Abstract: A light-guiding pillar used in a vehicle lamp includes a major structure and a light-guiding structure. The major structure has a light incident surface, a light outgoing surface, an upper surface, and a bottom surface. The upper surface and the bottom surface are disposed between the light incident surface and the light outgoing surface, in which the upper surface and the bottom surface are opposite to each other. The major structure is configured to guide a portion of a light beam entering the major structure through the light incident surface to the light caving surface. The light-guiding structure is disposed on the upper surface and configured to guide another portion of the light beam entering the major structure through the light incident surface from the upper surface to the bottom surface with passing through the bottom surface.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: February 27, 2018
    Assignee: Lextar Electronics Corporation
    Inventors: Yu-Min Lin, Shih-Kai Lin, Mong-Ea Lin
  • Patent number: 9889793
    Abstract: In one aspect, the disclosure relates to a light emitting assembly for an instrument panel, which includes a light guide assembly a light guide assembly body and at least one light transmissive leg extending from the light guide assembly body. The leg has a light input surface along an edge in close proximity to a light emitting diode. The leg may be integral with the body at an intersection that forms a prismatic Y shaped light reflective structure at the body. The prismatic Y shaped light reflective structure forms an angle of reflection surface at the intersection with the body of a predetermined angle of reflection to reflect light from the leg to the light guide assembly body. The reflected light ray is refracted substantially uniformly through the light guide assembly body to produce substantially uniform illumination of the light guide assembly.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: February 13, 2018
    Assignee: N.S. International, LTD
    Inventors: Arul Krishna, Sibing Xu, Anirudh N. Hegde
  • Patent number: 9857502
    Abstract: Provided is a method of fabricating a thick film of a large area substrate. The method of fabricating comprises applying a first rein on a base substrate to form a rein partition, and applying a second resin on an inner area formed by the resin partition. According to the present invention, by forming a first partition formed with resin when a film of a large area is coated and then by coating the film, uniformity and reliability of the coating can be improved.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: January 2, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Myung Jun Kim, Yun Gu Kang, Myoung Soo Ahn
  • Patent number: 9817172
    Abstract: The disclosure is related to a backlight module comprising a light guide plate, a light source assembly and a frame. The frame surrounds the light guide plate. The light source assembly is arranged between the light incident surface of the light guide plate and the frame. The light source assembly comprises a substrate, a light emitting body and a transparent body. The transparent body packages the light emitting body on the substrate. The outer surface of the transparent body facing the light emitting body is a light emitting surface having a groove formed thereon facing the light incident surface of the light guide plate. The groove enables the light emitted from the transparent body to congest toward the direction of the center of the light guide plate to increase the optical coupling efficient of the backlight module. The disclosure further provides a liquid crystal display device.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: November 14, 2017
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventors: Jie Zeng, Yanxue Zhang
  • Patent number: 9810830
    Abstract: A backlight module including a back plate which includes a flat plate, first and second wedges respectively formed at both ends of the flat plate, and a plurality of third wedges formed between the first and second wedges on the flat plate, wherein an angle between a long inclined plane of the first wedge and a flat plate, an angle between a long inclined plane of the second wedge and a flat plate, and an angle between an inclined plane of the third wedge and the flat plate are obtuse angle, acute angle and acute angle respectively; a first light source assembly disposed on the first wedge; a second light source assembly disposed on the second wedge; and a plurality of third light source assemblies, wherein each third light source assembly is disposed on the corresponding third wedge.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: November 7, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRON ICS TECHNOLOGY CO., LTD.
    Inventor: Yong Fan
  • Patent number: 9798065
    Abstract: The disclosure is related to a light guide plate having a light-emitting surface, wherein a plurality of V-shaped grooves is formed on the light-emitting surface; each of the V-shaped grooves extends along a curved path. The V-shaped grooves of the light guide plate extend along the curved path to avoid the light guide plate from collecting light in a single direction. The interference fringes of the light guide plate are reduced, thereby improving the uniformity of light emission of the light guide plate.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: October 24, 2017
    Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd, Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventors: Lingyan Chen, Yanxue Zhang, Zhongjie Liu
  • Patent number: 9728594
    Abstract: A display device is disclosed. In one aspect, the display device includes a substrate, a display unit formed over the substrate and a thin film encapsulation layer covering the display unit. The display device further includes an encapsulation substrate formed over the thin film encapsulation layer and encapsulating the display unit and a photosensor formed on an end of the thin film encapsulation layer.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: August 8, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jaebeom Choi, Yunmo Chung
  • Patent number: 9688191
    Abstract: A vehicle display assembly including at least one flexible light guide in a path of illumination to illuminate predetermined different shapes, contours, areas and/or surfaces of the vehicle display assembly. The flexible light guide is silicon or other material suitable to provide flexibility to allow use of the same flexible light guide in different vehicle display assembly shapes and to be a light guide conductor. The flexible light guide is mountable adjacent to at least one light source within the vehicle display assembly to illuminate the predetermined shapes, contours, areas and/or surfaces of the vehicle display assembly visible to vehicle occupants.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: June 27, 2017
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Maria Nohemi Bravo Solis, Monica Abigail Aceves Mendoza, Humberto Merchand Alvarado
  • Patent number: 9678264
    Abstract: A light guide plate has a light guide plate member having a light incident surface on an end face of the light guide member, and a light emitting surface on a front surface of the light guide plate member, wherein the light incident surface is structured to have light incident thereon, and wherein the light emitting surface is structured to widen and emit light incident thereon out of the light guide plate member, and a directivity changing unit arranged on a light incident end portion of the light guide plate member on the front surface or a back surface of the light guide plate member. The directivity changing unit has a first inner inclined surface and a second inner inclined surface that change a directivity of the incident light within the directivity changing unit to widen the light laterally with respect to a direction perpendicular to the light incident surface.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: June 13, 2017
    Assignee: OMRON Corporation
    Inventors: Masayuki Shinohara, Norikazu Kitamura, Kazuhide Hirota
  • Patent number: 9658383
    Abstract: A display device is disclosed, which comprises: a display panel; and a backlight module corresponding to the display panel. The backlight module comprises: a light source; and a light guide plate adjacent to the light source and having a surface, wherein at least one light guide dot with an embossment and a cavity is disposed on the surface of the light guide plate, and the cavity surrounds the embossment.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: May 23, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Yen-Liang Chen, Meng-Ko Tsai, Kuei-Ling Liu
  • Patent number: 9632231
    Abstract: A light guide plate includes a light exit surface, a reflection surface opposite to the light exit surface, and at least one light incidence surface connecting to the light exit surface and the reflection surface. The reflection surface includes a plurality of minute projection structures projecting toward interior of the light guide plate. Each of the minute projection structures includes at least two side faces coated with a high reflectivity material. The at least two high reflectivity material coated side faces form at least one included angle pointing toward the at least one light incidence surface. The minute projection structures have a distribution density that is decreased with an increase of a distance thereof from the light sources.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: April 25, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Gege Zhou
  • Patent number: 9581735
    Abstract: A backlight unit includes a light source and a two-dimensional micro lens array (MLA) sheet including a plurality of lens unit each having a conic lens shape with a cross-section, taken through the lens axis, having a shape defined by the equation: y = x 2 / r 1 + 1 - ( 1 + k ) ? ( 1 / r ) 2 ? x 2 where k is a constant with a value of less than or equal to ?1, and r is the radius of curvature at the peak of the lens unit.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Byoung-Mook Kim, Kwang-Seung Park, Byung-Su Park, Yune-Hyoun Kim, Sang-Choll Han, Jin-Hyun Kim
  • Patent number: 9515291
    Abstract: Provided is a light emitting apparatus including a substrate including a plurality of light emitting devices, wherein the substrate further includes a plurality of first members configured to diffuse light emitted from at least one of the light emitting devices, and a second member that is positioned between the first members, wherein the second member includes a light absorbing layer.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: December 6, 2016
    Assignee: Sony Corporation
    Inventors: Yasuyuki Kudo, Jiro Yamada, Seiichiro Jinta, Shigeyuki Matsunami
  • Patent number: 9459397
    Abstract: An edge lit lighting device including a housing, a power circuit, a light source, and an optic. The power circuit may be carried by the housing, and adapted to form an electrical connection with an external power source. The light source may be carried by the housing and electrically connected to the power circuit. The optic may be carried by the housing and positioned in optical communication with the light source. The optic may further include a receiving surface positioned adjacent to the light source, and first and second emitting surfaces. The first emitting surface may include a plurality of features configured to redirect light defined as redirected light in a direction of the second emitting surface, the redirected light being emitted from the second emitting surface. The lighting device may further include pluralities of optics of light sources.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: October 4, 2016
    Assignee: Lighting Science Group Corporation
    Inventors: Mark Penley Boomgaarden, Ricardo Romeu, Eric Holland, Ryan Kelley
  • Patent number: 9366424
    Abstract: A light source device includes: a substrate having a front surface on which a light-emitting diode is mounted; and a case having a bottom plate that holds the substrate, wherein a driver circuit for driving the light-emitting diode is mounted on a rear surface of the substrate that is opposite to the front surface thereof, wherein an opening corresponding to a size of the light-emitting diode is formed in the bottom plate of the case, wherein the front surface of the substrate is fixed to a rear surface of the bottom plate of the case from outside of the case with the light-emitting diode fitted in the opening, and wherein a coating material with an emissivity of equal to or higher than 0.9 and equal to or lower than 1.0 is applied to an outer surface of four side walls of the case.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: June 14, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kenji Takase
  • Patent number: 9261639
    Abstract: An optical display device comprises a light source, a pixelated display panel, and a light guide to collect light from the light source and to transport the light via total internal reflection. A first surface of the light guide includes recessed regions having a circular-based profile, such as a quarter-circle profile, to reflect the light from the light guide to the pixelated display panel. A first optical layer covering at least a portion of the first surface of the light guide fills the recessed regions included in the first surface of the light guide. A second optical layer covering at least a portion of a second surface of the light guide transmits the reflected light to the pixelated display panel.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 16, 2016
    Assignee: Modilis Holdings LLC
    Inventor: Tero Johannes Tuohioja
  • Patent number: 9235080
    Abstract: A display device and terminal equipment including the display device are described. The display device includes a first panel having a first area; a liquid crystal display panel disposed below the first panel and having a second area, configured to display an image based on an image signal; a backlight disposed below the liquid crystal display panel, configured to produce light; a light guide plate disposed below the liquid crystal display panel and having a third area, configured to fix the backlight and cause the light produced by the backlight to be uniformly irradiated on the liquid crystal display panel; and a reflection unit disposed below the light guide plate, configured to reflect the light produced by the backlight to the light guide plate. A space for accommodating and protecting the liquid crystal display panel and the backlight is formed between the light guide plate and the first panel.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: January 12, 2016
    Assignees: LENOVO (BEIJING) CO., LTD., BEIJING LENOVO SOFTWARE LTD.
    Inventors: Zhou Yu, Xiufeng He, Zhenyuan Zhao
  • Patent number: 9207390
    Abstract: Light guide structures that include a transparent plate having a first end and a second end; and a plurality of transparent light guide members, each transparent light guide member extending from the first end to the second end along one surface of the transparent plate and being configured to emit white light in response to light applied thereto are described.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: December 8, 2015
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Kenichi Hashizume
  • Patent number: 9164225
    Abstract: Light guide structures that include a transparent plate having a first end and a second end; and a plurality of transparent light guide members, each transparent light guide member extending from the first end to the second end along one surface of the transparent plate and being configured to emit white light in response to light applied thereto are described.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: October 20, 2015
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Kenichi Hashizume
  • Patent number: 9132684
    Abstract: A light guide plate and a manufacturing method thereof are disclosed. The light guide plate includes a substrate, a screen-printed layer, and a light-solidified layer. The substrate has a first surface and a second surface, and the first surface and the second surface are opposite. The screen-printed layer is formed on the first surface of the substrate by a screen-printing process. The light-solidified layer is formed on the second surface of the substrate by a light-solidification and imprinting process. The screen-printed layer has a plurality of screen point patterns. The light-solidified layer has a plurality of micro-structures.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: September 15, 2015
    Assignee: DARWIN PRECISIONS CORPORATION
    Inventors: Jen-Shun Lin, Bai-Chen Chang, Kun-Chih Pan
  • Patent number: 9128225
    Abstract: The present invention relates to a backlight unit with sag control patterns, comprising a light source formed in a side surface of a light guide plate; and a plurality of optical patterns formed on a lower surface of the light guide plate, sag of the plurality of optical patterns increasing as the optical patterns become more distant from the light source. By controlling sag of optical patterns formed in a light guide plate, efficiency of light emitted from a backlight unit can be improved and uniformity of the light can be maintained. Also, since sag of optical patterns can be controlled, by increasing the number of optical patterns (by improving fill factor), light efficiency and uniformity can be controlled easily. Also, compared with a conventional method for manufacturing white dot patterns, white dot patterns can be more efficiently manufactured in terms of development time and costs.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: September 8, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Dong Hyun Lee, Dong Mug Seong, Beom Sun Hong, Jun Phill Eom
  • Patent number: 9039268
    Abstract: Embodiments of the invention disclose a backlight unit, including: a light guide plate, a light source member, a reflection film, wherein: the light guide plate (LGP) includes a light incident side, a light emission side and a bottom side opposite to the light emission side, the light guide plate is for emitting light entered from the light incident side through the light emission side; the light source member is disposed on the light incident side of the LGP and light emitted by the light source member enters the LGP through the light incident side of the LGP; the reflection film is at least disposed on the bottom side of the LGP and is for reflecting light back into the LGP; wherein a reflection structure is disposed on the bottom side of the LGP and a microstructure is disposed on the light emission side of the LGP.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: May 26, 2015
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Ruoyu Ma
  • Patent number: 9039222
    Abstract: A backlight module includes a substrate, a plurality of LED packages mounted on the substrate and a light diffusion board located above the LED packages. The light diffusion board includes a light incident surface facing toward the LED packages and a light output surface. A plurality of light-guiding portions is configured extending from the incident surface of the light diffusion board toward the LED package. Each light-guiding portion comprises a concave surface at an outer periphery thereof. A diameter of each light-guiding portion decreases gradually from light diffusion board toward the LED packages. The concave surface of each light-guiding portion is recessed inwardly from the outer periphery of the light-guiding portion. Light from the LED packages and emitting into the light-guiding potions is divergently and uniformly adjusted into the light diffusion board by the concave surfaces of the light-guiding portions.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: May 26, 2015
    Assignee: ADVANCED OPTOELECTRONIC TECHNOLOGY, INC.
    Inventors: Chao-Hsiung Chang, Pin-Chuan Chen, Li-Hsiang Chen
  • Publication number: 20150138828
    Abstract: Embodiments of the invention provide a backlight source and a display device. An aperture is formed in a frame of the backlight source. A light guide plate in the backlight source is provided with a flank. The flank extends outwards through the aperture. The display device includes the backlight source, and a light transmitting region for transmitting light from the flank of the light guide plate is arranged on the side wall of the display device. The light emission of the side wall of the display device is realized, the application range of the backlight source is widened and the light emitting diversity is increased on the condition of not adding other light sources.
    Type: Application
    Filed: May 7, 2014
    Publication date: May 21, 2015
    Applicants: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Yaozuo KE
  • Patent number: 9036240
    Abstract: The disclosure provides an electronic paper display. The electronic paper display includes an electronic paper panel. A light guide plate is disposed on the electronic paper panel. The light guide plate has a first surface and a second surface opposite to the first surface. A conductive pattern structural layer is disposed on the light guide plate. A light source is disposed on a side of the light guide plate. The first surface of the light guide plate is a patterned surface. A light generated by the light source is reflected or scattered to the electronic paper panel by the patterned surface.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: May 19, 2015
    Assignee: Wistron Corp.
    Inventor: Sheng-Shan Huang
  • Patent number: 9022590
    Abstract: A luminous keyboard device includes plural keys, a light-emitting element, and a light guide plate. By the light guide plate, a light beam emitted by the light-emitting element is guided to the plural keys. The light guide plate includes plural elongated slots and a light-absorbing part. The plural elongated slots are located near a lateral edge of the light guide plate. After the light beam transferred within the light guide plate is transmitted through the elongated slots and departed from the light guide plate, the fraction of the light beam introduced into the lateral edge of the light guide plate is reduced. The light-absorbing part is located at the lateral edge of the light guide plate for absorbing the portion of the light beam which is introduced into the lateral edge of the light guide plate. Consequently, the lateral light leakage of the light guide plate can be avoided.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: May 5, 2015
    Assignee: Primax Electronics Ltd.
    Inventors: Chung-Yuan Chen, Hsuan-Wei Ho
  • Patent number: 9022636
    Abstract: The present invention provides a side-edge backlight module, which includes a backplane, a light guide plate arranged inside the backplane, and a backlight source mounted to the backplane. The backlight source includes a circuit board and a plurality of LED lights mounted to the circuit board and electrically connected to the circuit board. The circuit board includes a mounting section and a bent section connected to the mounting section. The LED lights are mounted to the mounting section. The bent section is coupled to the backplane. The light guide plate is supported on the bent section. The side-edge backlight module of the present invention uses a MCPCB having a bent section to replace the conventional heat dissipation arrangement that attaches an MCPCB through thermal paste to an aluminum extrusion in order to improve the performance of heat dissipation and enhance the quality of backlight module.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: May 5, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chechang Hu, Lindong Fang
  • Patent number: 9022635
    Abstract: Disclosed are a light guide plate and a backlight unit. The backlight unit according to the present invention includes: a light guide plate; a light source disposed on one side of the light guide plate; and a reflective plate disposed under the light guide plate, wherein, in the cross section of one side of the light guide plate, the light guide plate includes a plurality of unit slits including a first slit and a second slit, wherein the first slit and the second slit are inclined from a top surface toward the inside of the light guide plate with respect to a vertical direction of the top surface, and wherein the first slit and the second slit are symmetrical to each other with respect to the middle portion of the unit slit.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: May 5, 2015
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Jun-Bo Yoon, Joo-Hyung Lee, Jeong-Ho Yeon
  • Patent number: 9022634
    Abstract: Embodiments of the present invention disclose a backlight and a display device, to reduce the number of LEDs in a backlight, save costs, while avoiding dark areas appearing on the screen, so as to ensure display effect. The backlight comprises a first light guide plate and at least one light-emitting diode assembly, and the light-emitting diode assembly is located on one side of the first light guide plate. The light-emitting diode assembly comprises a second light guide plate, at least one light-emitting diode and a reflective film, wherein the at least one light-emitting diode is located on at least one side of the second light guide plate, and the reflective film is located on at least one side of the second light guide plate.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: May 5, 2015
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Zhanchang Bu, Bochang Wang, Fei Wang, Yanjun Sun, Yi Deng, Guangsheng Hua
  • Patent number: 9019199
    Abstract: Disclosed herein is an electrophoretic display apparatus switchable between a black-white mode and a color mode. The electrophoretic display apparatus includes an electrophoretic display panel, a light guide, a light source, a light-splitting element and a lens element. The light guide is disposed in front of a display area of the electrophoretic display panel. The light source is operable to emit a light, which is directed to the display area by the light guide. The light-splitting element is disposed between the light guide and the electrophoretic display panel, and is operable to split the light into a first, a second and a third beam each having a principal wavelength different from the others. The lens element is disposed between the light-splitting element and the display area, and is operable to direct the first, second and third beams to corresponding sub-pixels.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: April 28, 2015
    Assignee: E Ink Holdings Inc.
    Inventor: Shih-Yu Wang
  • Patent number: 9016922
    Abstract: An escalator, a moving walkway or an elevator cage includes at least one illuminable transparent panel. The illuminable transparent panel has a construction containing a plurality of layers. The two side surfaces of each layer are bounded in the area dimension thereof by an edge region. The layers of the construction are arranged with the side surfaces against one another. The layer sequence of the construction is defined, wherein a first layer is a first glass pane, a second layer is a first transparent polymer layer, a third layer is a second glass pane, a fourth layer is a transparent polymer material plate containing light-dispersing particles, a fifth layer is a third glass pane, a sixth layer is a second transparent polymer layer and a seventh layer is a fourth glass pane.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: April 28, 2015
    Assignee: Inventio AG
    Inventors: Michael Matheisl, Gunther Niedermayer
  • Patent number: 9019614
    Abstract: An optical system is provided with a transparent element having a proximal surface on one side and a distal surface on an opposite side. A plurality of light-scattering structures is formed in the distal surface. A positionally-corresponding plurality of surface lenses is provided on the proximal surface. The light-scattering structures and the surface lenses may be arranged in a slightly angled or offset square array relative to a side surface of the transparent element. A rastering, collimated light source, directs a beam of light roughly in the plane of the transparent element towards individual light-scattering structures. The light-scattering structures scatter at least a portion of the light towards the corresponding surface lenses, which may collect and collimate the light towards a viewing location. The optical system may be incorporated into a head-mounted display (HMD).
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: April 28, 2015
    Assignee: Google Inc.
    Inventor: Richard Wayne DeVaul
  • Patent number: 9010982
    Abstract: A light guide module with adjustable lighting of a contour surface is composed of light sources and a light guide. The light guide is composed of a primary part, a Y-shaped branch, and a secondary part with a contour surface. The supporting surface of the Y-shaped branch of the light guide is composed of a system of directional optical elements, is of prismatic shape, conical shape, or a combination thereof, and has a vertex on the optical axis of the primary part of the light guide.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: April 21, 2015
    Assignee: Varroc Lighting Systems S.R.O.
    Inventors: Miroslav Kropac, Petr Mrklovsky, Libor Juttner, Thomas Nejezchleba
  • Patent number: 9010981
    Abstract: A display device includes an exterior surface; a main emission region comprising a side edge when viewed in a viewing direction perpendicular to the exterior surface; and an auxiliary emission region next to the side edge when viewed in the viewing direction. The device further includes a light-guide plate disposed in the auxiliary emission region when viewed in the viewing direction; and a first light source disposed adjacent to the light-guide plate and configured to emit light in a first direction to supply the light to the light-guide plate. An imaginary straight line extending from the first light source in the first direction is tilted with respect to the side edge while not crossing the side edge.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yun Jae Kim
  • Patent number: 9004738
    Abstract: The present invention provides a display device comprising: back plate, lightguiding plate, optical film, and positioning unit. Lightguiding plate is disposed on back plate. Optical film is disposed on lightguiding plate. Optical film comprises at least one positioning section. Positioning section comprises first extending section extending out from the margin of optical film, and second extending section being connected with extending section. Positioning unit is disposed close to optical film and fixed on back plate. Positioning unit comprises main section and hold down section connecting to main section. The present invention, adding positioning unit comprising a groove holding first extending section and hold down section holding down second extending section on back plate, makes optical film positioned and prevents disposition and falloff during the manufacturing and transportation process. In addition, without applying tapes to position optical film, as a result, optical film waving is prevented.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: April 14, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chengling Lv, Yuchun Hsiao
  • Patent number: 8998478
    Abstract: A lighting assembly includes a light guide having a first major surface, a second major surface opposite the first major surface, a light input edge, and an end edge distal the light input edge. Light input to the light guide through the light input edge propagates by total internal reflection toward the end edge. The lighting assembly further includes light extracting elements at least one of the major surfaces of the light guide, the light extracting elements configured to extract light through the first major surface in a direction away from the light input edge and away from the first major surface, and a banding reduction element at the end edge configured to redirect light incident thereon in a direction away from the light input edge.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: April 7, 2015
    Assignee: Rambus Delaware LLC
    Inventors: Timothy A. McCollum, Jeffery R. Parker, Fumitomo Hide, Alexey Titov, Ian Hardcastle, Robert M. Ezell
  • Patent number: 8998477
    Abstract: An apparatus and method for providing a light source in the form of a surface are disclosed. In one embodiment, the apparatus comprises a first sheet including a light diffuser, and a light source placed along an edge of the first sheet. The first sheet diffuses light generated by the light source, wherein the distribution of light diffusing particles is varied throughout the light diffuser to emanate a predetermined light pattern.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: April 7, 2015
    Assignee: I2iC Corporation
    Inventors: Udayan Kanade, Balaji Ganapathy
  • Patent number: 8998479
    Abstract: A surface light guide has a radiation exit area extending along a main extension plane of the surface light guide and is provided for laterally coupling radiation. The surface light guide includes scattering locations for scattering the coupled radiation. The surface light guide includes a first boundary surface and a second boundary surface which delimit the light conductance of the coupled-in radiation in the vertical direction. A first layer and a second layer are formed on each other in the vertical direction between the first boundary surface and the second boundary surface. Further disclosed are a planar emitter including at least one surface light guide.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: April 7, 2015
    Assignee: OSRAM Opto Semiconductor GmbH
    Inventors: Peter Brick, Stephan Kaiser, Gerhard Kuhn, Ales Markytan, Julius Muschaweck, Christian Neugirg
  • Patent number: 8985801
    Abstract: A light guide plate fixing structure and a backlight module using the same, comprising a first abutting wall formed at the side edge of the light guide plate, a second abutting wall formed on the backplane, and a constant-force spring arranged between the first abutting wall and the second abutting wall; the constant-force spring has a fixing end and a support end, the fixing end being fixed on the first abutting wall, the support end forming an elastic foot that abuts against the second abutting wall, with the light guide plate being fixed with the help of the elastic force produced by bounce of the constant-force spring after being pre-compressed: when the light guide plate is expanded, it can push the spring away and be released and expanded; when the light guide plate is contracted, rebound of the spring will make the spring move with the light guide plate.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 24, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Zexin Wu, Yuchun Hsiao, Tian Zhang
  • Patent number: 8979349
    Abstract: Illumination devices and methods of making same are disclosed. In one embodiment, an illumination apparatus includes a light source, a light guide having a planar first surface, a first end and a second end, and a length therebetween, the light guide positioned to receive light from the light source into the light guide first end, and the light guide configured such that light from the light source provided into the first end of the light guide propagates towards the second end, and a plurality of light turning features that are configured to reflect light propagating towards the second end of the light guide out of the planar first surface of the light guide, each light turning feature having a turning surface and an interferometric stack formed on the turning surface.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 17, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Ion Bita, Sapna Patel, Clayton Ka Tsun Chan, SuryaPrakash Ganti, Brian W. Arbuckle
  • Patent number: 8967847
    Abstract: An illumination assembly is adapted to illuminate a display module that is visible by reflecting environmental lights. The illumination assembly includes a substrate, a visual-light source, and a light guide. The substrate includes a top surface. The visual-light source is disposed on the top surface and is provided for emitting a visual light. The light guide is disposed corresponding to the top surface of the substrate. The light guide includes a light-incidence surface and a light-emergence surface. The visual light enters the light guide through the light-incidence surface and is reflected at least once. The visual light then exits the light guide through the light-emergence surface and travels along a light-emergence direction.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 3, 2015
    Assignee: Wistron Corporation
    Inventor: Sheng-Shan Huang
  • Publication number: 20150055368
    Abstract: A display device includes a back cover, a front frame, a backlight module, and a display panel. The back cover has at least one supporting structure and at least one position-limiting structure. The front frame is assembled to the back cover. The backlight module is disposed between the back cover and the front frame and includes a light guide plate (LGP), and the supporting structure supports a bottom surface of the LGP. The display panel is disposed between the backlight module and the front frame, the position-limiting structure is aligned to a side surface of the display panel, and a position of the display panel is limited by the position-limiting structure.
    Type: Application
    Filed: October 3, 2013
    Publication date: February 26, 2015
    Applicant: Wistron Corporation
    Inventors: Yi-Hsuan Chu, Yung-Jan Chang, Chi-Wei Kuo, Hung-Te Chan, Yi-An Chen, Yi-Fan Chen, Kuan-Yu Chou, Chen-Hung Lin
  • Patent number: 8964147
    Abstract: An electro-optic device is provided. In the electro-optic device, when a groove is sealed to be hollow, a sacrificial film is formed in the groove before forming a first sealing film, the first sealing film is formed, and then the sacrificial film is removed through a penetration portion of the first sealing film. A second sealing film is formed on the first sealing film, and the penetration portion of the first sealing film is blocked by the second sealing film. For this reason, it is possible to form the first sealing film to block an opening portion of the groove, and it is possible to prevent the first sealing film from being formed up to the inside of the groove.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: February 24, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Satoshi Ito, Yohei Ono
  • Publication number: 20150049285
    Abstract: An electronic device may be provided with a display. The display may include display layers characterized by an active area and backlight structures that provide backlight to the active area. To accommodate components such as a button, an edge portion of a light guide plate in the backlight structures that does not overlap the active area is bent out of the plane of the light guide plate. The bent edge portion of the light guide plate may be formed by molding clear plastic in a die or by bending a flexible sheet of clear polymer. Flared structures may be formed on the flexible sheet of clear polymer to help guide light from light-emitting diodes into the flexible sheet of clear polymer. The flared structures may be formed by applying resin coating layers to the flexible sheet of clear polymer.
    Type: Application
    Filed: August 13, 2013
    Publication date: February 19, 2015
    Applicant: Apple Inc.
    Inventors: Amy Qian, Jeremy C. Franklin, John Raff, Victor H. Yin, Wenyong Zhu
  • Patent number: 8956028
    Abstract: A light projection unit capable of improving light use efficiency is provided. This light projection unit includes: a fluorescent member that includes an illuminated surface to which laser light is directed, converts at least part of the laser light into fluorescent light and outputs the fluorescent light from chiefly the illuminated surface; and a reflection member that includes a first reflection surface which reflects the fluorescent light output from the fluorescent member. The illuminated surface of the fluorescent member is inclined with respect to a predetermined direction in such a way that the illuminated surface faces in a direction opposite to a light projection direction.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: February 17, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Koji Takahashi, Yoshiyuki Takahira, James Suckling, David Montgomery
  • Patent number: 8957880
    Abstract: In a local dimming technology for reducing power consumption of a display device using a backlight as in a liquid crystal display, the backlight is configured by a plurality of independently controllable light sources, an image is divided into areas of the same number as that of the controllable light sources and light emission intensity of the light source is calculated based on a feature value of each area. However, this technology has a problem that when a backlight luminance distribution within each area is not uniform, image quality is deteriorated or a power consumption reduction effect is lowered. In the present invention, the image is divided into areas of the number greater than that of the controllable light sources, and the light emission intensity of each light source is determined based on the feature values of a plurality of areas to reduce the above-described problem.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: February 17, 2015
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Kazuhiko Tanaka, Yasutaka Tsuru, Yuya Ogi
  • Patent number: 8958029
    Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal cell, light source devices and a light guide plate. The light guide plate applies, to a rear surface of the liquid crystal cell, light beams from the light source devices. The light guide plate includes a first light input portion at a first-shorter-side side surface and a second light input portion at a second-shorter-side side surface. The light guide plate includes a flat first surface opposed to the rear surface and a second surface opposite to the first surface. The second surface includes a first slant surface inclined so that a thickness of the light guide plate decreases as a position goes from the first-shorter-side side surface to an approximately central portion and a second slant surface inclined so that the thickness decreases as a position goes from the second-shorter-side side surface to the approximately central portion.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: February 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Shinji Matsuo