Type Of Surface Patents (Class 362/619)
  • Patent number: 10955604
    Abstract: A suspended lighting fixture for direct/indirect lighting having a broad light emitting surface and including a thin curved sheet of an optically transmissive material, an LED strip optically coupled to a light input edge of the curved sheet, one or more suspension elements, an elongated heat dissipating structural element longitudinally extending along the light input edge, and an opaque elongated housing at least partially enclosing the LED strip. The curved sheet may include forward-deflecting or forward-scattering elements distributed over an area of the curved sheet according to a two-dimensional pattern and configured to extract light from one location of the sheet and direct the extracted light toward a second location of the sheet.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: March 23, 2021
    Assignee: S.V.V. TECHNOLOGY INNOVATIONS, INC.
    Inventor: Sergiy Vasylyev
  • Patent number: 10909908
    Abstract: An image display device includes: a display unit that displays an image; a right side support and a left side support that support the display unit in an upright state, and are at least partially light-transmissive; a right side first light source and a left side first light source that are disposed in the display unit, and emit light to at least a part of the right side support and the left side support.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: February 2, 2021
    Assignee: PANASONIC AVC NETWORKS KUALA LUMPUR MALAYSIA SDN. BHD.
    Inventors: Masahiro Yamamoto, Naoki Noguchi, Osamu Nakazawa, Toshiharu Tsutsui, Naoki Matsumura, Kazuhiro Tada
  • Patent number: 10761255
    Abstract: Disclosed is a light guide including a core bar of a transparent material extended in a length direction from a first side to a second; and a plurality of reflection parts printed in parallel along with the length direction of the core bar on the outer surface; wherein spaces between the reflection parts are the same or decreased from the first side of the core bar toward the second side of the core bar.
    Type: Grant
    Filed: October 28, 2018
    Date of Patent: September 1, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Chan Hee Kang, Yang Jin Kwon
  • Patent number: 10746919
    Abstract: A backlight module includes a light guide plate that has a first side and a second side, a light emitting element, and a light guide element. The light emitting element is adjacent to the first side of the light guide plate. The light guide element is disposed between the first side and the second side, and forms a first opening therein. The light guide element includes a first refractive part and a second refractive part. The first refractive part has a first refractive index, the second refractive part has a second refractive index, and the first refractive index and the second refractive index are different from a refractive index of the light guide plate. The orthogonal projections of the first refractive part and the second refractive part on the first side are non-overlapped with each other.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: August 18, 2020
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Yen-Hua Lo, Hsin-Chun Huang
  • Patent number: 10365497
    Abstract: Discussed are a backlight unit and an autostereoscopic 3D (three-dimensional) display device including the same, in which a 3D image can be displayed without using a 3D light controller that includes a liquid crystal layer. The backlight unit may include a 3D light guide plate having first light output patterns, first light sources irradiating light to at least one side of the 3D light guide plate, a 2D (two-dimensional) light guide plate arranged below the 3D light guide plate, and second light sources irradiating light to at least one side of the 2D light guide plate. The first light output patterns are a plurality of line prism patterns spaced apart from each other.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 30, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: ChangHo Lee, SeongHwan Ju, YoonSung Tak
  • Patent number: 10227005
    Abstract: A vehicular display device includes a plurality of monitors that include screens displaying vehicle information, a display board including a plurality transmission display portions each of which transmits and displays the screen of the respective monitors from a rear side and which are arranged side by side, a boundary portion that is positioned between the transmission display portions and an index display portion that forms an index row to display a vehicle state value, and an index light source that illuminates the index display portion. The index light source applies ultraviolet light for illuminating the index display portion to the index row from a front side of the display board, and the index row is formed in the display board in front of the transmission display portions over each of the transmission display portions interposing the boundary portion, and the index row is irradiated when receiving the ultraviolet light.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: March 12, 2019
    Assignee: DENSO CORPORATION
    Inventors: Seigo Tane, Katsumi Fujita
  • Patent number: 10139550
    Abstract: Variable index light extraction layers that contain a first region with a first material and a second region including a second material are described, where the first region has a lower effective index of refraction than the second region. Optical films and stacks may use the variable index light extraction layers in front lit or back lit display devices and luminaires.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: November 27, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: David Scott Thompson, Shawn C. Dodds, Mikhail L. Pekurovsky, Kevin R. Schaffer, Matthew S. Stay, Steven D. Solomonson, John A. Wheatley, Zhaohui Yang, Joseph W. Woody, V
  • Patent number: 10095271
    Abstract: A multi-faced display device includes a first display panel and a second display panel, each of which is curved to form an L-shaped structure. The first display panel is encapsulated with the second display panel such that the first display panel and the second display panel together form a closed structure.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: October 9, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jiaheng Wang, Feng Bai, Jiuxia Yang
  • Patent number: 10048647
    Abstract: An optical waveguide includes a waveguide body and a spatially-varying volume hologram. The volume hologram increases, in a coordinate direction along the volume hologram, an angle of incidence by which light propagating in the waveguide body via total internal reflection is released from the waveguide body. The optical waveguide may form part of an optical system that includes one or more light sources and/or optical sensors.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: August 14, 2018
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Timothy Andrew Large, John Lutian
  • Patent number: 10036517
    Abstract: A lightguide functioning as a luminaire. The luminaire includes at least one solid state light source, such as an LED, and a lightguide configured to receive light from the solid state light source. Light from the light source is coupled into the lightguide and transported within it by total internal reflection until the light exits the lightguide. A shape of the lightguide causes and directs extraction of the light, and can also be used to create a particular pattern of the extracted light. Such shapes include linear wedges and twisted wedges. Optical films can be included on the light input and output surfaces of the lightguide.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: July 31, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Raymond P. Johnston, Robert L. Brott, Patrick R. Fleming, Karl J. L. Geisler, Kayla A. Hagens, Steven G. Lucht, Charles N. Devore, Joseph W. Woody, V, David Scott Thompson
  • Patent number: 9933558
    Abstract: According to one embodiment, an illumination device includes a lightguide, a light-emitting layer, a first reflector, a second reflector, and a third reflector. A distance between the first reflector and the second reflector is greater at a second position farther from the light-emitting layer than at a first position closer to the light-emitting layer. A distance between the lightguide and the third reflector is greater at a fourth position farther from the first reflector than at a third position closer to the first reflector. An emission portion for allowing emission of light emitted from the light-emitting layer is formed between the second reflector and the third reflector.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 3, 2018
    Assignee: Japan Display Inc.
    Inventors: Osamu Itou, Eri Sasaki
  • Patent number: 9494723
    Abstract: Disclosed is a display device. The display device includes: a light source; a light guide plate into which light is incident from the light source; a light conversion member on the light guide plate; and a display panel on the light conversion member, wherein a plurality of scattering parts having a diameter in a range of 90 ?m to 300 ?m are provided in the light guide plate.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: November 15, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Gwang Hei Choi, Soung Kyu Park, Jeong Taek Oh
  • Patent number: 9448340
    Abstract: An optical device comprises an optical diffuser structure embedded between media of substantially the same optical refractive index. The structure comprises a partially reflective optical coating at the interface between the two media. The partially reflective optical coating comprises a relief profile such that, in use, the optical diffuser structure diffuses light in reflection from the partially reflective optical coating and delivers substantially no optical deflection in transmission.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: September 20, 2016
    Assignee: The Technology Partnership Plc
    Inventors: Neil Griffin, Roger Clarke
  • Patent number: 9442239
    Abstract: In one embodiment, a light emitting device includes: a light source which emits light; a light guide portion which has an emission surface which emits light and a back surface which opposes to the emission surface, and which has at the back surface a reflecting portion which the light emitted from the light source enters and which reflects the entering light toward the emission surface; a heat transfer portion which opposes to the back surface of the light guide portion and is provided with an interval which is a wavelength of the light or more being spaced from the back surface; and a support portion which is provided between the reflecting portion and the heat transfer portion, and which keeps the interval between the light guide portion and the heat transfer portion.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: September 13, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuaki Kato, Hiroshi Ohno, Katsumi Hisano, Masataka Shiratsuchi, Tomonao Takamatsu, Tomoyuki Suzuki
  • Patent number: 9423085
    Abstract: There is provided a light emitting module (1) having at least one light emitting element (3) which is arranged to emit light of a primary wavelength, and a wavelength converting element (5) arranged at a distance from the at least one light emitting element (3). The wavelength converting element (5) is arranged to convert at least part of the light of a primary wavelength into light of a secondary wavelength. Further the module (1) comprises a first optical component (7) having surface structures (11) on a surface facing away from the light emitting element (3). Light rays incident on the first optical component (7) at small angles are reflected and light rays incident on the first optical component (7) at large angles are transmitted and bent towards a normal of the first optical component (7). The invention is advantageous in that it provides a compact and efficient light-directing module.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: August 23, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Fritz Helmut Zahn, Susanne Lina Goldbach, Martinus Petrus Joseph Peeters, Rémy Cyrille Broersma, Aldegonda Lucia Weijers
  • Patent number: 9321225
    Abstract: An optical plate includes a substrate having a light emitting surface, a rear surface opposite to the light emitting surface, and a plurality of microstructures that cooperatively define the light emitting surface and each of which parallelly extends in a light traveling direction. Each of the microstructures includes first and second convex portions and a concave portion disposed between and interconnecting the first and second convex portions, and two adjacent ones of the microstructures are connected. Intersections between the microstructures cooperatively define an imaginary plane, and a lowest point of the concave portion is disposed at one side of the imaginary plane opposite to the rear surface of the substrate.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: April 26, 2016
    Assignee: CHI MEI CORPORATION
    Inventors: Hsiu-Fang Hsiao, Chueh-Yang Tsai, Chun-Liang Kuo, Hsin-Hung Chen, Chung-Ping Huang
  • Patent number: 9304242
    Abstract: A display device includes a light guide plate, at least one illuminating element, a side frame, and a display panel. The light guide plate includes a main body and at least one light-incident protrusion part. The main body has a light-emitting surface. The light-incident protrusion part is connected to the main body and has a light-incident surface. The illuminating element is arranged along the light-incident surface and is capable of emitting a light beam. The light beam enters the light guide plate from the light-incident surface and leaves the light guide plate from the light-emitting surface. The side frame is located on the light guide plate. The display panel is located between the light guide plate and the side frame. The side frame and the display panel expose the light-incident protrusion part. The side frame of the display device described herein has the small width.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 5, 2016
    Assignee: Young Lighting Technology Inc.
    Inventors: Wu-Hsieh Lee, Hung-Sen Lin, Chao-Chung Tsen, Wei-Kai Liao, Chi-Lun Chen
  • Patent number: 9291298
    Abstract: A display device is disclosed. The disclosed display device has an excellent appearance through prevention of outward exposure of wirings. The display device is also configured to easily outwardly dissipate heat generated from various electronic elements included in the display device.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 22, 2016
    Assignee: LG ELECTRONICS INC.
    Inventor: Donghyok Shin
  • Patent number: 9229150
    Abstract: A backlight module comprises a backplate having a baseplate and side plates, a direct-lit LED array, edge-lit LED arrays and a light guide panel. The light guide panel is located above the baseplate. The direct-lit LED array is disposed between the baseplate and the light guide panel. The edge-lit LED arrays are disposed at two sides of the light guide panel and facing light incident surfaces thereof respectively. Light scattering structures for scattering light rays are disposed on a light exiting surface or on a bottom surface of the light guide panels. With the LED arrays and the light scattering structures, the light guide panel is divided into three backlight regions. Displaying of the backlight module is controlled region by region by the light scattering structures and the LED drive circuit to improve the brightness of the backlight module and reduce the power consumption of the liquid crystal module.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: January 5, 2016
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Ruilian Yang
  • Patent number: 9223079
    Abstract: A light guide plate and a backlight module are described. The light guide plate includes a main body and a plurality of stripe microstructures. The main body includes a light incidence surface, a light-emitting surface and a light reflective surface. The light-emitting surface is opposite to the light reflective surface, and the light incidence surface is connected between the light-emitting surface and the light reflective surface. The light-emitting surface includes a microstructure region adjacent to the light incidence surface. The stripe microstructures are arranged in the microstructure region, and parallel to a normal line of the light incidence surface.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: December 29, 2015
    Assignee: RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Chia-Yin Chang, Chin-Ting Weng
  • Patent number: 9188727
    Abstract: A light guide plate including a plate body and a plurality of microstructures formed thereon is provided. The plate body has a light entrance surface, a light exit surface orthogonal to the light entrance surface, and at least one side surface neighboring the light exit surface and the light entrance surface. At least one light source is disposed near the light entrance surface, such that light generated by the light source enters the plate body through the light entrance surface and exits from the plate body through the light exit surface. The microstructures are arranged on the light entrance surface and the at least one side surface, and the microstructures on the light entrance surface are convex-shaped and the microstructures on the at least one side surface are concave-shaped.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: November 17, 2015
    Assignee: Wistron Corporation
    Inventors: Yan-Fei Zhu, Tao Lian
  • Patent number: 9176269
    Abstract: A light source module including a light guide plate and a light source is provided. The light guide plate has a light incident surface and a light emitting region, and the light guide plate has a plurality of grooves or protruding patterns thereon. The length of the grooves or the protruding patterns is smaller than the length of the light guide plate. The light source is disposed on the light incident surface of the light guide plate, and the grooves or the protruding patterns of the light guide plate are disposed beside the light incident surface.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: November 3, 2015
    Assignee: Au Optronics Corporation
    Inventor: Super Liao
  • Patent number: 9140843
    Abstract: An apparatus includes a light guide. A first light input section receives light in a first direction into said light guide. First direction-dependent outcoupling structures selectively couple out light propagating in said first direction in said light guide. A second light input section receives light in a second direction into said light guide. Said second direction is different than said first direction. Second direction-dependent outcoupling structures selectively couple out light propagating in said second direction in said light guide.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: September 22, 2015
    Assignee: Core Wireless Licensing S.a.r.l.
    Inventors: Pentti Ahlgren, Pauli Laitinen
  • Patent number: 9128220
    Abstract: A light guiding element has a first principal surface, a second principal surface which opposes the first principal surface, a first lateral surface which intersects with the first principal surface and the second principal surface, and a second lateral surface which opposes the first lateral surface. The light guiding element allows light incoming from the first lateral surface to propagate between the first principal surface and the second principal surface. The light guiding element includes a portion in which a refractive index varies substantially continuously from the first principal surface toward the second principal surface.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: September 8, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takashi Ochi, Masakazu Shibasaki, Iori Aoyama, Yuichi Iyama, Katsuhiro Kikuchi
  • Publication number: 20150138833
    Abstract: The present disclosure relates to a backlight module and a liquid crystal display device including the backlight module. The backlight module includes a light guide plate and a planar reflecting sheet arranged below the light guide plate, wherein a plurality of lattice points are provided on the upper surface of the light guide plate so that the upper surface forms a light-emitting surface, and a plurality of cylindrical projections in contact with the planar reflecting sheet are formed on the lower surface of the light guide plate. With this backlight module, the probability of the lattice points being scratched can be significantly reduced, and the quality of the final product can be improved.
    Type: Application
    Filed: January 21, 2014
    Publication date: May 21, 2015
    Inventor: Hu He
  • Publication number: 20150117057
    Abstract: A light guide element and a light source device using the same are provided. The light guide element has a main body. The main body has a hollow portion with a cone shape and a microstructure pattern formed on the main body. The cone-shaped hollow portion has a bottom portion and a top portion. The bottom portion is located on the bottom surface of the main body, and has a first hollow cross section area. The top portion is opposite to the bottom surface, and has a second cross section area smaller than the first cross section area. The microstructure pattern includes high-density areas and low-density areas to improve a light distribution caused by the cone-shaped hollow portion. The light source device includes the light guide element and a ht emitting diode (LED). The LED is used to emit light into the cone-shape hollow portion through the bottom portion.
    Type: Application
    Filed: January 6, 2015
    Publication date: April 30, 2015
    Inventors: Wei-Hsuan CHEN, Kai-Chun YANG, Yuan-Chen CHUNG
  • Patent number: 9010980
    Abstract: The present invention provides a light guide plate and a backlight module containing the light guide plate. The light guide plate includes a plate body and a coating layer formed on the plate body. The plate body includes a bottom face, a top face opposite to the bottom face, and a plurality of side faces between the bottom face and the top face. The coating layer is formed on at least one side edge of the top face. The coating layer has a refractive index that is greater than or equal to 1 and less than refractive index of the plate body. The light guide plate uses the coating layer formed on the top face to reflect light back into the light guide plate to confine the light within the light guide plate so as to prevent light leakage and ensure light intensity and homogeneity of the light guide plate.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: April 21, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chechang Hu, Hu He
  • Patent number: 9010983
    Abstract: A light guide device for illumination, lighting and display purposes that exhibits an output light having a predetermined, and preferably uniform, angular luminance profile is described. The device comprises a light guide (13) suitable for guiding light coupled thereto and a plurality of extraction features (10, 11) located on one or more surfaces of the light guide. The plurality of extraction features comprises an interleaved pattern of first (11) and second extraction features the arrangement of which provides a means for defining the predetermined angular and spatial luminance profiles for the output light. The device allows for a uniform angular luminance profile to be produced that is maintained even when the light guide is curved or bent.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: April 21, 2015
    Inventor: James Gourlay
  • Patent number: 8985831
    Abstract: A light guide plate includes a main body and a number of micro protrusions. The main body includes a light emitting surface, a bottom surface, and a light incident surface. The bottom surface is opposite to the light emitting surface. The light incident surface connects the light emitting surface and the bottom surface. The protrusions are randomly positioned on the light emitting surface, and are used for reflecting light rays towards random directions.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: March 24, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Li-Ying Wang He
  • 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
  • Publication number: 20150055373
    Abstract: A light guide plate includes a light incident surface, a bottom surface connected to the light incident surface, and a light output surface facing away from the bottom surface. The light output surface is a roughened surface. A number of microstructures are formed on the light output surface. A method for making the light guide plate is also described.
    Type: Application
    Filed: August 25, 2014
    Publication date: February 26, 2015
    Inventor: YUNG-CHANG TSENG
  • Publication number: 20150049509
    Abstract: Optically patterned waveguides and systems employing optically pattered waveguides are provided. The optically patterned waveguide is configured for use in a lighting system and arranged perpendicular to an overhead structure, such as a ceiling. The optically patterned waveguide includes major surfaces that are patterned with a plurality of elongated facets formed into the major surfaces and extending in a direction parallel to the length of the waveguide. The optically patterned waveguide provides illumination patterns having increased uniformity.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Applicant: General Electric Company Global Research
    Inventors: Mark Marshall Meyers, Steven Robert Hayashi
  • Publication number: 20150042923
    Abstract: The present invention discloses light-guiding plate, backlight module and liquid crystal display device. The light-guiding plate includes first incident surface, light-emitting surface, bottom surface and side surface; wherein light-emitting surface being connected to first incident surface, bottom surface being connected to first incident surface, light-emitting surface being connected to side surface, bottom surface being connected to side surface, the angle between first incident surface and side surface connected to first incident surface being obtuse, and light-emitting surface including a plurality of trenches radiating from first incident surface. The radiating trenches disposed on light-emitting surface have certain converging effect on light propagating in light-guiding plate. The propagating light will propagate along the trenches.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 12, 2015
    Inventor: Hu He
  • Patent number: 8944662
    Abstract: Extended area lighting devices, which are useful e.g. as luminaires, include a light guide and diffractive surface features on a major surface of the light guide. The diffractive surface features are tailored to extract guided-mode light from the light guide. The light guides can be combined with other components and features such as light source(s) to inject guided-mode light into the light guide, light source(s) to project light through the light guide as non-guided-mode light, a framework of interconnected support members (attached to multiple such light guides), and/or a patterned low index subsurface layer that selectively blocks some guided mode light from reaching the diffractive surface features, to provide unique and useful lighting devices. Related optical devices, and optical films having diffractive features that can be used to construct such devices and light guides, are also disclosed.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: February 3, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: David S. Thompson, Zhaohui Yang, Matthew S. Stay
  • Publication number: 20150016148
    Abstract: A light guiding plate and a light guiding device are provided, and the light guiding plate is implemented in the light guiding device. The light guiding device includes a side light source emitting light to the light guiding plate. The light guiding plate includes a first surface, a second surface and a third surface. The second surface is opposite to the first surface, and the third surface is adjacent to the first surface and the second surface. The second surface includes plural light guiding units, and each of the light guiding units includes a total reflection concavity and a light emitting convexity. The light emitting convexity surrounds the total reflection concavity.
    Type: Application
    Filed: December 5, 2013
    Publication date: January 15, 2015
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chih-Chiang CHAO, Po-Ling SHIAO, Mei-Chun LAI
  • Publication number: 20140376264
    Abstract: A light guide plate includes a main body including a light emitting surface. A number of glues, each with a different, and lower, refractive index when cured, are applied through a covering plate onto the light emitting surface. Each type of glue forms a layer on the layer below, the stack of layers forms a plurality of spaced micro-rods on the light emitting surface. Each layer in the micro-rod thus includes top and bottom and side surfaces. The different refraction indexes of each layer, reducing along a direction from the light emitting surface to the top surface of each rod, causes light to be emitted substantially equally from the periphery of each layer in the micro-rod as well as from the top of each rod. The maximum refraction index of any layer in the micro-rod is not greater than that of the main body.
    Type: Application
    Filed: July 24, 2013
    Publication date: December 25, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHIH-CHEN LAI
  • Patent number: 8911135
    Abstract: A light guide plate includes a light incident surface, a bottom plate, a light emitting surface opposite to the bottom plate, and a side surface opposite to the light incident surface. The light incident surface is perpendicular to the light emitting surface. The bottom surface is imaginarily divided into rectangular sub-portions which are equal in area and shape. A portion of the sub-portions close to the side surface constitutes a main portion. Each sub-portion uniformly distributes micro protrusions. Along a direction from the light incident surface to the side surface, the micro protrusion densities of the sub-portions of the main portion gradually ascend, and the difference values of the micro protrusion densities of any two adjacent sub-portions of the main portion gradually ascend.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: December 16, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Li-Ying Wang He
  • Publication number: 20140362604
    Abstract: In order to suppress uneven brilliance of emitted planar light and enhance a rate of light utilization, the present invention provides a backlight unit (1) including: a light guide plate (2) receiving from a light source (31) from a light receiving surface (22) on a side surface and emitting planar light from a light emitting surface on a front surface; and a front side pressing member (5) having a light guide plate pressing portion (52) to press a peripheral portion on the front surface of the light guide plate (2); wherein an attached shape (211) in a concave and convex pattern shape is formed in the light emitting surface (21), and the light guide plate pressing portion (52) is provided with an engagement portion (521) provided with a concave and convex pattern that is engageable with a attached shape (211).
    Type: Application
    Filed: February 20, 2013
    Publication date: December 11, 2014
    Inventor: Junichi Masuda
  • Patent number: 8899815
    Abstract: A uniform reflective light-guide for accompanying an edge light source to form a backlight module for an LCD display includes a light-guiding layer and a reflective layer. The light-guiding layer further defines a light-introducing surface and a light-exiting surface. The light-introducing surface is to allow lights emitted from the edge light source to enter the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights to leave the light-guiding layer. The reflective layer is to reflect the incident lights back to the light-guiding layer. The reflective layer and the light-guiding layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of an air spacing in between. A reflective surface is defined to interface the reflective layer and the light-guiding layer, and a three-dimensional micro-structure is constructed on the reflective surface.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: December 2, 2014
    Assignee: Entire Technology Co., Ltd.
    Inventors: Jia-Jen Chen, Yu-Chun Tao, Yan Zuo Chen, Hao-Xiang Lin, Cheng-Yu Hsieh
  • Patent number: 8899816
    Abstract: A backlight module includes a light guide plate and a light emitting unit. The light guide plate has a first side surface, a second side surface, and a third side surface. The first side surface is located opposite to the second side surface. A height of the first side surface is greater than a height of the second side surface. The third side surface is located between the first side surface and the second side surface and has a light entrance surface and a light exit surface. The light entrance surface is connected to the first side surface and the light exit surface. The light exit surface is connected to the second side surface. An included angle is formed between the light entrance surface and the light exit surface. The light emitting unit is disposed on the light entrance surface.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: December 2, 2014
    Assignee: AU Optronics Corp.
    Inventors: Ya-Lan Lin, Ching-Feng Chen, Cheng-Min Tsai, Ming-Sheng Lai, Ren-Wei Huang
  • Patent number: 8882323
    Abstract: Flexible unitary lightguide and a method of making the same are disclosed. The lightguide includes a structured input side that includes a first pattern having smaller features superimposed on a second pattern having larger features. The lightguide further includes a structured top surface that includes a first region and a different second region. The first region includes a plurality of discrete light extractors for extracting light that propagates within the flexible unitary lightguide by total internal reflection. The second region includes a taper portion for directing light from the structured input side to the first region. The light extractors form a periodic array that has a first period along the length of the flexible unitary lightguide. The first period is such that substantially no visible moir fringes occur when the flexible unitary lightguide is used as a backlight in a pixelated display.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 11, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey L. Solomon, Brian A. Kinder, Gary T. Boyd
  • Publication number: 20140321163
    Abstract: A light guide device includes a light guide plate and a reflector. The light guide plate includes a light transmissive body with opposite first and second surfaces, and a plurality of first and second light guide structures extending along a first direction. The first light guide structures are disposed on the first surface, and the second light guide structures are disposed on the second surface. The reflector includes a reflector body and a plurality of reflecting structures formed on the reflector body and extending along a second direction. The first and second directions are perpendicular to each other. The reflecting structures are formed on one side of the reflector body facing the first surface.
    Type: Application
    Filed: January 7, 2014
    Publication date: October 30, 2014
    Applicant: Radiant Opto-Electronics Corporation
    Inventors: Pei-Ling KAO, Hsueh-Ju CHEN, Ting-Ting HU
  • Patent number: 8870400
    Abstract: An object of the present invention is to configure a lighting device to discriminate the front and back sides of a substrate at low costs. In the lighting device of the present invention, a diffuser plate 30 as an optical member 15 includes: a light-transmissive substrate 32; an optical pattern 33 formed on the substrate 32 and applying an optical action to light; and a discrimination pattern 34 configured to discriminate between a first position (normal position) of the substrate 32 and a second position (non-normal position) of the substrate 32 reversed from the first position, formed on a first plane 30a that is a surface of the substrate 32 on which the optical pattern 33 is formed, and made of the same material as that of the optical pattern 33.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: October 28, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yasumori Kuromizu
  • Patent number: 8858056
    Abstract: The present invention relates to a light guide plate and a corresponding backlight module. The light guide plate has a plate body, a light-exiting prism structure and a reflecting prism structure. The reflecting prism structure is mounted on a reflecting area on a light-exiting surface of the plate body. The light guide plate and the corresponding backlight module can reduce light leakage at the junction between the light guide and a fixing plastic frame by the reflecting prism structure mounted at sides of the light guide plate.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: October 14, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Kuangyao Chang
  • Patent number: 8851734
    Abstract: A light-guiding article has a film substrate that has at least one patterned surface having a plurality of discrete surface features and an incident edge that is substantially orthogonal to the at least one patterned surface. Each surface feature in the plurality of discrete surface features extends along a length direction that is substantially parallel to the incident edge. Taken in cross-section along the length direction, each surface feature has a positively sloped portion, a substantially flat portion, and a negatively sloped portion. A first widthwise cross-section taken at a first position through the positively sloped portion has the same shape as a second widthwise cross-section taken at a second position through the negatively sloped portion.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: October 7, 2014
    Assignee: SKC Haas Display Films Co., Ltd.
    Inventor: Junwon Lee
  • Publication number: 20140293652
    Abstract: A light guide plate includes a rough light emitting surface, a bottom surface opposite to the light emitting surface, and a plurality of microstructures formed on the bottom surface. A cross-sectional surface of each of the microstructures is trapezoidal shaped.
    Type: Application
    Filed: July 30, 2013
    Publication date: October 2, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHEN-HAN LIN
  • Patent number: 8845174
    Abstract: A light-weight and energy-efficient lighting panel is constructed from a light-transmissive and light diffusive extrusion formed to have elongated hollows, which are hollow structures or volumes between two surfaces, at least one of which is transmissive and diffusive. Light projected into the hollow flows through the hollow and part of the light is emitted through the light transmissive and diffusive surfaces. Even though the light sources are located at the edges of a panel, the surface of the panel appears to be uniformly light by light sources distribute directly behind the panels rather than along the edges.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 30, 2014
    Inventors: Nicholas Jackson, Brian Retzke
  • Patent number: 8834001
    Abstract: An edge light backlight device includes a light guide plate having a base portion and microstructures, LEDs, and a reflective plate. The base portion has a light emitting side, a rear side, and a light incident side. The microstructures are formed on one of the light emitting side and the rear side and each of which extends from the light incident side in a longitudinal direction. Each of the microstructures includes a curved surface with a radius of curvature (R). The light guide plate has a thickness (T). R/T ratio ranges from 0.04 to 0.15 and each of the microstructures has a height ranging from 20 ?m to 300 ?m so that the light guide plate has a performance of local lighting ranging from 1% to 40%.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: September 16, 2014
    Assignee: Chi-Mei Corporation
    Inventors: Cheng-Feng Lin, Chun-Liang Kuo, Hsin-Hung Chen
  • Patent number: 8833997
    Abstract: A light guide bar and an optical touch panel utilizing the light guide bar are provided. The light guide bar is applied to an optical touch panel with a sensing area. The light guide bar includes a bar body and a plurality of prisms. The bar body has a first receiving end, a light-exiting surface, and a structure surface. The light-exiting surface is opposite to the structure surface and faces the sensing area while the first receiving end is connected between an end of the light-exiting surface and an end of the structure surface. The prisms are formed on the structure surface. Each prism includes a first surface and a second surface respectively having a first angle and a second angle with respect to the structure surface, wherein the second surface is closer to the first receiving end than the first surface, and the second angle is larger than or equal to the first angle.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: September 16, 2014
    Assignee: Briview Corporation
    Inventor: Huang-Jen Chen
  • Patent number: 8834004
    Abstract: Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: September 16, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: David S. Thompson, Zhaohui Yang, Matthew S. Stay, Vivian W. Jones