Film Or Coating Patents (Class 362/627)
  • Patent number: 10432111
    Abstract: Provided is a self-repairing energy generating element using a shape memory polymer, including a first electrode; a shape memory friction layer made of the shape memory polymer on the first electrode and having a microbump pattern formed on a surface thereof; a second electrode disposed apart from the shape memory friction layer; and an opposing layer formed on the second electrode and configured to face the shape memory friction layer.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: October 1, 2019
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Sang-Woo Kim, Jeong Hwan Lee, Hey Jung Park, Keun Young Lee, Sang Hyun Kim
  • Patent number: 10353244
    Abstract: This present disclosure relates to the field of display technologies and provides an edge-lit backlight module and a liquid crystal display device. The edge-lit backlight module of the present disclosure includes a light source, a light guide panel and a reflector. The light source is arranged on a light entering side of the light guide panel, and the reflector is arranged below the light guide panel, a bottom surface of the light guide panel faces towards the reflector, and a plurality of dots are arranged on the bottom surface at intervals. The reflector is bonded on the bottom surface of the light guide panel through a glue layer, and the glue layer is provided with light transmission holes at positions of the dots.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: July 16, 2019
    Assignees: QINGDAO HISENSE ELECTRONICS CO., LTD., HISENSE INTERNATIONAL CO., LTD., HISENSE USA CORPORATION
    Inventors: Kejian Ou, Dengyin Zhang, Xiping Wen, Yao Xu
  • Patent number: 10324249
    Abstract: A display device includes a prism sheet between a display cell and a light guiding plate. The prism sheet includes a plurality of prisms having a constant apex angle continuously arranged in a second direction on a surface thereof opposed to a light-exiting surface of the light guiding plate. Each of ridge lines of the prisms extends in a first direction. Each prism has a first inclined face on a side on which light from the light guiding plate is incident and a second inclined face on a side reflecting the incident light. An area of the first inclined face is made smaller than an area of the second inclined face, and an area of a light-emitting region in the prism sheet is made larger than an area of a non-light-emitting region.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: June 18, 2019
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Oshima, Masaki Nishikawa, Yasuhisa Shiraishi
  • Patent number: 10288924
    Abstract: A liquid crystal display includes a display panel; and an optical film on a bottom surface of the display panel, the optical film including a polarizer; a support sheet on a bottom surface of the polarizer; and a prism sheet on a bottom surface of the support sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet. The prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: May 14, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Sejeon Park, Sudong Roh, Wonjong Cho
  • Patent number: 10108040
    Abstract: A liquid crystal display and a method of manufacturing the same are discussed. The liquid crystal display includes a display panel, a polarizer attached to a lower surface of the display panel, a support sheet positioned on a lower surface of the polarizer and integrated with the polarizer, a first UV resin layer positioned on a lower surface of the support sheet, and a first prism sheet positioned on a lower surface of the first UV resin layer and integrated with the support sheet. The first prism sheet includes a first base sheet and a prism portion positioned on the first base sheet and including at least one first prism pattern including a first hydrophobic portion.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: October 23, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Gunwoo Lee, Hyunwoo Jeon, Sangdae Han
  • Patent number: 10036834
    Abstract: The present invention provides a curved display device, and relates to the field of display technology. The curved display device comprises a plane display panel and a gradient index lens provided at light exit side of the plane display panel, wherein the gradient index lens makes light exiting from the plane display panel converge toward a center of display surface of the curved display device. In the present invention, by adding a gradient index lens to a traditional plane display panel and using refraction effect of light by the gradient index lens, curved display is achieved without curving the display panel, thus poor display caused by curving the display panel is effectively avoided.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: July 31, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Dan Su, Jun Wu, Jieqiong Wang, Wenhai Cui
  • Patent number: 10025023
    Abstract: A display device includes a display panel which displays an image with light, a light guide plate through which the light is guided and which guides the light to the display panel, and an absorption filter provided in plural. The light guide plate defines a light exit surface thereof through which the light is emitted to the display panel and a rear surface thereof opposite to the light exit surface. The absorption filters are provided on the rear surface of the light guide plate. The absorption filters on the rear surface of the light guide plate each include a first filter layer and a second filter layer. The first filter layer has a first refractive index. The second filter layer is on the first filter layer and has a second refractive index lower than the first refractive index.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: July 17, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Junwoo You, Young-min Park
  • Patent number: 10018755
    Abstract: This light diffusion member includes: a substrate having light transmissivity; a plurality of light shielding layers formed on one face of the substrate; and light diffusion portions formed on the one face of the substrate at regions other than the regions where the light shielding layers have been formed. The light diffusion portions have a light-emitting end surface coming into contact with the substrate, a light incident end surface which faces the light-emitting end surface and has a larger area than the area of the light-emitting end surface, and a reflecting face coming into contact with the light-emitting end surface and the light incident end surface, and reflecting light entering from the light incident end surface. The height from the light incident end surface to the light-emitting end surface of the light diffusion portion is greater than the thickness of the light shielding layers.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: July 10, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shohei Katsuta, Yasushi Asaoka, Hideomi Yui, Tsuyoshi Maeda
  • Patent number: 9990094
    Abstract: A transparent composite substrate includes a first transparent substrate, a second transparent substrate, and a binding layer bonding the first transparent substrate and the second transparent substrate with a bond therebetween.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: June 5, 2018
    Inventors: Yuh-Wen Lee, Hsiang-Lung Hsia, Quanfen Dai, Dongmei Ye
  • Patent number: 9874956
    Abstract: A three-dimensional cover plate includes a transparent substrate, a side panel, and a first binding layer. The side panel is bonded to a part of the transparent substrate, and the first binding layer is disposed between the transparent substrate and the side panel to bond the transparent substrate and the side panel.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: January 23, 2018
    Inventors: Yuh-Wen Lee, Hsiang-Lung Hsia, Quanfen Dai, Dongmei Ye
  • Patent number: 9757109
    Abstract: A retractor having a housing having a handle portion at a first end and a blade portion at a second, opposite end. The retractor includes a light system having an organic light source for illuminating the blade portion. The light system is positioned within the housing such that it is fully encased by said housing. A pair of polarized light panels are attached to the blade portion for varying direction of light from the blade portion.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: September 12, 2017
    Assignee: Illumix Surgical Canada Inc.
    Inventors: Anil Duggal, James E. Lyles
  • Patent number: 9671541
    Abstract: Provided is an optical sheet module that includes: a first optical sheet that includes a first base substrate, and a first structurization pattern configured to refract light incident from the first base substrate in a normal direction; a second optical sheet that is formed above the first optical sheet, and includes a second base substrate and a second structurization pattern for refracting the light incident from the second base substrate in the normal direction and intersecting an extension direction of the pattern with an extension direction of the first structurization pattern; and a reflective polarizing sheet that is formed on the second optical sheet, reflects light polarized in the first direction to the lower portion, and transmits light polarized in the second direction to a display, wherein the first optical sheet and the second optical sheet are bonded to each other.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: June 6, 2017
    Assignee: LMS CO., LTD.
    Inventors: Jee Hong Min, Joon Hwan Hwang, Yong Shig Sim
  • Patent number: 9651731
    Abstract: A manufacturing method of the light guide plates, a light guide plate made by the method and a double-side display device comprising the light guide plate. The manufacturing method of a light guide plate comprises: forming a plurality of alternating first grooves (101) and second grooves (102) on a surface of a transparent substrate (100); forming a first reflective layer (300) on a surface of the first groove (101); and forming a transparent protective layer (500) on the entire surface of the substrate. According to the present disclosure, a light guide plate is provided that can be used in the double-side display device.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: May 16, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Heecheol Kim, Yan Wei, Chao Xu, Chunfang Zhang
  • Patent number: 9483078
    Abstract: There is disclosed a mobile terminal including a display unit, a first film having one surface coated with a first adhesive material, the surface coupled to a back surface of the display unit by the first adhesive material, and a front case having a second adhesive material disposed on one surface thereof, the surface coupled to the other surface of the first film by the second adhesive material, wherein an adhesive strength of the first adhesive material is smaller than an adhesive strength of the second adhesive material, such that the back surface of the mobile terminal may be attached to the case to prevent the bezel from increasing.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: November 1, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Insu Song, Yongjin Cho, Jaichul Kim, Jaewook Lee
  • Patent number: 9329324
    Abstract: Embodiments of the present invention disclose a reflecting component and a backlight comprising the same. The reflecting component comprises a reflective layer and a first protective layer provided on the reflective layer, wherein the surface of the first protective layer away from the reflective layer is formed to have one or more recessed structures.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: May 3, 2016
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jian Sang, Haiwei Sun
  • Patent number: 9121976
    Abstract: A light guide plate disclosed in the present disclosure includes a board body, a prism component and at least one optical microstructure. The prism component is disposed on at least one surface of the board body. The at least one optical microstructure is disposed on a top end of the prism component. The optical microstructure includes a first light guiding unit and at least two second light guiding units. A first angle is formed between two inclined surfaces of the first light guiding unit, and the first angle is substantially between 45˜60 degrees. The second light guiding units are symmetrically disposed on opposite sides of the first light guiding unit. A second angle is formed between an inclined surface and a bottom surface of each second light guiding unit, and the second angle is substantially between 10˜60 degrees.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: September 1, 2015
    Assignee: Wistron Corporation
    Inventors: Ya-Ping Niu, Chin-Yung Liu
  • Patent number: 9052424
    Abstract: A backlight module includes at least one light source and a light guide plate. The light guide plate includes at least one light incident surface, a light-emitting surface, a bottom surface, a plurality of lenticular lenses and a plurality of micro dots. The light incident surface is disposed adjacent to the light source, and the light-emitting surface is connected with the light incident surface and forms an angle with the light incident surface. The bottom surface is connected with the light incident surface and disposed opposite the light-emitting surface. The lenticular lenses are arranged on the light-emitting surface in a direction substantially parallel to the light incident surface, and the micro dots are formed on at least the bottom surface. The invention provides a backlight module having high directionality of light propagation and high light-utilization efficiency.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: June 9, 2015
    Assignee: CORETRONIC CORPORATION
    Inventors: Yang-Ching Lin, Tzeng-Ke Shiau
  • Publication number: 20150131311
    Abstract: Optical constructions use a low index of refraction layer disposed between a low absorption layer and a high absorption layer to increase confinement of light to the low absorption region of the optical constructions. Low index layers can be used in optical constructions that have multi-tiered light confinement. In these constructions, a first tier of reflection is provided when light is reflected at the surface of a low index optical film which is disposed directly or indirectly on a light guide. A second tier of reflection occurs at the surface of a light redirecting film having appropriately oriented refractive structures.
    Type: Application
    Filed: December 1, 2014
    Publication date: May 14, 2015
    Inventors: John A. Wheatley, Tao Liu, Encai Hao
  • Patent number: 9028123
    Abstract: A reflective display includes a reflective spatial light modulator and a frontlight. The frontlight includes a lightguide formed from a film. The lightguide includes an array of coupling lightguides continuous with a lightguide region of the lightguide. One or more light sources emit light into the array of coupling lightguides. Light from each coupling lightguide combines and totally internally reflects within the lightguide region. Light extraction features frustrate totally internally reflect light within the lightguide region such that the light exits the lightguide toward the reflective spatial light modulator in a light emitting region of the film. A cladding region is optically coupled to the lightguide so light from the light source propagates into the cladding region. A light extracting region is operatively coupled to the cladding region opposite the lightguide, and light in the cladding region is extracted. A method of producing a display is also disclosed.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: May 12, 2015
    Assignee: FLEx Lighting II, LLC
    Inventors: Anthony John Nichol, Zane Arthur Coleman
  • Patent number: 9017793
    Abstract: A light diffusion sheet usable, for example, in backlight units, includes a transparent substrate layer, and a light diffusion layer overlaid on a front face of the substrate layer. The light diffusion layer includes resin beads and a resin binder, the resin beads being provided as monodisperse beads having a mean particle size of 1.5 ?m or greater and 5 ?m or less. A weight ratio of the monodisperse beads to the binder is 2.5 or greater and 3 or less, and an amount of the overlaid light diffusion layer is 3 g/m2 or greater and 10 g/m2 or less. An acrylic resin may be used as the substrate polymer of the monodisperse beads and binder. A coefficient of variation of particle size distribution of the monodisperse beads is preferably equal to or less than 0.2. Advantageously, a gravure coating method is employed for forming the light diffusion layer.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: April 28, 2015
    Assignee: Jiro Corporate Plan Inc.
    Inventor: Minoru Yoshida
  • Patent number: 9010979
    Abstract: The present disclosure provides a composite optical film including a brightness enhancement film, a high refractive-index layer, and an intermediate layer. The brightness enhancement film has a plurality of brightness enhancement structures parallel to each other, and a top surface and a bottom surface opposite to each other. The brightness structures are disposed on the top surface. The high refractive-index layer is disposed on the bottom surface, and includes a film and a plurality of inorganic nano-particles disposed within the film. The intermediate layer is disposed between the brightness enhancement film and the high refractive-index layer.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 21, 2015
    Assignee: AU Optronics Corp.
    Inventors: Yi-Wen Lin, Jen-Yuan Chi
  • 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: 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
  • Patent number: 8979342
    Abstract: A system for illuminating a reflective display or other material from a planar front device and a method of manufacture thereof. The system includes a light guide plate that conducts light from an edge light source across the face of a reflective display. Micro scattering features are formed on an outer surface of the light guide, farthest from the reflective display or material. A stepped index layer is formed on the surface of light guide plate containing the micro scattering features. The stepped index layer has an index of refraction lower than an index of refraction of the light guide plate to assist in the total internal reflection of light injected into the light guide plate. The micro scattering features, light reflecting areas, redirect luminous flux toward the display. In one embodiment, the micro scattering features are formed as white dots on the light guide plate.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: March 17, 2015
    Assignee: barnesandnoble.com llc
    Inventors: Charles Neugebauer, William Saperstein
  • Patent number: 8974105
    Abstract: A planar ion-exchanged glass sheet for out-of-plane light beam coupling includes a first surface, a ion-exchanged first glass region adjacent and parallel to the first surface, a core glass region adjacent and parallel to the first glass region, a ion-exchanged second glass region adjacent and parallel to the core glass region, and a second surface adjacent and parallel to the second glass region. One edge of the glass sheet has an angled end face that is inclined to the plane extends across a thickness of at least one of the glass regions. Methods of making the planar ion-exchanged glass sheet, coupling an out-of-plane light beam into a plane using the planar ion-exchanged glass sheet, and scattering the coupled light to illuminate at least select regions of an exposed surface of the glass sheet are also disclosed.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: March 10, 2015
    Assignee: Corning Incorporated
    Inventors: Vitor Marino Schneider, Alana Marie Whittier
  • 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: 8960986
    Abstract: The present invention provides a reflector plate, which includes a substrate layer and a reflection layer formed on the substrate layer, the substrate layer having a surface that is away from the reflection layer and includes an ink layer printed thereon. The present invention also provides a backlight system, which includes a reflector plate and a back frame that carries the reflector plate, wherein the back frame includes at least two primary assembling pieces, the at least two primary assembling pieces being joined to form a main frame structure of the back frame; and the reflector plate comprises a substrate layer and a reflection layer formed on the substrate layer, the substrate layer having a surface that is away from the reflection layer and comprises an ink layer printed thereon.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: February 24, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Cheng-Wen Que, Yi-Cheng Kuo, Yu-Chun Hsiao
  • Patent number: 8956033
    Abstract: A display device and a backlight module thereof are provided. The display device comprises a backlight module and a panel. The backlight module includes a bottom frame, a light guide, an optical film structure and a top frame. The light guide is disposed above the bottom frame. The optical film structure is disposed above the light guide. The top frame covers a periphery of the optical film structure and covers a lateral side of the bottom frame. The panel is disposed above the top frame.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: February 17, 2015
    Assignees: Innolux Corporation, Innocom Technology (Shenzhen) Co., Ltd.
    Inventors: Adjo Poorter, Jozef Martha Johanna Notermans
  • Patent number: 8944663
    Abstract: A light guide plate having a V-cut structure and a backlight module are disclosed. The light guide plate comprises straight-striped V-cut structure sets and a base plate having a light-entering side. The straight-striped V-cut structure sets are formed on a surface of the base plate adjacent to the light-entering side, wherein each straight-striped V-cut structure set is composed of at least one V-cut element, each V-cut element having a first base angle and a second base angle formed between its respective two inclined surfaces and a horizontal surface of the base plate. The first base angle is located closer to the light-entering side than the second base angle is, and is smaller than or equal to the second base angle. The straight-striped V-cut structure sets have a plurality of second average angle values which are gradually decreased from the light-entering side to a central position of the base plate.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: February 3, 2015
    Assignee: AU Optronics Corporation
    Inventors: Chiung-Han Wang, Jing-Huan Liao
  • Patent number: 8939594
    Abstract: According to one embodiment, a display device includes a light-guiding body, a light source, a wavelength selection transmission layer, and a light control layer. The light-guiding body has a first major surface, a second major surface opposite to the first major surface, and a side face connecting the first major surface and the second major surface. The wavelength selection transmission layer is provided on the second major surface. The first major surface has a plurality of concave portions having inclined faces inclined relative to the first major surface. A ratio of a total area of the plurality of the concave portions projected on the first major surface, relative to an area of the first major surface is 8% to 25%. The plurality of the concave portions is evenly provided in the first major surface.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: January 27, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Miyazaki, Hitoshi Nagato, Hajime Yamaguchi, Rei Hasegawa, Yutaka Nakai
  • Patent number: 8936385
    Abstract: A side-light type spread illuminating apparatus includes a light guiding plate; a light source arranged along a light entering face of the light guiding plate; a double-sided prism sheet arranged at a light emitted face side of the light guiding plate; and an optical member arranged at a back face side facing the light emitted face of the light guiding plate. The optical member includes a light absorption member allowing prevention of reflection of light that has been introduced into the optical member.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: January 20, 2015
    Assignee: Minebea Co., Ltd.
    Inventors: Taku Yamada, Shinji Kawai, Tomoko Ohara
  • Patent number: 8926161
    Abstract: A method for manufacturing a display apparatus includes a first step of arranging a display panel (110) inside a housing (130); a second step including a light guide lens formation step of forming a curved surface (151b) of a light guide lens (151) into a concave-convex surface having surface roughness of 40-250 ?m, and a cover layer formation step of forming a light guide member (150) in such a manner that the curved surface (151b) of the light guide lens (151) is covered by a cover layer (152) to form an image-display-side surface of the cover layer (152) into a non-concave-convex surface; and a third step of bonding the light guide member (150) to a surface of an outer peripheral edge part of the display panel (110) and a surface of the window frame (130).
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: January 6, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Moriwaki, Kenya Ito
  • Patent number: 8899769
    Abstract: According to one embodiment, a display device includes a light-guiding body, a light source, a wavelength selection transmission layer, and a light control layer. The light-guiding body has a first major surface, a second major surface opposite to the first major surface, and a side face connecting the first major surface and the second major surface. The wavelength selection transmission layer is provided on the second major surface. The first major surface has a plurality of concave portions having inclined faces inclined relative to the first major surface. A ratio of a total area of the plurality of the concave portions projected on the first major surface, relative to an area of the first major surface is 8% to 25%. The plurality of the concave portions is evenly provided in the first major surface.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: December 2, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Miyazaki, Hitoshi Nagato, Hajime Yamaguchi, Rei Hasegawa, Yutaka Nakai
  • Patent number: 8899768
    Abstract: A luminance enhancement film having a built-in light diffusing structure. The support substrate incorporates a dispersion of particles for light diffusion. In accordance with the present invention, a separate particle layer is not required in addition to the support substrate layer. The particles are integrated in the unitary support substrate layer. In one aspect of the present invention, the particles are dispersed near at least one of the planar surfaces of the support substrate (i.e., the light input surface light output surface or both of the support substrate. All the particles may be embedded below the surface of the support substrate, or some of the particles may protrude above the surface of the support substrate. In one embodiment of the present invention, the support substrate contains particles that are dispersed only close to its surface and form protrusions at the surface (i.e., the particle dispersed surface is not smooth).
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: December 2, 2014
    Assignee: UBright Optronics Corporation
    Inventors: Nan-I Liu, Yeong-Yuan Zuang, Kong-Hua Wang
  • Publication number: 20140340934
    Abstract: A backlight assembly includes a light guide plate (LGP) having a stepped portion formed at a corner of the LGP, an optical sheet disposed over the LGP and a receiving container receiving the LGP and the optical sheet. The receiving container includes a bottom plate, first through fourth sidewalls and a first LGP fixing portion. The second sidewall is adjacent to the first sidewall. The third sidewall faces the first sidewall. The fourth sidewall faces the second sidewall. The first through fourth sidewalls are extended upwardly from edge portions of the bottom plate. The first LGP fixing portion is formed at the first sidewall such that the LGP fixing portion corresponds to the stepped portion of the LGP. Therefore, a display device is easily assembled. Furthermore, a defilement that may occur during an assembling process may be reduced to enhance productivity.
    Type: Application
    Filed: August 1, 2014
    Publication date: November 20, 2014
    Inventors: Jin-Soo SHIN, Young-Jae LEE, Jeoung-Gwen LEE
  • Patent number: 8882327
    Abstract: The present invention provides a composite light guide plate having a thickness of more than about 1 mm, for use in LCD backlights or in general illumination devices. In the fabrication method of the present invention the extrusion roll molding process is combined with coating and lamination steps to enable a cost effective roll-to-roll or roll-to-sheet manufacture of the thick composite light guide plate wherein one or both principal surfaces of the light guide plate contain a pattern to enable extraction and redirection of light by the light guide plate from a light source or multiple light sources placed at one or multiple edges of the light guide plate. The composite light guide plate comprises a patterned film and a pre-cut sheet joined together by an adhesive layer.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 11, 2014
    Assignee: SKC Haas Display Films Co., Ltd.
    Inventors: Jehuda Greener, Richard D. Bomba, Herong Lei, Michael R. Landry
  • Patent number: 8870436
    Abstract: A reflector laminate, and backlights and displays incorporating such reflector laminates are disclosed. The reflector laminate includes a substrate and a reflector that are adhered together by a plurality of adhesive protrusions. The adhesive protrusions provide for a plurality of voids between the reflector and the substrate, so that a free reflector surface is adjacent to an air gap between the reflector and substrate. The reflector can include a multilayer interference reflector, and the presence of the air gap ensures high reflectivity for the laminate. The reflector can be adhered to a solid lightguide, a frame enclosing a portion of a backlight, a frame enclosing a hollow lightguide cavity, or an optical sheet positioned at the output surface of a backlight.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: October 28, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Michael A. Meis, Audrey A. Sherman, Mieczyslaw H. Mazurek, Michael F. Weber
  • Patent number: 8870430
    Abstract: A display apparatus includes a transparent light guide plate, a light source provided on at least one end surface of the light guide plate, and a mask provided on a front surface of the light guide plate. The light guide plate is formed of a plurality of reflecting and scattering portions having reflecting and scattering surfaces that reflect a light emitted from the light source and emit the reflected light from a front surface side. The mask allows an observer to visually recognize the light reflected from a reflective portion for the right eye, using the right eye, and the light reflected from a reflective portion for the left eye, using the left eye, whereby the reflected light beams can be stereoscopically recognized due to binocular parallax.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: October 28, 2014
    Assignee: Fujikura Ltd.
    Inventors: Mitsuru Kamikatano, Takashi Tsumanuma
  • Patent number: 8864361
    Abstract: A backlight unit includes: a wiring board having a light source mounted thereon; a light guide plate; a light-shielding pressure-sensitive adhesive sheet; and a light diffusion sheet. The front surface of the light guide plate includes an effective region serving as the planar light source and a light entering region ranging from the end surface into which the light enters to the effective region. The wiring board and the light-shielding pressure-sensitive adhesive sheet each have a part positioned in the light entering region. The light diffusion sheet is arranged from the effective region to the light entering region, and overlaps with the light-shielding pressure-sensitive adhesive sheet in the light entering region. On a side closer to the effective region with respect to the light-shielding pressure-sensitive adhesive sheet, the light entering region is covered with the light diffusion sheet without a gap.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: October 21, 2014
    Assignee: Japan Display Inc.
    Inventors: Munenori Motooka, Nobuyuki Suzuki
  • 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
  • Publication number: 20140301110
    Abstract: The present invention relates to a power generating module and light guiding film thereof. The light guiding film includes a film base and at least one microstructure. The microstructure is disposed on a side surface of the film base. After the input light beams pass through the light guiding film, the total luminous flux of the output light beams with the output angles from 70 to 110 degrees is more than 40% of the total luminous flux of the output light beams with the output angles from 0 to 180 degrees. Therefore, most of the output light beams emit in the normal direction.
    Type: Application
    Filed: October 21, 2013
    Publication date: October 9, 2014
    Applicant: CHI LIN TECHNOLOGY CO., LTD.
    Inventors: YI-HSING CHIANG, TE-HUNG CHANG, JUNG-LIEH TSAI, CHO-HAN FAN
  • Patent number: 8851732
    Abstract: In a light-guide module, a method of manufacturing the light-guide module and a backlight assembly having the light-guide module, the light-guide module includes a light-guide plate (“LGP”) and a thin-film layer. The LGP has a light-incident surface into which lights are incident and a light-exiting surface through which lights exit. The thin-film layer is formed on the LGP. The thin-film layer has a concavo-convex pattern formed on an opposite surface of a surface contacting the LGP. Accordingly, a thin-film layer having a concavo-convex pattern is formed on a light-incident surface of an LGP, so that a reflectance of light incident into the LGP may be decreased. Moreover, a light amount transmitted through the LGP is increased in accordance with a decreasing of reflectance, so that a light transmittance may be increased in total.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Ho Lee, Sang-Won Lee
  • Publication number: 20140293190
    Abstract: The present invention relates to a light guide film for a backlight unit of an ultrathin liquid crystal display device, the light guide film allowing rays of light entering from an end face to exit from a front face side, and including a hard layer (17, 18) having a pencil hardness of at least HB, the hard layer (17, 18) containing a polycarbonate as a principal component, and at least one face of the hard layer being exposed, and the entire light guide film (12) having an average thickness of no less than 100 ?m and no greater than 600 ?m.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: KEIWA INC.
    Inventor: Hironori NAKASHIMA
  • Publication number: 20140286048
    Abstract: The present invention relates to a switchable see-through luminescent system, e.g. for luminous signage, characterized by its mode to exist in two different states, transparent (‘off-state’) and luminescent (‘on-state’), due to the presence of a luminescent material (20), coated on to the transparent surface (10), capable of being excited on command by means of lighting sources (30) (e.g. LEDs) characterized by suitable emission spectra. In the off-state of the luminescent material (20), the surface appears transparent and it is not evident any significant modifications of the optical properties (transparency, color, etc.) of the surface.
    Type: Application
    Filed: November 10, 2012
    Publication date: September 25, 2014
    Inventors: Pietro Riello, Francesco Enrichi, Luca Bellotto, Isidora Freris, Simone Bellan
  • 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
  • Patent number: 8827532
    Abstract: Lightguides are disclosed. More particularly, lightguides that include a lightguiding layer and a light extracting layer having a structured surface are disclosed. The light guiding layer is optically coupled to a first set of structures of the structured surface at given locations, and is not optically coupled to a second set of structures at given locations, thereby producing total internal reflection at the second locations. The selective optical coupling may be achieved by a number of different contemplated means as discussed herein. The lightguides allow for distribution of light along with redirection towards an image viewer without a number of commonly required optical elements in backlights.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 9, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Qingbing Wang, Gary T. Boyd, Tri D. Pham, Robert Lee Erwin, David Scott Thompson
  • Patent number: 8814377
    Abstract: Disclosed herein are a backlight unit and a display apparatus using the same. The backlight unit includes at least one light source, a reflection layer to reflect light emitted from the light source, and a plurality of absorption patterns formed on a portion of the reflection layer adjacent to a light emitting surface of the light source, to partially absorb the light emitted from the light source.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: August 26, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Min Sang Kim, Duk Hyun Yun, Moon Jeong Kim, Jung In Seo, Jeong Hwan Kim, Ji Won Jang
  • Patent number: 8789998
    Abstract: A planar ion-exchanged glass sheet for out-of-plane light beam coupling includes a first surface, a ion-exchanged first glass region adjacent and parallel to the first surface, a core glass region adjacent and parallel to the first glass region, a ion-exchanged second glass region adjacent and parallel to the core glass region, and a second surface adjacent and parallel to the second glass region. One edge of the glass sheet has an angled end face that is inclined to the plane extends across a thickness of at least one of the glass regions. Methods of making the planar ion-exchanged glass sheet, coupling an out-of-plane light beam into a plane using the planar ion-exchanged glass sheet, and scattering the coupled light to illuminate at least select regions of an exposed surface of the glass sheet are also disclosed.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: July 29, 2014
    Assignee: Corning Incorporated
    Inventors: Vitor M. Schneider, Alana M. Whittier
  • Publication number: 20140189982
    Abstract: The present invention discloses a backlight module and an LCD having a positioning structure for fixing an optical film and a frame. The frame includes a side frame having an assembling hole. The optical film is placed on the side frame and includes a protruded ear having a positioning hole. The positioning structure includes: a magnetic member installed inside the assembling hole; an attracted member including a compression part and a positioning pillar, wherein the positioning pillar is connected to the compression part and gets inside the assembling hole through the positioning hole such that the positioning pillar is connected to an attraction hole due to a magnetic effect to make the compression part compress and fix the optical film on the side frame. The positioning structure can fix the optical film in X, Y, and Z directions to raise the positioning reliability, assembling speed, and capacity.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 10, 2014
    Inventor: Quan Li