Combination Of Two Or More Modifiers Patents (Class 362/607)
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Publication number: 20130286679Abstract: A backlight module includes a light guide plate (LGP), a light source, and at least one prism sheet. The LGP includes a light emitting surface, a bottom surface, a light incident surface, and a plurality of first microstructures on the bottom surface. Each of the first microstructure is a recessed structure and includes a first surface and a second surface. An included angle between the first surface and the bottom surface ranges from 15 degrees to 27 degrees. An included angle between the second surface and the bottom surface ranges from 50 degrees to 90 degrees. The light source provides a light beam, and an included angle between a light emitting direction of the light beam emitted from the light emitting surface of the LGP and a normal direction of the light emitting surface is greater than 30 degrees. The prism sheet is disposed above the light emitting surface.Type: ApplicationFiled: April 30, 2013Publication date: October 31, 2013Applicant: CORETRONIC CORPORATIONInventors: Shang-Wei Chen, Min-Yi Hsu, Chao-Hung Weng, Wen-Hsin Lo, Han-Wen Tsai, Ming-Feng Kuo, Ming-Dah Liu
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Patent number: 8568012Abstract: Provided are a lighting unit and a display device including the same. The lighting unit includes a bottom cover having a plurality of sidewalls, light emitting modules each including a board disposed on the bottom cover and a plurality of light emitting diodes mounted on the board, and a light-transmitting resin layer covering the bottom cover and the board.Type: GrantFiled: January 14, 2011Date of Patent: October 29, 2013Assignee: LG Innotek Co., Ltd.Inventor: Joo Hyang Park
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Publication number: 20130279192Abstract: The present invention relates a prism light guide plate and a corresponding backlight module. The prism light guide plate includes a plate body. The plate body has a plurality of bar-shaped prisms disposed on a light-exiting surface of the plate body and at least one light-absorption layer disposed on at least one side surface of the plate body. The present invention disposes the light-absorption layer on the side surface of the plate body to reduce or eliminate the bright lines at the side surfaces of the prism light guide plate so that the technical problem of bright lines occurring at the side surfaces of a conventional prism light guide plate can be effectively solved.Type: ApplicationFiled: May 24, 2012Publication date: October 24, 2013Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Kuangyao Chang, Wei Fan
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Publication number: 20130279191Abstract: 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: ApplicationFiled: April 20, 2012Publication date: October 24, 2013Inventor: Kuangyao Chang
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Publication number: 20130265802Abstract: A light-emitting device includes a transparent light guide plate and a light source that irradiates light onto the light guide plate, in which a plurality of dot-shaped light-emitting concave portions having light output surfaces that output incident light derived from the light source from light-emitting surfaces are formed on the light guide plate, and a diffraction grating, which is an assembly of grooves paralleled at a constant pitch, is formed on each of the light output surfaces of the dot-shaped light-emitting concave portions.Type: ApplicationFiled: June 4, 2013Publication date: October 10, 2013Inventors: Mitsuru KAMIKATANO, Hideki SASAKI, Ren SUZUKI
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Patent number: 8550683Abstract: A converging illuminant device has a flat illuminant, a reflective layer and an enhancement film. The reflective layer abuts the flat illuminant, is grille-shaped and has multiple longitudinal strips and multiple lateral strips. The enhancement film is securely connected with the reflective layer and has an emissive surface. The emissive surface has multiple free-form curved areas, multiple longitudinal lines and multiple lateral lines. The longitudinal lines respectively align with the longitudinal strips. The lateral lines respectively align with the lateral strips. Because the reflective layer is grille-shaped, light definitely passes through central positions of the free-form curved areas, angles of refraction of the light are small and the light can be effectively converged. Consequently, illuminant efficiency and central luminous intensity are increased.Type: GrantFiled: November 3, 2011Date of Patent: October 8, 2013Assignee: Automotive Research & Testing CenterInventors: Yao-Min Ho, Jih-Tao Hsu
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Publication number: 20130258251Abstract: A backlight assembly is disclosed that is capable of enabling easy narrow bezel design and easily radiating heat generated from a light source, and a liquid crystal display device using the same. The backlight assembly includes a bottom cover, a light guide plate placed on the bottom cover, a printed circuit board having an L-shaped form and attached to a bottom surface and inner lateral surface of the bottom cover, and a plurality of Light Emitting Diode (LED) packages being mounted to the printed circuit board, wherein the printed circuit board includes a single metal layer having the L-shaped form and attached to the bottom surface and the inner lateral surface of the bottom cover; and a Resin Coated Copper (RCC) film attached to an inner lateral surface of the single metal layer.Type: ApplicationFiled: September 26, 2012Publication date: October 3, 2013Applicant: LG Display Co., Ltd.Inventors: Sang Dae Lee, Kyeong Kun Jang, Min Su Cho, Young Mee Kim
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Publication number: 20130258707Abstract: The light guide plate has at least two layers which are superposed on each other in the direction almost perpendicular to the light exit surface and contain the scattering particles at different particle concentrations, the scattering particles are polydisperse particles including a mixture of particles with different particle sizes, and the combined particle concentrations in each portion of the light guide plate is different by changing the thicknesses of the first layer and the second layer in the direction almost perpendicular to the exit surface.Type: ApplicationFiled: March 7, 2013Publication date: October 3, 2013Applicant: FUJIFILM CorporationInventor: Osamu IWASAKI
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Patent number: 8545081Abstract: An edge-lit backlight device is disclosed in the present disclosure. The edge-lit backlight device comprises a light guide plate, light sources and a backplate. The light guide plate comprises two wedged plate portions and a rectangular plate portion, the two wedged plate portions are disposed at two sides of the rectangular plate portion respectively, and the wedged plate portions and the rectangular plate portion each comprise a light incident surface and a bottom surface. The light sources are disposed adjacent to the light incident surfaces of the wedged plate portions and the rectangular plate portion respectively. A liquid crystal display (LCD) is also disclosed in the present disclosure. The edge-lit backlight device and the LCD of the present disclosure are simple in structure, allow for regional control functions and can dissipate heat generated by the light sources in a timely and efficient way.Type: GrantFiled: June 22, 2011Date of Patent: October 1, 2013Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Yi-Cheng Kuo, Gege Zhou
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Patent number: 8545062Abstract: A light uniformization structure including a first material layer having a plurality of microstructures in a surface thereof, a second material layer having a plurality of microstructures in a surface thereof, and a spacer layer located between the first material layer and the second material layer. The refractive index of the spacer layer is smaller than a refractive index of the first material layer and a refractive index of the second material layer. A light emitting module including the light uniformization structure is also disclosed.Type: GrantFiled: December 7, 2010Date of Patent: October 1, 2013Assignee: Industrial Technology Research InstituteInventors: Hui Hsiung Lin, Chi Hung Liao, Wen Hsun Yang, Han-Tsung Hsueh
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Publication number: 20130250610Abstract: A surface light guide includes a radiation exit area running along a main extension plane of the surface light guide and includes a light guiding region, which has scattering locations and a coating arranged on a first main area of the light guiding region, wherein radiation coupled in along the main extension plane impinging on the first main area after scattering at the scattering locations has an excessively increased radiation component and the coating reduces in a targeted manner an exit of the excessively increased radiation component from the radiation exit area.Type: ApplicationFiled: March 23, 2011Publication date: September 26, 2013Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Peter Brick, Joachim Frank, Stephan Kaiser, Gerhard Kuhn, Ales Markytan, Julius Muschaweck, Christian Neugirg
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Publication number: 20130250611Abstract: A light source module including a light guide plate, at least one light emitting device, a light-controlling pattern element, and an absorbing pattern element is provided. The light guide plate has a light emitting surface, a first surface opposite the light emitting surface, and at least one opening. The opening passes through the first surface and extends from the first surface toward the light emitting surface. The at least one light emitting device is disposed in the opening and arranged along an arranging direction. The light-controlling pattern element is disposed on the light emitting surface and covers the opening and the light emitting device. The opening faces towards the absorbing pattern element. The absorbing pattern element is disposed besides one of the at least one light emitting device and extends toward a side wall of the opening. Moreover, another two light source modules are also provided.Type: ApplicationFiled: March 21, 2013Publication date: September 26, 2013Applicant: Young Lighting Technology Inc.Inventors: Hsin-Hung Lee, Chiao-Chih Yang, Wei-Ching Wu, Hung-Sen Lin
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Patent number: 8540385Abstract: Provided is a backlight assembly wherein a cost reduction is easier than conventional. A backlight assembly (1) has light-emitting element boards (23a to 23f) that are mounted with light-emitting elements (31) and provided on a frame (3b) around an upper surface (front surface) of a chassis (3), a power supply board (51) that is provided on a back surface of the chassis (3) and supplies power to the light-emitting element boards (23a to 23f), and a relay connector (21) that is held by the chassis (3) and electrically connects between the power supply board (51) and the light-emitting element boards (23a to 23f).Type: GrantFiled: March 31, 2011Date of Patent: September 24, 2013Assignee: Japan Aviation Electronics Industry, LimitedInventor: Takeharu Naito
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Publication number: 20130242605Abstract: An optical diffusing film and a LCD backlight using the same are provided. The optical diffusing film comprises a transparent substrate made of an optically transparent material with a refractive index of 1.4 to 1.8, and a diffusing coating with a refractive index of 1.4 to 1.7 disposed on an upper surface of the transparent substrate, wherein diffusing particles with a refractive index of 1.4 to 1.7 are distributed in the diffusing coating, and the diffusing particles are in close contact with each other, the diffusing coating has a thickness of ½ to ? of the largest particle size of the diffusing particles, and the coating density of the diffusing particles is 103 to 106 particles per square millimeter.Type: ApplicationFiled: November 10, 2011Publication date: September 19, 2013Inventors: Baoliang Zhao, Yuhang Li, Xuliang Wang, Xinli Huo
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Patent number: 8534895Abstract: A light emitting device comprises: a light guiding plate including two facing principal surfaces and circumferential end surfaces connecting the principal surfaces; and a point-like light source facing at least one surface of the circumferential end surfaces of the light guiding plate. One surface of the circumferential end surfaces except the surface where the light source is arranged is a light emitting surface, the thickness of the light guiding plate facing the light source is smaller than the thickness of a portion constituting the light emitting surface and is smaller than the thickness of a light emitting surface of the light source, a diffusing unit is formed on at least one of the principal surfaces; and a reflection member covering peripheries of the light source and the light guiding plate except portions constituting the light emitting surfaces of the light source and the light guiding plate is provided.Type: GrantFiled: February 13, 2012Date of Patent: September 17, 2013Assignee: Minebea Co., Ltd.Inventors: Yasuo Ohno, Takuro Sakai
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Patent number: 8534896Abstract: The invention provides an illumination device comprising a waveguide having a first face, a second face, and a waveguide edge. The device further comprises a LED light source, wherein the LED light source is arranged to couple at least part of the light source light into the waveguide element. The device also comprises a first transmissive reflector, arranged at the first face side, and a second transmissive reflector, arranged at the second face side. The LED light source, the waveguide, the first transmissive reflector, and the second transmissive reflector, are arranged to generate the first and second light in a direction away from the first face and in a direction away from the second face, respectively. Such an illumination device may allow lighting of a room, for instance via the ceiling with uplight, and lighting of a specific area in the room with downlight.Type: GrantFiled: July 5, 2010Date of Patent: September 17, 2013Assignee: Koninklijke Philips N.V.Inventor: Erik Boonekamp
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Patent number: 8534899Abstract: The present invention discloses a backlight module and its light guide plate module. The light guide plate module comprises a plurality of adjacently arranged light guide plates, each of the light guide plates includes a light emitting surface and at least one light entrance surface, and the light emitting surfaces of the light guide plates are on a same plane. The present invention employs the arrangement of a plurality of modular light guide plates to achieve a large light emitting area. Each of the light guide plates corresponds to an independently controlled light emitting module, respectively, so that the side-light type backlight module can realize local dimming function.Type: GrantFiled: July 12, 2011Date of Patent: September 17, 2013Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Ya-jun Yu, Guofu Tang, Yi-cheng Kuo
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Publication number: 20130235614Abstract: An illumination device, such as a backlight for electronic display devices, is disclosed. The illumination device includes a viscoelastic lightguide optically coupled to a light source, and a nanovoided polymeric layer is used in conjunction with the lightguide to manage light emitted by the light source. The viscoelastic lightguide may be a pressure sensitive adhesive.Type: ApplicationFiled: January 13, 2011Publication date: September 12, 2013Inventors: Martin B. Wolk, Michael J. Sykora, Robert L. Brott, William J. Bryan, Erik A. Aho, Martin Kristoffersen, Michael A. Meis, Kevin R. Schaffer, Audrey A. Sherman, John C. Schultz, Mieczyslaw H. Mazurek
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Patent number: 8529822Abstract: A method for manufacturing a flexible optical plate includes steps of: (A) positioning a metallic mask on a surface of a mother substrate; (B) irradiating a carbon dioxide laser beam through the metallic mask to form cavities on the surface of the mother substrate; (C) coating a polymer material on the surface of the mother substrate to fill the cavities; and (D) drying the coated polymer material to form the flexible optical plate, the flexible optical plate having a substrate on the surface of the mother substrate and microstructures protruding from the substrate and each corresponding to one of the cavities.Type: GrantFiled: July 20, 2011Date of Patent: September 10, 2013Assignee: National Cheng Kung UniversityInventors: Chen-Kuei Chung, Chih-Ching Cheng, Shih-Lung Lin, Yuan-Jie Syu, Kun-Lin Sher
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Patent number: 8531625Abstract: A light guide plate for displaying a three-dimensional (3D) image, and a 3D image display apparatus employing the same. The light guide plate includes a transparent body formed in a flat panel shape, and for guiding light with total internal reflection in the transparent body; and a plurality of viewing zone separation units aligned inside the transparent body. Light incident on two side surfaces of the light guide plate is separated into different viewing zones by reflective surfaces of the viewing zone separation units.Type: GrantFiled: December 16, 2010Date of Patent: September 10, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Byung-hee Sohn, Young-hwan Kim, Hong-seok Lee, Hee-kyung Kim
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Publication number: 20130215122Abstract: A display apparatus includes a display, a primary light concentrator, a concentrator light guide, and a solar cell. The primary light concentrator is arranged in tandem with the display, and the primary light concentrator is configured to concentrate incident light into an array of output regions. The concentrator light guide receives light from the primary light concentrator. The concentrator light guide includes light redirecting elements aligned with the output regions of the primary light concentrator to redirect light from the primary light concentrator along the concentrator light guide toward an edge thereof. The solar cell is located adjacent the edge of the concentrator light guide.Type: ApplicationFiled: February 14, 2013Publication date: August 22, 2013Applicant: RAMBUS INC.Inventor: Rambus Inc.
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Publication number: 20130215644Abstract: A spread illuminating apparatus includes: a light guide plate with an emitting surface, a plurality of optical sheets laminated on the emitting surface, a light-blocking member that defines an effective area of the emitting surface, a light source, and a frame for accommodating the above constituents. The plurality of optical sheets are formed such that a position of an edge of each optical sheet on the incident light surface side of the light guide plate is spaced farther apart from the incident light surface of the light guide plate as moving toward a top layer of the optical sheets counted from the emitting surface, and the light-blocking member is fixed to each optical sheet and extends from the incident light surface side of the light guide plate so as to cover a vicinity of the edges of the plurality of optical sheets.Type: ApplicationFiled: February 19, 2013Publication date: August 22, 2013Applicant: MINEBEA CO., LTD.Inventor: Minebea Co., Ltd.
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Patent number: 8511884Abstract: A one-way see-through illumination system is constructed from a light guide panel, a front-illumination image film, and a light injector. The light injector injects light into the light guide panel at a suitable angle for total internal reflection of the injected light at the surfaces of the light guide panel. The image film includes a half-toned front-illuminable image pattern that extracts light from the light guide panel. When active, light from the light guide panel front illuminates the image pattern for viewing by a front-side view, while a back-side viewer can see through the image pattern.Type: GrantFiled: August 10, 2011Date of Patent: August 20, 2013Inventor: Kevin G. Donahue
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Patent number: 8506149Abstract: Disclosed is an optical sheet for use in liquid crystal displays, which simultaneously functions to uniformly diffuse light emitted from a light guide plate and a diffusion plate and to increase brightness, decreases the loss of light, and enables the fabrication of thinner liquid crystal displays.Type: GrantFiled: March 19, 2008Date of Patent: August 13, 2013Assignee: Kolon Industries, Inc.Inventors: Kyung Nam Kim, Hyun Jung Kim, Sang Kyun Kim, Hyun Jin Kim, Jong Min Park, Chung Seock Kang
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Patent number: 8506150Abstract: According to one embodiment, a backlight device includes a light source, a light guide plate, a light beam controller, and a directivity control element. The light guide plate is formed with plural diffusion portions that diffuse light from the light source. The light beam controller is configured to emit plural linear light beams. The directivity control element has plural optical openings. The optical openings extend in a second direction and are arranged in a first direction perpendicular to the second direction. The light beam controller emits the linear light beams that extend in a third direction tilted with respect to the second direction. The light guide plate has a first region in which the diffusion portions are formed in the third direction and a second region in which no diffusion portions are formed, the first region and the second region being arranged alternately in the first direction.Type: GrantFiled: August 17, 2011Date of Patent: August 13, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Masako Kashiwagi, Shinichi Uehara, Masahiro Baba
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Publication number: 20130201720Abstract: Illumination device having a viscoelastic lightguide and a flexible light source is described. The flexible light source includes a plurality of electrically inter-connected light emitting diodes disposed on a flexible mat and optically coupled to the viscoelastic lightguide.Type: ApplicationFiled: August 24, 2011Publication date: August 8, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Audrey A. Sherman, Ellen O. Aeling, Michael A. Meis, Kevin R. Schaffer
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Publication number: 20130194823Abstract: A backlight unit includes a light source capable of emitting light, and a light guide plate including a peripheral surface on which the light from the light source is incident, a main surface provided to be connected with the peripheral surface, and a main surface facing the main surface with the peripheral surface interposed therebetween, the light guide plate including a reflection surface capable of reflecting the light that has entered from the peripheral surface toward the main surface, and a lens formed on the main surface capable of condensing the light reflected by the reflection surface and emitting the light to outside.Type: ApplicationFiled: October 12, 2011Publication date: August 1, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Shugo Yagi, Takeshi Suzuki, Toru Inata
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Patent number: 8496368Abstract: A light guide plate is adapted for a backlight module having at least one light emitting device, and the light guide plate includes a light emitting surface, a surface opposite to the light emitting surface, a light incident surface connected with the light emitting surface and the surface, and a plurality of microstructures disposed on the light emitting surface or the surface. 90 percent or more of the surface or the light emitting surface is flat. At least one of the light emitting devices is disposed beside the light incident surface and capable of emitting a light beam. The light incident surface is capable of making the light beam enter the light guide plate and the light emitting surface is capable of making the light beam transmit outside the light guide plate. A backlight module is also provided.Type: GrantFiled: October 21, 2010Date of Patent: July 30, 2013Assignee: Coretronic CorporationInventors: Kuo-Tung Tiao, Hung-Sheng Huang, Han-Wen Tsai
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Patent number: 8496370Abstract: A light guide plate mold insert includes a molding surface and a number of uniformly distributed dot-shaped recesses. The molding surface is used for forming a reflective surface of a light guide plate. The uniformly distributed dot-shaped recesses are formed in the molding surface. The molding surface includes a number of frosted regions formed by machining the molding surface using a sand-blasting process. Each of the frosted regions includes a number of dot-shaped micro recesses. A distribution density of the micro recesses are greater than that of the recesses.Type: GrantFiled: March 4, 2011Date of Patent: July 30, 2013Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Chia-Ling Hsu
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Publication number: 20130188390Abstract: A color filter comprises a first filter element and a second filter element. The first filter element includes a plurality of arrayed filter regions allowing a first spectral component of incident light to pass and reflecting other spectral components of the incident light. The second filter element includes a plurality of arrayed filter regions allowing a second spectral component of the incident light to pass and reflecting other spectral components of the incident light. The center of the filter regions of the second filter element is deviated from the center of the filter regions of the first filter element so that the light reflected from the first filter element can pass through the second filter element. Thereby is enhanced the energy efficiency of the color filter. An edge-type backlight module using the abovementioned color filter is also disclosed.Type: ApplicationFiled: January 18, 2013Publication date: July 25, 2013Applicant: NATIONAL TSING HUA UNIVERSITYInventor: National Tsing Hua University
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Patent number: 8480267Abstract: A light emitting diode (LED) lighting apparatus including an array of first optic elements overlying an array of LED chips, wherein each of the LED chips is configured to emit light of a first wavelength range through a light emitting surface of the overlying first optic element. The array of first optic elements are also underlying an array of second optic elements, wherein each of the second optic elements is configured to convert light of the first wavelength range to be emitted through the light emitting surface of the underlying first optic element to light of a second wavelength range different from the first wavelength range.Type: GrantFiled: June 28, 2011Date of Patent: July 9, 2013Assignee: Osram Sylvania Inc.Inventors: David W. Hamby, Adam M. Scotch, John H. Selverian
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Patent number: 8480280Abstract: A luminescent display has a plurality of individual discreet phosphor elements (33) on a glass plate separated from one another, filler material (45) between the phosphor elements and reflective film over the individual phosphor elements (33). The filler material (45) can be white and contact the sides of the phosphor elements (33). The filler material (45) can have a peak height that is at least half of the height of the individual phosphor elements (33) between which the filler material (45) lies.Type: GrantFiled: June 28, 2006Date of Patent: July 9, 2013Assignee: Thomson LicensingInventor: James Kleppinger
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Publication number: 20130170247Abstract: 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: ApplicationFiled: December 26, 2012Publication date: July 4, 2013Inventors: Yang-Ching LIN, Tzeng-Ke Shiau
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Publication number: 20130170248Abstract: The present invention relates to a backlight unit with sag control patterns, comprising a light source formed in a side surface of a light guide plate; and a plurality of optical patterns formed on a lower surface of the light guide plate, sag of the plurality of optical patterns increasing as the optical patterns become more distant from the light source. By controlling sag of optical patterns formed in a light guide plate, efficiency of light emitted from a backlight unit can be improved and uniformity of the light can be maintained. Also, since sag of optical patterns can be controlled, by increasing the number of optical patterns (by improving fill factor), light efficiency and uniformity can be controlled easily. Also, compared with a conventional method for manufacturing white dot patterns, white dot patterns can be more efficiently manufactured in terms of development time and costs.Type: ApplicationFiled: May 2, 2011Publication date: July 4, 2013Applicant: LG INNOTEK CO., LTD.Inventors: Dong Hyun Lee, Dong Mug Seong, Beom Sun Hong, Jun Phill Eom
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Publication number: 20130170246Abstract: A backlight unit integrally formed with conductive, chemically toughened glass and method for fabricating the same is disclosed. The integrally formed backlight unit uses conductive, chemically toughened glass as substrate and comprises a diffusion layer, a light guide layer, an optical microstructure layer, a transparent layer, a reflective layer and a light source module. The integrally formed backlight unit is fabricated using photochemical lithography, printing-coating, and ultrasonic hot melt adhesion processes, and offers the advantages of high luminance, ultra thinness and high efficiency in fabrication. The backlight unit product can be designed as bottom lit or edge lit and used mainly for the illumination of keyboards or non-self-luminous display devices.Type: ApplicationFiled: December 5, 2012Publication date: July 4, 2013Inventor: Shui-Lung Chen
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Patent number: 8475028Abstract: A light emitting diode (LED) night vision imaging system (NVIS) lens apparatus for use in filtering of a plurality of night-mode LEDs is provided. The lens apparatus includes an optical carrier material having a plurality of apertures disposed and arranged such that, when the lens apparatus is coupled to an LED backlight, each of the plurality of apertures allows light from a corresponding day-mode LED to be transmitted therethrough without filtering. The lens apparatus also includes filter material coupled to and supported by the optical carrier material. The filter material is disposed and arranged on the optical carrier material such that, when the lens apparatus is coupled to the LED backlight, light from each of a plurality of night-mode LEDs is filtered by the filter material. Backlight assemblies and displays are also provided.Type: GrantFiled: October 29, 2009Date of Patent: July 2, 2013Assignee: Rockwell Collins, Inc.Inventors: James D. Sampica, Gary N. Prior, Tracy J. Barnidge, Paul R. Nemeth, Albert N. Stuppi
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Patent number: 8475033Abstract: A first aspect of the invention relates to a luminescent object comprising an aligned polymer that contains an oriented photoluminescent material, said aligned polymer having a pretilt angle of 10-90°. The luminescent object according to the present invention may advantageously be employed in luminescent solar concentrator systems as it enables highly efficient transportation of radiation emitted by the photoluminescent material following exposure to incident solar light. Another aspect of the invention concerns a photovoltaic device comprising an electromagnetic radiation collection medium containing the aforementioned luminescent object and a photovoltaic cell capable of converting optical radiation to electrical energy which is optically coupled to the luminescent object. Further aspects of the invention include a fluorescent light activated display and a room lighting system comprising the aforementioned luminescent object.Type: GrantFiled: February 16, 2006Date of Patent: July 2, 2013Assignee: Koninklijke Philips Electronics N.V.Inventors: Michael G. Debije, Cees W. M. Bastiaansen, Dick J. Broer, Michael J. Escuti, Carlos Sanchez
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Patent number: 8469574Abstract: An optical component is provided in the present disclosure. The optical component, which can be used in a backlight module or a display apparatus, comprises a substrate and optical medium poles embedded in the substrate. A refractive index difference between the substrate and the optical medium poles is greater than 0.4. A backlight module and a display apparatus are also provided.Type: GrantFiled: July 15, 2010Date of Patent: June 25, 2013Assignee: Chi Lin Technology Co., Ltd.Inventors: Yi-Hsing Chiang, Te-Hung Chang
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Patent number: 8469573Abstract: The present invention relates to a light guide plate and back light module having the same. The light guide plate includes a light guide plate body and a plurality of microreliefs. The light guide plate body has a light-emitting surface and a reflecting surface. The microreliefs are disposed on the reflecting surface. Each of the microreliefs has an outer surface and a base area. The outer surface is a curved surface, and the base area contacts the reflecting surface. A ratio of the totally height of each of the microreliefs to the diameter of the base area of each of the microreliefs is between 1/7 and ¼. As a result, the light guide plate has higher light extraction efficiency.Type: GrantFiled: September 21, 2010Date of Patent: June 25, 2013Assignee: Chi Lin Optoelectronics Co., Ltd.Inventors: Hsi-Hsin Shih, Chien-Tsung Wu, Chih-Hao Tsai, Chin-Ming Wang, Hung-Wen Wang
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Patent number: 8467013Abstract: This invention relates to a light guide device and methods of manufacture. The light guide device is suitable for use in a range of applications, particularly in connection with the backlighting of displays, for example, liquid crystal displays. The light guide device comprises a combination of guide layers and one or more scattering structures in order to mask the appearance of one or more light sources.Type: GrantFiled: November 25, 2008Date of Patent: June 18, 2013Assignee: ITI Scotland LimitedInventor: James Gourlay
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Patent number: 8459857Abstract: A planar light source device comprising: a plurality of point light; a light guide plate including an incident surface, wherein the light spread out into a planar shape and the light guide plate emits the light from an emitting surface; and a frame including an opening, wherein the frame has a protrusion that is provided on a light source side of a peripheral end portion of the emitting surface of the light guide plate, wherein the point light sources are arranged at the light source side, wherein the protrusion has difference widths parallel to the emitting surface, and wherein a width of a portion of the protrusion, which corresponds to the position where the point of the point light source is arranged, is wider than a width of a portion of the protrusion, which corresponds to a position between the point light sources.Type: GrantFiled: March 23, 2011Date of Patent: June 11, 2013Assignee: Mitsubishi Electric CorporationInventors: Koichi Shibata, Takuya Sakamoto
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Patent number: 8456591Abstract: A liquid crystal display device includes a liquid crystal display panel, and a backlight which is arranged on a back surface of the liquid crystal display panel, wherein the backlight includes a plurality of optical sheets, and at least one optical sheet is displaced so as to adjust a viewing angle.Type: GrantFiled: October 29, 2009Date of Patent: June 4, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Tetsuya Oshima, Hirotaka Imayama, Yasuhisa Shiraishi, Yoshiharu Nagae
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Patent number: 8454218Abstract: An illuminating apparatus includes a plurality of light source units and a light guide plate. The light guide plate has a flat part and a protruding part, wherein the light source units provide a side light beam into the light guide plate at an edge surface, the side light beam is guided in the light guide plate and exits at the protruding part.Type: GrantFiled: May 20, 2010Date of Patent: June 4, 2013Assignee: Young Lighting Technology Inc.Inventors: Wei-Chih Wang, Udo Custodis, Wen-Chiao Chang
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Publication number: 20130135892Abstract: A light guide apparatus for an electronic device is described. The light guide apparatus includes a light guide having a first surface and an second surface; a light source, the light guide and the light source being arranged to couple light from the source into the light guide through the second surface of the light guide, the second surface and the light source defining a gap therebetween; and a reflector positioned above the light source and the light guide, and extending over at least a portion of the gap and at least a portion of the front surface of the light guide.Type: ApplicationFiled: November 28, 2011Publication date: May 30, 2013Applicant: RESEARCH IN MOTION LIMITEDInventors: Hsin Chin LEE, Bergen Albert Fletcher, Antanas Matthew BROGA
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Publication number: 20130135895Abstract: A surface light source device is provided. In a rear surface of a light guide plate (10), a groove (18) is formed crossing a center portion of the light guide plate (10). LEDs (12) are arranged linearly in the groove (18), and light enters the light guide plate (10) from side surfaces of the groove (18). Mirror-finished reflective sheets (14) are bonded at edge faces of the light guide plate (10) so that light is mirror-reflected to return toward the light guide plate (10), to thereby improve in-plane uniformity of exit light. Further, light enters a thin light guide plate (10c) provided above the groove (18) from light guide plates (10a, 10b) provided on both sides of the groove (18), and the light exits also from a front surface of the light guide plate (10) provided immediately above the LEDs (12).Type: ApplicationFiled: November 29, 2012Publication date: May 30, 2013Applicant: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventor: Panasonic Liquid Crystal Display Co., Ltd.
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Patent number: 8449164Abstract: A backlight module includes a light guide plate, a plurality of light emitting devices, and a composite optical film. The light guide plate has a light incident surface, a light exit surface, and a bottom surface, wherein the light exit surface is opposite to the bottom surface, and the light incident surface is connected with the light exit surface and the bottom surface. The light emitting devices are disposed beside the light incident surface of the light guide plate. Each of the light emitting devices has a light emitting surface facing to the light incident surface, wherein the light emitting surface provides a light beam. The composite optical film is disposed between the light emitting surface and the light incident surface and includes a diffusion layer and a partially transmissive and partially reflective layer.Type: GrantFiled: October 17, 2011Date of Patent: May 28, 2013Assignee: Young Lighting Technology Inc.Inventor: Ming-Hsien Su
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Patent number: 8449167Abstract: A backlight unit includes a lower frame comprising an opening; a light source arranged in the opening; a light guide plate arranged in the opening; and an upper frame arranged above the lower frame. The unit is so arranged that if one side of a projection (e.g., in the upper frame) is made in contact with one side of a hole (e.g. in the lower frame), then the first side end portion on the first overall end of the side surface of the upper frame is located approximately in the same plane with a first side end portion on the first overall end of the side surface of the lower frame, and the second side end portion on the second overall end of the side surface of the upper frame extends beyond the second side end portion on the second overall end of the side surface of the lower frame.Type: GrantFiled: May 15, 2009Date of Patent: May 28, 2013Assignee: Nichia CorporationInventor: Ryosuke Wakaki
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Patent number: 8449163Abstract: A backlight module includes at least one light emitting device capable of emitting a light beam, a light guide plate, and a thermal insulation light guide element. The light guide plate has two surfaces opposite to each other and a side surface connecting the two surfaces. The light emitting device is disposed beside the side surface. The light beam enters the light guide plate through the side surface. The thermal insulation light guide element has a light incident surface and a light emitting surface. The light incident surface having at least one first recess is located in a transmission path of the light beam and between the light emitting device and the side surface. The light emitting surface is disposed between the light incident surface and the side surface. The glass transition temperature of the thermal insulation light guide element is higher than that of the light guide plate.Type: GrantFiled: September 14, 2010Date of Patent: May 28, 2013Assignee: Young Lighting Technology Inc.Inventors: Chiao-Chih Yang, Lei-Ken Hung, Hsin-Tse Tsai, Yi-Yu Tsai
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Patent number: 8449162Abstract: A backlight module includes a light guide plate, an optical film set, and at least one light emitting element. The light guide plate has a first light-emitting surface, a bottom surface, and a first light incident surface. The optical film set on the first light-emitting surface includes at least one optical film having a second light incident surface, a second light-emitting surface, and a side surface. The side surface of the optical film and the first light incident surface of the light guide plate are at the same side, and at least one notch is disposed on the side surface. The light emitting element is adjacent to the first light incident surface and capable of emitting a light beam. The light beam is capable of entering the light guide plate through the first light incident surface and being transmitted to the optical film set via the first light-emitting surface.Type: GrantFiled: August 18, 2010Date of Patent: May 28, 2013Assignee: Coretronic CorporationInventors: Wei-Hsuan Cheng, Li-Min Hsu
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Publication number: 20130128611Abstract: An image display device includes an image generating device, a light guide unit, and a light beam expanding device. The light guide unit includes a light guide plate, a first deflector, and a second deflector. The light beam expanding device expands a light beam incident from the image generating device along the Z direction and outputs the light beam to the light guide unit when the incident direction of light incident on the light guide plate is defined as the X direction and the propagation direction of light in the light guide plate is defined as the Y direction. The light beam expanding device is composed of a first reflective mirror on which light from the image generating device is incident and a second reflective mirror on which light from the first reflective mirror is incident and that outputs light to the light guide unit.Type: ApplicationFiled: November 15, 2012Publication date: May 23, 2013Applicant: Sony CorporationInventor: Sony Corporation