Particular Application Patents (Class 362/602)
  • Publication number: 20130027966
    Abstract: Disclosed is a backlight unit and a display device using the same, which includes a first reflector, a second reflector 300 and at least one light source module 100 disposed between the first and second reflectors, wherein a back surface of the first reflector comprises an inclined plane 201 and a flat surface 202, with facing the second reflector, and the inclined plane is adjacent to the light source and the flat surface is extended from an end of the inclined plane, with the inclined plane and the flat surface being collinear.
    Type: Application
    Filed: January 31, 2012
    Publication date: January 31, 2013
    Inventors: Se Jin Ko, Jin In Lee
  • Publication number: 20130027967
    Abstract: In a light guide plate used in a lighting device, light-emitting elements are arranged at first intervals. However, the light emitting elements are partly arranged at second interval which is larger than the first intervals. Therefore, a rectangular shaped second diffusing areas formed by grooves are provided in an outer edge area arranged between a first diffusing area having a plurality of grooves (diffusing pattern) formed thereon and an end portion of the light guide plate so as to have a width smaller than the second intervals so as to face areas in which the light emitting elements are arranged at the second intervals.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 31, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Nobutaka URANO, Yoichi MOMOSE
  • Publication number: 20130027968
    Abstract: An illumination apparatus includes: a light guiding plate; a plurality of light-emitting elements disposed along a side-end surface of the light guiding plate that serves as a light-entry portion, each of the plurality of light-emitting elements having a light-emitting surface facing toward the side-end surface; a light source substrate that extends along the light-entry portion and has the plurality of light-emitting elements disposed thereon on one surface side that faces the light-entry portion; and a connector member, held on another surface side of the light source substrate that opposes the one surface side, for supplying power to the plurality of light-emitting elements.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 31, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Nobutaka URANO, Yoichi MOMOSE
  • Publication number: 20130027965
    Abstract: A display apparatus includes a display panel which displays an image, a backlight unit which provides light to the display panel, a heat sink plate adjacent to the backlight unit, the heat sink plate including a catch portion on one side surface thereof, and a mold frame between the display panel and the backlight unit, the mold frame including a first hook which is coupled with the catch portion.
    Type: Application
    Filed: January 16, 2012
    Publication date: January 31, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Cheolyong NOH, Hyunchul BAE, Seongsik CHOI
  • Publication number: 20130021818
    Abstract: A display device includes a display panel which displays an image, a backlight unit which supplies the display panel with light, an upper cover, and a lower cover. The upper and lower covers accommodate the display panel and the backlight unit. The backlight unit includes light guide plates spaced apart from each other, a light source part, an optical member and an optical diffusion member overlapping a space between the light guide plates. The optical diffusion member includes a diffusing part and a supporting part. The diffusing part faces the optical member, overlaps the space between the light guide plates, and diffuses light emitted from the light source part toward the optical member through the space between the light guide plates. The supporting part protrudes from a surface of the diffusing part which is opposite to the optical member, and is in a space between the light sources.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 24, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Hwan BAEK, Eui Jeong KANG, Chan-Jae PARK, Young-keun LEE
  • Publication number: 20130016521
    Abstract: Disclosed are a backlight unit and a display apparatus using the same. The backlight unit includes a light guide plate including first and second grooves, and light source modules disposed within the second grooves. The first grooves are disposed on the upper surface of the light guide plate, and the second grooves are disposed on the lower surface of the light guide plate, and the first grooves are disposed between light sources of the light source module.
    Type: Application
    Filed: February 21, 2012
    Publication date: January 17, 2013
    Inventors: Sang Hyeok Jung, Moon Jeong Kim, Jeong Hwan Kim
  • Publication number: 20130016522
    Abstract: A display apparatus includes a backlight unit which generates first light including first blue light, first green light and first red light and a display panel which receives the first light to display an image, where the backlight unit includes: a light emitting diode which generates an ultraviolet ray; a fluorescent substance layer disposed on the light emitting diode, where the fluorescent substance layer includes: a blue fluorescent substance layer which receives the ultraviolet ray and emits blue light; a green fluorescent substance layer which receives the ultraviolet ray and emits green light; and a red fluorescent substance layer which receives the ultraviolet ray and emits red light; and a first band-pass filter which receives the blue light, the green light and the red light and outputs the first blue light, the first green light and the first red light.
    Type: Application
    Filed: May 18, 2012
    Publication date: January 17, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Hwan BAEK, Myeong-Ju SHIN, Yeongbae LEE
  • Publication number: 20130016309
    Abstract: The utility model discloses a backlight module and a liquid crystal display (LCD) using the backlight module. The backlight module comprises a light guide plate and a clamp for fixing the light guide plate. The light guide plate is formed by splicing of more than two sub-light guide plates. The backlight module used for the LCD of the utility model is characterized in that sub-light guide plates of modular design are used, and the light guide plate applicable to any sizes of the LCD can be formed by splicing of the sub-light guide plates. The backlight module has advantages of convenient processing and assembly, productivity improvement, material waste reduction and backlight module cost decrease.
    Type: Application
    Filed: December 3, 2011
    Publication date: January 17, 2013
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Lifeng Wang, Yajun Yu
  • Publication number: 20130016525
    Abstract: Flat illuminating display device with light emitting means to illuminate a film for display of an image applied to a display area, wherein the light emitting means are embodied as at least one light coupling unit arranged laterally at a translucent film thus forming a light duct, wherein the light such fed into the adjacent edge area into the film is reflected by a reflective layer, which is applied on at least one side, to homogeneously spread within the film, wherein a reflection screen to obtain a light emission is provided opposite of the display area to create said display area.
    Type: Application
    Filed: August 3, 2012
    Publication date: January 17, 2013
    Applicant: AIRBUS OPERATIONS GMBH
    Inventors: Sabine Metzech, Karsten Hesse, Angelo Librizzi, Jörg Günther
  • Publication number: 20130016524
    Abstract: An illumination device of a display device is configured such that heat of light-emitting elements is dissipated via a light source substrate, a light source support member made of a metal, and a first frame made of a metal. The illumination device also includes a second frame made of a resin that is disposed such that a closed space is formed along the light source support member between the frame and the light source support member. The second frame has an opening portion that communicates with the closed space, and the first frame and a third frame each has an opening portion at a position that overlaps the opening portion of the second frame, thereby allowing heat of the light-emitting elements to be dissipated through the closed space and an opening which is formed by opening portions.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 17, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoichi MOMOSE, Nobutaka URANO
  • Publication number: 20130016523
    Abstract: In a lighting device of a display device, a plurality of light emitting elements are mounted on a surface of a light source substrate, and the light source substrate is supported by a light source support member by means of a positioning (fixing) structure such as a metal screw. The plurality of light emitting elements are divided into a plurality of blocks, and the emission light amount can be controlled with respect to each of the blocks. Although the head of the screw is exposed on the surface of the light source substrate, the screw is located between adjacent ones of the blocks. Therefore, even though the illuminating light intensity becomes partially discontinuous owing to the presence of the screw, degradation of display quality originating from such discontinuity can be suppressed.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 17, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Nobutaka URANO, Yoichi MOMOSE
  • Patent number: 8353613
    Abstract: A light guide plate includes a plurality of quantum dots on at least one of a surface of the light guide plate and inside the light guide plate, wherein the plurality of quantum dots emit light having a different wavelength than a light incident thereto.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: January 15, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byoung-Iyong Choi, Hong-seok Lee, Jong-min Kim, Eun-kyung Lee
  • Publication number: 20130010233
    Abstract: A light emitting device array includes a substrate including a first region and a second region that is inclined with respect to the first region, a first light emitting device package arranged on the first region, and a second light emitting device package that is arranged on the second region and is inclined with respect to the first light emitting device package at an inclination angle between 90° and 160°.
    Type: Application
    Filed: March 15, 2012
    Publication date: January 10, 2013
    Inventors: Il Seo, Hongboem Jin, Sangwoo Lee
  • Publication number: 20130010493
    Abstract: A lighting apparatus includes a light-guiding plate and a lighting unit. The light-guiding plate includes a light-incident surface and a light-emitting surface. The lighting unit includes a first light source, a second light source and a circuit board. The first and second light sources are disposed on the circuit board, and the light emitted by the first and second light sources enters into the light-guiding plate through the light-incident surface and exits the light-guiding plate through the light-emitting surface. A first distance from the first light source to a reference line of the light-incident surface is not equal to a second distance from the second light source to the reference line.
    Type: Application
    Filed: July 5, 2012
    Publication date: January 10, 2013
    Applicants: CHIMEI INNOLUX CORPORATION, INNOCOM TECHNOLOGY(SHENZHEN) CO., LTD.
    Inventor: Tseng-Hung LIN
  • Patent number: 8351793
    Abstract: Devices and systems are provided for free space optical communication using optical films. Some embodiments involve using an optical film for the transmission and/or reception of light in a free space optical communication system. Some free space optical communication systems may involve devices, such as laptop computers, desktop computers, mobile communications devices, etc., that are configured for communication via an optical film. The optical film may be disposed on a device, on a wall, a window, furniture, etc., according to the implementation. Many types of free space optical communication systems are provided, including line of sight and non line of sight free space optical communication systems.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: January 8, 2013
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventors: Clarence Chui, Manish Kothari
  • Publication number: 20130002948
    Abstract: It is an object of the present invention to obtain high brightness and appropriately correct the chromaticity of a display image, based on the configuration of a lighting device. A liquid crystal display device 10 includes: a liquid crystal panel 11 including a pair of substrates 11a and 11b with a liquid crystal layer 11c between, of which optical characteristics vary by application of an electric field; and a backlight unit 12 that emits light toward the liquid crystal panel 11. The backlight unit 12 includes a light guide member 26 having an end opposed to light sources 24 or 31. Light from the light sources 24 or 31 is guided toward the liquid crystal panel 11 through the light guide member 26. The liquid crystal panel 11 includes a CF substrate 11a including a color filter 19 constituted by a plurality of color sections R, G, B, and Y exhibiting the respective colors of blue, green, red, or yellow.
    Type: Application
    Filed: January 24, 2011
    Publication date: January 3, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Yoshiki Takata
  • Publication number: 20130002963
    Abstract: It is an object of the present invention to obtain high brightness and high color reproducibility in a liquid crystal display device. A liquid crystal display device 10 according to the present invention includes a liquid crystal panel 11 and a backlight unit 12. The liquid crystal panel 11 includes a pair of substrates 11a and 11b, and a liquid crystal layer 11c. The liquid crystal layer 11C includes liquid crystal between the substrates 11a and 11b. The liquid crystal is a substance having optical characteristics that vary with application of an electric field. The backlight unit 12 includes a light source. The back light unit 12 is configured to irradiate light onto the liquid crystal panel 11. At least one of the substrates 11a and 11b of the liquid crystal panel 11 includes a color filter 19 with a plurality of color sections R, G, B, and Y that exhibit the colors of blue, green, red, and yellow, respectively. The backlight unit 12 includes LEDs 24 as the light source.
    Type: Application
    Filed: February 9, 2011
    Publication date: January 3, 2013
    Inventor: Masashi Yokota
  • Publication number: 20130003407
    Abstract: A display apparatus includes a light source part, a light guide plate, and a display panel. The light source part includes first light sources and second light sources alternately arranged to emit a light having a color different from a color of a light emitted from the second light sources. The light guide plate includes an incident surface having at least one light incident surface facing the light source to guide the light. The display panel receives the light from the light guide plate to display an image. A distance between end portions of the incident surface and the first and second light sources disposed and corresponding to each end portion of the light incident surface is different from a distance between a center portion of the light incident surface and the first and second light sources disposed and corresponding to the center portion.
    Type: Application
    Filed: March 16, 2012
    Publication date: January 3, 2013
    Inventors: Juyoung YOON, Hee-Kwang SONG, HanMoe CHA
  • Publication number: 20120327683
    Abstract: Disclosed is a display device. In detail, a liquid micro-shutter display device includes a light source emitting light, a transparent lower substrate positioned in an light path of the light source, an optical conversion unit performing at least one of a function of converting light from the light source into light having a different wavelength band corresponding to a sub-pixel and a function of reflecting ambient light corresponding to a sub-pixel, a transparent upper substrate positioned in an light path of light output from the optical conversion unit, and a liquid micro-shutter positioned between the transparent lower substrate and the transparent upper substrate and opening and closing the path of light or adjusting an open area.
    Type: Application
    Filed: October 12, 2011
    Publication date: December 27, 2012
    Inventor: Youngjoo Yee
  • Publication number: 20120327684
    Abstract: Provided is a light guide plate that is suited for a compact illumination device emitting high-grade light and that allows the orientation thereof to be recognized with ease, an illumination device equipped with the light guide plate, and a display device equipped with the illumination device. Two protrusions (12A, 12B) are formed on a light-receiving face (11r) of a light guide plate (11), and these protrusions (12A, 12B) serve as a recognition member that allows the orientation of a top surface (11u) of the light guide plate (11) to be recognized.
    Type: Application
    Filed: January 14, 2011
    Publication date: December 27, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Hiroaki Isobe
  • Publication number: 20120327682
    Abstract: Disclosed are a backlight unit and a display apparatus using the same. The backlight unit includes a light guide plate, grooves disposed in the light guide plate, the grooves having at least one inclined surface, light source modules disposed within the grooves, and stoppers disposed between the light source modules and the light guide plate, wherein a cross-sectional area of the grooves is larger than that of the stoppers. The stoppers contact at least one of the side surfaces of the grooves, the bottom surfaces of the grooves and the light source modules.
    Type: Application
    Filed: March 7, 2012
    Publication date: December 27, 2012
    Inventors: Min Sang KIM, Moon Jeong Kim, Jeong Hwan Kim, Jung In Seo, Duk Hyun Yun, Sang Hyeok Jung
  • Publication number: 20120327312
    Abstract: Technology of preventing or reducing uneven brightness on a light exit surface of a lighting device is provided. A backlight unit 24 includes an LED light source 28 having directivity and a diffuser plate 20 configured to diffuse light from the LED light source 28. A plate surface 20a of the diffuser plate 20 is exposed to the LED light source 28. The LED light source 28 is arranged such that light therefrom enters the plate surface 20a of the diffuser plate 20 at an entrance angle s of an acute angle.
    Type: Application
    Filed: February 3, 2011
    Publication date: December 27, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Takaharu Shimizu
  • Publication number: 20120327307
    Abstract: Provided are: a light guide plate apparatus including a plurality of light guide plates arranged in parallel in which the middle part in the longitudinal direction of the light guide plates is held by a support body without blocking light diffusion in the inside of each light guide plate; a light source apparatus employing this light guide plate apparatus; a display apparatus in which the luminance distribution is homogenized in the center part of the screen; and a television receiver apparatus employing this display apparatus. A plurality of light guide plates 42 having an approximately rectangular shape and emitting light having entered through the side surface on one shorter side are supported by a support body 41, in plural lines such that the side surfaces on the longer side are facing each other.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 27, 2012
    Inventors: Shinichi Nakamura, Takaharu Kikuchi, Hideto Takeuchi, Eiji Iwata
  • Patent number: 8337034
    Abstract: The invention relates to an illumination device (10) for illuminating a surface, with a lighting element (20) and an illuminating body (30), wherein the lighting element (20) emits an artificial light (21,21?), a housing element (40) comprises the lighting element (20) and supports the illuminating body (30), the illuminating body (30) comprises a transparent light conductive material and is generally overlying the surface, being illuminated. The invention discloses, that the illuminating body (30) comprises a light extraction layer (50), configured to receive and to deflect the artificial light (21,21?) from the lighting element (20) onto the surface.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: December 25, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Cornelis Reinder Ronda, Hugo Johan Cornelissen, Yadong Liu, Xiaoyan Zhu, Bo Liu, Kairaz Sarosh Contractor, Marcellinus Petrus Carolus Michael Krijn, Hendrikus Albertus Adrianus Maria De Ruijter, Theodorus Johannes Petrus Van Den Biggelaar
  • Publication number: 20120320625
    Abstract: Provided is an edge light type planar light source device capable of preventing luminance unevenness. An edge light type planar light source device (4) includes a light guide plate (7) emitting light entering from an end face (74) from a front face, a linear light source unit (11) including LED elements (111) including light emitting surfaces (113) and an LED substrate (112) where the elements are aligned, the surfaces opposed to the end face, a floor face (91) where the plate is disposed, and a locking member (10) erecting on the floor face and inserted in a peripheral portion of the plate from a back face toward the front face, wherein some elements are disposed in a vicinity of the locking member and are disposed on the substrate such that the surfaces are inclined toward the end face to gather the light at the rear of the locking member.
    Type: Application
    Filed: December 6, 2010
    Publication date: December 20, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Yoshitake Ishimoto
  • Publication number: 20120320623
    Abstract: An illuminating device includes a light guide plate; a light source that is located opposite at least two adjacent end faces of four end faces of the light guide plate; and a chassis that has an opening through which light emanating from a light emission surface of the light guide plate passes. At least one optical sheet that includes a corner portion with an interior angle of greater than 90 degrees in a position corresponding to a corner portion of the light guide plate that is sandwiched between the two end faces opposite the light source is disposed between the light emission surface of the light guide plate and the chassis.
    Type: Application
    Filed: March 1, 2011
    Publication date: December 20, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Wada
  • Publication number: 20120320622
    Abstract: Some embodiments may include a device for displaying and illuminating images. The device may include a housing including an interior portion. An opening in the housing may provide access to the interior portion. A viewing aperture may be formed in the housing. The device may include a light guide having a light source. The light guide may be removably received within the housing via the opening. The device may include a graphic medium with an image printed thereon. The graphic medium may be removeably received within the housing via the opening and guided via a guide surface disposed on a portion of the light guide. The graphic medium may be guided via the guide surface and positioned with respect to the light guide such that at least a portion of the image is viewable through the aperture and at least partially illuminated via light originating from the light source.
    Type: Application
    Filed: June 14, 2012
    Publication date: December 20, 2012
    Applicant: LIGHTHEADED VENTURES, LLC.
    Inventor: Gerald R. Sanders
  • Publication number: 20120320010
    Abstract: An interferometric display comprises a backlight with light extraction features formed from a desiccant material within the display. A light source is positioned at one or more edges or corners of the back glass, and the desiccant based features patterned in or on the back glass remove unwanted moisture and create uniform light extraction from the back glass.
    Type: Application
    Filed: August 30, 2012
    Publication date: December 20, 2012
    Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.
    Inventor: Jonathan Charles Griffiths
  • Publication number: 20120320624
    Abstract: An illuminating device includes a substantially rectangular light guide plate that includes at least one end face as a light incident surface, a frame that is arranged to surround the light guide plate, and a light source that is located between the light guide plate and the frame so as to face the light incident surface of the light guide plate. The light guide plate and the frame are integrally molded by two-color molding, and at least a part of the end faces of the light guide plate except for the light incident surface is spaced from the frame. Thus, the illuminating device can be made thinner and lighter without reducing the strength and the brightness.
    Type: Application
    Filed: March 31, 2011
    Publication date: December 20, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiromasa Yamane, Masahi Miwa
  • Publication number: 20120320310
    Abstract: A lighting device includes a light source 30, a light guide 20 provided adjacent to the light source 30 and including a light source light incident surface 21 on which light emitted by the light source 30 enters and a planar light emission surface 22 from which planar light is emitted, and an optical sheet 50 including a planar light incident surface 53 on which the planar light enters, and configured to change a traveling direction of the planar light because a light emission side of the optical sheet 50 has a shape in which plural columnar prisms 51 extending in parallel to the light source light incident surface 21 are arranged side by side. In each of the prisms 51, a distal surface has at least different two kinds of inclination angles.
    Type: Application
    Filed: June 14, 2012
    Publication date: December 20, 2012
    Inventors: Masaya ADACHI, Akiyoshi TOBE, Yasuhisa SHIRAISHI
  • Publication number: 20120320270
    Abstract: A display device properly corrects chromaticity of display images with achieving high brightness. A liquid crystal display device 10 includes a liquid crystal panel 11 and a backlight unit 12. The liquid crystal display device 10 includes a pair of boards 11a, 11b and a liquid crystal layer 11c formed of liquid crystals that change their optical characteristics by implication of an electric field. The backlight unit 12 exits light toward the liquid crystal panel 11. One of the boards 11a, 11b of the liquid crystal panel 11 includes a color filter 19 including color portions R, G, B, Y each in red, green, blue, yellow. The backlight unit 12 includes LEDs 24 as a light source and each of the LEDs includes an LED chip 24a as a light emission source and a phosphor that is excited by light from the LED chip 24a and emits light. The phosphor includes at least a YAG-based phosphor.
    Type: Application
    Filed: January 24, 2011
    Publication date: December 20, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Yoshiki Takata
  • Publication number: 20120314450
    Abstract: To obtain a white reflective film that is hard to warp and can ameliorate unevenness in the luminance even when used in such a manner as to be superimposed on a chassis having convex and concave portions for placing circuits and the like or used with an LED, and can prevent uneven close contact with a light guide plate and damage of the light guide plate, the white reflective film for edge-lit backlight is made to meets the requirements (i) to (iii): (i) the stiffness is 2 to 10 mN·m; (ii) convex portions are formed on at least one surface (A) and the maximum height of the convex portion is 15 to 60 ?m; and (iii) the cushion rate at the side of a surface (B) opposite to the surface (A) is 12% or more.
    Type: Application
    Filed: February 18, 2011
    Publication date: December 13, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yoshihiko Sakaguchi, Yuji Kawata, Osamu Watanabe
  • Publication number: 20120314446
    Abstract: A backlight pad for a keypad assembly is provided, which can minimize power consumption of a battery through applying of a small number of light emitting elements and provide uniform light to all the button portions of the keypad.
    Type: Application
    Filed: August 2, 2011
    Publication date: December 13, 2012
    Inventor: Bae Kyung JEON
  • Publication number: 20120314447
    Abstract: A backlight module and a liquid crystal display device are provided. The backlight module at least comprises a light source assembly and a light guide plate. The light source assembly provides multiple groups of parallel incident beams having different intensity. A light incidence surface is used to receive the parallel incident beams and then refract them to be multiple groups of parallel refracted beams. The parallel refracted beams can directly arrive at a bottom surface, and be emitted out from a light-emitting surface after reflected and dispersed by the bottom surface. There forms an included angle between a normal of the light incidence surface and the parallel incident beams, and the included angle is an acute angle. The backlight module and the liquid crystal display device of the present invention can reduce the reflection times of light in the light guide plate for improving the light use efficiency.
    Type: Application
    Filed: July 20, 2011
    Publication date: December 13, 2012
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jianfa Huang
  • Publication number: 20120314141
    Abstract: An object of the present invention is to provide a lighting device in which uneven brightness is less likely to occur. The lighting unit 12 according to the present invention includes LEDs 17, a light guide member 19, and a positioning member 23. The light guide member 19 has an end portion facing the LEDs 17 as light sources. The positioning member 23 is capable of positioning the light guide member 9 with respect to a planar direction thereof. The end portion of the light guide member 19 includes a cutout 24 through which the positioning member 23 is inserted. The cutout 24 has a shape that narrows as a distance from the LED 17 increases. With this configuration, light from the LED 17 hardly enter the cutout 24 compared with a cutout having a constant width.
    Type: Application
    Filed: February 3, 2011
    Publication date: December 13, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Yasumori Kuromizu
  • Publication number: 20120314449
    Abstract: A lighting assembly includes a transparent light guide having first and second major surfaces and a light input edge, and is configured to propagate light by total internal reflection. A light source located adjacent the light input edge is selectively operable to edge light the light guide. First light extracting elements at the first major surface are configured to extract light through the first major surface with a first light ray angle distribution. Second light extracting elements at the first major surface are configured to extract light through the second major surface with a second light ray angle distribution. The light extracted through the second major surface reduces visibility at viewing angles within a defined viewing angle range through the lighting assembly from the second major surface of the light guide greater than the reduction in visibility through the lighting assembly from the first major surface of the light guide.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 13, 2012
    Applicant: RAMBUS INC.
    Inventors: Timothy A. McCollum, Jeffery R. Parker
  • Publication number: 20120314448
    Abstract: A vehicular lamp including a light guide in which light emitted from a light-emitting diode (30) is incident into a relatively short light guide (20), which extends in a horizontal direction intersecting the front-back direction of the lamp, from a left end surface (20a) and thereafter totally reflected by a plurality of reflective elements (20s) provided in the rear surface portion (20c) and then emitted out from the front surface portion (20d) toward the front of the lamp. A first incident portion (20a1) is provided in an intermediate region, in the front-back direction, of the left end surface (20a) of the light guide (20) so as to cause the light emitted from the light-emitting diode (30) to be incident into the light guide (20) while being refracted toward the rear of the lamp.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Applicant: Koito Manufacturing Co., Ltd.
    Inventor: Asami Nakada
  • Publication number: 20120307519
    Abstract: A planar light source apparatus includes a point light source and a light guide plate shaped like a flat plate with a rectangular shape in a plan view. The light guide plate includes an output surface confronting an opening portion, a pair of second side surfaces opposed to each other, and a hole opening in a non-output surface and formed near one of the first side surfaces at a position where the point light source is to be arranged. Each of the pair of second side surfaces is at least partially configured as a prism whose ridge line extends in a direction perpendicular to the output surface and whose cross-section, when sectioned in a direction parallel to the output surface, has a sawtooth-like shape in which concavity and convexity are repeated. A light of the point light source can be efficiently uniformized in the light guide plate, and thus unevenness of brightness can be prevented.
    Type: Application
    Filed: April 28, 2010
    Publication date: December 6, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Seiji Sakai
  • Publication number: 20120307518
    Abstract: A display apparatus and a backlight assembly are provided. The display apparatus includes a display panel; and a backlight unit disposed on a rear surface of the display panel and discharging light to the display panel, the backlight unit comprising white light emitting diodes (LEDs) and Quantum Dot (QD) LEDs.
    Type: Application
    Filed: March 26, 2012
    Publication date: December 6, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-min LEE, Kye-hoon LEE, Kun-ho CHO, Jeong-phil SEO, Yong-hun KWON, Gil-tae HUR, Suk-ju CHOI
  • Publication number: 20120306861
    Abstract: A light source device includes: a light guide plate having a first internal reflection face and a second internal reflection face opposed to each other; a first light source applying first illumination light into the light guide plate through a side face thereof; and a plurality of scattering regions provided, inside the light guide plate, between the first internal reflection face and the second internal reflection face, the scattering regions allowing the first illumination light to be scattered and to exit from the first internal reflection face to outside of the light guide plate.
    Type: Application
    Filed: May 16, 2012
    Publication date: December 6, 2012
    Applicant: Sony Corporation
    Inventor: Masaru Minami
  • Patent number: 8322903
    Abstract: A light source module includes a casing, at least one reflective layer, a light bar, and at least one light source. The casing has a first side wall and a second side wall, and the first side wall and the second side wall define an opening. The opening faces a light incident surface of a light guide plate, and the first side wall and the second side wall are respectively positioned on two opposite sides of the opening. The reflective layer is formed inside the casing and adjacent to one of the first side wall and the second side wall. The light bar is disposed inside the casing and forms an angle with the light incident surface of the light guide plate.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: December 4, 2012
    Assignee: Young Lighting Technology Inc.
    Inventors: Jui-Nien Jao, Chien-Hao Fu, Chao-Min Yang
  • Patent number: 8322874
    Abstract: Lightguides, devices incorporating lightguides, and processes for making lightguides are described. A lightguide includes light extractors arranged in a pattern on a surface of the lightguide. The pattern of light extractors is arranged to enhance uniformity of light output across a surface of the lightguide and to provide enhanced defect hiding. The efficiency of the light extractors is controlled by a shape factor. The areal density of the light extractors across the surface of the lightguide may be substantially constant or may decrease along the direction of propagation of light from the light source.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: December 4, 2012
    Assignee: 3M Innovative Properties Company
    Inventor: David A. Ender
  • Publication number: 20120300494
    Abstract: Light sources include a pair of first light sources located at both ends in an arrangement direction and a second light source located between the first light sources. Each of directions in which the first light sources face is set so as to cross a direction in which the second light source faces. Each of the first light sources has first light-emitting portions arranged along a circumferential edge and emitting lights of different colors. The second light source has second light-emitting portions arranged along the circumferential edge and emitting lights of different colors. Light emitted by one of the first light-emitting portions which is nearest to the second light-emitting portions is the same in color as light emitted by one of the second light-emitting portions which is nearest to the first light-emitting portions.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 29, 2012
    Inventors: Kazufumi WATABE, Masayuki Mifune, Takahiko Muneyoshi, Naohisa Andou, Mitsuhide Miyamoto
  • Publication number: 20120300138
    Abstract: It is an object of the present invention to provide a lighting device including a plurality of light guide bodies in which brightness difference between light guide bodies is reduced. A backlight unit 12 according to the present invention includes a plurality of LEDs 17 as light sources and a plurality of light guide bodies 31 each having a light entrance surface 31a and a light exit surface 31b. The light entrance surface faces the light source and through which light emitted from the light source enters the light guide body. The light in the light guide body exits through the light exit surface. The light guide bodies 31 are collectively covered with a fixing member 32, so that a positional relationship between the light guide bodies 31 is constant. Further, the fixing member 32 has a relative refractive index of one or less with respect to the light guide body 31.
    Type: Application
    Filed: December 13, 2010
    Publication date: November 29, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Yuya Takano
  • Publication number: 20120300493
    Abstract: A light source module including light sources and secondary optical lens is proposed. The secondary optical lens includes an incident curved surface, an emitting curved surface, and a bottom of prism. The incident curved surface has a concave area defined as a cavity where the light source is disposed. A light beam generated by the light source is emitted to the inside of the secondary optical lens through the incident curved surface. The light beam is emitted outwards through the emitting curved surface after being reflected by the prism microstructures on the bottom of prism. The light beam reflected by the emitting curved surface can be emitted to the inside of the secondary optical lens again by using the prism microstructures. Therefore, the light source module can reduce the scattering amount of the light beam, thereby improving the utilization of the light beam generated by the light source.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 29, 2012
    Applicant: Shenzhen China Star Optoelectronics Technology Co.,LTD.
    Inventors: Kuangyao Chang, Kuojun Fang, Qian Cao
  • Publication number: 20120300428
    Abstract: A backlight module is disclosed. The backlight module includes a light guide plate, a backlight source, an optical plate, and an optical coating layer. The light guide plate has a light emitting surface and a light incident end. The light incident end is located at an adjacent side of the light emitting surface. The backlight source is disposed corresponding to the light incident end and generates lights emitting to the light incident end. The optical plate is disposed above the light emitting surface. The optical plate includes an extension portion extending disposed above the backlight source. The optical coating layer is formed on a surface of the extension portion.
    Type: Application
    Filed: February 21, 2012
    Publication date: November 29, 2012
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Ching-Hung Cheng, Ta-Jen Huang
  • Publication number: 20120300491
    Abstract: High-brightness light emitting diode (LED) packages, systems and methods with improved resin filling and high adhesion are provided. In one aspect, a high brightness package for a light emitter (e.g., a LED or LED chip) can include a body and a cavity disposed in the body. The cavity can include at least one cavity wall extending toward an intersection area of the body where the cavity wall intersects a cavity floor. The package can further include at least one electrical element having first and second surfaces, each of the first and second surfaces proximate the intersection area. The first surface can be disposed on a first plane and the second surface can be at least partially disposed on a second plane that is different than the first plane. The body can at least substantially cover the second surface.
    Type: Application
    Filed: January 31, 2012
    Publication date: November 29, 2012
    Inventors: Christopher P. Hussell, Sung Chul Joo
  • Publication number: 20120300492
    Abstract: A backlight module and a display device comprising the same are disclosed. The backlight module comprises a light source and a backplate. The backplate comprises an aluminum extruded piece and a plastic baseplate. The plastic baseplate is fixedly connected to a side of the aluminum extruded piece, and the light source is disposed on a sidewall of the aluminum extruded piece that is located at a side away from the plastic baseplate. The backlight module and the display device of the present disclosure have the aluminum extruded piece formed as a part of the backplate of the backlight module and have the light source integrated onto the aluminum extruded piece directly. In this way, heat generated by the light source can be transmitted through the aluminum extruded piece to the atmosphere directly to reduce contact heat resistance, thus improving the heat dissipation efficiency.
    Type: Application
    Filed: July 18, 2011
    Publication date: November 29, 2012
    Applicant: Shenzhen China Star Optoelectronics Technology Co., LTD.
    Inventor: Yanxue Zhang
  • Publication number: 20120300490
    Abstract: A display apparatus includes a display panel which receives a light and displays an image, a bottom chassis which accommodates the display panel, and a top chassis which faces the bottom chassis with the display panel therebetween. The top chassis overlaps a portion of the display panel and includes a first thru-hole which extends through a thickness of a side portion thereof. The display apparatus includes a printed circuit board and a coupling member. The printed circuit board applies an electrical signal to the display panel, is under the side portion, and includes a second thru-hole which corresponds to the first thru-hole. The coupling member extends through the first thru-hole and the second thru-hole, and couples the top chassis and the printed circuit board to each other.
    Type: Application
    Filed: October 27, 2011
    Publication date: November 29, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwang-Wook Choi, YongWoo Lee, Joo Woan Cho, Seongsik Choi
  • Publication number: 20120294030
    Abstract: A vehicle lighting unit can be configured such that it is difficult or impossible for an observer to visually recognize a light source, a light guide and the like through an outer lens and to suppress brightness unevenness. The vehicle lighting unit can project light outwardly through an opening portion formed in a minor housing of a sideview mirror along a vehicle length direction and near an outer side of the sideview minor in a vehicle width direction. The vehicle lighting unit can include: a housing provided inside the minor housing, an outer lens inside the mirror housing so as to close the opening portion, a light source disposed in a lighting chamber at a position vertically shifted from the position of the opening portion, and a light guide disposed in the lighting chamber while shifted from the position of the opening portion toward the light source.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 22, 2012
    Inventors: Hidetaka OKADA, Hiroyuki Takahashi, Kazuya Makiuchi