Emission Face Patents (Class 362/617)
  • Patent number: 11966075
    Abstract: There is provided an optical member that can achieve a backlight unit excellent in brightness uniformity. The optical member includes: a light guide plate having an end surface that light from a light source enters, an emitting surface from which the entered light is emitted, and a light extraction pattern arranged on a surface opposite to the emitting surface; and a reflective plate bonded to the light guide plate via a double-sided pressure-sensitive adhesive film. An outer edge of the light guide plate is positioned outside an outer edge of the double-sided pressure-sensitive adhesive film, and the outer edge of the double-sided pressure-sensitive adhesive film is positioned outside an outer edge of the light extraction pattern.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: April 23, 2024
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takahiro Yoshikawa, Daisuke Hattori, Ryota Morishima, Atsushi Kishi
  • Patent number: 11934058
    Abstract: Disclosed are a display device, a multi-screen display device using the same, which include a minimized bezel area and a method for manufacturing the display device. The display device including a display substrate including a plurality of subpixels respectively provided in a plurality of pixel areas defined by a plurality of data lines and a plurality of gate lines, a line substrate bonded to the display substrate by using a substrate bonding member and including a plurality of data routing lines, and a side data connection member provided on one side of each of the display substrate and the line substrate to connect the plurality of data lines to the plurality of gate lines in a one-to-one relationship.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: WooNam Jeong, SeungChul Lee
  • Patent number: 11927795
    Abstract: A planar light source includes a light guide member including light-emitting units separated by a groove and one or more light sources disposed in one or more of the light-emitting units. The light-emitting units include outer portions and at least one inner portion located in a region surrounded by the outer portions in a plan view. In the plan view, at least one of the outer portions is adjacent to a smaller number of light-emitting units than a number of light-emitting units to which one of the at least one inner portion is adjacent. In a state in which the same power is supplied and one of the outer portions and one of the at least one inner portion are allowed to individually emit light, brightness of the one of the outer portions is higher than brightness of the one of the at least one inner portion.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: March 12, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Ryoma Okado, Satoshi Yoshinaga
  • Patent number: 11886091
    Abstract: A front light module including a light guide plate, a light source, an optical film, and a first optical clear adhesive is provided. The light guide plate has a top surface, a bottom surface opposite to the top surface, and a light input surface connecting the top surface with the bottom surface. The light source is disposed beside the light input surface. An optical surface of the optical film facing away from the light guide plate has a plurality of optical microstructures. Each of the optical microstructures is a recess, and has a light receiving surface more adjacent to the light input surface and a light back surface further away from the light input surface. The optical clear adhesive is disposed between the light guide plate and the optical film in a fully bonding manner. An electrophoretic display is also provided.
    Type: Grant
    Filed: September 5, 2022
    Date of Patent: January 30, 2024
    Assignee: E Ink Holdings Inc.
    Inventors: Sheng-Chieh Tai, Ching-Huan Liao
  • Patent number: 11822218
    Abstract: A projection system includes a light source, a reflective phase modulator, a display and a projection lens. The light source is configured to emit a first light. The reflective phase modulator is configured to modulate phase of the first light to form a second light. The display is configured to receive the second light. The display is located between the projection lens and the reflective phase modulator.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: November 21, 2023
    Assignee: Himax Display, Inc.
    Inventor: Kuan-Hsu Fan Chiang
  • Patent number: 11809049
    Abstract: According to one embodiment, a display device includes a first substrate including a pixel electrode, a second substrate including a common electrode, a liquid crystal layer located between the first substrate and the second substrate and containing polymer and liquid crystal molecules, and a light emitting element opposed to an end surface of the second substrate, the common electrode being separated from the pixel electrode by a first distance, at a first position, the common electrode being separated from the pixel electrode by a second distance, at a second position more separated from the light emitting element than the first position, the second distance being smaller than the first distance.
    Type: Grant
    Filed: February 7, 2023
    Date of Patent: November 7, 2023
    Assignee: Japan Display Inc.
    Inventors: Tenfu Nakamura, Kojiro Ikeda, Kentaro Okuyama
  • Patent number: 11740400
    Abstract: A light guide plate has a top side and a bottom side that are opposite to each other, and has a light-incident surface, a light-emitting surface, multiple light guide structures, and an inclined surface structure. The light-incident surface is located at an end of the light guide plate. The light-emitting surface is located on the top side of the light guide plate and is connected to the light-incident surface. The light guide structures are disposed on the light-emitting surface, and each one of the light guide structures has a light-facing surface and an opposite light-facing surface connected to a side of the light-facing surface away from the light-incident surface. The inclined surface structure is connected to the light-incident surface and the bottom side of the light guide plate. A front light module having the light guide plate and a display device having the front light module are also provided.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: August 29, 2023
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Kuo-Cheng Tung, Hao Chen, Chin-Ting Weng, Chia-Yin Chang
  • Patent number: 11693274
    Abstract: A backlight module includes a light guide plate, a light source, an optical film, and a prism sheet. The optical film includes a first substrate having opposite first and second surfaces and multiple optical microstructures disposed on the second surface and each having a first light receiving surface away from a light incident surface. The prism sheet is located on a side of the second surface of the first substrate. The prism sheet includes a second substrate having opposite third and fourth surfaces and multiple prism structures disposed on the fourth surface and each having a second light receiving surface away from the light incident surface. A first angle between the first light receiving surface and the second surface is different from a second angle between the second light receiving surface and the fourth surface. A display apparatus includes the backlight module and a display panel.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: July 4, 2023
    Assignee: Nano Precision Taiwan Limited
    Inventors: Kuan-Wen Liu, Hao-Jan Kuo, Ming-Yu Chou, Hsin Huang
  • Patent number: 11656699
    Abstract: The present invention provides a product with an operation display panel incorporated therein, which naturally harmonizes with the environment to not create visual noise for a user and allow the user to operate the operation display panel intuitively while feeling a natural material. A thin layer, made of a natural wood, natural fiber, natural leather, or natural stone, or a resin, synthetic fiber, synthetic leather or artificial stone created by imitating the appearance and touch of a natural material, is provided on the peripheral surface of a housing so that the thin layer covers at least the entire front surface of a display panel. A touch sensor incorporated comes in contact with the front surface of the panel. The thickness of the thin layer and the luminance of the panel are designed to allow the user to view the content displayed on the panel.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: May 23, 2023
    Assignee: MUI LAB, INC.
    Inventors: Kazunori Oki, Nobuyasu Hirobe, Fumiaki Shibayama, Shinji Horii, Takanori Yamamoto, Makoto Nomura
  • Patent number: 11635550
    Abstract: Provided is a lighting device capable of manipulating a wider range of parameters to reproduce various light sources. A light source unit 10 includes, for example, a liquid crystal panel and a backlight, and each pixel is a light source capable of adjusting innumerable hues and intensities capable of adjusting hue and intensity. A lenticular lens 20 includes an array of a plurality of lenticules, and is arranged such that a plurality of light sources capable of adjusting hue and intensity is associated with each lenticule. In addition, on the outer periphery of the cylindrical portion of each lenticule, a partition is formed to block emission light from the pixel below the adjacent lenticule, thereby preventing repetition.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: April 25, 2023
    Assignee: SONY GROUP CORPORATION
    Inventors: Yuichiro Takeuchi, Shunichi Suwa, Kunihiko Nagamine
  • Patent number: 11635563
    Abstract: A backlight device includes at least a plurality of LEDs arranged in a row, a light guide plate including at least a light entering end face having a plate shape, and a light refracting portion configured with a plurality of unit light refracting portions arranged side by side on the light entering end face along an alignment direction of the plurality of LEDs, wherein in the light refracting portion, an occupancy rate occupied by the unit light refracting portion in an end side portion of the light entering end face in the alignment direction is made lower than an occupancy rate occupied by the unit light refracting portion in a central side portion of the light entering end face in the alignment direction.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: April 25, 2023
    Assignee: Sharp Display Technology Corporation
    Inventors: Yuuichi Kanbayashi, Shugo Yagi, Satoshi Tsubooka
  • Patent number: 11586069
    Abstract: The present invention relates to a lighting apparatus using LEDs as light sources and a display using the lighting apparatus, particularly, the present invention provides a lighting apparatus including: a plurality of light sources located on a printed circuit board; and a reflecting unit provided on the printed circuit board; and a spaced area provided inside the reflective unit.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: February 21, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Kwang Ho Park, Chui Hong Kim, Moo Ryong Park, Byoung Eon Lee
  • Patent number: 11436951
    Abstract: A display device includes a display module; and a layer disposed on the display module and having a first area and a second area adjacent to the first area, the layer in the first area including a plurality of discontinuities spaced apart from each other. A sum of widths of the plurality of discontinuities is less than about 0.23 times of a width of the first area, each of the widths of the plurality of discontinuities is equal to or less than about 400 ?m, and the widths of the plurality of discontinuities and the width of the first area are parallel to a first direction.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: September 6, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jewon Yoo, Seungin Baek, Sang-Gu Lee, Hyunjin Son, Daewook Kim
  • Patent number: 11320574
    Abstract: A light guide plate, a backlight module and a display device are provided. A plurality of blind holes is arranged at a surface of the light guide plate; the blind hole is filled with a light-converting unit; the light-converting unit includes an accommodating cavity made of a light-transmitting material, and a light-converting material located in the accommodating cavity; and a gap is between an outer wall of the accommodating cavity and an inner wall of the blind hole.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: May 3, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yonglian Qi, Xue Dong, Huijuan Wang, Zezhou Yang, Hebin Zhao, Lianjie Qu, Shuai Liu
  • Patent number: 11309293
    Abstract: The present disclosure provides a backlight module, a manufacturing method thereof, and a display device. The backlight module including a substrate, a plurality of LED chips disposed on the substrate, a plurality of encapsulation units encapsulating the LED chips in a one-to-one correspondence; each of the encapsulation units includes at least two encapsulation layers, an innermost one of the encapsulation layers completely covers the LED chip, and a refractive index of an encapsulation layer far from the LED chip is less than a refractive index of an encapsulation layer near the LED chip.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: April 19, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yong Yang
  • Patent number: 11300726
    Abstract: A display module includes a panel, a light guiding component, and an optical adhesive layer. The light guiding component includes a light guiding plate having a side facing the panel, and light guiding dots, equally spaced on the side of the light guiding plate. The optical adhesive layer positioned on the light guiding plate is transparent and has a side pasted on and connected to the panel and the side of the optical adhesive layer is comparatively far away from the light guiding component. This could prevent the optical adhesive from covering the light guiding layer of the light guiding component or prevent the refractive index of the flowing air layer from affecting the light transmission efficiency of the light guiding layer. Thus, the light transmission efficiency of the light guiding plate is raised and the display performance and the optical effect of the display module are raised.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: April 12, 2022
    Assignee: JRD Communication (Shenzhen) LTD.
    Inventor: Yang Yu
  • Patent number: 11239584
    Abstract: A display device includes a display panel including a plurality of panel pads, a connection board including a plurality of connection lines, and a circuit board including a plurality of board pads. The plurality of connection lines are spaced apart from each other. Each of a connection line among the plurality of connection lines includes: a first end portion at which the connection line is connected to the display panel, the first end portion being in direct contact with a panel pad, and a second end portion opposite to the first end portion and at which the connection line is connected to the circuit board, the second end portion being in contact with a board pad.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: February 1, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Myonghoon Roh
  • Patent number: 11143364
    Abstract: The disclosure relates in general to illuminated panels resembling windows, and more particularly, to a system containing a light source, a diffuser and a panel combined in such a fashion as to resemble a window, skylight or curtain wall.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: October 12, 2021
    Assignee: LuxTech, LLC
    Inventors: Sean R. Darras, Alexander Harris Nicolaides
  • Patent number: 11121296
    Abstract: A first transparent sealing member is used in a package accommodating at least one optical element, and is attached to a mounting substrate having a mounting surface for the optical element. In the first transparent sealing member, at least one corner part among a plurality of corner parts configured by a surface facing the mounting substrate and a surface along the mounting surface of the mounting substrate has a curved shape, and punctiform minute recessed parts are formed on the surface of the curved shape. The average presence frequency of the minute recessed parts is 100,000 to 3,000,000 inclusive per 1 mm2.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: September 14, 2021
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshio Kikuchi, Hiroyuki Shibata
  • Patent number: 11035994
    Abstract: A light-emitting module includes: a light guide plate having a first surface on which a plurality of first recesses arranged in rows and columns and a grid-shaped groove portion surrounding each of the plurality of first recesses are provided, and a second surface located on the opposite side from the first surface; a plurality of light-emitting elements each disposed inside a corresponding one of the plurality of first recesses; a first light transmission member disposed inside the groove portion of the light guide plate, and having a refractive index lower than a refractive index of the light guide plate; and a reflective resin layer covering the first surface of the light guide plate and the first light transmission member.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: June 15, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Yusaku Achi, Toshiaki Moriwaki, Ryohei Yamashita
  • Patent number: 10928053
    Abstract: The invention provides a lighting device (100) comprising a plurality of light sources (10), a light guide plate (20), a rim (30), and an IR sensor (40), wherein: (i) the light sources (10) are configured to provide light source light (11), and wherein the light sources (10) are configured in an edge-lighting configuration with the light guide plate (20); (ii) the light guide plate (20) comprises a circumferential edge (22) of which at least part is configured as light incoupling face for the light source light (11), and a first face (21) of which at least part is configured as light outcoupling face; (iii) the rim (30) comprises the plurality of light sources (10) and the IR sensor (40); and (iv) the IR sensor (40) is configured to sense IR radiation (41) via the light guide plate (20).
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: February 23, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Nicolaas Antonie Van Rijswijk, Anna Wilhelmina Maria Dergem-De Best, Rene Theodorus Wegh
  • Patent number: 10866456
    Abstract: A light emitting module with a reduced thickness is provided. A method of manufacturing a light emitting module sequentially includes: providing a light guiding plate having a first main surface being a light emitting surface, and a second main surface on the side opposite to the first main surface; providing a plurality of light emitting elements on the light guiding plate; and forming a wiring electrically connecting the plurality of light emitting elements. A light emitting module includes: a light guiding plate having a first main surface and a second main surface; a plurality of wavelength conversion parts disposed at the second main surface of the light guiding plate so as to be spaced apart from each other; a plurality of light emitting elements respectively bonded to the plurality of wavelength conversion parts; and a wiring connected to the plurality of light emitting elements.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: December 15, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Tadao Hayashi
  • Patent number: 10865948
    Abstract: A transparent sealing member is provided with minute recesses at least in the surface of the member from which light from an optical element is emitted. The average width of the minute recesses is 0.1 ?m to 2.0 ?m, the average depth of the minute recesses is 5 nm to 50 nm, and the average frequency of occurrence of the minute recesses is 100000 to 3000000 recesses per 1 mm2.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: December 15, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshio Kikuchi, Hiroyuki Shibata, Tatsuya Hishiki
  • Patent number: 10851979
    Abstract: A backlight lamp bar, a backlight module and a display device are provided in embodiments of the disclosure, all being relating to a technical field of display technology, the backlight lamp bar as disclosed including: a flexible circuit board; and a backlight source and a button light source both being provided on the flexible circuit board; the backlight source and the button light source being located on two opposite faces of the flexible circuit board perpendicular to a thickness direction thereof, and power supply terminals of the backlight source and the button light source are electrically connected with circuits on the flexible circuit board, respectively.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: December 1, 2020
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yufei Liu, Taesung Kang, Ming Zhai, Xiaoliang Fu, Ruifeng Yang, Litao Fan, Qiuxue Han
  • Patent number: 10580932
    Abstract: A method for manufacturing a light-emitting device includes: providing a light-transmissive member comprising: a base portion, and a projecting portion on a first surface side of the base portion; providing a light-emitting element that has a main emitting surface and an electrode formation surface opposite to the main emitting surface; disposing the light-emitting element on the projecting portion of the light-transmissive member such that the main emitting surface of the light-emitting element faces an upper surface of the projecting portion of the light-transmissive member; and forming a light-reflective member that covers at least one of (i) lateral surfaces of the light-emitting element, and/or (ii) lateral surfaces of the projecting portion of the light-transmissive member.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: March 3, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Tadao Hayashi
  • Patent number: 10451912
    Abstract: A display device includes a display panel and a control portion. The control portion has a function of receiving image data, and a function of generating and supplying first data and second data on the basis of the image data. The display panel includes a pixel and an optical element. The pixel includes a first display element and a second display element. The second display element includes a region adjacent to the first display element. The optical element includes a first region overlapping with the second display element. The first region has a function of directing light which enters a region overlapping with the second display element to the first display element. The first display element is a reflective display element. The second display element is a light-emitting element.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 22, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hisao Ikeda, Fumito Isaka
  • Patent number: 10393954
    Abstract: A light guiding structure, a backlight source and a display device are provided. The light guiding structure includes a light guiding plate, wherein at least one side end surface of the light guiding plate is provided with a fixing mechanism configured to fix a light bar. In the above-described light guiding structure, since the fixing mechanism provided on the side end surface of the light guiding plate is fixed to the light bar, the light guiding plate is accurately aligned with the light bar. The operation difficulty of fixing the light guiding plate to the light bar by the fixing mechanism is reduced, thus, it is easy to achieve the accurate alignment between the light guiding plate and the light bar.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: August 27, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE DISPLAY LIGHTING CO., LTD.
    Inventor: Xiang Liu
  • Patent number: 10295724
    Abstract: This application describes a back-lit transmissive display including a transmissive display and a variable index light extraction layer optically coupled to a lightguide. The variable index light extraction layer has first regions of nanovoided polymeric material and second regions of the nanovoided polymeric material and an additional material. The first and second regions are disposed such that for light being transported at a supercritical angle in the lightguide, the variable index light extraction layer selectively extracts the light in a predetermined way based on the geometric arrangement of the first and second regions. The transmissive display may be a transmissive display panel or a polymeric film such as a graphic.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: May 21, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: David Scott Thompson, Kevin R. Schaffer, Zhaohui Yang, Encai Hao, Audrey A. Sherman, Michael A. Meis, John A. Wheatley, Matthew S. Stay, Robert F. Kamrath, Mikhail L. Pekurovsky, Steven D. Solomonson
  • Patent number: 10254473
    Abstract: A light-emitting panel of the present invention has a LED, a surface light-emitting member, a light source holder, and a holder supporting portion. The surface light-emitting member has a rectangular plate shape and at least one surface of front and back surfaces is surface-emitted by entering light from the light source into an incident edge. The light source holder holds the LED such that a light exit of the light source is arranged toward the incident edge. The holder supporting portion is fixed to the surface light-emitting member and hold detachably the light source holder. The light-emitting panel of the present invention can reduce effects of the light source due to thermal expansion of the surface light-emitting member, and easily replace the light source.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: April 9, 2019
    Assignee: MEITAKU INDUSTRY CO., LTD.
    Inventor: Hirokazu Matsui
  • Patent number: 9791124
    Abstract: A vehicle lighting assembly includes a housing, a circuit board, and a lens. The circuit board is disposed within the housing and includes a turn signal light source configured to emit yellow-green colored light at a peak intensity in a range of about 500 nm to about 570 nm. The lens is coupled to the housing. The lens is a single-color optical filter configured to shift the yellow-green colored light emitted from the turn signal light source to a range of about 588 nm to about 592 nm.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: October 17, 2017
    Assignee: MLS Automotive, Inc.
    Inventors: Adam J. Vincens, Favian de Lima
  • Patent number: 9645296
    Abstract: The present invention discloses a light guide plate, comprises a light inducing portion closed to the light incident side and a main body portion away from the light incident side, the top surface on the main body portion is the light exiting surface, the light inducing portion is thicker than the main body portion, and the first angle between the light exiting surface and the connecting surface of the light inducing portion and the main body portion is an obtuse angle. In the light guide plate of the present invention, the light guide portion close to the light incident side is thicker than the main body portion, the light source utilization is increased, the light guide effect is enhanced, the light guide efficiency and the optical taste of the backlight module which contains the ultra-thin light guide plate are all improved.
    Type: Grant
    Filed: January 4, 2015
    Date of Patent: May 9, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Gege Zhou
  • Patent number: 9618677
    Abstract: A light guide assembly, a backlight module and a liquid crystal display (LCD) are provided. The backlight module includes a back plate, light guide plate, an adhesive member and a light source. The light guide plate is disposed on the back plate and includes a first optical surface, a second optical surface and a light-incident surface. The first optical surface is opposite to the second optical surface. The light-incident surface connects the first optical surface and the second optical surface. The first optical surface or the second optical surface of the light guide plate is set with a recess. The adhesive member is disposed in the recess to adhere the light guide plate to the back plate. The light source is disposed on the back plate and emits light toward the light guide plate.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: April 11, 2017
    Assignee: Radiant Opto-Electronics Corporation
    Inventor: Jui-Lin Chen
  • Patent number: 9482424
    Abstract: According to an aspect of the present invention, a lighting device (2) is provided. The lighting device (2) comprises a wavelength converting layer (21) having a curved shape and a light source (22) arranged to emit light towards the wavelength converting layer (21). The wavelength converting layer (21) intersects a plane extending through the light source (22) and being parallel with the optical axis of the light source (22), at a curve given, in a polar coordinate system centered at the light source (22), by the equation: R(?)=k·I(?)1/2±D, wherein k is a constant, 0 is an angle with respect to said optical axis, /(?) is a function defining a luminous intensity profile of the light source and D is a deviation ranging from zero to 20% of the maximum value of said curve, Rmax. The present invention is advantageous in that the lighting device (2) has a more uniform color distribution of emitted light across the wavelength converting layer (21) and the risk of color gradients and artifacts is reduced.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: November 1, 2016
    Assignee: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Erik Paul Boonekamp, Shufen Tsoi, Andreas Aloysius Henricus Duijmelink, Gerardus Wilhelmus Gerbe Van Dreumel
  • Patent number: 9354384
    Abstract: A liquid crystal display device 10 includes an LED 17, a liquid crystal panel 11, a light guide plate 16 including a light exit surface 16a, an opposing surface 16c, and a light entrance surface 16b, a chassis 14 having a bottom plate 14a, a frame 13, an LED board 18, a heat dissipation member 19 having heat dissipation properties, and a fixing screw 40. The heat dissipation member 19 includes a contact portion 19c being in contact with an end portion of the opposing surface 16c on a light entrance surface 16b side, a bottom portion 19b arranged on and along the bottom plate 14a and a stand-up portion 19a projecting from the bottom portion 19b toward the liquid crystal panel 11. The LED board 18 is mounted on a surface of the stand-up portion 19a. The fixing screw 40 is passed through the contact portion 19c and a tip portion thereof is fixed in the opposing surface 16c such that the stand-up portion 19a and the LED board 18 are fixed relative to the light guide plate 16.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: May 31, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Nobuhiro Kasai
  • Patent number: 9322972
    Abstract: A display device including a light source; a wavelength conversion member to convert a wavelength of light generated from the light source; a light guide member to guide the light converted by the wavelength conversion member; and an adhering member. In addition, the wavelength conversion member includes a first surface facing the light source; a second surface facing the light guide member; a top surface extending from the first surface to the second surface; and a bottom surface facing the top surface. Furthermore, the adhering member is disposed on the top surface and the bottom surface. Also, the wavelength conversion member includes a tube, the tube receives a sealing member, an air layer and a matrix therein, and the air layer is formed between the sealing member and the matrix.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: April 26, 2016
    Assignee: LG Innotek Co., Ltd.
    Inventor: Jin Ho Lee
  • Patent number: 9201189
    Abstract: Disclosed is a display device. The display device includes a light source; a wavelength conversion member to convert a wavelength of light generated from the light source; and a light guide member to guide the light converted by the wavelength conversion member, wherein the wavelength conversion member is disposed in an insertion hole formed in the light guide member.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: December 1, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Jin Ho Lee
  • Patent number: 9158059
    Abstract: The present invention provides a backlight module and a liquid crystal display module using the backlight module. The backlight module includes: a backplane (2), a backlight source (4) mounted in the backplane (2), and a light guide plate (6) mounted in the backplane (2). The backplane (2) includes a bottom board (22) and a plurality of side boards (24) perpendicularly connected to the bottom board (22). The backlight source (4) includes a circuit board (42) and a plurality of LED lights (44) mounted to and electrically connected with the circuit board (42). The circuit board (42) is mounted to the bottom board (22). The LED lights (44) are arranged at one side of the light guide plate (6). The circuit board (42) includes a first slope surface (422) facing the bottom board (22). A heat dissipation board (8) is arranged between the circuit board (42) and the bottom board (22). The heat dissipation board (8) includes a second slope surface (82) mateable with the first slope surface (422).
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: October 13, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Gang Yu, Shihhsiang Chen
  • Patent number: 9109782
    Abstract: An LED light emitting apparatus includes an LED light source, a light guiding device and an emitting window. The emitting window is covered with a phosphor layer. Light emitted directly from the LED light source is first transmitted to the light guiding device and then guided by the light guiding device towards the emitting window to evenly excite the phosphor layer.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: August 18, 2015
    Assignee: ADVANCED OPTOELECTRONIC TECHNOLOGY, INC.
    Inventors: Chung-Min Chang, Chien-Lin Chang-Chien, Hsuen-Feng Hu
  • Patent number: 9108369
    Abstract: In one or more embodiments, wedge light guides are constructed that are monolithic in nature and include integrally-formed optical concentrators. The wedge light guide and its associated optical concentrators are defined by a mold. In at least some embodiments, structure within the mold that defines the optical concentrators can be used as injection ports through which formation material can be injected to form the monolithic wedge light guide.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: August 18, 2015
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Kurt Allen Jenkins
  • Patent number: 9097825
    Abstract: A front light component for electronic devices that include displays for rendering content using a light guide to control illumination for a front light display. A high reflectivity “white” tape is used under and adjacent to the light guide to improve overall uniformity of the light beams. The high reflectivity tape may also be selected to be of a controlled white hue to compensate for variances in color of Light Emitting Diodes (LEDs) where the LED color is slightly off from ideal white. In this way the complementary color of the high reflectivity tape with the color of the LED will cause the output spectrum to be uniform and white. This disclosure also describes techniques for assembling electronic devices in a component stack to provide enhanced display uniformity and improved reading experience.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: August 4, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Siddharth Gupta, Gregory Turner Witmer
  • Patent number: 9086209
    Abstract: Provided is a lighting device, comprising: a light source module comprising: at least one light source disposed on a printed circuit board; and a resin layer disposed on the printed circuit board so that the light source is embedded; a light reflection member formed on at least any one of one side surface and another side surface of the resin layer; and a diffusion plate having an upper surface formed on the light source module, and a side wall which is integrally formed with the upper surface and formed to extend in a lower side direction and which is adhered onto the light reflection member, wherein a first separated space is formed between the light source module and the upper surface of the diffusion plate, whereby flexibility of the product itself can be secured, and durability and reliability of the product can be also improved.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: July 21, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Kwang Ho Park, Chul Hong Kim, Hyun Duck Yang, Moo Ryong Park, Jun Chul Hyun
  • Patent number: 9046629
    Abstract: A frame for a backlight module includes a first strip, a second strip, a third strip, and a fourth strip connected end to end in sequence to cooperatively enclose an interior of the frame. The first strip, the second strip, the third strip, and the fourth strip each include an inner surface facing the interior of the frame. A number of microdots are formed on the inner surface.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: June 2, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Yun-Yu Chou
  • Publication number: 20150138828
    Abstract: Embodiments of the invention provide a backlight source and a display device. An aperture is formed in a frame of the backlight source. A light guide plate in the backlight source is provided with a flank. The flank extends outwards through the aperture. The display device includes the backlight source, and a light transmitting region for transmitting light from the flank of the light guide plate is arranged on the side wall of the display device. The light emission of the side wall of the display device is realized, the application range of the backlight source is widened and the light emitting diversity is increased on the condition of not adding other light sources.
    Type: Application
    Filed: May 7, 2014
    Publication date: May 21, 2015
    Applicants: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Yaozuo KE
  • Publication number: 20150138827
    Abstract: A method of protecting an LED chip from damage by ESD and EMI when the LED chip is housed in a light-emitting diode(s) housing package (LED package) and the LED package is mounted on a printed circuit board is provided. The method comprises a step of not including an ESD and EMI suppressing Zener diode within the combination of the printed circuit board and the LED package and of providing within the combination of the printed circuit board and the LED package a first conductive member and a spaced apart second conductive member which are electrically connected to the LED chip and which have defined between them at least one insulative ESD and/or EMI suppressing region which breaks down in its insulative properties when subjected to voltages of absolute magnitudes greater than a predetermined threshold voltage.
    Type: Application
    Filed: April 25, 2014
    Publication date: May 21, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Si Joon SONG, Hyuk Hwan KIM, Seok Hyun NAM, Byoung Dae YE, Young Keun LEE
  • Patent number: 9033566
    Abstract: A light guiding device includes a light input surface, a light output surface extending from a first edge of the light input surface, a connecting surface extending from a second edge of the light input surface, and a reflecting surface interconnecting the output surface and the connecting surface. Relationships of ?<?, ?<?T and L?(AD)/tan ? are satisfied, where ?T is a critical angle for total internal reflection, ? is an angle between extensions of the connecting surface and the light output surface, ? is an angle between the reflecting and light output surfaces, (L) is a distance between the second edge and the end edge, and (AD) is a distance between a location of incidence of a light beam on the light input surface and one of the first or second edge.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: May 19, 2015
    Assignee: RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Wei-Hsuan Chen, Yung-Hui Tai, Chun-Yi Wu
  • Patent number: 9028128
    Abstract: The present invention provides a side-edge backlight module, which includes a backplane, a light guide plate arranged inside the backplane, a backlight source arranged inside the backplane, and a photo coupler arranged between the light guide plate and the backlight source, whereby light emitting from the backlight source is subjected to light mixing by the photo coupler and then enters the light guide plate so as to improve homogeneity of light illumination of the light guide plate at a location close to a backlight source. The side-edge backlight module arranges a photo coupler between a light incidence surface of a light guide plate and LED lights of a backlight source in order to make lights emitting from the backlight source incident to the light guide plate in a uniform manner thereby providing the light guide plate with homogeneous light illumination.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 12, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Jianfa Huang
  • Publication number: 20150109822
    Abstract: The disclosure generally relates to illumination converters that are capable of converting light from one geometrical format to another. In particular, the described illumination converters are capable of converting a circular source such as an LED to a linear source useful in an edgelit waveguide, which can be used in a backlight for a display. The converter consists of a waveguide plate (210) with two edges (220, 218) oriented towards each other at 45° such that a the waveguide plate consists of a rectangular part (204) attached to a triangular part (202). The triangular part is rolled into a coil around a central axis (250) and one side of the coil is used for coupling in of the light from a source.
    Type: Application
    Filed: May 9, 2013
    Publication date: April 23, 2015
    Inventor: Andrew J. Ouderkirk
  • Patent number: 9004734
    Abstract: A light guide plate includes a number of optical fibers positioned side by side and transparent curable glue adhering the optical fibers together. The optical fibers and the curable glue cooperatively form a light incident surface and a light output surface connected to the light incident surface. The light output surface defines light output holes.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: April 14, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chih-Chen Lai
  • Patent number: 8998479
    Abstract: A surface light guide has a radiation exit area extending along a main extension plane of the surface light guide and is provided for laterally coupling radiation. The surface light guide includes scattering locations for scattering the coupled radiation. The surface light guide includes a first boundary surface and a second boundary surface which delimit the light conductance of the coupled-in radiation in the vertical direction. A first layer and a second layer are formed on each other in the vertical direction between the first boundary surface and the second boundary surface. Further disclosed are a planar emitter including at least one surface light guide.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: April 7, 2015
    Assignee: OSRAM Opto Semiconductor GmbH
    Inventors: Peter Brick, Stephan Kaiser, Gerhard Kuhn, Ales Markytan, Julius Muschaweck, Christian Neugirg
  • Publication number: 20150092441
    Abstract: An exit surface of a light guide plate includes a first position from which first emitted light is emitted within an angular range that causes the first emitted light to be applied to one eye and the vicinity thereof and a second position from which second emitted light is emitted within an angular range that causes the second emitted light to be applied to the other eye and the vicinity thereof. A straight line that passes through the first position and the center of the one eye and a straight line that passes through the second position and the center of the other eye intersect with each other.
    Type: Application
    Filed: August 27, 2014
    Publication date: April 2, 2015
    Inventors: Yoshihiko Takagi, Masayuki Shinohara, Yoshimasa Osumi, Norikazu Kitamura, Junya Fujita