Light Guide Patents (Class 362/615)
  • Patent number: 10871605
    Abstract: A light guide plate, a manufacturing method thereof, and a display device are provided. The light guide plate includes a glass substrate, an adhesive layer arranged at a surface of the glass substrate, a reflector arranged at a surface of the adhesive layer away from the glass substrate, and a total reflection structure distributed in the adhesive layer.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: December 22, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Yang Chu, Xian Yang, Hongyu Zhao, Wenjia Sun, Haijun Shi, Zhanchang Bu
  • Patent number: 10760799
    Abstract: An air-conditioning apparatus that conditions introduced air includes an ultraviolet sterilizer that emits ultraviolet ray to the air. The ultraviolet sterilizer includes a sterilizing light screen forming unit that forms a screen-shaped sterilizing light screen based on the emitted ultraviolet ray.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: September 1, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akane Nomura, Akira Morikawa, Isamu Hirashiki, Junichiro Horiuchi
  • Patent number: 10746367
    Abstract: Vehicle light comprising a container body, a lenticular body, a light guide, including a body having a prevailing longitudinal extension (L) that defines the propagation direction of the light beam inside the body by total internal reflection. The body has a first breakline that extends from the first to the second side wall. The first breakline includes a plurality of first holes that produce, through successive refractions, a scattering the light rays (Ri) towards the light outlet wall so as to emit a light beam with opalescent effect. The first holes are adjacent to each other without interruption, and the first holes of the first breakline are pass-through with respect to a thickness of the body of the light guide, penetrating from a first face to a second face of the body for a depth equal to the thickness.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 18, 2020
    Assignee: MARELLI AUTOMOTIVE LIGHTING ITALY S.P.A.
    Inventors: Sara Paroni, Marco Svettini
  • Patent number: 10738947
    Abstract: A bulb-type light source apparatus includes a light source and a light guide member. The light source is provided annularly. The light guide member includes an outer surface, a light-incident end surface opposing the light source, and an optical pattern portion configured to emit, from the outer surface, light that enters from the light-incident end surface.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: August 11, 2020
    Assignee: Sony Corporation
    Inventors: Naoki Yotsumoto, Masashi Torimoto, Masaki Ohno, Takashi Sato
  • Patent number: 10712501
    Abstract: Grating-based backlighting includes a light guide and a plurality of reflective grating islands spaced apart from one another and optically coupled to the light guide. The light guide is to guide a light beam at a non-zero propagation angle and a reflective grating island includes a reflection mode diffraction grating that is configured to diffractively couple out a portion of the guided light beam as a coupled-out light beam at a predetermined principal angular direction.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: July 14, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Patent number: 10690835
    Abstract: An optical member and a display device including the same. The optical member includes a light guide plate including a surface disposed on a plane defined by a first direction and a second direction crossing the first direction, a low refractive index pattern disposed on the surface of the light guide plate and including an opening for exposing the surface of the light guide plate, a wavelength conversion layer disposed on the low refractive index pattern, and a passivation layer disposed on the wavelength conversion layer and covering a side surface of the wavelength conversion layer and a side surface of the low refractive index pattern at least one side portion. The low refractive index pattern has a lower index of refraction than the light guide plate, and a ratio of an area occupied by the low refractive index pattern to an area of the surface of the light guide plate decreases in the first direction.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 23, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Yong Hwang, Young Min Park, Ju Young Yoon, Sung Kyu Shim, Sang Won Lee
  • Patent number: 10593492
    Abstract: The present disclosure discloses an illuminating keyboard including a keyboard module and a light emitting module. The keyboard module has an opaque region. The light emitting module includes a light guiding plate, a first light emitting component and a second light emitting component. The light guiding plate includes an accommodating groove corresponding to the opaque region. The accommodating groove has a first sidewall, a second sidewall, a first light divergence segment and a second light divergence segment. The first light divergence segment and the second light divergence segment are disposed on the first sidewall and the second sidewall, respectively. The first light emitting component and the second light emitting component are located in the accommodating groove and are disposed toward the first sidewall and the second sidewall, respectively. The light beams are injected into the light guiding plate via the first and the second light divergence segment.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: March 17, 2020
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Hsuan-Wei Ho, Jian-Hua Huang
  • Patent number: 10585230
    Abstract: Examples are disclosed that relate to backlit electronic displays that may help to avoid apparent non-uniform image brightness across a displayed image. One example provides an electronic display comprising a light guide, an image-forming layer, and a light-steering layer. The light guide is configured to release light over a display area. The image-forming layer is configured to form a display image by modulating the light released by the light guide. The light-steering layer is configured to steer together the light released from a peripheral region of the light guide and the light released from a central region of the light guide.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: March 10, 2020
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventor: Timothy A. Large
  • Patent number: 10520155
    Abstract: A light guide for a vehicle lamp includes a rod-shaped portion and a plate-shaped portion. The rod-shaped portion includes a rod-shaped light guide portion and a connecting projection portion projecting from a peripheral surface of the rod-shaped light guide portion and extending along the rod-shaped light guide portion. The plate-shaped portion includes two principal surfaces facing opposite to each other and a plate-shaped portion side surface connecting the two principal surfaces. The light guide is a multi-color molded product in which the rod-shaped portion is formed of a first resin material and the plate-shaped portion is formed of a second resin material containing a light diffusing agent. The rod-shaped light guide portion is connected to the side surface of the plate-shaped portion by the connecting projection portion.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: December 31, 2019
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Eiji Matsubara, Mamoru Kosuge, Akinori Yamamoto, Asami Sakashita
  • Patent number: 10459150
    Abstract: The present disclosure relates to a light guide plate, comprising a light guide plate body. In such a light guide plate, the light guide plate body comprises: a first surface serving as a light exit surface, a second surface opposite to the first surface, as well as a first side surface adjacent to the first surface and serving as a light incident surface. Furthermore, the first surface further comprises a light source bright region and a light source dark region, wherein the light source dark region is located on a side of the light source bright region remote from the first side surface. Besides, an optical structure for changing an angle of light emitted out from the first surface is further provided in the light source dark region. The present disclosure further relates to a backlight module and a display device comprising such a light guide plate.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 29, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BOE OPTICAL SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Xianglian Liu, Jialuo Chen
  • Patent number: 10371881
    Abstract: An optical member including a light guide plate including a surface disposed on a plane defined by a first direction and a second direction crossing the first direction, a low refractive index pattern disposed on the surface of the light guide plate and including an opening for exposing the surface of the light guide plate, a wavelength conversion layer disposed on the low refractive index pattern, and a passivation layer disposed on the wavelength conversion layer and covering a side surface of the wavelength conversion layer and a side surface of the low refractive index pattern at least one side portion. The low refractive index pattern has a lower index of refraction than the light guide plate, and a ratio of an area occupied by the low refractive index pattern to an area of the surface of the light guide plate decreases in the first direction.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 6, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Yong Hwang, Young Min Park, Ju Young Yoon, Sung Kyu Shim, Sang Won Lee
  • Patent number: 10372253
    Abstract: Discussed is a touch display device able to sense a touch position of a user touch and an amount of user touching force. A case disposed below the backlight unit is used as a touching force sensing electrode, enabling a touch display device to sense touch force using the case. A gap is formed by an open area in the bottom cover of the backlight unit, enabling the user touching force to be sensed without an increase in the thickness of the touch display device.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: August 6, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Mira Kim
  • Patent number: 10366273
    Abstract: A device for contact-based capture of human autopodial prints using disturbed total internal reflection, comprising a protective body with a contact surface, a sensor layer comprising light-sensor elements in an array for detecting light of a predefined wavelength range, and a light guide. Passband areas transparent for light of the predefined range are between the sensor elements. The light guide is transparent to light in the range and includes parallel lower and upper faces. The faces define a coupling-in surface for light emitted from a light source in a limited angular range around a preferred direction. Due to the directed angle of incidence, light entering the light guide is totally internally reflected at the faces. A mirror layer between the sensors and the guide reflects some light back into the light guide and transmits other light. Light exiting the guide is homogenized dependent upon a distance to the light source.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: July 30, 2019
    Assignee: JENETRIC GmbH
    Inventors: Joerg Reinhold, Dirk Morgeneier, Daniel Krenzer, Juergen Hillmann, Philipp Riehl, Undine Richter
  • Patent number: 10353499
    Abstract: A topside control panel for a bathing unit system is provided. The topside control panel comprises a housing including a top surface and a bottom surface opposed to the top surface and a display touch or presence-sensitive assembly positioned upon the top surface of the housing. The topside control panel also includes a circuit board assembly positioned upon the bottom surface the housing. In some embodiments, the bottom surface may be circumscribed by a bottom peripheral wall, which with the bottom surface defines a recess in which is positioned the circuit board assembly. A back panel may be secured to the housing so as to enclose the second recess and form an enclosed space. The back panel may include a ventilation member configured for allowing air communication between the enclosed space and a space external to the topside control panel.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: July 16, 2019
    Assignee: GECKO ALLIANCE GROUP INC.
    Inventors: Benoit Laflamme, Martin Caouette
  • Patent number: 10310329
    Abstract: The aspects disclosed herein relate to a display unit and a method for producing a display unit, is to provide a display unit which is easy to produce and is not susceptible to compressive and tensile stresses acting on the protective housing. This object is achieved in that the TFT module is disposed within a first housing half and the backlighting unit is disposed within a second housing half, and in that the first housing half is connected to the second housing half by means of a plurality of mounting elements, the mounting elements having predetermined breaking points.
    Type: Grant
    Filed: October 9, 2016
    Date of Patent: June 4, 2019
    Assignee: Visteon Global Technologies, INC.
    Inventor: Marcus Koch
  • Patent number: 10262599
    Abstract: In some examples, a display includes a plurality of display backlight groups, and one or more controller to determine one or more one-dimensional backlight group brightness level adjustments, to determine one or more two-dimensional backlight group brightness level adjustments, and to adjust a brightness of one or more of the backlight groups in response to content of a display image.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: April 16, 2019
    Assignee: Intel Corporation
    Inventors: John Lang, Yunhui Chu, Yanli Zhang, Zhiming J. Zhuang
  • Patent number: 10264248
    Abstract: A display apparatus configured for displaying different images at the same time, a vehicle having the same, and a method for controlling the same, may include a backlight device; and a display panel separate from the backlight device and configured to output an image using light of the backlight device, and the backlight device includes a first light source device configured to emit light; a second light source device separate from the first light source device, and a light guide plate disposed between the first light source device and the second light source device, and provided with a light guide portion configured to guide light in a first optical path when the light of the first light source device is incident and configured to guide light in a second optical path when the light of the second light source device is incident.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: April 16, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Sung Woo Lee
  • Patent number: 10197719
    Abstract: A display device includes a display panel curved with respect to a plane defined by a first direction and a second direction crossing the first direction and about a first reference axis substantially parallel to the first direction, a light guide plate disposed under the display panel and including a first surface facing the display panel and a second surface facing the display panel such that the first surface is disposed between the second surface and the display panel, a light source which provides a light to the light guide plate, and a bottom chassis which accommodates the light guide plate and the light source. The first surface is curved with respect to the plane about a second reference axis substantially parallel to the first direction, and the second surface is substantially parallel to the plane.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: February 5, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Euijeong Kang, Sehee Jeon, Junghoon Shin, Hayoung Lee
  • Patent number: 10191327
    Abstract: The disclosure discloses an edge-lit type backlight module, a display and a light guide plate. The edge-lit type backlight module includes at least two light guide plates disposed to be overlapped. Each of the light guide plates respectively includes a light-emitting surface, a bottom surface and at least one light incident surface. The bottom surface of the light guide plate on an upper layer and the light-emitting surface of the light guide plate on a lower layer are disposed opposite. Light sources are disposed on the light incident surfaces of each of the light guide plates, and disposed to be mutually independent. In travel directions of light of the light sources, each of the light guide plates is disposed with light-emitting regions and total reflection regions disposed alternately. The light emitted from the light sources is totally reflected in the total reflection regions.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: January 29, 2019
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Guowei Zha
  • Patent number: 10180526
    Abstract: A front light module including a light guide plate, a light source, a transparent cover lens and an annular connecting unit is provided. The light guide plate includes a first surface, a plurality of micro-structure groups, a second surface and a light entering surface. The first surface includes a first area and a second area surrounding the first area. The micro-structure groups are disposed on the first surface and within the first area. The micro-structure groups have a plurality of adjacent micro-structures, and the micro-structures groups are separate from each other. The light entering surface connects the first surface and the second surface. The light source is disposed beside the light entering surface. The annular connecting unit connects the second area of the first surface and the transparent cover lens, and keeps a gap between the micro-structure groups and the transparent cover lens. A display device is also provided.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: January 15, 2019
    Assignee: E Ink Holdings Inc.
    Inventors: Yu-Nan Pao, Chia-Chuang Hu, I-Jeng Chen, Chin-Ju Hsu, Hsin-Tao Huang
  • Patent number: 10161864
    Abstract: A display device component includes an optical waveguide having a surface; a first material formed on a portion of the surface of the optical waveguide; and a second material formed on a portion of the first material. The first material has light scattering properties.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: December 25, 2018
    Assignee: Xerox Corporation
    Inventors: David C. Craig, Chu-Heng Liu
  • Patent number: 10127865
    Abstract: A sensing device for sensing a backlight density of a panel module is disclosed. The panel module includes a panel, a back plate and a holding frame. The back plate has an opening formed thereon and is for installing the panel onto the holding frame. The sensing device includes a sensor module and a base. The sensor module is for sensing a light projected via the opening and generated by the panel. The base is disposed between the back plate and the holding frame. The base includes a main body and a resilient structure. The main body is for containing the sensor module. The resilient structure extends from the main body and resiliently abuts against the holding frame. The resilient structure presses the main body onto the back plate when resilient abutting against the holding frame, such that the back plate and the main body cooperatively covers the sensor module.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: November 13, 2018
    Assignee: BenQ Corporation
    Inventors: Ho-Shih Wu, Chih-Ren Chen
  • Patent number: 10082692
    Abstract: A display apparatus includes a display panel, a backlight unit, a bottom cover, a printed circuit board (“PCB”) electrically connected to the display panel, a shield cover disposed on a lower surface of the PCB, and including a planar part on which a hook opening part is defined, and a bent part bent from the planar part to face the side wall part, and a top cover which is coupled to the bottom cover and includes a side surface part surrounding the side wall part, and a hook part extending from one end of the side surface part, inserted into the hook opening part, and coupled to the shield cover.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: September 25, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kwangsun You, Keunho Lee
  • Patent number: 10054732
    Abstract: A directional display may include a waveguide. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows. The brightness of the directional display can be increased. An efficient and bright autostereoscopic display system can be achieved.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: August 21, 2018
    Assignee: RealD Spark, LLC
    Inventors: Michael G. Robinson, Graham J. Woodgate
  • Patent number: 10007381
    Abstract: A mobile terminal including a light guide plate; a plurality of light sources disposed on at least one side of the light guide plate; a display positioned on a front surface of the light guide plate; and a controller configured to control the display to operate in one of operation states including a first state, in which all of the plurality of light sources are activated such that an entire portion of the display is illuminated, and a second state, in which at least one light source corresponding to a partial portion of the display among the plurality of light sources is selectively activated such that the partial portion of the display is illuminated, perform an operation in accordance with a first touch input applied to the partial portion of the display in the second state, and not perform an operation in accordance with a second touch input applied to a remaining portion excluding the partial portion of the display in the second state.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: June 26, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Seungmin Seen, Seongcheol Lee, Gunseek Oh, Sangjo Ryu, Jeongwoo Lee
  • Patent number: 9964272
    Abstract: A vehicle lamp includes a heat-dissipation base, a light source mounted on the heat-dissipation base, a lightguide having a light incident surface for receiving light from the light source, a light outgoing surface for projecting a portion of light received from the light source, opposite upper and bottom surfaces disposed between the light incident and light outgoing surfaces, and a light-guiding structure formed on the upper surface. The lightguide is configured to guide a portion of a light beam entering the light incident surface to the light outgoing surface, with the light-guiding structure configured to guide another portion of the light beam entering the light incident surface to be outputted through the bottom surface. A condensing lens is further provided to receive light from the light outgoing surface and the bottom surface.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: May 8, 2018
    Assignee: Lextar Electronics Corporation
    Inventors: Yu-Min Lin, Shih-Kai Lin, Mong-Ea Lin
  • Patent number: 9949352
    Abstract: An illuminating device may include optical sources, a diffusion plate having emission regions corresponding to the optical sources, and a control unit configured to control lighting-up/lighting-out and an emission intensity of the optical sources based upon a schedule when carrying out performance on an optical travel by the diffusion plate. The emission regions each may have a predetermined length and extend in a longitudinal direction of the diffusion plate. In the schedule, a light-up/light-out state of each optical source and an emission intensity of an optical source to be lit up are set based upon an average illuminance in an illuminance distribution of the diffusion plate by combining illuminances of lights emitted from the emission regions. For realizing a temporal change of the average illuminance set, the light-up/light-out state of each optical source and emission intensity of the optical source to be lit up in each time point are set.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 17, 2018
    Assignee: Valeo Japan Co., Ltd.
    Inventors: Masamichi Ishibashi, Masaaki Toju
  • Patent number: 9903553
    Abstract: A light-guiding pillar used in a vehicle lamp includes a major structure and a light-guiding structure. The major structure has a light incident surface, a light outgoing surface, an upper surface, and a bottom surface. The upper surface and the bottom surface are disposed between the light incident surface and the light outgoing surface, in which the upper surface and the bottom surface are opposite to each other. The major structure is configured to guide a portion of a light beam entering the major structure through the light incident surface to the light caving surface. The light-guiding structure is disposed on the upper surface and configured to guide another portion of the light beam entering the major structure through the light incident surface from the upper surface to the bottom surface with passing through the bottom surface.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: February 27, 2018
    Assignee: Lextar Electronics Corporation
    Inventors: Yu-Min Lin, Shih-Kai Lin, Mong-Ea Lin
  • Patent number: 9889793
    Abstract: In one aspect, the disclosure relates to a light emitting assembly for an instrument panel, which includes a light guide assembly a light guide assembly body and at least one light transmissive leg extending from the light guide assembly body. The leg has a light input surface along an edge in close proximity to a light emitting diode. The leg may be integral with the body at an intersection that forms a prismatic Y shaped light reflective structure at the body. The prismatic Y shaped light reflective structure forms an angle of reflection surface at the intersection with the body of a predetermined angle of reflection to reflect light from the leg to the light guide assembly body. The reflected light ray is refracted substantially uniformly through the light guide assembly body to produce substantially uniform illumination of the light guide assembly.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: February 13, 2018
    Assignee: N.S. International, LTD
    Inventors: Arul Krishna, Sibing Xu, Anirudh N. Hegde
  • Patent number: 9857502
    Abstract: Provided is a method of fabricating a thick film of a large area substrate. The method of fabricating comprises applying a first rein on a base substrate to form a rein partition, and applying a second resin on an inner area formed by the resin partition. According to the present invention, by forming a first partition formed with resin when a film of a large area is coated and then by coating the film, uniformity and reliability of the coating can be improved.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: January 2, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Myung Jun Kim, Yun Gu Kang, Myoung Soo Ahn
  • Patent number: 9817172
    Abstract: The disclosure is related to a backlight module comprising a light guide plate, a light source assembly and a frame. The frame surrounds the light guide plate. The light source assembly is arranged between the light incident surface of the light guide plate and the frame. The light source assembly comprises a substrate, a light emitting body and a transparent body. The transparent body packages the light emitting body on the substrate. The outer surface of the transparent body facing the light emitting body is a light emitting surface having a groove formed thereon facing the light incident surface of the light guide plate. The groove enables the light emitted from the transparent body to congest toward the direction of the center of the light guide plate to increase the optical coupling efficient of the backlight module. The disclosure further provides a liquid crystal display device.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: November 14, 2017
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventors: Jie Zeng, Yanxue Zhang
  • Patent number: 9810830
    Abstract: A backlight module including a back plate which includes a flat plate, first and second wedges respectively formed at both ends of the flat plate, and a plurality of third wedges formed between the first and second wedges on the flat plate, wherein an angle between a long inclined plane of the first wedge and a flat plate, an angle between a long inclined plane of the second wedge and a flat plate, and an angle between an inclined plane of the third wedge and the flat plate are obtuse angle, acute angle and acute angle respectively; a first light source assembly disposed on the first wedge; a second light source assembly disposed on the second wedge; and a plurality of third light source assemblies, wherein each third light source assembly is disposed on the corresponding third wedge.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: November 7, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRON ICS TECHNOLOGY CO., LTD.
    Inventor: Yong Fan
  • Patent number: 9798065
    Abstract: The disclosure is related to a light guide plate having a light-emitting surface, wherein a plurality of V-shaped grooves is formed on the light-emitting surface; each of the V-shaped grooves extends along a curved path. The V-shaped grooves of the light guide plate extend along the curved path to avoid the light guide plate from collecting light in a single direction. The interference fringes of the light guide plate are reduced, thereby improving the uniformity of light emission of the light guide plate.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: October 24, 2017
    Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd, Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventors: Lingyan Chen, Yanxue Zhang, Zhongjie Liu
  • Patent number: 9728594
    Abstract: A display device is disclosed. In one aspect, the display device includes a substrate, a display unit formed over the substrate and a thin film encapsulation layer covering the display unit. The display device further includes an encapsulation substrate formed over the thin film encapsulation layer and encapsulating the display unit and a photosensor formed on an end of the thin film encapsulation layer.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: August 8, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jaebeom Choi, Yunmo Chung
  • Patent number: 9688191
    Abstract: A vehicle display assembly including at least one flexible light guide in a path of illumination to illuminate predetermined different shapes, contours, areas and/or surfaces of the vehicle display assembly. The flexible light guide is silicon or other material suitable to provide flexibility to allow use of the same flexible light guide in different vehicle display assembly shapes and to be a light guide conductor. The flexible light guide is mountable adjacent to at least one light source within the vehicle display assembly to illuminate the predetermined shapes, contours, areas and/or surfaces of the vehicle display assembly visible to vehicle occupants.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: June 27, 2017
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Maria Nohemi Bravo Solis, Monica Abigail Aceves Mendoza, Humberto Merchand Alvarado
  • Patent number: 9678264
    Abstract: A light guide plate has a light guide plate member having a light incident surface on an end face of the light guide member, and a light emitting surface on a front surface of the light guide plate member, wherein the light incident surface is structured to have light incident thereon, and wherein the light emitting surface is structured to widen and emit light incident thereon out of the light guide plate member, and a directivity changing unit arranged on a light incident end portion of the light guide plate member on the front surface or a back surface of the light guide plate member. The directivity changing unit has a first inner inclined surface and a second inner inclined surface that change a directivity of the incident light within the directivity changing unit to widen the light laterally with respect to a direction perpendicular to the light incident surface.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: June 13, 2017
    Assignee: OMRON Corporation
    Inventors: Masayuki Shinohara, Norikazu Kitamura, Kazuhide Hirota
  • Patent number: 9658383
    Abstract: A display device is disclosed, which comprises: a display panel; and a backlight module corresponding to the display panel. The backlight module comprises: a light source; and a light guide plate adjacent to the light source and having a surface, wherein at least one light guide dot with an embossment and a cavity is disposed on the surface of the light guide plate, and the cavity surrounds the embossment.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: May 23, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Yen-Liang Chen, Meng-Ko Tsai, Kuei-Ling Liu
  • Patent number: 9632231
    Abstract: A light guide plate includes a light exit surface, a reflection surface opposite to the light exit surface, and at least one light incidence surface connecting to the light exit surface and the reflection surface. The reflection surface includes a plurality of minute projection structures projecting toward interior of the light guide plate. Each of the minute projection structures includes at least two side faces coated with a high reflectivity material. The at least two high reflectivity material coated side faces form at least one included angle pointing toward the at least one light incidence surface. The minute projection structures have a distribution density that is decreased with an increase of a distance thereof from the light sources.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: April 25, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Gege Zhou
  • Patent number: 9581735
    Abstract: A backlight unit includes a light source and a two-dimensional micro lens array (MLA) sheet including a plurality of lens unit each having a conic lens shape with a cross-section, taken through the lens axis, having a shape defined by the equation: y = x 2 / r 1 + 1 - ( 1 + k ) ? ( 1 / r ) 2 ? x 2 where k is a constant with a value of less than or equal to ?1, and r is the radius of curvature at the peak of the lens unit.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Byoung-Mook Kim, Kwang-Seung Park, Byung-Su Park, Yune-Hyoun Kim, Sang-Choll Han, Jin-Hyun Kim
  • Patent number: 9515291
    Abstract: Provided is a light emitting apparatus including a substrate including a plurality of light emitting devices, wherein the substrate further includes a plurality of first members configured to diffuse light emitted from at least one of the light emitting devices, and a second member that is positioned between the first members, wherein the second member includes a light absorbing layer.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: December 6, 2016
    Assignee: Sony Corporation
    Inventors: Yasuyuki Kudo, Jiro Yamada, Seiichiro Jinta, Shigeyuki Matsunami
  • Patent number: 9459397
    Abstract: An edge lit lighting device including a housing, a power circuit, a light source, and an optic. The power circuit may be carried by the housing, and adapted to form an electrical connection with an external power source. The light source may be carried by the housing and electrically connected to the power circuit. The optic may be carried by the housing and positioned in optical communication with the light source. The optic may further include a receiving surface positioned adjacent to the light source, and first and second emitting surfaces. The first emitting surface may include a plurality of features configured to redirect light defined as redirected light in a direction of the second emitting surface, the redirected light being emitted from the second emitting surface. The lighting device may further include pluralities of optics of light sources.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: October 4, 2016
    Assignee: Lighting Science Group Corporation
    Inventors: Mark Penley Boomgaarden, Ricardo Romeu, Eric Holland, Ryan Kelley
  • Patent number: 9366424
    Abstract: A light source device includes: a substrate having a front surface on which a light-emitting diode is mounted; and a case having a bottom plate that holds the substrate, wherein a driver circuit for driving the light-emitting diode is mounted on a rear surface of the substrate that is opposite to the front surface thereof, wherein an opening corresponding to a size of the light-emitting diode is formed in the bottom plate of the case, wherein the front surface of the substrate is fixed to a rear surface of the bottom plate of the case from outside of the case with the light-emitting diode fitted in the opening, and wherein a coating material with an emissivity of equal to or higher than 0.9 and equal to or lower than 1.0 is applied to an outer surface of four side walls of the case.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: June 14, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kenji Takase
  • Patent number: 9261639
    Abstract: An optical display device comprises a light source, a pixelated display panel, and a light guide to collect light from the light source and to transport the light via total internal reflection. A first surface of the light guide includes recessed regions having a circular-based profile, such as a quarter-circle profile, to reflect the light from the light guide to the pixelated display panel. A first optical layer covering at least a portion of the first surface of the light guide fills the recessed regions included in the first surface of the light guide. A second optical layer covering at least a portion of a second surface of the light guide transmits the reflected light to the pixelated display panel.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 16, 2016
    Assignee: Modilis Holdings LLC
    Inventor: Tero Johannes Tuohioja
  • Patent number: 9235080
    Abstract: A display device and terminal equipment including the display device are described. The display device includes a first panel having a first area; a liquid crystal display panel disposed below the first panel and having a second area, configured to display an image based on an image signal; a backlight disposed below the liquid crystal display panel, configured to produce light; a light guide plate disposed below the liquid crystal display panel and having a third area, configured to fix the backlight and cause the light produced by the backlight to be uniformly irradiated on the liquid crystal display panel; and a reflection unit disposed below the light guide plate, configured to reflect the light produced by the backlight to the light guide plate. A space for accommodating and protecting the liquid crystal display panel and the backlight is formed between the light guide plate and the first panel.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: January 12, 2016
    Assignees: LENOVO (BEIJING) CO., LTD., BEIJING LENOVO SOFTWARE LTD.
    Inventors: Zhou Yu, Xiufeng He, Zhenyuan Zhao
  • Patent number: 9207390
    Abstract: Light guide structures that include a transparent plate having a first end and a second end; and a plurality of transparent light guide members, each transparent light guide member extending from the first end to the second end along one surface of the transparent plate and being configured to emit white light in response to light applied thereto are described.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: December 8, 2015
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Kenichi Hashizume
  • Patent number: 9164225
    Abstract: Light guide structures that include a transparent plate having a first end and a second end; and a plurality of transparent light guide members, each transparent light guide member extending from the first end to the second end along one surface of the transparent plate and being configured to emit white light in response to light applied thereto are described.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: October 20, 2015
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Kenichi Hashizume
  • Patent number: 9132684
    Abstract: A light guide plate and a manufacturing method thereof are disclosed. The light guide plate includes a substrate, a screen-printed layer, and a light-solidified layer. The substrate has a first surface and a second surface, and the first surface and the second surface are opposite. The screen-printed layer is formed on the first surface of the substrate by a screen-printing process. The light-solidified layer is formed on the second surface of the substrate by a light-solidification and imprinting process. The screen-printed layer has a plurality of screen point patterns. The light-solidified layer has a plurality of micro-structures.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: September 15, 2015
    Assignee: DARWIN PRECISIONS CORPORATION
    Inventors: Jen-Shun Lin, Bai-Chen Chang, Kun-Chih Pan
  • Patent number: 9128225
    Abstract: The present invention relates to a backlight unit with sag control patterns, comprising a light source formed in a side surface of a light guide plate; and a plurality of optical patterns formed on a lower surface of the light guide plate, sag of the plurality of optical patterns increasing as the optical patterns become more distant from the light source. By controlling sag of optical patterns formed in a light guide plate, efficiency of light emitted from a backlight unit can be improved and uniformity of the light can be maintained. Also, since sag of optical patterns can be controlled, by increasing the number of optical patterns (by improving fill factor), light efficiency and uniformity can be controlled easily. Also, compared with a conventional method for manufacturing white dot patterns, white dot patterns can be more efficiently manufactured in terms of development time and costs.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: September 8, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Dong Hyun Lee, Dong Mug Seong, Beom Sun Hong, Jun Phill Eom
  • Patent number: 9039268
    Abstract: Embodiments of the invention disclose a backlight unit, including: a light guide plate, a light source member, a reflection film, wherein: the light guide plate (LGP) includes a light incident side, a light emission side and a bottom side opposite to the light emission side, the light guide plate is for emitting light entered from the light incident side through the light emission side; the light source member is disposed on the light incident side of the LGP and light emitted by the light source member enters the LGP through the light incident side of the LGP; the reflection film is at least disposed on the bottom side of the LGP and is for reflecting light back into the LGP; wherein a reflection structure is disposed on the bottom side of the LGP and a microstructure is disposed on the light emission side of the LGP.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: May 26, 2015
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Ruoyu Ma
  • Patent number: 9039222
    Abstract: A backlight module includes a substrate, a plurality of LED packages mounted on the substrate and a light diffusion board located above the LED packages. The light diffusion board includes a light incident surface facing toward the LED packages and a light output surface. A plurality of light-guiding portions is configured extending from the incident surface of the light diffusion board toward the LED package. Each light-guiding portion comprises a concave surface at an outer periphery thereof. A diameter of each light-guiding portion decreases gradually from light diffusion board toward the LED packages. The concave surface of each light-guiding portion is recessed inwardly from the outer periphery of the light-guiding portion. Light from the LED packages and emitting into the light-guiding potions is divergently and uniformly adjusted into the light diffusion board by the concave surfaces of the light-guiding portions.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: May 26, 2015
    Assignee: ADVANCED OPTOELECTRONIC TECHNOLOGY, INC.
    Inventors: Chao-Hsiung Chang, Pin-Chuan Chen, Li-Hsiang Chen