Edge Lit Type Light Guide Behind Liquid Crystal Patents (Class 349/65)
  • Patent number: 11670747
    Abstract: According to an aspect, a display device includes: a substrate; a plurality of pixels provided to the substrate; a plurality of light emitting elements provided to the pixels; and a first light diffusion layer including a plurality of light diffusion structures and having a first surface and a second surface opposite to the first surface, the second surface facing the substrate with the light emitting elements interposed between the second surface and the substrate. The light diffusion structures each include a plurality of high refractive index layers and a plurality of low refractive index layers. The high refractive index layers and the low refractive index layers are alternately layered in a thickness direction of the first light diffusion layer. The high refractive index layers and the low refractive index layers are each curved and recessed in a direction from the first surface toward the second surface.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: June 6, 2023
    Assignee: Japan Display Inc.
    Inventor: Osamu Itou
  • Patent number: 11670251
    Abstract: The resolution of a low-resolution image is made high and a stereoscopic image is displayed. Resolution is made high by super-resolution processing. In this case, the super-resolution processing is performed after edge enhancement processing is performed. Accordingly, a stereoscopic image with high resolution and high quality can be displayed. Alternatively, after image analysis processing is performed, edge enhancement processing and super-resolution processing are concurrently performed. Accordingly, processing time can be shortened.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: June 6, 2023
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Hajime Kimura
  • Patent number: 11644707
    Abstract: A viewing angle expansion film, a method for preparing the same, and a display device are provided. The viewing angle expansion film includes a first film layer having a flat layer, a plurality of first projections, and a plurality of second projections, and a second film layer disposed on the first film layer. The plurality of first projections and the plurality of second projections are arrayed on the flat layer. The second film layer is filled in gaps between the first projections and the second projections adjacent to the first projections, gaps between adjacent first projections, and gap between adjacent second projections. A refractive index of the second film layer is greater than a refractive index of the first film layer.
    Type: Grant
    Filed: August 31, 2022
    Date of Patent: May 9, 2023
    Assignees: Huizhou China Star Optoelectronics Display Co., Ltd., TCL China Star Optoelectronics Technology Co., Ltd.
    Inventors: Guang Zeng, Yuan Shao, Yue Wang, Hongshan Yin
  • Patent number: 11630349
    Abstract: A backlight module and a display having the same are provided. The backlight module includes a front bezel, a back cover, and a light source. The back cover is disposed opposite to the front bezel. The back cover includes a body and one or more heat dissipation elements. The body has one or more openings corresponding to one or more heat sources. The one or more heat dissipation elements are disposed in the one or more openings, respectively. The light source is disposed between the front bezel and the back cover.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: April 18, 2023
    Assignee: Qisda Corporation
    Inventor: Chun-Ting Chen
  • Patent number: 11630343
    Abstract: A display apparatus includes a light source emitting light; a light guide plate having a first surface and a second surface, and spreading light emitted from the light source therein to emit light through the first surface; and a local dimming unit configured to pass or scatter light emitted through the second surface of the light guide plate according to a position. The local dimming unit may include: an electro-optical layer configured to which optical properties change according to an electric field; and a plurality of electrodes positioned on the same plane to generate the electric field.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: April 18, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
  • Patent number: 11619845
    Abstract: This disclosure relates to a display device which includes a light transmissible layer and a second material. The light transmissible layer includes a first material, wherein the first material generates a first color transformation from a first color to a second color after being exposed under a light of the first wavelength range. The second material is either included in the light transmissible layer or has a projective area overlapped with the light transmissible layer. The second material generates a second color transformation from the second color to the first color after being exposed under a light of the first wavelength range.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: April 4, 2023
    Assignee: AU OPTRONICS CORPORATION
    Inventor: Shih-Ping Lin
  • Patent number: 11579481
    Abstract: A display panel and a display device are provided. The display panel includes a display component layer and a first anti-reflective film arranged on the display component layer. The display component layer includes a first polarizer, a first substrate arranged on the first polarizer, a second substrate arranged on the first substrate and a second polarizer arranged on the second substrate. The anti-reflective film on the second polarizer may reduce reflected light energy while increasing transmitted light energy.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: February 14, 2023
    Assignee: JRD COMMUNICATION (SHENZHEN) LTD.
    Inventors: Yafang Xi, Ke Lin, Zhuwei Qiu, Jitao Ma
  • Patent number: 11531233
    Abstract: A light conversion structure applied to a display device, and a backlight module, a color filter substrate, and a display device including the light conversion structure are provided. The light conversion structure includes a light filter structure (100) including a first optical film layer (110) and a second optical film layer (120) which are alternately arranged and attached to each other in a total number of N, N is an even number, one of a surface (111) of the first optical film layer (110) far away from the second optical film layer (120) and a surface (121) of the second optical film layer (120) far away from the first optical film layer (110) is a light incident surface (1001) of the light filter structure (100), and the other one is a light-exiting surface (1003).
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: December 20, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ruiyong Wang, Yang You, Ruizhi Yang, Yun Qiu
  • Patent number: 11526047
    Abstract: A display device includes: a backlight unit, a camera hole penetrating the backlight unit, a camera in the camera hole, a liquid crystal panel on the backlight unit, the liquid crystal panel including a transparent portion on the camera hole, and at least one light-blocking member in the camera hole, the at least one light-blocking member being configured to reduce one or more of: light leakage from the camera hole and introduction of impurities into the camera hole.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: December 13, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Ji-Cheol Son, Ji-Soon Oh, Yeoun-Jei Jung, Sung-Sik Son, Chan-Hyeok Park
  • Patent number: 11490531
    Abstract: A display frame structure and a display are disclosed. The display frame structure includes an integrally formed main body, where the integrally formed main body is provided with a first connecting portion and a second connecting portion, the first connecting portion is configured to connect a first component on a first side of the integrally formed main body, the second connecting portion is configured to connect a second component on a second side of the integrally formed main body that is opposite to the first side, and the integrally formed main body is also provided with a plurality of passage holes.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: November 1, 2022
    Assignee: BEIJING SMART-AERO DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xing Zhao, Zhiguo Shen
  • Patent number: 11487056
    Abstract: A light guide plate includes a light incident surface and a bottom surface arranged adjacently. The bottom surface is provided with a plurality of first columnar structures. Each of the first columnar structures extends along a first direction from a vicinity of the light incident surface and toward away from the light incident surface. An accommodating space is formed between any two adjacent first columnar structures. A side of these first columnar structures away from the bottom surface is provided with a plurality of light exit microstructures. The light guide plate has an effect of preventing scratches. A backlight module includes the light guide plate mentioned above and a light source.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: November 1, 2022
    Assignee: Coretronic Corporation
    Inventors: Tzeng-Ke Shiau, Shih-Wei Liu
  • Patent number: 11480796
    Abstract: The invention discloses a three-dimensional display module using optical wave-guide for providing directional backlights. This display module includes a wave-guide backlight unit with time-sequential directional light sources, a display device, a wavefront modulation device or a light splitting device, and other components. The wave-guide backlight unit with time-sequential directional light sources includes a sequential-switching light-source array, a relay device, and an optical wave-guide device. Each light source of the sequential-switching light-source array provides backlight of corresponding vector characteristics to the display device, making optical message displayed by the display device being guided to the corresponding viewing zone/viewing zones. Through the technology routes of multiple-view-for-one-pupil or/and Maxwellian view, the three-dimensional display module implements displays free from the vergence-accommodation conflict.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: October 25, 2022
    Assignee: SUN YAT-SEN UNIVERSITY
    Inventors: Lilin Liu, Dongdong Teng
  • Patent number: 11474395
    Abstract: A waveguide display includes a substrate transparent to at least one of visible or near infrared light, and a grating on the substrate. The grating includes ridges formed using a birefringent material and is configured to selectively couple incident light in a first polarization state into or out of the substrate. The birefringent material in the ridges is characterized by an optic axis parallel to a plane that includes a grating vector of the grating.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: October 18, 2022
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Tanya Malhotra, Liangyu Qiu, Andrew John Ouderkirk
  • Patent number: 11460739
    Abstract: A display device includes: an array substrate including a plurality of first light-transmitting electrodes each disposed in a corresponding one of pixels; a counter substrate including positions overlapping the first light-transmitting electrodes and provided with a second light-transmitting electrode; a liquid crystal layer including polymer-dispersed liquid crystals filled between the array substrate and the counter substrate; and at least one light source configured to emit light toward a side surface of the counter substrate. The array substrate includes, in each of the pixels, a third light-transmitting electrode that at least partially overlaps the first light-transmitting electrode in the plan view with an insulating layer interposed therebetween. An area of the third light-transmitting electrode in the pixel in a display region closer to the light source is larger than an area of the third light-transmitting electrode in the pixel in a display region farther from the light source.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: October 4, 2022
    Assignee: Japan Display Inc.
    Inventors: Manabu Mizuno, Yoshihide Ohue, Hiroki Sugiyama, Kentaro Okuyama
  • Patent number: 11460623
    Abstract: An LED lighting lamp comprises an essentially annular perimetric frame positioned about an axis; a plurality of LEDs arranged along a radially inner perimetric edge of the frame and angularly spaced apart from one another about the axis; and a substantially flat and completely transparent light-guide plate, having two opposite faces substantially perpendicular to the axis and a radially outer perimetric edge facing the LEDs; at least one face of the light-guide plate is provided with an engraving pattern, formed by a plurality of notches shaped so as to extract light from the light-guide plate through said at least one face.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: October 4, 2022
    Inventor: Ernesto Gismondi
  • Patent number: 11415834
    Abstract: A display apparatus includes a liquid crystal panel; a plurality of light sources configured to emit blue light; a reflective sheet comprising four edge portions, wherein a plurality of holes are disposed on the reflective sheet, the plurality of holes comprises a first hole and a second hole on each of the four edge portions of the reflective sheet, each of the four edge portions comprises an edge of the reflective sheet, the first hole is disposed at a first distance from the edge of the reflective sheet, and the second hole is disposed at a second distance from the edge of the reflective sheet, wherein the second distance is greater than the first distance; and a plurality of light conversion dots comprising a plurality of first light conversion dots and a plurality of second light conversion dots.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: August 16, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoonki Park, Hyungjin Kim, Yongsung Yoo, Youngwook Jung, Minnyeong Han
  • Patent number: 11415742
    Abstract: The disclosure provides a backlight module and a display device. The backlight module includes a light guide plate including a light emitting surface, a lateral surface, and a light incident surface disposed correspondingly to the lateral surface. The light emitting surface is connected to the lateral surface and the light incident surface. A light source is disposed correspondingly to the light incident surface and is configured to emit light toward the light incident surface. An optical film is disposed on the light emitting surface. A fixing component is disposed on the light incident surface or the lateral surface and is configured to fasten the optical film on the light emitting surface so that the optical film can be evenly expanded uniformly along a direction parallel to the light source after being heated.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: August 16, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Shiyuan Xiao
  • Patent number: 11391877
    Abstract: A backlight source is provided which includes a light guide plate 10 and a light-emitting unit 20. The light guide plate 10 includes a first surface and a second surface disposed oppositely. The light-emitting unit 20 is located on the side of the light guide plate where the first surface disposed. The grating layer 30 includes at least one grating unit configured to diffract light emitted by the light-emitting unit 20. The overall structure of the backlight source is no longer limited by the distance between the LEDs and the first layer diffusion layer, and therefore the thinning and lightening of the backlight source is realized. A manufacturing method of a backlight source and a display device are further provided.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: July 19, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Wei Wang, Huijuan Wang, Yafeng Yang, Xiaochuan Chen, Xue Dong, Xiandong Meng, Xianqin Meng, Jifeng Tan
  • Patent number: 11393879
    Abstract: A light-emitting device comprising first and second light-emitting elements in a display region, and first and second dummy elements in a dummy region is provided. Each of the light-emitting elements, and the dummy elements includes a reflector arranged, a first electrode arranged above the reflector, a light-emitting layer arranged above the first electrode, and a second electrode arranged above the light-emitting layer. A difference between a distance from the reflector to the light-emitting layer in the first light-emitting element and a distance from the reflector to the light-emitting layer in the second light-emitting element is larger than a difference between a distance from the reflector to the light-emitting layer in the first dummy element and a distance from the reflector to the light-emitting layer in the second dummy element.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: July 19, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroaki Sano, Koji Ishizuya
  • Patent number: 11366348
    Abstract: A display device includes: a backlight unit (BU), a liquid crystal panel (LCP) on the BU, a glass cover on the liquid crystal, a camera hole (CH) defined by the BU and the LCP, the CH penetrating the BU and the LCP, a light-blocking member (LBM) in the CH, the LBM reducing: light leakage from the CH and/or introduction of impurities into the CH, a lower polarizing plate (LPP) between the BU and the LCP, and an upper polarizing plate (UPP) between the glass cover and the LCP, the CH penetrating the LPP and the UPP, and a through-hole defined by and penetrating the UPP, the through-hole having a position corresponding to the CH, the through-hole having a size corresponding to the CH. The LBM includes: a light-blocking tape, and a border mold. The light-blocking tape is attached to the LPP, the border mold, and the BU.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: June 21, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Ji-Cheol Son, Ji-Soon Oh, Yeoun-Jei Jung, Sung-Sik Son, Chan-Hyeok Park
  • Patent number: 11367403
    Abstract: A display apparatus includes a plurality of light sources configured to emit light; a light guide plate having a first surface and a second surface, configured to spread light emitted from the plurality of light sources therein to emit light through the first surface; and a local dimming unit configured to reflect or scatter light emitted through the second surface of the light guide plate according to a location. The local dimming unit may include an electro-optical layer configured to change optical properties according to an electric field; a plurality of electrodes located on the same plane, configured to generate the electric field; and a controller configured to change a voltage applied to the plurality of electrodes according to an image.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 21, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
  • Patent number: 11340508
    Abstract: A display device according to an aspect includes: an array substrate including a plurality of first light-transmitting electrodes each disposed in a corresponding one of pixels; a counter substrate including positions that overlap the first light-transmitting electrodes in a plan view and are provided with a second light-transmitting electrode; a liquid crystal layer including polymer-dispersed liquid crystals filled between the array substrate and the counter substrate; and at least one light emitter configured to emit light toward a side surface of the counter substrate. The array substrate includes, in each of the pixels, a third light-transmitting electrode and a conductive metal layer. The third light-transmitting electrode at least partially overlaps the first light-transmitting electrode in the plan view with an inorganic insulating layer interposed therebetween, and the conductive metal layer is stacked on the third light-transmitting electrode.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: May 24, 2022
    Assignee: Japan Display Inc.
    Inventors: Hiroki Sugiyama, Yoshihide Ohue, Manabu Mizuno, Kentaro Okuyama
  • Patent number: 11340393
    Abstract: A backlight module, a method of manufacturing the backlight module, a display device and an illuminating device are disclosed. The backlight module includes: a light guide plate having a first surface and a second surface opposed to each other and at least one side surface between the first surface and the second surface, the side surface being provided with a first light reflecting structure and having an acute angle with respect to the first surface; a light source disposed at a side of the first surface, an orthographic projection of the light source onto the first surface being at an edge portion of the first surface adjacent to the side surface, wherein the light emitted by the light source is at least partially reflected by the first light reflecting structure after entering the light guide plate through the first surface of the light guide plate.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: May 24, 2022
    Assignees: FUZHOU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuezhen Su, Jianming Huang, Dongxi Li, Li Cheng, Weiqiang Li, Yabin Lin, Wanping Pan, Jinshu Wu
  • Patent number: 11340494
    Abstract: The present invention provides a backlight module and a display device. A first notch is defined in a back plate of the backlight module. The first notch corresponds to a second notch defined in the display panel, and a light source set is disposed on the back plate located on two sides of the first notch, which lowers a dimension of a lower bezel of the display device and enhances a screen ratio such that light of the backlight module entering the display panel becomes more uniform, which enhances the differential performance of the products and improves the market competitiveness of the products.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: May 24, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Peng Zhang
  • Patent number: 11333819
    Abstract: Disclosed includes a backlight assembly, a display device including such a backlight assembly and a method of obtaining backlight. The backlight assembly may comprise a light guide, a first grating on a first surface of the light guide and a light direction adjuster on a side of the first grating away from the light guide. The first grating may have a diffraction direction slanted relative to a thickness direction of the light guide and the light direction adjuster may be configured to change diffractive light coming from the first grating to a target direction.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: May 17, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Xiandong Meng, Wei Wang, Xianqin Meng, Qiuyu Ling, Jifeng Tan, Xiaochuan Chen
  • Patent number: 11320583
    Abstract: A backlight module comprises a frame unit, a plurality of light-emitting units, a first optical unit and a second optical unit. The frame unit includes a metal rear frame. The metal rear frame has a first carrying portion, and a second carrying portion spaced from the first carrying portion. The first carrying portion and the second carrying portion are not at the same height. One of the plurality of light-emitting units is disposed on the first carrying portion, and another one of the plurality of light-emitting units is disposed on the second carrying portion. The first optical unit is configured to receive the light generated from the light-emitting unit disposed on the first carrying portion, and the second optical unit is configured to receive the light generated from the light-emitting unit disposed on the second carrying portion. Through the structure of the metal rear frame, the light-emitting unit can directly contact the metal rear frame and the heat dissipation efficiency can be enhanced.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: May 3, 2022
    Assignees: RADIANT(GUANGZHOU) OPTO-ELECTRONICS CO, LTD, RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Lin-Yu Huang, Yi-Shan Lin, Ching-Chieh Yeh
  • Patent number: 11307344
    Abstract: A dual view zone backlight and dual-mode display employ a first backlight region to provide directional emitted light toward a first view zone and a second backlight region to provide broad-angle emitted light toward the first and a second view zone in a first mode. The dual-mode display includes a second backlight to provide broad-angle light toward both the first view zone and the second view zone in a second mode.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: April 19, 2022
    Assignee: LEIA INC.
    Inventors: David A. Fattal, Andre Krebbers
  • Patent number: 11294220
    Abstract: Provided is a display panel including a diffusion particle layer as well as a color filtering layer and a liquid crystal layer which are stacked on the diffusion particle layer. The diffusion particle layer includes a transparent medium layer and photosensitive polymeric monomers doped in the transparent medium layer, and a side surface of the transparent medium layer is a light incident surface. The photosensitive polymeric monomers are subjected to a polymerization reaction under an action of light incident from the light incident surface into the transparent medium layer, and the photosensitive polymeric monomers subjected to the polymerization reaction are configured to scatter the light.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: April 5, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xin Wang, Jianhua Du
  • Patent number: 11294244
    Abstract: According to one embodiment, an electro-optic device includes an electro-optic panel including a transparent base, a sealing portion provided in a peripheral area of the transparent base, a liquid crystal composition sealed by the transparent base and the sealing portion, an injection port for the liquid crystal composition provided in the peripheral area of the transparent base, and a light source arranged opposed to a side surface of the transparent base. The transparent base has a first side and a second side on an opposite side to the first side, the light source is opposed to the first side, and the injection port is opposed to the second side.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: April 5, 2022
    Assignee: Japan Display Inc.
    Inventors: Nobuko Fukuoka, Takenori Hirota
  • Patent number: 11294230
    Abstract: The present invention provides a backlight module comprising a light emitting unit including a light source and a light guide plate transmitting light from the light source; a light guide unit accumulatively placed on the top of the light emitting unit and transmitting the light to the upper part of the light guide unit; a mold frame containing the light emitting unit and the light guide unit and having a space between the side of the light guide unit and the mold frame; and a shielding portion formed at the side of the light guide unit to prevent light leakage transmitting from the side of the light guide unit to the outside of the light guide unit.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: April 5, 2022
    Assignee: LMS CO., LTD.
    Inventors: Ju Hyuk Yim, Se Jin Oh, Young Il Kim, Jee Hong Min, Byeong Cheol Kim, Ji Yeon Hong, Ha Young Jang
  • Patent number: 11294239
    Abstract: A backlight apparatus can include a light emitting element configured to emit visible light. The backlight apparatus can include a polarizing device including a prism situated to receive the visible light and to polarize the visible light to generate polarized light. The backlight apparatus can include a light guide panel configured to receive the polarized light at an input surface facing the polarizing device and to distribute the polarized light to a major surface of the light guide panel facing a display screen.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: April 5, 2022
    Assignee: Lumileds LLC
    Inventors: Mehdi Aas, Nicola Bettina Pfeffer, Arjen Gerben Van der Sijde, Erno Fancsali
  • Patent number: 11287698
    Abstract: A liquid crystal display apparatus includes a liquid crystal display panel and a backlight device disposed on a rear face of the liquid crystal display panel. The backlight device includes a chassis, a plurality of LED units being disposed on the chassis and arranged in at least one direction, and a cooling structure thermally coupled to rear faces of the plurality of LED units. The cooling structure includes a plurality of enclosed spaces, each of the plurality of enclosed spaces containing a coolant in which a liquid phase and a gas phase coexist at room temperature. Each of the plurality of enclosed spaces is disposed correspondingly to at least one LED unit among the plurality of LED units arranged in the at least one direction.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: March 29, 2022
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Mayumi Hori, Kazuhiko Negoro, Kenichi Iwamoto, Akira Toyama, Makoto Noda
  • Patent number: 11280453
    Abstract: A light guide is disclosed. The light guide may comprise a wedge shape. The light guide includes a light receiving surface, a light transmission region, a transition region, and a light emission region. Light emission region includes a first major surface and an opposing second major surface. The light emission region may include a plurality of steps disposed along a length of one or both of the major surfaces. The light emission region may also include a plurality of vertically-extending flutes along one or both of the major surfaces. A luminaire assembly incorporating the light guide is also disclosed.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: March 22, 2022
    Assignee: LMPG Inc.
    Inventor: Scott Santoro
  • Patent number: 11265409
    Abstract: A cover window is provided that includes a glass substrate, an optical pattern layer stacked on a first area and a second area of the glass substrate, the optical pattern layer having a plurality of patterns formed in the second area, a color layer stacked on the optical pattern layer having the plurality of patterns formed therein; and a mirror layer stacked on the color layer such that the mirror layer and the color layer are separated from each other, wherein in the second area of the glass substrate, natural light exhibits a color of the color layer due to an optical reaction between the color layer and the mirror layer.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: March 1, 2022
    Inventors: Dohyung Ha, Sungmin Shin, Kisung Kim, Minhoo Park
  • Patent number: 11248759
    Abstract: A panel lamp includes a lamp frame, light bars, an upper light diffusing plate, an upper light guiding plate, a lower light guiding plate, a lower light diffusing plate and a middle optical isolation element. The lamp frame includes at least three frame bars successively connected, each provided with an installation groove. Each installation groove is internally provided with one lamp bar, each light bar is provided with an upper lamp body and a lower lamp body. The upper light diffusing plate, upper light guiding plate, middle optical isolation element, lower light guiding plate and lower light diffusing plate are snap-fitted in the installation grooves. The upper lamp body faces a side edge of the upper light guiding plate, and the lower lamp body faces a side edge of the lower light guiding plate. The middle optical isolation element is between the upper lamp body and the lower lamp body.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: February 15, 2022
    Assignee: ACEVEL LIGHTING (GZ) CO., LTD
    Inventor: Meiqin Gao
  • Patent number: 11243735
    Abstract: An electronic panel has, in an embodiment, a multi-state device positioned between a plurality of display devices. The panel also has at least one light source and at least one processor operatively coupled to the display devices, the multi-state device, and the at least one light source. The at least one processor is configured or programmed to control a plurality of modes, including a see-through mode and a plurality of display modes operable to generate images directed toward different environments.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: February 8, 2022
    Assignee: Lim Industries LLC
    Inventor: Kevin J. Lim
  • Patent number: 11237315
    Abstract: Light-control panels including layered optical components are described in this application. An example of a light-control panel includes first and second glazing layers and first and second switchable components extending between the first and second glazing layers. The light-control panel also includes a thermal coating extending between the first switchable component and the first glazing layer and a filter extending between the first and second switchable components.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: February 1, 2022
    Assignee: Apple Inc.
    Inventors: David E. Kingman, Christopher D. Jones, James R. Wilson, Martin Melcher, Peter F. Masschelein
  • Patent number: 11221515
    Abstract: A backlight module adapted for use in an input device includes a circuit board, a light guide plate, a plurality of light-emitting elements, and a reflective structure. The light guide plate disposed on the circuit board is formed with a microstructure. The reflective structure includes a reflective plate disposed on the light guide plate opposite to the circuit board, and a first reflective layer disposed on the reflective plate opposite to the light guide plate. The first reflective layer is configured to allow a portion of a light emitted from the light-emitting elements to pass therethrough, and to allow a portion of the light to be reflected back to the light guide plate and then be diffuse reflected by the microstructure formed on the light guide plate.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: January 11, 2022
    Assignee: SUNREX TECHNOLOGY CORP.
    Inventors: Chih-Hsien Wu, Shih-Pin Lin, Li-Ling Huang, Hsiang-Yi Chen
  • Patent number: 11215871
    Abstract: A display device includes a translucent front plate, a plurality of display panels, and a backlight unit. The backlight unit includes a plurality of light guide plates and a light source that causes light to be incident on the light guide plates. Each of the display panels is bonded to the front plate and smaller than the front plate. The light guide plates are disposed facing the respective display panels in one-to-one correspondence.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: January 4, 2022
    Assignee: Japan Display Inc.
    Inventor: Shimon Itakura
  • Patent number: 11187851
    Abstract: A display device is provided. The display device includes a display panel that has a polarizer, a light source assembly, a first spacer, and a second spacer. The first spacer is disposed on the first side of the display panel near the light source assembly. The first spacer is located between the display panel and the light source assembly. The second spacer is disposed on the second side of the display panel, away from the light source assembly. The thickness of the first spacer is different than that of the second spacer.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: November 30, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Chien-Chih Chen, Chia-Chun Yang, Chin-Cheng Kuo
  • Patent number: 11187934
    Abstract: The present disclosure relates to a display apparatus including a liquid crystal panel, first and second polarizing plates coupled to the front and rear of the liquid crystal panel, respectively, and a light absorbing layer on which light passed sequentially through the first polarizing plate, the liquid crystal panel is incident, wherein the light absorbing layer is disposed on a front surface of the second polarizing plate positioned in the front of the liquid crystal panel. The light absorbing layer includes a first resin layer, a second resin layer on which light passed through the first resin layer is incident, the second resin layer having a refractive index higher than that of the first resin layer, and light absorbing portions disposed on the first resin layer and configured to absorb a part of light passing through the light absorbing layer. Through this configuration, a viewing angle of the display apparatus is improved.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: November 30, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ii Yong Jung, Wook-Jae Jeon, Young Chul Lee, Jun Sung Choi
  • Patent number: 11169321
    Abstract: A liquid crystal display device includes a liquid crystal panel having a reflection layer on a back surface opposite to a display surface of the liquid crystal panel, a light-guiding plate being closely fixed to the display surface and configured to diffusely reflect light incident and emit the light toward the display surface, a light source holding plate having a light source fixing plate on which a light source is mounted, and a back-side frame that includes a back-side portion disposed in parallel with the back surface of the liquid crystal panel and supported by the light source holding plate. A pair of positioning bent portions that are bent perpendicularly from the back-side portion and support the one end surface are formed on both sides at a lower end edge of the back-side portion along the one end surface.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 9, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shuji Yamashita, Hisanori Sasaki, Satoru Shibata
  • Patent number: 11163103
    Abstract: A lighting fixture includes a light emitting module, a first brightness enhancement component and a second brightness enhancement component. The light emitting module includes a light emitting surface. The first brightness enhancement component is disposed on the light emitting surface and corresponds to a first light emitting area of the light emitting module. The first brightness enhancement component concentrates light emitted from the first light emitting area with respect to a first plane, wherein the first plane is defined by a first axis and a first direction perpendicular to the first brightness enhancement component. The second brightness enhancement component concentrates light emitted from the second light emitting area with respect to a second plane, wherein the second plane is defined by a second axis and a second direction perpendicular to the second brightness enhancement component, and the first axis is not parallel to the second axis.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: November 2, 2021
    Assignee: Qisda Corporation
    Inventors: Zih-Ling Chen, Chih-Lung Huang
  • Patent number: 11136262
    Abstract: A fitout article or article of equipment for a kitchen or laboratory is provided. The article has a display device, a separating element, and a covering. The covering is on an interior side of the separating element and has a cutout at the separating element. The separating element has a light transmittance of at least 5% and at most 70%. The covering has light transmittance of at most 7% and a colour locus in the CIELAB colour space with coordinates L* of 20 to 40, a* of ?6 to 6 and b* of ?6 to 6, and the colour locus of D65 standard illuminant light, after passing through the substrate, is within a white region W1 determined in the chromaticity diagram CIExyY-2° by the coordinates: White region W1 x Y 0.27 0.21 0.22 0.25 0.32 0.37 0.45 0.45 0.47 0.34 0.36 0.29.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 5, 2021
    Assignee: SCHOTT AG
    Inventors: Evelin Weiss, Matthias Bockmeyer, Birgit Dörk, Friedrich Siebers, Christian Henn
  • Patent number: 11131874
    Abstract: An optical film includes a first pattern layer including a first base portion and first protruding portions disposed on the first base portion to be spaced apart from each other and having a first refractive index and a second pattern layer disposed on the first pattern layer and having a second refractive index. Each of the first protruding portions includes a first sub-protruding portion having a first width in a cross-section perpendicular to the first base portion, a second sub-protruding portion disposed between the first base portion and the first sub-protruding portion and having a width that increases from the first sub-protruding portion to the first base portion, and a third sub-protruding portion disposed on the first sub-protruding portion and having a width that decreases as a distance from the first sub-protruding portion increases.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: September 28, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyungseon Tak, Young Gu Kim, Jiyun Park, Jongho Son, Jongmin Ok, Sun-Young Chang, Hyelim Jang, Baekkyun Jeon
  • Patent number: 11131876
    Abstract: In a liquid crystal display device, the liquid crystal panel has a display surface of a planar shape on which a plurality of pixels are located. The front protective plate is located so as to face the display surface of the liquid crystal panel. The optical path changing portion is located between an emission surface of the front protective plate and an air layer located closer to the back side than the emission surface is and located closest to the emission surface. The optical path changing portion changes an optical path of light that enters the optical path changing portion so as to expand an emission angle when the incident light is emitted from the emission surface of the front protective plate.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: September 28, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuriko Takada, Akimasa Yuuki, Takanori Okumura, Tetsuya Satake, Taro Kumagai
  • Patent number: 11125929
    Abstract: A display system including a lightguide and first and second reflective layers disposed on opposite sides of the lightguide is provided. The lightguide has opposing first and second major surfaces and includes a light extraction pattern for extracting light that would otherwise be confined and propagate within the lightguide primarily by total internal reflection. Light extracted by the light extraction pattern exits the lightguide through at least one of the first and second major surfaces of the lightguide. Each of the first and second reflective layers has an average specular reflectance of at least 50% in a predetermined wavelength range. The light extraction pattern may be repeatedly imaged by the first and second reflective layers to produce three-dimensional stacked images of the light extraction pattern.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: September 21, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Tao Liu, Brian W. Ostlie, Brent A. Hedding, Charlie C. Ho, Yongshang Lu, Jay M. Jennen, David C. Mercord, Johnnie L. Williams
  • Patent number: 11125932
    Abstract: A light guide plate and a manufacturing method thereof, a backlight module, and a display device are provided. The light guide plate includes a light incident surface, a light reflection surface, and a light-emitting surface; the light reflection surface includes a first prism structure array, the first prism structure array includes first prisms arranged in sequence in a first direction, and the first direction is perpendicular to the light incident surface; the first prism structure array is configured to enable light emitted from the light incident surface to be emitted toward the light-emitting surface; and the light-emitting surface includes a second cylindrical structure array, the second cylindrical structure array includes second cylindrical structures arranged side by side in a second direction, the second direction is perpendicular to the first direction, and a first plane including the first direction and the second direction is perpendicular to the light incident surface.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: September 21, 2021
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Honghao Yu, Hao Zhou, Lili Jia, Donglei Li, Hui Liu, Ying Chen, Shanshan Liu
  • Patent number: 11126030
    Abstract: The present disclosure generally relates to display technologies. A liquid crystal display panel includes: a light guide layer having a first refractive index, a refractive layer on the light guide layer, a first polarizing layer on the refractive layer, a color filter layer on the first polarizing layer, a liquid crystal layer on the color filter layer, and an array substrate on the liquid crystal layer. The refractive layer includes a plurality of higher refractive index portions having a second refractive index and a plurality of lower refractive index portions having a third refractive index, the plurality of higher refractive index portions and the plurality of lower refractive index portions being arranged in an alternating manner. The liquid crystal display panel is configured to emit light substantially through the higher refractive index portions of the refractive layer.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: September 21, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaozhe Zhang, Kun Lu, Chao Zhang, Xing Zhou, Ling Bai, Qifei Chen, Liangliang Ren
  • Patent number: RE49296
    Abstract: In a liquid crystal display module, notches are disposed on limiting sections and opposite to flexible circuit boards disposed on a liquid crystal panel so that the flexible circuit boards protrude through the notches and are bent toward the connecting sections; and moreover first depressed sections configured to accommodate the flexible circuit boards may be disposed on the connecting sections and opposite to the notches; and second depressed sections depressed inward may be disposed on the folded edge and opposite to the first depressed sections so that the first depressed sections and the second depressed sections cooperate with each other.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: November 15, 2022
    Assignees: Hisense Visual Technology Co., Ltd., Hisense USA Corporation, Hisense International Co., Ltd.
    Inventor: Hao Liu