Edge Lit Type Light Guide Behind Liquid Crystal Patents (Class 349/65)
  • Patent number: 12287539
    Abstract: An electronic device includes: a non-collimated backlight module; a transparent backlight module disposed on the non-collimated backlight module, wherein the transparent backlight module includes a direct-lit backlight module or an edge-lit backlight module; and a display cell disposed on the transparent backlight module; wherein when in a narrow mode, the non-collimated backlight module is in an off-state, and the transparent backlight module is in an on-state, wherein when in a wide mode, the non-collimated backlight module is in an on-state.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: April 29, 2025
    Assignee: INNOLUX CORPORATION
    Inventor: Kazuto Jitsui
  • Patent number: 12241606
    Abstract: A primary optical element, a primary optical assembly, an optical assembly, a vehicle lamp lighting device and a vehicle. The primary optical element comprises a primary optical element main body comprising a light guiding portion and a fusion light-emitting portion which are provided from rear to front, a front end surface of the fusion light-emitting portion is provided as a light-emitting surface, and the light guiding portion comprises a plurality of light guiding columns, the thickness of the fusion light-emitting portion in the up-down direction greater than the thickness of the light guiding portion in the up-down direction, and the fusion light-emitting portion able to fuse light transmitted by the plurality of light guiding columns to the fusion light-emitting portion, and then emit the light by means of the light-emitting surface. The primary optical assembly, the optical assembly, the vehicle lamp lighting device, and the vehicle comprise the optical assembly.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: March 4, 2025
    Assignee: HASCO VISION TECHNOLOGY CO., LTD.
    Inventors: Weigang Gong, Zhiping Qiu, He Zhu, Wenhui Sang
  • Patent number: 12222597
    Abstract: An optical film is provided. The optical film includes a mat layer including a plurality of protrusions, a first base film disposed under the mat layer, a light blocking pattern layer disposed under the first base film and including a plurality of light absorption patterns arranged in a first direction, an adhesive layer disposed under the light blocking pattern layer, a second base film attached to the light blocking pattern layer using the adhesive layer, and a prism structure disposed under the second base film where the prism structure includes a plurality of prisms arranged along a second direction inclined at 80° to 100° with respect to the first direction.
    Type: Grant
    Filed: June 16, 2023
    Date of Patent: February 11, 2025
    Assignee: LMS Co., Ltd.
    Inventors: Moonho Ham, Janghee Cho, Jongmun Lee, Taegu Hwang, Wonhee Lee, Jinhwan Kim
  • Patent number: 12222602
    Abstract: An optical film according to various embodiments of the present invention may include a first sheet comprising a first base portion, a first pattern layer including a plurality of prisms and formed on a surface of the first base portion, and a second pattern layer including a plurality of pyramids and formed as intaglio on the other surface of the first base portion; and a second sheet including a second base portion; a third pattern layer including a plurality of protrusions with an adhesive property and formed as a matte pattern on a surface of the second base portion, and a fourth pattern layer including a plurality of pyramids and formed as intaglio on the other surface of the second base portion.
    Type: Grant
    Filed: April 1, 2024
    Date of Patent: February 11, 2025
    Assignee: LMS Co., Ltd.
    Inventors: Hyeonuk Park, Byeonghun Lee, DongKyu Lee
  • Patent number: 12216304
    Abstract: According to an embodiment, an illumination device includes a light guide having a first plane, a second plane opposed to the first plane and substantially parallel to the first plane, and a tilted plane opposed to the first plane and tilted to the first plane, the tilted plane and the second plane being arranged in a first direction, and a light emitting device including a first light emitting part, a second light emitting part, and a third light emitting part which are located directly below the tilted plane, arranged in the first direction, and configured to emit light having wavelengths different from each other.
    Type: Grant
    Filed: June 21, 2023
    Date of Patent: February 4, 2025
    Assignee: Japan Display Inc.
    Inventors: Shinichi Komura, Koichi Okuda, Ken Onoda, Hiroaki Kijima
  • Patent number: 12216357
    Abstract: In some examples, an apparatus may include a backlight unit (BLU) including an electronic integrated circuit layer, a photonic integrated circuit layer, a color conversion module, and a display interface layer. In some examples, a BLU may include at least one laser or may be configured to receive laser light from at least one external laser source. Laser light may be transmitted towards a portion of the display interface layer using the photonic integrated circuit. Color conversion modules may be used to convert the laser light into one or more desired colors. Example apparatus may be used in head-mounted devices such as augmented reality and/or virtual reality devices. Other devices, methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: September 11, 2023
    Date of Patent: February 4, 2025
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Zhimin Shi, Xi Wu, James Ronald Bonar, Yun Wang, Edward Buckley
  • Patent number: 12196386
    Abstract: A light guide plate guides light from a light source to form an image in a space, and includes a light introduction portion and a light emitting portion. Light from the light source is incident on the light introduction portion. The light emitting portion includes a curved emission surface that emits light from the light source incident from the light introduction portion, and is bent and connected to the light introduction portion.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: January 14, 2025
    Assignee: OMRON CORPORATION
    Inventors: Masayuki Shinohara, Norikazu Kitamura
  • Patent number: 12158602
    Abstract: A directional illumination apparatus comprises an array of light emitting diodes formed on a support substrate, a waveguide and a light turning optical component. An array of light input wells are arranged in the waveguide to receive light from the respective aligned array of light emitting diodes. An array of light deflecting wells are arranged in the waveguide to reflect guided light in the region around each light emitting diode. Extracted light from the waveguide is output by means of refraction and total internal reflection by a light turning optical component. A directional illumination output may be provided. A backlight for a high dynamic range display may achieve high efficiency and luminance. A privacy display with high security factor and high dynamic range may be achieved.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: December 3, 2024
    Assignee: RealD Spark, LLC
    Inventors: Michael G. Robinson, Jonathan Harrold, Graham J. Woodgate
  • Patent number: 12147071
    Abstract: An electronic device includes a housing that at least partially defines an exterior surface and an internal volume. The electronic device also includes a display assembly that is at least partially disposed in the internal volume. The display assembly includes a light guide including a transparent plate and a light source positioned at an end of the transparent plate. A light-blocking component is affixed to the housing and at least partially covers a portion of the transparent plate. A translucent portion extends from the light-blocking component and overlaps the transparent plate.
    Type: Grant
    Filed: January 12, 2024
    Date of Patent: November 19, 2024
    Assignee: APPLE INC.
    Inventors: Michael E. Leclerc, Chi Xu, Po-Wen Chiu
  • Patent number: 12137528
    Abstract: A display device for vehicle interiors includes a screen having an active front screen surface comprising a main area and a marginal area, and a decorative layer covering the marginal area and not covering the main area. The decorative layer is configured such that in a non-switched-on state of the screen in the marginal area, the marginal area is not visible through the decorative layer In a switched-on state of the marginal area, light emitted from the marginal area is visible through the decorative layer. Furthermore, a method of manufacturing such a display device is provided.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: November 5, 2024
    Assignee: Faurecia Innenraum Systeme GmbH
    Inventors: Guillaume Basquin, Christophe Coupe, Edouard Da Silva
  • Patent number: 12130462
    Abstract: A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body and an optical layer. The main body has a light-incident surface, a side surface and an optical surface. The light-incident surface and the side surface are respectively connected to the optical surface. The optical layer is correspondingly disposed on the side surface of the main body. In a reflectance characteristic of the optical layer, a total reflectance of the reflectance characteristic is composed of the diffuse reflectance and the parallel reflectance. The percentage value of the parallel reflectance to the total reflectance is less than 45 and larger than 25, including the end point.
    Type: Grant
    Filed: June 26, 2023
    Date of Patent: October 29, 2024
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: I-Wen Fang, Chia-Ying Chen, Yen-Chang Lee, Chun-Hsien Li
  • Patent number: 12072519
    Abstract: A multilayer optical film includes a plurality of polymeric layers arranged sequentially adjacent to each other. A difference in thickness between spaced apart first and second polymeric layers in the plurality of polymeric layers is less than about 10%. Each polymeric layer that is disposed between the first and second polymeric layers has a thickness less than about 400 nm. Each layer in a group of at least three polymeric layers in the plurality of polymeric layers that are disposed between the first and second polymeric layers has a thickness greater than an average thickness of the first and second polymeric layers by about 20% to about 500%. The group of at least three polymeric layers includes at least one pair of immediately adjacent polymeric layers.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: August 27, 2024
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Adam D. Haag, William B. Black, Robert M. Biegler, Matthew B. Johnson, Edward J. Kivel
  • Patent number: 12019322
    Abstract: A display device is provided and includes a liquid crystal display panel; and a backlight device opposed to the liquid crystal display panel via a polarizing plate; the backlight device including a frame comprising at least four bars; a first adhesive layer provided on one surface of the bars; a reflective sheet; a lightguide disposed on the reflective sheet in the frame; and a light source disposed in the frame and configured to emit light to the lightguide, wherein the frame includes a portion that is exposed from the liquid crystal display panel in a plan view, and a resin adhesive layer having a light-shielding property covers an external surface of the liquid crystal display panel and the portion of the frame.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: June 25, 2024
    Assignee: Japan Display Inc.
    Inventors: Tetsuro Ochi, Ken Sugiyama, Toshiyuki Tsubota, Kazunari Nishita
  • Patent number: 11996066
    Abstract: Alpha values from an image frame buffer are used to control one or more of a transparent display and an occlusion screen adjacent to the transparent display to render images with coloring perceptible to a person viewing the transparent display.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: May 28, 2024
    Assignee: Sony Interactive Entertainment Inc.
    Inventors: Yutaka Yokokawa, Jeffrey R. Stafford
  • Patent number: 11982904
    Abstract: A light conversion structure, backlight device and virtual reality display device are provided.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 14, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Liangliang Jin, Ruoyu Ma, Zezhou Yang, Haiwei Sun, Zhongbao Wu, Chuandong Liao
  • Patent number: 11971569
    Abstract: There is provided a light emitting device that can be used as a light guide plate and has an excellent antireflection function to extraneous light, and an optical body includes: a base material; a macro concave-convex structure that is formed on one surface of the base material and emits internally propagating light that is injected in an inside of the base material from a side surface of the base material, from another surface of the base material; and a micro concave-convex structure formed periodically to follow each of both surfaces of the base material and a surface of the macro concave-convex structure, and having an average period of concavity and convexity of less than or equal to a wavelength of visible light. The surface of the macro concave-convex structure has an inclined surface, and an arrangement of the micro concave-convex structure is a zigzag arrangement.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: April 30, 2024
    Assignee: DEXERIALS CORPORATION
    Inventors: Shunichi Kajiya, Kyoko Sakurai, Katsuhiro Doi, Kazuya Hayashibe, Naoki Hanashima, Naoto Kaneko
  • Patent number: 11947148
    Abstract: A transparent display panel and an electronic device are provided. The transparent display panel includes: a first substrate, a second substrate, and a liquid crystal layer therebetween, the second substrate having an edge extension portion located on a same side of the transparent display panel as a first light incident surface of the first substrate; a first light source assembly located on a side, where the first light incident surface is provided, of the first substrate; a first light guide bar located between the first light source assembly and the first light incident surface, the first light guide bar having a first light guide bar surface, a second light guide bar surface, and a first light guide bar slope surface therebetween, an inner angle formed between the first light guide bar slope surface and the second light guide bar surface being less than or equal to 90 degrees.
    Type: Grant
    Filed: April 25, 2021
    Date of Patent: April 2, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yidan Peng, Nanfang Jia, Long Wang
  • Patent number: 11934061
    Abstract: A performance of a display apparatus is improved. A display apparatus includes a glass plate, a display panel facing the glass plate, a frame housing a part of the glass plate and a part of the display panel, and a light source module housed in the frame. The glass plate has a side surface. The display panel includes a first substrate facing the glass plate, a second substrate facing the first substrate, and a liquid crystal layer located between the first substrate and the second substrate. The light source module is disposed at a position facing the side surface of the glass plate.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: March 19, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventor: Makoto Miyao
  • Patent number: 11910550
    Abstract: A display includes a frame body and an optical film. Each of the first side wall and the third side wall of the frame body has a first positioning structure. Two end portions of each of the second sidewall and the fourth sidewall are bent toward the accommodating space to form second positioning structures. The optical film includes first positioning pieces and second positioning pieces. The first positioning pieces are respectively at the first side and the third side of the optical film, and each of the first positioning structures passes through a corresponding one of the first positioning pieces. The second positioning pieces respectively extend along a direction parallel to the first side or the third side of the optical film, and each of the second positioning pieces corresponds to a corresponding one of the second positioning structures.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: February 20, 2024
    Assignee: AUO DISPLAY PLUS CORPORATION
    Inventor: Hsin-Yi Hsieh
  • Patent number: 11885997
    Abstract: A light guide for a virtual image device to guide and emit image light output from an image display element to display a virtual image. The light guide includes a light-guide member and an optical member. The light-guide member includes an incidence portion to receive the image light and an exit portion to emit the image light to an outside, and a reflective portion inclined relative to the incidence portion to guide the image light received by the incidence portion into the light guide. The light-guide member also includes an extraction portion including first planes each inclined relative to the exit portion and second planes each parallel with the exit portion, to guide the image light from each first plane to the exit portion and extract the image light. The optical member includes a parallel plane and an inclined portion.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: January 30, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shiori Ohsugi, Takashi Kubota, Takanobu Osaka, Naoki Nakamura
  • Patent number: 11841527
    Abstract: A backlight module and a display device are provided. The backlight module includes: a backplate including a bottom plate and at least one side plate disposed on the bottom plate; a light board including at least one light-emitting diode, wherein the light board is fixed onto one of the at least one side plate and disposed on one side of the bottom plate; and a reflective sheet disposed on the bottom plate and extending between the at least one light-emitting diode and the bottom plate.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: December 12, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Zheng Zhou
  • Patent number: 11808967
    Abstract: A light deflecting device including a flat, transparent light guide, and a transparent cover layer which is applied to the light guide at least partially in a flat manner. A microstructure for outcoupling light coupled into the light guide is formed between the light guide and the cover layer and the microstructure has a plurality of structural elements which are formed as substantially circular cylindrical elevations. A lighting device and the use of the light deflecting device or lighting device are also disclosed.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: November 7, 2023
    Assignee: temicon GmbH
    Inventors: Andreas Neyer, Helmut Frank Ottomar Müller
  • Patent number: 11774665
    Abstract: A light source module comprises: a printed circuit board; a light source disposed on the printed circuit board; a first light guide layer disposed on the printed circuit board, and accommodating the light source; and a second light guide layer disposed above the first light guide layer, wherein a material of the first light guide layer is different from that of the second light guide layer, and a refractive index of the first light guide layer is greater than that of the second light guide layer.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: October 3, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Eay Jin Lim, Seong Jin Kim
  • Patent number: 11768401
    Abstract: A display apparatus includes a liquid crystal panel, a substrate, and a plurality of light emitting diodes (LEDs) provided on one side of the substrate and configured to emit light towards the liquid crystal panel. Each of the plurality of LEDs includes a first reflection layer, a second reflection layer, and a light emitting layer provided between the first reflection layer and the second reflection layer. The second reflection layer is provided between the substrate and the light emitting layer. A first reflectivity of the first reflection layer for a first light entering at a first incident angle is different from a second reflectivity of the second reflection layer for the first light entering at the first incident angle.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: September 26, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungyeol Kim, Kyehoon Lee, Kyungsoo Park, Hyukjun Jang
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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