Edge Lit Type Light Guide Behind Liquid Crystal Patents (Class 349/65)
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 11119343
    Abstract: An optical device for providing illumination light includes an optical waveguide and a plurality of polarization selective elements. The plurality of polarization selective elements is disposed adjacent to the optical waveguide so that a respective polarization selective element receives light in a first direction, and redirects a first portion of the light in a second direction. A second portion, distinct from the first portion, of the light undergoes total internal reflection, thereby continuing to propagate inside the optical waveguide.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: September 14, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Ying Geng, Jacques Gollier, Babak Amirsolaimani
  • Patent number: 11112554
    Abstract: The present disclosure relates to the field of display technology, and provides a back light unit, a fabricating method thereof, and a display device in embodiments. The back light unit includes a composite layer. The composite layer includes a light guide layer and a first substrate opposite to each other, and a plurality of first microprisms and a plurality of second microprisms between the light guide layer and the first substrate. Specifically, the light guide layer includes a light exit surface facing the first substrate, and the plurality of first microprisms are on the light exit surface of the light guide layer. The plurality of second microprisms are on a surface of the first substrate facing the light guide layer. Moreover, the first microprisms are fixedly connected to the second microprisms.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: September 7, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shubai Zhang, Haiwei Sun, Ming Zhai, Yutao Hao, Pengfei Cheng
  • Patent number: 11099428
    Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit emitting light forward, a liquid crystal panel disposed in front of the backlight unit and having a front polarizing film, and a diffusion film disposed in front of the liquid crystal panel, wherein the diffusion film includes a first refraction layer having a lens portion projecting forward, a second refraction layer disposed in front of the first refraction layer, a retardation member disposed at a front end of the lens portion, and a film polarizing layer disposed in front of the retardation member.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Go Hyun Kim, Sang Hyun Sohn, Jong Hee Han
  • Patent number: 11092737
    Abstract: A backlight module and a display device are provided. The backlight module includes a backboard and a light source component; the backboard has a bearing surface; the light source component is located on the bearing surface; the backboard includes at least one fixing member located at an edge of the backboard, the fixing member extends along a first direction and is located on a side of the backboard away from the light source component; the first direction is a direction which is intersected with the bearing surface and from the light source component to the backboard.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: August 17, 2021
    Assignees: BEIJING BOE CHATANI ELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xiangwei Zhao
  • Patent number: 11086354
    Abstract: The present invention is disclosing an automated retractable information display device for vehicles. Display device may be configured to mount detachably at interior or exterior of vehicles. Display device may comprise a housing configured to receive information associated with a first user for viewing thereof from exterior of vehicle upon a request from a second user, a transceiver configured to receive an actuation command from a control element via a communication network, and an actuating element configured to retract in and extend out information automatically based on received actuation command.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: August 10, 2021
    Inventor: Roger E. Walker
  • Patent number: 11087936
    Abstract: The invention provides a light guide structure, adapted to be disposed under a baseplate of a keyboard module. The light guide structure includes: a light guide plate, a mask layer and a reflective layer. The light guide plate includes a first surface, a second surface opposite to the first surface, and a first opening running through the first and second surfaces. The mask layer is located between the baseplate and the light guide plate, and includes a second opening corresponding to the first opening. The reflective layer includes a first part and a second part connected to each other, wherein the first part is disposed on the second surface of the light guide plate, and the second part runs through the first opening and is disposed on a lower surface of the baseplate. The invention further provides a light-emitting keyboard device.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: August 10, 2021
    Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology Corporation
    Inventor: Yi-Wen Chen
  • Patent number: 11079521
    Abstract: There is provided an optical member that achieves a desired light distribution characteristic while having a simple configuration. The optical member includes a first transparent optical sheet and a second transparent optical sheet that are superimposed on each other in a first axial direction. The first transparent optical sheet includes a structure in which a first region and a second region are alternately disposed in a second axial direction. The second transparent optical sheet includes a structure in which a third region and a fourth region are alternately disposed in a third axial direction. An angle formed by the third axial direction with respect to the second axial direction is equal to or greater than 0° and less than 45°.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: August 3, 2021
    Assignee: Saturn Licensing LLC
    Inventors: Norimasa Furukawa, Hiroki Asakawa
  • Patent number: 11073694
    Abstract: A see-through image display system having a laser-beam-scanner has a very small eyebox when a laser beam is directly projected into eye. This invention provides a solution to increase the size of eyebox using a free-form-mirror to create a real image with high NA without exit-pupil-expander.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: July 27, 2021
    Assignees: NTT DOCOMO, Inc.
    Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuhiko Takahashi, Yuji Abrakawa, Keiichi Murakami
  • Patent number: 11073653
    Abstract: A backlight apparatus can include a lens to receive light and generate light with a collimated batwing configuration. The lens can include a receiving surface and an opposing transmission surface. The lens can be symmetric about a plane of symmetry. The transmission surface can include an angle of curvature that increases closer to the plane of symmetry.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: July 27, 2021
    Assignee: Lumileds LLC
    Inventors: Mehdi Aas, Arjen Gerben Van der Sijde, Erno Fancsali, Nicola Bettina Pfeffer
  • Patent number: 11067739
    Abstract: Provided are an edge-lit surface light source device and a liquid crystal display device, both of which are capable of two-dimensional local dimming without image contrast being reduced due to stray light. Even when light from LEDs that should be extracted by means of a light extraction pattern provided in a first section of a light guide plate is passed through the first section without being extracted, the light repeatedly strikes on a light absorbing layer formed in a second section, whereby much of the light is absorbed in the second section. Accordingly, little light from the LEDs is extracted from a third section, from which light from LEDs should originally be extracted, with the result that image contrast can be prevented from being reduced due to stray light.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: July 20, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hirotoshi Yasunaga, Hisashi Watanabe
  • Patent number: 11048110
    Abstract: A curved liquid crystal display device includes: a curved liquid crystal panel including a first flat section and a second flat section in a longitudinal direction and a curved section between the first and second flat sections; a curved backlight unit which is disposed under the curved liquid crystal panel and includes a glass light guide plate having first and second flat sections and a curved section; a curved guide panel which surrounds edges of the curved liquid crystal panel and the curved backlight unit and includes first and second flat sections and a curved section; and a curved glass cover bottom which is disposed at a back surface of the curved backlight unit and includes first and second flat sections and a curved section, wherein the curved guide panel and the curved glass cover bottom are outermost structures of the curved liquid crystal display device.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: June 29, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Seok Lee, Min-Jin Lee, Ju-Sang Rhim
  • Patent number: 11048467
    Abstract: An electronic device including a housing including a first plate facing a first direction, a second plate facing opposite to the first direction, and a side surface member surrounding a portion of a space between the first and second plates; a display panel disposed in a second direction of the first plate, and visually disposed through at least a portion of the first plate; a speaker disposed on one surface of the display panel facing in the second direction; a bracket including a first surface facing in the first direction and a second surface facing in the second direction, and disposed to support the display panel on the first surface; and a bonding configured to attach the display panel and the bracket. The bonding layer includes a gap formed by deleting a portion of the bonding layer to receive the speaker, and formed between the display panel and the bracket.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: June 29, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wontae Jeong, Eungkyu Park, Dongyeop Lee, Jaehwan Lee, Hyounggil Choi
  • Patent number: 11022853
    Abstract: The present invention relates to a display panel including on a viewing surface side thereof a thin film transistor substrate. The thin film transistor substrate includes a multilayer film in a region in a plan view including at least one electrode of thin film transistor electrodes including a gate electrode, a source electrode, and a drain electrode. The multilayer film includes a stack including, in the order from the viewing surface side, a first metal layer having a thickness of 40 nm or smaller, a first transparent insulating layer having a thickness of 10 nm or greater and 155 nm or smaller, and a second metal layer having a greater thickness than the first metal layer. The multilayer film includes a layer formed from a metal having a reflectance at a thickness of 200 nm of 50% or lower.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: June 1, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Akira Hirai, Kiyoshi Minoura, Hiromi Matsumoto, Akira Sakai, Yasuhiro Haseba
  • Patent number: 11022743
    Abstract: The present disclosure discloses a backlight source and a display device. The backlight source can include: a light guide plate and a light bar. The light guide plate includes a flat panel structure and a strip structure having an inclined surface, the strip structure being disposed at an edge of one side of the flat panel structure, the inclined surface being connected to the edge of the flat panel structure and inclining toward the flat panel structure, and the angle between the inclined surface and a side of the strip structure away from the flat panel structure and parallel to the flat panel structure being an obtuse angle; the light bar and the strip structure are disposed on the same side of the flat panel structure, a light exiting surface of the light bar facing a side of the strip structure opposite to the inclined surface in a direction parallel to the flat panel structure. The backlight source of the present disclosure is used in a display device including a display panel.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: June 1, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Huiqiang Ye
  • Patent number: 11017742
    Abstract: A portable information handling system presents visual images at first and second displays integrated in first and second rotationally-coupled housing portions. When the housing portions rotate to a clamshell configuration, a refractive layer in a “DO” display aligns light illuminated from the display off an orthogonal angle and towards a user while a “SEE” display aligns light illuminated from the display along an orthogonal angle.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: May 25, 2021
    Assignee: Dell Products L.P.
    Inventors: Gerald R. Pelissier, Jace W. Files, Chiu-Jung Tsen, Yung-Chun Liu, John T. Morrison
  • Patent number: 11003208
    Abstract: An electronic device such as a laptop computer or other device may have a housing. A display may be coupled to the housing. The display may have a pixel array configured to display an image. Backlight illumination for the pixel array may be provide by a backlight unit. The backlight unit may have a light guide layer. A light source may provide light to an edge of the light guide layer. The light guide layer may scatter the light outwardly to serve as the backlight illumination for the pixel array. The backlight unit may have optical films interposed between the light guide layer and the pixel array. The optical films may include flexible polymer layers such as diffuser layers and prism films. The optical films may each have a bent alignment portion that bends back on itself while wrapping around an edge of the light guide layer.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: May 11, 2021
    Assignee: Apple Inc.
    Inventors: Keith J. Hendren, Adam T. Garelli, Bryan W. Posner, Dinesh C. Mathew, Mengyang Liang, Eric Benson, Victor Yin, Jun Qi