Electro-optic Patents (Class 359/245)
  • Patent number: 11513414
    Abstract: An electro-optic display having a viewing surface through which a user views the display, a bistable, electrophoretic medium, and at least one electrode arranged to apply an electric field to the electrophoretic medium, the display further comprising at least 10 micromoles per square meter of the viewing surface of at least one compound having an oxidation potential more negative that about 150 mV with respect to a standard hydrogen electrode, as measured at pH 8, where the compound is a sulfite salt or a salt of titanium (III), vanadium (II), iron (II), cobalt (II) or copper (I), a hydroquinone, a catechol, a dihydropyridine or a metallocene.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: November 29, 2022
    Assignee: E Ink Corporation
    Inventors: Stephen J. Telfer, Peter Carsten Bailey Widger, Ana L. Lattes, Dan John Lauber
  • Patent number: 11435449
    Abstract: An electro-optical device includes a radiation source, which is configured to emit multiple beams of light. A scanner includes an array of cells. Each cell is positioned to receive one or more of the beams of light and includes transparent entrance and exit faces, at least one of the faces comprising a flexible membrane. A volume of a transparent fluid is contained between the entrance and exit faces, so that the one or more of the beams enter the volume through the entrance face and exit the volume through the exit face. At least one actuator is coupled to the flexible membrane, and configured, responsively to an applied electrical signal, to apply an asymmetrical deformation to the flexible membrane, thereby deflecting the beams by refraction in the transparent fluid. A controller is configured to vary the electrical signal so as to scan the beams of light over respective angular ranges.
    Type: Grant
    Filed: August 11, 2019
    Date of Patent: September 6, 2022
    Assignee: APPLE INC.
    Inventor: Arnaud Laflaquière
  • Patent number: 11425847
    Abstract: An electro-optic modulator includes a base plate, an optical waveguide, at least one set of modulation electrodes, and an electromagnetic shielding structure. The electromagnetic shielding structure includes a top shielding member covering the set of modulation electrodes from above, and a side shielding member disposed on two sides of the set of modulation electrodes. At least a portion of the side shielding member extends into the base plate to isolate the set of modulation electrodes.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: August 23, 2022
    Assignee: Innolight Technology (Suzhou) Ltd.
    Inventors: Dongdong Yan, Xianyao Li
  • Patent number: 11415857
    Abstract: An electrochromic film, which is a reflective electrochromic film, which includes an electrode layer, a light absorbing layer and an electrochromic layer. The film can improve an electrochromism rate and realize various colors or esthetic senses.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: August 16, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Yong Chan Kim, Song Ho Jang, Ki Hwan Kim, Pil Sung Jo
  • Patent number: 11379050
    Abstract: The invention relates to a peripheral (1) including at least one transparent key (2), actuable under the effect of pressure and engaged in an opening (11) arranged on a first face (10a) of a case (10), the peripheral (1) including a system (13) for controlling and detecting a pressure exerted on the key (2), and at least one screen (4) allowing symbols (3) to be displayed through each key (2) via respectively a display path (5), the control and detection system (13) including a flexible membrane (14) ensuring an actuating force and a pressure feedback effect and including at least one orifice (17), each orifice delimiting a display path (5) for a key (2), and each orifice (17) being delimited by a border (17a) cooperating with a key (2).
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: July 5, 2022
    Assignee: GROUPE LDLC
    Inventors: Laurent Faivre, Yuria Puggioni
  • Patent number: 11364709
    Abstract: A functional element having electrically controllable optical properties, includes a stack sequence of at least a first carrier film, an active layer, and a second carrier film, wherein at least one exit surface of the active layer on at least one lateral face of the stack sequence of the functional element is sealed at least in sections with a barrier material.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: June 21, 2022
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Marcel Klein, Alicia Dröge
  • Patent number: 11345218
    Abstract: A right side windshield is capable of changing a visible light transmittance of an upper part including an upper end, and a left side windshield is also capable of changing a visible light transmittance of an upper part. A light control switch is disposed on an instrument panel around a driver seat of a vehicle. The light control switch is operated to reduce the visible light transmittance of the upper part. The reduction in the transmittance can be performed simultaneously with the reduction in the visible light transmittance of an upper part of a front windshield.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: May 31, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryusuke Tanaka
  • Patent number: 11320699
    Abstract: The present disclosure relates to the field of display technology, and discloses a display panel and a manufacturing method. The display panel includes a first substrate, a second substrate, a liquid crystal, and a backlight module, wherein the first substrate includes a display area and a bonding area adjacent to the display area, and the display area of the first substrate on one side close to the second substrate is provided with thin film transistors arranged in an array mode; the second substrate is disposed opposite to the display area of the first substrate; the liquid crystal is encapsulated between the first substrate and the second substrate; the area of the second substrate is smaller than that of the first substrate, and the second substrate is between the first substrate and the backlight module.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: May 3, 2022
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yizhe Li, Shenkang Wu, Qi Jing, Xingpan Sun
  • Patent number: 11314123
    Abstract: A composite pane having electrically controllable optical properties, includes an outer pane, a first intermediate layer, a second intermediate layer, and an inner pane, a functional element having electrically controllable optical properties, which is arranged between the first intermediate layer and the second intermediate layer, and a thermoplastic frame layer, which surrounds the functional element in the manner of a frame, wherein the outer pane and the inner pane are joined to one another via the first intermediate layer, the second intermediate layer, and the thermoplastic frame layer, and an optical waveguide is arranged at least partially between the outer pane and the inner pane.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: April 26, 2022
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Valentin Schulz, Marcel Klein, Sebastian Schurse
  • Patent number: 11307351
    Abstract: Provided are an optical waveform shaping apparatus and an optical waveform shaping method. According to an embodiment, the optical waveform shaping apparatus includes a multiplexer/demultiplexer (D/MUX) unit demultiplexing an optical signal in which optical signals of a plurality of wavelengths are multiplexed, a micro lens system refracting the demultiplexed optical signal into a collimated beam of light, and a wavelength level controller unit shaping a waveform of the optical signal. The wavelength level controller unit includes a 2D LCoS for adjusting and reflecting an amplitude or a phase value of the demultiplexed optical signal to have a distribution that is desired for each cell, and a controller for controlling the distribution.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: April 19, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sang-Pil Han, Minhyup Song, Sungil Kim
  • Patent number: 11300845
    Abstract: Electrochromic devices with reflective structure and related manufacturing methods are provided. One of the electrochromic devices includes a bottom electrode layer, an electrochromic layer on the bottom electrode layer, an electrolyte layer on the electrochromic layer, a charge storage layer on the electrolyte layer, and a top electrode on the charge storage layer. The transmittance of the electrochromic device changes in response to a voltage applied between the bottom electrode layer and the top electrode layer. One of the bottom and the top electrode layers is a reflective conductive layer, while the other being a transparent conductive layer. This electrochromic device has a simplified structure due to the removal of a separated reflective film, which also results in simplified manufacturing process.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: April 12, 2022
    Assignee: Furcifer Inc.
    Inventors: Jian Wang, Zhao Chen, Yan Zhou
  • Patent number: 11287701
    Abstract: A switchable panel is described that includes exterior layers, lamination layers extending between the exterior layers to outer edges of the switchable panel, a switchable component extending between the lamination layers and having a switchable component height, and a tension control component that prohibits a change of greater than ten percent to the switchable component height when tension is applied to the switchable panel.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: March 29, 2022
    Assignee: Apple Inc.
    Inventors: Peter F. Masschelein, Yuan Chen, Derek C. Scott
  • Patent number: 11280954
    Abstract: A display device includes a viewing angle control panel and a backlight module. The backlight module is arranged below the viewing angle control panel, and includes a light source and an optical adjustment layer. The optical adjustment layer includes a first surface, a second surface and a plurality of openings. The second surface is arranged in opposite to the first surface and in proximity to the light source. The plurality of openings pass through the optical adjustment layer.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: March 22, 2022
    Assignee: InnoLux Corporation
    Inventors: I-Kai Pan, Wei-Tsung Hsu, Chun-Fang Chen, Su-Chen Yen
  • Patent number: 11281032
    Abstract: A composite substrate for an electro-optic element includes: an electro-optic crystal substrate having an electro-optic effect; a support substrate bonded to the electro-optic crystal substrate at least via an amorphous layer; and a low-refractive-index layer located between the electro-optic crystal substrate and the amorphous layer and having a lower refractive index than the electro-optical crystal substrate. The amorphous layer is constituted of one or more elements that constitute a layer or a substrate contacting the amorphous layer from one side and one or more elements that constitute a layer or a substrate contacting the amorphous layer from another side.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: March 22, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Tomoyoshi Tai, Jungo Kondo
  • Patent number: 11248171
    Abstract: The invention relates to a polymerisable LC medium with flat optical dispersion, a polymer film with flat optical dispersion obtainable from such a medium, and the use of the polymerisable LC medium and polymer film in optical, electro optical, electronic, semiconducting or luminescent components or devices.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: February 15, 2022
    Assignee: Merck Patent GmbH
    Inventors: Eduardo Beltran Gracia, Iain Gardiner, Rebecca Proctor, Stephen Mulcahy
  • Patent number: 11226538
    Abstract: An optical parametric oscillator (OPO) including a thin film waveguide including a material having a second order nonlinear susceptibility generating an electromagnetic wave in response to pump electromagnetic wave inputted into the thin film waveguide. The electromagnetic wave has a first wavelength or first set of wavelengths longer than a second wavelength or second set of wavelengths of the pump electromagnetic wave. The thin film waveguide has a thickness on the order of the first wavelength or the first set of wavelengths in the thin film waveguide so as to guide the output electromagnetic wave along the thin film waveguide.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: January 18, 2022
    Assignee: California Institute of Technology
    Inventors: Alireza Marandi, Luis Ledezma, Yinglun Xu, Ryan M. Briggs
  • Patent number: 11205691
    Abstract: A display panel and a display device are provided, and the display panel includes a substrate and a pixel layer disposed on the substrate. The pixel layer includes a plurality of pixel units arranged in an array. The display panel includes a main light-transmitting region surrounded by the plurality of pixel units, and an orthographic projection of the main light-transmitting region on the substrate is not overlapped with orthographic projections of the plurality of pixel units on the substrate, so that external light is allowed to pass through the main light-transmitting region of the display panel, and then is received by an image acquisition device disposed on a side of the display panel.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: December 21, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanliu Sun, Ming Zhu, Ge Shi, Haijun Niu, Yuyao Wang, Shiyu Zhang, Song Yang, Zheng Fang, Jiahui Han, Yujie Liu, Hao Zhang
  • Patent number: 11201675
    Abstract: Methods and systems for a bi-directional receiver for standard single-mode fiber based on grating couplers may include, in an integrated circuit, a multi-wavelength grating coupler, and first and second optical sources coupled to the integrated circuit: receiving first and second source optical signals at in the integrated circuit using the first and second optical sources, where the second wavelength is different from the first wavelength, receiving a first optical data signal at the first wavelength from an optical fiber coupled to the multi-wavelength grating coupler, and receiving a second optical data signal at the second wavelength from the optical fiber. Third and fourth optical data signals at the first and second wavelengths may be communicated out of the optoelectronic transceiver via the multi-wavelength grating coupler.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 14, 2021
    Assignee: Luxtera LLC
    Inventors: Peter DeDobbelaere, Christopher Bergey, Attila Mekis
  • Patent number: 11175186
    Abstract: One embodiment of the present invention provides an optical imaging apparatus using a metamaterial including a metamaterial array sensor which includes a plurality of unit cells made of a metamaterial and is positioned adjacent to an observation object, an imaging beam providing unit which provides an imaging beam toward the metamaterial array sensor, a control beam providing unit which controls a control beam provided to the unit cell to block the imaging beam incident on the unit cell, and an imaging beam measuring unit which measures a unit cell imaging beam transmission amount passing through the unit cell by measuring an imaging beam transmission amount of the metamaterial array sensor when the imaging beam passes through the unit cell and an imaging beam transmission amount of the metamaterial array sensor when the control beam is focused on the unit cell to block the imaging beam incident on the unit cell.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: November 16, 2021
    Assignees: Korea Institute of Science and Technology, Center for Advanced Meta-Materials
    Inventors: Minah Seo, Sang-Hun Lee, Chulki Kim, Jae Hun Kim, Taikjin Lee, Deok Ha Woo
  • Patent number: 11159710
    Abstract: A lowpass filter control apparatus of the present disclosure includes a lowpass filter controller that causes lowpass characteristics of a variable lowpass filter disposed in an optical path of incoming light into an imaging element including phase-difference pixels and normal pixels to be different for an exposure period of the normal pixels and an exposure period of the phase-difference pixels.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: October 26, 2021
    Assignee: SONY CORPORATION
    Inventor: Norihiko Akamatsu
  • Patent number: 11150487
    Abstract: A stereoscopic display device has a barrier panel. The barrier panel of the stereoscopic display device may include sequentially stacked first channel electrodes, second channel electrodes, and third channel electrodes. Each of the third channel electrodes may be disposed between the second channel electrodes. A distance between the third channel electrodes may be the same as a horizontal width of each third channel electrode. Each of the first channel electrodes may include a first region overlapping with an end portion of the second channel electrode, and a second region overlapping with an end portion of the third channel electrode facing the end portion of the second channel electrodes overlapping with the first region of adjacent first channel electrode. Thus, in the stereoscopic display device, the number of stacked layers of the channel electrodes may be minimized, a proper viewing range for a stereoscopic image may be smoothly moved.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: October 19, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: You-Yong Jin, Wook Jeon, Ju-Hoon Jang, Dong-Yeon Kim, Woon-Chan Moon
  • Patent number: 11146337
    Abstract: A feedback proportional control repeats the following processing of starting control of an optical modulator by a control signal that corresponds to a reference value set in the preliminary search or in the previous cycle, calculating a new reference value based on an error signal obtained from the optical modulator, and controlling the optical modulator by the control signal that corresponds to the new reference value, thereby acquiring the control signal in which the error signal is minimized as an optimal control signal, setting the acquired control signal as a signal for controlling the optical modulator, and storing the optimal control signal as the reference value to be used at a time of starting the feedback proportional control in the next cycle.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: October 12, 2021
    Assignee: NEC CORPORATION
    Inventor: Shingo Kuboki
  • Patent number: 11139351
    Abstract: An organic light emitting diode display comprises a substrate comprising a major surface; first, second, third and fourth electrodes positioned over the substrate; a pixel defining layer positioned over the plurality of electrodes and comprising first, second, third and fourth openings; and a spacer positioned over the pixel defining layer. The first, second, third and fourth openings overlap the first, second, third and fourth electrodes, respectively, when viewed in a viewing direction perpendicular to the major surface. The first, second, third and fourth openings comprise first, second, third and fourth corners, respectively, wherein the first, second, third and fourth corners neighbor one another when viewed in the viewing direction. When viewed in the viewing direction, the spacer comprises at least a portion placed within an imaginary polygon defined by the first, second, third and fourth corners.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: October 5, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Do-Hoon Kim
  • Patent number: 11126057
    Abstract: A method of controlling tint of a tintable window to account for occupant comfort in a room of a building. The tintable window is between the interior and exterior of the building. The method predicts a tint level for the tintable window at a future time based on a penetration depth of direct sunlight through the tintable window into the room at the future time and space type in the room. The method also provides instructions over a network to transition tint of the tintable window to the tint level.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: September 21, 2021
    Assignee: View, Inc.
    Inventors: Stephen C. Brown, Deepika Khowal, Namrata Vora, Santosh V. Philip
  • Patent number: 11126006
    Abstract: An optical component for transforming an input light beam having a Gaussian irradiance distribution into an output light sheet is provided. The optical component includes a first reflective surface extending around the central optical axis of the optical component and across an input light path of the input light beam, and reflects input light rays into transitional light rays defining a transitional light cone. A second reflective surface extends around the central optical axis and across a light path of the transitional light cone, reflecting the transitional light rays outwardly into output light rays defining the output light sheet. The first and second reflective surfaces are configured to distribute optical power within the output light sheet according to a Gaussian irradiance distribution transversally to the output light sheet. The output light sheet may be planar or conical.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: September 21, 2021
    Assignee: Institut National D'Optique
    Inventor: Michel Doucet
  • Patent number: 11107972
    Abstract: An optical element includes a nanovoided polymer layer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Compression or expansion of the nanovoided polymer layer, for instance, can be used to reversibly control the size and shape of the nanovoids within the polymer layer and hence tune its refractive index over a range of values, e.g., during operation of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 31, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Kenneth Diest, Andrew John Ouderkirk, Robin Sharma, Tanya Malhotra, Barry David Silverstein, Christopher Yuan Ting Liao, Erik Shipton, Gregory Olegovic Andreev
  • Patent number: 11106061
    Abstract: Methods and systems for a low-voltage integrated silicon high-speed modulator may include an optical modulator comprising first and second optical waveguides and two optical phase shifters, where each of the two optical phase shifters may comprise a p-n junction with a horizontal section and a vertical section and an optical signal is communicated to the first optical waveguide. A portion of the optical signal may then be coupled to the second optical waveguide. A phase of at least one optical signal in the waveguides may be modulated utilizing the optical phase shifters. A portion of the phase modulated optical signals may be coupled between the two waveguides, thereby generating two output signals from the modulator. A modulating signal may be applied to the phase shifters which may include a reverse bias.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: August 31, 2021
    Assignee: Luxtera LLC
    Inventors: Ali Ayazi, Kam-Yan Hon, Gianlorenzo Masini
  • Patent number: 11101256
    Abstract: An optoelectronic device. The optoelectronic device operable to provide a PAM-N modulated output, the device comprising: M optical modulators, M being an integer greater than 1, the M optical modulators being arranged in a cascade, the device being configured to operate in N distinct transmittance states, as a PAM-N modulator, wherein, in each transmittance state of the N distinct transmittance states, each of the M optical modulators has applied to it a respective control voltage equal to one of: a first voltage or a second voltage. One or more of the modulators may include a substrate; a crystalline cladding layer, on top of the substrate; and an optically active region, above the crystalline cladding layer. The crystalline cladding layer may have a refractive index which is less than a refractive index of the optically active region.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: August 24, 2021
    Assignee: Rockley Photonics Limited
    Inventors: Guomin Yu, Amit Singh Nagra, Damiana Lerose, Hooman Abediasl, Pradeep Srinivasan, Joyce Kai See Poon, Zheng Yong, Haydn Frederick Jones
  • Patent number: 11086048
    Abstract: An optical device is described. At least a portion of the optical device includes lithium niobate and is fabricated utilizing ultraviolet lithography. In some aspects the at least the portion of the optical device is fabricated using deep ultraviolet lithography. In some aspects, the short range root mean square surface roughness of a sidewall of the at least the portion of the optical device is less than ten nanometers. In some aspects, the at least the portion of the optical device has a loss of not more than 2 dB/cm.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: August 10, 2021
    Assignee: HyperLight Corporation
    Inventors: Mian Zhang, Kevin Luke
  • Patent number: 11079652
    Abstract: The present disclosure is directed to systems and methods for omniresonant broadband coherent perfect absorption of incoherent light over large bandwidths. The apparatus and methods that enable 100% effective optical absorption in a structure, irrespective of the material from which it is constructed, over a large, continuous bandwidth (omniresonance) in ultrathin devices. Specifically, we demonstrate achromatic optical absorption (omniresonance) in a planar Fabry-Pérot micro-cavity via angularly multiplexed phase-matching. By assigning each wavelength to an appropriate angle of incidence, the micro-cavity is rendered absorbing with continuous spectral range. For example, the linewidth of a single-order 0.7 nm wide resonance is de-slanted in spectral-angular space to become a 70 nm wide achromatic resonance spanning multiple cavity free spectral ranges. The embodied invention can have important applications in, e.g.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: August 3, 2021
    Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Ali Kazemi Jahromi, Massimo L. Villinger, Ahmed El Halawany, Soroush Shabahang, Hasan Esat Kondakci
  • Patent number: 11073706
    Abstract: A transmitter includes an optical modulator, a drive unit, a deviation identification signal generation unit, and a bias control unit. The deviation identification signal generation unit generates a signal value in accordance with a deviation of a bias voltage of the optical modulator by amplifying a signal value of a dither signal extracted from a modulated signal output from the optical modulator by a factor set for each of a plurality of modulation schemes so as to generate a uniform signal value. The bias control unit generates a bias value at which a center of a variation range, which is a range from a maximum value to a minimum value of the drive signal, corresponds to transmission characteristics of the optical modulator according to one predetermined adjustment method by using the signal value generated by the deviation identification signal generation unit.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: July 27, 2021
    Assignee: NEC CORPORATION
    Inventor: Tadashi Koga
  • Patent number: 11067839
    Abstract: Described herein are methods, systems, and apparatuses to utilize an electro-optic modulator including one or more heating elements. The modulator can utilize one or more heating elements to control an absorption or phase shift of the modulated optical signal. At least the active region of the modulator and the one or more heating elements of the modulator are included in a thermal isolation region comprising a low thermal conductivity to thermally isolate the active region and the one or more heating elements from a substrate of the PIC.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: July 20, 2021
    Assignee: Aurrion, Inc.
    Inventors: Robert Silvio Guzzon, Erik Norberg, Jonathan Edgar Roth
  • Patent number: 11060916
    Abstract: An adjustable hyperspectral detection chip enhanced by a multi-resonance plasmonic mechanism. The detection chip consists of an array of metal nanonail resonator detection units. Each detection unit (1) comprises: a bottom electrode (2), a semiconductor material layer (3), a spacer layer (4), a nanonail array (5), a control material layer (6), a top electrode (7), a peripheral control signal (8), and a driving circuit (9). The positional relationship from top to bottom is the top electrode (7), the control material layer (6), the nanonail array (5), the spacer layer (4), the semiconductor material layer (3), and the bottom electrode (2). The nanonail array (5) is loaded inside the control material layer (6), and the peripheral control signal (8) and the driving circuit (9) are connected to both sides of the control material layer (6).
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: July 13, 2021
    Assignee: Southeast University
    Inventors: Tong Zhang, Dan Su, Meng Xiong, Feng Shan, Xiaoyang Zhang
  • Patent number: 11038140
    Abstract: There is provided a display device capable of decreasing a drive voltage. A display device includes: a first electrode provided for each of a plurality of light emitting elements arranged on a flat surface; at least two or more kinds of inorganic insulating layers which separate each of the light emitting elements and have different concentrations of hydroxy groups on surfaces of the layers; an organic light emitting layer provided on the first electrode and the two or more kinds of inorganic insulating layers; and a second electrode provided on the organic light emitting layer.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: June 15, 2021
    Assignee: SONY CORPORATION
    Inventor: Kazuichiro Itonaga
  • Patent number: 11029562
    Abstract: A liquid crystal display device comprises a liquid crystal panel and a backlight unit under the liquid crystal panel and including a circuit board; a plurality of LED packages mounted on the circuit board; an encapsulation member over the circuit board and covering the plurality of LED packages; and a multi-pattern sheet over the encapsulation member and including a glass complex body containing a phosphor and a plurality of diffusion patterns on an upper surface of the glass complex body, wherein the plurality of diffusion patterns include at least one first pattern corresponding to an LED package and at least one second pattern corresponding to a portion between adjacent LED packages.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: June 8, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Rok-Hee Lee, Yong-Seok Kwak, Il-Soo Kim
  • Patent number: 11022823
    Abstract: switchable optical filter that is based on carrier injection induced semiconductor to metal phase transition (SMT) of vanadium oxide-based (e.g., VO2) thin films may reversibly change from optically transparent to opaque while undergoing such phase transition. Electrical carrier injection may be established by an electric field or by photoexcitation. The SMT may also be induced by a combination of applying an electric field and optical flux. Such a switchable optical filter, when inserted in the optical path of an optical radiation sensor, may be used to control and/or limit high power optical beams, such as a laser beam impinging on one or more sensor elements. Since the SMT may be configured to occur at ultrafast time scales (e.g., approximately 100 femtoseconds), it may also act as a beam shutter and/or as a fast optical beam modulator.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 1, 2021
    Assignee: University of North Texas
    Inventor: Athanasios J. Syllaios
  • Patent number: 10983370
    Abstract: An optical phase shifter is described, which includes an optical waveguide which is realized in a substrate and has an optical conduction surface within the substrate, the optical conduction surface including at least a first region having a first doping and at least two second regions having a second doping that differs from the first doping. The first region is situated between the two second regions.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 20, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Jan Niklas Caspers, Mohamed Ashour
  • Patent number: 10983373
    Abstract: A display device comprises a display panel including a main display region and a periphery region outside the main display region; and a panel driver connected with the display panel in the periphery region of the display panel, wherein the display panel includes an upper substrate and a lower substrate formed under a lower surface of the upper substrate, and the lower substrate is formed to expose a pad region provided on the lower surface of the upper substrate, and the panel driver is connected to the pad region provided on the lower surface of the upper substrate.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 20, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: JooHong Lee, SeoungJin Park, Moohyoung Song, SangRyeon Park, TaeYoung Jung
  • Patent number: 10983255
    Abstract: Mechanisms for customizing a refractive index of an optical component are disclosed. In one example, sub-wavelength openings are formed in a top layer of anti-reflective (AR) material of an optical component to tailor transmission characteristics of the AR material over a range of angles of incidence and a range of wavelengths. In another example, sub-wavelength openings are formed at different filling fractions in the surface of the optical component.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 20, 2021
    Assignees: Lockheed Martin Corporation, The Penn State Research Foundation
    Inventors: Clara R. Baleine, Corey L. Bungay, Theresa S. Mayer, Andrew Swisher, Jeffrey L. Ruckman, Stephen R. Tuenge
  • Patent number: 10962812
    Abstract: An electro-optic modulator includes a doped structure disposed on a top silicon layer of a substrate. The doped structure includes an optical waveguide, and a first P-type doped region and a first N-type doped region disposed respectively on two sides of the optical waveguide. The first P-type doped region is connected to the optical waveguide by means of a plurality of P-type doped link arms, and the first N-type doped region is connected to the optical waveguide by means of a plurality of N-type doped link arms. End portions of the plurality of P-type doped link arms and end portions of the plurality of N-type doped link arms are alternately arranged along a direction of light propagation to form PN junction depletion layers. The PN junction depletion layers are periodically arranged along the direction of light propagation to form the optical waveguide.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 30, 2021
    Assignee: InnoLight Technology (Suzhou) Ltd.
    Inventors: Mengxi Ji, Xianyao Li, Yue Xiao
  • Patent number: 10962712
    Abstract: An optical array waveguide grating-type multiplexer and demultiplexer according to an embodiment of the present invention comprise: a first substrate, a plurality of first waveguides disposed on the first substrate to be superposed in the vertical direction, which is the thickness direction of the first substrate; a 1-1st cladding layer disposed between the first substrate and a 1-1st waveguide, which is nearest to the first substrate among the plurality of first waveguides; a 1-2nd cladding layer disposed between the plurality of first waveguides; and a 1-3rd cladding layer disposed on a 1-2nd waveguide, which is furthest from the first substrate among the plurality of first waveguides.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: March 30, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Lee Im Kang, Chang Hyuck Lee
  • Patent number: 10955685
    Abstract: Disclosed is volumetric display arrangement for representing content of an image at different focal distances in a view of real-world environment. The volumetric display arrangement includes at least one image projection unit operable to project multiple depth planes of the image, at least one electro-optical unit comprising two or more optical diffuser elements arranged parallel to each other, the at least one electro-optical unit being positioned to receive the projected multiple depth planes of the image thereon and configured to independently display one of the projected multiple depth planes of the image at one of the two or more optical diffuser elements at a given instant of time, and an optical combiner positioned with respect to the at least one electro-optical unit to combine the view of real-world environment with the independently displayed multiple depth planes of the image in the at least one electro-optical unit.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: March 23, 2021
    Assignee: Lightspace Technologies, SIA
    Inventors: Ilmārs Osmanis, Robers Zabels, Uġis Gertners, Mārtiņ{hacek over (s)} Narels, Kri{hacek over (s)}s Osmanis, Rendijs Smukulis, Armands {hacek over (S)}maukstelis
  • Patent number: 10958343
    Abstract: In some embodiments, an apparatus includes an optical transmitter module that can be electrically coupled to an electrical serializer/deserializer and a controller. The optical transmitter module can include an electrical detector that can receive an in-band signal. The electrical detector can send to the controller a first power error signal and a second power error signal based on the in-band signal. The controller can send a correction control signal to the electrical serializer/deserializer based on the first power error signal and the second power error signal such that the electrical serializer/deserializer sends a pre-emphasized signal to the optical transmitter module based on the correction control signal. In such embodiments, the first power error signal, the second power signal and the correction control signal are out-of-band signals.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: March 23, 2021
    Assignee: Juniper Networks, Inc.
    Inventors: Theodore J. Schmidt, Bo Zhang, Murat Arabaci, Roberto Marcoccia, Christian Malouin, Steven William Keck
  • Patent number: 10942377
    Abstract: A driver circuit for a Mach-Zehnder modulator is provided that includes a first driver having an input to receive one of an input data or input data complement, and an output to be coupled to a first application voltage node associated with a first arm of a Mach-Zehnder modulator. The driver circuit includes a second driver having an input to receive the other of the input data complement or input data, and an output to be coupled to a second application voltage node associated with the first arm of the Mach-Zehnder modulator. The first driver and the second driver differentially drive the first and second application voltage nodes associated with the first arm of the Mach-Zehnder modulator to result in a voltage swing associated with a voltage applied to the first arm that is twice the supply voltage.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: March 9, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Manohar Bhavsar Nagaraju, Sean P. Anderson, Alexander Christopher Kurylak, Kadaba Lakshmikumar
  • Patent number: 10879478
    Abstract: A polymer solar cell includes an anode electrode, a photoactive layer, an insulating layer, a cathode electrode stacked on each other in that order. The photoactive layer includes a polymer layer and a plurality of carbon nanotubes dispersed in the polymer layer. Each of the plurality of carbon nanotubes includes a first end and a second end opposite to the first end, the first end passes through the insulating layer and is in direct contact with the cathode electrode, and the second end is embedded in the polymer layer.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 29, 2020
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Wen Ning, Peng Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 10873399
    Abstract: Methods and systems for a photonic interposer may include receiving a continuous wave (CW) optical signal in a silicon photonic interposer from an optical source. A modulated optical signal may be generated by processing the received CW optical signal based on a first electrical signal received from an electronics die. A second electrical signal may be generated in the silicon photonic interposer based on the generated modulated optical signal, and may then be communicated to the electronics die via copper pillars. Optical signals may be communicated into and/or out of the silicon photonic interposer utilizing grating couplers. The electronics die may comprise one or more of a processor core, a switch core, memory, or a router.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: December 22, 2020
    Assignee: Luxtera LLC
    Inventors: Mark Peterson, Greg Young, Peter De Dobbelaere
  • Patent number: 10852570
    Abstract: A silicon optical modulator is fabricated to have a multi-slab structure between the contacts and the waveguide, imparting desirable performance attributes. A first slab comprises dopant of a first level. A second slab adjacent to (e.g., on top of) the first slab, comprises a doped region proximate to a contact, and an intrinsic region proximate to the waveguide. The parallel resistance properties and low overlap between the highly doped silicon and optical mode pigtail afforded by the multi-slab configuration, allow the modulator to operate with reduced optical losses and at a high speed. Embodiments may be implemented in a Mach-Zehnder interferometer or in micro-ring resonator modulator configuration.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: December 1, 2020
    Assignee: INPHI CORPORATION
    Inventors: Xiaoguang Tu, Masaki Kato
  • Patent number: 10838240
    Abstract: An optoelectronic device comprising: a silicon-on-insulator (SOI) substrate, the substrate comprising: a silicon support layer; a buried oxide (BOX) layer on top of the silicon support layer; and a silicon device layer on top of the BOX layer; a waveguide region, where a portion of the silicon device layer and a portion of the BOX layer underneath the portion of the device layer have been removed, the portion of the BOX layer having been replaced with a layer of silicon and a layer of crystalline oxide on top of the silicon; and a waveguide structure located directly on top of the crystalline oxide layer, the waveguide structure including a P doped region, and an N doped region with an intrinsic region in-between, creating a PIN junction across which a bias can be applied to create a modulation region.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: November 17, 2020
    Assignee: Rockley Photonics Limited
    Inventors: Guomin Yu, Aaron John Zilkie
  • Patent number: 10816791
    Abstract: Subject matter disclosed herein relates to arrangements and techniques that provide for controlling motion of an electrowetting oil within an electrowetting display device. An electrowetting display device comprises a substrate, an electrode on the substrate, a dielectric layer on a first portion of the electrode. The electrode extends along the substrate one of either entirely from a first end of a pixel area to a second end of the pixel area, or from the first end of the pixel area to the second end of the pixel area such that a portion of the substrate is an electrode free portion to thereby define a notch. A first fluid is disposed on a hydrophobic layer and a second fluid is disposed on the first fluid, the second fluid being immiscible with the first fluid. A dielectric constant of the dielectric layer is greater than a dielectric constant of the first fluid.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: October 27, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Gor Manukyan, Daniel Figura
  • Patent number: 10816866
    Abstract: The disclosure discloses a reflective electrochromic display panel, and the reflective electrochromic display panel includes: an upper substrate, a common electrode layer, an electrochromic layer, a pixel electrode layer and a lower substrate sequentially arranged from top to bottom. The electrochromic layer includes a red electrochromic layer, a green electrochromic layer and a blue electrochromic layer. The electrochromic layers reflecting corresponding lights upon receiving a voltage, and the reflection light of the electrochromic layers is zero when no voltage is received. The display panel of the disclosure is equipped with an electrochromic layer, and the different voltage characteristics of the electrochromic layer are used to improve the utilization of light and visual angle limitation of the display panel, thereby improving the performance of the liquid crystal display.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: October 27, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Xiang Li