Particle Suspensions (e.g., Electrophoretic) Patents (Class 345/107)
  • Patent number: 10997930
    Abstract: A display device is operated by using several iterations of a scan phase followed by a global drive phase. In the scan phase, the state of each pixel in the display device is set to either “enabled” or “disabled”, during which time a global drive generator is inactive. Then, in the global drive phase, a global drive signal is sent to the display device. Only the subset of enabled pixels is affected by the global drive signal, which causes the enabled pixels to perform a transition to a desired display state. The sequence of the scan phase followed by the global drive phase is then repeated up to the number of unique transitions required to update the display device.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: May 4, 2021
    Assignee: E Ink Corporation
    Inventor: Kenneth R. Crounse
  • Patent number: 10991909
    Abstract: An organic light emitting display device includes: a thin film transistor disposed in a display area of a substrate; an insulating layer disposed on the thin film transistor; an organic light emitting element disposed on the insulating layer and connected to the thin film transistor; and an encapsulation layer covering the organic light emitting element. The encapsulation layer includes: a first inorganic layer extending from the organic light emitting element to a non-display area; an organic layer disposed on the first inorganic layer; a second inorganic layer extending from the organic layer to the non-display area; and an organic pattern layer disposed between the first inorganic layer and the second inorganic layer and spaced apart from the organic layer in the non-display area. At least a part of the first inorganic layer and at least a part of the second inorganic layer may contact each other in the non-display area.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 27, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seol Kim, Eunah Kim, Sungchan Jo
  • Patent number: 10978517
    Abstract: A display substrate includes a base substrate and a filter conversion layer disposed on the base substrate. The filter conversion layer includes a light conversion material capable of absorbing light with a wavelength less than a preset wavelength range, and converting the absorbed light into light with a wavelength in the preset wavelength range. The filter conversion layer is configured to allow the light with the wavelength in the preset wavelength range to pass through.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: April 13, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qingchao Zhou, Qing Wang, Shengji Yang, Xiaochuan Chen
  • Patent number: 10955697
    Abstract: A display device is disclosed that includes a backlight comprising light-emitting diodes. The disclosed display device includes a liquid crystal panel configured to control transmission of light from the backlight to a viewer. The display device also includes one or more optical films that incorporate one or more light conversion materials.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: March 23, 2021
    Assignee: Eyesafe Inc.
    Inventors: Arkady Garbar, Bonnie G. Simmons, Robert Visser
  • Patent number: 10908472
    Abstract: An electrophoretic display apparatus including a driving array substrate, a color filter layer, and an electrophoretic display film is provided. The driving array substrate has a plurality of display units. The color filter layer is disposed on the driving array substrate. The color filter layer includes a plurality of color filter patterns. Each of the display units corresponds to the color filter patterns of two different colors. The electrophoretic display film is between the driving array substrate and the color filter layer. The electrophoretic display film includes a plurality of display mediums. Each of the display mediums includes an electrophoretic liquid, a plurality of color charged particles, a plurality of black charged particles, and a plurality of white charged particles. A color of the color charged particles is different from colors of the color filter patterns.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: February 2, 2021
    Assignee: E Ink Holdings Inc.
    Inventors: Po-Yuan Lo, Lee-Tyng Chen
  • Patent number: 10901287
    Abstract: The present invention provides driving methods for electrophoretic color display devices. The backplane system used for the driving methods is found to be simpler which renders color display devices more cost effective. More specifically, the driving method comprises first driving all pixels towards a color state by modulating only the common electrode, followed by driving all pixels towards their desired color states by maintaining the common electrode grounded and applying different voltages to the pixel electrodes.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: January 26, 2021
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Craig Lin, Chi-Mao Hung
  • Patent number: 10901288
    Abstract: A display device including a pair of substrates having surfaces facing each other and electrodes formed on the surfaces, respectively, a display medium having a memory effect and formed between the pair of substrates, and a drive unit that applies a drive voltage to the display medium. The display medium includes charged particles encapsulated therein such that movement of the charged particles based on a voltage applied by the drive unit provides display, and the charged particles include first particles for displaying a first color with application of a first voltage, second particles for displaying a second color with application of a second voltage having a polarity different from a polarity of the first voltage, and third particles for displaying a third color with application of a third voltage which has the same polarity as the polarity of the first voltage and an absolute value smaller than an absolute value of the first voltage.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: January 26, 2021
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Takehisa Takada, Mamoru Ishizaki
  • Patent number: 10891906
    Abstract: The invention relates to electrophoretic layers containing at least five different particles, and to driving methods for displaying at least five, and in some embodiments, six different colors at each pixel or sub-pixel. The electrophoretic layers may also contain uncharged neutral buoyancy particles, and the driving methods may include special shaking waveform sequences.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: January 12, 2021
    Assignee: E INK CALIFORNIA, LLC
    Inventor: Craig Lin
  • Patent number: 10891907
    Abstract: A color display device in which each pixel can display four high-quality color states. More specifically, an electrophoretic fluid is provided which comprises four types of particles, dispersed in a solvent or solvent mixture, wherein each type of particle has a different charge profile (polarity and magnitude) and a different optical characteristic. When driven with a two-step process, a mixture of the particles having the highest charge state can be seen at the viewing surface.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: January 12, 2021
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Craig Lin, Ming-Jen Chang
  • Patent number: 10886439
    Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: January 5, 2021
    Assignee: Lumileds LLC
    Inventors: Dawei Lu, Oleg Shchekin
  • Patent number: 10871698
    Abstract: According to one embodiment, a display device includes a capacitance electrode, a first pixel electrode overlapping the capacitance electrode, a second pixel electrode overlapping the capacitance electrode, a shield layer disposed between the first pixel electrode and the second pixel electrode, a common electrode, and an electrophoretic element disposed between the common electrode and the first pixel electrode and between the common electrode and the shield layer. The first pixel electrode and the second pixel electrode are arranged along a first direction, and the shield layer extends in a second direction which crosses the first direction between the first pixel electrode and the second pixel electrode.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: December 22, 2020
    Assignee: Japan Display Inc.
    Inventors: Takahiro Takeuchi, Yoshitaka Ozeki, Koji Ishizaki, Tomoyasu Hirano, Koshiro Moriguchi
  • Patent number: 10852616
    Abstract: The present disclosure is in the field of an electrophoretic device for switching between a transparent and non-transparent mode, comprising a fluid and particles, electrodes for moving said particles, and comprising various further elements, as well as uses thereof, in particular as a window blind.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: December 1, 2020
    Assignee: ELSTAR DYNAMICS PATENTS B.V.
    Inventor: Romaric Mathieu Massard
  • Patent number: 10825404
    Abstract: The present invention is directed to driving methods for driving an electro-optic display device which can display high quality color states. The electro-optic display may have a plurality of display pixels, a first type of pigment particle, a second type of pigment particle, and a third type of pigment particle, wherein the three types of pigment particles have optical characteristics differing from one another, the method may include: (i) driving a display pixel to the color state of the first type of pigment particles or the color state of the second type of pigment particles; (ii) driving the pixel to a grey state between the color state of the first type of pigment particle and the color state of the second type of pigment particles; and (iii) applying at least one pair of opposite driving pulses.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: November 3, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Craig Lin, Ming Wang
  • Patent number: 10816867
    Abstract: A display panel, including first and second substrates assembled into a cell, a transparent medium provided therebetween, and charged light-absorbing particles mixed in the transparent medium. The first substrate includes a first base body and a total internal reflection structure, and a refractive index of the transparent medium is smaller than each of refractive indexes of the total internal reflection structure and the light-absorbing particles. Each pixel unit of the display panel is provided with plural electrode walls therein, the plural electrode walls in each pixel unit include first and second electrode walls. In a direction parallel to the display panel, the first electrode walls and the second electrode walls are provided alternately and wall surfaces thereof are opposite to each other, and electrode walls arranged opposite to each other are provided with a part of the total internal reflection structure therebetween.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 27, 2020
    Assignee: CONCORD (HK) INTERNATIONAL EDUCATION LIMITED
    Inventors: Pengxia Liang, Ken Wen, Jing Yu
  • Patent number: 10809566
    Abstract: A reflector, and a method for controlling the same, a backlight module, and a display device are provided in the embodiments of the disclosure, the reflector including a first electrode layer and a second electrode layer opposite to and spaced apart from each other; the first electrode layer and the second electrode layer are configured to form a variable electrical field between the first electrode layer and the second electrode layer in response to electrical signals applied respectively on the first electrode layer and the second electrode layer; and light reflective particles and light absorptive particles are distributed in a space therebetween, the light reflective particles and the light absorptive particles being charged oppositely, the light reflective particles reflecting light rays while the light absorptive particles absorbing light rays, respectively.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: October 20, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHONGQING BOE DISPLAY LIGHTING CO., LTD.
    Inventors: Xihong Zhong, Wei Wang, Yong Yang
  • Patent number: 10804503
    Abstract: A highly reliable light-emitting device is provided. A yield in a manufacturing process of a light-emitting device is increased. A light-emitting device is provided in which a non-light-emitting portion having a frame-like shape outside a light-emitting portion includes a portion thinner than the light-emitting portion. A light-emitting element and a bonding layer are formed over a substrate. The light-emitting element is sealed by overlapping a pair of substrates and curing the bonding layer. Then, while the cured bonding layer is heated, pressure is applied to at least a portion of the non-light-emitting portion with a member having a projection.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: October 13, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Akihiro Chida
  • Patent number: 10802373
    Abstract: A polymeric film includes a plurality of tapered microcells containing a dispersion of a first group and a second group of charged particles. The first group and second group of charged particles having opposite charge polarities. The tapered microcells include a wall and at least a portion of the wall is configured to repel the first group of charged particles. Also provided is a method of making a laminate for an electrophoretic display comprising embossing a plurality of tapered microcells through a layer of polymeric film and into a release sheet to form an embossed film; laminating the embossed film to a layer of conductive material on a protective sheet to form a laminated film; removing the release sheet from the polymeric film to form an opening to an interior of each microcell of the laminated film; filling the microcells with a dispersion fluid; and sealing the microcells.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: October 13, 2020
    Assignee: E Ink Corporation
    Inventors: George G. Harris, Jay William Anseth
  • Patent number: 10795216
    Abstract: Provided is a method of manufacturing a display device including a louver that is capable of changing viewing angle. The method includes: a first step of forming a first electrode layer to drive the louver on a first main face of a first substrate; a second step of forming a resin layer on the first electrode layer; a third step of forming louver grooves to contain electrophoretic particles and dispersion medium in the resin layer; a fourth step of forming a sealing layer having a flat top face on the resin layer having the louver grooves in such a manner that the sealing layer closes the louver grooves; a fifth step of forming color filters on the sealing layer; and a sixth step of forming a second electrode layer to drive the louver on the sealing layer.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: October 6, 2020
    Assignee: TIANMA JAPAN, LTD.
    Inventors: Tetsuroh Asakura, Hideki Nishimura, Futoshi Nakanishi
  • Patent number: 10789036
    Abstract: A method and apparatus provide for removal of a display screen from a wireless device, or, in a different embodiment, provide for a display screen as a separate and additional device that functions in real time in the same way as if the screen were incorporated in the wireless device. This functionality is enabled by a short range wireless connection, such as Bluetooth, between transceivers located in the wireless device and the display screen device. The display screen device allows a user to monitor the associated wireless device without needing to operate the full device. The display screen device may also have control capability for controlling the wireless device. Thus, a user can monitor and control a mobile device from a smaller remote display device while being presented with the information that would be displayed on the display screen of the wireless device.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: September 29, 2020
    Assignee: AT&T Mobility II LLC
    Inventors: Mark J. Enzmann, Paul Christopher Grooms, Robert Torrence Moton, Jr.
  • Patent number: 10783839
    Abstract: An image update determining unit compares a previously set temperature with a temperature estimated by a temperature increase estimating unit, and determines whether or not an image update operation is executable, and an image update interval is appropriately set according to the estimated temperature by performing image update on an image to be displayed next when the image update determining unit determines the image update operation to be executable but not performing image update when the image update determining unit determines the image update operation to be non-executable.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: September 22, 2020
    Assignee: TIANMAN MICROELECTRONICS CO., LTD.
    Inventors: Tetsushi Sato, Kazunori Masumura, Koji Shigemura
  • Patent number: 10761395
    Abstract: The present invention is directed to an electrophoretic display device comprising an electrophoretic fluid which fluid comprises two type of charged particles dispersed in a solvent, wherein the two types of charged particles are of the same color, but carrying opposite charge polarities.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: September 1, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Hui Du, Peter Laxton, Yu Li
  • Patent number: 10762857
    Abstract: An electrophoretic display including a passive matrix formed of row and column electrodes with an electrophoretic medium including two types of differently-colored charged particles disposed between the row and column electrodes. When the device is driven to a first color state by providing a voltage differential of 15V, the color state is stable for voltage differentials between 15V and ?5V. The display switches to the second color state when a voltage differential of ?15V is provided.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: September 1, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Ming Wang, Craig Lin, Hui Du, HongMei Zang, XiaoJia Zhang
  • Patent number: 10732479
    Abstract: An example fighting device has a luminaire and a driver circuit. The luminaire includes a variable electrokinetic optic that includes an electrokinetic fluid between a transparent substrate and a diffuser. The electrokinetic fluid includes a carrier fluid mixed with charged particles. The variable electrokinetic optic further includes a transparent substrate electrode and a diffuser electrode configured to generate an electric field in the electrokinetic fluid in response to a control voltage applied across the transparent substrate electrode and the transparent diffuser electrode. The electric field attracts the charged particles to adjust an effective birefringence of the variable electrokinetic optic. Increasing the effective birefringence increases an output beam angle of the emitted illumination lighting relative to an input beam angle. The driver circuit selectively controls the applied control voltage.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: August 4, 2020
    Assignee: ABL IP HOLDING LLC
    Inventor: Alexander Jacob Schultz
  • Patent number: 10714698
    Abstract: The present disclosure relates to a free-form display that can freely alter its shape by connecting a plurality of micro display elements by a flexible medium. The free-form display comprises a flexible substrate, a plurality of unit pixel substrates, and a flexible medium. The unit pixel substrates are arranged in a matrix on the flexible substrate. The flexible medium fills gaps between the unit pixel substrates.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: July 14, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Byeongil Lee, Jongmoo Kim, Hansol Choi
  • Patent number: 10705638
    Abstract: A computing device is disclosed. The computing device may include a display, a processor in communication with the display and an enclosure connected to the display. The computing device may also include an input/output (I/O) device in communication with the processor. The I/O device may also be connected to the enclosure. Additionally, the I/O device may include a modifiable display that may substantially match the appearance of the enclosure.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: July 7, 2020
    Assignee: APPLE INC.
    Inventors: Chris Ligtenberg, Euan S. Abraham, Jun Qi, Paul S. Drzaic, Po-Wen Chiu, Ron Hopkinson, Michelle Goldberg, Victor H. Yin, Bartley K. Andre, Mikael Silvanto, Erin Turullols
  • Patent number: 10705404
    Abstract: The disclosed embodiments relate to lateral migration of particles in a totally internally reflective displays. In certain embodiments, the reflective image displays include partial and full walls to form partitions within the display. The walls mitigate diffusion and lateral migration or drift of electrophoretically mobile particles due to lateral electric fields at adjacent pixels. This improves image quality, bistability and long-term display performance.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: July 7, 2020
    Assignee: Concord (HK) International Education Limited
    Inventors: Bram M. Sadlik, Robert J. Fleming, Steven Gou, Scott W. Ferguson, Rob Hannebauer, Alex Henzen
  • Patent number: 10686246
    Abstract: Disclosed is a display module that includes at least one antenna, for use in an electronic device. The display module includes a display panel, and a magnetic sheet disposed under the display panel. The at least one antenna is disposed above the magnetic sheet. The magnetic sheet may serve to prevent degradation of electronic device performance by preventing the generation of eddy currents on a nearby metal part of the device.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: June 16, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soon Park, Jong-Hyun Park, Yong Heo
  • Patent number: 10685340
    Abstract: A portable point-of-sale (POS) system includes a stand, an adjustable arm coupled to the stand, and a housing. The housing is coupled to the adjustable arm and includes a locking side panel having an integrated locking mechanism. The housing is configured to removably enclose a computing device used to facilitate an electronic transaction. The locking side panel is configured to enclose the computing device within the housing. The integrated locking mechanism and the locking side panel are configured to lock the computing device within the housing.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: June 16, 2020
    Assignee: PAYPAL, INC.
    Inventors: Satish Govindarajan, Michael Voege, Murthy Bobba, Khiem Pham, Gunabalan Babu, Uris Dacosta, Richard Tilghman, Daniel Potter
  • Patent number: 10679571
    Abstract: An electronic paper display including an electronic paper display panel and a driver circuit is provided. The electronic paper display panel includes a plurality of pixels. The driver circuit is coupled to the electronic paper display panel. The driver circuit drives a target pixel of the pixels to display a color by using a driving signal. The driving signal includes a reset period, an interleaving period, and a display period. A voltage of the driving signal is zero during the interleaving period. In addition, a method for driving an electronic paper display panel is also provided.
    Type: Grant
    Filed: February 11, 2018
    Date of Patent: June 9, 2020
    Assignee: E Ink Holdings Inc.
    Inventors: Chen-Kai Chiu, Hsin-I Wu, Feng-Shou Lin
  • Patent number: 10672350
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods include (a) applying a first drive scheme to a non-zero minor proportion of the pixels of the display and a second drive scheme to the remaining pixels, the pixels using the first drive scheme being changed at each transition; (b) using two different drive schemes on different groups of pixels so that pixels in differing groups undergoing the same transition will not experience the same waveform; (c) applying either a balanced pulse pair or a top-off pulse to a pixel undergoing a white-to-white transition and lying adjacent a pixel undergoing a visible transition; (d) driving extra pixels where the boundary between a driven and undriven area would otherwise fall along a straight line; and (e) driving a display with both DC balanced and DC imbalanced drive schemes, maintaining an impulse bank value for the DC imbalance and modifying transitions to reduce the impulse bank value.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: June 2, 2020
    Assignee: E Ink Corporation
    Inventors: Karl R. Amundson, Matthew J. Aprea, Kenneth R. Crounse, Demetrious Mark Harrington, Jason Lin, Theodore A. Sjodin, Chia-Chen Su
  • Patent number: 10663834
    Abstract: A constitution of the display device of the invention is shown in the following. The display device includes a pixel unit including TFTs of which the active layer contains an organic semiconductor material for forming channel portions in the opening portions in an insulating layer arranged to meet the gate electrodes. The pixel unit further includes a contrast media formed on the electrodes connected to the TFTs for changing the reflectivity upon the application of an electric field, or microcapsules containing electrically charged particles that change the reflectivity upon the application of an electric field. The pixel unit is sandwiched by plastic substrates, and barrier layers including an inorganic insulating material are provided between the plastic substrates and the pixel unit. The purpose of the present invention is to supply display devices which are excellent in productivity, light in weight and flexible.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: May 26, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yasuyuki Arai
  • Patent number: 10661547
    Abstract: A display laminate which includes a front electrode layer, a display material layer and a protective film layer, wherein the protective film layer and the display material layer are narrower than the front electrode layer and wherein the protective film layer and the display material layer have a common edge with the front electrode layer on a first side and a common edge with each other but not with the front electrode layer on an opposite side.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: May 26, 2020
    Assignee: MARIELLA LABELS OY
    Inventors: Esa Hämäläinen, Tero Kallioinen, Jouko Parppei
  • Patent number: 10656493
    Abstract: A laminate which can serve as either a smart window or a smart mirror is formed using first and second substrates coated with transparent first and second electrodes which are separated by foraminous layer and a third grid-like linear electrode insulated from the first and second electrodes The foraminous layer includes spacers defining a cell space which is filled with a colloidal ink having first and second particles. The first particles have a positive charge and a first color and second particles having a negative charge and a second color different from the first color. By altering the voltages of the first, second and third electrodes, one can achieve different light transmission characteristics which, for example, can alter the color temperature of the light transmitted through the laminate or enhance reflective colors.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: May 19, 2020
    Assignee: University of Cincinnati
    Inventors: Jason Charles Heikenfeld, Sayantika Mukherjee
  • Patent number: 10643541
    Abstract: The present disclosure relates to a driving circuit of a display panel, a display panel and a display device. The driving circuit includes at least one potential saving unit and at least one column of pixel driving units. The potential saving unit is arranged corresponding to a column of pixel units, and is configured to output a first potential signal based on a voltage of the external preset power supply and save the first potential signal to the first potential output terminal, while outputting a second potential signal and saving the second potential signal to the second potential output terminal.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 5, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Minghua Xuan, Shengji Yang, Li Xiao, Dongni Liu, Jie Fu, Pengcheng Lu, Xiaochuan Chen, Lei Wang
  • Patent number: 10645807
    Abstract: Methods of and devices for coupling metal woven mesh or metal woven fabric with IC components to make flexible circuits are disclosed. The flexible circuits can be used to make wearable electronic devices, such as a garment with embedded IC chip.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: May 5, 2020
    Assignee: Flextronics AP, LLC.
    Inventors: Weifeng Liu, Anwar Mohammed, Murad Kurwa
  • Patent number: 10599005
    Abstract: The invention provides an electrophoretic medium comprising at least two types of particles having substantially the same electrophoretic mobility but differing colors. The invention also provides article of manufacture comprising a layer of a solid electro-optic medium, a first adhesive layer on one surface of the electro-optic medium, a release sheet covering the first adhesive layer, and a second adhesive layer on an opposed second surface of the electro-optic medium.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: March 24, 2020
    Assignee: E Ink Corporation
    Inventors: Gregg M. Duthaler, Karl R. Amundson, Barrett Comiskey, Alberto Goenaga, John E. Ritter, Michael L. Steiner, Robert W. Zehner
  • Patent number: 10593272
    Abstract: A method for driving an electro-optic display having a front electrode, a backplane, and a display medium including at least three differently-colored particles, wherein the medium is positioned between the front electrode and the backplane. The method includes applying a reset phase and a color transition phase to the display such that the sum of all impulses results in an offset that maintains a DC-balance across the display medium. The invention additionally includes controllers for executing the method.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 17, 2020
    Assignee: E Ink Corporation
    Inventors: Stephen J. Telfer, Christopher L. Hoogeboom, Kenneth R. Crounse
  • Patent number: 10586499
    Abstract: A color display device in which each pixel can display four high-quality color states. More specifically, an electrophoretic fluid is provided which comprises four types of particles, dispersed in a solvent or solvent mixture, wherein each type of particle has a different charge profile (polarity and magnitude) and a different optical characteristic. When driven with a two-step process, the particles of lower charge magnitude can be driven to the viewing surface while the particles with higher charge magnitude are not viewable at the viewing surface.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: March 10, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Craig Lin, Ming-Jen Chang
  • Patent number: 10580368
    Abstract: A color reflective display device includes a plurality of color sub-pixels and a control circuit. The control circuit is configured to provide a first driving signal to at least one of a plurality of mini-pixels of a first color sub-pixel, such that the at least one of mini-pixels receiving the first driving signal displays a first color, provide a second driving signal to another at least one of the mini-pixels of the first color sub-pixel, such that the another at least one of the mini-pixels receiving the second driving signal displays a second color, and provide a third driving signal to a second color sub-pixel of the color sub-pixels, such that the second color sub-pixel displays a third color.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: March 3, 2020
    Assignee: E Ink Holdings Inc.
    Inventors: Po-Yuan Lo, Tai-Yuan Lee, Pei-Lin Huang
  • Patent number: 10573222
    Abstract: A first display comprises a layer of electro-optic material with first and second electrodes on opposed sides thereof, at least one electrode. One or both electrodes having at least two spaced contacts, and voltage control means are arranged to vary the potential difference between the two spaced contacts attached to the same electrode. A second display comprises a layer of electro-optic material with a sequence of at least three electrodes adjacent thereto. Voltage control means vary the potential difference between the first and last electrodes of the sequence. The electrodes of the sequence alternate between the two surfaces of the layer of electro-optic material, and have edges which overlap with or lie adjacent the preceding and following electrodes of the sequence. The electrodes, other than the first and last, are electrically isolated such that the potential thereof is controlled by passage of current through the layer of electro-optic material. Methods for driving these displays are also provided.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: February 25, 2020
    Assignee: E Ink Corporation
    Inventors: Richard J. Paolini, Jr., Stephen Bull, Seth J. Bishop, Stephen J. Telfer, Karl Raymond Amundson
  • Patent number: 10565942
    Abstract: One example provides a display device. The display device includes an electronic paper display imageable by receiving charges on an imaging surface of the electronic paper display. The display device includes a first ground electrode opposite to a first portion of the imaging surface of the electronic paper display and a second ground electrode opposite to a second portion of the imaging surface of the electronic paper display. Writing to the second portion of the electronic paper display is selectively disableable.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: February 18, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Henryk Birecki, Omer Gila, Napoleon J Leoni, Steven J Simske
  • Patent number: 10559617
    Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: February 11, 2020
    Assignee: LUMILEDS LLC
    Inventors: Dawei Lu, Oleg Shchekin
  • Patent number: 10540486
    Abstract: A transaction medium comprises a non-e-paper portion and a passive e-paper display portion to display a first expression of an authentication element in a secure representation. The first expression is related to a second expression of the authentication element, wherein a comparison of the first expression and the second expression determines authentication.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: January 21, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steven J Simske, Omer Gila, Henryk Birecki, Napoleon J Leoni
  • Patent number: 10517180
    Abstract: A display device includes a flexible display panel; a rolling driver including a rolling shaft connected to the flexible display panel and a rotation motor which rotates the rolling shaft; a housing which receives the flexible display panel in a rolled state, where a first opening is defined in the housing for unrolling and rolling the flexible display panel; a rolling stopper coupled to the flexible display panel; and a rolling controller which controls the rolling driver such that the rotation motor rotates in a clockwise or counterclockwise direction. The rolling controller rotates the rotating motor in a direction opposite to a rotating direction of the rotation motor for a previous rolling to unroll the flexible display panel. The rolling controller rotates the rotating motor in a same direction as a rotating direction of the rotation motor for a previous unrolling to roll the flexible display panel.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: December 24, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byeong Hwa Choi, Seung Bae Lee
  • Patent number: 10509294
    Abstract: An image display medium includes a first and second layer of encapsulated dispersion fluid containing charged particles and a front and rear light-transmissive electrode. The first layer is positioned between the front light-transmissive electrode and the second layer and the second layer is position between the first layer and the rear light-transmissive electrode. The charged particles within the first layer have a color similar to and a charge opposite of the charged particles within the second layer. Alternatively, the charged particles within the first layer may have a color and a charge similar to the charged particles within the second layer and the display medium includes a common conductor positioned between the first and second layer that is configured to drive the charged particles in the first and second layer.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: December 17, 2019
    Assignee: E Ink Corporation
    Inventor: Stephen J. Telfer
  • Patent number: 10504457
    Abstract: The present invention is directed to methods of passively driving an electrophoretic display. The electrophoretic fluid comprises three types of particles wherein two types particles are charged pigment particles having opposite charge polarities and contrasting colors. The third type of particle is larger in diameter than the first and second types of particles, and is less charged than the first and second types of particles, i.e., the third particle type is substantially uncharged. The electrophoretic medium is driven with two sets of electrodes, each set comprising a number of addressable electrodes.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: December 10, 2019
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Ming Wang, Craig Lin, Hui Du, HongMei Zang, Xiaojia Zhang
  • Patent number: 10495940
    Abstract: A composite electrophoretic display comprised of multiple, stacked, non-planar electrophoretic displays. The individual electrophoretic displays that form the composite display may be driven separately using different driving signals. The electrical connections for the individual displays may be configured to minimize the impact of the electrical connections on the overall aesthetic of the composite display.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: December 3, 2019
    Assignee: E Ink Corporation
    Inventors: George G. Harris, Olga Vladimirovna Barykina-Tassa, Brandon MacDonald
  • Patent number: 10475396
    Abstract: Electro-optic displays with reduced remnant voltage, and related apparatus and methods are provided. A remnant voltage of a pixel of an electro-optic display may be discharged by activating the pixel's transistor and setting the voltages of the front and rear electrodes of the pixel to approximately the same voltage for a specified period of time, and/or until the amount of remnant voltage remaining in the pixel is less than a threshold amount. The remnant voltages of substantially all pixels or a subset of pixels in an active matrix electro-optic display may be simultaneously discharged. The simultaneous discharge of the remnant voltages of pixels may take place when the pixels are in a same state, characterized by (1) the transistor of each pixel being active, and (2) the voltages applied to the front and rear electrodes of each pixel being approximately equal.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: November 12, 2019
    Assignee: E Ink Corporation
    Inventors: Teck Ping Sim, Kenneth R. Crounse, Pierre-Yves Emelie, Karl Raymond Amundson
  • Patent number: 10475148
    Abstract: A smart display including one or more groups of smart pixels and at least one graphics engine. The at least one graphics engine is fragmented into GPU (graphics processing unit) minute cores. The GPU minute cores are distributed throughout the smart display. The smart pixels with distributed graphics within the smart display perform deep learning. Libraries stored on GPU minute core embedded memory are used to perform object identification using deep learning. The smart display monitors for pixel degradation and, if necessary, performs pixel enhancement.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: November 12, 2019
    Assignee: Intel Corporation
    Inventors: Kunjal Parikh, Srikanth Kambhatla, Gary Smith, Changliang Wang
  • Patent number: 10475401
    Abstract: An electrowetting display device comprising an electrowetting element comprising a control system, a first fluid, a second fluid immiscible with the first fluid, and a first and second support plate. A first and second electrode are, respectively, overlapped by a first and second portion of a surface of the first support plate. The control system is operable to, in response to input data indicative of a first grey level, apply a first voltage between the second fluid and the first electrode such that the second fluid is in contact with at least part of the first portion and, subsequently, apply a second voltage between the second fluid and the second electrode to translate the first fluid such that the second fluid is in contact with at least part of the second portion.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: November 12, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert Andrew Hayes, Gor Manukyan, Melanie Maria Hubertina Wagemans, Daniel Figura, Bokke Johannes Feenstra, Toru Sakai