Particle Suspensions (e.g., Electrophoretic) Patents (Class 345/107)
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Patent number: 12218661Abstract: A driver circuit of a display device is provided. The driver circuit includes a high-side transistor, a high-side voltage drop suppressor circuit, a low-side transistor, a low-side voltage drop suppressor circuit and a control circuit. When the driver circuit supplies power supplies power generated from a high-side input voltage, the control circuit turns on the high-side voltage drop suppressor circuit for reducing a voltage drop across a first terminal and a second terminal of the high-side transistor. When the driver circuit supplies power generated from a low-side input voltage, the control circuit turns on the low-side voltage drop suppressor circuit for reducing a voltage drop across a first terminal and a second terminal of the low-side transistor.Type: GrantFiled: October 12, 2023Date of Patent: February 4, 2025Assignee: INTEGRATED SOLUTIONS TECHNOLOGY INC.Inventor: Wei-Te Lee
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Patent number: 12142235Abstract: An apparatus including a pixel electrode circuit is provided. The pixel electrode circuit includes a first switch, a second switch, a first-type transistor, a first second-type transistor, and a second second-type transistor. The first switch and the second switch are respectively controlled by a first control signal and a second control signal. The first-type transistor includes a gate electrically connected to a first node, a first terminal connected to a first power supply voltage, and a second terminal connected to a third node. The first second-type transistor includes a gate electrically connected to a second node, a first terminal connected to a second power supply voltage, and a second terminal connected to the third node. The second second-type transistor includes a gate electrically connected to the second node, a first terminal being grounded, and a second terminal providing an output voltage.Type: GrantFiled: October 6, 2023Date of Patent: November 12, 2024Assignee: CYTESI INC.Inventors: Tung-Yu Wu, Chung-Yi Wang, Tang-Hung Po
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Patent number: 12131713Abstract: Continuous waveforms for driving a four-particle electrophoretic medium including four different types of particles, for example a set of scattering particles and three sets of subtractive particles. Methods for identifying a preferred waveform for a target color state or a target transition when using a continuous or quasi-continuous voltage driver/controller.Type: GrantFiled: February 7, 2022Date of Patent: October 29, 2024Assignee: E Ink CorporationInventors: Amit Deliwala, Sunil Krishna Sainis
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Patent number: 12130534Abstract: A capsule comprising a capsule wall and an electrophoretic fluid encapsulated by the capsule wall. The capsule wall comprises a cross-linked nonionic, water-soluble or water-dispersible polymer. The electrophoretic fluid comprises a suspending fluid, first pigment particles, second pigment particles, and third pigment particles. In some embodiments, the electrophoretic fluid includes a fourth electrophoretic particle. The first, second, and third particles are electrically charged, suspended in the suspending fluid, and capable of moving through the suspending fluid upon application of an electric field to the capsule.Type: GrantFiled: March 7, 2023Date of Patent: October 29, 2024Assignee: E Ink CorporationInventors: Stephen J. Telfer, Rosa Casado, Sergey Egorov, Erin Criswell Chang, Jay William Anseth, Ana L. Lattes, Lynne A. McCullough
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Patent number: 12105396Abstract: Improved electro-optic devices are disclosed comprising an electrophoretic material layer comprising electrophoretic medium disposed between electrodes, and a conductive edge seal. The conductive edge seal is not only used to prevent ingress of moisture in the device, but also to electrically connect the electrodes. An improved method of producing an electro-optic device having conductive edge seal is also disclosed.Type: GrantFiled: June 30, 2021Date of Patent: October 1, 2024Assignee: E Ink CorporationInventor: Matthew Joseph Kayal
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Patent number: 12100369Abstract: A system for rendering color images on an electro-optic display when the electro-optic display has a color gamut with a limited palette of primary colors, and/or the gamut is poorly structured (i.e., not a spheroid or obloid). The system uses an iterative process to identify the best color for a given pixel from a palette that is modified to diffuse the color error over the entire electro-optic display. The system additionally accounts for variations in color that are caused by cross-talk between nearby pixels.Type: GrantFiled: November 3, 2022Date of Patent: September 24, 2024Assignee: E Ink CorporationInventors: Kenneth R. Crounse, Stephen J. Telfer, Edward Buckley, Sunil Krishna Sainis
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Patent number: 12033345Abstract: A positioning method including: acquiring a gray-scale image of an object to be measured to determine a gray-scale value of each pixel on the gray-scale image; determining a target area to be measured and a first gray-scale change area adjacent to the target area to be measured based on the gray-scale value of each pixel; determining a target gray-scale value based on a gray-scale value of the target area to be measured and a gray-scale value of each pixel in the first gray-scale change area; determining target pixels that conform to the target gray-scale value in the first gray-scale change area, to use the target pixels as actual edge pixels of the target area to be measured; and determining a relative distance between a center position of the target area to be measured and a reference position, to obtain position information of the target area.Type: GrantFiled: September 1, 2021Date of Patent: July 9, 2024Assignee: KunShan Go-Visionox Opto-Electronics Co., LtdInventors: Yuan Zhang, Naixi Chen
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Patent number: 12020659Abstract: An image display method and a display device are provided. The driving module is coupled with multiple pixel units in the display panel and provides a driving voltage according to display data to define an electric field to display an image. For each of the multiple pixel units, an image is displayed under an electric field defined by a first driving voltage corresponding to first display data during a display period of a first frame image. Reset data is output by the driving module to said each of the multiple pixel units. A reset voltage corresponding to the reset data provides an electric field for said each of the multiple pixel units. An image is displayed under an electric field defined by a second driving voltage corresponding to second display data during a display period of a second frame image.Type: GrantFiled: December 29, 2022Date of Patent: June 25, 2024Assignee: HKC CORPORATION LIMITEDInventors: Mancheng Zhou, Haijiang Yuan
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Patent number: 12020658Abstract: A color electrophoretic display that includes sets of duplicative waveforms to reduce visible artifacts during image updates. Such methods include driving extra pixels where the boundary between a driven and undriven area would otherwise lead to artifact by providing paired sets of driving instructions, allowing the undriven area to be driven while maintain the desired (undriven) optical state.Type: GrantFiled: December 19, 2022Date of Patent: June 25, 2024Assignee: E Ink CorporationInventors: Kenneth R. Crounse, Yuval Ben-Dov, Stephen J. Telfer, Jaya Kumar
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Patent number: 11955052Abstract: An electronic shelf label, which comprises: a display unit, which is designed for displaying image content, and a communication module, which is designed for wireless communication for the purpose of receiving image data, which represent the image content, and for transferring the image data to the display unit, characterized in that a detector unit is provided, which is designed for detecting an incorrect positioning, which differs from a desired positioning, of the electronic shelf label, and for outputting an action signal when the incorrect positioning is detected, and in that the electronic shelf label is designed to change the image content when the action signal is present.Type: GrantFiled: December 23, 2019Date of Patent: April 9, 2024Assignee: SES-IMAGOTAG GmbHInventor: Andreas Rössl
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Patent number: 11935495Abstract: Methods are described for driving an electro-optic display having a plurality of display pixels. Each of the display pixels is associated with a display transistor. The method includes the following steps in order. A first voltage is applied to a first display transistor associated with a first display pixel of the plurality of display pixels. The first voltage is applied during at least one frame of a driving waveform. A second voltage is applied to the first display transistor associated with the first display pixel. The second voltage has a non-zero amplitude less than the first voltage and is applied during the last frame of the driving waveform. The amplitude of the second voltage is based on a voltage offset value and a sum of remnant voltages each frame of the driving waveform contributes to the first display pixel when the first voltage is applied to the first display transistor.Type: GrantFiled: August 18, 2022Date of Patent: March 19, 2024Assignee: E Ink CorporationInventors: Aaron Chen, Teck Ping Sim, Kenneth R. Crounse, Karl Raymond Amundson
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Patent number: 11922893Abstract: Improved methods for driving an active matrix of pixel electrodes controlled with thin film transistors when the voltage on a top electrode is being altered between driving frames. The methods described increase performance by providing smaller swings in the overall voltage between the top electrode and pixel electrode while reducing stress on the thin film transistor.Type: GrantFiled: December 12, 2022Date of Patent: March 5, 2024Assignee: E Ink CorporationInventors: Kenneth R. Crounse, Stephen J. Telfer, Ana L. Lattes, Christopher L Hoogeboom, Richard J. Paolini, Jr., Seth J. Bishop
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Patent number: 11915663Abstract: A common voltage driving circuit, a display device, and an electronic device are provided. The common voltage driving circuit includes multiple scan lines and multiple common-voltage signal lines, and further includes multiple common electrode units arranged in an array. The multiple scan lines extend in a first direction and are arranged at intervals in sequence in a second direction perpendicular to the first direction. The multiple common-voltage signal lines extend in the second direction and are arranged at intervals in sequence in the first direction. The multiple common electrode units are disposed at intersections of the multiple scan lines and the multiple common-voltage signal lines respectively. Common electrode units in a same column are all electrically coupled with a same common-voltage signal line. Common electrode units in a same row are all electrically coupled with a same second scan line.Type: GrantFiled: December 29, 2022Date of Patent: February 27, 2024Assignee: HKC CORPORATION LIMITEDInventors: Mancheng Zhou, Yuanping Zhang, Rongrong Li
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Patent number: 11907427Abstract: In at least some implementations, a screen assembly, includes a screen, an internal structure, an isolating material and an actuator. The screen has an outer surface and an input area, and the internal structure is behind the outer surface and defines part of a chamber behind the input area. The isolating material is within the chamber, and the actuator is behind the screen and arranged to provide haptic output to the input area. The isolating material damps the haptic output to reduce transmission of the haptic output to portions of the screen outside of the input area.Type: GrantFiled: August 31, 2022Date of Patent: February 20, 2024Assignee: FCA US LLCInventors: Ross S Maunders, Mark E Stout, II
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Patent number: 11893949Abstract: When binary pixel data is written to a pixel circuit, of an H-level (3V) and a L-level (0V), a voltage of the level indicating the binary pixel data is held at a first node, and a voltage of the inverted level thereof is held at a second node. The first and second nodes are connected to a third node via N-channel transistors, respectively, and first and second selection control signals are supplied to gate terminals of the transistors, respectively. Voltage levels of the first and second selection control signals are periodically switched between 5V indicating the H-level and 0V indicating the L-level in a mutually inverted manner. As a result, the voltage of the first node and the voltage of the second node are alternately selected and applied to a pixel electrode of a display element.Type: GrantFiled: May 5, 2023Date of Patent: February 6, 2024Assignee: Sharp Display Technology CorporationInventors: Yasushi Sasaki, Yuhichiroh Murakami, Shuji Nishi, Takahiro Yamaguchi
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Patent number: 11886049Abstract: An optical path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed below the second substrate; and a light conversion unit disposed between the first electrode and the second electrode, wherein: the light conversion unit includes a partition wall portion, an accommodation portion, and a base portion; a light converting material including a dispersion liquid, light converting particles, and a dispersing agent is arranged in the accommodation portion; and the dispersing agent includes a nonionic dispersing agent.Type: GrantFiled: August 6, 2021Date of Patent: January 30, 2024Assignee: LG INNOTEK CO., LTD.Inventors: Mun Yeong Son, Jin Mi Noh, Hyeon Ji Hong, Byung Sook Kim
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Patent number: 11880238Abstract: Various configurations of an electronic display, and devices incorporating the display, are provided. The display may have multiple portions connected along one or more axes, lines, points, or other connecting areas. The portions are movable about the connections. In various configurations, the display portions emulate different media and/or communication and computing devices. Two or more of the display devices may be coupled in an array.Type: GrantFiled: January 9, 2023Date of Patent: January 23, 2024Assignee: CFPH, LLCInventor: Gregory P. Manning
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Patent number: 11882264Abstract: An autostereoscopic device and a method for generating an autostereoscopic image are disclosed. The device includes a substrate comprising a plurality of electrodes, a first image-forming layer, a light-transmissive layer, and a second image-forming layer. The first and second image-forming layers comprise a plurality of microcapsules or microcells. Each of the microcapsules or microcells comprises a dispersion of electrophoretic particles.Type: GrantFiled: March 29, 2023Date of Patent: January 23, 2024Assignee: E Ink CorporationInventor: Stephen J. Telfer
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Patent number: 11874436Abstract: The optical device 1 according to the present disclosure includes substrates 10 provided opposite to each other, a partition wall 20 formed between opposing faces of the substrates 10 and separating adjacent spaces, and a fluid 30 filled in each space 20b separated by the partition wall and containing an electric field control material, wherein the optical device further includes, between at least one of the substrates 10 and the partition wall 20, a fine uneven layer 40 having fine uneven shapes and a conductive layer 50 formed according to a shape of the fine uneven layer.Type: GrantFiled: June 4, 2020Date of Patent: January 16, 2024Assignee: Dexerials CorporationInventors: Hiroshi Tazawa, Kazuhiko Noda, Kyoko Sakurai, Shunichi Kajiya
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Patent number: 11874580Abstract: An electrophoretic display including a low-modulus adhesive foam. The electrophoretic display additionally includes a conductive integrated barrier layer including a light-transmissive electrode and a moisture barrier. In some embodiments, the resulting electrophoretic display may include touch sensing, a front light, color, and a digitizing layer to record interactions with a stylus. In some embodiments, the display includes a color filter array.Type: GrantFiled: October 26, 2022Date of Patent: January 16, 2024Assignee: E Ink CorporationInventors: Keisuke Hashimoto, Kenji Nakazawa, Bamboo Tsai, Yung-Sheng Chang, JiaJiun Yeh, Hsintao Huang
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Patent number: 11869447Abstract: A light emitting display device includes a display panel configured to display an image, and a data driver including a panel driving circuit and a panel sensing circuit, the panel driving circuit configured to drive the display panel, and the panel sensing circuit configured to sense the display panel. The data driver pre-charges a reference line of the display panel based on a voltage output from at least one of data voltage output circuits included in the panel driving circuit.Type: GrantFiled: December 27, 2021Date of Patent: January 9, 2024Assignee: LG Display Co., Ltd.Inventors: Jae Ik Yoo, Jae Yoon Bae, Seok Hyun Hong
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Patent number: 11862073Abstract: A display device includes a driving controller which outputs the output image signal corresponding to the input image signal when the first display area is driven, outputs the output image signal corresponding to a first bias signal when the boundary area is driven, and outputs the output image signal corresponding to a second bias signal different from the first bias signal when the non-boundary area is driven.Type: GrantFiled: October 26, 2022Date of Patent: January 2, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Changnoh Yoon, Sangan Kwon, Soon-Dong Kim, Taehoon Kim
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Patent number: 11860501Abstract: An optical switch includes a plurality of micro-grooves, a micro-fluid disposed in each micro-groove of the plurality of micro-grooves, and a driving electrode disposed corresponding to the micro-fluid in each micro-groove. The driving electrode is configured to provide a voltage to a corresponding micro-fluid to control light transmittance of a region where the micro-fluid is located.Type: GrantFiled: November 29, 2019Date of Patent: January 2, 2024Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xianqin Meng, Xiandong Meng, Wei Wang, Xiaochuan Chen
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Patent number: 11862122Abstract: The disclosure provides a display device and another display device. The display device includes a display panel. The display panel has a functional display area. The functional display area includes a pixel. The pixel includes a white pixel and multiple display pixels. The display pixels surround at least a part of the white pixel, and the white pixel includes a pixel electrode. The another display device includes another display panel. The another display panel has a functional display area, and the functional display area includes a pixel and a signal line. The pixel includes a white pixel and multiple display pixels. The signal line includes a branch, and the branch is electrically connected to one of the display pixels. The display device and the another display device of the disclosure is capable of reducing the problem of diffraction or having a better optical sensing effect.Type: GrantFiled: May 25, 2022Date of Patent: January 2, 2024Assignee: Innolux CorporationInventors: Chia-Hao Tsai, Ming-Jou Tai, Yi-Shiuan Cherng, Yu-Shih Tsou, You-Cheng Lu, Yung-Hsun Wu
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Patent number: 11846863Abstract: A system for simplified driving of electrophoretic media using a positive and a negative voltage source, where the voltage sources have different magnitudes, and a controller that cycles the top electrode between the two voltage sources and ground while coordinating driving at least two drive electrodes opposed to the top electrode. The resulting system can achieve roughly the same color states as compared to supplying each drive electrode with six independent drive levels and ground. Thus, the system simplifies the required electronics with only marginal loss in color gamut. The system is particularly useful for addressing an electrophoretic medium including four sets of different particles, e.g., wherein three of the particles are colored and subtractive and one of the particles is light-scattering.Type: GrantFiled: September 13, 2022Date of Patent: December 19, 2023Assignee: E Ink CorporationInventors: Stephen J. Telfer, Crystal Nguyen, Amit Deliwala, Kosta Ladavac, Christopher L. Hoogeboom
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Patent number: 11835835Abstract: An electro-optic device comprising electrophoretic medium including a dispersion of a plurality of particles in a fluid configured to migrate within the fluid in a direction responsive to an applied electric field. The plurality of particles include a first type of particles having a first charge of a first charge polarity, a second type of particles having a second charge of a second charge polarity, and a third type of particles having a third charge of the second charge polarity. The first charge polarity is opposite to the second charge polarity, and the third type of particles are configured to migrate within the fluid in a direction responsive to an applied magnetic field gradient.Type: GrantFiled: October 28, 2022Date of Patent: December 5, 2023Assignee: E Ink CorporationInventors: Michael D. McCreary, Richard J. Paolini, Jr., Stephen J. Telfer, Samantha Morrill
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Patent number: 11830449Abstract: An electro-optic display includes a display stack having a layer of electro-optic material between a common electrode and an array of pixel electrodes, each associated with a display pixel. A display controller circuit is in electrical communication with the display stack, and is capable of applying waveforms to each display pixel by applying one or more time-dependent voltages between the common electrode and each pixel electrode. A temperature sensor in communication with the display controller circuit is positioned proximate to the display stack. A first plurality of look-up tables includes waveform shape data representing a plurality of shapes of waveforms the display controller circuit is capable of applying to each display pixel, and a second plurality of look-up tables includes voltage amplitude data representing a plurality of voltage amplitudes the display controller circuit is capable of applying to each display pixel to transition its optical state.Type: GrantFiled: February 28, 2023Date of Patent: November 28, 2023Assignee: E INK CORPORATIONInventor: Craig Lin
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Patent number: 11809056Abstract: The present disclosure relates to a transmittance-variable device, a driving method thereof, a method for improving a light shielding ratio, and a use thereof. In some embodiments, a transmittance-variable device includes a transmittance-variable film capable of being switched between a transparent mode and a black mode depending on application of a voltage signal, and a power source for applying a voltage signal such that the intensity of the voltage signal decreases with time to implement the black mode, wherein the transmittance-variable film includes a first electrode substrate, an electrophoretic layer, and a second electrode substrate sequentially arranged. The transmittance-variable device can exhibit an excellent light shielding ratio in the black mode after driving with a voltage signal, and such a transmittance-variable device can be usefully used in a smart window.Type: GrantFiled: November 2, 2018Date of Patent: November 7, 2023Inventors: Young Sik Yoon, Tae Gyun Kwon, Moon Soo Park
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Patent number: 11783790Abstract: A display substrate includes a first substrate, a microcup structure layer, an electrophoretic liquid and a second substrate. The first substrate includes a pixel electrode layer which includes a plurality of pixel electrodes. The microcup structure layer is disposed on a side of the first substrate. The microcup structure layer includes a plurality of microcups, each microcup has a first opening and a second opening opposite to the first opening, the first opening is closer to the pixel electrode layer than the second opening, a size of the first opening being greater than a size of the second opening. The electrophoretic fluid is filled in the plurality of microcups, and the electrophoretic fluid is incorporated with charged particles. The second substrate is disposed on a side, away from the first substrate, of the microcup structure layer with the electrophoretic fluid, and the second substrate includes a common electrode layer.Type: GrantFiled: July 17, 2019Date of Patent: October 10, 2023Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Zhe Wang, Qingqing Ma, Chao Tian, Rui Xu, Shuo Li, Min Wang, Xiang Yuan, Linyu Li, Haizhou Ren, Haiyang Tian, Kaifeng Wang, Yinan Gao, Guojie Qin
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Patent number: 11756494Abstract: Methods for efficiently clearing previous state information when driving a multi-particle color electrophoretic medium, for example, wherein at least two of the particles are colored and subtractive and at least one of the particles is scattering. Typically, such a system includes a white particle and cyan, yellow, and magenta subtractive primary colored particles. The clearing pulse may include two different portions of alternating impulses and the overall waveform may be DC balanced.Type: GrantFiled: October 29, 2021Date of Patent: September 12, 2023Assignee: E Ink CorporationInventors: Irina Paykin, Stephen J. Telfer, Kenneth R. Crounse
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Patent number: 11747703Abstract: The application provides a method for driving a color electronic paper, including: according to an image to be displayed, applying a first driving signal to a first electrode on a to-display-white microcapsule and a second driving signal to a first electrode on a to-display-black microcapsule. The first driving signal includes: a first sub-driving signal applied to the first electrode on the to-display-white microcapsule in display phase; and the first sub-driving signal is configured to drive a white particle in the to-display-white microcapsule to be closer to a display side than a black particle and a colored particle. The second driving signal comprises: a second sub-driving signal applied to the first electrode on the to-display-black microcapsule in display phase, and the second sub-driving signal is configured to drive the black particle in the to-display-black microcapsule to be closer to the display side than the white particle and the colored particle.Type: GrantFiled: February 2, 2021Date of Patent: September 5, 2023Assignees: Chongqing BOE Smart Electronics System Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Shengbo Zhang, Lichun Chen, Qiangeng Cheng
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Patent number: 11740530Abstract: A variable transmission electro-optic medium includes an encapsulated bistable dispersion containing a plurality of electrically charged particles and a fluid, the charged particles being movable by application of an electric field and capable of being switched between an open state and a closed state. The plurality of electrically charged particles may include a first set of charged particles and a second set of charged particles, such that a color of the first set of charged particles is the same as a color of the second set of charged particles, and the first set of charged particles has a polarity that is opposite to a polarity of the second set of charged particles.Type: GrantFiled: November 13, 2020Date of Patent: August 29, 2023Assignee: E Ink CorporationInventors: Stephen J. Telfer, Thomas H. Whitesides
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Patent number: 11733547Abstract: An active optical element includes an active material encased between a first substrate and a second substrate, first electrode(s), second electrodes employed as a ground plane, and means for applying and modulating additional impedance between an electrical ground and the second electrodes. The second electrodes divide the active optical element into segments. The first electrode(s) are driven at given voltage(s). At least one of the second electrodes corresponding to at least one of the segments is selectively connected to an electrical ground without any additional impedance, while applying and modulating the additional impedance between the electrical ground and a remainder of the plurality of second electrodes. The active material in the at least one of the plurality of segments is controlled by a potential difference generated between the given voltage(s) and the electrical ground to produce a given optical power.Type: GrantFiled: September 27, 2022Date of Patent: August 22, 2023Assignee: Pixieray OyInventors: Klaus Melakari, Ari Pitkänen
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Patent number: 11736006Abstract: A system may include a pre-charge stage and a voltage converter. The pre-charge stage may include a controller circuit configured to generate a control voltage and a current regulator electrically coupled to the controller circuit and configured to generate a first voltage, a second voltage, and a third voltage. The voltage converter may include a capacitor, a hold capacitor, and switches. The capacitor may include a first plate and a voltage on the first plate may be equal to the first voltage. The capacitor may include a second plate and a voltage on the second plate may be equal to the second voltage. The hold capacitor may include a plate and a voltage on the plate may be equal to the third voltage. The current regulator may be configured to regulate a current on the switches during accumulation of an initial charge on the capacitor and the hold capacitor.Type: GrantFiled: July 27, 2022Date of Patent: August 22, 2023Assignee: SMART PRONG TECHNOLOGIES, INC.Inventors: Randall Sandusky, Neaz Farooqi
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Patent number: 11733580Abstract: An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.Type: GrantFiled: April 28, 2021Date of Patent: August 22, 2023Assignee: E Ink CorporationInventors: Stephen J. Telfer, Richard J. Paolini, Jr., Sunil Krishna Sainis, Randal M. Hill, Isaac W. Moran, Lee Yezek, Alain Bouchard, William Vetterling, George G. Harris, Hywel Morgan, Luke Slominski, Jay William Anseth, Jennifer M. Morrison, Craig A. Herb
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Patent number: 11696395Abstract: The present disclosure provides a wiring structure, a display substrate and a display device, and belongs to the field of display technology. The wiring structure of the present disclosure comprises a body portion provided with hollow patterns; the body portion has a first side and a second side which are provided opposite to each other along an extending direction of the wiring structure, and both the first and second sides are wavy; the body portion comprises a plurality of conductive elements sequentially connected along the extending direction of the wiring structure; and in each conductive element, a length of a protruding portion on the first side in the extending direction of the wiring structure is different from that of a protruding portion on the second side in the extending direction of the wiring structure.Type: GrantFiled: July 15, 2021Date of Patent: July 4, 2023Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Zhifeng Zhan, Peng Huang, Yanxin Wang, Shuquan Yang, Wei Wang
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Patent number: 11694748Abstract: A method, a circuit, and a system for reading memory cells. The method may include: applying a first voltage with a first polarity to a plurality of the memory cells; applying a second voltage with a second polarity to one or more of said plurality of the memory cells; applying at least a third voltage with the first polarity to one or more of said plurality of the memory cells; detecting electrical responses of memory cells to the first voltage, the second voltage, and the third voltage; and determining a logic state of respective memory cells based on the electrical responses of the memory cells to the first voltage, the second voltage, and the third voltage.Type: GrantFiled: April 8, 2022Date of Patent: July 4, 2023Assignee: Micron Technology, Inc.Inventors: Umberto Di Vincenzo, Riccardo Muzzetto, Ferdinando Bedeschi
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Patent number: 11693289Abstract: An electrokinetic device is configured as a dynamic lens cover and/or filter for an imaging assembly, e.g., of a mobile device, to selectively allow electromagnetic radiation to pass through a lens of the imaging assembly when the dynamic lens cover is in a first operating state or to prevent electromagnetic radiation from reaching the lens of the imaging assembly when the dynamic lens cover is in a second operating state. The electrokinetic device includes transparent first and second substrates, and a compaction trench surrounding the lens of the imaging assembly. The compaction trench stores pigment when the dynamic lens cover is in the first operating state. In the second operating state pigment is dispersed within a carrier fluid between the first and second substrates.Type: GrantFiled: September 11, 2022Date of Patent: July 4, 2023Inventors: James E. Abbott, Timothy Koch, Cassady Roop, Palitha Wickramanayake
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Patent number: 11688357Abstract: The present invention provides improved driving methods for four particle electrophoretic displays that improves the performance of such displays when they are deployed in low temperature environments and the displays are required to be updated when positioned vertically (i.e., the driving electric fields are substantially perpendicular to the direction of Earth's gravity). Methods are provided for displaying each of the colors at each pixel, as desired, with minimal interference (contamination) from the other particles.Type: GrantFiled: April 28, 2022Date of Patent: June 27, 2023Assignee: E Ink California, LLCInventors: Ning-Wei Jan, Chen-Kai Chiu, Feng-Shou Lin, Chih-Yu Cheng
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Patent number: 11689527Abstract: A foldable device includes: a display; a touch panel configured to detect a touch input; a sensing interface configured to detect an angle of the foldable device; and a controller configured to activate the display unit when the angle detected by the sensing unit as the foldable device is unfolded is equal to or greater than a first angle, and activate the touch panel when the angle detected by the sensing unit is equal to or greater than a second angle.Type: GrantFiled: May 29, 2020Date of Patent: June 27, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Dae-myung Kim
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Patent number: 11662641Abstract: A display panel includes at least one first electrode, a plurality of second electrodes opposite to the at least one first electrode, and a plurality of microcapsules disposed between the at least one first electrode and the plurality of microcapsules. Each microcapsule includes a plurality of charged first particles of a first color and a plurality of charged light-emitting particles. Charge polarity of the plurality of first particles is opposite to charge polarity of the plurality of light-emitting particles, and the first color is different from a color of light emitted by the plurality of light-emitting particles.Type: GrantFiled: August 14, 2020Date of Patent: May 30, 2023Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventor: Dongling Sun
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Patent number: 11657774Abstract: An apparatus for driving an electro-optic display may comprise a first switch designed to supply a voltage to the electro-optic display during a first driving phase, a second switch designed to control the voltage during a second driving phase and a resistor coupled to the first and second switches for controlling the rate of decay of the voltage during the second driving phase.Type: GrantFiled: September 19, 2022Date of Patent: May 23, 2023Assignee: E Ink CorporationInventors: Karl Raymond Amundson, Teck Ping Sim
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Patent number: 11657746Abstract: The invention more particularly relates to a method and device for controlling a segmented electrophoretic display. Such displays, preferably covered by the invention, comprise a layer (or a film) of microcapsules containing colored particles suspended in a fluid or a gas, the same layer being sandwiched between two electrodes: at least one first electrode having the shape of the segment to be displayed a second transparent electrode made by a conductive layer of indium tin oxide (ITO) for example. Alternative electrodes based on a thin film of carbon nanostructures, silver or copper wires can also be used.Type: GrantFiled: September 23, 2021Date of Patent: May 23, 2023Assignee: THALES DIS FRANCE SASInventor: Stephane Touvet
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Patent number: 11657773Abstract: 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: GrantFiled: August 30, 2022Date of Patent: May 23, 2023Assignee: E Ink CorporationInventors: Karl Raymond Amundson, Matthew J. Aprea, Kenneth R. Crounse, Demetrious Mark Harrington, Jason Lin, Theodore A. Sjodin, Chia-Chen Su
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Patent number: 11620927Abstract: A display device includes a scale factor provider, a grayscale converter, and pixels. The scale factor provider calculates an n-th scale factor based on n-th input grayscales received during an n-th frame period. The grayscale converter calculates (n+p)th output grayscales by applying the n-th scale factor to (n+p)th input grayscales received during an (n+p)th frame period in a first mode. The pixels output light to display an image based on the (n+p)th output grayscales, where n is an integer greater than 0 and p is an integer greater than 1.Type: GrantFiled: August 30, 2021Date of Patent: April 4, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Si Duk Sung, Dae Sik Lee, Sang Hyun Lee, Myeong Su Kim
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Patent number: 11580920Abstract: The present invention provides improved driving methods for four particle electrophoretic displays. The driving methods improve the color state performance when a first pixel is displaying a mixed state of a first highly-charged particle and a second lower-charged particle of the opposite polarity, while a neighboring pixel is displaying a state of a second highly-charged particle having the opposite polarity to the first highly-charged particle. The particles can be, for example, all reflective or one type of particle can be partially light transmissive.Type: GrantFiled: May 24, 2022Date of Patent: February 14, 2023Assignee: E Ink California, LLCInventors: Chih-Yu Cheng, Craig Lin, Ning-Wei Jan, Chen-Kai Chiu, Feng-Shou Lin
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Patent number: 11567387Abstract: A peeping prevention structure, a display device and a display method are provided. The peeping prevention structure includes: a first electrode and a second electrode opposite to each other; a plurality of transparent columnar cavities between the first electrode and the second electrode, wherein a plurality of opening regions are defined between the plurality of transparent columnar cavities, and each of the plurality of transparent columnar cavities is filled with charged light-absorbing particles; wherein, the charged light-absorbing particles are configured to, under a control of an electric field between the first electrode and the second electrode, be uniformly diffused in the transparent columnar cavity or be concentrated at an end of the transparent columnar cavity.Type: GrantFiled: April 19, 2019Date of Patent: January 31, 2023Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Lianjie Qu, Bingqiang Gui, Yonglian Qi, Hebin Zhao, Yun Qiu
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Patent number: 11569312Abstract: An organic light-emitting display comprises a substrate having a plurality of subpixels arranged in a row direction and a column direction crossing the row direction; a plurality of first electrodes respectively allocated to the plurality of subpixels and comprising a first sub-electrode arranged in a (3n?2) column, a second sub-electrode arranged in a (3n?1) column, and a third sub-electrode arranged in a 3n column (where n is a natural number of 1 or more); and a bank having an opening exposing the plurality of first electrodes, wherein the first sub-electrode has a convex part protruded toward the third sub-electrode that has a concave part corresponding to the convex part.Type: GrantFiled: December 15, 2019Date of Patent: January 31, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Seonghyun Kim, Hojin Ryu, Jaeki Lee, Youngmu Oh, Suphil Kim, Jonghoon Yeo, Jihoon Lee, Changyong Gong
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Patent number: 11538875Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate, a pixel defining layer, and a first electrode layer between the base substrate and the pixel defining layer. The pixel defining layer defines a plurality of sub-pixels on the base substrate, the first electrode layer comprises a plurality of first electrodes, and the plurality of first electrodes being separated from each other by gaps, and an orthographic projection of the pixel defining layer on the base substrate covers an orthographic projection of the gap on the base substrate.Type: GrantFiled: November 13, 2018Date of Patent: December 27, 2022Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.Inventors: Can Wang, Can Zhang
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Patent number: 11520202Abstract: There are provided methods for driving an electro-optic display having a plurality of display pixels, a such method includes applying a first waveform chosen from a first set of waveforms for black-to-white and white-to-white transitions if a pixel is determined to display color, and applying a second waveform chosen from a second set of waveforms for black-to-white and white-to-white transitions if a pixel is determined to display a grayscale image.Type: GrantFiled: June 4, 2021Date of Patent: December 6, 2022Assignee: E Ink CorporationInventors: Sarah Paydavosi, Yuval Ben-Dov