Intensity Or Color Driving Control (e.g., Gray Scale) Patents (Class 345/690)
  • Patent number: 11404014
    Abstract: An array substrate, and a driving method and driving device thereof, in the field of display technology. A display device includes an array substrate, including a plurality of pixel units. Each pixel unit includes a first sub-pixel and a second sub-pixel of the same color, the first sub-pixel includes a first pixel electrode (061) and a first common electrode (081), and the second sub-pixel includes a second pixel electrode (062) and a second common electrode (082). In a first stage, a voltage between the first pixel electrode (061) and the first common electrode (081) is greater than a voltage between the second pixel electrode (062) and the second common electrode (082), which optimizes and solves the problem of low fineness of the display picture, and improves the fineness of the display picture.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: August 2, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Pan Li, Yongda Ma
  • Patent number: 11403985
    Abstract: A display control device includes: an input part receiving an input signal including gray levels of the first color, the second color and the third color constituting a color for each of the plurality of pixels; a selection part selecting at least one of the plurality of pixels as a selection pixel and other of the plurality of pixels as a non-selection pixel; and an output part outputting an output signal controlling luminances of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel based on the input signal, wherein at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel of the non-selection pixel is controlled to have a luminance of 0 according to the output signal, and wherein the fourth sub-pixel of the selection pixel is controlled to have a luminance of 0 according to the output signal.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: August 2, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Shinji Takasugi, Hyun-Jong Ji
  • Patent number: 11402700
    Abstract: A display panel, which includes a display area, a transition area, and a blind hole area. The transition area is provided with a plurality of pixel units, and each of the plurality of pixel units comprises a blue sub-pixel, a red sub-pixel, and a green sub-pixel; wherein in the transition area, an aperture ratio of each of the red sub-pixels and an aperture ratio of each of the green sub-pixels are both less than an aperture ratio of each of the blue sub-pixels.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: August 2, 2022
    Inventor: Guizhi Ma
  • Patent number: 11404011
    Abstract: A scan-type display apparatus includes a light emitting module, a display module, a control module and a driver module. The light emitting module includes an LED array having a common anode configuration. The control module generates a synchronization control (SC) signal. The driver module generates a plurality of switching signals and an image refresh signal based on the SC signal. The switching signals cause the LED array to emit light in a line scan manner. The image refresh signal is related to one of the switching signals that corresponds to a last line of the line scan in each line scan cycle, and is further related to refreshing of images on a display constituted by the light emitting module and the display module.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: August 2, 2022
    Assignee: MACROBLOCK, INC.
    Inventors: Yi-Ta Wu, Chun-Yi Li, Hung-I Cheng, Ping-Kai Huang
  • Patent number: 11404524
    Abstract: A display panel, a display module, and an electronic device are provided. The display panel includes a third metal layer including a signal line, and a conductive layer including a connection portion. The connection portion is connected to the signal line. A pixel definition layer is disposed on the conductive layer, and the pixel definition layer includes a first opening region and a second opening region. A cathode is disposed in the second opening region and disposed on the pixel definition layer. The cathode is connected to the connection portion.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: August 2, 2022
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Shiqiang Huang, Xing Ming, Qi Cao
  • Patent number: 11402687
    Abstract: Aspects of the subject technology relate to an electronic device with a display. The display includes a first array of light-emitting diodes of a backlight unit to generate backlight for the display with each LED including an anode and a cathode. A first switch selectively couples a power supply voltage to a common anode of the first array of LEDs to control illumination of the first array of LEDs. A first discharge switch selectively couples a first voltage level to the common anode of the first array of LEDs to discharge the common anode to prevent an undesired current path through the first array of LEDs and associated undesired illumination.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: August 2, 2022
    Assignee: Apple Inc.
    Inventors: Vehbi Calayir, James E. Brown, Bret Rothenberg
  • Patent number: 11398503
    Abstract: A display device, comprising: a first pixel row including a first pixel electrode and a second pixel electrode that are arranged in a first direction; a second pixel row; a third pixel row; a first source line and a second source line that extend in a second direction between the first pixel electrode and the second pixel electrode; a first gate line that extends in the first direction between the first pixel row and the second pixel row; a second gate line that extends in the first direction between the second pixel row and the third pixel row; a first end connection wiring that connects the first gate line to the second gate line at an end portion of the second pixel row; and one or more first cross connection wirings that transverse the second pixel row and connect the first gate line to the second gate line.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: July 26, 2022
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 11393373
    Abstract: A gate drive circuit includes: a plurality of cascaded shift register units, wherein each of the shift register units is connected to pixel circuits in a display panel; an output module of each shift register unit includes: a drive transistor for driving an output terminal to output a gate drive signal, and the output terminal is configured to provide the gate drive signal to the pixel circuits connected to the shift register unit provided with the output terminal; each pixel circuit is further connected to a first power supply terminal, and each pixel circuit is configured to emit light under control of the gate drive signal from the corresponding shift register unit and a first power supply signal from the first power supply terminal; and a width-to-length ratio of a conductive channel of each drive transistor is in negative correlation with a target distance.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: July 19, 2022
    Assignees: Chengdu BOE Optoelectronics Technology Co., LTD., BOE Technology Group Co., LTD.
    Inventors: Yao Huang, Weiyun Huang, Chao Zeng
  • Patent number: 11393391
    Abstract: The present disclosure describes a drive control circuit, a drive control chip, an integrated packaged device, a display system, and a sparse drive method. The drive control circuit includes a data input end, a clock input end, a decoding and control unit, a decoding and gating unit, at least two drive sources, and at least two drive signal output ends. A first input end of the decoding and control unit is electrically connected to the data input end, a second input end is electrically connected to the clock input end, a control input end is electrically connected to a control output end, an address input end is electrically connected to an address output end.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: July 19, 2022
    Assignee: Faith Billion Technology Development Limited
    Inventor: Zengxiang Lu
  • Patent number: 11392005
    Abstract: A display device capable of improving image quality is provided. The display device includes a plurality of capacitors, a plurality of transistors, and a display element in a pixel. The plurality of capacitors are connected in series through a wiring, and one of the plurality of transistors is electrically connected to one electrode of the plurality of capacitors connected in series, the other electrode thereof, and the wiring. The display element can operate in accordance with the sum of a plurality of pieces of input data, so that image correction such as image upconversion, HDR display, or improvement in the luminance can be performed.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: July 19, 2022
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Susumu Kawashima, Naoto Kusumoto
  • Patent number: 11393375
    Abstract: A source driver and a polarity inversion control circuit are provided. The source driver includes a plurality of channel pairs and the polarity inversion control circuit. The polarity inversion control circuit includes a signal generating circuit and a routing circuit. The signal generating circuit generates a polarity control signal. The routing circuit outputs a plurality of switching control signals corresponding to the polarity control signal to a plurality of output switching circuits of the channel pairs. The routing circuit changes the correspondence between the polarity control signal and the switching control signals according to a polarity inversion configuration signal.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 19, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Siangwei Wang, Hung-Yu Huang
  • Patent number: 11393392
    Abstract: A display device includes a display panel including a plurality of panel blocks, a block load calculator which calculates block loads of the panel blocks based on an input image data and determines a maximum block load among the block loads, a block load comparing part which generates a first output image data based on the input image data when the maximum block load is less than a critical block load, and a first load controller which generates a first power control curve and generates a second output image data based on the input image data when the maximum block load is greater than or equal to the critical block load.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eunjin Choi, Wonjin Seo, Kihyun Pyun
  • Patent number: 11393413
    Abstract: Disclosed are an image brightness adjustment method, an image brightness adjustment device, an image brightness adjustment system and a computer-readable storage medium. The method includes the steps of: subsequent to receiving an image signal to be displayed, performing noise reduction processing on the image signal to be displayed, and obtaining the image signal to be displayed after noise reduction; comparing the image signal to be displayed before noise reduction with the image signal to be displayed after noise reduction, and obtaining a signal-to-noise ratio; calculating a compensation intensity coefficient according to the signal-to-noise ratio, and determining an attribute value of each region of an image to be displayed; and adjusting a brightness of the image to be displayed according to the compensation intensity coefficient and the attribute value.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: July 19, 2022
    Assignee: SHENZHEN SKYWORTH-RGB ELECTRONIC CO., LTD.
    Inventor: Zhilin Xiao
  • Patent number: 11393390
    Abstract: An electronic device is provided in this disclosure. The electronic device includes a display panel and a processor. The processor is electrically connected to the display panel. The processor receives image data and calculates a display area occupied by the image data on the display panel according to the image data. Then, the processor adjusts a backlight current value of the display panel according to the display area and an area-current relationship, to adjust the brightness of the display panel. In this way, the brightness of the display panel is consistent when the display panel displays images of different areas. The disclosure also provides a brightness adjustment method of an electronic device.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: July 19, 2022
    Assignee: ASUSTEK COMPUTER INC.
    Inventors: Chia-Feng Yang, Yi-Ching Chen, Chia-Lei Yu
  • Patent number: 11394948
    Abstract: The display apparatus includes a display; a communication interface configured to communicate with a user terminal; and a controller configured to generate a multi-view image including a plurality of contents by performing an image quality improvement process based on source image signals received from a plurality of sources, and to control the multi-view image to be displayed on the display.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sunbum Han, Daesung Lim, Bumkwi Choi
  • Patent number: 11393371
    Abstract: Systems and methods are disclosed herein for monitoring light emissions in electronic devices. The disclosed techniques herein provide for determining a display duration of display devices for a user. Light emission profiles for each of the display devices are determined. A cumulative emissions exposure is determined that is based on the light emission profiles for the display devices and the display duration of the display devices for the user. A determination is made whether the cumulative emissions exposure exceeds a light emission exposure limit set for the user. In a positive determination, an instruction is transmitted to the display devices for execution of a remedial action based on predefined rules.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: July 19, 2022
    Assignee: Rovi Guides, Inc.
    Inventors: Siddhartha Pande, Madhusudhan Srinivasan
  • Patent number: 11393398
    Abstract: The present disclosure allows removal of the influence by an unstable pixel power voltage by generating or selectively using a gamma voltage according to a gamma reference voltage variable depending on the level of the pixel power voltage.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: July 19, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Dong Su Lee
  • Patent number: 11385734
    Abstract: A display device includes a first display panel including N input/output (I/O) pads [I/O1 to I/ON] at a first side of the display device. A first display driver is operatively connected to the N I/O pads of the first display panel at the first side of the display device. A second display panel includes the N I/O pads at the first side of the display device. I/O pads I/O1+M and I/ON?M are a same type of I/O pad for M=0 to M=P for the first display panel and the second display panel. A second display driver, having a same configuration as the first display driver is operatively connected to the N I/O pads of the second display panel at the first side of the display device. A hinge pivotably connects the first display panel to the second display panel.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: July 12, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Vasudha Gupta, Matthew D. Morris, Christopher Andrew Whitman
  • Patent number: 11380249
    Abstract: Provided is a display device including a display panel, a data driving circuit configured to drive a plurality of data lines, a scan driving circuit configured to drive a plurality of scan lines, and a driving controller configured to determine an operation mode based on an input signal, and configured to control the data driving circuit and the scan driving circuit in order to drive a first display region of the display panel at a first driving frequency and drive a second display region of the display panel at a second driving frequency while the operation mode is a multi-frequency mode, wherein the driving controller may change the operation mode to a compensation mode in which the second display region is periodically driven at the first driving frequency when the duration of the multi-frequency mode is greater than a reference time.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: July 5, 2022
    Inventors: Eun Sil Yun, Sangan Kwon, Soon-Dong Kim, Taehoon Kim, Bonghyun You, Changnoh Yoon
  • Patent number: 11379955
    Abstract: The present disclosure relates to an artificial intelligence (AI) system utilizing a machine learning algorithm, including deep learning and the like, and application thereof. In particular, an electronic device of the present disclosure comprises: a memory including at least one command; and a processor connected to the memory so as to control the electronic device, wherein, by executing the at least one command, the processor acquires an image, acquires a noise correction map for correction of noise of the image on the basis of configuration information of a camera having captured the image or brightness information of the image, and eliminates the noise of the image through the noise correction map. In particular, at least a part of an image processing method may use an artificial intelligence model having been acquired through learning according to at least one of a machine learning algorithm, a neural network algorithm, and a deep learning algorithm.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: July 5, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tejas Nair, Jaesung Lee, Tammy Lee
  • Patent number: 11380271
    Abstract: Disclosed are a backlight driving method, a display driving method, a drive device and a display device. The backlight driving method includes: receiving a frame of backlight data, wherein the frame of backlight data includes a plurality of first control signals which are respectively applied to the plurality of switching channels and serve as the switching control signals, and a plurality of second control signal groups respectively corresponding to the plurality of first control signals, each of the plurality of second control signal groups includes a plurality of second control signals which are respectively applied to the plurality of output channels and serve as the output control signals, and the plurality of first control signals are modulated non-constant width pulse signals respectively; and driving the backlight unit to emit light by using the plurality of first control signals and the plurality of second control signal groups.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: July 5, 2022
    Assignees: BOE MLED TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qibing Gu, Wei Hao, Rui Liu, Lingyun Shi, Wei Sun, Ming Chen, Hong Yang
  • Patent number: 11380241
    Abstract: A display device according to some embodiments includes a display panel including a plurality of pixels, a timing controller for correcting an input image signal, and for transmitting the input image to the display panel, a memory for storing model correction data for correcting a gray value, the model correction data corresponding to respective models of a plurality of timing controllers, and for storing image quality correction data for correcting a gamma deviation of the display panel, and a correction controller for generating final correction data by using the model correction data and the image quality correction data, and for transmitting the final correction data to the timing controller.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: July 5, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Gyu Kim, Hee Joon Kim, Si Hun Jang, Hoi Sik Moon
  • Patent number: 11379076
    Abstract: A touch display device, a data driving circuit, and a driving method are provided. The touch display device, the data driving circuit, and the driving method convert an image digital signal into an image analog signal in response to a gamma reference voltage which is applied to the touch electrodes arranged in the display panel and which is modulated in synchronization with a first touch electrode driving signal swinging with a first amplitude and output a data signal corresponding to the converted image analog signal to the data lines. Accordingly, it is possible to effectively simultaneously perform display and touch sensing.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: July 5, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: HoonBae Kim, CheolSe Kim, SungChul Kim, SunYeop Kim, Seongkyu Kang
  • Patent number: 11380282
    Abstract: A gamma voltage generating circuit includes N gamma voltage generating sub-circuits. Each gamma voltage generating sub-circuit includes a resistive voltage divider circuit and a plurality of gamma reference voltage output terminals. Each resistive voltage divider circuit includes a plurality of resistors connected in series, and any two resistive voltage divider circuits have a same resistance ratio of the plurality of resistors. The N gamma voltage generating sub-circuits include a first gamma voltage generating sub-circuit. The first gamma voltage generating sub-circuit further includes a gamma voltage generation circuit. Output terminals of the gamma voltage generation circuit are electrically connected to a highest gamma reference voltage output terminal and a lowest gamma reference voltage output terminal, respectively.
    Type: Grant
    Filed: December 25, 2019
    Date of Patent: July 5, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Wenbo Wang
  • Patent number: 11373586
    Abstract: A display panel, a pixel circuit, and a display device are disclosed. The display panel includes sub-pixels and a driver driving the sub-pixels. Each sub-pixel includes: an emission element; a first transistor configured to generate a driving current; a constant current control circuit configured to receive a reference voltage and a bias voltage for setting a value of the driving current and including a first capacitor configured to store a first compensation voltage generated by adding a threshold voltage of the first transistor to a difference between the bias voltage and the reference voltage; and a pulse width control circuit configured to receive a data voltage used to determine an emission duration of the emission element and including a second transistor configured to control a pulse width of the driving current according to the data voltage and a second capacitor configured to store a second compensation voltage corresponding to a threshold voltage of the second transistor.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: June 28, 2022
    Assignees: SAMSUNG DISPLAY CO., LTD., KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP
    Inventors: Minjae Jeong, Joonho Lee, Keechan Park, Kyunghoon Chung, Chongchul Chai
  • Patent number: 11373575
    Abstract: Systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: June 28, 2022
    Assignee: BAYLOR UNIVERSITY
    Inventors: Mitchell J. Bogdanowicz, Corey P. Carbonara, Michael F. Korpi, James M. DeFilippis, Gary B. Mandle
  • Patent number: 11367384
    Abstract: A display device and a driving method thereof are disclosed. The display device includes a subpixel including a light emitting unit including a first electrode, a second electrode, and a plurality of light emitting elements connected between the first electrode and the second electrode, and a driving transistor configured to supply a driving current to the light emitting unit; a detector electrically connected to the light emitting unit to detect a short circuit in the plurality of light emitting elements; and a blocking controller configured to control blocking of the driving current based on an output of the detector. Accordingly, power consumption of the display device may be improved.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: June 21, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gwang Teak Lee, Seong Sik Choi
  • Patent number: 11361707
    Abstract: A display driver has current reference units and current-generating units. Each current reference unit generates a reference current and scaling it to form a scaled reference current. Each current-generating unit generates an output current from one scaled reference current to drive a selected light emitter (LE) of a LE matrix over a time slice allocated for driving the selected LE. Each current-generating unit has a switching circuit modulating the scaled reference current according to a switching sequence to form output current pulses to drive a LE.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: June 14, 2022
    Assignee: DEEPSKY CORPORATION LIMITED
    Inventors: Laurent Collot, Wai Kin Cheng
  • Patent number: 11362167
    Abstract: The present disclosure provides a display substrate, including a substrate, a first power line on the substrate, a second power line, and a plurality of pixel groups, each of which includes a plurality of pixels arranged in a first direction, the plurality of pixel groups are arranged in a second direction parallel to an extending direction of the first power line, the second direction is different from and intersects with the first direction, each of the plurality of pixels includes a light emitting unit having a first electrode and a second electrode, the first electrode of the light emitting unit is coupled to the first power line through an additional resistor with an additional resistance, and the second electrode of the light emitting unit is coupled to the second power line through an equivalent resistor with an equivalent resistance.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: June 14, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xin Li, Lujiang Huangfu, Xing Fan
  • Patent number: 11361711
    Abstract: A pixel circuit, comprising: a compensation sub-circuit (30), and a storage sub-circuit (40). The compensation sub-circuit (30) is configured to adjust a potential of a second node (P2) based on a potential of a first node (P1) in response to a first control signal from a first control signal terminal (S1), and to adjust a potential of the control node (P3) based on a potential of a first terminal of a driving transistor (M0) in response to a second control signal from a second control signal terminal (S2). The storage sub-circuit (40) is configured to adjust the potential of the control node (P3) based on the potential of the second node (P2). The driving transistor (M0) is a N-type transistor.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: June 14, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Tian Dong
  • Patent number: 11355066
    Abstract: A power management driver and a display device having the power management driver are provided, including a first power supply configured to supply a first voltage to a first driving power terminal of a pixel through a power line during a sensing period, and supply a second voltage to the first driving power terminal of the pixel through the power line during a display period; a controller configured to control timing at which the first voltage is output and timing at which the second voltage is output during a transition period between the display period and the sensing period in response to a sensing control signal; and a fault detector configured to detect a fault in the power line based on a current flowing through an output terminal during the sensing period.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: June 7, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Sik Lee, Si Duk Sung, Sang Hyun Lee
  • Patent number: 11357083
    Abstract: A light-emitting substrate and a method of driving the same, a light-emitting module, and a display apparatus are provided. The light-emitting substrate has a plurality of light-emitting areas. The light-emitting substrate includes: a base, a plurality of light-emitting components, a plurality of first power supply voltage signal lines, and a plurality of first control circuits. The plurality of light-emitting components are disposed on the base. The plurality of first power supply voltage signal lines are disposed on the base and arranged at intervals. The plurality of first control circuits are disposed on the base. One light-emitting component is located in one light-emitting area. Each of the first control circuits is coupled to a first electrode of one light-emitting component, and each of first power supply voltage signal lines is coupled to at least two first control circuits.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: June 7, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wei Hao, Feifei Wang, Wengang Su, Rui Shi, Lingyun Shi, Haiwei Sun, Ming Chen, Xue Dong
  • Patent number: 11355073
    Abstract: The present disclosure provides a control circuit, a display apparatus, and a method for supplying power to a light source in a display apparatus. The control circuit includes a first power source, a second power source, and a control device. The first power source and the second power source are both coupled to the control device. The control device is configured to control a connection between the first power source and a light source and a connection between the second power source and the light source.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: June 7, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Dong Liu
  • Patent number: 11348545
    Abstract: Image quality degradation in a display device with two liquid crystal cells is reduced. For this purpose, as an image signal for a liquid crystal display panel in which a display image is generated by light passing through a rear liquid crystal cell and a front liquid crystal cell, an image processing unit generates a rear image signal for the rear liquid crystal cell and a rear image signal for the front liquid crystal cell. This image processing unit includes a gradation value conversion unit that performs a gradation value conversion on an input image signal so as to generate a rear image signal for the rear liquid crystal cell, and a limit processing unit that performs a process of limiting a value of the rear image signal output from the gradation value conversion unit to a predetermined limit value.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: May 31, 2022
    Assignee: SONY CORPORATION
    Inventors: Hiroaki Kimura, Harunobu Kamei
  • Patent number: 11348516
    Abstract: An AMOLED pixel driving circuit and a driving method are disclosed. The AMOLED pixel driving circuit adopts a 6T1C structure, wherein the thin-film transistor characteristic of the second thin film transistor is the same as that of the driving thin-film transistor, that is, the first thin-film transistor. Accordingly, the threshold voltage of the driving thin-film transistor can be compensated by the leakage current of the second thin-film transistor, so that the current flowing through the organic light emitting diode is stable, ensuring uniform brightness of the organic light emitting diode, and improving the display effect of the screen.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: May 31, 2022
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Peng Mao
  • Patent number: 11350067
    Abstract: A first image, a second image, and a third image generated by a camera that captures a screen at a first timing, a second timing, and a third timing are sequentially acquired. The projection states of a first projector and a second projector at the third timing are caused to be the same as the projection states of the first and second projectors at the first timing. The projection state of the first projector is caused to differ from the projection state of the second projector at least one of the first timing or the second timing. Whether or not the first projector needs to be adjusted is evaluated based on the first image, the second image, and the third image.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: May 31, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Susumu Ota
  • Patent number: 11348519
    Abstract: A display device includes pixels, and a power converter configured to receive a first power voltage and an external input voltage and provide a gamma voltage to a first output terminal. The power converter includes a target power voltage generator circuit configured to generate a target power voltage, a first gamma voltage generator circuit configured to generate a first gamma voltage, a second gamma voltage generator circuit configured to generate a second gamma voltage, a first gap controller configured to generate the second gamma voltage based on the first power voltage, a reference target power voltage, and a reference gamma voltage during a period in which a display mode, and a first selector configured to selectively output the first gamma voltage or the second gamma voltage according to the display mode.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: May 31, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Yang Uk Nam
  • Patent number: 11348495
    Abstract: An image display system for a vehicle includes a plurality of image display devices. Each of the image display devices diagnoses a failure of a self-circuit and outputs a diagnosis result. When one of the image display devices to display security requirement information is determined to be in failure based on the diagnosis result, the security requirement information is output to another of the image display devices determined to be normal.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 31, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shun Tomioka
  • Patent number: 11350133
    Abstract: A data generation method is for generating video data that covers a second luminance dynamic range wider than a first luminance dynamic range and has reproduction compatibility with a first device that does not support reproduction of video having the second luminance dynamic range and supports reproduction of video having the first luminance dynamic range, and includes: generating a video signal to be included in the video data using a second OETF; storing, into VUI in the video data, first transfer function information for identifying a first OETF to be referred to by the first device when the first device decodes the video data; and storing, into SEI in the video data, second transfer function information for identifying a second OETF to be referred to by a second device supporting reproduction of video having the second luminance dynamic range when the second device decodes the video data.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: May 31, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Virginie Drugeon, Takahiro Nishi, Tadamasa Toma
  • Patent number: 11341889
    Abstract: A display device includes a pixel unit including first and second pixel columns arranged alternately along a first direction, and a third pixel column arranged between the first and the second pixel columns, a timing controller generating first or second image data by converting input image data, and a data driver generating a data voltage corresponding to the first or second image data and supplying the data voltage to the pixel unit. The first and second pixel columns each include first and second color pixels arranged alternately along a second direction, the third pixel column includes a third color pixel arranged along the second direction, and the timing controller compares a difference value between a grayscale value of the first color pixel and a grayscale value of the second color pixel with a reference value, and generates the second image data based on a comparing result.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: May 24, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae Kwan Seo, Woo Mi Bae, Young Ha Sohn
  • Patent number: 11341919
    Abstract: Disclosed are a drive circuit, a driving method therefor, and a display device. The drive circuit is configured to drive a device to be driven to work; the drive circuit and said device are connected in series between a first working voltage end (VL1) and a second working voltage end (VL2); the drive circuit is configured to control formation of a current path between the first working voltage end (VL1) and the second working voltage end (VL2); the drive circuit comprises a drive sub-circuit, a writing sub-circuit, a compensation sub-circuit, and a gray-scale control sub-circuit, wherein the compensation sub-circuit is separately connected to the first working voltage end (VL1), a first scan signal end (G_A), a first node (N1), and a third node (N3) and is configured to compensate for the first node (N1) under control of the first scan signal end (G_A) and the first working voltage end (VL1).
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 24, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Minghua Xuan, Han Yue, Qi Qi, Jing Liu
  • Patent number: 11341934
    Abstract: An image display system includes a graphic processor which generates an image signal, a control signal, and a variable frequency signal; and a display device which displays an image at a frame frequency corresponding to the variable frequency signal from the graphic processor. The display device includes pixels connected to emission control lines, data lines, and scan lines; a controller which provides reference data including information on reference cycles, which are cycles in which an emission control start signal is output, to the graphic processor, outputs the emission control start signal based on the control signal, and adjusting an output timing of a scan start signal based on the variable frequency signal; an emission driver which supplies emission control signals to the emission control lines based on the emission control start signal; and a scan driver which supplies scan signals to the scan lines based on the scan start signal.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: May 24, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Gyu Lee, Ji Hye Kim, Jin Wook Yang, Jae Hyeon Jeon
  • Patent number: 11335272
    Abstract: An organic light-emitting diode (OLED) driving characteristic detection circuit is provided. The OLED driving characteristic detection circuit comprising a first current integrator receiving a first current via a first sensing channel and outputting a first sampling voltage based on the first current, a second current integrator receiving a second current via a second sensing channel and outputting a second sampling voltage based on the second current, and a sampling circuit receiving the first and second sampling voltages, followed by storing and holding the first and second sampling voltages, and removing common noise components included in the first and second sampling voltages, a third sampling capacitor and a fourth sampling capacitor which are connected to an output terminal of the second current integrator and store and hold the second sampling voltage, and a plurality of switches which connect first ends of the first sampling capacitor to the fourth sampling capacitor.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: May 17, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ha Jun Lee, Jeong Ah Ahn, Ji-Yong Jeong, Suk-Yun Woo, Young Sub Jin
  • Patent number: 11335249
    Abstract: A light-emitting panel and a brightness adjustment method, and a display device are provided. The method includes providing the light-emitting panel including a substrate, a plurality of light-emitting units, a control circuit, and a plurality of signal lines. The control circuit includes a data signal input terminal, a data storage unit, and a plurality of first signal terminals. The data storage unit is configured to store a first voltage signal and a first pulse width modulation signal corresponding to a different grayscale value. Each signal line connects a light-emitting unit with a first signal terminal. The method also includes obtaining a to-be-displayed screen, and determining each grayscale value of a corresponding light-emitting unit of the plurality of light-emitting units. Further, the method includes according to different grayscale values, calling the first pulse width modulation signal and the first voltage signal corresponding to each grayscale value in the data storage unit.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: May 17, 2022
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Conghua Ma, Xiaoping Sun, Lihua Wang, Qiang Dong, Yue Yang, Qiongqin Mao, Juan Wu, Jiayin Tang
  • Patent number: 11330979
    Abstract: Methods, apparatus, and system for a virtual reality device including a display monitor, an adjustable lens, and a focus sensor. The focus sensor may be used to measure a distance between an eye and the display monitor or whether the eye is able to focus images from the display monitor. The user may provide a diopter correction. The VR device may then adjust an optical power of the adjustable lens, based on at least one of the distance or whether the eye is able to focus images from the display monitor. The focus sensor may emit coded electromagnetic radiation and determine a time-of-flight of the coded electromagnetic radiation to determine the distance or whether the eye is able to focus images from the display monitor. The adjustable lens may comprise a flexible lens; the flexible lens may be adjusted with actuators, such as piezoelectric actuators.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: May 17, 2022
    Assignee: Intel Corporation
    Inventor: I-Chun Huang
  • Patent number: 11335259
    Abstract: An electro-optical device includes a first data transfer line that intersects a scan line, a second data transfer line, a first transistor that controls coupling between the first data transfer line and the second transfer line. The two or more second data transfer lines are respectively coupled to the first data transfer line via first capacitors, and when a collection of pixel circuits that are coupled to the same first data transfer line via the second data transfer lines is referred to as a pixel string, the second data transfer lines are provided to pixel circuits less than the pixel circuits included in the pixel string.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 17, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Takeshi Koshihara
  • Patent number: 11335266
    Abstract: A compensation method for a display panel and a display device are provided. The display panel includes a plurality of sub-pixels, and at least one of the plurality of sub-pixels includes a sensing capacitor. The method includes: obtaining a first voltage value and a second voltage value of the sensing capacitor, obtaining a temperature change amount of a sub-pixel corresponding to the sensing capacitor according to the first voltage value and the second voltage value of the sensing capacitor, determining a value of a compensation parameter of the sub-pixel according to the temperature change amount of the sub-pixel and a preset correspondence between the temperature change amount of the sub-pixel and the compensation parameter; and performing a compensation on a driving voltage of the sub-pixel according to the value of the compensation parameter as determined.
    Type: Grant
    Filed: September 29, 2019
    Date of Patent: May 17, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song Meng, Fei Yang, Chun Cao, Xiaolong Wei
  • Patent number: 11335255
    Abstract: A signal processing device and an image display apparatus including the same are disclosed. The image display apparatus includes a display including an organic light emitting diode panel and a signal processor configured to control the display, wherein the signal processor is configured to perform luminance conversion based on a first luminance conversion pattern in the case in which the luminance level of an input image is greater a first level and to perform luminance conversion based on a second luminance conversion pattern having a higher luminance level than the first luminance conversion pattern in the case in which the luminance level of the input image is equal to or less than the first level, whereby low gray level expression of the organic light emitting diode panel is improved.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: May 17, 2022
    Assignee: LG ELECTRONICS INC.
    Inventor: Sungjin Park
  • Patent number: 11335241
    Abstract: What is described above are optional embodiments of the present disclosure. It should be noted that, for those of ordinary skills in the art, several modifications and refinements may be made without departing from the principle of the present disclosure. These modifications and refinements should also be considered to be within the scope of the present disclosure. What is described above are optional embodiments of the present disclosure. It should be noted that, for those of ordinary skills in the art, several modifications and refinements may be made without departing from the principle of the present disclosure. These modifications and refinements should also be considered to be within the scope of the present disclosure.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: May 17, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Han Yue, Minghua Xuan, Ning Cong, Can Zhang, Can Wang, Detao Zhao, Xiaochuan Chen
  • Patent number: 11333917
    Abstract: According to one embodiment, a display device includes a first display panel, and a polarizer opposed to the first display panel and having a transmission axis for transmitting linearly polarized light. The first display panel includes a first substrate, a second substrate opposed to the first substrate, and a first liquid crystal layer held between the first substrate and the second substrate and including streak-like polymers and liquid crystal molecules. An extension direction of the polymers is substantially orthogonal to the transmission axis.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: May 17, 2022
    Assignee: Japan Display Inc.
    Inventor: Kentaro Okuyama