Temporal Processing (e.g., Pulse Width Variation Over Time Patents (Class 345/691)
  • Patent number: 10317728
    Abstract: Object: To provide a backlight device for a liquid crystal display device which can suppress occurrence of power loss in any of light emitting bodies, and a liquid crystal display device including the backlight device. Solution to Problem: In a cluster (161), arranged are two magenta light emitting bodies (131) including a blue light emitting element (143) with high drive voltage and red phosphors (151) covering the blue light emitting element (143), two green light emitting bodies (132), and one blue light emitting body (133). With this configuration, since two blue LED elements (143) are implemented also in two magenta light emitting bodies (131), the drive voltage of the magenta light emitting bodies (131) is substantially equal to the drive voltage of the green light emitting bodies (132) and the blue light emitting body (133).
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: June 11, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuhsaku Ajichi, Naoto Inoue
  • Patent number: 10304382
    Abstract: According to one embodiment, a display device includes a display panel in which pixel units are arranged, and a controller configured to generate image signals by multiplying display data externally supplied to each line by a luminosity adjustment factor, to supply the generated image signals to the pixel units, to accumulate power consumption of each line, and to execute black insertion if the accumulated power consumption is determined to be greater than power consumption of one previous display frame by a predetermined value, wherein the luminosity adjustment factor is acquired by substituting the power consumption of one previous frame to a decreasing function, and a display pattern including a plurality of continuing black display lines is synchronized with supply of the image signals and is displayed moving the same direction of a screen scanning direction of the display panel during the black insertion.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: May 28, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Takayuki Imai, Norio Nakamura
  • Patent number: 10283030
    Abstract: A shift register, a gate driver, a display panel and a driving method are provided. The shift register includes an input-reset circuit, which is connected with a pull-up node; and a driving circuit, which is connected with the pull-up node. The input-reset circuit is configured to: write a voltage of a first signal into the pull-up node in response to a second signal, in an input phase of forward scanning; write a voltage of a fourth signal into the pull-up node in response to a third signal, in a reset phase of forward scanning; write the voltage of the fourth signal into the pull-up node in response to the third signal, in an input phase of reverse scanning; and write the voltage of the first signal into the pull-up node in response to the second signal, in a reset phase of reverse scanning.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 7, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Maoxiu Zhou, Xiaoye Ma, Peng Jiang, Haipeng Yang, Ke Dai, Yong Jun Yoon
  • Patent number: 10276108
    Abstract: The present application provides a method for adjusting backlight brightness levels of a display. A display region of the display is divided into a plurality of sub-display regions. Each sub-display region displays a sub-image region of a to-be-displayed image. A backlight brightness level of a sub-display region is adjustable. The method including: determining if white-image areas in a sub-image region satisfies a preset condition; and increasing the backlight brightness level of a sub-display region corresponding to the sub-image region if the white-image areas satisfy the preset condition.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: April 30, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD
    Inventors: Yifang Chu, Chengqi Zhou
  • Patent number: 10269996
    Abstract: A position sensitive detector includes a substrate, an absorber layer on the substrate, a barrier layer on the absorber layer, a contact layer on the barrier layer, and a first contact and a second contact on the contact layer. The barrier layer prevents a flow of majority carriers from the absorber layer to the contact layer. The position sensitive detector is sensitive to a lateral position between the first contact and the second contact of incident light on the contact layer.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: April 23, 2019
    Assignee: HRL Laboratories, LLC
    Inventors: Hasan Sharifi, Rajesh D. Rajavel, Terence J. De Lyon, Daniel Yap
  • Patent number: 10269297
    Abstract: A pixel circuit, a driving method of the pixel circuit, and a display panel, the pixel circuit includes a first sub-pixel circuit configured to write a first data voltage provided by the first data line under control of the first scan line, and generate a compensation voltage at the first node; at least one second sub-pixel circuit configured to perform threshold voltage compensation by the compensation voltage generated at the first node; the at least one second sub-pixel circuit is configured to write a second data voltage provided by the second data line under control of the second scan line based on a display mode.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 23, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaochuan Chen, Shengji Yang, Can Zhang, Lei Wang
  • Patent number: 10255839
    Abstract: A driver for a display panel includes a driving time accumulator, a ditherer, and a data signal generator. The driving time accumulator determines an accumulated driving time of the display panel. The ditherer determines an amount of dither based at least in part on the accumulated driving time, and performs a dithering operation on input image data with the determined amount of dither. The data signal generator generates a data signal for the display panel based at least in part on the input image data on which the dithering operation is to be performed.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 9, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Hoon Lee, Do-Hyung Ryu, Seung-Ho Park
  • Patent number: 10235956
    Abstract: A technique of, in the case of changing, at predetermined time intervals, a drive circuit for switching a gate line to a selected state, preventing a stopped drive circuit from malfunctioning is provided. Each of a plurality of drive circuits provided for each gate line in an active-matrix substrate includes: a selection circuit unit including an output switching element that is turned on to apply a voltage to the gate line in response to a control signal; an internal line connected to a gate terminal of the output switching element and the gate line; and a potential control circuit unit connected to the internal line for controlling a potential of the internal line in response to the control signal.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: March 19, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kohhei Tanaka, Takayuki Nishiyama, Takeshi Noma, Ryo Yonebayashi
  • Patent number: 10223972
    Abstract: The invention provides an OLED pixel driving circuit and OLED display device. The OLED pixel driving circuit uses 4T1C structure and switch (K). The first pin (K1) of switch (K) is connected to the drain of the third TFT (T3), the second pin (K2) connected to the DAC (DAC), and the third pin (K3) connected to the ADC (ADC). By the switch signal (Switch) controlling the switch (K), the first pin (K1) and the second pin (K3) are connected to enter the display mode, and by the switch signal (Switch) controlling the switch (K), the first pin (K1) and the third pin (K3) are connected to enter the sense mode, so that the ADC (ADC) senses the threshold voltage of the fourth TFT (T4), converted by ADC (ADC) for data compensation in the display mode. The invention can compensate, improve display uniform, improve pixel aperture ratio and reduce manufacturing cost.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 5, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Jimu Kuang, Hongjun Xie
  • Patent number: 10198985
    Abstract: The liquid crystal drive apparatus controls application of a first or second voltage to each pixel of a liquid crystal element in respective multiple sub-frame periods included in one frame period to cause that pixel to form a tone. The sub-frame period where the first voltage is applied to the pixel is referred to as an ON period, and the sub-frame period where the second voltage is applied to the pixel is referred to as an OFF period. The apparatus provide, when causing the pixel to form the tone using the ON period, multiple ON period sets separately from each other in the one frame period. Each ON period set includes one or more ON periods. The apparatus sets a temporal interval between temporal centers of the respective ON period sets to 60% or less of the one frame period or to 5.0 ms or less.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masayuki Abe, Masao Ono
  • Patent number: 10187048
    Abstract: A comparator circuit according to the present disclosure includes: a first switch section that selectively takes in a signal voltage; a second switch section that selectively takes in a control waveform; a differential amplifier including a non-inverted input end connected to each of output ends of the first switch section and the second switch section; a capacity section including one end connected to an inverted input end of the differential amplifier and the other end supplied with a reference voltage; and a third switch section that selectively short-circuits the inverted input end and an output end of the differential amplifier.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: January 22, 2019
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Takaaki Sugiyama, Masaki Yoshioka, Ken Kikuchi, Masaru Chibashi, Ken Kitamura
  • Patent number: 10181302
    Abstract: The present invention provides a drive method of a liquid crystal display panel, in which the counter (21), and the pulse modulation module (22) are located in the sequence controller (2), and the counter (21) in the sequence controller (2) pluses 1 as the sequence controller (2) outputs the display data of each row, and as the counter (21) in the sequence controller (2) pluses to i×M/N, the pulse modulation module (22) in the sequence controller (2) sends one pulse control signal (CS) to the i+1th gate drive IC correspondingly driving the i+1th pixel display region (Zone(i+1)) to control the i+1th gate drive IC (GD(i+1)) to output the target TFT activation voltage corresponding to the i+1th gate drive IC (GD(i+1)) after the internal calculation and the conversion, and thus the TFT activation voltage can be dynamically adjusted in real time.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: January 15, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yinhung Chen, Yu Wu, Anle Hu
  • Patent number: 10175821
    Abstract: A touch calibration system and method thereof are provided in the present invention. When a touch pad stops receiving a touch signal generated from a user to make the touch calibration system be at a calibration mode, a first step of the touch calibration method is providing a fixed count value to a counter of the touch calibration system. A second step is provided that a wave-generation module generates an oscillation wave, a counter counts an oscillation number corresponding to the oscillation wave, and a timer counts a calibration oscillation time. A third step is provided that determining whether the oscillation number achieves the fixed count value. When the oscillation number achieves the fixed count value, a storage module is received the calibration oscillation time to store the calibration oscillation time.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: January 8, 2019
    Assignee: ADVANCED ANALOG TECHNOLOGY, INC.
    Inventor: Kun-Hsu Lee
  • Patent number: 10170044
    Abstract: An organic light emitting display, and a driving method thereof are discussed. The organic light emitting display according to an embodiment includes a plurality of pixels sharing a sensing path, a first switch circuit configured to supply a sensing data voltage to the pixels sharing the sensing path through data lines in response to a first scan pulse, a second switch circuit configured to electrically connect an Organic Light Emitting Diode (OLED) of each of the pixels with the sensing path in response to a second scan pulse to simultaneously supply currents of the pixels to the sensing path in a sensing period, and a sensing circuit configured to sense a sensing value through the sensing path. The sensing path includes a reference voltage line connected to the pixels to provide the currents of the pixels to the sensing circuit. The pixels simultaneously sensed by the sensing circuit have a same sensing value.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: January 1, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Youngju Park, Sanghyun Lim, Sanghoon Jeong
  • Patent number: 10168458
    Abstract: A curved liquid crystal display device includes first and second substrates facing each other and including a central region and a peripheral region; a plurality of data lines disposed on the first substrate and being spaced apart from each other by the same distance; a plurality of gate lines disposed on the first substrate and crossing the plurality of data lines; a pixel electrode disposed on the first substrate; a common electrode on the first substrate or the second substrate; a plurality of black matrixes disposed on the second substrate, a distance between adjacent black matrixes in the central region being smaller than a distance between adjacent black matrixes in the peripheral region; and a liquid crystal layer disposed between the first and second substrates.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: January 1, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: In-Yeong Kong, Do-Sung Kim, Hee-Young Chae, Se-Hong Park, Jong-Sin Park, Ja-Young Pyun, Dong-Yoon Lee, Jae-Woong Youn
  • Patent number: 10139675
    Abstract: According to an aspect, a display apparatus includes: an image display panel that displays an image thereon; a planar light source that includes a plurality of light sources and irradiates a plurality of divided areas of the image display panel with light from the back side of the image display panel; and a signal processor that drives the light sources individually based on input signals of the image to control brightness of the individual divided areas. The signal processor performs image display on the image display panel using output signals obtained by lowering brightness of a dark region in the image represented by the input signals.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: November 27, 2018
    Assignee: Japan Display Inc.
    Inventors: Tsutomu Harada, Kazuhiko Sako, Tae Kurokawa
  • Patent number: 10115376
    Abstract: A display apparatus includes a display panel displaying a normal image in a normal mode and displays a static image in a PSR (Panel Self Refresh) mode, a memory storing refresh image data corresponding to the static image, a comparator comparing image data of an N-th frame received from a graphics processor and refresh image data readout from the memory, a compensator generating a compensation value based on a comparison result and adding the compensation value to the refresh image data, and a data driver generating a data voltage using the refresh image data compensated by the comparator and outputting the data voltage to the display panel.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: October 30, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Han-Sol Yu, Jong-Tae Kim, Su-Cheol Kang
  • Patent number: 10102817
    Abstract: A display device includes a processor including a first display mode in which the processor displays the image on the display screen from an internal image data after the processor receives a first control signal, and a second display mode in which the processor displays the image on the display screen from the image data received by the processor after the processor receives a second control signal. A luminance adjuster adjusts a display luminance based on the internal image data corresponding to a final frame immediately before switching from the first display mode to the second display mode to a display luminance higher than a display luminance of the internal image data of another frame in the first display mode. In the final frame, the image is displayed based on the internal image data in which the display luminance is adjusted by the luminance adjuster.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: October 16, 2018
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Toshiki Onishi, Iwane Ichiyama, Tatsuhiro Inuzuka
  • Patent number: 10096273
    Abstract: A method for debugging an overdrive table is disclosed. The method comprises the steps of establishing debugging conditions for debugging overdrive gray-scale values in overdrive table of different primary colors according to a partition mode of a liquid crystal display device, backlights of two color fields, and a refresh rate of the backlight. According to the method, various factors which influence the display effect of the liquid crystal display panel are taken into consideration when the overdrive table is debugged, whereby the accuracy of the overdrive table can be improved significantly, and a better display effect can be achieved.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: October 9, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yong Fan, Chih Tsung Kang
  • Patent number: 10096304
    Abstract: Provided are a display controller for improving display noise, a semiconductor integrated circuit (IC) device including the same, and a method of operating the display controller. The display controller may include image processing logic configured to sequentially read a plurality of input image data via a data bus and process the plurality of input image data. The display controller may also include a timing generator configured to output a timing control signal. Further, the display controller may include a compensation image generator configured to generate and output a compensation image according to the timing control signal. The display controller may also include a data interface unit configured to transmit one of the compensation image and the plurality of input image data to the display device based on the timing control signal.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: October 9, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Bo Young Kim
  • Patent number: 10083658
    Abstract: The present disclosure discloses a pixel circuit, a drive method thereof, and a related device, comprising: a first reset module, a data write module, a compensation module, a voltage stabilization module, a drive control module, a light emission control module and a light emission component. The pixel circuit can compensate for the drift of the threshold voltage of the drive control module by the cooperation of the above-described modules.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: September 25, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Bo Wang, Minghua Xuan, Zhanjie Ma
  • Patent number: 10074335
    Abstract: A scanning line driving circuit sequentially selects each of a plurality of scanning lines for each unit period. A signal supply circuit supplies, to a signal line, a gradation potential in accordance with a designated gradation of a pixel in a write period within the unit period. The signal supply circuit supplies a pre-charge potential to the signal line in a pre-charge period before the start of the write period in a first unit period of the plurality of unit periods, and the supply of the pre-charge potential to the signal line stops in a second unit period.
    Type: Grant
    Filed: August 20, 2016
    Date of Patent: September 11, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Akihiko Ito
  • Patent number: 10068520
    Abstract: The present disclosure discloses an organic light-emitting display panel and a driving method thereof, and an organic light-emitting display device. The organic light-emitting display panel comprises a pixel array, a plurality of pixel driving circuits, a plurality of reference voltage signal lines and a plurality of data voltage signal lines. The plurality of pixel driving circuits include a first, second and third pixel driving circuits, the first pixel driving circuit and the second pixel driving circuit are adjacent to each other in a row direction of the pixel array, and the second pixel driving circuit and the third pixel driving circuit are adjacent to each other in the row direction of the pixel array. The first pixel driving circuit and the second pixel driving circuit share one reference voltage signal line, and the second pixel driving circuit and the third pixel driving circuit share one data voltage signal line.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 4, 2018
    Assignee: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Dongxu Xiang, Yue Li, Dong Qian, Gang Liu
  • Patent number: 10026503
    Abstract: A program method of a nonvolatile memory device including a plurality of memory cells, each storing at least two bits of data, includes performing a first program operation based on a plurality of program voltages having a first pulse width to program first page data into selected memory cells connected to a selected word line among the plurality of memory cells; and performing a second program operation based on a plurality of program voltages having a second pulse width different from the first pulse width to program second page data into the selected memory cells in which the first page data is programmed.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 17, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Boh-Chang Kim
  • Patent number: 10013938
    Abstract: A display panel includes an array substrate and a color film substrate. The array substrate includes a plurality of pixel groups each including at least two sub-pixels, and a plurality of electrodes configured to provide driving electric fields for display of each sub-pixel. On the array substrate, neighboring pixel groups form a plurality of first gaps extending along a first direction and a plurality of second gaps extending along a second direction. The color film substrate includes a black matrix and a plurality of color filters. The black matrix shields the first gaps and the second gaps but non-overlaps with gaps between neighboring sub-pixels in a same pixel group. A distance from an edge of an electrode corresponding to a sub-pixel to an edge of a color filter corresponding to the same sub-pixel along a direction parallel to the array substrate is greater than or equal to a pre-determined distance.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: July 3, 2018
    Assignees: Shanghai AVIC OPTO Electronics Co., Ltd., Tianma Micro-electronics Co., Ltd.
    Inventors: Kerui Xi, Tingting Cui
  • Patent number: 9997128
    Abstract: A display panel driving apparatus includes a data processor configured to receive N-th line data of image data. N is a natural number not less than 2. The data processor is further configured to perform a first line delay on the N-th line data to output (N?1)-th line data, to output (N?1)-th line substitution data which is obtained by N-th line substitution data, which is based on the N-th line data and the (N?1)-th line data, and to compensate the N-th line data based on the N-th line data and the (N?1)-th line substitution data to output compensation image data. The display panel driving apparatus further includes a data driver and a gate driver.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byungkil Jeon, Yongbum Kim, Eunseon Kim, Yongho Sung
  • Patent number: 9990891
    Abstract: A control device that controls the driving of a display device which changes display states by a writing operation of applying a driving voltage several times, wherein the control device includes a determining portion that determines whether or not the writing operation is performed for each pixel; and a control portion that starts the writing operation in the pixel in which the writing operation is determined to be performed by the determining portion, the writing operation including applying, wherein, in a case where a previous writing operation is not performed on the pixel in which the writing operation is determined to be performed by the determining portion, the control portion starts the writing operation, and in a case where the previous writing operation is performed on the pixel, the control portion starts the next writing operation after the previous writing operation is finished.
    Type: Grant
    Filed: August 20, 2011
    Date of Patent: June 5, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yusuke Yamada, Kota Muto
  • Patent number: 9984601
    Abstract: Embodiments of the present disclosure provide a repairing system and a repairing method for a CABC module. The system comprising: a CABC module that includes a first register and a second register; an initial value register configured to input a check value or an initial value to the first register; a first logic circuit, a second logic circuit, a third logic circuit and a fourth logic circuit.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: May 29, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhijia Cui, Shuai Xu
  • Patent number: 9972237
    Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: May 15, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
  • Patent number: 9972264
    Abstract: A display device includes a processor including a first display mode in which the processor displays the image on the display screen from an internal image data after the processor receives a first control signal, and a second display mode in which the processor displays the image on the display screen from the image data received by the processor after the processor receives a second control signal. A luminance adjuster adjusts a display luminance based on the internal image data corresponding to a final frame immediately before switching from the first display mode to the second display mode to a display luminance lower than a display luminance of the internal image data of another frame in the first display mode. In the final frame, the image is displayed based on the internal image data in which the display luminance is adjusted by the luminance adjuster.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 15, 2018
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Toshiki Onishi, Iwane Ichiyama, Tatsuhiro Inuzuka
  • Patent number: 9946382
    Abstract: A display device including a panel comprising a plurality of pixels, and a drive circuit configured to apply data voltage to the plurality of pixels through data lines is disclosed. In one embodiment, the drive circuit includes a first circuit block having a first recovery time from a power off state to an operational state of the first circuit block, a second circuit block having a second recovery time from a power off state to an operational state of the second circuit block, the second recovery time shorter than the first recovery time, and a control circuit configured to (i) enable the first circuit block and the second circuit block during a first time period, and to (ii) enable the first circuit block and disable the second circuit block during a second time period.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 17, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Yongchae Jung, Seungpyo Seo
  • Patent number: 9928772
    Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 27, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
  • Patent number: 9922592
    Abstract: In one example, a method for controlling a display with a digital signal includes detecting a binary value from a timing controller, the binary value corresponding to a portion of an image to be displayed. The method can also include determining a previous binary value from the timing controller and calculating a difference between the binary value from the timing controller and the previous binary value from the timing controller. Furthermore, the method can include generating an encoded signal based on the difference and transmitting the encoded signal to a display panel.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: March 20, 2018
    Assignee: INTEL CORPORATION
    Inventors: Kunjal Parikh, Khaled Ahmed, Prakash K. Radhakrishnan, Peter L. Chang, Ravi Ranganathan
  • Patent number: 9916785
    Abstract: A storage unit stores first adjustment information which characterizes the correspondence between adjustment parameters which are capable of being set and adjustment amounts of the emission brightness of each of two light emitting elements of the three light emitting elements. A setting unit sets the adjustment parameter. An adjustment unit adjusts the emission brightness of the two light emitting elements based on the adjustment parameter set via the setting unit and the first adjustment information stored by the storage unit.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: March 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Santo
  • Patent number: 9911376
    Abstract: A display device including plural timing controllers is provided. The display device includes a display panel, first and second data drive circuits, first and second timing controllers. The display panel includes pixels and data lines. The first data drive circuit supplies data voltages to a part of the data lines. The second data drive circuit supplies data voltages to the other of the data lines. The first and second timing controllers controls the display panel according to a first inversion scheme when images displayed by first and second image data do not include predetermined problem patterns, and controls the display panel according to an inversion scheme other than the first inversion scheme when the images displayed by the first and second image data include at least one of the predetermined problem patterns.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: March 6, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: HwaYoung Kim, MyungKook Moon
  • Patent number: 9907131
    Abstract: An arbitrary alignment is provided for a series of pulses controlling a switch that in turn controls a current in an LED. Each pulse is generated according to a target time responsive to a reference time in a corresponding cycle of a synchronization clock. Each pulse has a leading portion that precedes its target time and a trailing portion subsequent to its target time. The arbitrary alignment defines the relative size of the leading portion to the trailing portion such that these relative sizes are incrementally changed across successive ones of the pulses.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: February 27, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Lingxin Kong, Nailong Wang, Ze Han
  • Patent number: 9898977
    Abstract: A method for controlling image display is disclosed. The method comprises the following steps: determining whether a still image appears; obtaining, when a still image appears, an actual gray-scale of each pixel of said still image, and generating a plurality of output gray-scales corresponding to the actual gray-scale; and substituting the actual gray-scale with said output gray-scales alternately, and forming dynamic image output. According to the present disclosure, the still image can be converted into dynamic image output through controlling the image display in spatial domain and time domain, and thus the problem of afterimage of the still image can be solved.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: February 20, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yu Yeh Chen, Wenqin Zhao
  • Patent number: 9898150
    Abstract: In one embodiment, a system includes one or more source drivers operable to drive a portion of a row or column of a display. The system also includes a timing controller coupled to each of the one or more source drivers and configured to control the one or more source drivers. The system further includes a downstream link for each of the one or more source drivers, configured to transfer data from the timing controller to one of the one or more source drivers. The system also includes an upstream link for each of the one or more source drivers, configured to transfer uplink data from one of the one or more source drivers to the timing controller, wherein the uplink data includes at least one of downlink lock status information and touch data.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: February 20, 2018
    Assignee: SYNAPTICS INCORPORATED
    Inventors: Stephen L. Morein, Prashant Shamarao, Zhibing Liu
  • Patent number: 9852697
    Abstract: An organic light emitting diode display includes a display panel including a plurality of pixels, each pixel including an organic light emitting diode (OLED) and a driving thin film transistor (TFT) configured to control an amount of current flowing in the OLED depending on a difference between a data voltage and a reference voltage, a source driver integrated circuit (IC) configured to produce the data voltages corresponding to data of an input image and apply the data voltages to data lines connected to the pixels, an image analyzer configured to analyze the data of the input image and produce reference voltage control data, and a reference voltage regulator configured to produce the reference voltages varying depending on the input image based on the reference voltage control data and apply the reference voltages to reference lines connected to the pixels.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: December 26, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Myunggi Lim, Kyoungdon Woo
  • Patent number: 9852699
    Abstract: A backlight unit includes a power converter which generates a light source power voltage at a first node in response to a voltage control signal, at least one light emitting diode string which is connected between the first node and a second node and receives the light source power voltage through the first node, and a controller connected to the second node where the controller detects current of a detection node varying based on a duty ratio of the power control signal, and controls current flowing through the second node when the detected current is greater than a reference value.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: December 26, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Taegon Im, Min-gyu Kim, Youngsup Kwon
  • Patent number: 9830886
    Abstract: According to an aspect, a display device includes an image display panel in which pixels each including first to fourth sub-pixels are arranged in a two-dimensional matrix; and a signal processing unit that converts an input signal into an output signal and outputs the generated output signal to the image display panel. The signal processing unit determines an expansion coefficient, obtains a generated signal of the fourth sub-pixel in each pixel based on input signals of the first to the third sub-pixels in the pixel itself and the expansion coefficient, obtains an output signal for the fourth sub-pixel in each pixel based on a generated signal of the fourth sub-pixel in the pixel itself and a generated signal of the fourth sub-pixel in an adjacent pixel to be output to the fourth sub-pixel.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 28, 2017
    Assignee: Japan Display Inc.
    Inventors: Amane Higashi, Toshiyuki Nagatsuma, Akira Sakaigawa, Masaaki Kabe
  • Patent number: 9830861
    Abstract: A display device can include a display panel, in which a subpixel including a transistor where data lines and gate lines intersect, is disposed; a gate driving unit that sequentially outputs a gate signal to the gate lines; a data driving unit that outputs a data voltage to the data lines according to the gate signal provided to each gate line, and outputs to the data lines during a blank time before a specific frame, data voltages having an output waveform that is identical to data voltages of at least one gate line of the specific frame; and a timing controller that controls the gate driving unit and the data driving unit, and performs a pixel compensation which changes data provided to each subpixel.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: November 28, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Joon-Min Park
  • Patent number: 9826587
    Abstract: An LED lamp comprising: a plurality of LED strings, each LED string comprising a plurality of LEDs; a plurality of constant current circuits for powering the plurality of LED strings, wherein one constant current circuit is provided for each LED string; a plurality of shift registers for controlling the operation of the plurality of constant current circuits, wherein at least one shift register is provided for each LED string; and a microprocessor for supplying timing pulses to the plurality of shift registers for controlling operation of the plurality of constant current circuits, the timing pulses comprising a plurality of serial bit streams.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: November 21, 2017
    Assignee: ProPhotonix Limited
    Inventors: Peter Panek, Philip O'Carroll
  • Patent number: 9804392
    Abstract: Left and right visual feeds are configured to form contiguous non-stereo left, stereo central, and non-stereo right display regions. Viewed together, an appearance of full-width stereo three-dimensionality may be achieved. The left and right display regions have the brightness of the left or right feeds respectively, while the central display region has the combined brightness of the left and right feeds. The parts of the left and right feeds that cooperate to form the stereo central display region may be scaled in brightness, so that the central display area is of uniform brightness with the left and right display areas, or smoothly varying, continuous, varying in a controlled manner, etc., rather than appearing as a sharply-defined area twice as bright as the left and right display areas. Scaling profiles may be uniform step-downs, linearly decreasing, quadratically decreasing, otherwise curved, some combination thereof, etc.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 31, 2017
    Inventors: Sleiman Itani, Shashwat Kandadai
  • Patent number: 9792848
    Abstract: The present invention provides a digital driving method of an OLED display device, and the input front end data analysis module analyzes the data signals of at least two adjacent frames of image, and the OLED display device divides the data signals of each frame of image in the at least two adjacent frames of image into a plurality of subframes according to an order of display times, and adjusts an order of various color components outputted by the plurality of subframes corresponded with the data signals of each frame of image according to an analysis result of the data signals of at least two adjacent frames of image to prevent the new integral effect generates between the two adjacent frames of image because the data signals are different, and thus to eliminate the flicker and raising the image display quality.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: October 17, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., Ltd.
    Inventors: Mingfeng Chen, Chihhao Wu, Houliang Hu
  • Patent number: 9769892
    Abstract: Provided is a display device. According to one embodiment, the display device includes: a backlight unit with a plurality of light emitting strings including at least one light emitting diode; and a display panel displaying an image using light outputted from the backlight unit, wherein the backlight unit includes: a light source unit including the plurality of light emitting strings and a plurality of photo transistors controlling the plurality of light emitting strings; a DC-DC converter outputting the driving voltage to the light source unit; and a driving control unit applying activated gate voltages to turn on the plurality of photo transistors and detecting driving time differences between an output time for outputting the driving voltage and applying times for applying the gate voltages.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: September 19, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Sik Lee, Jin-Won Jang, SeungYoung Choi
  • Patent number: 9753558
    Abstract: A pointing device, display system, and method of operation to allow the detection of a point on an image plane at which the pointing device is pointing.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 5, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Marshall Charles Capps
  • Patent number: 9747845
    Abstract: A display panel driving method for driving a LED module of an electronic device to emit light, the method includes steps: controlling to scan a left-eye image and a right-eye image when the electronic device works at a 3D mode (S401); controlling the LED module to turn off and does not emits light during a predetermined period less than a scanning time of the left-eye image or the right-eye image, after switching to scan the left-eye image and the right-eye image (S402); and controlling the LED module to turn on and emit light after the predetermined period has passed (S403). The present invention also provides a backlight control circuit and an electronic device, the present invention capable of controlling the backlight module to emit light via the same signal and do not cause the interference between different signals.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: August 29, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Hua Zhang, Xianming Zhang
  • Patent number: 9734746
    Abstract: A liquid crystal display device and a driving method thereof are disclosed. The method for driving the liquid crystal display device comprises the following steps: converting three primary color gray-scale data of a frame image to be displayed into multiple color gray-scale data; and presenting a first color field and a second color field of the frame image in sequence, wherein when each color field is presented, different sub pixels are driven according to a color of the backlight of the color field, the multiple color gray-scale data of the frame image, and pre-stored gray-scale data. According to the method, the color shift phenomena of the traditional liquid crystal display device can be eliminated.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: August 15, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology, Co., Ltd.
    Inventors: Yong Fan, Chih Tsung Kang
  • Patent number: 9726917
    Abstract: An image display device includes an image display panel, data drive circuits, a timing control circuit, flexible printed circuits arranged between at least two of the liquid crystal panel, the data drive circuits, and the timing control circuit, to electrically connect the at least two of the liquid crystal panel, the data drive circuits, and the timing control circuit, printed circuit boards arranged between at least two of the data drive circuits, the flexible printed circuit, and the timing control circuit, to electrically connect the at least two of the data drive circuits, the flexible printed circuit, and the timing control circuit, and an element formation portion provided at at least one of the flexible printed circuit and the printed circuit board while including electrical elements regularly arranged on the element formation portion in accordance with at least one predetermined rule.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: August 8, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Yun-Gil Lee, Jong-Yoon Kim