Test Of Liquid Crystal Device Patents (Class 324/760.01)
  • Patent number: 11062660
    Abstract: A display device includes a display panel, a first memory, and a degradation compensator. The first memory device stores stress data including degradation values representing a degradation degree of each of the blocks in the display panel. The degradation compensator loads the stress data from the first memory device, updates the stress data based on current input data and a maximum degradation value, updates the maximum degradation value based on degradation values included in the updated stress data, and generate compensated data by compensating for the current input data based on the updated stress data. The degradation compensator determines whether a first degradation value included in the stress data is normal by comparing the first degradation value with the maximum degradation value, and updates the first degradation value based on at least one adjacent degradation value adjacent to the first degradation value, when the first degradation value is abnormal.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: July 13, 2021
    Inventors: Young Soo Sohn, Jong Man Kim, Bong Gyun Kang, Jae Woo Ryu, Sung Mo Yang
  • Patent number: 10950207
    Abstract: A display device according to an exemplary embodiment includes a display panel that includes a plurality of pixels, and an image shifter that corrects an image corresponding to input image data to be shifted based on age data with respect to the plurality of pixels and an input grayscale of input image data and outputs corrected image data, wherein a shift range of the image is reduced when an age value of the age data exceeds a threshold value.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: March 16, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se Keun Lee, Jae Woo Ryu
  • Patent number: 10853156
    Abstract: A display device may include an image processor which is configured to process an image signal and includes a detector configured to determine a group of parameters by detecting a waveform of a detected partial discharge and measuring each of parameters of the waveform in the form of a binary number and a controller configured to identify the partial discharge by comparing the determined group with previously stored groups; and a display unit configured to display the image signal.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: December 1, 2020
    Assignee: LSIS CO., LTD.
    Inventor: Byung-Chul Kim
  • Patent number: 10852571
    Abstract: A display module includes a plurality of pixels, a plurality of data lines connected to the pixels, a demultiplexer connected to the data lines, a plurality of first pads connected to the demultiplexer, and a plurality of second pads. The second pads include a plurality of first test pads connected to corresponding data lines of the data lines and a first dummy pad connected to one first test pad of the first test pads.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: December 1, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-been Hwang, Kinyeng Kang
  • Patent number: 10782547
    Abstract: A second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, the counter electrodes of the respective divided blocks are commonly provided for the respective pixels of the plurality of display lines in series, and the counter electrodes also serve as scanning electrodes of the touch panel, and a counter electrode selector circuit that selects the counter electrodes. The counter electrode selector circuit includes an address decoder circuit that selects the counter electrodes of the respective blocks for a given period, and a selector circuit that applies a touch panel scanning voltage to the counter electrode of the block selected by the address decoder circuit, and applies a counter voltage to the counter electrodes of the blocks not selected by the address decoder circuit.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: September 22, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshinori Aoki, Keita Sasanuma, Kazune Matsumura
  • Patent number: 10713986
    Abstract: A system reads a desired circuit parameter from a pixel circuit that includes a light emitting device, a drive device to provide a programmable drive current to the light emitting device, a programming input, and a storage device to store a programming signal. One embodiment of the extraction system turns off the drive device and supplies a predetermined voltage from an external source to the light emitting device, discharges the light emitting device until the light emitting device turns off, and then reads the voltage on the light emitting device while that device is turned off. The voltages on the light emitting devices in a plurality of pixel circuits may be read via the same external line, at different times.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: July 14, 2020
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Ricky Yik Hei Ngan, Nino Zahirovic, Yaser Azizi
  • Patent number: 10705367
    Abstract: An array substrate includes a base substrate, a plurality of first signal lines extending in a first direction, a plurality of second signal lines located on a different layer from the first signal lines and extending in a second direction intersecting the first direction, and a plurality of touch signal lines extending in the second direction disposed on the base substrate. Each touch signal line includes a first touch line segment and a second touch line segment, the first touch line segment disposed on the same layer as the first signal lines, and at least partially overlapping with at least one of the second signal lines in a direction perpendicular to a surface of the base substrate, the second touch line segment disposed on a different layer from the first signal lines, and the first touch line segment electrically connected with the second touch line segment through a first via.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: July 7, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhengkui Wang, Jian Sun, Fei Huang, Jiguo Wang, Yun Qiao, Xiaozhou Zhan, Han Zhang, Zhen Wang, Wenwen Qin, Lele Cong, Peng Liu, Jianjun Zhang
  • Patent number: 10672313
    Abstract: An array substrate, a method for determining an abnormal display thereof, a display panel, and a display device are provided. The array substrate includes: a source IC in a border area of the array substrate, wherein the source IC includes a reset pin and idle output pins; a reset unit in the border area of the array substrate, wherein the reset unit includes an output terminal and input terminals, the input terminals of the reset unit are electrically connected with the idle output pins of the source IC, and the output terminal of the reset unit is electrically connected with the reset pin of the source IC; and the reset unit is configured to determine whether the array substrate displays abnormally, and if so, to reset the source IC.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: June 2, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Zhicheng Wang
  • Patent number: 10665190
    Abstract: A power supply device includes a power circuit, feedback circuit, compensation circuit, and PWM controller. The power circuit generates an output voltage based on a PWM signal. The feedback circuit outputs a feedback voltage. The compensation circuit compares a reference voltage with the feedback voltage and outputs a compensation signal based on a comparison result. The PWM controller adjusts the duty ratio of the PWM signal based on the compensation signal. The compensation circuit includes a comparator to compare the feedback voltage with the reference voltage, a first voltage adjuster to adjust a voltage level of a compensation voltage based on the comparison result, and a compensator output the compensation signal based on the voltage level of the compensation voltage. The compensation signal has a width in a high section that varies. The booster boosts the response speed of the compensator in a predetermined section based on a control signal.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: May 26, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seokhwan Lee, Jongjae Lee, Junki Hong
  • Patent number: 10649509
    Abstract: A display device includes a display panel including a plurality of pixels, first and second source boards connected to the display panel, and a control board. The control board is connected to the first source board via a first power cable and to the second source board via a second power cable. The control board is configured to control a power voltage provided to the pixels based on a first connection signal received from a first ground line of the first power cable and a second connection signal received from a second ground line of the second power cable.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 12, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Seung-Jun Lee
  • Patent number: 10650715
    Abstract: A short circuit detector includes a first transistor connected between a first portion of a data line and a second portion of the data line and including a gate electrode connected to a first node; a second transistor connected between a first voltage source and the first node and including a gate electrode configured to receive a short-circuit test signal; a third transistor connected between a second node included in the second portion and a third node and including a gate electrode configured to receive the short-circuit test signal; a fourth transistor connected between a second voltage source and the first node and including a gate electrode connected to the third node; and a fifth transistor connected to the first node and a third voltage source and including a gate electrode connected to the third node in common with the gate electrode of the third transistor.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: Seong Heon Cho
  • Patent number: 10606421
    Abstract: A tree-dimensional (3D) touch panel and a manufacturing method thereof, a touch drive device and method, and a display device are provided. The 3D touch panel includes a display backplate and a cover plate opposite to each other. The display backplate includes a display substrate, a plurality of first touch electrodes, first wirings, and a plurality of spacers. The cover plate includes a cover plate substrate, a plurality of second touch electrodes and second wirings formed on a surface of the cover plate substrate facing the display backplate, and a position touch layer formed on a surface of the cover plate substrate away from the display backplate. The position touch layer is configured to detect a touch position; and the first touch electrodes and the second touch electrodes correspond to each other in position and are both disposed at the spacers.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: March 31, 2020
    Assignees: BOE Technology Group Co., Ltd., ORDOS Yuansheng Optoelectronics Co., Ltd.
    Inventors: Qiang Wang, Libin Liu
  • Patent number: 10586507
    Abstract: A display device may include display pixels configured to emit light at a luminance corresponding to a data signal, at least one auxiliary pixel configured to store an auxiliary voltage, a gate driver configured to supply a gate signal to the display pixels and the auxiliary pixel, a data driver configured to convert image data into the data signal, and supply an auxiliary voltage having a preset level to the auxiliary pixel. A sensing circuit is configured to sense a change in the auxiliary pixel for each frame, and generate compensation voltage information. A timing controller is configured to convert an image signal into the image data, and generate a driving voltage control signal. A voltage generation unit is configured to generate a driving voltage corresponding to the driving voltage control signal, and generate the reference gamma voltage based on the driving voltage.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: March 10, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Hoon Lee, Jai Hyun Koh, Heen Dol Kim, Bong Hyun You, Soo Yeon Lee, Seok Ha Hong
  • Patent number: 10459039
    Abstract: Systems and methods for testing a light emitting display unit having a plurality of light emitting elements are disclosed. Embodiments include a system with a test module, the test module including a plurality of light detection elements. Each of the plurality of light detection elements may generate a signal upon detection of light emitted from a light emitting element. The test module may also include a circuit. The circuit may receive input signals from the plurality of light detection elements, process the input signals based on a pre-determined function of the circuit, and generate an aggregate output signal based on the processing of the input signals. The circuit may also process the input signals based on discrete implementation of a combinational logic. The circuit may further receive instructions determining the combinational logic to be implemented.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: October 29, 2019
    Assignee: CAPITAL ONE SERVICES, LLC
    Inventors: Kevin Osborn, Tyler Locke, David Kelly Wurmfeld
  • Patent number: 10408858
    Abstract: The disclosure relates to the field of display devices and discloses a test fixture for a display device. The test fixture includes a fixing component, and a test component arranged detachably from the fixing component, wherein the fixing component includes a fixing component body, and a clamp arranged on the fixing component body to clamp the display device, and the test component is configured to be electrically connected with a circuit board of the display device.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 10, 2019
    Assignees: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Co., Ltd.
    Inventors: Guowen Yang, Zhouping Wang
  • Patent number: 10362242
    Abstract: An imaging system includes an array of photodetectors that produce an array of intensity values. Image and display processing components of the imaging system produce an array of display-formatted pixels for display on an imaging system display. The display-formatted pixels include a first plurality of pixels associated with a color lookup table and a second plurality of pixels associated with a grey-scale lookup table. The image and display processing components compare pixel intensity values to temperature criteria and apply the color lookup table to pixels satisfying the temperature criteria and apply the grey-scale lookup table to pixels not satisfying the temperature criteria.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: July 23, 2019
    Assignee: Seek Thermal, Inc.
    Inventor: Blake Henry
  • Patent number: 10339881
    Abstract: The disclosure provides a method of acquiring an overdrive look-up table of a liquid crystal display. By measuring a plurality of chromaticities in the central area and the edge area of each of the test pictures respectively, a plurality of compliance data is found, and a median of the compliance data is taken as an overdriving value, and then an overdrive look-up table is generated according to the overdriving values acquired from the test, the method can automatically acquire the overdrive look-up table of LCD, thereby improving test efficiency and reducing test costs.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: July 2, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Samar Tung
  • Patent number: 10325535
    Abstract: A method for testing a display panel includes: applying a first level signal to a first sub-pixel and a third sub-pixel of a first pixel unit and applying a second level signal to a second sub-pixel of the first pixel unit; applying the second level signal to a first sub-pixel and a third sub-pixel of a second pixel unit and applying the first level signal to a second sub-pixel of the second pixel unit; and detecting a short circuit between adjacent sub-pixels. The first level signal has a voltage polarity opposite to a voltage polarity of the second level signal. Therefore, it is ensured that any two adjacent sub-pixels have opposite voltage polarities when the short circuit between adjacent sub-pixels of the display panel is detected. The method also provides improved testing abilities to detect an open circuit in a sub-pixel.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 18, 2019
    Assignees: Shanghai AVIC OPTO Electronics Co., Ltd., Tianma Micro-electronics Co., Ltd.
    Inventors: Xu Yang, Nana Tian, Xupeng Wang, Zhiyong Ren, Xiaoyuan Ding, Zhengyuan Huang
  • Patent number: 10311808
    Abstract: A system for calibrating a liquid crystal display (LCD) includes a plurality of temperature sensors, a storage medium, and a controller. Each temperature sensor measures a current temperature of at least one pixel in the LCD. The storage medium stores information about latencies for any LC-based pixel, wherein each latency corresponds to a time period for transition from a starting to an ending illumination state for one temperature of the LC-based pixel. The controller determines, based on the current temperature, the transition information and frame information, a time for each pixel in at least a portion of the LCD to transition from a first to a second illumination state. The controller computes, based on transition times, an LC transition time for at least the portion of the LCD and performs calibration of at least the portion of the LCD based on the LC transition time.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: June 4, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Evan M. Richards, Matthew Robert Fulghum
  • Patent number: 10310653
    Abstract: A display panel includes a plurality of touch blocks matrix-arranged and corresponding to each of two or more adjacent pixel areas of the plurality of pixel areas, and first, second, third and fourth test signal lines through which first, second, third and fourth test signals are supplied by an auto probing unit. Accordingly, not only a defect in an image output function, but also a defect in a touch sensing function can be inspected prior to a modularization process by using the first, second, third and fourth test signals.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: June 4, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Sudong Kim, Jinho Lim, Sangbin Lee, Jongseok Kim
  • Patent number: 10283028
    Abstract: Embodiments of the present disclosure provide an organic electroluminescent display panel, an aging testing device and method, and a display device. A signal generator can simultaneously drive a plurality of parallel organic electroluminescent display panels to ensure the high efficiency of the aging test. In addition, during the aging test, the electrical coupling between the normal organic electroluminescent display panel and the signal generator can be maintained, and the electric coupling between the abnormal organic electroluminescent display panel and the signal generator can be disconnected. Thus, it is possible to prevent the abnormal organic electroluminescent display panel from affecting other normal organic electroluminescent display panels in parallel therewith, under the premise of ensuring the high efficiency of the aging test.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: May 7, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiaoping Wu
  • Patent number: 10262564
    Abstract: The present invention provides a test circuit of gate driver on array (GOA) and a test method of GOA. The test circuit of GOA comprises a first wiring arranged outside the area where the plurality of display panels is located; a second wiring located between two of the adjacent regions; a switch unit arranged between the first wiring and the second wiring, wherein the area is divided into a plurality of areas where the display panel is located.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: April 16, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Xiaowen Lv
  • Patent number: 10186182
    Abstract: An adapter device for test, including: an adapter board having a voltage input terminal connected to an external power supply and an output terminal connected to a terminal to be tested; a voltage conversion circuit disposed on the adapter board and connected to the voltage input terminal and configured to convert the voltage of the external power supply received at the voltage input terminal into a test voltage to be supplied to the terminal to be tested; a feedback circuit connected to the voltage conversion circuit and configured to compare the test voltage with a reference voltage to provide feedback data; and a compensation circuit connected to the feedback circuit and the adapter board, and configured to generate a compensation voltage based on the feedback data and apply the compensation voltage to the adapter board to compensate for the test voltage.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: January 22, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lei Wang, Xiaopeng Liu, Yanjiao Pan, Shufen Song, Shengfei Ma, Peng Xie
  • Patent number: 10186464
    Abstract: An array substrate motherboard, an array substrate, a display device and a method of manufacturing an array substrate are provided. The array substrate motherboard includes a plurality of array regions and a plurality of testing line regions. Each array region includes a fan-out region, a display region and a sealant arrangement region.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: January 22, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Peng Wu
  • Patent number: 10172233
    Abstract: A display device includes: a flexible substrate including a display unit and a plurality of peripheral units which surrounds the display unit and are bent to overlap a part of the display unit; a display member positioned at the display unit and which displays an image; and a signal line positioned at the plurality of peripheral units, where the plurality of peripheral units is bent in a way such that parts of the signal line, which are respectively positioned at adjacent peripheral units, are in contact with each other.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: January 1, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung Hoon Chung, Chul Kyu Kang
  • Patent number: 10157938
    Abstract: The present application discloses a fabrication method for forming an array substrate, including: forming, in a fanout region, a first signal-load line connected to a first group of data lead wires, and a second signal-load line connected to a second group of data lead wires; and forming, in the fanout region, at least one unidirectional device at a connection point of the first signal-load line and a data lead wire, at least one unidirectional device at a connection point of the second signal-load line and a data lead wire. The first signal-load line and the second signal-load line are each configured to transmit an external testing signal along a single direction to the data lead wires through the unidirectional devices.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: December 18, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Shiju Zhang, Xingfeng Ren, Guoquan Liu
  • Patent number: 10147174
    Abstract: A substrate inspection device is provided, which includes a main body, a bearing module, an illuminating and camera module and a control module. A mask is held by the bearing module, which has an opening. The illuminating and image capturing module is disposed on the lifting unit. After receiving the first detecting signal, the control module accordingly drives the lifting unit to shift towards the first direction, such that the illuminating and image capturing module moves closer to the substrate. The control module then controls the shifting unit to drive the light-emitting component to project a first spot-light on the substrate through the opening, and controls the shifting unit to move by a step manner so as to carry the bearing module. The control module also controls the illuminating and image capturing module to capture images the first regions of the substrate and to generate the first images.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: December 4, 2018
    Assignee: Acemach Co., Ltd.
    Inventor: Chih-Chiang Chang
  • Patent number: 10056019
    Abstract: The invention provides a touch display panel, including: a lower substrate where a common electrode layer, a first test pad, and a second test pad are formed, an upper substrate disposed above the common electrode layer, a liquid crystal layer sandwiched between the upper substrate and lower substrate, wherein the common electrode layer is divided into a plurality of common electrode blocks arranged in a matrix, and any two adjacent common electrode blocks of the plurality of common electrode blocks are coupled to the first test pad and the second test pad, respectively.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: August 21, 2018
    Assignee: INNOLUX CORPORATION
    Inventors: Sheng-Feng Huang, Chien-Feng Shih
  • Patent number: 9933673
    Abstract: A liquid crystal display panel, an array substrate and a manufacturing method for the same are provided. Designing a black matrix for light shielding, and an insulation layer between a pixel electrode and other structures in order to reduce the type and the number of the masks, simplify the manufacturing process and decrease the production cost. Besides, a distance between the black matrix located above a data line and the data line is shorten such that lights of a pixel emitting out through an adjacent pixel is avoided in order to reduce the light leakage at a large viewing angle.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 3, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Sikun Hao
  • Patent number: 9874774
    Abstract: Methods and apparatus for testing operation of a single or multiple tunable active optical device(s) operated by one or more driving electrodes are described. Test methods and apparatus are provided for device testing without necessarily requiring direct physical contact with the driving electrodes. Testing subjects devices to incident light along an optical path and to an external electric field applied to the device producing a dipolar charge distribution within the electrodes, causing the device to operate. The effect of device operation on incident light is optically sensed. The sensed effect is analyzed to identify device defects. Test methods and apparatus are provided for testing multiple unsingulated devices during fabrication employing a strip contact structure having contact strips connected to multiple devices and extending to wafer edges, such that singulating devices leaves portions of the strip contact structure exposed on device dice edges providing electrical contacts in use.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: January 23, 2018
    Assignee: LENSVECTOR INC.
    Inventors: Bahram Afshari, Karen Asatryan, Peter P Clark, Tigran Galstian, Michael J. Nystrom, Vladimir Presniakov, Sergei Yakovenko, Armen Zohrabyan
  • Patent number: 9858886
    Abstract: Provided is a method for compensating for a defective pixel of a display. The method includes identifying at least one of a plurality of pixels of a display as a defective pixel and compensating for a function of the defective pixel by using at least one pixel from a first pixel group located in a first partial region corresponding to the defective pixel and a second pixel group located in a second partial region located adjacent to the first partial region among a plurality of partial regions, each partial region comprising some adjacent pixels among the plurality of pixels.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: January 2, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Kon Bae, Soo-Hyung Kim, Yong-Man Lee, Sung-Dae Cho, Seok-Jin Han
  • Patent number: 9835884
    Abstract: There are provided an array substrate and method for manufacturing the same, a display panel and method for testing the same, and a display apparatus. The array substrate comprises a display region and at least one bond region located outside of the display region; wherein a plurality of signal lines are disposed within the display region, and a plurality of wiring terminals connected to multiple ones of the plurality of signal lines through a plurality of first lead wires are disposed within each bond region; the array substrate further comprises one or more test regions corresponding to arbitrary one or more of the at least one bond region; wherein a plurality of test terminals are disposed within each test region, and the plurality of test terminals within any one of the one or more test regions are connected with the plurality of wiring terminals within a respective one of the at least one bond region through a plurality of second lead wires.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: December 5, 2017
    Assignees: Boe Technology Group Co., Ltd., Beijing Boe Display Technology Co., Ltd.
    Inventors: Yaoxie Zheng, Zheng Bian, Jinwei Zhu
  • Patent number: 9798404
    Abstract: A touch panel and a driving method are described in the present disclosure. A driving chip is arranged within a chip area of a non-display area. The driving chip includes a plurality of pins. At least a portion of the pins outputs first driving signals for controlling the pixel electrodes, and outputs second driving signals for controlling the touch sensor. A plurality of wirings corresponding to the pins is arranged within the fan area, and the wirings transmit the first driving signals and the second driving signals outputted by the pins. In view of the above, the difficulties of the bonding manufacturing process are reduced. At the same time, the coupling capacitance between the wirings is reduced, and thus the display performance and the touch sensibility of the touch panel 10 are enhanced.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: October 24, 2017
    Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd, Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Sikun Hao
  • Patent number: 9778787
    Abstract: A touch display device including multiple data lines, multiple scan lines and a substrate is provided. The data lines and the scan lines are formed on the substrate. The touch display device includes multiple pixel elements arranged in the form of a pixel array and coupled to the corresponding data lines and the corresponding scan lines and multiple touch sensor electrodes arranged in the form of a sensor array. The touch display device further includes a touch gate pad formed on the substrate and multiple first switch transistors. Each first switch transistors includes a first end, a second end and a control end. The first end is coupled to one of the touch sensor electrodes in a first column of the touch sensor electrodes, and a touch display driver. The second end is coupled to a first test pad. The control end is coupled to the touch gate pad.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: October 3, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Pai-Tsun Cheng, Huai-Chin Tsai
  • Patent number: 9747825
    Abstract: A flexible display device includes a display panel, at least one inspection part, and a detector. The display panel includes at least one bending portion and a display area. The inspection part is located on the bending portion and bends in a manner similar to the bending portion. The detector applies an inspection signal to the inspection part and receives an output signal from the inspection part. A crack in the inspection part is then determined based on a comparison of the inspection and output signals.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: August 29, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventor: Eunah Kim
  • Patent number: 9741276
    Abstract: An electro-optical device includes: a display unit having a plurality of pixel circuits each including a driving transistor and a light emitting element that emits light depending on a current output from the driving transistor when a voltage is applied to a gate terminal of the driving transistor; and a test unit having a test unit connection switch connected to the gate terminal of the driving transistor of each of the pixel circuits, and a test voltage supply circuit connected to the gate terminal of each of the driving transistors through the test unit connection switch and configured to supply a test voltage to the gate terminal of each of the driving transistors when the test unit connection switch is turned on.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: August 22, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Daisuke Nishinohara, Akimasa Maruo
  • Patent number: 9693050
    Abstract: Methods, systems and apparatuses, including computer program products, are described for determining a performance metric of a mobile computing device application. A test computing device captures a plurality of images displayed on a mobile computing device based on execution of a mobile computing device application. The test computing device determines a first property for first and second images of the plurality of images. A first performance parameter is set based on a difference between the first properties of the first and second images. The test computing device determines a first property for third and fourth images of the plurality of images. A second performance parameter is set based on a difference between the first properties of the third and fourth image. A performance metric is determined based on a difference between the first performance parameter and the second performance parameter.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: June 27, 2017
    Assignee: FMR LLC
    Inventors: Sunil Madhani, Bahram Omidfar
  • Patent number: 9640600
    Abstract: A manufacturing method of a display device includes forming a pixel in a display area of a panel, forming a transistor circuit in a peripheral area of the panel, the peripheral area being located in the vicinity of the display area, forming a first pad in a part of the peripheral area, forming a second pad in a peripheral area of another panel adjacent to the part of the panel, the second pad being electrically connected to the transistor circuit, performing a driving inspection on the transistor circuit by use of the second pad, and separating the first pad and the second pad from each other after the driving inspection.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: May 2, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Oooka, Toshihiro Sato
  • Patent number: 9625626
    Abstract: Embodiments of the present invention disclose a display motherboard and a manufacturing method thereof. The display motherboard includes a plurality of process areas, the process area includes a plurality of display panels and the display panel includes a color filter substrate and an array substrate provided opposite to each other. The technical solution of the present invention first determines the process area, to which the display panel belongs, by the predetermined number for transitional sub-pixels in the part of the non-display area on one side of the display area on the color filter substrate, and then determines the specific position of the display panel in the process area, to which the display panel belongs, by the location identifier on the array substrate, so that the identification for the display panel is realized, which improves capacity of production line while optimizing design space of peripheral area for the display panel.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: April 18, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Hui Wang, Yuanhui Guo, Chun Wang, Junsheng Chen, Xiaohe Li
  • Patent number: 9595214
    Abstract: A method of controlling a driving voltage of a display apparatus includes transmitting a ready signal from a timing control circuit of the display apparatus to a power management circuit of the display apparatus through a connection area of a connection member of the display apparatus, which is disposed between a display panel and a main circuit board of the display apparatus, and controlling a generation of the driving voltage from the power management circuit based on the ready signal received by the power management circuit, where the display apparatus includes a gate driver circuit disposed on the display panel, and the timing control circuit and the power management circuit are disposed on the main circuit board.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: March 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee-Jeong Seo, Jae-Ill Kim, Jong-Min Shim, Ji-Young Lee, Seung-Hwan Cheong, Eui-Myeong Cho
  • Patent number: 9591745
    Abstract: A display device includes a display panel including a substrate having a display area and a non-display area outside the display area, a display unit being in the display area, and a plurality of pads in the non-display are, a sealing unit covering the display unit, and a circuit board including a plurality of terminals electrically coupled to the plurality of pads. The circuit board has a plurality of folding portions such that the circuit board is folded at least two times in directions different from each other.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: March 7, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang-Wan Kim, Won-Kyu Kwak
  • Patent number: 9576514
    Abstract: A detecting method and a detecting apparatus for detection of a gate line disconnection. The gate line disconnection detecting method includes step 1: providing a first unit (41) at least capable of receiving signals at one end of a gate line to be detected (2), and providing a second unit (42) at least capable of transmitting signals at the other end of it; step 2: providing a first signal receiving unit (51) for receiving signals on a gate line other than the gate line to be detected (2). With respect to the gate line disconnection detecting method, whether disconnection occurs or not is judged depending on the signal strength received by the first signal receiving unit (51), and thus, the case that in a gate line disconnection detection of a bilateral drive type display device, whether a gate line is disconnected or not can be accurately detected, is realized. By it, technical supports are provided for getting rid of bad products timely, and a goal of promoting the yield of products is achieved.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: February 21, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Zhenfei Cai, Xu Wang
  • Patent number: 9570035
    Abstract: A display device includes a display unit including pixels in an area defined by a plurality of scan lines and a plurality of data lines, a scan driving unit configured to apply a plurality of scan signals to the scan lines, a data driving unit configured to apply a plurality of data signals to the data lines, an inspection circuit unit configured to apply a plurality of inspection signals to the data lines, a plurality of inspection pads configured to transmit a plurality of inspection control signals to the inspection circuit unit, a plurality of first inspection lines electrically connecting the inspection circuit unit to the inspection pads, and a plurality of second inspection lines branching off from the first inspection lines and electrically connecting the inspection circuit unit to the data driving unit.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventor: Ki-Myeong Eom
  • Patent number: 9570365
    Abstract: The present disclosure provides a display device, including: a display region; and a non-display region adjacent to the display region, wherein the non-display region includes: a gate-driving circuit; a driving unit; and a test pad, wherein the driving unit electrically connects the gate-driving circuit through the test pad. The present disclosure also provides a test pad.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: February 14, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Hung-Kun Chen, Yu-Ti Huang, Hong-Kang Chang
  • Patent number: 9557839
    Abstract: The embodiments of the present invention relate to a display device and a driving method thereof, wherein the display device according to an exemplary embodiment of the present invention includes a plurality of pixels a voltage transmitting line transmitting a first voltage to a first pixel among the plurality of pixels, a data line transmitting a data voltage to the first pixel, and a plurality of sensing units including a first sensing unit connected to the voltage transmitting line, wherein the first pixel includes a first switching element including an input terminal connected to the voltage transmitting line and a second switching element including an input terminal connected to the data line, and the first sensing unit includes a control switching element including an input terminal connected to the voltage transmitting line.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: January 31, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se Hyoung Cho, Dong-Hyeon Ki, Dong Gyu Kim
  • Patent number: 9552753
    Abstract: Aspects of the present disclosure directs to inspection of pixels of a display device using photon collection. In certain embodiments, the display device includes a display panel defining multiple pixels in a pixel matrix. A controller divides the pixel matrix into multiple areas, with each area including at least one pixel, and assigns a threshold value for each area. The controller then controls the pixels in one area to emit light displaying a color. A transparent photon collection panel attached to the display panel receives the light displayed by the area, and generates an analog signal in response to the light. An analog to digital (A/D) converter converts the analog signal to a photon current value. The controller receives the photon current values corresponding to each area, and compares the photon current value with the threshold value for each area to determine a flag value for the area.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: January 24, 2017
    Assignee: AMERICAN MEGATRENDS, INC.
    Inventor: Clas Gerhard Sivertsen
  • Patent number: 9548725
    Abstract: Systems and methods for frequency specific closed loop feedback control of integrated circuits. In one embodiment, a plurality of controllable inputs to an integrated circuit is adjusted to achieve a frequency specific predetermined value of a dynamic operating indicator of the integrated circuit at the desired specific operating frequency. The predetermined value is stored in a data structure within a computer usable media. The data structure comprises a plurality of frequency specific predetermined values for a variety of operating frequencies. An operating condition of an integrated circuit is controlled via closed loop feedback based on dynamic operating indicators of the measured behavior of the integrated circuit.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: January 17, 2017
    Assignee: INTELLECTUAL VENTURES HOLDING 81 LLC
    Inventors: Kleanthes G. Koniaris, James B. Burr
  • Patent number: 9501959
    Abstract: A mother substrate includes a display substrate cell defined by a scribe line, the display substrate cell including a plurality of gate lines, a gate circuit part driving the gate lines, and a gate pad part connected to the gate circuit part, a gate test pad part in a peripheral area surrounding the display substrate cell, the gate test pad part being configured to receive a gate test signal, a gate test line part connecting the gate test pad part and the gate pad part, and a switching part connected to the gate test line part and configured to control turning on and turning off of the gate test line part.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: November 22, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji-Sun Kim, Chong-Chul Chai, Yeong-Keun Kwon
  • Patent number: 9472473
    Abstract: A method and device for testing a thin film transistor (TFT) provided on an array substrate are provided in an embodiment. The method comprises determining periods and signal amplitudes in each period of the gate electrode test voltage signal and the source-drain-electrode test voltage signal corresponding to the TFT characteristics to be tested, wherein both the gate electrode test voltage signal and the source-drain-electrode test voltage signal are alternative current signals; according to the period and the signal amplitude in each period of the gate electrode test voltage signal and those of the source-drain-electrode test voltage signal, applying the gate electrode test voltage signal to a gate electrode of the TFT to be tested, and applying the source-drain-electrode test voltage signal across source and drain electrodes of the TFT; and obtaining the TFT output signals related to the TFT characteristics to be tested.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: October 18, 2016
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Hongjun Yu
  • Patent number: 9443889
    Abstract: The present invention provides a method for manufacturing an array substrate, wherein each data line in a plurality of data line groups forms an integral structure with a first shorting bar, and after etching a source-drain component to form a source electrode and a drain electrode, the data line groups which do not correspond to the first shorting bar is disconnected from the first shorting bar. By adopting the method provided by the present invention, electrostatic breakdown in the manufacturing process of the array substrate can be reduced.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: September 13, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Dalin Xu, JaeYun Jung, Shikai Wang, Keunbum Lee, Fugang Zhang