Thin Film Transistor Type (tft) Patents (Class 324/760.02)
  • Patent number: 10990731
    Abstract: This disclosure describes methods, systems and media for analyzing voltage drops in a power delivery network in a simulated design of an electrical circuit. In one embodiment, a system determines, for a victim element (“victim”), a voltage drop caused by each aggressor element (“aggressor”) in a set of aggressors in the design and creates a data structure that includes, for each victim, at least one of: (1) each voltage drop caused by each aggressor in the set of aggressors or (2) a sum of the voltage drops on the victim caused by all of the aggressors in the set of aggressors. The system can then compute a set of simulations based on random inputs to generate a distribution of possible voltage drops for each victim using data in the data structure.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: April 27, 2021
    Assignee: ANSYS, INC.
    Inventors: Altan Odabasi, Emrah Acar, Sudarsana Reddy Mallu, Tinu Thomas, Mirza Milan, Scott Johnson, Joao Geada
  • Patent number: 10977973
    Abstract: A display device and a detection method applied to the display device are provided. The display device includes a display panel, a source control circuit, and a leakage estimation circuit. The display panel includes pixels being arranged in M columns, wherein at least one panel-partition is defined on the display panel. The source control circuit includes M source drivers which respectively provide data voltages to the M columns of pixels. The leakage estimation circuit includes an evaluation circuit, a defect detection circuit, and a mode-switch. The evaluation circuit controls the defect detection circuit to perform a leakage estimation procedure so that a leakage current corresponding to the panel-partition is estimated when the at least one mode-switch is turned on.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 13, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Yen-Cheng Cheng, Hsiu-Hui Yang
  • Patent number: 10971076
    Abstract: A display device includes a pixel circuit on a substrate, a data line on the substrate, the data line being configured to transmit a data signal for the pixel circuit, a monitoring line on the substrate, the monitoring line being different from the data line, and a monitoring circuit. The monitoring circuit is configured to monitor a signal at a monitoring point on a path of the data signal with the monitoring line, and supply a correction signal in place of the data signal to the pixel circuit via the monitoring line and the monitoring point in response to detection of transmission failure of the data signal.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: April 6, 2021
    Assignees: TIANMA JAPAN, LTD., Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Genshiro Kawachi, Masamichi Shimoda, Yoshihiro Nonaka, Jiro Yanase
  • Patent number: 10964244
    Abstract: [Object] An object is to suppress an occurrence of display unevenness in a pause-and-drive operation. [Solution] A display device configured to perform pause-and-drive operation includes an nth stage circuit connected to one end of an nth gate bus line, and an nth transistor connected to the other end of the nth gate bus line. One of a first clock signal group (AGCK1 to AGCK6) is input to the nth stage circuit. One of a second clock signal group (BGCK1 to BGCK6) is input to the nth transistor. In a pause period in which all clock signals of the first clock signal group are fixed at an inactive level, one or more pulses (P3 to P6) are included in the second signal group.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: March 30, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Akira Tagawa, Yasuaki Iwase, Jun Nishimura, Takuya Watanabe, Yohei Takeuchi
  • Patent number: 10948749
    Abstract: A display panel and a display test apparatus and a method of testing the display panel are provided. The display panel includes an array substrate; a test device disposed on the array substrate and configured to receive a test signal from a display test apparatus to test a plurality of pixel units of the display panel; and a connection device disposed on the array substrate and configured to be electrically connectable to the display test apparatus electrically, the test device receives a discharge signal from the display test apparatus to discharge the plurality of pixel units in response to a switch of a connection state between the connection device and the display test apparatus from electrical connection to electrical disconnection.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: March 16, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Shicheng Sun, Jianfei Tian, Zhiqiang Wang, Shuang Hu, Peirong Huo
  • Patent number: 10818208
    Abstract: A source driver includes a first output pad, a second output pad, a first charge-sharing path, a second charge-sharing path, a first charge-sharing switch, a second charge-sharing switch and a test circuit. A first terminal and a second terminal of the first charge-sharing switch are respectively coupled to the first output pad and the first charge-sharing path. A first terminal and a second terminal of the second charge-sharing switch are respectively coupled to the second output pad and the second charge-sharing path. The test circuit is coupled to the first charge-sharing path and the second charge-sharing path. The test circuit performs a test for the first output pad and the second output pad via the first charge-sharing path, the second charge-sharing path, the first charge-sharing switch and the second charge-sharing switch in a test period.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: October 27, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventor: Yu-Jen Yen
  • Patent number: 10733923
    Abstract: The present application discloses a detection method for a display panel and a detection apparatus for a display panel. The detection method includes the following steps: storing a picture for detection in a source driver circuit board of a display panel; electrically connecting a power source board generating a power source signal directly to the source driver circuit board.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 4, 2020
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wei Chen
  • Patent number: 10713985
    Abstract: A method of inspecting light emitting elements includes disposing a first electrode and a second electrode on a substrate. A solution including a plurality of light emitting elements is applied on the first electrode and the second electrode. A first voltage is applied across the first electrode and the second electrode so as to cause the plurality of light emitting elements to emit light. The light emitted from the plurality of light emitting elements is photographed and first image data is generated therefrom. A density of the plurality of light emitting elements is determined using the first image data.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: July 14, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Sungbae Ju
  • Patent number: 10643564
    Abstract: A liquid crystal display includes scanning lines and signal lines arranged in a matrix pattern on a TFT substrate, a pixel being formed at a crossing portion of each scanning line and each signal line, and including a TFT that is connected to each scanning line and each signal line, first nonlinear resistance elements formed respectively in the scanning lines, each of which being connected to one scanning line at one end thereof and to a short ring power-supply line for a scanning line at another end thereof, and second nonlinear resistance elements formed respectively in the signal lines, each of which being connected to one signal line at one end thereof and to a short ring power-supply line for a signal line at another end thereof. A voltage is applied to the first and second nonlinear resistance elements independently of each scanning line and each signal line.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 5, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinji Kawabuchi, Manabu Tanahara
  • Patent number: 10634717
    Abstract: A testing apparatus for testing an integrated circuit package having a plurality of electrical terminals includes a base, a socket, a plurality of conductive pins and a plurality of conductive pillars. The base includes a plurality of electrical contacts. The socket is disposed on the base and includes a bended portion bended away from the base and a plurality of through holes distributed in the socket. The conductive pins are disposed in the through holes respectively and electrically connected to the electrical contacts, wherein each of the conductive pins protrudes from an upper surface of the socket for forming temporary electrical connections with one of the electrical terminals. The conductive pillars are disposed on the base and connected to the bended portion, wherein each of the conductive pillars electrically connects one of the conductive pins and one of the electrical contacts.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: April 28, 2020
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Tang-Jung Chiu, Hung-Chih Lin, Mill-Jer Wang
  • Patent number: 10613155
    Abstract: A short circuit testing method for a capacitive sensing device including a plurality of sense lines and a plurality of drive lines includes: under a short circuit testing mode, coupling at least one first line in the sense lines and drive lines to a reference level; using a sensing circuit corresponding to a specific sense line to read out a testing resultant signal; and, comparing the testing resultant signal with a reference signal to determine whether a short circuit exists.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: April 7, 2020
    Assignee: PixArt Imaging Inc.
    Inventors: Sung-Han Wu, Wooi Kip Lim, Kei Tee Tiew, Keen-Hun Leong
  • Patent number: 10553154
    Abstract: A method and an apparatus for detecting a driving circuit. The method includes: inputting a data signal, a gate line scanning signal, a voltage signal, and a first control signal with a first voltage level into a data input end, a gate scanning input end, a power source end and a voltage sensing end of the driving circuit, respectively; by inputting a second control signal with a second voltage level into a sensing-scanning input end, controlling a pixel storage capacitor to be charged, and measuring a first voltage of an OLED anode end; by inputting the second control signal with a third voltage level to the sensing-scanning input end, controlling the pixel storage capacitor to be discharged, and measuring a second voltage of the OLED anode end; and determining whether the driving circuit has abnormity or not according to the first voltage and the second voltage.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 4, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yongqian Li, Pan Xu, Zhidong Yuan
  • Patent number: 10546781
    Abstract: Disclosed is a display device that includes an array substrate that includes a display region and a first non-display region, and includes a signal line connected to a pixel in the display region; a first signal transfer line that is at the first non-display region and transfers a test signal, and a second signal transfer line that transfers a test enable signal; a connection pattern connected to the first signal transfer line; a test transistor that is connected between the signal line and the connection pattern, and is connected to the second signal transfer line; and an electrostatic induction element that includes a dummy device in the form of either a dummy pattern and/or a dummy test transistor, the dummy pattern including a dummy connection pattern connected to the first signal transfer line, the dummy test transistor connected to the second signal transfer line.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: January 28, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Sun-Hyun Choi, Ki-Taeg Shin, Tae-Yun Roh
  • Patent number: 10541256
    Abstract: An embodiment of the present disclosure relates to an array substrate, which comprises data lines and gate lines arranged on the array substrate having a pixel region and a peripheral region surrounding the pixel region, and at least two repair lines arranged on the peripheral region of the array substrate. The at least two repair lines intersect with one of the data lines and the gate lines. Each of the repair lines has at least one repair voltage lead. The array substrate according to the present disclosure can increase the number of data lines or gate lines that can be repaired, improve a utilization ratio of the repair lines, and can be used for repairing a display panel with large area.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: January 21, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianbo Xian, Xueguang Hao, Hongfei Cheng, Yongda Ma
  • Patent number: 10535285
    Abstract: A gate driver on array (GOA) display panel and a GOA display apparatus are disclosed. The display panel has a scan driving circuit, a data driving circuit, a thin-film transistor array, a plurality of scanning lines, a plurality of data lines, and a sub-pixel array. Starting from the first row of the sub-pixels, two of the scanning lines that are connected to two adjacent odd-numbered rows of the sub-pixels are both connected to a first clock signal control terminal; two of the scanning lines that are connected to two adjacent even-numbered rows of the sub-pixels are both connected to a second clock signal control terminal.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: January 14, 2020
    Assignee: Shenzhen China Star Opto Semicon Display Tech Co.
    Inventor: Mian Zeng
  • Patent number: 10510277
    Abstract: An organic light emitting display device including pixels positioned in regions defined by scan lines and light emission control lines extending in a first direction, and data lines extending in a second direction different from the first direction, the pixels being configured to control an amount of current flowing from a first power source to a second power source by way of organic light emitting diodes (OLEDs) in response to data signals, organic light emitting display device includes a scan driver configured to sequentially supply scan signals to the scan lines and light emission control signals to the light emission control lines during an inspection period, and a data driver configured to supply inspection data signals to the data lines in synchronization with the scan signals during the inspection period.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: December 17, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: In Soo Wang
  • Patent number: 10502996
    Abstract: A display motherboard and a method of cutting the same are provided, which relate to a display technology to form a display panel of narrow bezel.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: December 10, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhuo Wang, Haoyuan Fan, Wulin Shen
  • Patent number: 10469442
    Abstract: Systems and methods are described to enable adaptive handling of domain resolution requests originating from a virtual private cloud (VPC) networking environment. An administrator of the VPC can provide a set of rules specific to the VPC that designates how requests for a domain name should be handled. The rules may specify, for example, that a request for a given domain name should be routed to a particular domain name server, which may include a private domain name server, should be dropped, or should be routed according to a default behavior (e.g., a public domain name system). Resolution requests originating in the VPC can be associated with a VPC identifier. When an adaptive resolution system receives the request, it can retrieve rules associated with the VPC identifier, and apply the rules to determine further routing for the request.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: November 5, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Andrey Mizik, Lee-Ming Zen, Gavin Derek McCullagh, Yohanes Santoso, Vadim Meleshuk, Yu Gu, Minli Lai, Ivan Mistrianu, Rebecca Claire Weiss, Yi Cheng Chen, Ronald Andrew Hoskinson
  • Patent number: 10446069
    Abstract: A display device includes a display panel, a first inspection line, a second inspection line, and an inspection circuit controlling a connection between the first inspection line and a first pixel group and a connection between the second inspection line and the second pixel group. The inspection circuit includes a switching part including a first switching part that controls the connection between the first inspection line and the first pixel group and a second switching part that controls the connection between the second inspection line and the second pixel group and a dummy circuit including a dummy transistor that is electrically connected to the switching part and including a first dummy electrode, a second dummy electrode that is connected to the first dummy electrode, and a dummy control electrode.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: October 15, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyunwoong Kim, Seung-kyu Lee, Kwang-min Kim, Jongwon Park
  • Patent number: 10402427
    Abstract: Disclosed are a system and a method for analyzing a result of clustering massive data. An open-source map/reduce framework named Hadoop is used to calculate a silhouette coefficient corresponding to a significance verification index capable of evaluating a result of clustering massive data. To implement the system and the method for analyzing a result of clustering massive data, clustered data is divided into blocks. For all of the blocks, input splits are generated. Then, the generated input splits are assigned to multiple computers. Each computer stores only data of blocks included in an input split assigned in a memory, and calculates a silhouette coefficient for each record. Each computer provides only the calculated silhouette coefficient to an index coefficient calculation apparatus, and enables the index coefficient calculation apparatus to calculate a silhouette coefficient for a cluster. Therefore, the result of clustering the massive data can be rapidly and objectively analyzed.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: September 3, 2019
    Assignee: SK PLANET CO., LTD.
    Inventors: Chae Hyun Lee, Min Soeng Kim, Jun Sup Lee
  • Patent number: 10403196
    Abstract: Disclosed is a source driver including a sensing circuit capable of sensing whether a short occurred between a data output line and a power line. The source driver may include: an output circuit configured to output a preset voltage to a display panel in a checking mode; and a sensing circuit configured to sense whether data output lines connecting the output circuit and the display panel are shorted, using the preset voltage, and output a sensing result signal.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: September 3, 2019
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Ju Young Shin, Jung Bae Yun, Yong Jung Kwon, Jeung Hie Choi
  • Patent number: 10366643
    Abstract: A display panel includes: a display including pixel columns electrically connected to data lines; a non-display area adjacent the display; a test circuit configured to receive a lighting test signal passing through at least a portion of the non-display area and to transfer the lighting test signal to the data lines in response to a test control signal; and a switch configured to receive a data signal from an external component and to transfer the data signal to the data lines in response to a switching signal.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 30, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Kyu Kwak, Hwan-Soo Jang, Seung-Kyu Lee
  • Patent number: 10311765
    Abstract: An electrostatic discharge (ESD) and testing composite component, an array substrate and a display device are provided. The composite component includes a first signal line, a first thin-film transistor (TFT) and a second TFT which are electrically connected with the first signal line, a second signal line electrically connected with the first TFT, and a third signal line and a fourth signal line which are electrically connected with the second TFT; and the composite component is configured to provide a testing signal for the first signal line at a first stage and configured to provide ESD for the first signal line at a second stage, and the first stage is a testing stage and the second stage is an ESD stage. The composite component occupies small area and acquire a narrow-bezel and/or high-resolution display panel.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: June 4, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueguang Hao, Yong Qiao, Xinyin Wu
  • Patent number: 10304364
    Abstract: What is disclosed are structures and methods for testing and repairing emissive display systems. Systems are tested with use of temporary electrodes which allow operation of the system during testing and are removed afterward. Systems are repaired after identification of defective devices with use of redundant switching from defective devices to functional devices provided on repair contact pads.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 28, 2019
    Assignee: VueReal Inc.
    Inventor: Gholamreza Chaji
  • Patent number: 10256212
    Abstract: The present disclosure provides a semiconductor chip. The semiconductor chip includes a switching element having a gate electrode, a first pad, and a second pad. The first control pad is electrically connected to the gate electrode and applied with a voltage controlling the switching element to switch on or switch off. The second control pad provides a current path of a control current flowing between the first control pad and the second control pad when the switching element is in a switch-on state. One of the first control pad or the second control pad includes two pad components and a remaining one of the first control pad or the second control pad is disposed between the two pad components of the one of the first control pad or the second control pad.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: April 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kenji Kouno, Hiromitsu Tanabe
  • Patent number: 10109688
    Abstract: The present invention provides a repair structure of a line defect of an AMOLED display panel and a repair method. The conductive film (410) correspondingly overlaps and covers above the test TFT (310) and is insulated from the test TFT (310), and the repair line (420) is insulated and crossed with all the signal fanout lines (200) and the corresponding test line (330). It is realized that the repair line is directly grafted on the AMOLED display panel detecting circuit, which can utilize the present detecting circuit layout of the AMOLED display panel capable of introducing the repair line for having the repair function and saving the layout space, and has no additional requirement to the control IC, and particularly, can be applicable for the line defect repair of the small size, high resolution AMOLED display panel.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: October 23, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Baixiang Han
  • Patent number: 10043426
    Abstract: A liquid crystal panel, a TFT substrate, and a detection method for TFT substrates are disclosed. The TFT substrate includes a plurality of pixel cells. The secondary pixel area of the first pixel cell in the (2n+1)-th row electrically connects to the capacitor of the second pixel cell in the (2n+2)-th row, and the secondary pixel area of the first pixel cell in the (2n+2)-th row electrically connects to the capacitor of the first pixel cell in the (2n+1)-th row. Different voltage signals are respectively provided to the first pixel cell and the second pixel cell. In this way, the short-circuit between the capacitor and the secondary pixel area within the same pixel cell may be detected, and thus may be repaired in time so as to enhance the product reliability.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: August 7, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Huan Liu
  • Patent number: 10033691
    Abstract: Systems and methods are described to enable adaptive handling of domain resolution requests originating from a virtual private cloud (VPC) networking environment. An administrator of the VPC can provide a set of rules specific to the VPC that designates how requests for a domain name should be handled. The rules may specify, for example, that a request for a given domain name should be routed to a particular domain name server, which may include a private domain name server, should be dropped, or should be routed according to a default behavior (e.g., a public domain name system). Resolution requests originating in the VPC can be associated with a VPC identifier. When an adaptive resolution system receives the request, it can retrieve rules associated with the VPC identifier, and apply the rules to determine further routing for the request.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 24, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Andrey Mizik, Lee-Ming Zen, Gavin Derek McCullagh, Yohanes Santoso, Vadim Meleshuk, Yu Gu, Minli Lai, Ivan Mistrianu, Rebecca Claire Weiss, Yi Cheng Chen, Ronald Andrew Hoskinson
  • Patent number: 9978296
    Abstract: A method and device for detecting a defect of a display panel, the method comprises steps of: connecting at least one electrical test pad on the display panel to a first detecting terminal, and connecting another at least one electrical test pad on the display panel to a second detecting terminal; providing a preset voltage between the first detecting terminal and the second detecting terminal; and, detecting whether magnitudes of currents passing through the first detecting terminal and the second detecting terminal within a predetermined time are less than a preset current threshold, and if not, then determining there is a defect on the display panel. The present disclosure can implement effective detection and interception of a progressive defect or badness in the display panel.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: May 22, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhengxin Zhang, Shuai Xu, Jingshan Ma
  • Patent number: 9978318
    Abstract: An electronic paper display device includes a display region, a signal-sending region, data lines, scan lines, selection-line regions, and a repair line. The signal-sending region is located at a side of the display region. The scan lines intersect the data lines to divide the display region into pixel regions. Each of the selection-line regions is located at a side of one of the scan lines. Disposed on two sides of each of the scan lines are respectively one of the pixel regions and one of the selection-line regions. Each of the selection-line regions has selection lines. The selection lines intersect the data lines. The repair line is between the signal-sending region and the display region. The repair line intersects the selection lines. The repair line and the data lines are selectively electrically connected to one of the selection lines.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: May 22, 2018
    Assignee: E Ink Holdings Inc.
    Inventors: Yao-Te Tseng, Wen-Jung Lee, Jia-Hung Chen, Shu-Fen Tsai
  • Patent number: 9946380
    Abstract: The present invention provides a detection circuit of an In Cell type touch display panel and a detection method. By locating a line multiplexer corresponding to the touch sensing electrodes of each column, and selecting and charging at least one parasitic capacitor constructed with the touch sensing electrode and a ground in the touch sensing electrodes of the column with the line multiplexer, and then, measuring the charge electric quantity with the electric quantity measurement unit, and judging whether the touch sensing electrode faults or not according to the value of the charged electric quantity, the detection circuit can accomplish the fault detection to the touch sensing electrode in the array process.
    Type: Grant
    Filed: October 10, 2015
    Date of Patent: April 17, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Wenying Li, Sikun Hao
  • Patent number: 9905155
    Abstract: The present disclosure provides a gate driver circuit including at least one set of clock signal lines and multiple levels of shift registers arranged in a cascaded manner. Each set of the clock signal lines includes two clock signal lines. The multiple levels of shift registers is divided into at least one set, and each set of the clock signal lines corresponds to a set of the shift registers. One clock signal line in each set of the clock signal lines is connected to a resetting signal input end of a last-level shift register in the set of the shift registers corresponding to the set of the clock signal lines. The present disclosure further provides an array substrate, a display device and a method for driving the gate driver circuit.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: February 27, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yuanbo Zhang, Seungwoo Han, Haoliang Zheng
  • Patent number: 9898945
    Abstract: A display panel includes a substrate, a display area, N data lines, first switches, second switches, third switches, and fourth switches. A first peripheral circuit zone, a second peripheral circuit zone, and a display area are defined on a first surface of the substrate, and located between the first peripheral circuit zone and the second peripheral circuit zone. A display area circuit is located in the display area. Each of the N data lines crosses the display area circuit from the first peripheral circuit zone to the second peripheral circuit zone, and N is a positive integer greater than 1. The first switches are located in the first peripheral circuit zone. The second switches are located in the first peripheral circuit zone. The third switches are located on the first surface. The fourth switches are located in the second peripheral circuit zone.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: February 20, 2018
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Cheng-Liang Chang, Hsing-Lung Lee, Tsung-Jieh Shiao, Che-Ming Yang, Yuh-Huah Wang
  • Patent number: 9869913
    Abstract: Inside of a region for inspection set outside a display region of an active matrix substrate, lead-out lines (27a to 27f) connected to data lines pass through in a column direction, and a control line for inspection (31) and six signal lines for inspection (32a to 32f) extend in a row direction. TFTs for inspection (51a to 51f) control a conduction state between the lead-out line and the corresponding signal line for inspection in accordance with a signal on the control line for inspection. Inside the region for inspection, three of the six signal lines for inspection are arranged on one side of the control line for inspection, and the remaining three are arranged on other side of the control line for inspection. One of the two adjacent lead-out lines is connected to one of the former signal lines for inspection via the TFT for inspection (51a, 51c, 51e), and the other is connected to one of the latter signal lines for inspection via the TFT for inspection (51b, 51d, 51f).
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: January 16, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Yoshida, Isao Ogasawara, Yasuhiro Mimura
  • Patent number: 9741275
    Abstract: The present disclosure relates to a panel detection circuit and a display panel. The panel detection circuit comprises a source detection unit comprising a source testing line and several source switching units, a gate detection unit comprising a gate control line, a gate testing line and several gate switching unit, wherein the source switching unit and the gate switching unit each comprise at least two switching elements to keep the source switching unit and the gate switching unit disenabled after the panel detection is completed.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: August 22, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Qibiao Lv
  • Patent number: 9678372
    Abstract: The present disclosure relates to a peripheral test circuit of a display array substrate, and a liquid crystal display panel. The peripheral test circuit of a display array substrate includes: multiple groups of test signal lines, each group consisting of a first and a second test signal lines spaced from each other; a plurality of test pad leads, each being arranged in an interval formed between the first and the second test signal lines of a respective group, and connected with the first and the second test signal lines but not overlapped with the first and the second test signal lines of other groups; and a plurality of test pads, each being arranged on a respective test pad lead. According to the peripheral test circuit of the present disclosure, the problem existing in the current peripheral test circuit, i.e.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: June 13, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology, Co., Ltd.
    Inventor: Yanfeng Fu
  • Patent number: 9633588
    Abstract: A panel inspection apparatus and a display panel are provided in the present invention. The panel inspection apparatus includes a data line detecting circuit and a scan line detecting circuit. The data line detecting circuit includes a data line detection switch, a control line of the data line detection switch, and a data line of the data line detection switch. The scan line detecting circuit includes a scan line detection switch, a control line of the scan line detection switch, and a data line of the scan line detection switch. The present invention further provides a display panel. The panel inspection apparatus does not need to be removed after detection of the panel in accordance with the panel inspection apparatus and the display panel of the present invention. Therefore, production costs of the display panel are reduced, and productivity of the display panel is improved.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: April 25, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Jehao Hsu, Qibiao Lv
  • Patent number: 9588387
    Abstract: A fast testing switch device arranged on a TFT-LCD array substrate is disclosed. The fast testing switch device switches the testing signals for testing a display area of the TFT-LCD array substrate. The fast testing switch device includes at least a first switch TFT. The gate of the first switch TFT connects to one control chip and a testing block for receiving the switch control signals from the testing block or the turn-off control signals from the control chip. The source of the first switch TFT connects to one data testing line or one gate testing line, and the drain of the first switch TFT connects to the corresponding data line or gate line of the display area. In addition, a corresponding TFT-LCD array substrate is also disclosed. The above configuration not only can achieve the narrow-bezel design but also can enhance the yield rate of the TFT-LCD array substrate.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: March 7, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Qibiao Lv
  • Patent number: 9583033
    Abstract: A display panel for display devices which enables precisely determining whether or not adjacent signal lines are shorted or opened and a method for detecting defects of the signal lines are disclosed. The display panel includes a substrate on which a plurality of signal lines to transmit various signals required by pixels is formed, and one of any two adjacent signal lines is connected to at least one of main signal transmission lines and the other one of the two adjacent signal lines is maintained in a floating state.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: February 28, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Soon-Il Yun, Du-Hwan Oh
  • Patent number: 9575380
    Abstract: A display panel includes a first substrate in which a display region and a circuit component mounting region are defined and a second substrate, an end of which is cut to expose the circuit component mounting region. The first substrate includes a plurality of first source wirings formed from the display region to the circuit component mounting region and a wiring protection pattern formed in a region corresponding to the cut end of the second substrate between any adjacent first source wirings. In a cross sectional view, an upper end of the wiring protection pattern is located above an upper end of the first source wirings.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: February 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Toru Takeguchi
  • Patent number: 9568791
    Abstract: Disclosed are a liquid crystal display device and a testing method thereof. The liquid crystal display device includes a plurality of scan lines, and a plurality of data line sets crossing the scan lines, where each data line set includes a first data line, a second data line, and a third data line. The device also includes a shorting bar for the data lines, a first data switch control line and a second data switch control line. Through holes are not used to connect the data lines and the shorting bar, thus disadvantages of display devices caused by defects in through holes is eliminated. Additionally, the area for testing structures is decreased, so that a small-sized liquid crystal display devices can be produced.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: February 14, 2017
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Xianjun Huang
  • Patent number: 9536459
    Abstract: The present invention provides a testing device and a testing method. The testing method comprises: providing a testing device; bonding at least one connecting terminal of the testing device to signal lines of the display panel; and inputting test signals to the signal lines of the display panel through at least one test contact of the testing device. In the present invention, it is not required to arrange shorting bars on the display panel.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: January 3, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Songxian Wen, Jungmao Tsai, Shiue-shih Liao, Yizhuang Zhuang, Mingfeng Deng
  • Patent number: 9508274
    Abstract: A thin film transistor substrate, includes: pixels disposed in a display area of the thin film transistor substrate and connected to gate lines and data lines; gate pad parts connected to first ends of the gate lines; first test transistors each being connected to a second end of a corresponding gate line of the gate lines; data pad parts connected to first ends of the data lines; and second test transistors each being connected to a second end of a corresponding data line of the data lines. The gate pad parts, the data pad parts, the first test transistors, and the second test transistors are disposed in a non-display area of the thin film transistor substrate. The first test transistors are configured to be switched to receive a first inspection signal and the second test transistors are configured to be switched to receive a second inspection signal.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: November 29, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sungin Ro, Hyangyul Kim, Seunghyun Park, Jaehak Lee
  • Patent number: 9423449
    Abstract: This disclosure provides systems, methods and apparatus for a display apparatus including dummy display elements that can be switched between being coupled to a test bus and a drive bus. When connected to the drive bus, the circuit components, including thin-film transistors, of the dummy display element experience exposure to typical operating signals. When connected to the test bus, the display apparatus can test the operating parameters of the dummy display element circuit components.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: August 23, 2016
    Assignee: Pixtronix, Inc.
    Inventors: Alan Gerald Lewis, Mark Milenko Todorovich, Alain Blaing Nadiguebe, Nada Vukovic-Radic, Stephen Robert Lewis
  • Patent number: 9419017
    Abstract: A slit-shaped repair hole (27S) for repairing a short circuit defect of adjacent pixel electrodes (27) is provided straddling a storage capacitance wiring line (22CsL) at at least one intersection of the edges of the pixel electrode (27) and the storage capacitance wiring line (22CsL).
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: August 16, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Teruki Kanamori
  • Patent number: 9245077
    Abstract: A method for designing a power distribution network of a circuit system includes the following steps: determining positions of a plurality of power source nodes; estimating a current distribution condition of the circuit system; and creating a first part of the power distribution network according to at least the positions of the power source nodes.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: January 26, 2016
    Assignee: MEDIATEK INC.
    Inventors: Chia-Lin Chuang, Kuo-Sheng Wu
  • Patent number: 9182346
    Abstract: A transmittance testing apparatus includes a frame bearing rod for support, and a light emitter carriage, a DUT carriage and a light receiver carriage supported by the frame bearing rod from bottom up; the light emitter carriage is used for placing a light emitter capable of emitting light, the DUT carriage is used for mounting a touch sensor, a light receiver carriage is used for placing a light receiver facing the DUT carriage. Positions of the light emitter, the touch sensor and the light receiver in the apparatus are fixed with respect to each other Thus, stable and accurate measurement of transmittance can be obtained.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: November 10, 2015
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Shengji Yang
  • Patent number: 9171869
    Abstract: The present invention provides an array substrate and a display device, to solve the problem of low testing precision due to significant difference between characteristics of TFTs in the detecting region and TFTs in the display region in the prior art. The array substrate comprises a display region and a dummy pixel region provided in the periphery of the display region, wherein, at least one detecting unit is provided in the dummy pixel region, each detecting unit comprises one second pixel unit, one thin film transistor is provided correspondingly to each second pixel unit, and respective electrodes of each thin film transistor provided correspondingly to the second pixel unit are connected to an external test device through test lines, respectively.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: October 27, 2015
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Yujie Gao, Sangjin Park
  • Patent number: 9153190
    Abstract: A gate driver that comprises n shift registers, wherein n is an integer equal to or larger than 1, each of the n shift registers includes; a start stage which outputs a gate signal and starts its operation in response to a start signal, and a plurality of subsequent stages which are connected to each other in sequence, and which sequentially output a plurality of gate signals in response to a signal output from the start stage, wherein at least one stage of the plurality of subsequent stages is reset by the start signal.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Il Ahn, Ho-Kyoon Kwon, Byoung-Sun Na, Dong-Hyon Ki, Seung-Soo Baek, Hye-Seok Na
  • Patent number: 9153154
    Abstract: A display panel and a testing method are provided. The display panel has a display region and a peripheral circuit region, and includes an active device array substrate, an opposite substrate and a display medium located between the above two substrates. The active device array substrate includes scan lines, data lines, pixel units, a common electrode layer and testing lines. The scan lines and the data lines are intersected to define a plurality of pixel regions in the display region. The pixel units are disposed in the display region respectively, and each pixel unit is electrically connected to the corresponding scan line and the data line. The common electrode layer covers the data lines at least. The testing lines are disposed in the display region, and each testing line which is located between the common electrode layer and the data lines is at least overlapped to the data lines.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 6, 2015
    Assignee: Chunghwa Picture Tubes, LTD.
    Inventor: Han-Tung Hsu