Thin Film Tansistor (tft) Patents (Class 345/92)
  • Patent number: 10338445
    Abstract: Provided are a pixel driving structure, in which the nth column of TFTs (T) are arranged at positions where the nth column of sub pixels (P) is close to the nth data line (D(n)); in the nth column of sub pixels (P), four sub pixels (P) or two sub pixels (P), which are adjacent vertically in the upper and the lower are set to be a pixel group (PG), and the nth data line (D(n)) sets a signal period to define polarities of respective sub pixels (P) in the pixel group (PG) to make polarity inversion occur at a edge of the two adjacent pixel groups (PG) in the upper and the lower, and polarities of two adjacent columns of sub pixels (P) are opposite to achieve display effect similar to a dot inversion. The pixel aperture regions can be neatly aligned to prevent the color washout.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: July 2, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jianjian Ying, Peng Du
  • Patent number: 10332458
    Abstract: Provided is a display device characterized in that the electric power consumption when optical modulation elements (for example, MEMS shutters) are driven is reduced. A display device (1000) includes a backlight unit (1), a display panel unit (2), a source driver (3), and a controller (4). The backlight unit (1) includes a light source. The display panel unit (2) includes segmented pixel regions AR11 to ARnm each of which includes: a plurality of pixels each of which includes an optical modulation element that performs modulation control with respect to light projected from the backlight unit (1); and a segmented gate driver that controls the optical modulation elements of the pixels. The source driver (3) is a driver that controls the optical modulation elements of the pixels. The controller (4) controls the light source of the backlight unit (1), the segmented gate drivers GD11 to GDnm, and the source driver (3).
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: June 25, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Makoto Eguchi
  • Patent number: 10325557
    Abstract: An organic light-emitting display apparatus includes an organic light-emitting diode (“OLED”), a driving transistor including a gate connected to a first node, and which supplies driving current to the OLED according to a voltage of the gate, a storage capacitor which is connected to the first node, and maintains a voltage of the first node constant, a switching transistor connected to the first node, and comprising a pair of transistors which are turned on at a same time according to a first control signal, and serially connected to each other via a second node, and a voltage level changer which is connected to the second node, and changes a voltage level of the second node to a reference voltage level after the switching transistor is turned off.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: June 18, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Geunho Cho
  • Patent number: 10325925
    Abstract: Embodiments of this invention relate to a display substrate and a method for producing the same, as well as a display apparatus.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: June 18, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yiping Dong, Lei Zhang, Haibo Guo
  • Patent number: 10319305
    Abstract: A current measurement circuit measures a current flowing through a drive transistor when a plurality of measurement voltages are written to a pixel circuit in a switching manner, and a current flowing through an organic EL element when another plurality of measurement voltages are written to the pixel circuit in a switching manner. A correction unit obtains a threshold voltage and a gain of the drive transistor and the organic EL element with respect to each pixel circuit based on a measured current, determines in which operation region the drive transistor operates between a saturation region and a triode region with respect to each pixel circuit based on the video signal, and corrects the video signal in accordance with the operation region of the drive transistor. Since the drive transistor operates both in the saturation region and the triode region, it is possible to reduce a power supply voltage and reduce power consumption of a display device.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: June 11, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Noritaka Kishi, Hiroyuki Furukawa, Katsuya Otoi, Kazuyoshi Yoshiyama, Tamotsu Sakai, Naoko Gotoh
  • Patent number: 10319748
    Abstract: Disclosed is a distribution of TFT components in the LTPS process. A pair of parallel data lines are arranged between an ith and (i+1)th rows of pixels. Each pair of data lines includes a first data line and a second data line. Two adjacent pixels of the ith row are respectively connected to the first data line and the second data line through corresponding U-shaped TFT components. Two pixels of the (n+1)th row corresponding to the two above adjacent pixels are respectively connected to the second data line and the first data line through corresponding U-shaped TFT components. The U-shaped TFT component of the pixel of the ith row and the U-shaped TFT component of the corresponding pixel of the (i+1)th row are disposed with openings thereof facing and staggered with each other. An aperture ratio of a product can be effectively increased by the staggered setting of the U-shaped TFT components.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: June 11, 2019
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Chen Chen
  • Patent number: 10319746
    Abstract: A display device is disclosed, which comprises: a substrate; a first metal conductive layer disposed on the substrate; a semiconductor layer disposed on the first metal conductive layer and having a top surface; and a second metal conductive layer disposed on the top surface and comprising a first part and a second part. Herein, a first extending direction is defined as a direction that the first part extends toward the second part, the first part has a maximum length in a first region that the first part overlaps the first metal conductive layer along the first extending direction, the first part has a maximum width in a second region that the first part overlaps the semiconductor layer along a second direction vertical to the first extending direction, and the maximum length is greater than the maximum width and less than or equal to twice of the maximum width.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: June 11, 2019
    Assignee: INNOLUX CORPORATION
    Inventors: An-Chang Wang, Bo-Chin Tsuei, Hsia-Ching Chu, Ming-Chien Sun
  • Patent number: 10311775
    Abstract: A display device includes a display panel and a control circuit board configured to provide a driving signal to the display panel. The display panel includes a plurality of pixel structures of which pixel structures arranged in one row are connected to one gate line. Pixel structures arranged in one column are connected to one data line. The control circuit board includes a driving chip, an end portion of each of the gate lines and an end portion of each of the data lines are respectively provided with panel pins. The control circuit board is provided with circuit board pins to be electrically connected with the panel pins, and connecting lines through which pins of the control circuit board are connected to the circuit board pins. A spacing between adjacent circuit board pins is larger than a spacing between adjacent pins of the driving chip connected with the circuit board pins.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: June 4, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Pan Xu
  • Patent number: 10297217
    Abstract: The present disclosure discloses a liquid crystal display and the driving circuit thereof. The driving circuit comprises multiple liquid crystal driving units arranged in an array of N rows and M columns. Wherein, the liquid crystal driving unit located at i-th row and j-th column comprises: a first transistor, the gate thereof being connected to the i-th gate line, the source thereof being connected to the j-th data line; a second transistor, the gate thereof being connected to the i-th discharge control line, the source thereof being connected to the i-th discharge wire; a liquid crystal capacitor and a storage capacitor connected in parallel, first terminals thereof being connected to the drain of the first transistor and the source of the second transistor, second terminals of the liquid crystal capacitor and the storage capacitor being connected to the i-th discharge wire.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: May 21, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Zhao Wang
  • Patent number: 10290272
    Abstract: A pixel circuit includes a first capacitor, a second capacitor, a first transistor, a second transistor, and a third transistor. The first capacitor has a first terminal coupled to a common voltage line. The second capacitor has a first terminal coupled to a first control line. The first transistor has a first terminal coupled to a source line, a second terminal coupled to a second terminal of the first capacitor, and a control terminal coupled to a second terminal of the second capacitor. The second transistor has a first terminal coupled to the control terminal of the first transistor, and a control terminal coupled to a second control line. The third transistor has a first terminal coupled to a second terminal of the second transistor, a second terminal coupled to a third control line, and a control terminal coupled to the second terminal of the first transistor.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: May 14, 2019
    Assignee: InnoLux Corporation
    Inventor: Masahiro Yoshiga
  • Patent number: 10282043
    Abstract: Disclosed is a display apparatus which facilitates to improve touch sensitivity by decreasing parasitic capacitance between a common electrode and gate/data lines, and decreasing delay on touch sensing and displaying driving, wherein the display apparatus may include a lower panel including a pixel electrode; an upper panel including the common electrode, wherein the common electrode together with the pixel electrode forms an electric field for displaying an image for a displaying driving mode, and the common electrode senses a capacitance change in accordance with a user's touch for a touch sensing mode; and a liquid crystal layer of VA mode formed between the lower and upper panels, and changed in accordance with the electric field between the pixel and common electrodes.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: May 7, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Tae Hwan Kim, Yong Chan Park, Sang Soo Hwang, Jin Woo Park
  • Patent number: 10281788
    Abstract: It is an object to provide a liquid crystal display device which has excellent viewing angle characteristics and higher quality. The present invention has a pixel including a first switch, a second switch, a third switch, a first resistor, a second resistor, a first liquid crystal element, and a second liquid crystal element. A pixel electrode of the first liquid crystal element is electrically connected to a signal line through the first switch. The pixel electrode of the first liquid crystal element is electrically connected to a pixel electrode of the second liquid crystal element through the second switch and the first resistor. The pixel electrode of the second liquid crystal element is electrically connected to a Cs line through the third switch and the second resistor. A common electrode of the first liquid crystal element is electrically connected to a common electrode of the second liquid crystal element.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: May 7, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 10282032
    Abstract: A display device according to an embodiment includes a display panel, a touch module located on the display panel, a cover film located on the touch module, a first adhesive layer located between the display panel and the touch module, and a second adhesive layer located between the touch module and the cover film, wherein a thickness ratio of the first adhesive layer and the second adhesive layer with respect to a thickness of the display device is in a range of 7% to 40%.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 7, 2019
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: In Kyu Song, Hee Bong Kim, Jun Hee Sung, Min-Ho Lim
  • Patent number: 10267925
    Abstract: Disclosed is a circuit for controlling the temperature and the bias voltage of a detector used by an X-ray analytical instrument. The circuit uses a single common reference voltage for the temperature measurement and for all the ADCs and DACs in the circuit, resulting in reduced drift and improved reproducibility of detector temperature and bias voltage. ADCs with a larger number of bits are used to produce precision values of the temperature, the bias voltage, and their respective setpoints. The setpoints are digitally varied until the precision setpoint values correspond to desired values of temperature and bias setpoints.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: April 23, 2019
    Assignee: OLYMPUS SCIENTIFIC SOLUTIONS AMERICAS INC.
    Inventor: Marc Battyani
  • Patent number: 10269877
    Abstract: A display device is disclosed. In one aspect, a plurality of pixels are formed in a display area, and the pixels include a first pixel including a thin film transistor (TFT). The display device includes a test unit formed in a peripheral area surrounding the display area, and the test unit includes a test transistor configured to measure a characteristic of the TFT included in the first pixel. The display device also includes a first insulating layer formed over the test transistor and the display area, and a plurality of dummy contact holes are formed in the first insulating layer and the test unit.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: April 23, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Won Mi Hwang
  • Patent number: 10262577
    Abstract: A scanning driver circuit includes N stage-connected GOA units. An Nth-stage GOA unit includes a pull-up part, a pull-up control part, a pull-down holding part, and a key pull-down part. The pull-up part is connected to an output terminal of an Nth stage gate signal. The pull-up control part is connected to the output terminal of the Nth stage gate signal. The pull-down holding part receives a first direct current voltage and a second direct current voltage. The key pull-down part connected to the Nth stage gate signal receives the first direct current voltage. The pull-down holding part is formed by a first pull-down holding circuit and a second pull-down holding circuit. The first pull-down holding circuit and the second pull-down holding circuit operate alternatively so that the output terminal of the Nth stage gate signal and the node can hold at a negative voltage level.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: April 16, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Tianhong Wang, Ping-sheng Kuo
  • Patent number: 10255868
    Abstract: An object is to suppress deterioration of a displayed image even when a refresh rate is reduced in displaying a still image. A liquid crystal display device includes a pixel transistor electrically connected to a pixel electrode, and a capacitor having one electrode electrically connected to the pixel electrode and the other electrode electrically connected to a capacitor line. The pixel transistor is turned on and a voltage based on an image signal is supplied to the pixel electrode, and then, the pixel transistor is turned off so that a holding period during which the pixel electrode holds the voltage based on the image signal starts. A holding signal corresponding to change of the voltage based on the image signal in the pixel electrode in the holding period is supplied to the capacitor line so that a potential of the pixel electrode is constant.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: April 9, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hiroyuki Miyake
  • Patent number: 10249257
    Abstract: A display device comprises: data lines extending in a first direction; gate lines extending in a second direction, and being divided into groups each of which has the gate lines adjacent in the first direction; selection signal supplying wirings each of which is provided in each group, and connected to each control electrode of the selector transistors corresponding to the group; gate voltage supplying wirings connected to the other conductive electrode of each of the selector transistors corresponding to the group; and wherein a gate driver supplies a second gate voltage having a voltage level lower than that of a first gate voltage to at least one of the gate voltage supplying wirings in each of the groups before supplying the first gate voltage in order to turn on a pixel transistor disposed in an intersection portion of the data line and the gate line.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: April 2, 2019
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshihisa Ooishi, Daisuke Kajita, Genshiro Kawachi, Sachiko Yamazaki, Kuniaki Amano
  • Patent number: 10241373
    Abstract: A display device that is suitable for increasing in size is provided. A display device with high resolution is provided. The display device has a structure in which two adjacent gate lines are supplied with the same selection signal. In addition, two pixels adjacent in the column direction are connected to respective source lines. Furthermore, one of the two source lines overlaps with a conductive layer functioning as a pixel electrode. Moreover, part of a semiconductor layer of a transistor is provided between the two source lines.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: March 26, 2019
    Assignee: Semiconductor Energy Laboratory co., Ltd.
    Inventors: Shunpei Yamazaki, Kei Takahashi
  • Patent number: 10242631
    Abstract: Provided is a drive compensation circuit including a first register unit, a second register unit, a selection unit, a voltage level shifter, a digital-to-analog conversion unit, and an amplification unit. The first register unit and the second register unit are respectively connected to the selection unit. The selection unit, the voltage level shifter, the digital-to-analog conversion unit, and the amplification unit are connected in sequence.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: March 26, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Zhenling Wang, Taijiun Hwang
  • Patent number: 10242616
    Abstract: A pixel compensation circuit and an Active Matrix Organic Light Emitting Diode (AMOLED) display apparatus. The circuit includes a data signal writing module, a high voltage signal writing module, a first reference voltage generation module and a second reference voltage writing module; the data signal writing module and the high voltage signal writing module are connected with a first terminal of the capacitor; the first reference voltage generation module is connected with a second terminal of the capacitor and a drain of the driving transistor; a gate of the driving transistor is connected with the second terminal of the capacitor, the drain thereof is connected with an anode of the light emitting device, a source thereof is connected with the second reference voltage writing module, and connected with the high voltage signal writing module; a cathode of the light emitting device is connected with a common ground electrode.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: March 26, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaoxiang He, Xiaojing Qi
  • Patent number: 10235958
    Abstract: The present disclosure relates to a gate driving circuit including N number of cascaded-connected GOA driving units, wherein the GOA driving units at each of the levels includes a pull-up control circuit, a pull-up circuit, a level transfer circuit, a boast capacitor, and a pull-down holding circuit. The pull-down holding circuit of the GOA driving unit of the n-th level and the pull-down holding circuit of the GOA driving unit of the (n+1)-th level are turned on alternatedly. The pull-down holding circuit of die GOA driving unit of the n-th level may keep the potential of the node within the GOA driving units at the n-th and the (n+1)-th level in the off state, wherein n=1, 3, 5, . . . , N?1, and N is an even number greater than one. The present disclosure also relates to a LCD including the above gate driving circuit.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: March 19, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Longqiang Shi, Shu Jhih Chen
  • Patent number: 10235935
    Abstract: A power off method of a display device includes: detecting a power off operation on the display device; setting, when the power off operation is detected, a voltage for suppressing electrical stress on a drive transistor, in a capacitance element in each of a plurality of pixel circuits; and stopping power supply to a display panel immediately after the voltage is set.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: March 19, 2019
    Assignee: JOLED INC.
    Inventor: Hitoshi Tsuge
  • Patent number: 10235932
    Abstract: An inverting circuit is disclosed. The inverting circuit includes a pull-up unit including first, second, and third terminals. The first terminal receives a first control signal, and the third terminal is connected to a signal output terminal and outputs a first level signal. The inverting circuit also includes a pull-down unit including fourth, fifth, and sixth terminals. The fourth terminal is connected to the second terminal of the pull-up unit, and the fifth terminal receives a second control signal. In addition, the sixth terminal is connected to the signal output terminal and outputs a second level signal. The inverting circuit also includes a first capacitor, connected to the second terminal of the pull-up unit and the fourth terminal of the pull-down unit, and to the third terminal of the pull-up unit and the sixth terminal of the pull-down unit.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: March 19, 2019
    Assignees: Shanghai Tianma AM-OLED Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Tong Wu, Dong Qian
  • Patent number: 10204564
    Abstract: A display device includes a first substrate and a second substrate opposite to each other, a gate line on the first substrate, a gate driver which is connected to the gate line, a clock line which transmits a clock signal, a connecting line which connects the clock line and the gate driver, a common electrode on the second substrate, the common electrode overlapping the clock line and the connecting line, and a compensation pattern which overlaps the common electrode and extends from the connecting line.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: February 12, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sangyong No, Jiho Moon
  • Patent number: 10204590
    Abstract: A pixel unit includes: a pixel electrode; a first switching unit, including a first gate electrode, a first source electrode and a first drain electrode which are electrically connected with a gate line, a first data line and the pixel electrode respectively; and a second switching unit, including a second gate electrode, a second source electrode and a second drain electrode which are electrically connected with the gate line, a second data line and the pixel electrode respectively. A difference value between a first jumping voltage and a second jumping voltage is in a range from ?0.5 to 0.5 volts, the first jumping voltage is a jumping voltage produced when the first switching unit is changed from an on state to an off state, and the second jumping voltage is a jumping voltage produced when the second switching unit is changed from the on state to the off state.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Ku Hyun Park
  • Patent number: 10199401
    Abstract: An array substrate includes a pixel unit, a data line, a first gate line and a second gate line. Adjacent two columns of pixel units are collectively connected to one data line, adjacent two of the pixel units in each row of pixel units are respectively connected to the first and second gate lines, the pixel unit includes a transistor, and the transistor in each pixel unit is provided adjacent to the data line. In adjacent two columns of pixel units, transistors of two diagonally adjacent pixel units are provided adjacent to the data line and connected respectively to the first and second gate lines. The first and second gate lines surround the gate electrode of the transistor, respectively, and the first and second gate lines are connected to the gate electrode of the transistor at positions of the gate electrode away from the data line.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: February 5, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Hao Leng
  • Patent number: 10192513
    Abstract: The present disclosure provides a circuit for processing a voltage of a pixel electrode and a display apparatus. The circuit for processing a voltage of a pixel electrode comprises: a first input terminal configured to input an original voltage of the pixel electrode; a second input terminal configured to input a voltage of a common electrode; and an output terminal configured to output a processed voltage of the pixel electrode, wherein the circuit for processing a voltage of a pixel electrode is configured to superimpose the voltage of the common electrode on the original voltage of the pixel electrode, to acquire a voltage which is stable with respect to the voltage of the common electrode as the processed voltage of the pixel electrode.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: January 29, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Siqing Fu, Shuai Chen, Xianyong Gao, Lisheng Liang, Bo Xu, Lijun Xiao, Yin-Jen Hsu, Fei Shang, Shaohong Gao
  • Patent number: 10186228
    Abstract: The present disclosure provides a driving circuit for an array substrate, an array substrate, a display panel, and a display device. The driving circuit comprises a plurality of driving signal lines, which are insulated from each other and are used for driving a display region of the array substrate; and at least one driving circuit protection line insulated from the plurality of driving signal lines, wherein a voltage of the driving circuit protection line is smaller than that of each of the plurality of driving signal lines.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: January 22, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD
    Inventors: Yuanyuan Hao, Zhaohui Hao, Zhixiao Yao
  • Patent number: 10177211
    Abstract: Subpixels of R, G, and B corresponding to a scanning line extended in a row direction and a data transfer line extended in a column direction are provided. A plurality of transistors in the subpixel of each of the colors is disposed along the column direction, and a reflective layer in the subpixel of at least one color is disposed along the row direction so as to overlap any transistor of subpixels of each display color. A power source wiring is disposed between the reflective layer and the transistor along the row direction, so as to overlap the transistor. Relay electrodes which connects the reflective layer and any transistor of subpixels of each display color are formed on a layer between a layer on which the power source wiring is formed, and the reflective layer.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: January 8, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota, Ryoichi Nozawa
  • Patent number: 10170048
    Abstract: A pixel and an organic light-emitting diode (OLED) display having the same are disclosed. In one aspect, a pixel includes an OLED including an anode and a cathode and configured to emit light corresponding to data signals applied during first and second frame periods. Each of the first and second frame periods includes a first discharge period and a light-emitting period subsequent to the first discharge period. The pixel also includes a pixel circuit configured to control light emission of the OLED, apply a first voltage to the anode during the light-emitting period, apply a second voltage to the cathode, the second voltage having a voltage level less than that of the first voltage, and apply a third voltage to the anode so as to discharge the anode during the first discharge period. The second voltage has different voltage levels during the first and second frame periods.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: January 1, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Sic Lee, Seung-Kyu Lee
  • Patent number: 10163417
    Abstract: A display panel driving apparatus includes a data driving part, a gate driving part and an off voltage controlling part. The data driving part is configured to output a data signal to a data line of a display panel. The gate driving part is configured to output a gate signal to a gate line of the display panel. The off voltage controlling part is configured to receive a first off voltage and a second off voltage applied to the gate driving part to generate the gate signal, measure a leakage current of the gate driving part, and control the first off voltage based on the leakage current. Thus, display quality of a display apparatus including the gate driving part may be enhanced.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: December 25, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hong-Kyu Kim, Po-Yun Park, Gwang-Soo Ahn, Jung-Hwan Cho
  • Patent number: 10151957
    Abstract: The present disclosure provides an array substrate and a liquid crystal display panel. The array substrate includes a plurality of gate line unit and a plurality of data and common signal multiplexing line, the adjacent data and common signal multiplexing lines and a gate line unit form a pixel region, a first switch unit, a second switch unit, a common electrode and a pixel electrode are arranged in the pixel region, the switch unit includes a gate electrode, a source electrode and a drain electrode. The source electrodes connect the same data and common signal multiplexing line, the data and common signal multiplexing line receives the data and common multiplexing signal, the data and common multiplexing signal, the first gate electrode and the second electrode are used to control the first switch unit and the second switch unit not open at same time.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: December 11, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xiangyang Xu
  • Patent number: 10152917
    Abstract: An organic light-emitting display apparatus includes a plurality of emission pixels, a plurality of dummy pixels, and a plurality of repair lines. The emission pixels are aligned in column and row directions in an active region. The dummy pixels are in a dummy region. The repair lines are connected to at least one of the at least one sub-emission pixel or at least one of the dummy pixels. Each emission pixel includes at least one sub-emission pixel. At least two sub-emission pixels aligned in a column or row direction are alternately connected to two repair lines.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: December 11, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Kyung-Hoon Chung
  • Patent number: 10146091
    Abstract: A display apparatus includes gate lines extending in a first direction, data lines crossing the first direction and having polarities of data voltages consecutively repeated every four data lines, and pixels which each comprise three sub-pixels. One of the three sub-pixels has a width in the first direction different from a width in the first direction of another sub-pixel of the three sub-pixels. Each of the three sub-pixels is connected to a corresponding gate line and a corresponding data line. The polarities of the data voltages applied to a first data line and a third data line are opposite and the polarities of the data voltages applied to a second data line and a fourth data line are opposite. The pixels arranged between two adjacent data lines among the plurality of data lines are alternately connected to the two adjacent data lines.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: December 4, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Namjae Lim, Jai-Hyun Koh, Sungjae Park, Ik Soo Lee
  • Patent number: 10147777
    Abstract: A display device includes: a circuit part including at least one first region and at least one second region disposed adjacent to the first region, wherein the second region includes first pixel circuits arranged adjacent to the first region and second pixel circuits spaced apart from the first region; a display element part disposed on the circuit part, wherein a first display elements are connected to the first pixel circuits and overlap with the first region, and a second display elements are connected to the second pixel circuits; and bridge patterns electrically connecting the first and second pixel circuits and the first and second display elements, wherein the length of bridge patterns connecting the first pixel circuits and the first display elements is different from that of bridge patterns connecting the second pixel circuits and the second display elements.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: December 4, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bek Hyun Lim, Ki Nyeng Kang, Jin Koo Kang, Sun Kwang Kim
  • Patent number: 10141185
    Abstract: An oxide semiconductor includes an oxide having a layered structure expressed by an expression of a product of [(AO)(ZO)mi(BO)(ZO)ni]i from i=1 to L. In the product, an atom A is a positive monovalent element, an atom Z is a positive divalent element, an atom B is a positive trivalent element, L is a positive integer, and mi and ni are independent integers greater than or equal to zero. A sum from i=1 to L of (mi+ni) is not zero.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: November 27, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naoyuki Ueda, Yuki Nakamura, Yukiko Abe, Shinji Matsumoto, Yuji Sone, Ryoichi Saotome, Sadanori Arae, Minehide Kusayanagi
  • Patent number: 10127870
    Abstract: A liquid crystal display includes a pixel array, a gate driver, a data driver, a common voltage source, and a current duplication module. The gate driver is used to turn on a plurality of rows of pixels in the pixel array in sequence. The data driver is used to provide a plurality of data voltages to the turned-on pixels in the pixel array. The common voltage source is used to provide a common voltage. The current duplication module is coupled to a first side and a second side of the pixel array and is used to input two substantially equal currents to the first side and the second side of the pixel array respectively to provide the common voltage to the first side and the second side of the pixel array.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: November 13, 2018
    Assignee: AU OPTRONICS CORP.
    Inventors: Min-I Yang, Chang-Hui Wu
  • Patent number: 10127882
    Abstract: A method of driving a display apparatus includes determining a duration of a blank interval between a first frame and a second frame, wherein the second frame is subsequent to the first frame, and modulating a common voltage during the blank interval when the duration is longer than a first reference time, wherein an average of the common voltage is fixed during the blank interval.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: November 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ga-Na Kim, Dong-Won Park, Po-Yun Park, Jimyoung Seo, Whee-Won Lee, Bonghyun You, Jung Hwan Cho
  • Patent number: 10129492
    Abstract: An image sensor capable of implementing a global shutter mode and a rolling shutter mode is provided. The image sensor includes a row driver, a pixel array, an analog-to-digital converter, and an output compensating circuit. The row driver performs decoding for a reset operation, a transfer operation and a read operation, and generates control signals. The pixel array, in a rolling shutter mode, performs the transfer operation on a second row group while the read operation for a first row group is performed, and receives an optical signal, converts the optical signal to electrical signal, and outputs the electrical signal as an image signal in response to the control signals.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: November 13, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyuik Cho, Se-Jun Kim, Youngtae Jang, Jinho Seo, Sung-Ho Suh
  • Patent number: 10121801
    Abstract: The present invention provides a TFT array substrate, the TFT array substrate includes: a first metal layer including a first common electrode line, a second metal layer including a second common electrode line, and a third common electrode line, wherein the third common electrode line is electrically connected with at least one of the first common electrode line and the second common electrode line. The TFT array substrate provided by the present invention can achieve at least one effect of reducing the delay of a common electrode line signal (common signal), reducing flicker inequality and crosstalk without reducing the aperture ratio, lowering the cost and simplifying the manufacturing process.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 6, 2018
    Assignees: SHANGHAI AVIC OPTOELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yanli Wang, Shoufu Jian
  • Patent number: 10120504
    Abstract: There is disclosed a pixel driving circuit and its driving method, an array substrate, a transflective display apparatus.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: November 6, 2018
    Assignees: BOE Technology Group Co., Ltd., Beijing BOE Optoelectronics Technology Co., Ltd.
    Inventor: Shengji Yang
  • Patent number: 10094936
    Abstract: Disclosed is a circuit for controlling the temperature and the bias voltage of a detector used by an X-ray analytical instrument. The circuit uses a single common reference voltage for the temperature measurement and for all the ADCs and DACs in the circuit, resulting in reduced drift and improved reproducibility of detector temperature and bias voltage. ADCs with a larger number of bits are used to produce precision values of the temperature, the bias voltage, and their respective setpoints. The setpoints are digitally varied until the precision setpoint values correspond to desired values of temperature and bias setpoints.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: October 9, 2018
    Assignee: OLYMPUS SCIENTIFIC SOLUTIONS AMERICAS INC.
    Inventor: Marc Battyani
  • Patent number: 10090831
    Abstract: The present disclosure relates to a method of electrically aging a PMOS thin film transistor. The method includes applying a first voltage Vg with an amplitude of A volts to a gate of the PMOS thin film transistor; applying a second voltage Vs with an amplitude of (A?40) to (A?8) volts to a source of the PMOS thin film transistor; and applying a third voltage Vd with an amplitude of (A?80) to (A?16) volts to a drain of the PMOS thin film transistor. Application of the first voltage Vg, the second voltage Vs and the third voltage Vd is maintained for a predetermined time period, and Vd?Vs<0. In this way, reduction of a leakage current of the PMOS thin film transistor is achieved without changing a structural design of the thin film transistor.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: October 2, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Jun Wang, Xinxin Jin, Liang Sun, Yuebai Han, Guoqing Zhang
  • Patent number: 10078251
    Abstract: An array substrate and a display apparatus are provided according to embodiments of the disclosure. A pixel unit includes a first sub-pixel electrode and a second sub-pixel electrode, the first sub-pixel electrode is connected to a drain of the first TFT, and the second sub-pixel electrode is connected to a drain of the second TFT, a resistance between a source of the first TFT and the data line connected to the first TFT is greater than a resistance between a source of the second TFT and the data line connected to the second TFT, and/or, a resistance between the drain of the first TFT and the first sub-pixel electrode is greater than a resistance between the drain of the second TFT and the second sub-pixel electrode.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: September 18, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wenbo Li, Pan Li
  • Patent number: 10049619
    Abstract: A display device includes a timing controller which transmits a vertical clock signal having rising edges and falling edges to a gate driver and a gate driver which receives the vertical clock signal, to generate a first gate clock signal and a first inverted gate clock signal in accordance with one of the rising edges and the falling edges of the vertical clock signal, and to generate a second gate clock signal and a second inverted gate clock signal in accordance with a remaining one of the rising edges and the falling edges of the vertical clock signal.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: August 14, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Geun Hyuk Choi, Sang Hyun Lee, Hyo Chul Lee, Jae Ho Choi, Hyun Seok Hong
  • Patent number: 10048559
    Abstract: The present disclosure provides an array substrate. The array substrate includes a substrate having a display region with a plurality of pixel regions, each pixel region having two or more first regions; a common electrode line between two adjacent pixel regions; a gate line; a data line intersecting with the gate line; at least one of the gate line and the data line being in a second region between two adjacent first regions; and a pixel electrode having a hollowed-out pattern within a corresponding first region, pixel electrodes corresponding to the two or more first regions being a pixel electrode unit.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: August 14, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD, HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO. LTD.
    Inventor: Jideng Zhou
  • Patent number: 10043478
    Abstract: There is provided a display device comprising a display panel, wherein the display panel comprises pixels, data lines, thin film transistors including first electrodes electrically connected with the data lines, second electrodes disposed to be spaced apart from the first electrodes in a first direction, semiconductor layers overlapping the first electrodes and the second electrodes, and gate electrodes overlapping the semiconductor layers and pads electrically connected with the second electrodes, wherein the thin film transistors includes first thin film transistors and second thin film transistors, which are alternately disposed, the semiconductor layers are divided into first semiconductor layers included in the first thin film transistors and second semiconductor layers included in the second thin film transistors, which are alternately disposed, and a length of the first semiconductor layer in the first direction is larger than a length of the second semiconductor layer in the first direction.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: August 7, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jung Jun Im
  • Patent number: 10032400
    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: September 14, 2017
    Date of Patent: July 24, 2018
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Ricky Yik Hei Ngan, Nino Zahirovic, Yaser Azizi
  • Patent number: RE47257
    Abstract: A system and method for driving an AMOLED display is provided. The AMOLED display includes a plurality of pixel circuits. A voltage-programming scheme, a current-programming scheme or a combination thereof is applied to drive the display. Threshold shift information, and/or voltage necessary to obtain hybrid driving circuit may be acquired. A data sampling may be implemented to acquire a current/voltage relationship. A feedback operation may be implemented to correct the brightness of the pixel.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: February 26, 2019
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Richard I-Heng Huang, Stefan Alexander