Patents Assigned to TPO Displays Corp.
  • Patent number: 8665248
    Abstract: A drive circuit is disclosed. The drive circuit includes a first p-typed thin film transistor (PTFT), a second PTFT, a first n-typed thin film transistor (NTFT), a second NTFT and a capacitor. The drain of the first PTFT is coupled to a first electrical line, and the gate thereof is coupled to a first clock line. The drain of the second PTFT is coupled to a second clock line, and the source thereof is coupled to an output. The source of the first NTFT is coupled to a second electrical line, and the gate thereof is couple to an output of a preceding drive circuit. The source of the second NTFT is couple to a third electrical line, the gate thereof is coupled to a third clock line, and the drain thereof is coupled to the output. The capacitor has one end coupled to the second electrical line, while the other end is coupled to the source of the first PTFT, the drain of the first NTFT and the gate of the second PTFT.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: March 4, 2014
    Assignee: TPO Displays Corp.
    Inventor: Keitaro Yamashita
  • Patent number: 8477129
    Abstract: A system for displaying images is provided. The system comprises a reference voltage source, a digital-to-analog converter, a multiplier and a buffer. The reference voltage source outputs a voltage signal, wherein the magnitude of the voltage signal is 1/N of a driving voltage. The digital-to-analog converter converts the voltage signal to a first voltage. The multiplier receives and multiplies the first voltage by N to output the driving voltage. The buffer receives the driving voltage to drive a data line.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: July 2, 2013
    Assignee: TPO Displays Corp.
    Inventors: Fu-Yuan Hsueh, Kai-Chieh Yang
  • Patent number: 8471982
    Abstract: A system for displaying images including a liquid crystal display panel is provided. The liquid crystal display panel includes a first substrate having at least one sub-pixel, a first transparent electrode layer disposed over the first substrate in the sub-pixel, a second substrate having an inner surface corresponding to the first substrate, a second transparent electrode layer disposed over the inner surface corresponding to the sub-pixel, wherein the second transparent electrode layer has only one pattern thereon, and a liquid crystal layer disposed between the first and the second substrates. The liquid crystal layer includes a plurality of liquid crystal molecules and the liquid crystal molecules are orthogonal to the first and the second substrates.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: June 25, 2013
    Assignee: TPO Displays Corp.
    Inventors: Hao-Chun Lee, Wei-Chuan Huang
  • Patent number: 8395573
    Abstract: This present invention provides a liquid crystal display (LCD) device in which the sub-pixel is provided with three different voltage levels, so that image quality is improved without the configuration of additional gate lines. The present invention overcomes the reduction of aperture ratio in conventional LCD devices due to the configuration of additional gate lines. By the present invention, the white washout problem relating to the off-axis viewing angle can be overcome while the aperture ratio is not reduced.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: March 12, 2013
    Assignee: TPO Displays Corp.
    Inventors: Minoru Shibazaki, Keitaro Yamashita
  • Patent number: 8334861
    Abstract: A display device includes a display panel. The display panel has a visible-light transmissible polarizer at a side of receiving an external light, and includes a first optical sensor, a second optical sensor and a sensor output computing part. The first optical sensor is disposed on a substrate of the display panel and unsheltered by the polarizer for detecting the external light. The first optical sensor outputs a first signal in response to a detected wavelength component of the external light. The second optical sensor is disposed on the substrate of the display panel and sheltered by the polarizer for detecting a visible light passing through the polarizer. The second optical sensor outputs a second signal in response to a detected wavelength component of the visible light. According to the first signal and the second signal, the sensor output computing part computes a UV light intensity of the external light.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: December 18, 2012
    Assignee: TPO Displays Corp.
    Inventor: Kazuyuki Hashimoto
  • Patent number: 8304988
    Abstract: The present invention relates to a tandem organic light emitting device, which reduces the driving voltage by using a non-doping material having both the electron transporting and hole transporting abilities to act, respectively, as an electron transporting layer and a hole transporting layer that are in contact with the connecting layer. The tandem organic light emitting device does not have to double its driving voltage as a result of the increasing of the number of the emitting element contained therein. However, the brightness and the current efficiency of the device of the present invention will be higher than the theoretical fold value calculated in accordance with the number of emitting element contained in the device.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: November 6, 2012
    Assignee: TPO Displays Corp.
    Inventors: Yu-Ting Lin, Hsiang-Lun Hsu
  • Patent number: 8284360
    Abstract: A liquid crystal display (LCD) panel and a fabricating method thereof are described. First, a first substrate and a second substrate are provided. A liquid crystal monomer layer is then formed on the surface of at least one of the first and second substrates. Next, a curing step is performed to the liquid crystal monomer layer to induce a polymerization reaction, so as to form a liquid crystal polymer layer. Thereafter, the first and second substrates are assembled and a liquid crystal layer is filled between the first and second substrates.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: October 9, 2012
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute, TPO Displays Corp.
    Inventors: Tsan-Yu Ho, Ding-Jen Chen, Hsin-Chun Chiang, Mei-Ju Lee, Bang-Hao Wu
  • Publication number: 20120214377
    Abstract: A liquid crystal display (LCD) panel and a fabricating method thereof are described. First, a first substrate and a second substrate are provided. A liquid crystal monomer layer is then formed on the surface of at least one of the first and second substrates. Next, a curing step is performed to the liquid crystal monomer layer to induce a polymerization reaction, so as to form a liquid crystal polymer layer. Thereafter, the first and second substrates are assembled and a liquid crystal layer is filled between the first and second substrates.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 23, 2012
    Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, TPO DISPLAYS CORP., CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, HANNSTAR DISPLAY CORPORATION
    Inventors: Tsan-Yu Ho, Ding-Jen Chen, Hsin-Chun Chiang, Mei-Ju Lee, Bang-Hao Wu
  • Patent number: 8215969
    Abstract: A contact structure disposed on a substrate is provided. The contact structure includes a pad, a polymer bump and a conductive layer. The pad is on the substrate. The polymer bump having a curve surface and a steep surface connecting with the curve surface is disposed on the substrate. The polymer bump is covered by the conductive layer and the conductive layer is electrically connected with the pad.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: July 10, 2012
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute, TPO Displays Corp.
    Inventors: Sheng-Shu Yang, Shyh-Ming Chang
  • Patent number: 8211788
    Abstract: A method of fabricating a bonding structure having compliant bumps includes first providing a first substrate and a second substrate. The first substrate includes first bonding pads. The second substrate is disposed on one side of the first substrate and includes second bonding pads and compliant bumps disposed thereon. The second bonding pads are opposite to the first bonding pads. Next, a non-conductive adhesive layer and ball-shaped spacers are formed between the first and the second substrates. Finally, the first substrate, the non-conductive adhesive layer, and the second substrate are compressed, such that the compliant bumps on the second bonding pads of the second substrate pass through the non-conductive adhesive layer and are electrically connected to the first bonding pads of the first substrate, respectively. The ball-shaped spacers are distributed in the non-conductive adhesive layer sandwiched between the first and the second substrates for maintaining the gap therebetween.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: July 3, 2012
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research, TPO Displays Corp.
    Inventors: Shyh-Ming Chang, Sheng-Shu Yang
  • Patent number: 8178288
    Abstract: A method for fabricating a display substrate is provided. A substrate is provided first. After that, an alignment film coating and an alignment treatment are performed to the substrate, and a layer of photoreactive monomer material is coated on the surface of the substrate after the alignment treatment. Thereafter, the layer of photoreactive monomer material is selectively irradiated by UV light in an exposed region, and the layer of photoreactive monomer material in an unexposed region is removed for liquid crystal molecules to have different pretilt angles in the exposed region and the unexposed region.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: May 15, 2012
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute, TPO Displays Corp.
    Inventors: Ze-Yu Yen, Ding-Jen Chen, Ya-Ting Wu, Jian-Lung Chen
  • Patent number: 8106389
    Abstract: A thin film transistor is provided. The thin film transistor includes a substrate, a gate, a source/drain, an insulating layer, and a semiconductor active layer. The gate and the source/drain are respectively deposited on the substrate and are separated by the insulating layer on the substrate. The semiconductor active layer connects the source and the drain. The material of the semiconductor active layer is a semiconductor precursor which produces semiconductor property after being irradiated by a light source. A liquid crystal display which includes the above thin film transistor is also provided.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: January 31, 2012
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute, TPO Displays Corp.
    Inventors: Hsiang-Yuan Cheng, Shin-Chuan Chiang, Shih-Hsiang Lai, Chin-Chih Yu, Bor-Chuan Chuang
  • Publication number: 20110306154
    Abstract: A method of forming a display device is provided.
    Type: Application
    Filed: August 19, 2011
    Publication date: December 15, 2011
    Applicant: TPO DISPLAYS CORP.
    Inventors: Tsung-Yen LIN, Chih-Hung PENG, Chien-Peng WU, Shan-Hung TSAI, Yi Chun YEH
  • Patent number: 8044700
    Abstract: An exemplary embodiment of such a system includes: a level shifter operative to transform an input signal into an output signal, the level shifter includes: a voltage distributor operative to receive the input signal and distribute potential levels at a first node and a second node to respectively output a first signal and a second signal, and the voltage distributor includes: a current limiter, operative to provide a limited current passing through the first node; a switch, operative to selectively establish an electrical connection between the first node and the second node; and a first transistor having a first electrode, a second electrode, and a first control electrode, wherein the first electrode is connected to the second node, the second electrode is utilized to receive the input signal, and the first control electrode is coupled to the first node; and an output circuit, operative to generate the output signal.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: October 25, 2011
    Assignee: TPO Displays Corp.
    Inventor: Ching-Hone Lee
  • Patent number: 8030143
    Abstract: A method of forming a display device is provided.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: October 4, 2011
    Assignee: TPO Displays Corp.
    Inventors: Tsung-Yen Lin, Chih-Hung Peng, Chien-Peng Wu, Shan-Hung Tsai, Yi Chun Yeh
  • Publication number: 20110109670
    Abstract: An active matrix display panel comprises a substrate, an array of pixel circuits being arranged in a matrix of at least one column and a plurality of rows on the substrate, each pixel circuit comprising a light-emitting element, capable of emitting light of an intensity determined by the value of a current passed through it, and at least one column line, each column line arranged to conduct a reference current, provided by a current driving circuit, when connected to the panel. The pixel circuits in a column are divided into a plurality of groups of at least one pixel circuit. The active matrix display panel comprises at least one current mirror circuit associated with a first group, comprising a first current mirror, arranged to mirror a reference current flowing through a column line to a first current mirror output.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 12, 2011
    Applicant: TPO Displays Corp.
    Inventors: Adrianus Sempel, Gerben J. Hekstra, David A. Fish, Alan G. Knapp, Andrea Giraldo, Mark T. Johnson
  • Patent number: 7924269
    Abstract: Display devices and methods forming the same. A digitizer sensor board is integrated on an upper substrate or a lower substrate of a display panel to provide a display device. In the display device, the display panel displays images, and the digitizer sensor board is integrated into the display panel to sense position of a position pointer or finger contact on a surface.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: April 12, 2011
    Assignee: TPO Displays Corp.
    Inventors: Din-Guo Chen, Ying-Chih Lee, Shyuan-Jeng Ho
  • Publication number: 20110075071
    Abstract: A method of manufacturing a light guide for a backlight module in a liquid crystal display module is provided. The method includes the following steps: providing a foil; and pressing the foil at a first temperature above a glass transition temperature of a material of the foil to form a thickness profile of the light guide.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 31, 2011
    Applicants: TPO Displays Corp., Vitalo Plastics N.V.
    Inventors: Serge Toussaint, Frans Verweg, Michiel Vanneste, Jozef Gawron, Didier Servaas A. Leclercq
  • Publication number: 20110074751
    Abstract: A contrast ratio improving device includes a controller and a photo detector. A contrast ratio improving method for use with a display panel includes the following steps. Firstly, multiple voltage values are applied to the display panel. Then, the brightness values corresponding to the voltage values applied to the display panel are detected. Afterwards, a voltage value corresponding to a specified value of the brightness values is selected as a peak voltage of the display panel. An image display system is also provided. The image display system includes a display panel and a memory. The memory stores a peak voltage obtained by the contrast ratio improving method.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Applicant: TPO DISPLAYS CORP.
    Inventors: Jian-xun JIANG, Square WANG
  • Patent number: 7916112
    Abstract: Systems for controlling pixels are provided. A representative system comprises a scan driver comprises: a data signal line operative to provide data to the pixel; and a scan driver operative to control illumination of the pixel during sequential time periods such that, if data provided by the data signal line is different between a first time period and a second time period, brightness of the pixel differs during a third time period and a sequential fourth time period. The pixel is illuminated during the third time period and the fourth time period.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: March 29, 2011
    Assignee: TPO Displays Corp.
    Inventors: Du-Zen Peng, Shih-Chang Chang