Patents by Inventor Rong Han

Rong Han has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130256666
    Abstract: A thin film transistor and a manufacturing method thereof are provided. The thin film transistor includes a gate, an oxide channel layer, a gate insulating layer, a source, a drain and a dielectric layer. The gate is disposed on a substrate. The oxide channel layer, disposed on the substrate, is stacked with the gate. A material of the oxide channel layer includes a metal element. The metal element content shows a gradient distribution along a thickness direction of the oxide channel layer. The gate insulation layer is disposed between the gate and the oxide channel layer. The source and the drain are disposed in parallel to each other, and connected to the oxide channel layer. Sides of the source and the drain, facing away from the substrate, are covered by the dielectric layer.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 3, 2013
    Applicants: WINTEK CORPORATION, Dongguan Masstop Liquid Crystal Display Co., Ltd.
    Inventors: Hui-Yu Chang, Ming-Chang Yu, Chang-Ching Chiou, Hsi-Rong Han
  • Publication number: 20130242220
    Abstract: The present invention provides a thin-film transistor disposed on a substrate. The thin-film transistor includes a gate, a first insulating layer, a metal-oxide semiconductor pattern, a source, a drain, and a second insulating layer. The gate is disposed on the substrate, and the first insulating layer covers the gate. The source and the drain are disposed on the first insulating layer. The metal-oxide semiconductor pattern is disposed on the substrate, and the second insulating layer covers the metal-oxide semiconductor pattern.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 19, 2013
    Applicants: WINTEK CORPORATION, WINTEK (CHINA) TECHNOLOGY LTD.
    Inventors: Hui-Yu Chang, Ming-Chang Yu, Hsi-Rong Han, Wen-Chun Wang
  • Publication number: 20130221397
    Abstract: A light emitting element structure and a circuit thereof are provided. The light emitting element circuit includes a driving unit and a light emitting element. The driving unit is used for generating a driving current at a light emission period. The light emitting element includes a current transferring unit and a light emitting unit. The current transferring unit is connected with the driving unit to transfer the driving current and generate a light emitting current at the light emission period. The light emitting unit is connected with the current transferring unit and emits light in response to the light emitting current. The light emitting unit is connected with the current transferring unit and emits light in response to the light emitting current.
    Type: Application
    Filed: February 22, 2013
    Publication date: August 29, 2013
    Applicant: WINTEK CORPORATION
    Inventors: Hieng-Hsiung Huang, Chun-Ming Huang, Wen-Chun Wang, David Stevenson, Cheng-Yi Cheng, Hsi-Rong Han
  • Patent number: 8456408
    Abstract: A shift register includes multiple stages each generating a scan signal at an output terminal and including a level pull-up circuit, a level pull-down circuit, a driving circuit and a level controlling circuit. The level pull-up circuit makes the scan signal equal a first clock signal in response to an enabled level of a first control signal. The level pull-down circuit makes the scan signal equal a first voltage in response to an enabled level of a second control signal. The driving circuit controls the first control signal to be the enabled level and a disabled level in response to an enabled level of an input signal and the enabled level of the second control signal, respectively. The level controlling circuit controls the second control signal to be the disabled level and the enabled level in response to the enabled level and the disabled level of the input signal, respectively.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: June 4, 2013
    Assignee: Wintek Corporation
    Inventors: Chien-Ting Chan, Hsi-Rong Han, Wen-Chun Wang
  • Publication number: 20130120342
    Abstract: An organic light emitting diode (OLED) pixel circuit is provided by the invention. If a circuit configuration (5T2C) thereof collocates with suitable operation waveforms, a current flowing through an OLED in the OLED pixel circuit may not be changed with a power supply voltage (Vdd) influenced by an IR drop, and may not be varied with a threshold voltage (Vth) shift of a thin-film-transistor (TFT) configured for driving the OLED. Accordingly, brightness uniformity of an OLED display applying the same can be substantially improved.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 16, 2013
    Inventors: Wen-Chun Wang, Hsi-Rong Han, Wen-Tui Liao, Chih-Hung Huang, Tsung-Yu Wang
  • Publication number: 20130088165
    Abstract: An organic light-emitting diode (OLED) pixel circuit is provided, and if a circuit configuration (5T1C) thereof collocates with suitable operation waveforms, a current flowing through an OLED in the OLED pixel circuit may not be changed along with the power supply voltage (Vdd) which may be influenced by an IR drop, and may not be varied along with the threshold voltage (Vth) shift of a thin film transistor used for driving the OLED. Accordingly, the brightness uniformity of the applied OLED display can be substantially improved.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 11, 2013
    Inventors: Wen-Chun Wang, Hsi-Rong Han, Wen-Tui Liao, Chih-Hung Huang, Tsung-Yu Wang
  • Publication number: 20130088474
    Abstract: A pixel circuit related to an organic light emitting diode (OLED) is provided, and if a circuit configuration (5T1C) thereof collocates with suitable operation waveforms, a current flowing through an OLED in the OLED pixel circuit is not varied along with a threshold voltage (Vth) shift of a TFT used for driving the OLED. Accordingly, the brightness uniformity of the applied OLED display is substantially improved.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 11, 2013
    Inventors: Wen-Chun Wang, Hsi-Rong Han, Wen-Tui Liao, Chih-Hung Huang, Tsung-Yu Wang
  • Publication number: 20130069852
    Abstract: A pixel circuit related to an organic light-emitting diode (OLED) is provided. When signals having appropriate operation waveforms are supplied, the circuit configuration (7T1C or 5T1C) of the pixel circuit keeps the current flowing through an OLED unaffected by the impact of IR drop on a power supply voltage Vdd (or mitigates the impact of the power supply voltage Vdd on the current) and prevents the current flowing through the OLED from changing with the Vth shift of a TFT for driving the OLED. Thereby, the luminance uniformity of an OLED display adopting the pixel circuit is greatly improved.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 21, 2013
    Applicant: WINTEK CORPORATION
    Inventors: Wen-Tui Liao, Wen-Chun Wang, Hsi-Rong Han, Chih-Hung Huang
  • Patent number: 8300001
    Abstract: A demultiplexer drive circuit includes a first, a second, a third, a fourth, and a fifth switching devices. The first switching device is connected to the first and the second scan clock signals. The control terminal of the second switching device is connected to the first switching device, and the rest of its terminals are connected to the data line and a first pixel electrode. The control terminal of the third switching device is connected to the first switching device, and the rest of its terminals are connected to the data line and a second pixel electrode. The fourth switching device is connected to the first and the second scan clock signals and its control terminal is connected to the third switching device. The control terminal of the fifth switching device is connected to the fourth switching device, and the rest of its terminals are connected to the data line and a third pixel electrode.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 30, 2012
    Assignee: Wintek Corporation
    Inventors: Hsi-Rong Han, Chien-Ting Chan
  • Publication number: 20120206434
    Abstract: A shift register comprises many stages, and each of stages comprises a first, a second and a third level control unit and a first and a second control unit is provided. The first and the second level control unit respectively provides a first clock signal and a voltage to an output terminal. The first driving unit and the level control unit are coupled to a first node. The first driving unit turns on and turns off the first level control unit in response to an input signal, a second control signal and a first control signal of the next stage. The second driving unit turns on and turns off the second level control unit in response to the first control signal. The third level control unit provides a first voltage to the output terminal in response to the second control signal and the first control signal.
    Type: Application
    Filed: April 24, 2012
    Publication date: August 16, 2012
    Applicant: WINTEK CORPORATION
    Inventors: Yi-Cheng Tsai, Wen-Chun Wang, Hsi-Rong Han, Chien-Ting Chan
  • Publication number: 20120169576
    Abstract: A display panel including a first substrate, a second substrate, a liquid crystal layer, a pixel structure array, a common electrode layer, and spacers is provided. The liquid crystal layer is disposed between the first substrate and the second substrate opposite thereto. The pixel structure array disposed on the first substrate is located between the liquid crystal layer and the first substrate and includes scan lines, data lines, active devices, and pixel electrodes. Each active device is connected to one scan line and one data line intersected therewith. Each pixel electrode crosses over one data line and one active device and is electrically connected to the corresponding one active device. The common electrode layer is disposed on the second substrate. The spacers disposed between the first substrate and the second substrate are located above the scan lines. The spacers are respectively located at centers of the pixel electrodes.
    Type: Application
    Filed: December 23, 2011
    Publication date: July 5, 2012
    Applicants: WINTEK CORPORATION, WINTEK (CHINA) TECHNOLOGY LTD.
    Inventors: Wen-Chun Wang, Ming-Chang Yu, Wan-Jen Tsai, Min-Shian Tsai, Hsi-Rong Han
  • Patent number: 8213090
    Abstract: An electrowetting pixel structure includes a substrate, a hydrophobic dielectric layer, a non-polar liquid, a polar liquid, at least one electrode, and at least one contact hole. The hydrophobic dielectric layer is formed on the substrate, the non-polar liquid covers one surface of the hydrophobic dielectric layer, and the polar liquid is provided on the hydrophobic dielectric layer where the non-polar liquid and the polar liquid are immiscible. The electrode is formed on the substrate and divides the substrate into an electrode section and a non-electrode section. When a voltage is applied to the electrowetting pixel structure, the non-polar liquid contracts on the hydrophobic dielectric layer and is confined to an area substantially overlapping the non-electrode section. The contact hole is formed on the substrate at a position away from the non-electrode section of the electrowetting pixel structure.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 3, 2012
    Assignees: Wintek Corporation, Industrial Technology Research Institute
    Inventors: Chih-Yuan Wang, Hsi-Rong Han, Chien-Ting Chan, Wan-Jen Tsai, Wei-Yuan Cheng, Kuo-Lung Lo
  • Patent number: 8208598
    Abstract: A shift register comprises many stages, and each of stages comprises a first, a second and a third level control unit and a first and a second control unit is provided. The first and the second level control unit respectively provides a first clock signal and a voltage to an output terminal. The first driving unit and the level control unit are coupled to a first node. The first driving unit turns on and turns off the first level control unit in response to an input signal, a second control signal and a first control signal of the next stage. The second driving unit turns on and turns off the second level control unit in response to the first control signal. The third level control unit provides a first voltage to the output terminal in response to the second control signal and the first control signal.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: June 26, 2012
    Assignee: Wintek Corporation
    Inventors: Yi-Cheng Tsai, Wen-Chun Wang, Hsi-Rong Han, Chien-Ting Chan
  • Publication number: 20120086655
    Abstract: A touch display panel including a first substrate, a second substrate, a touch sensing structure, a decoration film, an organic light emitting diode pixel array, and a sealant is provided. The touch sensing structure is disposed on the first substrate. The second substrate is opposite to a surface of the first substrate disposed with the touch sensing structure. The decoration film is disposed on the first substrate. The organic light emitting diode pixel array is located between the touch sensing structure and the second substrate. The sealant is disposed between the first substrate and the second substrate and seals the organic light emitting diode pixel array between the first substrate and the second substrate.
    Type: Application
    Filed: October 4, 2011
    Publication date: April 12, 2012
    Applicants: WINTEK CORPORATION, DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Wen-Chun Wang, Chin-Chang Liu, Kuo-Chang Su, Hsi-Rong Han
  • Publication number: 20120032175
    Abstract: A display structure includes a first transparent substrate, a second transparent substrate opposite the first transparent substrate, a display medium interposed between the first transparent substrate and the second transparent substrate, at least one first thin film transistor formed on the first transparent substrate, a first insulation layer formed on the first transparent substrate, a first electrode layer formed on the first insulation layer, an organic light-emitting layer formed on the first electrode layer and in a region not overlapping the first thin film transistor, a cathode layer formed on the organic light-emitting layer, and a second electrode layer formed on the second transparent substrate.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 9, 2012
    Inventors: Wen-Chun WANG, Hsi-Rong Han, Hsien-Wei Chiang, Wen-Tui Liao
  • Patent number: 8081176
    Abstract: A photosensor for a display device includes a light receiver, a reset unit, and a sample unit. The light receiver is used for receiving ambient light to generate a photovoltage. The light receiver includes a first transistor and a first conversion unit that transforms the output of the first transistor into the photovoltage. The reset unit is used for providing an initiated reference voltage in response to a reset signal and includes a second transistor and a third transistor that are connected with each other, where the first conversion unit is discharged through the third transistor to obtain the initiated reference voltage when the second transistor is turned on. The sample unit is used for outputting the photovoltage in respond to a sample signal, the sample unit comprising a fourth transistor in respond to the sample signal and a second conversion unit that transforms the output of the fourth transistor into the photovoltage.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: December 20, 2011
    Assignee: Wintek Corporation
    Inventors: Hsi-Rong Han, Chien-Ting Chan
  • Patent number: 8055695
    Abstract: A shift register has shift register units. The nth shift register unit includes first to third level control units and first and second driving units. The first and second level control units respectively provide a first clock signal and a first voltage to an output terminal. The first driving unit and the first level control unit are coupled to a first node, and a voltage on the first node is a first control signal. The first driving unit turns on and off the first level control unit in response to an input signal and second and third control signals. The second driving unit turns on and off the second level control unit in response to the first control signal. The third level control unit provides the first voltage to the output terminal in response to a front edge of the first control signal of the (n+2)th shift register unit.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: November 8, 2011
    Assignee: Wintek Corporation
    Inventors: Yi-Cheng Tsai, Wen-Chun Wang, Hsi-Rong Han, Chien-Ting Chan
  • Patent number: 8045675
    Abstract: A bi-directional shift register includes N stages, wherein the mth stage among the N stages includes a node, an output end, first input circuit, second input circuit, and a shift register unit. N is a natural number greater than 1 and m is a natural number smaller than or equal to N. First control signal is measured on the node. The output end outputs an mth output signal. The first input circuit receives an m?1th output signal as a control signal and a power signal to accordingly generate an enabled first driving signal to the node in first period. The second input circuit receives an m+1th output signal as a control signal and a power signal to accordingly generate an enabled second driving signal to the node in second period. Controlled by the first control signal, the shift register unit generates an mth output signal in third period.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: October 25, 2011
    Assignees: Dongguan Masstop Liquid Crystal Display Co., Ltd., Wintek Corporation
    Inventors: Chien-Ting Chan, Hsi-Rong Han, Wen-Chun Wang
  • Patent number: 8018423
    Abstract: A shift register is for generating scan signals. Each stage of the shift register comprises a first level lifting unit and at least a second level lifting unit, a first level lowering unit and at least a second level lowering unit, first and second driving units. The first level lowering and lifting units are for controlling the levels of signals at the first output terminal to output a first scan signal. The second level lowering unit and second level lifting unit are for controlling the levels of signals at the second output terminal to output at least a second scan signal. The first and second driving units are for turning on and off the first and the second level lifting units and the first and the second level lowering unit to control the first and second scan signals.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: September 13, 2011
    Assignee: Wintek Corporation
    Inventors: Yi-Cheng Tsai, Chien-Ting Chan, Hsi-Rong Han, Wen-Chun Wang, Kuo-Chang Su
  • Publication number: 20110157528
    Abstract: A display panel includes a first substrate, a conductive light-shielding pattern, color filter patterns, a second substrate, scan lines, data lines, pixel structures, third pads and fourth pads. The conductive light-shielding pattern disposed on the first substrate defines conductive matrix pattern, first pads, and second pads. Each first pad is electrically connected to one corresponding second pad through the conductive matrix pattern and insulated with other second pads. The color filter patterns are disposed on the first substrate and a portion of each color filter pattern overlaps the conductive light-shielding pattern. The third pads are one-to-one electrically to the first pads while the fourth pads are one-to-one electrically connected to the second pads. Each fourth pad is electrically connected to one of the scan lines and one of the data lines.
    Type: Application
    Filed: December 29, 2010
    Publication date: June 30, 2011
    Applicant: WINTEK CORPORATION
    Inventors: Wen-Chun Wang, Hsi-Rong Han, Yung-Cheng Chang, Ming-Chang Yu, Wan-Jen Tsai, Fa-Chen Wu