Patents by Inventor Zhangtao Wang

Zhangtao Wang 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: 20100270556
    Abstract: A TFT LCD array substrate and a manufacturing method thereof. The TFT LCD array substrate comprises a substrate. A gate line and a gate electrode that is formed integrally with the gate line are formed on the substrate. A first insulating layer and a semiconductor layer are formed sequentially on the gate line and the gate electrode. A second insulting layer covers sidewalls of the gate line and the gate electrode, the first insulating layer, and the semiconductor layer. An etching stop layer is formed on the semiconductor layer and exposes a part of the semiconductor layer on both sides of the etching stop layer. The TFT LCD of the present invention can be manufactured with a four-mask process.
    Type: Application
    Filed: July 6, 2010
    Publication date: October 28, 2010
    Inventors: Zhangtao Wang, Haijun Qiu, Tae Yup Min, Seung Moo Rim
  • Patent number: 7776662
    Abstract: A TFT LCD array substrate and a manufacturing method thereof. The TFT LCD array substrate comprises a substrate. A gate line and a gate electrode that is formed integrally with the gate line are formed on the substrate. A first insulating layer and a semiconductor layer are formed sequentially on the gate line and the gate electrode. A second insulting layer covers sidewalls of the gate line and the gate electrode, the first insulating layer, and the semiconductor layer. An etching stop layer is formed on the semiconductor layer and exposes a part of the semiconductor layer on both sides of the etching stop layer. The TFT LCD of the present invention can be manufactured with a four-mask process.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: August 17, 2010
    Assignee: Beijing BOE Optoelectronics Technology Co., Ltd
    Inventors: Zhangtao Wang, Haijun Qiu, Tae Yup Min, Seung Moo Rim
  • Patent number: 7687330
    Abstract: A thin film transistor liquid crystal display (TFT-LCD) pixel structure comprising: a gate line and a gate electrode formed on a substrate; a first insulating layer, a semiconductor layer, and a doped semiconductor layer formed sequentially on the gate electrode and the gate line, wherein an isolating groove is formed above the gate line which disconnects the semiconductor layer on the gate line; a second insulating layer covering the isolating groove and a portion of the substrate where the gate line and the gate are not formed; a pixel electrode formed on the second insulating layer, wherein the pixel electrode is integral with a drain electrode and is connected with the doped semiconductor layer on the gate electrode at a place where the drain electrode is formed; a source electrode, which is a portion of a data line, formed on the doped semiconductor layer; and a channel formed between the source electrode and the drain electrode.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: March 30, 2010
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Haijun Qiu, Zhangtao Wang, Tae Yup Min
  • Patent number: 7636135
    Abstract: A TFT-LCD array substrate and a method for manufacturing the same are disclosed. In the TFT-LCD array substrate, a first insulating layer, a semiconductor layer, and an ohmic contact layer are formed sequentially on the gate line and the gate electrode, and the ohmic contact layer is formed on the source region and the drain region of the semiconductor layer and exposes the channel; a second insulating layer is formed on the substrate, covers the sidewalls of the gate line and gate electrode, the first insulating layer, the semiconductor layer, and the ohmic contact layer, and exposes the ohmic contact layer in the source region and the drain region; the data line, the source electrode, the pixel electrode, and the drain electrode are formed on the second insulating layer; a passivation layer is formed on the TFT, the gate line, and the data line and exposes the pixel electrode.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: December 22, 2009
    Assignee: Beijing BOE Optoelectronics Technology Co., Ltd
    Inventors: Zhangtao Wang, Haijun Qiu, Tae Yup Min, Seung Moo Rim
  • Publication number: 20090236605
    Abstract: A thin film transistor liquid crystal display (TFT-LCD) pixel structure comprising: a gate line and a gate electrode formed on a substrate; a first insulating layer, a semiconductor layer, and a doped semiconductor layer formed sequentially on the gate electrode and the gate line, wherein an isolating groove is formed above the gate line which disconnects the semiconductor layer on the gate line; a second insulating layer covering the isolating groove and a portion of the substrate where the gate line and the gate are not formed; a pixel electrode formed on the second insulating layer, wherein the pixel electrode is integral with a drain electrode and is connected with the doped semiconductor layer on the gate electrode at a place where the drain electrode is formed; a source electrode, which is a portion of a data line, formed on the doped semiconductor layer; and a channel formed between the source electrode and the drain electrode.
    Type: Application
    Filed: November 13, 2008
    Publication date: September 24, 2009
    Inventors: Haijun QIU, Zhangtao WANG, Tae Yup MIN
  • Publication number: 20090225249
    Abstract: A thin film transistor (TFT) array substrate for a liquid crystal display comprises a gate line and a data line formed in a display region, a gate connecting line and a data connecting line formed in a PAD region, and a TFT formed at an intersection between the gate line and the data line. The TFT comprises a gate electrode on a base substrate, a gate insulating layer on the gate electrode, a semiconductor layer on the gate insulating layer, a doped semiconductor layer on the semiconductor layer, and a source electrode and a drain electrode that are on the doped semiconductor layer, and a TFT channel is defined in the semiconductor layer between the source electrode and the drain electrode. The array substrate further comprises a passivation layer that is formed on the source electrode and the drain electrode and a pixel electrode, a portion of which is formed under the drain electrode and connected with the drain electrode.
    Type: Application
    Filed: November 13, 2008
    Publication date: September 10, 2009
    Inventors: Zhangtao WANG, Haijun QIU, Tae Yup MIN
  • Publication number: 20090039354
    Abstract: Provided are a thin film transistor (TFT) array substrate and the method manufacturing thereof. The TFT array substrate comprising: a substrate, and a gate line and a data line formed on the substrate, the gate line and the data line being separated by a gate insulating layer therebetween and intersecting to define a pixel unit, the pixel unit at least including a TFT device and a pixel electrode. The data line and a source electrode of the thin film transistor device are formed as an integral structure, and an active layer is formed below both the data line and the source electrode of the thin film transistor device.
    Type: Application
    Filed: May 22, 2008
    Publication date: February 12, 2009
    Inventors: Zhangtao WANG, Xiang LIU, Haijun QIU
  • Publication number: 20080164470
    Abstract: A TFT array substrate and a manufacturing method thereof, where the TFT array substrate includes a substrate; a gate line and a gate electrode integrated therewith, which are covered by a gate insulating layer, a semiconductor layer, and a ohmic contact layer sequentially. An insulating layer is formed on the resulting substrate and on both sides of the gate line and the gate electrode, the gate insulating layer, the semiconductor layer, and the ohmic contact layer. A trench is then formed in the ohmic contact layer to divide the ohmic contact layer over the semiconductor layer. A data line and first and second source/drain electrodes are then formed on the insulating layer and the ohmic contact layer.
    Type: Application
    Filed: December 18, 2007
    Publication date: July 10, 2008
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhangtao WANG, Haijun Qiu, Tae Yup Min, Seung Moo Rim
  • Publication number: 20080142802
    Abstract: A thin film transistor liquid crystal display (TFT-LCD) pixel unit and a method for manufacturing the same. The pixel unit comprises a gate line and a gate electrode formed on a substrate and a first gate insulating layer, an active layer, and a doped layer that are sequentially formed on the gate line and the gate electrode. An intercepting trench is formed on the gate line to cut off the doped layer and the active layer on the gate line. A second insulating layer covers the intercepting trench and the substrate where the gate line and the gate electrode are not formed. A pixel electrode is formed on the second insulating layer and a part of the pixel electrode overlaps one of a source and drain electrodes.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 19, 2008
    Inventors: Haijun Qiu, Zhangtao Wang, Tae Yup Min, Xu Chen
  • Publication number: 20080111136
    Abstract: A thin film transistor liquid crystal display (TFT-LCD) pixel unit and a method for manufacturing the same. The pixel unit comprises a gate line and a gate electrode formed on a substrate and a first gate insulating layer, an active layer, and a doped layer sequentially that are formed on the gate line and the gate electrode. An intercepting trench is formed on the gate line to cut off the doped layer and the active layer on the gate line. A second insulating layer covers the intercepting trench and the substrate where the gate line and the gate electrode are not formed. A pixel electrode is formed on the second insulating layer and is integrated with the second source/drain electrode.
    Type: Application
    Filed: November 12, 2007
    Publication date: May 15, 2008
    Inventors: Haijun Qiu, Zhangtao Wang, Tae Yup Min
  • Publication number: 20080105873
    Abstract: A TFT LCD array substrate and a manufacturing method thereof. The TFT LCD array substrate comprises a substrate. A gate line and a gate electrode that is formed integrally with the gate line are formed on the substrate. A first insulating layer and a semiconductor layer are formed sequentially on the gate line and the gate electrode. A second insulting layer covers sidewalls of the gate line and the gate electrode, the first insulating layer, and the semiconductor layer. An etching stop layer is formed on the semiconductor layer and exposes a part of the semiconductor layer on both sides of the etching stop layer. The TFT LCD of the present invention can be manufactured with a four-mask process.
    Type: Application
    Filed: November 5, 2007
    Publication date: May 8, 2008
    Inventors: Zhangtao Wang, Haijun Qiu, Tae Yup Min, Seung Moo Rim
  • Publication number: 20080061295
    Abstract: A TFT-LCD array substrate and a method for manufacturing the same are disclosed. In the TFT-LCD array substrate, a first insulating layer, a semiconductor layer, and an ohmic contact layer are formed sequentially on the gate line and the gate electrode, and the ohmic contact layer is formed on the source region and the drain region of the semiconductor layer and exposes the channel; a second insulating layer is formed on the substrate, covers the sidewalls of the gate line and gate electrode, the first insulating layer, the semiconductor layer, and the ohmic contact layer, and exposes the ohmic contact layer in the source region and the drain region; the data line, the source electrode, the pixel electrode, and the drain electrode are formed on the second insulating layer; a passivation layer is formed on the TFT, the gate line, and the data line and exposes the pixel electrode.
    Type: Application
    Filed: September 11, 2007
    Publication date: March 13, 2008
    Inventors: Zhangtao Wang, Haijun Qiu, Tae Yup Min, Seung Moo Rim
  • Publication number: 20080030639
    Abstract: A pixel unit of TFT-LCD array substrate and a manufacturing method thereof is disclosed. In the manufacturing method, besides a first insulating layer and a passivation layer, a second insulating layer is adopted to cover the gate island, and forms an opening on the gate island to expose the channel region, the source region and the drain region of the TFT. A gray tone mask and a photoresist lifting-off process are utilized to perform patterning, so that the TFT-LCD array substrate can be achieved with just three masks.
    Type: Application
    Filed: August 6, 2007
    Publication date: February 7, 2008
    Inventors: Haijun Qiu, Zhangtao Wang, Xu Chen, Tae Yup Min