Patents by Inventor Ching-Yeu Wei
Ching-Yeu Wei 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).
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Patent number: 7126130Abstract: A radiation detector assembly, in some aspects, includes a detector substrate and a detector matrix array disposed on the detector substrate. A scintillator material is disposed on the detector matrix array and a moisture resistant layer is disposed on the scintillator material. The moisture resistant layer includes a plurality of sub-layers. The assembly also includes a protective cover disposed over the detector substrate and the moisture resistant layer, and an adhesive material disposed between the detector substrate and the cover. The adhesive material in some configurations is disposed so that it is not in contact with the moisture resistant layer.Type: GrantFiled: December 12, 2003Date of Patent: October 24, 2006Assignee: General Electric CompanyInventors: William Andrew Hennessy, Charles Edward Baumgartner, Paul Justin Janiszewski, Jeffrey Jon Shaw, Ching-Yeu Wei
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Patent number: 7053381Abstract: The present invention provides an X-ray detector assembly and a fabrication method, where the X-ray detector assembly includes a scintillator material disposed on a detector matrix array disposed on a detector substrate; and an encapsulating coating disposed on the scintillator material. The encapsulating coating includes a combination of a mono-chloro-poly-para-xylylene layer and a poly-para-xylylene layer. In one embodiment, a poly-para-xylylene layer is disposed over the scintillator material and a mono-chloro-poly-para-xylylene layer is disposed over the poly-para-xylylene layer.Type: GrantFiled: July 30, 2003Date of Patent: May 30, 2006Assignee: General Electric CompanyInventors: Jeffrey Jon Shaw, Ching-Yeu Wei, David Francis Fobare
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Patent number: 7005648Abstract: The present invention provides an X-ray detector assembly and a fabrication method, where the X-ray detector assembly comprises a scintillator material disposed on a detector matrix array disposed on a detector substrate; an encapsulating coating disposed on the scintillator material; a moisture resistant cover disposed over the detector substrate and the encapsulating coating, and an adhesive material disposed between the detector substrate and the moisture resistant cover so as to form a moisture vapor barrier. The adhesive material is disposed so that it is not in contact with the encapsulating coating. The fabrication method of the X-ray detector assembly includes the steps of disposing the encapsulating coating on the scintillator material and a portion of the detector substrate and removing the encapsulating coating from the portion of the detector substrate.Type: GrantFiled: November 21, 2003Date of Patent: February 28, 2006Assignee: General Electric CompanyInventors: Charles Edward Baumgartner, David Francis Fobare, Michael Clement DeJule, Ching-Yeu Wei, William Andrew Hennessy, Robert John Wojnarowski
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Publication number: 20050285045Abstract: The present invention provides an X-ray detector assembly and a fabrication method, where the X-ray detector assembly comprises a scintillator material disposed on a detector matrix array disposed on a detector substrate; an encapsulating coating disposed on the scintillator material; a moisture resistant cover disposed over the detector substrate and the encapsulating coating, and an adhesive material disposed between the detector substrate and the moisture resistant cover so as to form a moisture vapor barrier. The adhesive material is disposed so that it is not in contact with the encapsulating coating. The fabrication method of the X-ray detector assembly includes the steps of disposing the encapsulating coating on the scintillator material and a portion of the detector substrate and removing the encapsulating coating from the portion of the detector substrate.Type: ApplicationFiled: November 21, 2003Publication date: December 29, 2005Inventors: Charles Baumgartner, David Fobare, Michael DeJule, Ching-Yeu Wei, William Hennessy, Robert Wojnarowski
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Publication number: 20050078231Abstract: Storage capacitor design for a solid state imager. The imager includes several pixels disposed on a substrate in an imaging array pattern. Each pixel includes a photosensor coupled to a thin film switching transistor. Several scan lines are disposed at a first level with respect to the substrate along a first axis and several data lines are disposed at a second level along a second axis of the imaging array. Several data lines disposed at a second level with respect to the substrate along a second axis of the imaging array pattern. Each pixel comprises a storage capacitor coupled parallel to the photosensor, the storage capacitor comprising a storage capacitor electrode and a capacitor common electrode.Type: ApplicationFiled: October 14, 2003Publication date: April 14, 2005Inventors: Ji-Ung Lee, Douglas Albagli, George Possin, William Hennessy, Ching-Yeu Wei
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Patent number: 6784434Abstract: A method for fabricating a radiation detector including at least one Thin Film Transistor (TFT) includes forming a low resistance data line strap unitary with a light block element on the TFT.Type: GrantFiled: June 25, 2002Date of Patent: August 31, 2004Assignee: General Electric CompanyInventors: William Andrew Hennessy, Douglas Albagli, Ji Ung Lee, Ching-Yeu Wei
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Publication number: 20040155320Abstract: A digital X-ray panel and method of fabricating an X-ray detector panel assembly is provided. The method includes forming a detector matrix on the detector substrate, forming a dam on the detector substrate circumscribing the detector matrix, forming a scintillator material on the detector matrix, and forming a hermetic covering on the scintillator material that at least one of extends to a surface of the dam and extends past the dam. The digital X-ray panel assembly includes a detector substrate, a detector matrix formed on said detector substrate, a dam formed on said detector substrate circumscribing the detector matrix, a scintillator material formed on the detector matrix, and a hermetic covering formed on the scintillator material that at least one of extends past the detector matrix and the dam, and extends past the detector matrix onto a surface of the dam.Type: ApplicationFiled: February 12, 2003Publication date: August 12, 2004Inventors: Michael Clement DeJule, Ching-Yeu Wei, David Francis Fobare
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Publication number: 20040124362Abstract: A radiation detector assembly, in some aspects, includes a detector substrate and a detector matrix array disposed on the detector substrate. A scintillator material is disposed on the detector matrix array and a moisture resistant layer is disposed on the scintillator material. The moisture resistant layer includes a plurality of sub-layers. The assembly also includes a protective cover disposed over the detector substrate and the moisture resistant layer, and an adhesive material disposed between the detector substrate and the cover. The adhesive material in some configurations is disposed so that it is not in contact with the moisture resistant layer.Type: ApplicationFiled: December 12, 2003Publication date: July 1, 2004Inventors: William Andrew Hennessy, Charles Edward Baumgartner, Paul Justin Janiszewski, Jeffrey Jon Shaw, Ching-Yeu Wei
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Patent number: 6740884Abstract: A radiation detector includes a top gate thin film transistor (TFT) including a source electrode, a drain electrode, a gate electrode, a first dielectric layer, and a second dielectric layer, wherein the second dielectric layer is extending over a surface of the first dielectric layer. The radiation detector also includes a capacitor that includes at least two electrodes and a dielectric layer. The capacitor dielectric layer is formed unitarily with the TFT second dielectric layer.Type: GrantFiled: April 3, 2002Date of Patent: May 25, 2004Assignee: General Electric CompanyInventors: Ji Ung Lee, Douglas Albagli, George Edward Possin, Ching-Yeu Wei
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Patent number: 6724010Abstract: A solid state imager is provided that comprises an imaging array of gated photodiodes. The imager comprises a plurality of photosensor pixels arranged in a pixel array, and each of the photosensor pixels includes a photodiode having a sidewall, the sidewall having a gate dielectric layer disposed thereon, and a field plate disposed around the photodiode body. The field plate comprises amorphous silicon disposed on the gate dielectric layer and extends substantially completely around the sidewall of said photodiode. The field plate is electrically coupled to the common electrode of the imaging array so that the field plate creates an electric field around the photodiode body in correspondence with the potential of said common electrode. A method of fabricating the gated photodiode array is also provided.Type: GrantFiled: August 3, 2000Date of Patent: April 20, 2004Assignee: General Electric CompanyInventors: Robert Forrest Kwasnick, George Edward Possin, Ching-Yeu Wei
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Patent number: 6720561Abstract: The present invention provides an X-ray detector assembly and a fabrication method, where the X-ray detector assembly comprises a scintillator material disposed on a detector matrix array disposed on a detector substrate; an encapsulating coating disposed on the scintillator material; a moisture resistant cover disposed over the detector substrate and the encapsulating coating, and an adhesive material disposed between the detector substrate and the moisture resistant cover so as to form a moisture vapor barrier. The adhesive material is disposed so that it is not in contact with the encapsulating coating. The fabrication method of the X-ray detector assembly includes the steps of disposing the encapsulating coating on the scintillator material and a portion of the detector substrate and removing the encapsulating coating from the portion of the detector substrate.Type: GrantFiled: December 6, 2001Date of Patent: April 13, 2004Assignee: General Electric CompanyInventors: Charles Edward Baumgartner, David Francis Fobare, Michael Clement DeJule, Ching-Yeu Wei, William Andrew Hennessy, Robert John Wojnarowski, Haleh Ardebili, William Edward Burdick, Jr.
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Publication number: 20040021084Abstract: The present invention provides an X-ray detector assembly and a fabrication method, where the X-ray detector assembly includes a scintillator material disposed on a detector matrix array disposed on a detector substrate; and an encapsulating coating disposed on the scintillator material. The encapsulating coating includes a combination of a mono-chloro-poly-para-xylylene layer and a poly-para-xylylene layer. In one embodiment, a poly-para-xylylene layer is disposed over the scintillator material and a mono-chloro-poly-para-xylylene layer is disposed over the poly-para-xylylene layer.Type: ApplicationFiled: July 30, 2003Publication date: February 5, 2004Applicant: General Electric CompanyInventors: Jeffrey Jon Shaw, Ching-Yeu Wei, David Francis Fobare
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Publication number: 20030234364Abstract: A method for fabricating a radiation detector including at least one Thin Film Transistor (TFT) includes forming a low resistance data line strap unitary with a light block element on the TFT.Type: ApplicationFiled: June 25, 2002Publication date: December 25, 2003Inventors: William Andrew Hennessy, Douglas Albagli, Ji Ung Lee, Ching-Yeu Wei
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Publication number: 20030189175Abstract: A radiation detector includes a top gate thin film transistor (TFT) including a source electrode, a drain electrode, a gate electrode, a first dielectric layer, and a second dielectric layer, wherein the second dielectric layer is extending over a surface of the first dielectric layer. The radiation detector also includes a capacitor that includes at least two electrodes and a dielectric layer. The capacitor dielectric layer is formed unitarily with the TFT second dielectric layer.Type: ApplicationFiled: April 3, 2002Publication date: October 9, 2003Inventors: Ji Ung Lee, Douglas Albagli, George Edward Possin, Ching-Yeu Wei
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Patent number: 6617561Abstract: An imager includes a photodiode array, each photodiode having an associated switching device, such as a thin-film transistor, addressable via a scan line. A data line for reading out from the photodiodes is formed first on a glass substrate, allowing the data line to be optimized in terms of thickness for conductivity.Type: GrantFiled: March 9, 2000Date of Patent: September 9, 2003Assignee: General Electric CompanyInventors: Ching-Yeu Wei, Jianqiang Liu
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Publication number: 20030107001Abstract: The present invention provides an X-ray detector assembly and a fabrication method, where the X-ray detector assembly comprises a scintillator material disposed on a detector matrix array disposed on a detector substrate; an encapsulating coating disposed on the scintillator material; a moisture resistant cover disposed over the detector substrate and the encapsulating coating, and an adhesive material disposed between the detector substrate and the moisture resistant cover so as to form a moisture vapor barrier. The adhesive material is disposed so that it is not in contact with the encapsulating coating. The fabrication method of the X-ray detector assembly includes the steps of disposing the encapsulating coating on the scintillator material and a portion of the detector substrate and removing the encapsulating coating from the portion of the detector substrate.Type: ApplicationFiled: December 6, 2001Publication date: June 12, 2003Applicant: General Electric CompanyInventors: Charles Edward Baumgartner, David Francis Fobare, Michael Clement DeJule, Ching-Yeu Wei, William Andrew Hennessy, Robert John Wojnarowski
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Patent number: 6465861Abstract: A radiation imager is disclosed that is resistant to degradation due to moisture by either contact pad corrosion, guard ring corrosion or by photodiode leakage. A contact pad of a large area imager is disclosed that is formed into three distinct and electrically connected regions. The resulting structure of the contact pad regions forms reliable contact that is resistant to corrosion damage. Also disclosed is a data line of an imager, or a display, the resistance of which is reduced by patterning an aluminum (Al) line on top of a transistor island structure, with the formed data line preferably being encapsulated. In addition, a guard ring having first and second regions and photosensitive element are disclosed. The second region comprises an electrical contact between ITO and underlying metal and a second tier which acts as a moisture barrier and is preferably disposed at the corner of the guard ring and separated from the contact pads of the imager in such a manner as to minimize corrosion.Type: GrantFiled: December 22, 1999Date of Patent: October 15, 2002Assignee: General Electric CompanyInventors: Jianqiang Liu, Ching-Yeu Wei, Robert Forrest Kwasnick
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Patent number: 6414315Abstract: A radiation imager includes a light sensitive imaging array, a barrier layer formed over the light sensitive imaging array, a continuous polymer layer formed over the barrier layer, and a scintillator formed directly on the continuous polymer layer. The continuous polymer layer improves the adherence of the scintillator by reducing delamination especially under adverse environmental conditions.Type: GrantFiled: October 4, 1999Date of Patent: July 2, 2002Assignee: General Electric CompanyInventors: Ching-Yeu Wei, Robert Forrest Kwasnick, David Francis Fobare
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Patent number: 6396046Abstract: A light block material disposed over the photosensitive region of a switching device (e.g., TFT) of a radiation imager is disclosed. The light block material prevents optical photons emitted from a scintillator from passing into the switching device and being absorbed. Cross-talk and noise in the imager are thereby reduced. Also, non-linear pixel response and spurious signals passing to readout electronics are avoided. Optionally, opaque caps comprising the same light block material may be included in the imager structure. The caps cover contact vias filled with a common electrode and located in the contact finger region of the imager. The integrity of the filled vias is thereby maintained during subsequent processing. Also disclosed is a radiation imager containing these structures.Type: GrantFiled: August 22, 2000Date of Patent: May 28, 2002Assignee: General Electric CompanyInventors: George Edward Possin, Robert Forrest Kwasnick, Ching-Yeu Wei, Douglas Albagli
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Patent number: 6392254Abstract: A radiation imager is disclosed that is resistant to degradation due to moisture by either contact pad corrosion, guard ring corrosion or by photodiode leakage. A contact pad of a large area imager is disclosed that is formed into three distinct and electrically connected regions. The resulting structure of the contact pad regions forms reliable contact that is resistant to corrosion damage. Also disclosed is a data line of an imager, or a display, the resistance of which is reduced by patterning an aluminum (Al) line on top of a transistor island structure, with the formed data line preferably being encapsulated. In addition, a guard ring having first and second regions and photosensitive element are disclosed. The second region comprises an electrical contact between ITO and underlying metal and a second tier which acts as a moisture barrier and is preferably disposed at the corner of the guard ring and separated from the contact pads of the imager in such a manner as to minimize corrosion.Type: GrantFiled: December 22, 1999Date of Patent: May 21, 2002Assignee: General Electric CompanyInventors: Jianqiang Liu, Ching-Yeu Wei, Robert Forrest Kwasnick