Patents by Inventor Tzung-Han Yang

Tzung-Han Yang 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).

  • Patent number: 8575832
    Abstract: The present invention relates to a field emission display, which includes: a base substrate; a plurality of cathode strips, disposed over the base substrate; an insulating layer, disposed over the cathode strips and having a plurality of openings, therewith the openings corresponding to the cathode strips; a plurality of anode strips, disposed over the insulating layer, where the cathode strips and the anode strips are arranged into a matrix and the anode strips individually have at least one impacted surface; and a plurality of subpixel units, individually including: an emissive region having a phosphor layer disposed over the impacted surface; and at least one emissive protrusion, corresponding to the emissive region and disposed in the openings to electrically connect to the cathode strips and protrude out of the openings. Accordingly, the present invention can enhance light utilization efficiency of a field emission display.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: November 5, 2013
    Assignee: Tatung Company
    Inventors: Tzung-Han Yang, Chi-Tsung Lo
  • Patent number: 8536775
    Abstract: A field emission lamp, capable of increasing the number of electron emitting points thereof, and of increasing the uniformity and the intensity of the light output therefrom by installing a mesh cathode is disclosed. The field emission lamp comprises: an outer shell having an inner surface, a mesh cathode unit surrounded by the outer shell, an anode unit formed on a portion of the inner surface of the outer shell, and a phosphor layer formed on a portion of the anode unit. Wherein, the light generated by the phosphor layer, due to the bombardment of the electrons, can output from the field emission lamp of the present invention, through the outer shell where none of the anode unit is formed thereon.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: September 17, 2013
    Assignee: Tatung Company
    Inventor: Tzung-Han Yang
  • Patent number: 8390186
    Abstract: The present invention relates to a field emission planar lighting lamp, which comprises: a base substrate; cathodes disposed on the base substrate; anodes disposed on the base substrate, wherein the cathodes are disposed beside the anodes, each anode has an impacted surface corresponding to the cathodes, and the impacted surface is an inclined plane or a curved plane; a phosphor layer disposed on the impacted surface of the anode; and a front substrate corresponding to the base substrate, wherein the anodes and the cathodes are disposed between the base substrate and the front substrate.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: March 5, 2013
    Assignee: Tatung Company
    Inventors: Tzung-Han Yang, Chi-Tsung Lo
  • Patent number: 8294354
    Abstract: The present invention relates to a field emission light source device, which includes: a base substrate; at least one cathode strip, disposed over the base substrate; at least one emissive protrusion, disposed over the cathode strip and electrically connected to the cathode strip; an insulating layer, disposed over the cathode strip and having at least one opening to allow the emissive protrusion to protrude out of the opening; at least one anode strip, disposed over the insulating layer, where the cathode strip and the anode strip are arranged into an m×n matrix and the at least one anode strip individually has an impacted surface corresponding to the emissive protrude; and a phosphor layer disposed over the impacted surface. Accordingly, the present invention can enhance light utilization efficiency of a field emission light source device.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: October 23, 2012
    Assignee: Tatung Company
    Inventors: Tzung-Han Yang, Chi-Tsung Lo
  • Publication number: 20120176023
    Abstract: A field emission lamp, capable of increasing the number of electron emitting points thereof, and of increasing the uniformity and the intensity of the light output therefrom by installing a lens unit is disclosed. The field emission lamp comprises: an outer shell having an inner surface, an anode portion formed on a portion of the inner surface of the outer shell, a cathode portion surrounded by the outer shell, a phosphor layer formed on a portion of the anode portion, and a lens unit disposed adjacent to the inner surface of the outer shell where the anode portion is not formed. Wherein, the phosphor layer generates light due to the bombardment of the electrons, the light passes through the lens unit and the inner surface of the outer shell where the anode portion is not formed, and outputs from the field emission lamp.
    Type: Application
    Filed: April 13, 2011
    Publication date: July 12, 2012
    Applicant: Tatung Company
    Inventor: Tzung-Han Yang
  • Publication number: 20120176024
    Abstract: A field emission lamp, capable of increasing the number of electron emitting points thereof, and of increasing the uniformity and the intensity of the light output therefrom by installing a mesh cathode is disclosed. The field emission lamp comprises: an outer shell having an inner surface, a mesh cathode unit surrounded by the outer shell, an anode unit formed on a portion of the inner surface of the outer shell, and a phosphor layer formed on a portion of the anode unit. Wherein, the light generated by the phosphor layer, due to the bombardment of the electrons, can output from the field emission lamp of the present invention, through the outer shell where none of the anode unit is formed thereon.
    Type: Application
    Filed: April 13, 2011
    Publication date: July 12, 2012
    Applicant: Tatung Company
    Inventor: Tzung-Han Yang
  • Publication number: 20120153811
    Abstract: The present invention relates to a field emission planar lighting lamp, which comprises: a base substrate; cathodes disposed on the base substrate; anodes disposed on the base substrate, wherein the cathodes are disposed beside the anodes, each anode has an impacted surface corresponding to the cathodes, and the impacted surface is an inclined plane or a curved plane; a phosphor layer disposed on the impacted surface of the anode; and a front substrate corresponding to the base substrate, wherein the anodes and the cathodes are disposed between the base substrate and the front substrate.
    Type: Application
    Filed: April 13, 2011
    Publication date: June 21, 2012
    Applicant: Tatung Company
    Inventors: Tzung-Han Yang, Chi-Tsung Lo
  • Publication number: 20120153808
    Abstract: The present invention relates to a field emission light source device, which includes: a base substrate; at least one cathode strip, disposed over the base substrate; at least one emissive protrusion, disposed over the cathode strip and electrically connected to the cathode strip; an insulating layer, disposed over the cathode strip and having at least one opening to allow the emissive protrusion to protrude out of the opening; at least one anode strip, disposed over the insulating layer, where the cathode strip and the anode strip are arranged into an m×n matrix and the at least one anode strip individually has an impacted surface corresponding to the emissive protrude; and a phosphor layer disposed over the impacted surface. Accordingly, the present invention can enhance light utilization efficiency of a field emission light source device.
    Type: Application
    Filed: April 13, 2011
    Publication date: June 21, 2012
    Applicant: Tatung Company
    Inventors: Tzung-Han Yang, Chi-Tsung Lo
  • Publication number: 20120153809
    Abstract: The present invention relates to a field emission display, which includes: a base substrate; a plurality of cathode strips, disposed over the base substrate; an insulating layer, disposed over the cathode strips and having a plurality of openings, therewith the openings corresponding to the cathode strips; a plurality of anode strips, disposed over the insulating layer, where the cathode strips and the anode strips are arranged into a matrix and the anode strips individually have at least one impacted surface; and a plurality of subpixel units, individually including: an emissive region having a phosphor layer disposed over the impacted surface; and at least one emissive protrusion, corresponding to the emissive region and disposed in the openings to electrically connect to the cathode strips and protrude out of the openings. Accordingly, the present invention can enhance light utilization efficiency of a field emission display.
    Type: Application
    Filed: April 13, 2011
    Publication date: June 21, 2012
    Applicant: Tatung Company
    Inventors: Tzung-Han Yang, Chi-Tsung Lo
  • Publication number: 20110254868
    Abstract: A field emission lamp is disclosed, which comprises: a substrate, a plurality of first field emission units, a plurality of second field emission units, and a driving control unit. The plurality of first field emission units and the plurality of second field emission units are located on the substrate. Besides, the first phosphor layer of the plurality of first field emission units has a first color temperature. The second phosphor layer of the plurality of second field emission units has a second color temperature, wherein the first color temperature is higher than the second color temperature. Moreover, the driving control unit drives and controls the plurality of first field emission units and the plurality of second field emission units based on a predetermined driving mode, for modulating the light emission mode of the field emission lamp and the color temperature of the mixed light emitted from the field emission lamp.
    Type: Application
    Filed: June 8, 2010
    Publication date: October 20, 2011
    Applicant: Tatung Company
    Inventors: Chi-Tsung Lo, Tzung-Han Yang, Yung-Chih Yu, Ching-Hsuang Cheng
  • Patent number: 8016630
    Abstract: A substrate 200 is provided with conductive cathode tracks and a field electron emission material on the tracks. Septa 201 and pillars 202 are provided as raised elements over the emission material. An electrically insulating layer is formed over the emission material and raised elements 201, 202, such that boundary walls are formed in the insulating layer where it contacts the raised elements. The raised elements 201, 202 are then removed, to leave emitter cells and voids for other components, defined by the boundary walls with the insulating layer. A gate electrode is provided over the insulating layer.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: September 13, 2011
    Assignee: Tatung Company
    Inventors: Chi-Tsung Lo, Tzung-Han Yang, Richard Allan Tuck
  • Publication number: 20110101847
    Abstract: A field emission cathode plate is disclosed, which includes: a substrate; a cathode layer, disposed on the substrate; a conductive layer with an arc surface or a resistor layer with an opening and resistivity larger than that of the cathode layer, disposed on the cathode layer; and a cambered field emission layer, having an arc surface and disposed on the conductive layer or on the cathode layer in the opening of the resistor layer and covering the resistor layer around the opening. The present invention also provides a method for fabricating the above-mentioned field emission cathode plate. The method can provide field emission cathode plate achieving uniform field emission and does not involve high resolution and cost.
    Type: Application
    Filed: January 6, 2011
    Publication date: May 5, 2011
    Applicants: Tatung Company, Industrial Technology Research Institute
    Inventors: Hung-Yuan LI, Jian-Min Jeng, Ching-Hsuang Cheng, Nien-Chun Chin, Tzung-Han Yang
  • Publication number: 20110043097
    Abstract: A field emission lamp, capable of preventing the degradation and the non-uniformly distribution of the light intensity of the emitted light, even after long-term usage of the field emission lamp, is disclosed. The anode of the disclosed field emission lamp is not required to be transparent. The disclosed field emission lamp comprises: a transparent shell; an anode unit set inside the transparent shell; a cathode unit set between the anode unit and the transparent shell; and a phosphor layer set above the anode unit. The cathode unit is apart from the phosphor layer with a certain distance. The phosphor layer and the anode unit are both surrounded by the cathode unit.
    Type: Application
    Filed: December 8, 2009
    Publication date: February 24, 2011
    Applicant: Tatung Company
    Inventors: Wen-Hsien Cheng, Tzung-Han Yang, Yung-Chih Yu, Ching-Hsuang Cheng
  • Publication number: 20110025188
    Abstract: A field emission lamp and method of fabricating the same are disclosed, the field emission lamp of the present invention comprising a lamp tube, an anode, at least one auxiliary electrode, a cathode, and an emitter layer. The anode comprises a transparent conductive layer and a phosphor layer, and the transparent conductive layer is made of ITO, IZO, AZO, GZO, zinc oxide, or the combination thereof. The auxiliary electrode of the field emission lamp of the present invention can shorten the electron transportation path length, increase the electron transportation efficiency, reduce the phenomenon of micro-discharges caused by electron charging, reduce the voltage loss, reduce the temperature increase of the phosphor layer and elongate the lifetime of the field emission lamp.
    Type: Application
    Filed: November 12, 2009
    Publication date: February 3, 2011
    Applicant: Tatung Company
    Inventors: Tzung-Han Yang, Bing-Da Dai
  • Patent number: 7733004
    Abstract: A field emission device (FED) includes a top substrate having an anode electrode and a phosphor layer, a lower substrate, at least one cathode electrode having an opening-pattern with at least one opening, an insulating layer located on the cathode electrode, a gate layer located on the insulating layer, and an electron emitter located in the opening of the cathode electrode. The electron emitter is adjacent to the cathode electrode and is electrically connected therewith. The cathode electrode having the opening-pattern is located on a bottom panel. Through the structure illustrated above, uniformity of emitting electron density can be improved and brightness and contrast of color for the FED can be enhanced.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: June 8, 2010
    Assignees: Tatung Company, Industrial Technology Research Institute
    Inventors: Tzung-Han Yang, Jeng-Maw Chiou, Hung-Yuan Li, Chao-Hsun Lin, Shu-Hsing Lee
  • Publication number: 20100123382
    Abstract: A field emission cathode plate is disclosed, which includes: a substrate; a cathode layer, disposed on the substrate; a conductive layer with an arc surface or a resistor layer with an opening and resistivity larger than that of the cathode layer, disposed on the cathode layer; and a cambered field emission layer, having an arc surface and disposed on the conductive layer or on the cathode layer in the opening of the resistor layer and covering the resistor layer around the opening. The present invention also provides a method for fabricating the above-mentioned field emission cathode plate. The method can provide field emission cathode plate achieving uniform field emission and does not involve high resolution and cost.
    Type: Application
    Filed: April 23, 2009
    Publication date: May 20, 2010
    Applicants: Tatung Company, Industrial Technology Research Institute
    Inventors: Hung-Yuan Li, Jian-Min Jeng, Ching-Hsuang Cheng, Nien-Chun Chin, Tzung-Han Yang
  • Patent number: 7692371
    Abstract: The present invention relates to an electrode for a source of field emitting electrons and a lighting panel and a lighting apparatus thereof. A plurality of conductive emitters made from a combination of an electrical emitting source material and an electrical conductive material is formed on a cathode plate. Therefore, the conductive emitter can be a cathode, a gate and a field emitting electric source as well to simplify the structure and the process, and improve the brightness and uniformity thereof.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: April 6, 2010
    Assignee: Tatung Company
    Inventors: Li-Yung Lu, Zhi-Ming Hong, Tzung-Han Yang
  • Patent number: 7629731
    Abstract: A planar field emission illumination module includes a top substrate, a bottom substrate, and a plurality of electron-amplification sets located between the top substrate and the bottom substrate. Each electron-amplification set has multiple electron-amplification plates spaced at gaps, which are formed of a metal and coated with an electron-amplification material on the surfaces. The cross section of each electron amplification plate can be V-shaped, U-shaped, semi-circular, arc-shaped, trapezoid, irregular, and the combination thereof. The planar field emission illumination module can focus the electrons and regulate the distribution of the electrons effectively. Hence, the planar field emission illumination module can provide a flat light source with illumination uniformity and high brightness.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: December 8, 2009
    Assignee: Tatung Company
    Inventors: Woo-Hu Tsai, Tzung-Han Yang
  • Publication number: 20090295270
    Abstract: The present invention relates to a device with electron beam excitation for making a white light source. The device with electron beam excitation comprises: an electron emissive layer for providing an electron beam; and a fluorescent layer comprising a fluorescent powder, wherein the fluorescent powder comprises at least four elements of Zn, S, Se and O. The fluorescent layer can be excited by an electron beam and then emit white light. Accordingly, the present invention can provide a white light source with high color rendering index.
    Type: Application
    Filed: October 8, 2008
    Publication date: December 3, 2009
    Applicant: Tatung Company
    Inventors: Wade-Lee Wang, Wen-Hsien Cheng, Tzung-Han Yang
  • Publication number: 20090166639
    Abstract: An active field emission substrate including a thin film transistor (TFT) substrate and a field emission device substrate is provided. The TFT substrate has a plurality of TFTs, and each TFT at least includes a source, a drain, and a gate. The field emission device substrate is disposed on the TFT substrate and has a plurality of conductive channels and a plurality of field emission sources. Each conductive channel passes through the field emission device substrate and is electrically connected with each field emission source. Moreover, each conductive channel in the field emission device substrate is electrically conducted with the source or the drain of each TFT in the TFT substrate. The active field emission substrate is made up of two substrates fabricated by separate processes, so the procedures can be simplified and the yield can be improved.
    Type: Application
    Filed: February 24, 2008
    Publication date: July 2, 2009
    Applicant: TATUNG COMPANY
    Inventors: Tzung-Han Yang, Yen-Jung Lin