Patents by Inventor Kuei-Wen Cheng

Kuei-Wen Cheng 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: 7238077
    Abstract: A tetraode field-emission display and a method of fabricating the same are disclosed. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. A glass plate is placed between the mesh and the anode to serve as a spacer. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: July 3, 2007
    Assignee: Teco Nanotech Co. Ltd.
    Inventors: Kuo-Rong Chen, Jin-Shou Fang, Kuei-Wen Cheng
  • Patent number: 7220159
    Abstract: A method and a structure for a converging-type electron-emission source of a field-emission display are disclosed. A substrate is provided, and a silver paste is used to form a first electrode layer on the substrate by the process such as thick-film photolithography or screen-printing. A carbon nanotube is formed on the first electrode layer by thick-film photolithography or screen-printing, and a second electrode is formed on the carbon nanotube. A third electrode layer is formed on the first electrode layer around the second electrode layer by thick-film photolithography or screen-printing. The third electrode layer is higher than the second electrode layer, such that a converging exit is formed around the second electrode layer. A sintering step is performed. When the electron beam is generated, the electron beam is concentrated at the center of the converging exit to impinge a phosphor layer of an anode without causing gamut.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: May 22, 2007
    Assignee: TECO Nanotech Co., Ltd.
    Inventors: Chun-Yen Hsiao, Frank Yang, Kuei-Wen Cheng
  • Patent number: 7215522
    Abstract: A power module for a field emission display and a method of power generation are described. More particularly, the power module and method of power generation both are for the field emission display in diode structure. The power module has a direct current (DC) power source, a pulse width modulation circuit connected to the DC power source for generating a pulse width modulation signal, an electronic switch connected to the pulse width modulation circuit for receiving the modulation signal so as to convert the DC power into a high-frequency alternating power supplied to the primary side of a transformer. Moreover, the second side of the transformer generates a high-voltage and a high-frequency power source to the field emission display.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: May 8, 2007
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Chi-Hao Wo, Wei-Chi Yao, Jia-Hung Wu, Kuei-Wen Cheng
  • Publication number: 20070095665
    Abstract: A method for enhancing the adhesion and life span of the electrophoresis deposited electron emission source. The method can form a siloxane film on the surface of carbon nanotubes during a one-time electrophoresis deposition process. The siloxane film is then sintered to form a silicon dioxide film on the surface of the electron emission source. This can prevent the intoxication of carbon nanotubes, thereby enhancing the life span of the carbon nanotubes and the adhesion of carbon nanotubes on the electrode layer.
    Type: Application
    Filed: November 3, 2005
    Publication date: May 3, 2007
    Inventors: Chun-Yen Hsiao, Shie-Heng Lee, Yu-An Li, Jin-Lung Tsai, Kuei-Wen Cheng
  • Publication number: 20070031589
    Abstract: A method for fabricating an electronic emission source of a field emission display includes to provide a substrate, screen print or lightgraphic etching the laminate to form a cathode electrode layer within the cavities, wherein the surface of the cathode electrode layer fabricates a photoresist by lightgraphy technology, coat a low viscosity carbon nano-tube solution to the surface and depositing it in the cavities, remove the photoresist by vacuum sintering and etching to form an electron emission sources layer having flat surface within the cavities. Comparing with the conventional arts, the present invention is to provide a better flatness, which improves the uniformity of images and brightness. In addition, the present invention enhances the density of Carbon Nano-Tube (“CNT”) and thereby improves the electron density of the electron beams.
    Type: Application
    Filed: August 17, 2006
    Publication date: February 8, 2007
    Inventors: Chun-Yen Hsiao, Yu-An Li, Jin-Lung Tsai, Kuei-Wen Cheng
  • Publication number: 20070013286
    Abstract: In a converging-type electron-emission source of a field-emission display, a substrate is provided and a silver paste is used to form a first electrode layer on the substrate by the process such as thick-film photolithography or screen-printing. A carbon nanotube is formed on the first electrode layer by thick-film photolithography or screen-printing, and a second electrode is formed on the carbon nanotube. A third electrode layer is formed on the first electrode layer around the second electrode layer by thick-film photolithography or screen-printing. The third electrode layer is higher than the second electrode layer, such that a converging exit is formed around the second electrode layer. A sintering step is performed. When the electron beam is generated, the electron beam is concentrated at the center of the converging exit to impinge a phosphor layer of an anode without causing gamut.
    Type: Application
    Filed: August 17, 2006
    Publication date: January 18, 2007
    Inventors: Chun-Yen Hsiao, Frank Yang, Kuei-Wen Cheng
  • Publication number: 20070000782
    Abstract: A method for batch fabricating electron emission source of electrophoresis deposited carbon nanotubes includes preparing a semi-manufactured cathode structure and a metallic plate connected with electrophoresis electrodes. The cathode structure and the metallic plate that are parallel to each other are separated with a fixed distance and are rinsed in an electrophoresis solution. A processe is performed to remove the bubbles formed in the cathode structure, and to electrophoresis deposit the carbon nanotubes onto the cathode structure. After each deposition process is completed, the cathode structure is baked under a low temperature so as to remove the residual solution remained on the cathode structure. After a homogeneous carbon nanotubes layer is deposited to form the electron emission source, a sintering process is performed so as to transfer the chargers into conductive metallic oxide salts. Thereby, the electron conduction of the carbon nanotubes and the cathode electrode layer is enhanced.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 4, 2007
    Inventors: Kuei-Wen Cheng, Jin-Lung Tsai, Shie-Heng Lee, Yu-An Li, Chun-Yen Hsiao
  • Patent number: 7147534
    Abstract: A patterned carbon nanotube process adopted for an electronic device is described. A negative photoresist layer is coated on a cathode substrate. A mask layer is formed with a carved cavity therein during a development process. A carbon nanotube spray is sprayed thereon to fill the carved cavity with a plurality of carbon nanotubes. The cathode substrate is sintered at a high temperature or in a vacuum to remove the mask layer and part of the carbon nanotubes adhered to the mask layer simultaneously, and to connect the rest of the carbon nanotubes firmly to the cathode conductive layer as an electron emitter layer with high resolution for increasing current density and uniformity of illumination of the electronic device.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: December 12, 2006
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Shih-Hsun Chen, Chun-Yen Hsiao, Shih-Chien Hsiao, Shie-Heng Lee, Kuei-Wen Cheng
  • Patent number: 7138753
    Abstract: A tetraode field-emission display and a method of fabricating the same are disclosed. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: November 21, 2006
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Kuo-Rong Chen, Te-Fong Chan, Jin-Shou Fang, Chih-Che Kuo, Kuei-Wen Cheng
  • Patent number: 7134931
    Abstract: A method of fabricating a tetraode field-emission display. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: November 14, 2006
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Kuo-Rong Chen, Te-Fong Chan, Jin-Shou Fang, Chih-Che Kuo, Kuei-Wen Cheng
  • Patent number: 7118440
    Abstract: A spray with carbon nanotubes and a method for spraying the spray to get an electron emitting source layer are provided. Choosing a proper and vaporizable solvent to disperse and suspend the carbon nanotubes scattered therein. To mixed up the carbon nanotubes with a binder or an additive to be the spray with a low viscosity. The solvent mixed is carried with a high-pressure air to spray uniformly on a negative conductive layer or a negative glass substrate, a thickness of a film sprayed by the solvent mixed can be adjusted and controlled by a spraying frequency thereof, and the film can be even and uniform and the carbon nanotubes can expose out easily to generate electrons and increase current density thereby in the spraying manner.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: October 10, 2006
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Chihche Kuo, Yu-An Li, Shie Heng Lee, Kuei Wen Cheng
  • Publication number: 20060213774
    Abstract: A method for enhancing the homogeneity and efficiency of carbon nanotube electron emission source. The method includes the following steps. First, a semi-manufactured cathode structure is prepared. Then, the cathode structure and the metallic plate are connected to the electrophoresis electrodes. After that, the side of the cathode structure to be electrophoresis deposited is kept a fixed distance in parallel with the metallic plate. Then, the electrophoresis deposition is performed to the semi-manufactured cathode structure by placing the combination into the solution of the electrophoresis tank. Later, an electric field is formed from a direct current voltage of a power supply. In this manner, the carbon nanotubes are deposited on the cathode electrode to form the electron emission source. After the deposition process of the cathode structure is completed, the combination is baked with a low temperature so as to remove the residual water solution on the cathode structure.
    Type: Application
    Filed: March 28, 2005
    Publication date: September 28, 2006
    Inventors: Chun-Yen Hsiao, Shie-Heng Lee, Yu-An Li, Jin-Lung Tsai, Kuei-Wen Cheng
  • Publication number: 20060217025
    Abstract: A method for enhancing the homogeneity of carbon nanotube electron emission source which is manufactured using electrophoresis deposition. The method includes the following steps. First, a semi-manufactured cathode structure is prepared. Then, the cathode structure and the metallic plate are connected to the electrophoresis electrodes. After that, the side of the cathode structure to be electrophoresis deposited is kept a fixed distance in parallel with the metallic plate. Then, the electrophoresis deposition is performed to the semi-manufactured cathode structure by placing the combination into the solution of the electrophoresis tank. Later, an electric field is formed from a direct current pulse voltage of a power supply. In this manner, the carbon nanotubes are deposited on the cathode electrode to form the electron emission source.
    Type: Application
    Filed: March 28, 2005
    Publication date: September 28, 2006
    Inventors: Chun-Yen Hsiao, Shie-Heng Lee, Yu-An Li, Jin-Lung Tsai, Kuei-Wen Cheng
  • Patent number: 7108575
    Abstract: A method for fabricating a mesh structure of a tetraode field-emission display is disclosed. The mesh has a tri-layer structure including a gate layer, an insulation layer and a converging electrode layer. The converging electrode layer is selected from a metal conductive plate with a plurality of aperture, the insulation layer is coated on the converging electrode layer, and a gate is formed on the insulation layer.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: September 19, 2006
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Shie-Heng Lee, Kuei-Wen Cheng
  • Publication number: 20060202608
    Abstract: A method of fabricating a tetraode field-emission display. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
    Type: Application
    Filed: May 31, 2006
    Publication date: September 14, 2006
    Inventors: Kuo-Rong Chen, Te-Fong Chan, Jin-Shou Fang, Chih-Che Kuo, Kuei-Wen Cheng
  • Patent number: 7102279
    Abstract: An FED has a cathode, an anode and an insulating supporting device. The cathode has a plurality of cathode electron emitter layers and a cathode substrate. The cathode has a plurality of cathode ribs disposed on the cathode substrate, and the cathode ribs are used for laterally separating any respective two cathode ribs. The anode has a phosphors layer and an anode substrate. The insulating supporting device is arranged between the cathode ribs and the anode, and has a reflection layer facing the anode and a gate made of a conductive material and disposed above the cathode ribs. The reflection layer is capable of reflecting light emitted from the phosphors layer.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: September 5, 2006
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Kuei-Wen Cheng, Shie-Heng Lee
  • Patent number: 7081703
    Abstract: A tetraode field-emission display and a method of fabricating the same are disclosed. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. A glass plate is placed between the mesh and the anode to serve as a spacer. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: July 25, 2006
    Assignee: Teco Nanotech Co., Ltd.
    Inventors: Kuo-Rong Chen, Jin-Shou Fang, Kuei-Wen Cheng
  • Publication number: 20060138927
    Abstract: A method and a structure for a converging-type electron-emission source of a field-emission display are disclosed. A substrate is provided, and a silver paste is used to form a first electrode layer on the substrate by the process such as thick-film photolithography screen-printing. At least one pit is formed in the first electrode layer by etching, for example. A passivation layer is formed on the first electrode layer around the pit. A second electrode layer is formed in the recess by photolithography or electrophoresis, for example. Preferably, the second electrode layer is formed with a top surface lower than a periphery of the pit, such that a converging opening of the second electrode layer is formed over the second electrode layer. The passivation layer is then removed, followed by a step of sintering process.
    Type: Application
    Filed: February 27, 2006
    Publication date: June 29, 2006
    Inventors: Chun-Yen Hsiao, Frank Yang, Kuei-Wen Cheng
  • Publication number: 20060124235
    Abstract: A self-adhesive frame is applied in package of field emission display, the manufacturing method for the same and the package method by the same being also discussed in the specification. The self-adhesive frame can be designed as an independent component and suitable to be manufactured independently. The cathode plate and the anode plate do not need to join the process of pre-heating of the self-adhesive frame. The self-adhesive frame also has a plurality of fixing side strips for alignment of temporary fixing of the cathode plate and the anode plate. Wherein the fixing side strips do not increase the void area of the field emission display. The self-adhesive frame comprises: a main body frame having the cathode plate sealing surface and the anode plate sealing surface; and a fixing side strip extending from the outer side of the main body frame.
    Type: Application
    Filed: February 2, 2006
    Publication date: June 15, 2006
    Inventors: Frank Yang, Guo-Hua Chen, Jin-Shou Fang, Kuei-Wen Cheng
  • Publication number: 20060125066
    Abstract: A self-adhesive frame is applied in package of field emission display, the manufacturing method for the same and the package method by the same being also discussed in the specification. The self-adhesive frame can be designed as an independent component and suitable to be manufactured independently. The cathode plate and the anode plate do not need to join the process of pre-heating of the self-adhesive frame. The self-adhesive frame also has a plurality of fixing side strips for alignment of temporary fixing of the cathode plate and the anode plate. Wherein the fixing side strips do not increase the void area of the field emission display. The self-adhesive frame comprises: a main body frame having the cathode plate sealing surface and the anode plate sealing surface; and a fixing side strip extending from the outer side of the main body frame.
    Type: Application
    Filed: February 2, 2006
    Publication date: June 15, 2006
    Inventors: Frank Yang, Guo-Hua Chen, Jin-Shou Fang, Kuei-Wen Cheng