Patents by Inventor Chi-Chih Liao

Chi-Chih Liao 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: 11973164
    Abstract: A light-emitting device includes a substrate including a top surface; a semiconductor stack including a first semiconductor layer, an active layer and a second semiconductor layer formed on the substrate, wherein a portion of the top surface is exposed; a distributed Bragg reflector (DBR) formed on the semiconductor stack and contacting the portion of the top surface of the substrate; a metal layer formed on the distributed Bragg reflector (DBR), contacting the portion of the top surface of the substrate and being insulated with the semiconductor stack; and an insulation layer formed on the metal layer and contacting the portion of the top surface of the substrate.
    Type: Grant
    Filed: January 3, 2023
    Date of Patent: April 30, 2024
    Assignee: EPISTAR CORPORATION
    Inventors: Che-Hung Lin, Chien-Chih Liao, Chi-Shiang Hsu, De-Shan Kuo, Chao-Hsing Chen
  • Publication number: 20240136444
    Abstract: A flash memory device and method of making the same are disclosed. The flash memory device is located on a substrate and includes a floating gate electrode, a tunnel dielectric layer located between the substrate and the floating gate electrode, a smaller length control gate electrode and a control gate dielectric layer located between the floating gate electrode and the smaller length control gate electrode. The length of a major axis of the smaller length control gate electrode is less than a length of a major axis of the floating gate electrode.
    Type: Application
    Filed: December 22, 2023
    Publication date: April 25, 2024
    Inventors: Yu-Chu Lin, Chi-Chung Jen, Wen-Chih Chiang, Yi-Ling Liu, Huai-Jen Tung, Keng-Ying Liao
  • Publication number: 20090286426
    Abstract: A connector for the network device comprises a connecting body and a plurality of pins. The connecting body comprises a first side and a second side, and the pins comprise a first row of pins and a second row of pins, wherein the first row of pins are provided with the first side, and the second row of pins are provided with the second side, and further, both of which comprise a plurality of negative pins and positive pins, wherein the negative pins and positive pins are spread within the first row of pins and the second row of pins alternately and evenly. Each of negative pins and adjacent positive pins are combined to be a connecting port in turn with horizontal symmetry type, such that the interference between the connecting ports can be restrained efficiently, thereby, the transmission efficiency for the network device will be improved accordingly.
    Type: Application
    Filed: September 3, 2008
    Publication date: November 19, 2009
    Inventors: Chi-Chih Liao, Hung Hsun Lan
  • Patent number: 7615778
    Abstract: An organic electroluminescent device includes a first organic thin film transistor, a second organic thin film transistor and at least an organic functional layer. The organic functional layer is disposed between the second organic thin film transistor and the first organic thin film transistor. By applying voltages in the first organic thin film transistor and the second organic thin film transistor at the same time, a voltage difference between the two transistors is produced to make electrons and electric holes move into the organic functional layer and re-combine therein for emitting light. The integration of the organic thin film transistor and the organic electroluminescent device can widen aperture ratio and increase process reliability.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: November 10, 2009
    Assignee: RITDisplay Corporation
    Inventors: En-Chiang Lin, Chi-Chih Liao
  • Patent number: 7315117
    Abstract: A full color display panel comprises an organic light-emitting area, a white-light producing layer, a color-separating layer and a transparent substrate. In this case, the organic light-emitting area comprises a plurality of pixels for emitting short wavelength light. The color-separating layer is doped with a fluorescent material and/or a phosphorescent material in a transparent protecting medium. The color-separating layer comprises a light-shielding frame and a plurality of color filters. The light-shielding frame is disposed around the peripheral of the color filters. The color-separating layer is disposed on the transparent substrate. The white-light producing layer is disposed above the color-separating layer. The organic light-emitting area is disposed above the white-light producing layer.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: January 1, 2008
    Assignee: RiTdisplay Corporation
    Inventors: Tien Rong Lu, Chi-Chung Chen, Chi-Chih Liao
  • Patent number: 7144638
    Abstract: An organic light-emitting diode comprises an anode, an organic electroluminescent layer, a metal doped layer, and a cathode, in sequence, on a substrate; wherein the metal doped layer comprises an organic compound represented by the formula (1) doped with a metal.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: December 5, 2006
    Assignee: RiTdisplay Corporation
    Inventors: Man-Kit Leung, Kuei-Hui Yang, Chi-Chih Liao, Hung-Lin Chen, Yung-Chih Lee, Yi-Meen Chou, Tzu-Chin Tang
  • Publication number: 20060197460
    Abstract: An organic electroluminescent device includes a first organic thin film transistor, a second organic thin film transistor and at least an organic functional layer. The organic functional layer is disposed between the second organic thin film transistor and the first organic thin film transistor. By applying voltages in the first organic thin film transistor and the second organic thin film transistor at the same time, a voltage difference between the two transistors is produced to make electrons and electric holes move into the organic functional layer and re-combine therein for emitting light. The integration of the organic thin film transistor and the organic electroluminescent device can widen aperture ratio and increase process reliability.
    Type: Application
    Filed: December 6, 2005
    Publication date: September 7, 2006
    Inventors: En-Chiang Lin, Chi-Chih Liao
  • Publication number: 20060176292
    Abstract: A voltage feedback controlled circuit for an organic electroluminescent panel comprises at least one power supply and a voltage feedback detecting controlling circuit. In this case, the voltage feedback detecting controlling circuit connects with the organic electroluminescent panel and the power supply. The voltage feedback detecting controlling circuit detects at least one working voltage of the organic electroluminescent panel, and outputs a controlling signal depending on the relation between the working voltage and luminance of the organic electroluminescent panel. The power supply outputs at least one driving current or driving voltage depending on the controlling signal to drive the organic electroluminescent panel.
    Type: Application
    Filed: February 10, 2005
    Publication date: August 10, 2006
    Inventor: Chi-Chih Liao
  • Patent number: 7057341
    Abstract: A full color display panel comprises an organic light-emitting area, a spectrum-modulation layer, a color-separating layer and a transparent substrate. In this case, the organic light-emitting area includes a plurality of pixels for emitting white light. The spectrum-modulation layer is doped with a fluorescent material and/or a phosphorescent material in a transparent protecting medium. The color-separating layer includes a light-shielding frame and a plurality of color filters. The light-shielding frame is disposed around the peripheral of the color filters. The color-separating layer is disposed on the transparent substrate. The spectrum-modulation layer is disposed above the color-separating layer. The organic light-emitting area is disposed above the spectrum-modulation layer.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: June 6, 2006
    Assignee: RiTdisplay Corporation
    Inventors: Chi-Chung Chen, Tien Rong Lu, Chi-Chih Liao
  • Publication number: 20050236605
    Abstract: An organic light-emitting diode comprises an anode, an organic electroluminescent layer, a metal doped layer, and a cathode, in sequence, on a substrate; wherein the metal doped layer comprises an organic compound represented by the formula (1) doped with a metal.
    Type: Application
    Filed: April 22, 2005
    Publication date: October 27, 2005
    Inventors: Man-Kit Leung, Kuei-Hui Yang, Chi-Chih Liao, Hung-Lin Chen, Yung-Chih Lee, Yi-Meen Chou, Tzu-Chin Tang
  • Patent number: 6930658
    Abstract: A contrast-adjustable display via an organic light-emitting device includes a transparent substrate, a light-detectable unit, a current-detectable unit, an organic light-emitting unit, a driving unit and a controlling unit. The light-detectable unit for detecting an external light intensity is formed on the transparent substrate, and then generates a current intensity based on the external light intensity. The current-detectable unit for detecting the current intensity is connected to the light-detectable unit. The organic light-emitting unit is formed on the transparent substrate for generating light. The driving unit connects to and drives the light-detectable unit and organic light-emitting unit, respectively. The controlling unit is connected to the current-detectable unit, and controls the driving unit depending on the current intensity.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: August 16, 2005
    Assignee: RIT Display Corporation
    Inventors: Jiun-Haw Lee, Chi-Chih Liao, Peir-Jy Hu
  • Patent number: 6906340
    Abstract: An organic light-emitting diode comprises an anode, an organic electroluminescent layer, a metal doped layer, and a cathode, in sequence, on a substrate; wherein the metal doped layer comprises an organic compound represented by the formula (1) doped with a metal.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: June 14, 2005
    Assignee: RiTdisplay Corporation
    Inventors: Man-Kit Leung, Kuei-Hui Yang, Chi-Chih Liao, Hung-Lin Chen, Yung-Chih Lee, Yi-Meen Chou, Tzu-Chin Tang
  • Patent number: 6844674
    Abstract: The present invention provides an organic light emitting diode display device, having a transparent substrate; a plurality of anodes on the transparent substrate; an organic functional layer on the transparent substrate, wherein the transparent substrate covers the anodes; a light-absorbing layer on the organic functional layer, wherein the light-absorbing layer is an organic material layer and the organic material layer is doped with at least a metal; and a plurality of cathodes on the light-absorbing layer. The light-absorbing layer of the present invention can effectively reduce the amount of the reflected light, thereby raising the contrast ratio and enhancing the recognition ability of the display device.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: January 18, 2005
    Assignee: RiTdisplay Corporation
    Inventors: Mei-Ying Chang, Chi-Chih Liao, Jiun-Haw Lee
  • Publication number: 20050001544
    Abstract: A full color display panel comprises an organic light-emitting area, a spectrum-modulation layer, a color-separating layer and a transparent substrate. In this case, the organic light-emitting area includes a plurality of pixels for emitting white light. The spectrum-modulation layer is doped with a fluorescent material and/or a phosphorescent material in a transparent protecting medium. The color-separating layer includes a light-shielding frame and a plurality of color filters. The light-shielding frame is disposed around the peripheral of the color filters. The color-separating layer is disposed on the transparent substrate. The spectrum-modulation layer is disposed above the color-separating layer. The organic light-emitting area is disposed above the spectrum-modulation layer.
    Type: Application
    Filed: May 27, 2004
    Publication date: January 6, 2005
    Inventors: Chi-Chung Chen, Tien Lu, Chi-Chih Liao
  • Publication number: 20040245921
    Abstract: A full color display panel comprises an organic light-emitting area, a white-light producing layer, a color-separating layer and a transparent substrate. In this case, the organic light-emitting area comprises a plurality of pixels for emitting short wavelength light. The color-separating layer is doped with a fluorescent material and/or a phosphorescent material in a transparent protecting medium. The color-separating layer comprises a light-shielding frame and a plurality of color filters. The light-shielding frame is disposed around the peripheral of the color filters. The color-separating layer is disposed on the transparent substrate. The white-light producing layer is disposed above the color-separating layer. The organic light-emitting area is disposed above the white-light producing layer.
    Type: Application
    Filed: June 1, 2004
    Publication date: December 9, 2004
    Inventors: Tien Rong Lu, Chi-Chung Chen, Chi-Chih Liao
  • Patent number: 6822257
    Abstract: An organic light emitting diode (OLED) device comprises a substrate, an anode layer, a luminescence layer, a hole blocking layer and a cathode layer. The anode layer is disposed on the substrate; the luminescence layer is disposed on the anode layer; the hole blocking layer is disposed on the luminescence layer; the cathode layer is disposed on the hole blocking layer. In addition the luminescence layer comprises a hole transporting material and a phosphorescent material, wherein the weight percentage of the bole transporting material and the phosphorescent material is between 40%˜60%.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: November 23, 2004
    Assignee: RiTdisplay Corporation
    Inventors: Yung-Chih Lee, Wei-Su Chen, Chi-Chih Liao, Jiun-Haw Lee
  • Publication number: 20040144974
    Abstract: An organic light emitting diode (OLED) device that comprises a substrate, an anode layer, a light-emitting layer, a hole blocking layer and a cathode layer. The anode layer is positioned over the substrate and the light-emitting layer is positioned over the anode layer. The hole blocking layer is positioned over the light-emitting layer and the cathode layer is positioned over the hole blocking layer. The light-emitting layer is an organic material layer consisted of hole transporting material and phosphorescent material and that the concentration of hole transporting material and phosphorescent material in the organic material layer is between 40% to 60% by weight.
    Type: Application
    Filed: January 29, 2003
    Publication date: July 29, 2004
    Inventors: Yung-Chih Lee, Wei-Su Chen, Chi-Chih Liao, Jiun-Haw Lee
  • Publication number: 20040124767
    Abstract: An organic light-emitting diode comprises an anode, an organic electroluminescent layer, a metal doped layer, and a cathode, in sequence, on a substrate; wherein the metal doped layer comprises an organic compound represented by the formula (1) doped with a metal.
    Type: Application
    Filed: October 23, 2003
    Publication date: July 1, 2004
    Inventors: Man-Kit Leung, Kuei-Hui Yang, Chi-Chih Liao, Hung-Lin Chen, Yung-Chih Lee, Yi-Meen Chou, Tzu-Chin Tang
  • Publication number: 20030230974
    Abstract: The present invention provides an organic light emitting diode display device, comprising: a transparent substrate; a plurality of anodes on the transparent substrate; an organic functional layer on the transparent substrate, wherein the transparent substrate covers the anodes; a light-absorbing layer on the organic functional layer, wherein the light-absorbing layer is an organic material layer and the organic material layer is doped with at least a metal; and a plurality of cathodes on the light-absorbing layer. The light-absorbing layer of the present invention can effectively reduce the amount of the reflected light, thereby raising the contrast ratio and enhancing the recognition ability of the display device.
    Type: Application
    Filed: June 12, 2003
    Publication date: December 18, 2003
    Inventors: Mei-Ying Chang, Chi-Chih Liao, Jiun-Haw Lee
  • Publication number: 20030214240
    Abstract: A contrast-adjustable display via an organic light-emitting device includes a transparent substrate, a light-detectable unit, a current-detectable unit, an organic light-emitting unit, a driving unit and a controlling unit. The light-detectable unit for detecting an external light intensity is formed on the transparent substrate, and then generates a current intensity based on the external light intensity. The current-detectable unit for detecting the current intensity is connected to the light-detectable unit. The organic light-emitting unit is formed on the transparent substrate for generating light. The driving unit connects to and drives the light-detectable unit and organic light-emitting unit, respectively. The controlling unit is connected to the current-detectable unit, and controls the driving unit depending on the current intensity. The invention also discloses a contrast-adjustable display via an organic light-emitting device further including a first driving unit and a second driving unit.
    Type: Application
    Filed: May 9, 2003
    Publication date: November 20, 2003
    Inventors: Jiun-Haw Lee, Chi-Chih Liao, Peir-Jy Hu