Patents by Inventor Feng-Ju Chuang
Feng-Ju Chuang 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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Publication number: 20230158241Abstract: The invention provides a needle-free injection system, which mainly includes a pressure accumulator, an output pipe, a delivery device and a fluid supply device. The front end of the pressure accumulator is connected to the output pipe, and the bottom end of the pressure accumulator can be connected to the fluid supply device and/or a hand-holding device. A control panel and a shooting button are fixed on the outer surface of the pressure accumulator. The control panel is electrically connected to the delivery device, and can store a delivery program to control the delivery steps of a delivery material stored in the delivery device, such as the delivery time, delivery quantity or delivery times of the delivery material into the output pipe. In this way, not only the convenience of use can be improved, but also the use space of the needle-free injection system can be reduced.Type: ApplicationFiled: November 25, 2022Publication date: May 25, 2023Inventor: FENG-JU CHUANG
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Patent number: 6933522Abstract: An organic electroluminescent device with the feature of three-wavelength luminescence is provided. The device includes a hole transporting layer, an electron blocking layer, a first host material layer, a second host material layer, a hole blocking layer, and an electron transporting layer placed between an anode and a cathode in turn. In which, the first host material layer has a first guest luminous substance mixed therein for projecting a first color light source (B), while the second host material layer correspondingly has a second guest luminous substance and a third guest luminous substance mixed therein for projecting a second color light source (G) and a third color light source (R), respectively, under the effect of an external bias voltage, wherein said second guest luminous substance or said third guest luminous substance may be a phosphorescence substance.Type: GrantFiled: September 9, 2003Date of Patent: August 23, 2005Assignee: Opto Tech CorporationInventors: Ming-Der Lin, Feng-Ju Chuang, Jwo-Huei Jou, Yen-Shih Huang
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Patent number: 6893312Abstract: A white light emitting organic electro-luminescent (EL) device and a method for fabricating the same are provided. The device comprises: a substrate; a bottom electrode formed on a top surface of the substrate; at least an organic layer comprising an organic emitting layer formed on a surface of the bottom electrode to emit a first-color light; at least a transparent opposed electrode formed on a surface of the organic layer; and a sealing cap layer covering the organic layer and the transparent opposed electrode, wherein a color conversion layer is disposed on an inner surface of the sealing cap layer for converting a percentage of the first-color light into a second-color light and a third-color light. Therefore, a white light source is achieved by mixing the three primary colors.Type: GrantFiled: August 15, 2003Date of Patent: May 17, 2005Assignee: Opto Tech CorporationInventor: Feng-Ju Chuang
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Patent number: 6894433Abstract: An organic electro-luminescent (EL) device is provided. The present invention discloses that the number of moisture-absorbing channels is increased to prevent the generation of dark spots and to improve the luminescence quality of the organic EL device. The organic electro-luminescent (EL) device comprises: a substrate; at least a bottom electrode, formed on the substrate, a plurality of isolation ribs for moisture-absorption and insulation, formed on a surface of the bottom electrode, intersecting the bottom electrode, wherein regions between every two of the isolation ribs are pre-determined light-emitting regions; at least an organic layer comprising an organic electro-luminescent layer, formed on a surface of the bottom electrode in the pre-determined light-emitting region; and at least an opposed electrode, formed on a surface of the organic layer.Type: GrantFiled: November 12, 2002Date of Patent: May 17, 2005Assignee: Opto Tech CorporationInventor: Feng-Ju Chuang
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Patent number: 6762554Abstract: The present invention discloses an electroluminescent device with a drying film and a method for fabricating the same. The present invention is characterized in that the method comprises: providing a substrate; forming, in sequence from substrate up, a transparent electrode, a luminescent layer, and an opposed electrode; and forming a drying film by providing a raw material composed of barium (Ba), magnesium (Mg) or calcium (Ca) to react with a gaseous reactant composed of oxygen on the surface of the opposed electrode. The drying film composed of barium oxide (BaO), magnesium oxide (MgO) or calcium oxide (CaO) can be employed to absorb the moisture. Therefore, the generation of dark spots can be prevented and the reliability of the device can be improved.Type: GrantFiled: February 22, 2002Date of Patent: July 13, 2004Assignee: Opto Tech CorporationInventors: Jwo-Huei Jou, Min-Der Lin, Yung-Sheng Chiu, Yen-Shih Huang, San-Bao Lin, Feng-Ju Chuang
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Patent number: 6759145Abstract: The present invention discloses a white light emitting organic electroluminescent (EL) device and a method for fabricating the same. The device comprises: a substrate; an anode formed on the substrate; at least one hole transporting layer formed on the anode; at least one luminescent layer (DPVBi) formed on the hole transporting layer, wherein a first dopant (DCM2) is doped into the luminescent layer; at least one electron transporting layer formed on the luminescent layer, wherein a second dopant (C6) is doped into the electron transporting layer; and a cathode formed on the electron transporting layer; wherein a first light (red) is emitted by the first dopant, a second light (green) is emitted by the second dopant, and a third light (blue) is emitted by the luminescent layer when the device is applied with a bias voltage.Type: GrantFiled: November 27, 2001Date of Patent: July 6, 2004Assignee: Opto Tech CorporationInventors: Ming-Der Lin, San Bao Lin, Feng-Ju Chuang
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Publication number: 20040104394Abstract: An organic electroluminescent device with the feature of three-wavelength luminescence is provided. The device includes a hole transporting layer, an electron blocking layer, a first host material layer, a second host material layer, a hole blocking layer, and an electron transporting layer placed between an anode and a cathode in turn. In which, the first host material layer has a first guest luminous substance mixed therein for projecting a first color light source (B), while the second host material layer correspondingly has a second guest luminous substance and a third guest luminous substance mixed therein for projecting a second color light source (G) and a third color light source (R), respectively, under the effect of an external bias voltage, wherein said second guest luminous substance or said third guest luminous substance may be a phosphorescence substance.Type: ApplicationFiled: September 9, 2003Publication date: June 3, 2004Inventors: Ming-Der Lin, Feng-Ju Chuang, Jwo-Huei Jou, Yen-Shih Huang
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Publication number: 20040090178Abstract: An organic electro-luminescent (EL) device is provided. The present invention discloses that the number of moisture-absorbing channels is increased to prevent the generation of dark spots and to improve the luminescence quality of the organic EL device. The organic electro-luminescent (EL) device comprises: a substrate; at least a bottom electrode, formed on the substrate, a plurality of isolation ribs for moisture-absorption and insulation, formed on a surface of the bottom electrode, intersecting the bottom electrode, wherein regions between every two of the isolation ribs are pre-determined light-emitting regions; at least an organic layer comprising an organic electro-luminescent layer, formed on a surface of the bottom electrode in the pre-determined light-emitting region; and at least an opposed electrode, formed on a surface of the organic layer.Type: ApplicationFiled: November 12, 2002Publication date: May 13, 2004Inventor: Feng-Ju Chuang
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Patent number: 6717176Abstract: A white light emitting organic electro-luminescent (EL) device and a method for fabricating the same are provided. The device comprises: a substrate; a bottom electrode formed on a top surface of the substrate; at least an organic layer comprising an organic emitting layer formed on a surface of the bottom electrode to emit a first-color light; at least a transparent opposed electrode formed on a surface of the organic layer; and a sealing cap layer covering the organic layer and the transparent opposed electrode, wherein a color conversion layer is disposed on an inner surface of the sealing cap layer for converting a percentage of the first-color light into a second-color light and a third-color light. Therefore, a white light source is achieved by mixing the three primary colors.Type: GrantFiled: November 12, 2002Date of Patent: April 6, 2004Assignee: Opto Tech CorporationInventor: Feng-Ju Chuang
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Publication number: 20030160563Abstract: The present invention discloses an electroluminescent device with a drying film and a method for fabricating the same. The present invention is characterized in that the method comprises: providing a substrate; forming, in sequence from substrate up, a transparent electrode, a luminescent layer, and an opposed electrode; and forming a drying film by providing a raw material composed of barium (Ba), magnesium (Mg) or calcium (Ca) to react with a gaseous reactant composed of oxygen on the surface of the opposed electrode. The drying film composed of barium oxide (BaO), magnesium oxide (MgO) or calcium oxide (CaO) can be employed to absorb the moisture. Therefore, the generation of dark spots can be prevented and the reliability of the device can be improved.Type: ApplicationFiled: February 22, 2002Publication date: August 28, 2003Inventors: Jwo-Huei Jou, Min-Der Lin, Yung-Sheng Chiu, Yen-Shih Huang, San-Bao Lin, Feng-Ju Chuang
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Publication number: 20030099860Abstract: The present invention discloses a white light emitting organic electroluminescent (EL) device and a method for fabricating the same. The device comprises: a substrate; an anode formed on the substrate; at least one hole transporting layer formed on the anode; at least one luminescent layer (DPVBi) formed on the hole transporting layer, wherein a first dopant (DCM2) is doped into the luminescent layer; at least one electron transporting layer formed on the luminescent layer, wherein a second dopant (C6) is doped into the electron transporting layer; and a cathode formed on the electron transporting layer; wherein a first light (red) is emitted by the first dopant, a second light (green) is emitted by the second dopant, and a third light (blue) is emitted by the luminescent layer when the device is applied with a bias voltage.Type: ApplicationFiled: November 27, 2001Publication date: May 29, 2003Inventors: Ming-Der Lin, San Bao Lin, Feng-Ju Chuang
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Patent number: 6445008Abstract: A photo sensing device uses surface-emitting LED as light emitter to increase responsive of light receiver and prevent the short circuit of connection wires, and the manufacturing method thereof. The light emitter is directly mounted on top front surface of an encapsulating epoxy enclosing a light receiver. The light emitted from backside of the light emitter passes through the encapsulating epoxy and is directly absorbed by the light receiver. The response is enhanced as compared with prior art.Type: GrantFiled: October 25, 2001Date of Patent: September 3, 2002Assignee: Opto Tech CorporationInventors: Ming-Der Lin, Feng Ju Chuang, Wen Liang Tseng, Chia Chen Chang
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Publication number: 20020105265Abstract: A method for making an organic electroluminescent device comprises the steps of: f; forming a plurality of trenches penetrating into the substrate; forming an expected light emitting region between two adjacent trenches; forming a first electrode, an organic layer and a second electrode on each expected light emitting region; and forming an insulating passivation layer covering the resulting structure. The bottom of the trench is lower than the bottom of the first electrode on the expected light emitting region. Therefore, the trench provides sufficient isolation. The manufacturing method does not involve an interlayer insulating film, the second electrode and the organic layer can be precisely formed to simply processing and increase the effective light-emitting area.Type: ApplicationFiled: April 1, 2002Publication date: August 8, 2002Inventor: Feng-Ju Chuang
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Publication number: 20020017653Abstract: A blue light emitting diode with sapphire substrate and method for making the same is disclosed. The blue light emitting diode comprises a sapphire substrate having a at least one channel penetrating the sapphire substrate, two GaN thin film with similar thickness on top and bottom surface of the sapphire substrate and in contact with in the channel, an anode and a cathode on the bottom surface of the lower GaN thin film and the upper surface of the epitaxy layer. The arrangement of the channel provides a conductive passage between the anode and the cathode and realizes a vertical type LED with reduced operation area. Moreover, the polishing process is simplified and the yield is enhanced.Type: ApplicationFiled: January 31, 2001Publication date: February 14, 2002Inventor: Feng-Ju Chuang
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Patent number: 6004471Abstract: The structure of the sensing element of a platinum resistance thermometer and method for manufacturing the same, in which the silicon wafer is used as a substrate. A silicon substrate is etched to form a desired wiring pattern, then a silicon dioxide layer is grown as a layer of thermal oxide on the silicon substrate by heating the etched substrate in an oxygen-containing atmosphere. After a platinum film is deposited onto the surface of the silicon dioxide layer, the platinum-coated substrate is subject to gentle polishing. The platinum membrane outside the etched groove is easily detached while the platinum layer inside the etched groove remains attached. Thus a platinum circuit with a desired circuit pattern is formed on the substrate. After heat treatment in a temperature range of 750.degree. C..about. 1500.degree. C. and further processing, the sensing element of a platinum resistance thermometer is obtained.Type: GrantFiled: February 5, 1998Date of Patent: December 21, 1999Assignee: Opto Tech CorporationInventor: Feng-Ju Chuang