Patents by Inventor Mao FENG

Mao FENG 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: 9989919
    Abstract: A method for forming a hydraulic transfer film includes: (a) forming a water-soluble sacrificial layer on a water-soluble substrate; (b) forming a first holographic pattern on the water-soluble sacrificial layer; (c) forming a pattern forming layer on the water-soluble sacrificial layer such that the pattern forming layer is formed with a second holographic pattern on a surface that contacts the first holographic pattern and being complementary to the first holographic pattern, the pattern forming layer having a water-soluble region and an oil-soluble region; (d) forming an oil-soluble base layer on the pattern forming layer; and (e) forming an activating layer that is on the oil-soluble base layer and that includes a curable activating agent.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: June 5, 2018
    Assignee: Daigin Chemical Co., Ltd.
    Inventors: Han-Cheng Wu-Lu, Chao-Chein Huang, Mao-Feng Hsu
  • Publication number: 20170369653
    Abstract: A polyamic acid as a polymer of a dianhydride monomer and a diamine monomer is disclosed. The dianhydride monomer is an aromatic tetrabasic carboxylic acid dianhydride monomer. The diamine monomer comprises a diamine monomer containing pyrimidinyl and an aromatic diamine monomer. A polyimide, a polyimide film and a copper clad laminate using the polyamic acid are also provided.
    Type: Application
    Filed: April 26, 2017
    Publication date: December 28, 2017
    Inventors: YU-WEN KAO, MAO-FENG HSU, SHOU-JUI HSIANG, SZU-HSIANG SU, CHIA-YIN TENG
  • Publication number: 20170362361
    Abstract: A non-reactive photosensitive resin composition storable at room temperature comprises a carboxylic acid-modified bisphenol epoxy (meth)acrylate, a photosensitive monomer, a photosensitive prepolymer, a photo-initiator, and a coloring agent. Each of the carboxylic acid-modified bisphenol epoxy (meth)acrylate, photosensitive monomer, and photosensitive prepolymer has a plurality of carbon-carbon double bonds, so that the carboxylic acid-modified bisphenol epoxy (meth)acrylate, photosensitive monomer and photosensitive prepolymer may be polymerized to form a dense cross-linking network structure when the photosensitive resin composition is exposed to ultraviolet radiation. A film and a printed circuit board using the photosensitive resin composition are also provided.
    Type: Application
    Filed: April 11, 2017
    Publication date: December 21, 2017
    Inventors: MAO-FENG HSU, CHEN-FENG YEN, SHOU-JUI HSIANG, YEN-CHIN HSIAO
  • Publication number: 20170275508
    Abstract: A resin composition suitable as an adhesive layer and as a circuit board substrate includes an acrylic resin, a non-photosensitive resin with carboxyl groups, nano core-shell particles, a photoinitiator, and a solvent, such adhesive layer and circuit board substrate being high-strength and temperature-resistant whilst retaining flexibility. The acrylic resin is in an amount by weight of 150 parts in the resin composition, the non-photosensitive resin is in an amount by weight of 30 parts to 80 parts in the resin composition, the nano core-shell particles are in an amount by weight of 5 parts to 30 parts in the resin composition, and the photoinitiator is in an amount by weight of 1 part to 10 parts in the resin composition.
    Type: Application
    Filed: June 23, 2016
    Publication date: September 28, 2017
    Inventors: MAO-FENG HSU, CHEN-FENG YEN, YEN-CHIN HSIAO
  • Publication number: 20170079112
    Abstract: A multi-stage LED driving circuit capable of eliminating current undershoot, including: an LED module having a plurality of stage output terminals; a plurality of switch units coupled with the stage output terminals to receive a plurality of branch currents and provide a plurality of current sensing signals; a current regulation circuit, having a control end coupled with a variable reference voltage, and a current path for receiving the branch currents; and a control unit, receiving the current sensing signals and a voltage signal at an input terminal of the current path, and controlling the switch units; wherein, the control unit uses every two adjacent signals of the current sensing signals to get a ratio in turn to determine whether to switch off a corresponding switch unit of the switch units after a deferred time, and uses the voltage signal to determine whether to change the deferred time.
    Type: Application
    Filed: January 26, 2016
    Publication date: March 16, 2017
    Applicant: Luxmill Electronic Co., Ltd.
    Inventors: Mao-Feng Lan, Tien-Pao Lee, Hsin-Hen Peng
  • Patent number: 9539849
    Abstract: A hydraulic transfer film includes: a water-soluble substrate, a pattern-forming layer formed on the water-soluble substrate and having a water-soluble region and an oil-soluble region, an oil-soluble pattern layer formed on the pattern-forming layer, an oil-soluble base layer formed on the oil-soluble pattern layer, and an activating layer including a curable activating agent that permeates into the oil-soluble region, the oil-soluble pattern layer, and the oil-soluble base layer such that the oil-soluble region, the oil-soluble pattern layer, and the oil-soluble base layer are partly soluble in the curable activating agent. A method of forming the hydraulic transfer film and a pattern film are also disclosed.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: January 10, 2017
    Assignee: Young Sun Chemtrade Co., Ltd.
    Inventor: Mao-Feng Hsu
  • Publication number: 20150277376
    Abstract: A method for forming a hydraulic transfer film includes: (a) forming a water-soluble sacrificial layer on a water-soluble substrate; (b) forming a first holographic pattern on the water-soluble sacrificial layer; (c) forming a pattern forming layer on the water-soluble sacrificial layer such that the pattern forming layer is formed with a second holographic pattern on a surface that contacts the first holographic pattern and being complementary to the first holographic pattern, the pattern forming layer having a water-soluble region and an oil-soluble region; (d) forming an oil-soluble base layer on the pattern forming layer; and (e) forming an activating layer that is on the oil-soluble base layer and that includes a curable activating agent.
    Type: Application
    Filed: June 11, 2015
    Publication date: October 1, 2015
    Inventors: Han-Cheng Wu-Lu, Chao-Chein Huang, Mao-Feng Hsu
  • Patent number: 9101020
    Abstract: An LED driver having one end coupled with an LED module and another end coupled to a ground, being capable of generating a duty current and a duty in response to a dropout voltage across the LED driver in a way that, the duty current will increase and the duty will decrease when the dropout voltage exceeds a first threshold, and the duty current will decrease and the duty will increase when the dropout voltage falls below a second threshold.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: August 4, 2015
    Assignee: LUXMILL ELECTRONIC CO., LTD.
    Inventors: Shih Yu Wang, Hui Teng Tsai, Mao Feng Lan, Tien Pao Lee
  • Patent number: 9030178
    Abstract: A power converter used in the current control circuit and control method, consisting of a converter, a voltage divider circuit, a current sampling circuit, a first gain circuit, a differential amplifier, a second gain circuit, a multiplier, a saw tooth wave generator, a modulation comparator, and a driver. The invention samples inductor current through the current sampling circuit and generates the current sense signal, then processes again. With the differential amplifier, it compares the feedback voltage from the voltage divider circuit with the reference voltage, and the results along a modulation comparator output a drive signal to control the duty cycle in order to avoid the generation of inrush current. The present invention avoids inrush current caused by the large drive signal and achieves a good response rate and better system stability.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: May 12, 2015
    Assignee: Luxmill Electronic Co., Ltd.
    Inventors: Yu-Cheng Chang, Mao-feng Lan, Chung-hung Lin
  • Publication number: 20150037538
    Abstract: A hydraulic transfer film includes: a water-soluble substrate, a pattern-forming layer formed on the water-soluble substrate and having a water-soluble region and an oil-soluble region, an oil-soluble pattern layer formed on the pattern-forming layer, an oil-soluble base layer formed on the oil-soluble pattern layer, and an activating layer including a curable activating agent that permeates into the oil-soluble region, the oil-soluble pattern layer, and the oil-soluble base layer such that the oil-soluble region, the oil-soluble pattern layer, and the oil-soluble base layer are partly soluble in the curable activating agent. A method of forming the hydraulic transfer film and a pattern film are also disclosed.
    Type: Application
    Filed: March 20, 2014
    Publication date: February 5, 2015
    Inventor: Mao-Feng Hsu
  • Publication number: 20150015159
    Abstract: An LED driver having one end coupled with an LED module and another end coupled to a ground, being capable of generating a duty current and a duty in response to a dropout voltage across the LED driver in a way that, the duty current will increase and the duty will decrease when the dropout voltage exceeds a first threshold, and the duty current will decrease and the duty will increase when the dropout voltage falls below a second threshold.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Inventors: Shih Yu WANG, Hui Teng TSAI, Mao Feng LAN, Tien Pao LEE
  • Publication number: 20140191985
    Abstract: A method and a device for controlling an electronic device having a touch screen are provided. The present method includes displaying a plurality of first type sub-images on the touch screen at an original angle when the electronic device is in a first state, where the first type sub-images constitute a first operation screen of the first state. The present method also includes detecting a sliding operation performed on the touch screen and flipping at least one of the first type sub-images according to the sliding operation. The present method further includes when the sliding operation corresponds to a specific gesture, flipping all the first type sub-images to a maximum angle to display a second operation screen of a second state of the electronic device and switching the electronic device from the first state to the second state.
    Type: Application
    Filed: July 5, 2013
    Publication date: July 10, 2014
    Inventors: Yu-Mao Feng, Chia-Hui Feng, Yu-Jing Wang
  • Publication number: 20140119076
    Abstract: A power converter used in the current control circuit and control method, consisting of a converter, a voltage divider circuit, a current sampling circuit, a first gain circuit, a differential amplifier, a second gain circuit, a multiplier, a saw tooth wave generator, a modulation comparator, and a driver. The invention samples inductor current through the current sampling circuit and generates the current sense signal, then processes again. With the differential amplifier, it compares the feedback voltage from the voltage divider circuit with the reference voltage, and the results along a modulation comparator output a drive signal to control the duty cycle in order to avoid the generation of inrush current. The present invention avoids inrush current caused by the large drive signal and achieves a good response rate and better system stability.
    Type: Application
    Filed: August 26, 2013
    Publication date: May 1, 2014
    Applicant: Luxmill Electronic Co., Ltd
    Inventors: Yu-Cheng CHANG, Mao-feng LAN, Chung-hung LIN
  • Publication number: 20130147870
    Abstract: A printing method for three-dimensional painting by UV digital printing device has acts of: First, preparing a printing device having a white print set and a color print set. Second, moving the printing device transversely from one side to the other side of an object for multiple times, wherein the two print sets respectively print on two adjacent zones. Third, moving the printing device longitudinally to next zone on the object. Fourth, repeating the second and third acts until the printing device moves over a last zone on the object. The printing device moves longitudinally after the printing device moves transversely to and fro to finish the height of a zone. Thus, the printing device completes all the heights and the colors in one time of longitudinal moving. Then printing consumes less time and the printing device therefore does not have to be orientated again.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 13, 2013
    Applicants: DIGITAL PHOTONICS CORPORATION, ANDERSON INDUSTRIAL CORP.
    Inventors: Awen YEH, Kai LIU, Jim LIU, Chen-Ying CHENG, Chih-Yi LAI, Mao-Feng TU
  • Patent number: 8334531
    Abstract: The present invention discloses a high-molecule-based organic light-emitting diode (OLED) and a fabrication method thereof. The high-molecule-based OLED comprises a layer selected from a group consisting of an organic emissive layer, a first emission-auxiliary layer and a second emission-auxiliary layer. The organic emissive layer, first emission-auxiliary layer or second emission-auxiliary layer comprises a molecular material having a molecular weight of larger than approximately 730 g mol?1, and is formed by a solution-process.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: December 18, 2012
    Assignee: National Tsing Hua University
    Inventors: Jwo-Huei Jou, Wei-Ben Wang, Mao-Feng Hsu, Chun-Jang Wang, Yu-Chiao Chung
  • Patent number: 8216634
    Abstract: The present invention discloses a high-molecule-based organic light-emitting diode (OLED) and a fabrication method thereof. The high-molecule-based OLED comprises a layer selected from a group consisting of an organic emissive layer, a first emission-auxiliary layer and a second emission-auxiliary layer. The organic emissive layer, first emission-auxiliary layer or second emission-auxiliary layer comprises a molecular material having a molecular weight of larger than approximately 730 g mol?1, and is formed by a solution-process.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: July 10, 2012
    Assignee: National Tsing Hua University
    Inventors: Jwo-Huei Jou, Wei-Ben Wang, Mao-Feng Hsu, Chun-Jang Wang, Yu-Chiao Chung
  • Publication number: 20120061616
    Abstract: The present invention discloses a modified nano-dot and a fabrication method thereof. The modified nano-dot comprises a surface portion having a functional group and a core portion comprising a polymeric metal oxide, polymeric metalloid oxide or polymeric metal alloy oxide. The mean particle size of the modified nano-dot is 1-100 nm, preferably 1-10 nm. The modified nano-dot capable of modulating a carrier flux can be further applied to the element manufacture in the organic semiconductor industry, optoelectronics industry, and solar cell industry.
    Type: Application
    Filed: November 17, 2011
    Publication date: March 15, 2012
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: JWO-HUEI JOU, WEI-BEN WANG, MAO-FENG HSU, CHENG-CHUNG CHEN
  • Publication number: 20110304636
    Abstract: The present invention discloses a wallpaper image generation method and a portable electric device thereof. The portable electric device comprises an image capture module, an image analysis module, a data processing module and a display module. The image capture module is operable to capture a digital image. The image analysis module is operable to analyze the digital image to obtain a first color data. The data processing module is operable to execute an operating system and generate a wallpaper image for an operation interface of the operating system. The display module is operable to display the operation interface and the wallpaper image. In embodiment, the image analysis module randomly selects a pixel of which color is set as the first color data, and the data processing module generates the wallpaper image according to the first color data, other similar color and a predefined pattern.
    Type: Application
    Filed: June 14, 2010
    Publication date: December 15, 2011
    Applicant: ACER INCORPORATED
    Inventors: CHIEH-CHIH TSAI, YU-MAO FENG
  • Publication number: 20110307778
    Abstract: The present invention discloses a mobile electronic apparatus and a method of switching application programs thereof, the method is applied for the mobile electronic apparatus which has a screen, a storing unit and a processing unit, and the method comprises the following steps of: executing a plurality of application programs by the processing unit; capturing a plurality of frames displayed on the screen of the application programs then storing the frames in the storing unit; displaying the frames in a list on the screen with a sequence of the frames according to the starting time of each application program; executing the application program when the corresponding frame displayed in the list being selected by a user; wherein at least one of the application programs is closed before displaying the list on the screen.
    Type: Application
    Filed: June 10, 2010
    Publication date: December 15, 2011
    Applicant: ACER INCORPORATED
    Inventors: Chieh-Chih Tsai, Yu-Mao Feng
  • Publication number: 20110271181
    Abstract: The present invention discloses an electronic apparatus and a screen unlocking method thereof, the electronic apparatus comprises a touch-controlled screen and a control module, and the screen unlocking method comprises the steps of displaying a first frame having a movable icon which shows a part of a second frame over the second frame on the touch-controlled screen; touching the icon and dragging the icon with a random direction and a random dragging path, and the part of the second frame shown by the icon being enlarged or reduced according to the direction and the dragging path; determining if a dragging-condition of the icon is matched with any one of the unlocking-conditions; and displaying the whole second frame when the dragging-condition of the dragged icon is matched with one of the unlocking-conditions.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Applicant: ACER INCORPORATED
    Inventors: CHIEH-CHIH TSAI, YU-MAO FENG, PO-YUAN HUANG