Patents by Inventor Chih Wen Lu

Chih Wen Lu 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).

  • Publication number: 20220053638
    Abstract: A panel device including a substrate, a conductor pad, a turning wire, and a circuit board is provided. The substrate has a first surface and a second surface connected to the first surface while a normal direction of the second surface is different from a normal direction of the first surface. The conductor pad is disposed on the first surface of the substrate. The turning wire is disposed on the substrate and extends from the first surface to the second surface. The turning wire includes a wiring layer in contact with the conductor pad and a wire covering layer covering the wiring layer. The circuit board is bonded to and electrically connected to the wire covering layer. A manufacturing method of a panel device is also provided herein.
    Type: Application
    Filed: July 9, 2021
    Publication date: February 17, 2022
    Applicant: Au Optronics Corporation
    Inventors: Chun-Yueh Hou, Hao-An Chuang, Fan-Yu Chen, Hsi-Hung Chen, Yun Cheng, Wen-Chang Hsieh, Chih-Wen Lu
  • Patent number: 11196397
    Abstract: The present invention includes a current integrator for an organic light-emitting diode (OLED) panel. The current integrator includes an operational amplifier, which includes an output stage. The output stage, coupled to an output terminal of the current integrator, includes a first output transistor, a second output transistor, a first stack transistor and a second stack transistor. The first stack transistor is coupled between the first output transistor and the output terminal. The second stack transistor is coupled between the second output transistor and the output terminal.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: December 7, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chih-Wen Lu, Chieh-An Lin, Yen-Ru Kuo, Jhih-Siou Cheng, Ju-Lin Huang
  • Publication number: 20210286209
    Abstract: A display device includes a substrate, multiple spacers, multiple conductive particles, and a colloid layer. The spacers are disposed on the substrate. Each spacer has a first end closer to the substrate and a second end farther from the substrate, in which a width of the spacer is tapered from the first end to the second end. The conductive particles are disposed between the spacers. The colloid layer is disposed on the conductive particles and the spacers. A mother board is also disclosed.
    Type: Application
    Filed: October 8, 2020
    Publication date: September 16, 2021
    Inventors: Chih-Wen LU, Yun-Ru CHENG, Kuan-Yi LEE
  • Patent number: 11067608
    Abstract: A current sensor including a voltage generation circuit and a voltage integration circuit is provided. The voltage generation circuit is configured to generate a first voltage according to a current to be sensed. The voltage integration circuit is coupled to the voltage generation circuit and configured to receive the first voltage and a second voltage to generate an output voltage. The voltage integration circuit includes a first amplifier, a second amplifier and a first capacitor. The first amplifier is configured to receive the first voltage and the second voltage to generate a third voltage. The second amplifier is coupled to the first amplifier and configured to receive the third voltage to generate the output voltage. The first capacitor is coupled between an output terminal of the voltage generation circuit and an output terminal of the first amplifier and configured to reduce a voltage difference between the first voltage and the second voltage.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: July 20, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Wen Lu, Chih-Hao Lin, Jhih-Siou Cheng, Chieh-An Lin
  • Publication number: 20210203291
    Abstract: The present invention includes a current integrator for an organic light-emitting diode (OLED) panel. The current integrator includes an operational amplifier, which includes an output stage. The output stage, coupled to an output terminal of the current integrator, includes a first output transistor, a second output transistor, a first stack transistor and a second stack transistor. The first stack transistor is coupled between the first output transistor and the output terminal. The second stack transistor is coupled between the second output transistor and the output terminal.
    Type: Application
    Filed: December 31, 2019
    Publication date: July 1, 2021
    Inventors: Chih-Wen Lu, Chieh-An Lin, Yen-Ru Kuo, Jhih-Siou Cheng, Ju-Lin Huang
  • Publication number: 20200393498
    Abstract: A current sensor including a voltage generation circuit and a voltage integration circuit is provided. The voltage generation circuit is configured to generate a first voltage according to a current to be sensed. The voltage integration circuit is coupled to the voltage generation circuit and configured to receive the first voltage and a second voltage to generate an output voltage. The voltage integration circuit includes a first amplifier, a second amplifier and a first capacitor. The first amplifier is configured to receive the first voltage and the second voltage to generate a third voltage. The second amplifier is coupled to the first amplifier and configured to receive the third voltage to generate the output voltage. The first capacitor is coupled between an output terminal of the voltage generation circuit and an output terminal of the first amplifier and configured to reduce a voltage difference between the first voltage and the second voltage.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 17, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chih-Wen Lu, Chih-Hao Lin, Jhih-Siou Cheng, Chieh-An Lin
  • Patent number: 10673391
    Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: June 2, 2020
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
  • Publication number: 20190260334
    Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
  • Patent number: 10326411
    Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: June 18, 2019
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
  • Patent number: 10224886
    Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes a first current source, a first transistor, a second transistor, a third transistor, and a fourth transistor. The control terminal of the first transistor receives a first input signal. The control terminal of the second transistor receives a second input signal. The third transistor has a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the second transistor. The fourth transistor has a first terminal coupled to the second terminal of the second transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the first transistor.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: March 5, 2019
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chih-Wen Lu, Po-Yu Tseng, Jhih-Siou Cheng, Shang-I Liu, Chih-Hsien Chou
  • Publication number: 20180337642
    Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.
    Type: Application
    Filed: November 3, 2017
    Publication date: November 22, 2018
    Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
  • Publication number: 20180337646
    Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes a first current source, a first transistor, a second transistor, a third transistor, and a fourth transistor. The control terminal of the first transistor receives a first input signal. The control terminal of the second transistor receives a second input signal. The third transistor has a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the second transistor. The fourth transistor has a first terminal coupled to the second terminal of the second transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the first transistor.
    Type: Application
    Filed: September 27, 2017
    Publication date: November 22, 2018
    Inventors: Chih-Wen Lu, Po-Yu Tseng, Jhih-Siou Cheng, Shang-I Liu, Chih-Hsien Chou
  • Publication number: 20140043282
    Abstract: A capacitive touch apparatus and a sensing method thereof are provided. The capacitive touch apparatus includes an electrostatic detection panel, and a sensing device. The sensing device is coupled to the electrostatic detection panel, and configured to sense a variation of electrostatic field on the electrostatic detection panel, and generate at least one touch sensing signal accordingly.
    Type: Application
    Filed: December 10, 2012
    Publication date: February 13, 2014
    Applicant: WinPower Optronics Corporation
    Inventors: Yao-Hung Lai, Chih-Hsiung Chen, Chih-Wen Lu, Hsuan-Lun Kuo
  • Publication number: 20120089756
    Abstract: When a NAS apparatus is directly connected to a network and an external apparatus simultaneously, the external apparatus is able to access the NAS apparatus, and the NAS apparatus concurrently communicates with the network for executing a specific function. A method of configuring the NAS apparatus includes: allocating a first storage unit in the NAS apparatus; and setting an attribute of the first storage unit such that the first storage unit is allowed to be read by the NAS apparatus or the external apparatus, and written by the NAS apparatus or the external apparatus.
    Type: Application
    Filed: February 7, 2011
    Publication date: April 12, 2012
    Inventors: Chih-Wen Lu, Chao-Yin Liu, Hua-Shih Liao
  • Publication number: 20090115715
    Abstract: A source driver eliminates the need for a level shifter and enables the use of a low voltage digital-to-analog converter by using an operational buffer that performs voltage amplification in addition to driving a TFT panel.
    Type: Application
    Filed: November 7, 2007
    Publication date: May 7, 2009
    Inventors: Peter H. Xiao, Chih-Wen Lu
  • Patent number: 7411452
    Abstract: A low DC power rail-to-rail buffer amplifier is suitable for liquid crystal display application. The buffer amplifier comprises: a dc bias stage, a pair of complementary differential amplifiers, a second stage amplifier, and output stage. The dc bias stage is used for the dc bias of the differential amplifiers and the second stage to obtain a rail-to-rail operation. This buffer amplifier can be operated in the power supply ranges of 5.5 V to the breakdown voltage. Simulated results show that the circuit draws only 5.3 ?A static current.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: August 12, 2008
    Assignee: New Vision Micro Inc.
    Inventors: Chih-Wen Lu, Peter H. Xiao
  • Publication number: 20070126506
    Abstract: A low DC power rail-to-rail buffer amplifier is suitable for liquid crystal display application. The buffer amplifier comprises: a dc bias stage, a pair of complementary differential amplifiers, a second stage amplifier, and output stage. The dc bias stage is used for the dc bias of the differential amplifiers and the second stage to obtain a rail-to-rail operation. This buffer amplifier can be operated in the power supply ranges of 5.5 V to the breakdown voltage. Simulated results show that the circuit draws only 5.3 ?A static current.
    Type: Application
    Filed: November 13, 2006
    Publication date: June 7, 2007
    Inventors: Chih-Wen Lu, Peter Xiao
  • Patent number: 6245233
    Abstract: A water filtering apparatus with water flow switch valve device includes a water container filled with filtering materials and a switch valve device. The switch valve device includes a valve seat, a split valve, a control rod, and a valve cover. The valve seat is provided with threaded holes for connection with water pipes. The split valve has an interior divided into two isolated and non-communicating chambers. The outer wall of the split valve enclosing the chambers is provided with spaced water holes. When the split valve is installed in the valve seat and the valve cover is assembled to the valve seat, the split valve may be used to control the direction of flow of water into the water container for purposes of filtering water or purging the water container.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: June 12, 2001
    Inventor: Chih Wen Lu
  • Patent number: D404799
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: January 26, 1999
    Inventor: Chih Wen Lu