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).
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Publication number: 20220053638Abstract: 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: ApplicationFiled: July 9, 2021Publication date: February 17, 2022Applicant: Au Optronics CorporationInventors: Chun-Yueh Hou, Hao-An Chuang, Fan-Yu Chen, Hsi-Hung Chen, Yun Cheng, Wen-Chang Hsieh, Chih-Wen Lu
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Patent number: 11196397Abstract: 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: GrantFiled: December 31, 2019Date of Patent: December 7, 2021Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Wen Lu, Chieh-An Lin, Yen-Ru Kuo, Jhih-Siou Cheng, Ju-Lin Huang
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Publication number: 20210286209Abstract: 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: ApplicationFiled: October 8, 2020Publication date: September 16, 2021Inventors: Chih-Wen LU, Yun-Ru CHENG, Kuan-Yi LEE
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Patent number: 11067608Abstract: 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: GrantFiled: June 14, 2019Date of Patent: July 20, 2021Assignee: Novatek Microelectronics Corp.Inventors: Chih-Wen Lu, Chih-Hao Lin, Jhih-Siou Cheng, Chieh-An Lin
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Publication number: 20210203291Abstract: 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: ApplicationFiled: December 31, 2019Publication date: July 1, 2021Inventors: Chih-Wen Lu, Chieh-An Lin, Yen-Ru Kuo, Jhih-Siou Cheng, Ju-Lin Huang
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Publication number: 20200393498Abstract: 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: ApplicationFiled: June 14, 2019Publication date: December 17, 2020Applicant: Novatek Microelectronics Corp.Inventors: Chih-Wen Lu, Chih-Hao Lin, Jhih-Siou Cheng, Chieh-An Lin
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Patent number: 10673391Abstract: 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: GrantFiled: May 3, 2019Date of Patent: June 2, 2020Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
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Publication number: 20190260334Abstract: 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: ApplicationFiled: May 3, 2019Publication date: August 22, 2019Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
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Patent number: 10326411Abstract: 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: GrantFiled: November 3, 2017Date of Patent: June 18, 2019Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
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Patent number: 10224886Abstract: 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: GrantFiled: September 27, 2017Date of Patent: March 5, 2019Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Wen Lu, Po-Yu Tseng, Jhih-Siou Cheng, Shang-I Liu, Chih-Hsien Chou
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Publication number: 20180337642Abstract: 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: ApplicationFiled: November 3, 2017Publication date: November 22, 2018Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
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Publication number: 20180337646Abstract: 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: ApplicationFiled: September 27, 2017Publication date: November 22, 2018Inventors: Chih-Wen Lu, Po-Yu Tseng, Jhih-Siou Cheng, Shang-I Liu, Chih-Hsien Chou
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Publication number: 20140043282Abstract: 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: ApplicationFiled: December 10, 2012Publication date: February 13, 2014Applicant: WinPower Optronics CorporationInventors: Yao-Hung Lai, Chih-Hsiung Chen, Chih-Wen Lu, Hsuan-Lun Kuo
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Publication number: 20120089756Abstract: 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: ApplicationFiled: February 7, 2011Publication date: April 12, 2012Inventors: Chih-Wen Lu, Chao-Yin Liu, Hua-Shih Liao
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Publication number: 20090115715Abstract: 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: ApplicationFiled: November 7, 2007Publication date: May 7, 2009Inventors: Peter H. Xiao, Chih-Wen Lu
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Patent number: 7411452Abstract: 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: GrantFiled: November 13, 2006Date of Patent: August 12, 2008Assignee: New Vision Micro Inc.Inventors: Chih-Wen Lu, Peter H. Xiao
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Publication number: 20070126506Abstract: 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: ApplicationFiled: November 13, 2006Publication date: June 7, 2007Inventors: Chih-Wen Lu, Peter Xiao
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Patent number: 6245233Abstract: 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: GrantFiled: November 26, 1997Date of Patent: June 12, 2001Inventor: Chih Wen Lu
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Patent number: D404799Type: GrantFiled: December 29, 1997Date of Patent: January 26, 1999Inventor: Chih Wen Lu