Patents by Inventor Shang-Li Chen
Shang-Li Chen 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: 20240146721Abstract: A mechanism for building decentralized computer applications that execute on a distributed computing system. The present technology works within a web browser, client application, or other software and provides access to decentralized computer applications through the browser. The present technology is non-custodial, wherein a public-private key pair, which represents user identity, is created on a client machine and then directly encrypted by a third-party platform without relying on one centralized computing system.Type: ApplicationFiled: January 8, 2024Publication date: May 2, 2024Inventors: Fei-Yang Jen, Yi Wei Chen, Jaemin Jin, Hanyu Xue, Wentao Liu, Shang Li
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Patent number: 11968206Abstract: A mechanism for building decentralized computer applications that execute on a distributed computing system. The present technology works within a web browser, client application, or other software and provides access to decentralized computer applications through the browser. The present technology is non-custodial, wherein a public-private key pair, which represents user identity, is created on a client machine and then directly encrypted by a third-party platform without relying on one centralized computing system.Type: GrantFiled: September 15, 2023Date of Patent: April 23, 2024Assignee: Magic Labs, Inc.Inventors: Fei-Yang Jen, Yi Wei Chen, Jaemin Jin, Hanyu Xue, Wentao Liu, Shang Li
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Patent number: 7847763Abstract: A method for driving a passive matrix organic light emitting diode (PMOLED) is provided. A pulse width modulation (PWM) constant current is provided to OLED pixels connected to a segment of a PMOLED array without voltage pre-charging the segment. Then, an offset value corresponding to missing gray scales of the OLED pixel is determined. According to the missing gray scales, the gray scales of the OLED pixel are rescaled starting from the offset. The OLED pixel is thus driven by a compensated PWM constant current having the rescaled gray scales during each horizontal line period.Type: GrantFiled: June 9, 2005Date of Patent: December 7, 2010Assignee: Himax Technologies, Inc.Inventor: Shang-Li Chen
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Patent number: 7180492Abstract: A single-type thin-film transistor (TFT) is used for making a thin-film transistor liquid crystal display (TFT-LCD). The scan driving circuit of the liquid crystal display is made of P-type thin-film transistors or N-type thin-film transistors so as to decrease the steps required by the manufacture process and reduce the cost and the probability of error occurring.Type: GrantFiled: September 4, 2003Date of Patent: February 20, 2007Assignee: Industrial Technology Research InstituteInventors: Jun-Ren Shih, Ming-Daw Chen, Shang-Li Chen, Chun-Fu Chung
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Publication number: 20060279492Abstract: A method for driving a passive matrix organic light emitting diode (PMOLED) is provided. A pulse width modulation (PWM) constant current is provided to OLED pixels connected to a segment of a PMOLED array without voltage pre-charging the segment. Then, an offset value corresponding to missing gray scales of the OLED pixel is determined. According to the missing gray scales, the gray scales of the OLED pixel are rescaled starting from the offset. The OLED pixel is thus driven by a compensated PWM constant current having the rescaled gray scales during each horizontal line period.Type: ApplicationFiled: June 9, 2005Publication date: December 14, 2006Inventor: Shang-Li Chen
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Patent number: 7068251Abstract: A Pixel Circuit For Liquid Crystal Display Using Static Memory is disclosed, wherein a digital circuit is installed at a pixel of the liquid crystal display (LCD) for processing static image. The digital circuit works with an analog circuit for processing dynamic image. Several multiplexers and static memory are provided to enhance the digital and analog signal processing, for lowering the power consumption so as to accomplish power saving function of a Pixel Circuit For Liquid Crystal Display Using Static Memory.Type: GrantFiled: August 4, 2003Date of Patent: June 27, 2006Assignee: Industrial Technology Research InstituteInventors: Jan-Ruei Lin, Bowen Wang, Shang-Li Chen
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Patent number: 7061458Abstract: A pixel circuit for liquid crystal display is disclosed, wherein a digital circuit is installed at a pixel of the liquid crystal display (LCD) for processing static image. The digital circuit works with an analogue circuit for processing dynamic image. Several multiplexers are provided to enhance the digital and analogue signal processing, for lowering the power consumption so as to accomplish power saving function of a pixel circuit for liquid crystal display.Type: GrantFiled: August 4, 2003Date of Patent: June 13, 2006Assignee: Industrial Technology Research InstituteInventors: Jan-Ruei Lin, Bowen Wang, Shang-Li Chen
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Patent number: 7023408Abstract: A pixel circuit for active matrix OLED and driving method is proposed in this invention, which includes five transistors and one capacitance, it's mainly use a first-transistor connected to a control line to let a second transistor connected to the former scan line off when writing a low voltage in, so to avoid large current generation and IR-drop, finally the illumination will be more uniform than prior art.Type: GrantFiled: August 8, 2003Date of Patent: April 4, 2006Assignee: Industrial Technology Research InstituteInventors: Chien-Ru Chen, Shang-Li Chen, Jun-Ren Shih
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Patent number: 6937219Abstract: The main differences between the present invention the conventional pixel circuit for active matrix of current driving device is the usage of the auxiliary transistor(s). In the invention, at least one auxiliary transistor is used to separate both the transistor, which is directly electrically coupled to the current driving device, and the plate, which is not directly electrically coupled with a constant voltage source, of the capacitor from the other transistors of the pixel circuit. Hence, all circuit and voltage, which are induced by the switching process of these transistors, are blocked or compensate by the auxiliary transistor(s), and the stored voltage of the capacitor would be unaffected.Type: GrantFiled: March 28, 2002Date of Patent: August 30, 2005Assignee: Industrial Technology Research InstituteInventors: Chain-Ru Chen, Shang-Li Chen, Jun-Ren Shih
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Patent number: 6891520Abstract: A circuit for driving active matrix LED pixels, having a capacitor, a light emitting diode, and a first and second transistor. The capacitor is connected between a gate and source of the first transistor, and the second transistor has a source connected to a drain of the first transistor and a gate connected to receive a first voltage by which the first and second transistor operates in a saturation region, and a current switch controlled by a scan signal, wherein a first current corresponding to a data signal flows through the first and second transistor to generate a second voltage stored on the capacitor when the current switch is closed, and a second current through the first and second transistor is generated by the second voltage stored on the capacitor to turn on the light emitting diode when the current switch is opened.Type: GrantFiled: September 3, 2002Date of Patent: May 10, 2005Assignee: Industrial Technology Research InstituteInventors: Shang-Li Chen, Chien-Ru Chen, Jun-Ren Shih
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Publication number: 20040252094Abstract: The present invention relates to a scan driving circuit with single-type transistors. The single-type thin-film transistor (TFT) is used for making a thin-film transistor liquid crystal display (TFT-LCD). Namely, the scan driving circuit of the liquid crystal display is made of P-type thin-film transistors or N-type thin-film transistors so as to decrease the steps required by the manufacture process and reduce the cost and the probability of error occurring.Type: ApplicationFiled: September 4, 2003Publication date: December 16, 2004Applicant: Industrial Technology Research InstituteInventors: Jun-Ren Shih, Ming-Daw Chen, Shang-Li Chen, Chun-Fu Chung
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Patent number: 6829322Abstract: A shift-register unit. The first transistor includes a first source/drain coupled to a first terminal, a second source/drain, and a first gate coupled to a reset signal to stop the shift-register unit outputting a pulse signal. The second transistor includes a third source/drain coupled to the second source/drain, a fourth source/drain coupled to a second terminal, and a second gate coupled to a setting signal to initial the shift-register unit. The third transistor includes a fifth source/drain coupled to an output terminal, a third gate coupled to the second source/drain and a sixth source/drain coupled to a clock signal to start outputting the pulse signal. The fourth transistor includes a seventh source/drain coupled to the first terminal, an eighth source/drain coupled to the output terminal and a fourth gate coupled to a refresh signal to set a voltage level of the shift-register unit in a standby mode.Type: GrantFiled: July 14, 2003Date of Patent: December 7, 2004Assignee: Industrial Technology Research InstituteInventors: Jun-Ren Shih, Shang-Li Chen, Bo-Wen Wang, Jan-Ruei Lin
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Publication number: 20040218710Abstract: A shift-register unit. The first transistor includes a first source/drain coupled to a first terminal, a second source/drain, and a first gate coupled to a reset signal to stop the shift-register unit outputting a pulse signal. The second transistor includes a third source/drain coupled to the second source/drain, a fourth source/drain coupled to a second terminal, and a second gate coupled to a setting signal to initial the shift-register unit. The third transistor includes a fifth source/drain coupled to an output terminal, a third gate coupled to the second source/drain and a sixth source/drain coupled to a clock signal to start outputting the pulse signal. The fourth transistor includes a seventh source/drain coupled to the first terminal, an eighth source/drain coupled to the output terminal and a fourth gate coupled to a refresh signal to set a voltage level of the shift-register unit in a standby mode.Type: ApplicationFiled: July 14, 2003Publication date: November 4, 2004Inventors: Jun-Ren Shih, Shang-Li Chen, Bo-Wen Wang, Jan-Ruei Lin
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Publication number: 20040189578Abstract: A pixel circuit for liquid crystal display is disclosed, wherein a digital circuit is installed at a pixel of the liquid crystal display (LCD) for processing static image. The digital circuit works with an analogue circuit for processing dynamic image. Several multiplexers are provided to enhance the digital and analogue signal processing, for lowering the power consumption so as to accomplish power saving function of a pixel circuit for liquid crystal display.Type: ApplicationFiled: August 4, 2003Publication date: September 30, 2004Applicant: Industrial Technology Research InstituteInventors: Jan-Ruei Lin, Bowen Wang, Shang-Li Chen
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Publication number: 20040189577Abstract: A Pixel Circuit For Liquid Crystal Display Using Static Memory is disclosed, wherein a digital circuit is installed at a pixel of the liquid crystal display (LCD) for processing static image. The digital circuit works with an analogue circuit for processing dynamic image. Several multiplexers and static memory are provided to enhance the digital and analogue signal processing, for lowering the power consumption so as to accomplish power saving function of a Pixel Circuit For Liquid Crystal Display Using Static Memory.Type: ApplicationFiled: August 4, 2003Publication date: September 30, 2004Applicant: Industrial Technology Research InstituteInventors: Jan-Ruei Lin, Bowen Wang, Shang-Li Chen
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Publication number: 20040183758Abstract: A pixel circuit for active matrix OLED and driving method is proposed in this invention, which includes five transistors and one capacitance, it's mainly use a first-transistor connected to a control line to let a second transistor connected to the former scan line off when writing a low voltage in, so to avoid large current generation and IR-drop, finally the illumination will be more uniform than prior art.Type: ApplicationFiled: August 8, 2003Publication date: September 23, 2004Applicant: Industrial Technology Research InstituteInventors: Chien-Ru Chen, Shang-Li Chen, Jun-Ren Shih
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Publication number: 20040125422Abstract: A data driver of a display forming an image frame by sequentially scanning horizontal lines. The data driver comprises a shift register receiving image data of three primary colors in serial and outputting them in parallel within each scan duration, a sample and hold register acquiring the image data from the shift register, a gamma multiplexer outputting gamma reference voltages for the three primary colors in a predetermined sequence within each scan duration, three DACs receiving the image data of the three primary colors from the sample and hold register and the gamma reference voltages from the gamma multiplexer, and outputting calibrated image signals of the three primary colors, respectively, and three buffers receiving the calibrated image signals from the three digital-to-analog converters in the sequence of the primary colors.Type: ApplicationFiled: July 22, 2003Publication date: July 1, 2004Inventors: Bo-Wen Wang, Ming-Daw Chen, Shang-Li Chen
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Patent number: 6753655Abstract: A pixel structure for an active matrix OLED. A first switching transistor has a control terminal coupled to a first scan line, and a first terminal coupled to a data line. A first P-type transistor has a drain and a gate coupled to each other, and a source coupled to a voltage source. The drain is also coupled to a second terminal of the first switching transistor. A second P-type transistor has a source coupled to the voltage source, and a second switching transistor has two terminals coupled between gates of the first and second P-type transistors, and a control terminal coupled to a second scan line. A storage capacitor is coupled between the voltage source and the gate of the second P-type transistor. An OLED has an anode coupled to the drain of the second P-type transistor and a cathode coupled to ground.Type: GrantFiled: December 30, 2002Date of Patent: June 22, 2004Assignee: Industrial Technology Research InstituteInventors: Jun-Ren Shih, Shang-Li Chen, Chien-Ru Chen
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Publication number: 20040056604Abstract: A pixel structure for an active matrix OLED. A first switching transistor has a control terminal coupled to a first scan line, and a first terminal coupled to a data line. A first P-type transistor has a drain and a gate coupled to each other, and a source coupled to a voltage source. The drain is also coupled to a second terminal of the first switching transistor. A second P-type transistor has a source coupled to the voltage source, and a second switching transistor has two terminals coupled between gates of the first and second P-type transistors, and a control terminal coupled to a second scan line. A storage capacitor is coupled between the voltage source and the gate of the second P-type transistor. An OLED has an anode coupled to the drain of the second P-type transistor and a cathode coupled to ground.Type: ApplicationFiled: December 30, 2002Publication date: March 25, 2004Inventors: Jun-Ren Shih, Shang-Li Chen, Chien-Ru Chen
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Publication number: 20030184509Abstract: The main differences between the present invention the conventional pixel circuit for active matrix of current driving device is the usage of the auxiliary transistor(s). In the invention, at least one auxiliary transistor is used to separate both the transistor, which is directly electrically coupled to the current driving device, and the plate, which is not directly electrically coupled with a constant voltage source, of the capacitor from the other transistors of the pixel circuit. Hence, all circuit and voltage, which are induced by the switching process of these transistors, are blocked or compensate by the auxiliary transistor(s), and the stored voltage of the capacitor would be unaffected.Type: ApplicationFiled: March 28, 2002Publication date: October 2, 2003Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chain-Ru Chen, Shang-Li Chen, Jun-Ren Shih