Patents by Inventor Chun-Fu Liu
Chun-Fu Liu 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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Patent number: 12125435Abstract: The present disclosure provides a pixel circuit with pulse width compensation, and the pixel circuit includes a pulse width modulation circuit and a pulse amplitude modulation circuit, and the pulse amplitude modulation circuit is electrically connected to the pulse width modulation circuit. The pulse width modulation circuit includes a P-type pulse width compensation transistor and a first P-type control transistor, and the first P-type control transistor is electrically connected to the P-type pulse width compensation transistor. The pulse amplitude modulation circuit includes a second P-type control transistor, a first capacitor, a P-type driving transistor and a light-emitting element. The second P-type control transistor is electrically connected to the first P-type control transistor. The first capacitor is electrically connected to the second P-type control transistor.Type: GrantFiled: December 8, 2022Date of Patent: October 22, 2024Assignees: Interface Technology (ChengDu) Co., Ltd., Interface Optoelectronics (ShenZhen) Co., Ltd., General Interface Solution LimitedInventors: De-Fu Chen, Po Lun Chen, Chun-Ta Chen, Ta-Jen Huang, Po-Tsun Liu, Guang-Ting Zheng, Ting-Yi Yi
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Patent number: 10276679Abstract: A semiconductor device including a substrate, a first doped region, a second doped region, a gate, and a gate dielectric layer is provided. The substrate has a first conductive type. The first doped region is formed in the substrate and has a second conductive type. The second doped region is formed in the substrate and has the second conductive type. The gate is formed on the substrate and is disposed between the first and second doped regions. The gate dielectric layer is formed on the substrate and is disposed between the gate and the substrate. The gate dielectric layer includes a first region and a second region. The depth of the first region is different from the depth of the second region.Type: GrantFiled: May 30, 2017Date of Patent: April 30, 2019Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATIONInventors: Chien-Wei Chiu, Hsing-Chao Liu, Chun-Fu Liu, Ying-Kai Chou
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Patent number: 10163407Abstract: A scanning method of a display of the present invention changes a driving order of a plurality of gate driver lines according to a image data so as to reduce switching currents generated while a plurality of voltages on a plurality of source driver lines are changed. Thereby, the goal of saving power can be reached.Type: GrantFiled: February 6, 2018Date of Patent: December 25, 2018Assignee: FITIPOWER INTEGRATED TECHNOLOGY INC.Inventors: Kuei-Kai Chang, Chun-Fu Liu, Li-Shen Chang, Lu-Yao Wu
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Publication number: 20180350931Abstract: A semiconductor device including a substrate, a first doped region, a second doped region, a gate, and a gate dielectric layer is provided. The substrate has a first conductive type. The first doped region is formed in the substrate and has a second conductive type. The second doped region is formed in the substrate and has the second conductive type. The gate is formed on the substrate and is disposed between the first and second doped regions. The gate dielectric layer is formed on the substrate and is disposed between the gate and the substrate. The gate dielectric layer includes a first region and a second region. The depth of the first region is different from the depth of the second region.Type: ApplicationFiled: May 30, 2017Publication date: December 6, 2018Applicant: Vanguard International Semiconductor CorporationInventors: Chien-Wei CHIU, Hsing-Chao LIU, Chun-Fu LIU, Ying-Kai CHOU
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Publication number: 20180166022Abstract: A scanning method of a display of the present invention changes a driving order of a plurality of gate driver lines according to a image data so as to reduce switching currents generated while a plurality of voltages on a plurality of source driver lines are changed. Thereby, the goal of saving power can be reached.Type: ApplicationFiled: February 6, 2018Publication date: June 14, 2018Inventors: Kuei-Kai CHANG, Chun-Fu LIU, Li-Shen CHANG, Lu-Yao WU
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Patent number: 9959817Abstract: A scanning method of a display of the present invention changes a driving order of a plurality of gate driver lines according to a frame data so as to reduce switching currents generated while a plurality of voltages on a plurality of source driver lines are changed. Thereby, the goal of saving power can be reached.Type: GrantFiled: April 14, 2016Date of Patent: May 1, 2018Assignee: Fitipower Integrated Technology Inc.Inventors: Kuei-Kai Chang, Chun-Fu Liu, Li-Shen Chang, Lu-Yao Wu
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Publication number: 20160307495Abstract: A scanning method of a display changes a driving order of a plurality of gate driver lines so as to reduce switching currents generated while a plurality of voltages on a plurality of source driver lines are changed. Thereby, the goal of saving power can be reached.Type: ApplicationFiled: April 14, 2016Publication date: October 20, 2016Inventors: Kuei-Kai CHANG, Chun-Fu LIU, Li-Shen CHANG, Lu-Yao WU
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Patent number: 8884938Abstract: A data driving apparatus includes two data driving circuits, each including a timing controller with a clock generator and configured to receive a specific portion of data corresponding to a row of pixel in an image frame, and, after receiving the specific portion of the data, process the portion of the data; wherein the two timing controllers have different data operation times. One timing controller outputs an enable command to another one once the processing of the respective portion of the data is complete. Then, another timing controller starts to process the respective portion of the data and output an output command to the first data driving circuit in response to a finish of the processing of the second portion of the data and thereby controlling the two data driving circuits to output the processed data. An operation method thereof and a display using the same are also provided.Type: GrantFiled: October 31, 2012Date of Patent: November 11, 2014Assignee: AU Optronics Corp.Inventors: Chih-Che Hsu, Chun-Fu Liu, Shung-Ting Tsai
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Patent number: 8284242Abstract: An integrated electrochromic 2D/3D display device including a first substrate; a parallax barrier unit disposed under the first substrate; a color filter unit disposed under the parallax barrier unit; a common electrode disposed under the color filter unit; a liquid crystal unit disposed under the common electrode; a plurality of thin film transistors disposed under the liquid crystal unit; a second substrate disposed under the plurality of thin film transistors; and a light emitting unit disposed under the second substrate is provided. Another integrated electrochromic 2D/3D display device including a substrate; a parallax barrier unit disposed under the substrate; and a display unit disposed under the parallax barrier unit is also provided. An adjustment of a planar image and a stereo image is performed to reduce a thickness and an assembling cost of conventional display devices.Type: GrantFiled: August 18, 2009Date of Patent: October 9, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Yin Wang, Chun-Fu Liu
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Patent number: 8228375Abstract: A stereoscopic display device has a plurality of sub-pixel units respectively arranged along a first axis and a second axis. Each sub-pixel unit and the adjacent sub-pixel unit along the first axis have a predetermined dislocation in the second axis. Each of the sub-pixel unit includes a first sub-pixel row having a first sub-pixel and two second sub-pixels arranged along the first axis, a second sub-pixel row under the first sub-pixel row having a first sub-pixel and two second sub-pixels arranged along the first axis, and a three sub-pixel row under the second sub-pixel row having three third sub-pixels arranged along the first axis. The stereoscopic display device also has a parallax panel having a plurality of transparent regions and shielding regions alternately parallel to each other.Type: GrantFiled: April 20, 2009Date of Patent: July 24, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Chun-Fu Liu
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Patent number: 8115985Abstract: A 2D/3D display device is provided. The 2D/3D display device includes a flat display device and a parallax barrier panel disposed on a display surface of the flat display device. The parallax barrier panel has a barrier pattern which includes a first electrochromic material layer and a second electrochromic material layer. In a 2D display mode, the barrier pattern, the first electrochromic material layer, and the second electrochromic material layer are transparent. In a 3D stereoscopic display mode, the barrier pattern is non-transmissible. The first electrochromic material layer has a first color, and the second electrochromic material layer has a second color.Type: GrantFiled: July 21, 2009Date of Patent: February 14, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Chun-Fu Liu
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Patent number: 8063583Abstract: The present invention provides a dimming circuit for controlling the luminance of a light source and the method for controlling luminance. The dimming circuit comprises an inverter circuit and a driving circuit. The inverter circuit is electrically coupled to a light source to be controlled, to convert a direct current (DC) power input into an alternating current (AC) power. The inverter circuit comprises a transformer, a capacitor connected in parallel to the transformer, a plurality of switches located at both ends of the capacitor, and an oscillating circuit electrically connected to both ends of the transformer. The driving circuit is electrically connected to the inverter circuit, for regulating the AC voltage to control the time period that the light source is turned on.Type: GrantFiled: March 9, 2009Date of Patent: November 22, 2011Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Chun-Fu Liu
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Publication number: 20100283924Abstract: A stereoscopic display device includes a stereoscopic display unit, a backlight module and an outer frame. The stereoscopic display unit includes an LCD panel and a parallax barrier opposite to each other. The backlight module is disposed on a side of the stereoscopic display unit and includes a light source and a rubber frame, wherein the rubber frame is disposed on an outer side of the light source. The outer frame encompasses the stereoscopic display unit and the backlight module. At least one of the rubber frame and the outer frame includes a light shielding component disposed on a side facing the light source to prevent light leakage form an edge of the stereoscopic display unit.Type: ApplicationFiled: September 29, 2009Publication date: November 11, 2010Inventors: Ming-Shu Lee, Chun-Fu Liu
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Publication number: 20100271685Abstract: A 2D/3D display device is provided. The 2D/3D display device includes a flat display device and a parallax barrier panel disposed on a display surface of the flat display device. The parallax barrier panel has a barrier pattern which includes a first electrochromic material layer and a second electrochromic material layer. In a 2D display mode, the barrier pattern, the first electrochromic material layer, and the second electrochromic material layer are transparent. In a 3D stereoscopic display mode, the barrier pattern is non-transmissible. The first electrochromic material layer has a first color, and the second electrochromic material layer has a second color.Type: ApplicationFiled: July 21, 2009Publication date: October 28, 2010Inventor: Chun-Fu Liu
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Publication number: 20100253767Abstract: An integrated electrochromic 2D/3D display device including a first substrate; a parallax barrier unit disposed under the first substrate; a color filter unit disposed under the parallax barrier unit; a common electrode disposed under the color filter unit; a liquid crystal unit disposed under the common electrode; a plurality of thin film transistors disposed under the liquid crystal unit; a second substrate disposed under the plurality of thin film transistors; and a light emitting unit disposed under the second substrate is provided. Another integrated electrochromic 2D/3D display device including a substrate; a parallax barrier unit disposed under the substrate; and a display unit disposed under the parallax barrier unit is also provided. An adjustment of a planar image and a stereo image is performed to reduce a thickness and an assembling cost of conventional display devices.Type: ApplicationFiled: August 18, 2009Publication date: October 7, 2010Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Yin Wang, Chun-Fu Liu
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Publication number: 20100182408Abstract: A stereoscopic display device has a plurality of sub-pixel units respectively arranged along a first axis and a second axis. Each sub-pixel unit and the adjacent sub-pixel unit along the first axis have a predetermined dislocation in the second axis. Each of the sub-pixel unit includes a first sub-pixel row having a first sub-pixel and two second sub-pixels arranged along the first axis, a second sub-pixel row under the first sub-pixel row having a first sub-pixel and two second sub-pixels arranged along the first axis, and a three sub-pixel row under the second sub-pixel row having three third sub-pixels arranged along the first axis. The stereoscopic display device also has a parallax panel having a plurality of transparent regions and shielding regions alternately parallel to each other.Type: ApplicationFiled: April 20, 2009Publication date: July 22, 2010Inventor: Chun-Fu Liu
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Publication number: 20100090615Abstract: The present invention provides a dimming circuit for controlling the luminance of a light source and the method for controlling luminance. The dimming circuit comprises an inverter circuit and a driving circuit. The inverter circuit is electrically coupled to a light source to be controlled, to convert a direct current (DC) power input into an alternating current (AC) power. The inverter circuit comprises a transformer, a capacitor connected in parallel to the transformer, a plurality of switches located at both ends of the capacitor, and an oscillating circuit electrically connected to both ends of the transformer. The driving circuit is electrically connected to the inverter circuit, for regulating the AC voltage to control the time period that the light source is turned on.Type: ApplicationFiled: March 9, 2009Publication date: April 15, 2010Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventor: Chun-Fu Liu
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Publication number: 20060286372Abstract: A high heat-dissipating lubricant aluminum-based cover plate and production process thereof comprises a composite material, an aluminum foil layer and a lubricant layer, wherein said composite material is composed of a core material associated at its rear side with a cast film, said aluminum foil layer is associated by pressing under heat with said cast film of said composite material, and said lubricant layer is applied over the surface of said core material of said composite material and is one selected from nonyl phenol polyethylene glycol ether, polyethylene glycol (PEG), polyvinyl alcohol (PVA) and water soluble epoxy resin, or mixtures of equal ratio thereof; thereby, during drilling, a drilling point can be lubricated by said lubricant layer first and hence its piercing force can be buffered.Type: ApplicationFiled: June 21, 2005Publication date: December 21, 2006Inventors: Tai-Wein Chien, Chun-Fu Liu, Chun-Ching Liao