Patents by Inventor Heng Cheng Chou
Heng Cheng Chou 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: 11947150Abstract: A backlit-module-embedded illuminated keyswitch structure includes a baseplate, a mask film disposed below the baseplate and having a first coating configured to substantially reflect a light, a light guide sheet disposed at one side of the mask film and having a light source hole, a reflective layer disposed at one side of the light guide sheet opposite to the mask film and having an opening communicating with the light source hole, a top glue configured to connect the mask film and the light guide sheet around the light source hole, and a bottom glue configured to connect the light guide sheet and the reflective layer around the light source hole. The first coating covers the light source hole. In a stacked direction of the mask film, the light guide sheet, and the reflective layer, at least one of the top glue and the bottom glue overlaps the first coating.Type: GrantFiled: March 30, 2023Date of Patent: April 2, 2024Assignee: DARFON ELECTRONICS CORP.Inventors: Heng-Yi Huang, Hsin-Cheng Ho, Po-Yueh Chou
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Publication number: 20080284551Abstract: Transformers are provided. A transformer comprises a ferromagnetic core unit; a bobbin coupled with the ferromagnetic core unit; at least a winding unit as a primary winding and at least a plate as a secondary winding. Also, some of the winding units can act as a secondary winding. At least a winding unit and at least a plate are alternatively stacked in a staggered manner. A conductive wire is wound around the winding unit.Type: ApplicationFiled: July 29, 2008Publication date: November 20, 2008Inventors: Yu-Chan Chen, Kai-Yuan Cheng, I-Chi Cheng, Hsin-Wei Tsai, Wen-Pin Feng, Heng-Cheng Chou, Kao-Tsai Liao, Yi-Fan Wu
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Patent number: 7439838Abstract: Transformers are provided. A transformer comprises a ferromagnetic core unit; a bobbin coupled with the ferromagnetic core unit; at least a winding unit as a primary winding and at least a plate as a secondary winding. Also, some of the winding units can act as a secondary winding. At least a winding unit and at least a plate are alternatively stacked in a staggered manner. A conductive wire is wound around the winding unit.Type: GrantFiled: August 23, 2006Date of Patent: October 21, 2008Assignee: Delta Electronics, Inc.Inventors: Yu-Chan Chen, Kai-Yuan Cheng, I-Chi Cheng, Hsin-Wei Tsai, Wen-Pin Feng, Heng-Cheng Chou, Kao-Tsai Liao, Yi-Fan Wu
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Patent number: 7414511Abstract: An electromagnetic interference (EMI) filter includes a first magnetomotive element, a first wire, a second wire, and a second magnetomotive element. The second magnetomotive element forms a closed magnetic loop, which comprises a first portion penetrating a through hole of the first magnetomotive element. Thus, the first wire and the second wire in the Filter filter not only differential mode noise but also common mode noise.Type: GrantFiled: October 12, 2005Date of Patent: August 19, 2008Assignee: Delta Electronics, Inc.Inventors: Chen-Feng Wu, Heng-Cheng Chou
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Patent number: 7193497Abstract: An ignition coil. The ignition coil includes a casing, a bobbin, and a core. The bobbin includes a body, a primary coil surrounding the body, a secondary coil surrounding the body, a plurality of first terminals embedded in the body, and two secondary coils embedded in the body. The bobbin is disposed inside the casing. The primary coil is connected to the second terminal, and the secondary coil is connected to the first terminal. Each first terminal is abutted by the body and the casing respectively so that each first terminal is maintained in a predetermined position on the body. The core is disposed inside the bobbin.Type: GrantFiled: January 15, 2004Date of Patent: March 20, 2007Assignee: Delta Electronics Inc.Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu, Chien-Chia Lin
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Publication number: 20070057757Abstract: Transformers are provided. A transformer comprises a ferromagnetic core unit; a bobbin coupled with the ferromagnetic core unit; at least a winding unit as a primary winding and at least a plate as a secondary winding. Also, some of the winding units can act as a secondary winding. At least a winding unit and at least a plate are alternatively stacked in a staggered manner. A conductive wire is wound around the winding unit.Type: ApplicationFiled: August 23, 2006Publication date: March 15, 2007Inventors: Yu-Chan Chen, Kai-Yuan Cheng, I-Chi Cheng, Hsin-Wei Tsai, Wen-Pin Feng, Heng-Cheng Chou, Kao-Tsai Liao, Yi-Fan Wu
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Publication number: 20060082948Abstract: An electromagnetic interference (EMI) filter includes a first magnetomotive element, a first wire, a second wire, and a second magnetomotive element. The second magnetomotive element forms a closed magnetic loop, which comprises a first portion penetrating a through hole of the first magnetomotive element. Thus, the first wire and the second wire in the Filter filter not only differential mode noise but also common mode noise.Type: ApplicationFiled: October 12, 2005Publication date: April 20, 2006Inventors: Chen-Feng Wu, Heng-Cheng Chou
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Patent number: 6788181Abstract: The present invention discloses a base for transforming an inductor consisting of a core and a coil having two terminals into a surface mounted device. The present invention includes an insulating element, a substantially Z-shaped first conductive element and a substantially Z-shaped second conductive element. The first conductive element and the second conductive element further include a strip of first stem and a strip of second stem, respectively. The insulating element partially exposes lower surfaces of the first and second conductive elements and the first and second stems. The remaining portions of the first and second conductive elements are embedded in the insulating element. A terminal of the first conductive element extends toward the second conductive element and crosses a virtual cross-sectional line. Each of the terminals of the coil is wound around the respective recessed edge of the stems.Type: GrantFiled: August 15, 2001Date of Patent: September 7, 2004Assignee: Delta Electronics Inc.Inventors: Ming Yeh, Heng Cheng Chou, Ying Teng Chang, Jen Chieh Huang
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Publication number: 20040145438Abstract: An ignition coil. The ignition coil includes a casing, a bobbin, and a core. The bobbin includes a body, a primary coil surrounding the body, a secondary coil surrounding the body, a plurality of first terminals embedded in the body, and two secondary coils embedded in the body. The bobbin is disposed inside the casing. The primary coil is connected to the second terminal, and the secondary coil is connected to the first terminal. Each first terminal is abutted by the body and the casing respectively so that each first terminal is maintained in a predetermined position on the body. The core is disposed inside the bobbin.Type: ApplicationFiled: January 15, 2004Publication date: July 29, 2004Applicant: Delta Electronics Inc.Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu, Chien-Chia Lin
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Patent number: 6734774Abstract: An ignition coil is provided. The ignition coil comprises a casing, a plurality of pins and a bobbin. The pins are disposed inside the casing. The bobbin, having a plurality of first terminals corresponding to the pins respectively, is disposed inside the casing. Each of the first terminals is provided with a ring-shaped portion in contact with the corresponding pin. Hence, resin, filled in the ignition coil, is prevented from leaking out of the casing.Type: GrantFiled: October 30, 2001Date of Patent: May 11, 2004Assignee: Delta Electronics Inc.Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu, Chien-Chia Lin
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Patent number: 6734777Abstract: A transformer with good insulation is disclosed. The transformer includes a bobbin, an insulating shell and a core structure. The bobbin is wound with a secondary winding. The insulating shell encloses the bobbin and the insulating shell is wound with a primary winding. Further, the core structure is magnetically coupled to the primary winding and the secondary winding.Type: GrantFiled: March 15, 2002Date of Patent: May 11, 2004Assignee: Delta Electronics Inc.Inventors: Ming Yeh, Heng-Cheng Chou, Chen-Feng Wu, Ren-Jye Huang
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Patent number: 6661323Abstract: A support is used to modify an inductive device to a surface mounting device. The inductive device is provided with a core and a coil, and the support includes an electric portion and an isolation portion. The electric portion, having a first surface and a second surface opposite to the first surface, is electrically coupled to the coil. The first surface of the electric portion is in contact with the core. The isolation portion is disposed on the second surface of the electric portion in a manner such that the isolation portion covers one part of the second surface of the electric portion. The isolation portion is flush with the other part of the second surface of the electric portion.Type: GrantFiled: April 3, 2002Date of Patent: December 9, 2003Assignee: Delta Electronics, Inc.Inventors: Ying Teng Chang, Ming Yeh, Heng Cheng Chou
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Patent number: 6661326Abstract: A wire-winding structure and method are applied to a transformer to improve transformer power. The wire-winding method includes the following steps. A bobbin which includes a plurality of pins and a plurality of slots on the external surface is provided. A wire is wound from a first pin and successively wound on the rest of the plurality of slots, but not on a slot adjacent to a predetermined connection portion between iron core structures of the transformer. The wire is soldered to a second pin and the bobbin with the winding wire is combined with the iron core structures to constitute the transformer.Type: GrantFiled: April 1, 2002Date of Patent: December 9, 2003Assignee: Delta Electronics, Inc.Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu
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Patent number: 6587026Abstract: An embedded transformer embedded in a board is disclosed. The embedded transformer includes a board, a first insulating sheet, a preformed coil, a second insulating sheet, a first core and a second core. Among these, the board includes a conductive pattern formed on an upper surface of the board. A part of said conductive pattern serves as a primary coil of the embedded transformer. The first insulating sheet is formed on the conductive pattern. The preformed coil is formed on the first insulating sheet. The second insulating sheet is formed on the preformed coil. The first core is formed on the second insulating sheet and partially embedded in the board. The second core formed on a lower surface of the board is partially embedded in the board so as to be couple to the first core.Type: GrantFiled: August 30, 2001Date of Patent: July 1, 2003Assignee: Delta Electronics Inc.Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu, Hui-Hua Teng, Chien-Chia Lin
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Patent number: 6518870Abstract: The transformer bobbin of the present invention includes a tubular body, a first partition wall, at least one second partition wall, at least one third partition wall and pins. The first partition wall is formed on the surface of the tubular body. The first partition wall includes a first flange having a thinner section for providing winding of a wire. The first partition wall separates a primary side from a secondary side. The second partition wall, parallel to the first partition wall, is formed on the surface of the tubular body. The second partition wall includes a second breach and a second flange having a second cut corner formed thereon. The third partition wall, interposed between the adjacent second partition walls, includes a third breach and a third flange having a third cut corner formed thereon. There is a horizontal height difference exists between the second cut corner and the third cut corner.Type: GrantFiled: September 26, 2001Date of Patent: February 11, 2003Assignee: Delta Electronics Inc.Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu, Jen Chieh Huang
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Patent number: 6515567Abstract: A bobbin for a transformer is provided. The bobbin comprises a body, a first partition wall, a second partition wall, at least one third partition wall, and two first pins. The first partition wall, having a first protrusion, is formed on the body. The body is divided into a primary side and a secondary side by the first partition wall. The second partition wall, having a second protrusion with a thinner section, is formed on the secondary side of the body. The third partition wall, having a third protrusion with a notch, is formed on the secondary side of the body so that the third partition wall is close to the second partition wall and away from the first partition wall. The first pins are disposed on the secondary side of the body in a substantially U-shape.Type: GrantFiled: December 3, 2001Date of Patent: February 4, 2003Assignee: Delta Electronics Inc.Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu, Chien-Chia Lin
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Publication number: 20020190829Abstract: A support is used to modify an inductive device to a surface mounting device. The inductive device is provided with a core and a coil, and the support includes an electric portion and an isolation portion. The electric portion, having a first surface and a second surface opposite to the first surface, is electrically coupled to the coil. The first surface of the electric portion is in contact with the core. The isolation portion is disposed on the second surface of the electric portion in a manner such that the isolation portion covers one part of the second surface of the electric portion. The isolation portion is flush with the other part of the second surface of the electric portion.Type: ApplicationFiled: April 3, 2002Publication date: December 19, 2002Inventors: Ying Teng Chang, Ming Yeh, Heng Cheng Chou
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Publication number: 20020145498Abstract: A wire-winding structure and method are applied to a transformer to improve transformer power. The wire-winding method includes the following steps. A bobbin which includes a plurality of pins and a plurality of slots on the external surface is provided. A wire is wound from a first pin and successively wound on the rest of the plurality of slots, but not on a slot adjacent to a predetermined connection portion between iron core structures of the transformer. The wire is soldered to a second pin and the bobbin with the winding wire is combined with the iron core structures to constitute the transformer.Type: ApplicationFiled: April 1, 2002Publication date: October 10, 2002Inventors: Ming Yeh, Heng Cheng Chou, Chen-Feng Wu
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Publication number: 20020145497Abstract: A transformer with good insulation is disclosed. The transformer includes a bobbin, an insulating shell and a core structure. The bobbin is wound with a secondary winding. The insulating shell encloses the bobbin and the insulating shell is wound with a primary winding. Further, the core structure is magnetically coupled to the primary winding and the secondary winding.Type: ApplicationFiled: March 15, 2002Publication date: October 10, 2002Inventors: Ming Yeh, Heng-Cheng Chou, Chen-Feng Wu, Ren-Jye Huang
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Publication number: 20020121955Abstract: The present invention provides a low profile transformer including a bobbin and core structure. The bobbin further includes a primary coil, a secondary coil and a plurality of pins formed thereon. The core structure is coupled to the bobbin. In addition, the core structure includes an I-core and two U-cores coupled to each other. Alternatively, the I-core includes at least one recessed edge and the U-cores include at least one protrusive edge. The U-cores are coupled to the I-core by means of the recessed edge and the protrusive edge.Type: ApplicationFiled: October 11, 2001Publication date: September 5, 2002Inventors: Ming Yeh, Heng Cheng Chou, Chien-Chia Lin