Patents by Inventor Dar-Ming Chiang
Dar-Ming Chiang 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: 9456283Abstract: An electrostatic electroacoustic transducer includes a first structure, a second structure and a third electrode. The third electrode is located between the first structure and the second structure. The first structure includes a first driving element, a first spacer and a first diaphragm, and the second structure includes a second driving element, a second spacer and a second diaphragm. By providing an alternating voltage source, a transformer and a bias voltage, the electrostatic electroacoustic transducer with a dual-diaphragm structure has a high efficiency and an enlarged range of audio frequency.Type: GrantFiled: November 20, 2013Date of Patent: September 27, 2016Assignee: 3-O LAB CO. LTD.Inventors: Dar-Ming Chiang, Jen-Luan Chen, E-Hung Lu
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Publication number: 20150071468Abstract: An electrostatic electroacoustic transducer includes a first structure, a second structure and a third electrode. The third electrode is located between the first structure and the second structure. The first structure includes a first driving element, a first spacer and a first diaphragm, and the second structure includes a second driving element, a second spacer and a second diaphragm. By providing an alternating voltage source, a transformer and a bias voltage, the electrostatic electroacoustic transducer with a dual diaphragm structure has a high efficiency and an enlarged range of audio frequency.Type: ApplicationFiled: November 20, 2013Publication date: March 12, 2015Applicant: 3-O Lab Co. Ltd.Inventors: Dar-Ming CHIANG, Jen-Luan CHEN, E-Hung LU
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Publication number: 20140013581Abstract: An electrostatic speaker and a method for manufacturing the speaker are disclosed. Said speaker comprises a vibrating film; an electrode portion disposed on a surface of the vibrating film and joined with the vibrating film; and a conductive backplate spaced from the electrode portion by a distance, the conductive backplate forming a plurality of holes, the vibrating film being deformed and vibrated to generate and release a sound through the holes due to a variation of an electric field generated between the conductive backplate and the electrode portion, wherein the conductive backplate is covered by a polymer layer serving as a protective film. The covering polymer layer on the conductive backplate is capable of improving the stability of the electrostatic speaker and increasing its lifespan.Type: ApplicationFiled: September 19, 2013Publication date: January 16, 2014Applicant: Taiwan Electrets Electronics Co., Ltd.Inventors: Dar-Ming CHIANG, Jen-Luan CHEN, I-Hui LIN
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Patent number: 8615099Abstract: A transparent speaker is suitable for being disposed on a display panel. The transparent speaker includes a transparent membrane, a transparent electrode plate, and spacers. Each transparent electrode plate has a plurality of openings. The display panel includes a plurality of pixels. The pixels emit optical signals. A Moire spatial period of the optical signals is less than 600 ?m after the optical signals pass through the transparent speaker. When the transparent speaker is disposed on the display panel, a user is able to watch an image on the display panel through the transparent speaker without being interfered by a Moire.Type: GrantFiled: July 8, 2010Date of Patent: December 24, 2013Assignee: Industrial Technology Research InstituteInventors: You-Chia Chang, Jyi-Tyan Yeh, Chun-Ti Chen, Shur-Fen Liu, Jyh-Long Jeng, Dar-Ming Chiang
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Patent number: 8600083Abstract: An electrostatic speaker and a method for manufacturing the speaker are disclosed. Said speaker comprises a vibrating film; an electrode portion disposed on a surface of the vibrating film and joined with the vibrating film; and a conductive backplate spaced from the electrode portion by a distance, the conductive backplate forming a plurality of holes, the vibrating film being deformed and vibrated to generate and release a sound through the holes due to a variation of an electric field generated between the conductive backplate and the electrode portion, wherein the conductive backplate is covered by a polymer layer serving as a protective film. The covering polymer layer on the conductive backplate is capable of improving the stability of the electrostatic speaker and increasing its lifespan.Type: GrantFiled: December 3, 2010Date of Patent: December 3, 2013Assignee: Taiwan Electrets Electronics Co., Ltd.Inventors: Dar-ming Chiang, Jen-luan Chen, I-hui Lin
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Patent number: 8559660Abstract: An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a second electrode configured to receive the audio signal, a first electret between the first electrode and the second electrode, the first electret including at least one dielectric layer containing electrostatic charges, a second electret between the first electrode and the second electrode, the second electret including at least one dielectric layer containing electrostatic charges, and a conductive layer sandwiched between the first electret and the second electret, the conductive layer, the first electret and the second electret being capable of vibratory motion relative to the first electrode and the second electrode based on the audio signal.Type: GrantFiled: July 12, 2007Date of Patent: October 15, 2013Assignee: Industrial Technology Research InstituteInventors: Dar-Ming Chiang, Yan-Ren Chen, Long-Cheng Cheng, I-Chen Lee
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Patent number: 8385570Abstract: The present invention provides an electret transducer with solar power. The provided electrets transducer includes a solar power supply device, an amplifier circuit having a first input terminal coupled to the solar power supply device and a second input terminal coupled to an audio signal input terminal, and an electret loudspeaker coupled to an output terminal of the amplifier circuit. The amplifier circuit receives a first voltage level via the first input terminal and boosts the first voltage level to a second voltage level, and receives a first audio signal via the second input terminal and amplifies the first audio signal to a second audio signal. The electret loudspeaker coupled to the output terminal of the amplifier circuit receives the second audio signal and outputs a sound corresponding to the second audio signal.Type: GrantFiled: July 19, 2012Date of Patent: February 26, 2013Assignee: Taiwan Electrets Electronics Co., Inc.Inventors: Dar-Ming Chiang, Shen-Long Liang, Shu-Ru Lin
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Publication number: 20120281862Abstract: The present invention provides an electret transducer with solar power. The provided electrets transducer includes a solar power supply device, an amplifier circuit having a first input terminal coupled to the solar power supply device and a second input terminal coupled to an audio signal input terminal, and an electret loudspeaker coupled to an output terminal of the amplifier circuit. The amplifier circuit receives a first voltage level via the first input terminal and boosts the first voltage level to a second voltage level, and receives a first audio signal via the second input terminal and amplifies the first audio signal to a second audio signal. The electret loudspeaker coupled to the output terminal of the amplifier circuit receives the second audio signal and outputs a sound corresponding to the second audio signal.Type: ApplicationFiled: July 19, 2012Publication date: November 8, 2012Applicant: TAIWAN ELECTRETS ELECTRONICS CO., INC.Inventors: Dar-Ming Chiang, Shen-Long Liang, Shu-Ru Lin
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Patent number: 8300860Abstract: The present invention provides an electret transducer with solar power. The provided electrets transducer includes a solar power supply device, an amplifier circuit having a first input terminal coupled to the solar power supply device and a second input terminal coupled to an audio signal input terminal, and an electret loudspeaker coupled to an output terminal of the amplifier circuit. The amplifier circuit receives a first voltage level via the first input terminal and boosts the first voltage level to a second voltage level, and receives a first audio signal via the second input terminal and amplifies the first audio signal to a second audio signal. The electret loudspeaker coupled to the output terminal of the amplifier circuit receives the second audio signal and outputs a sound corresponding to the second audio signal.Type: GrantFiled: June 4, 2010Date of Patent: October 30, 2012Assignee: Taiwan Electrets Electronics Co., Inc.Inventors: Dar-Ming Chiang, Shen-Long Liang, Shu-Ru Lin
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Patent number: 8259090Abstract: Disclosed is a 3-dimension non-bias electrets multi-touch device, comprising a first electrets thin film providing a first bias electric charge to form an electrostatic field, a first electrode, a second electrode and a controller. The first electrode is attached to the first electrets thin film and outputs a first signal when the electrostatic field is changed by a deformation of the first electrets thin film due to contact pressures of external forces. The second electrode outputs a second signal when the electrostatic field is changed. The first and second electrodes transmit the first and second signals to the controller. The controller is capable to detect and analyze positions where the contact pressures of the external forces are applied and normal vector shifts of the first electrets thin film at the positions.Type: GrantFiled: September 2, 2009Date of Patent: September 4, 2012Assignee: Taiwan Electrets Electronics Co., Ltd.Inventors: Dar-ming Chiang, Jen-luan Chen, Shu-ru Lin, Yan-ren Chen
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Publication number: 20120117839Abstract: A picture-exhibiting device with an audio system which can be used to demonstrate paintings or photos. The picture-exhibiting device with an audio system includes a frame, a picture fixed on the frame, an electret speaker positioned on the backside of the picture, a fixer disposed at a back side of the picture, a back frame fixed on the frame, a cover covering part of the back frame and the electret speaker, a post amplifier coupling the electret speaker, and an audio signal provider coupling the post amplifier.Type: ApplicationFiled: March 16, 2011Publication date: May 17, 2012Applicant: TAIWAN ELECTRETS ELECTRONICS CO., LTD.Inventors: Dar-Ming Chiang, Shu-Ru Lin, Shen-Lung Liang, Tzu-Ju Lu
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Patent number: 8144911Abstract: A garment with a speaker function is provided. The garment includes a garment body, a bag, and an electret speaker. The bag disposed on the garment body includes a sound-absorbing layer. The electret speaker, disposed in the bag, gives off sounds to a first direction and a second direction at the same time. The sound-absorbing layer absorbs the sound of the second direction. Therefore, the present invention not only provides convenience to the user, but also enhances the acoustic quality of the electret speaker.Type: GrantFiled: April 3, 2008Date of Patent: March 27, 2012Assignee: Industrial Technology Research InstituteInventors: Dar-Ming Chiang, Jen-Yuh Jiang
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Publication number: 20120014543Abstract: An electrostatic speaker and a method for manufacturing the speaker are disclosed. Said speaker comprises a vibrating film; an electrode portion disposed on a surface of the vibrating film and joined with the vibrating film; and a conductive backplate spaced from the electrode portion by a distance, the conductive backplate forming a plurality of holes, the vibrating film being deformed and vibrated to generate and release a sound through the holes due to a variation of an electric field generated between the conductive backplate and the electrode portion, wherein the conductive backplate is covered by a polymer layer serving as a protective film. The covering polymer layer on the conductive backplate is capable of improving the stability of the electrostatic speaker and increasing its lifespan.Type: ApplicationFiled: December 3, 2010Publication date: January 19, 2012Applicant: Taiwan Electrets Electronics Co., LTD.Inventors: Dar-ming Chiang, Jen-luan Chen, I-hui Lin
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Patent number: 8081784Abstract: An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a first conductive film configured to receive the audio signal, a first electret between the first electrode and the first conductive film, the first electret being capable of vibratory motion relative to the first electrode based on the audio signal, a second electrode configured to receive the audio signal, a second conductive film configured to receive the audio signal, the second conductive film being electrically isolated from the first conductive film, and a second electret between the second electrode and the second conductive film, the second electret being capable of vibratory motion relative to the second electrode based on the audio signal.Type: GrantFiled: September 4, 2007Date of Patent: December 20, 2011Assignee: Industrial Technology Research InstituteInventors: Chang-Ho Liou, Ming-Daw Chen, Dar-Ming Chiang
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Publication number: 20110216923Abstract: A flexible speaker structure, includes, a first electret film having a first surface, a second electret film having a second surface, a conductive film positioned between the first electret and the second electret, a first spacer disposed on the first surface for supporting a first electrode, and a second spacer disposed on the second surface for supporting a second electrode. A first interior angle is defined by the first electret and the first spacer, and the first interior angle is between 60 to 80 degrees.Type: ApplicationFiled: June 3, 2010Publication date: September 8, 2011Inventors: Dar-Ming Chiang, Shu-Ru Lin, Yan-Ren Chen, Tsung-Hung Wu, Shen-Long Liang
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Publication number: 20110191941Abstract: A hat having a crown and a brim is provided. A flexible speaker is disposed in or on the brim. The flexible speaker includes a first flexible electrode and a second flexible electrode used for receiving an audio signal. A first electret and a second electret are disposed between the first and the second flexible electrode. A conductive layer is disposed between the first electret and the second electret. After the audio signal is input into the first flexible electrode and the second flexible electrode, the first electret, the second electret and the conductive layer are driven to vibrate.Type: ApplicationFiled: February 11, 2010Publication date: August 11, 2011Inventors: Dar-Ming Chiang, Shu-Ru Lin, Yan-Ren Chen, Shen-Long Liang, I-Chen Lee
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Publication number: 20110033074Abstract: A transparent speaker is suitable for being disposed on a display panel. The transparent speaker includes a transparent membrane, a transparent electrode plate, and spacers. Each transparent electrode plate has a plurality of openings. The display panel includes a plurality of pixels. The pixels emit optical signals. A Moire spatial period of the optical signals is less than 600 ?m after the optical signals pass through the transparent speaker. When the transparent speaker is disposed on the display panel, a user is able to watch an image on the display panel through the transparent speaker without being interfered by a Moire.Type: ApplicationFiled: July 8, 2010Publication date: February 10, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: You Chia Chang, Jyi Tyan Yeh, Chun Ti Chen, Shur Fen Liu, Jyh Long Jeng, Dar Ming Chiang
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Patent number: 7879446Abstract: The present invention provides a fluorinated cyclic olefin electret film including a fluorinated cyclic olefin polymer film characterized by having a cyclic olefin polymer grafted with a fluorocarbon alkyl group, and a parylene film over the fluorinated cyclic olefin polymer film.Type: GrantFiled: July 12, 2007Date of Patent: February 1, 2011Assignee: Industrial Technology Research InstituteInventors: Jonq-Min Liu, Dar-Ming Chiang, Jen-Luan Chen, Mei-Rurng Tseng
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Publication number: 20100310098Abstract: The present invention provides an electret transducer with solar power. The provided electrets transducer includes a solar power supply device, an amplifier circuit having a first input terminal coupled to the solar power supply device and a second input terminal coupled to an audio signal input terminal, and an electret loudspeaker coupled to an output terminal of the amplifier circuit. The amplifier circuit receives a first voltage level via the first input terminal and boosts the first voltage level to a second voltage level, and receives a first audio signal via the second input terminal and amplifies the first audio signal to a second audio signal. The electret loudspeaker coupled to the output terminal of the amplifier circuit receives the second audio signal and outputs a sound corresponding to the second audio signal.Type: ApplicationFiled: June 4, 2010Publication date: December 9, 2010Applicant: TAIWAN ELECTRETS ELECTRONICS CO., LTD.Inventors: Dar-Ming Chiang, Shen-Long Liang, Shu-Ru Lin
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Publication number: 20100309145Abstract: Disclosed is a 3-dimension non-bias electrets multi-touch device, comprising a first electrets thin film providing a first bias electric charge to form an electrostatic field, a first electrode, a second electrode and a controller. The first electrode is attached to the first electrets thin film and outputs a first signal when the electrostatic field is changed by a deformation of the first electrets thin film due to contact pressures of external forces. The second electrode outputs a second signal when the electrostatic field is changed. The first and second electrodes transmit the first and second signals to the controller. The controller is capable to detect and analyze positions where the contact pressures of the external forces are applied and normal vector shifts of the first electrets thin film at the positions.Type: ApplicationFiled: September 2, 2009Publication date: December 9, 2010Applicant: TAIWAN ELECTRETS ELECTRONICS CO., LTD.Inventors: DAR-MING CHIANG, Jen-luan Chen, Shu-ru Lin, Yan-ren Chen