Patents by Inventor Chih-Chiang Chao
Chih-Chiang Chao 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: 9497547Abstract: A speaker structure includes a main body, a circuit board and a magnetic component. The main body has a receiving section and a recess formed on an outer circumference of the receiving section. A center of the main body is formed with a hole in communication with the receiving section. The circuit board has a board body and an outer frame body inlaid in the recess of the main body. The magnetic component is received in the hole. A voice coil collar is disposed around the magnetic component. Multiple windings are wound around a surface of the voice coil collar. Two ends of the windings are attached to the circuit board. According to the above arrangement, the volume of the speaker structure is greatly reduced and the manufacturing cost of the speaker structure is lowered.Type: GrantFiled: August 22, 2013Date of Patent: November 15, 2016Assignee: Asia Vital Components Co., Ltd.Inventors: Mao-Lin Chen, Chih-Chiang Chao
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Patent number: 9291169Abstract: A fan motor control device includes a zero-crossing detection unit, a phase control unit, an operation processing unit, a first rectifier element and a second rectifier element. The zero-crossing unit generates a synchronization reference signal to the phase control unit, which in turn generates a phase control signal to the operation processing unit. According to the received phase control unit, the operation processing unit generates a motor-starting processing signal to the first and the second rectifier element for driving a fan motor to rotate. Since the phase control unit provides the effect of controlling the fan motor's output power and rotational speed, it enables the fan to have increased rotational speed and provide improved heat dissipation and ventilation effects.Type: GrantFiled: December 11, 2013Date of Patent: March 22, 2016Assignee: Asia Vital Components Co., Ltd.Inventors: Mao-Lin Chen, Chih-Chiang Chao
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Publication number: 20150159663Abstract: A fan motor control device includes a zero-crossing detection unit, a phase control unit, an operation processing unit, a first rectifier element and a second rectifier element. The zero-crossing unit generates a synchronization reference signal to the phase control unit, which in turn generates a phase control signal to the operation processing unit. According to the received phase control unit, the operation processing unit generates a motor-starting processing signal to the first and the second rectifier element for driving a fan motor to rotate. Since the phase control unit provides the effect of controlling the fan motor's output power and rotational speed, it enables the fan to have increased rotational speed and provide improved heat dissipation and ventilation effects.Type: ApplicationFiled: December 11, 2013Publication date: June 11, 2015Applicant: Asia Vital Components Co., Ltd.Inventors: Mao-Lin Chen, Chih-Chiang Chao
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Patent number: 9046631Abstract: A light guiding plate and a light guiding device are provided, and the light guiding plate is implemented in the light guiding device. The light guiding device includes a side light source emitting light to the light guiding plate. The light guiding plate includes a first surface, a second surface and a third surface. The second surface is opposite to the first surface, and the third surface is adjacent to the first surface and the second surface. The second surface includes plural light guiding units, and each of the light guiding units includes a total reflection concavity and a light emitting convexity. The light emitting convexity surrounds the total reflection concavity.Type: GrantFiled: December 5, 2013Date of Patent: June 2, 2015Assignee: Industrial Technology Research InstiuteInventors: Chih-Chiang Chao, Po-Ling Shiao, Mei-Chun Lai
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Publication number: 20150055818Abstract: A speaker structure includes a main body, a circuit board and a magnetic component. The main body has a receiving section and a recess formed on an outer circumference of the receiving section. A center of the main body is formed with a hole in communication with the receiving section. The circuit board has a board body and an outer frame body inlaid in the recess of the main body. The magnetic component is received in the hole. A voice coil collar is disposed around the magnetic component. Multiple windings are wound around a surface of the voice coil collar. Two ends of the windings are attached to the circuit board. According to the above arrangement, the volume of the speaker structure is greatly reduced and the manufacturing cost of the speaker structure is lowered.Type: ApplicationFiled: August 22, 2013Publication date: February 26, 2015Applicant: ASIA VITAL COMPONENTS CO., LTD.Inventors: Mao-Lin Chen, Chih-Chiang Chao
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Publication number: 20150016148Abstract: A light guiding plate and a light guiding device are provided, and the light guiding plate is implemented in the light guiding device. The light guiding device includes a side light source emitting light to the light guiding plate. The light guiding plate includes a first surface, a second surface and a third surface. The second surface is opposite to the first surface, and the third surface is adjacent to the first surface and the second surface. The second surface includes plural light guiding units, and each of the light guiding units includes a total reflection concavity and a light emitting convexity. The light emitting convexity surrounds the total reflection concavity.Type: ApplicationFiled: December 5, 2013Publication date: January 15, 2015Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chih-Chiang CHAO, Po-Ling SHIAO, Mei-Chun LAI
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Patent number: 8596854Abstract: A light-guide module including a light-guide sheet and a light source is provided. The light-guide sheet includes a light-emergent region and a plurality of localized micro-structures located at a first surface of the light-guide sheet, wherein the localized micro-structures are distributed except the light-emergent region. The localized micro-structures include a plurality of arc grooves disposed on a first region. The light source includes a plurality of light-emitting devices. A light-emergent area of each of the light-emitting devices is A. In the localized micro-structures of the first region covered by the light-emitting devices, an area occupied by the arc grooves having aspect ratios greater than 0.5 is greater than or substantially equal to 0.5 A.Type: GrantFiled: July 16, 2012Date of Patent: December 3, 2013Assignee: Industrial Technology Research InstituteInventors: Po-Ling Shiao, Chih-Chiang Chao, Mei-Chun Lai
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Patent number: 8460585Abstract: An optical diffusion structure includes an optical diffusion structure comprising a plurality of convex portions and a plurality of concave portions. Each convex portion is adjacent to a plurality of concave portions and each concave portion is adjacent to a plurality of convex portions. The convex portions, the concave portions and each junction of the convex and concave portions have a curvature different from 0. The optical diffusion structure further includes a diffusion plate having a first surface, wherein the optical diffusion structure is formed on the first surface, and the convex portions are arranged in a two dimensional array along a first direction and a second direction, and the concave portions are arranged in a two dimensional array along a third direction and a fourth direction.Type: GrantFiled: June 30, 2010Date of Patent: June 11, 2013Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng
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Publication number: 20130100663Abstract: A light-guide module including a light-guide sheet and a light source is provided. The light-guide sheet includes a light-emergent region and a plurality of localized micro-structures located at a first surface of the light-guide sheet, wherein the localized micro-structures are distributed except the light-emergent region. The localized micro-structures include a plurality of arc grooves disposed on a first region. The light source includes a plurality of light-emitting devices. A light-emergent area of each of the light-emitting devices is A. In the localized micro-structures of the first region covered by the light-emitting devices, an area occupied by the arc grooves having aspect ratios greater than 0.5 is greater than or substantially equal to 0.5 A.Type: ApplicationFiled: July 16, 2012Publication date: April 25, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Po-Ling Shiao, Chih-Chiang Chao, Mei-Chun Lai
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Patent number: 8210714Abstract: An Illuminant module includes an optical film and a light source array. The optical array includes a plurality of concave surfaces and a plurality of convex surfaces alternatively arranged along at least one direction, wherein each concave surface has a concave surface width along the at least one direction, and each convex surface has a convex surface width along the at least one direction. The light source array includes a plurality of light emitting diodes, wherein the concave surface width is not equal to the convex surface width, and the light from the light source array penetrates the optical film.Type: GrantFiled: January 14, 2009Date of Patent: July 3, 2012Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Mei-Chun Lai
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Patent number: 8198128Abstract: The invention provides a method for fabricating a nano-array comprising the following steps. A template with a plurality of nano-holes is provided. A polymer is embossed by the template to integrally form a plurality of nano-protrusions thereon, and demolding to reveal the nano-protrusions. The nano-protrusion has a concave or convex top surface.Type: GrantFiled: December 1, 2009Date of Patent: June 12, 2012Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Mei-Chun Lai
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Patent number: 7940461Abstract: An optical diffusion module comprises a first diffusion structure comprising a plurality of convex portions and a plurality of concave portions arranged alternatingly, and a second diffusion structure comprising a plurality of convex portions and a plurality of concave portions arranged alternatingly. Light from a light source passes through the first diffusion structure and the second diffusion structure sequentially, and each convex portion is adjacent to a plurality of concave portions and each concave portion is adjacent to a plurality of convex portions, and the convex portions, the concave portions and each junction of the convex and concave portions have a curvature different from 0.Type: GrantFiled: February 12, 2007Date of Patent: May 10, 2011Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Cheng-Hsuan Lin, Mei Chun Lai
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Patent number: 7911700Abstract: A light guiding film is provided including a main body, and a light diffusion structure comprising a plurality of micro concave lenses arranged in a first direction and a second direction to form a second dimensional array and the curvature of each concave lens and the junction of the concave lenses are different from zero. Light from a light source passes through the light diffusion structure and is refracted into the main body and then propagates in the main body by total reflection.Type: GrantFiled: December 4, 2007Date of Patent: March 22, 2011Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Mei-Chun Lai
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Publication number: 20100264555Abstract: An optical diffusion structure includes an optical diffusion structure comprising a plurality of convex portions and a plurality of concave portions. Each convex portion is adjacent to a plurality of concave portions and each concave portion is adjacent to a plurality of convex portions. The convex portions, the concave portions and each junction of the convex and concave portions have a curvature different from 0. The optical diffusion structure further includes a diffusion plate having a first surface, wherein the optical diffusion structure is formed on the first surface, and the convex portions are arranged in a two dimensional array along a first direction and a second direction, and the concave portions are arranged in a two dimensional array along a third direction and a fourth direction.Type: ApplicationFiled: June 30, 2010Publication date: October 21, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Cheng-Hsuan Lin, Mei Chun Lai
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Patent number: 7789548Abstract: An optical diffusion structure includes an optical diffusion structure comprising a plurality of convex portions and a plurality of concave portions. Each convex portion is adjacent to a plurality of concave portions and each concave portion is adjacent to a plurality of convex portions. The convex portions, the concave portions and each junction of the convex and concave portions have a curvature different from 0. The optical diffusion structure further includes a diffusion plate having a first surface, wherein the optical diffusion structure is formed on the first surface, and the convex portions are arranged in a two dimensional array along a first direction and a second direction, and the concave portions are arranged in a two dimensional array along a third direction and a fourth direction.Type: GrantFiled: February 8, 2007Date of Patent: September 7, 2010Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Cheng-Hsuan Lin, Mei Chun Lai
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Publication number: 20100120196Abstract: The invention provides a method for fabricating a nano-array comprising the following steps. A template with a plurality of nano-holes is provided. A polymer is embossed by the template to integrally form a plurality of nano-protrusions thereon, and demolding to reveal the nano-protrusions. The nano-protrusion has a concave or convex top surface.Type: ApplicationFiled: December 1, 2009Publication date: May 13, 2010Applicant: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Mei-Chun Lai
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Patent number: 7711223Abstract: A composite light guiding film module is disclosed, which includes: a light guiding film; a light diffusion structure comprising a plurality of micro concave lenses arranged in a first direction and a second direction to form a second dimensional array and the curvature of each concave lens and the junction of the concave lenses are not equal to zero; and a refraction element comprising at least one refraction structure, wherein light from a light source passes through the refraction element and is refracted to the light diffusion structure, and the light passing through the light diffusion structure is refracted into the light guiding film and then propagates in the light guiding film by total reflection.Type: GrantFiled: March 21, 2008Date of Patent: May 4, 2010Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Mei-Chun Lai
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Publication number: 20100053954Abstract: An Illuminant module includes an optical film and a light source array. The optical array includes a plurality of concave surfaces and a plurality of convex surfaces alternatively arranged along at least one direction, wherein each concave surface has a concave surface width along the at least one direction, and each convex surface has a convex surface width along the at least one direction. The light source array includes a plurality of light emitting diodes, wherein the concave surface width is not equal to the convex surface width, and the light from the light source array penetrates the optical film.Type: ApplicationFiled: January 14, 2009Publication date: March 4, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Mei-Chun Lai
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Patent number: 7656584Abstract: A composite lens structure is disclosed. The composite lens structure includes a diffusion plate and an optical structure formed on the diffusion plate. The optical structure includes a plurality of convex portions arranged in a 2-D matrix along a first direction and a second direction and a plurality of concave portions arranged in a 2-D matrix also along the first direction and the second direction. Each convex portion adjacent to a plurality of concave portions includes a low curvature portion and a high curvature portion higher than the low curvature portion. Each concave portion adjacent to a plurality of convex portions includes a low curvature portion and a high curvature portion lower than the low curvature portion. The convex portions, the concave portions and each junction of the convex portion and the concave portion have a curvature different from 0.Type: GrantFiled: August 22, 2007Date of Patent: February 2, 2010Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Yu-Tsan Tseng, Cheng-Hsuan Lin, Mei-Chun Lai
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Patent number: 7649198Abstract: The invention provides a method for fabricating a nano-array comprising the following steps. A template with a plurality of nano-holes is provided. A polymer is embossed by the template to integrally form a plurality of nano-protrusions thereon, and demolding to reveal the nano-protrusions. The nano-protrusion has a concave or convex top surface.Type: GrantFiled: August 25, 2006Date of Patent: January 19, 2010Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Chao, Po-Ling Shiao, Mei-Chun Lai