Patents by Inventor You Chia Chang
You Chia Chang 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: 20240369599Abstract: A probe card device comprises a testing circuit board, at least one probe and an image capture module. The testing circuit board has a first surface and a second surface in opposite. The at least one probe is disposed on the first surface of the testing circuit board and electrically connected to the testing circuit board. The at least one probe has a probe head and the probe head has a first height to the first surface. The image capture module is disposed on the first surface of the testing circuit board, and is located adjacent to the probe. The image capture module has a head portion and the head portion has a second height to the first surface. Wherein, the second height is smaller than the first height, and the image capture module is aligned to the probe head to capture a visible light image from the probe head.Type: ApplicationFiled: April 30, 2024Publication date: November 7, 2024Applicant: Silicon Future Manufacturing Company Ltd.Inventors: TIEN-CHIA LEE, HENG-RUI CHANG, YOU-CHEN LIN, MING-CHANG LIAO, WEN-TSUNG SUNG
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Publication number: 20240275044Abstract: An optical apparatus comprising an optical switch array comprising a plurality of optical switches configured to selectively route light through one or more of a plurality of waveguides, a plurality of emitters, wherein at least one emitter of the plurality of emitters is disposed in communication with the one or more of the plurality of waveguides and configured to receive light and cause at least a portion of the light to exit the waveguide, and a lens disposed to receive light exiting the one or more of a plurality of waveguides via the at least one emitter, wherein the lens is configured to direct the received light as an optical output, and wherein the position of the at least one emitter relative to the lens facilitates beam steering of the optical output.Type: ApplicationFiled: April 3, 2024Publication date: August 15, 2024Inventors: Michal LIPSON, Christopher Thomas PHARE, You-Chia CHANG, Steven A. MILLER
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Patent number: 11984665Abstract: An optical apparatus comprising an optical switch array comprising a plurality of optical switches configured to selectively route light through one or more of a plurality of waveguides, a plurality of emitters, wherein at least one emitter of the plurality of emitters is disposed in communication with the one or more of the plurality of waveguides and configured to receive light and cause at least a portion of the light to exit the waveguide, and a lens disposed to receive light exiting the one or more of a plurality of waveguides via the at least one emitter, wherein the lens is configured to direct the received light as an optical output, and wherein the position of the at least one emitter relative to the lens facilitates beam steering of the optical output.Type: GrantFiled: September 13, 2019Date of Patent: May 14, 2024Assignee: THE TRUSTEES OF THE COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Michal Lipson, Christoper Thomas Phare, You-Chia Chang, Steven A. Miller
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Patent number: 11385410Abstract: A millimeter scale weak grating coupler comprising a silicon waveguide having bars of overlay material of length (a) disposed periodically at a period (?) adjacent the silicon waveguide whereby a uniform grating output is achieved.Type: GrantFiled: June 26, 2018Date of Patent: July 12, 2022Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Aseema Mohanty, Christopher T. Phare, Moshe Zadka, Samantha P. Roberts, You-Chia Chang
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Patent number: 11256031Abstract: Light recycling within a waveguide is achieved by mode conversion instead of resonance. A structure is provided in in which light makes multiple passes through the same waveguide by converting the mode to a different mode after each pass and rerouting the light back into the same waveguide. The structure includes a bus waveguide and at least one mode converter device disposed at or adjacent each of two opposing ends of the bus waveguide, wherein each mode converter devices is configured to receive light having a receiving mode along a first direction and to cause light having a different mode from the receiving mode to propagate in a second direction opposite the first direction.Type: GrantFiled: June 26, 2018Date of Patent: February 22, 2022Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, You-Chia Chang, Samantha P. Roberts, Brian Stern, Utsav D. Dave
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Publication number: 20220037786Abstract: An optical apparatus comprising an optical switch array comprising a plurality of optical switches configured to selectively route light through one or more of a plurality of waveguides, a plurality of emitters, wherein at least one emitter of the plurality of emitters is disposed in communication with the one or more of the plurality of waveguides and configured to receive light and cause at least a portion of the light to exit the waveguide, and a lens disposed to receive light exiting the one or more of a plurality of waveguides via the at least one emitter, wherein the lens is configured to direct the received light as an optical output, and wherein the position of the at least one emitter relative to the lens facilitates beam steering of the optical output.Type: ApplicationFiled: September 13, 2019Publication date: February 3, 2022Inventors: Michal LIPSON, Christoper Thomas PHARE, You-Chia CHANG, Steven A. MILLER
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Patent number: 10746935Abstract: An optical coupling apparatus comprising a substrate having a trench formed therein, the trench having a width measured between two opposing walls that define a portion of the trench; and a waveguide disposed on or in the substrate, the waveguide having a width that tapers along an axis of light propagation.Type: GrantFiled: January 30, 2018Date of Patent: August 18, 2020Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, You-Chia Chang, Oscar Adrian Jimenez Gordillo, Mohammad Amin Tadayon, Brian Stern
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Publication number: 20200225413Abstract: An optical coupling apparatus comprising a substrate having a trench formed therein, the trench having a width measured between two opposing walls that define a portion of the trench; and a waveguide disposed on or in the substrate, the waveguide having a width that tapers along an axis of light propagation.Type: ApplicationFiled: January 30, 2018Publication date: July 16, 2020Inventors: Michal Lipson, You-Chia Chang, Oscar Adrian Jimenez Gordillo, Mohammad Amin Tadayon, Brian Stern
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Publication number: 20200225415Abstract: Light recycling within a waveguide is achieved by mode conversion instead of resonance. A structure is provided in in which light makes multiple passes through the same waveguide by converting the mode to a different mode after each pass and rerouting the light back into the same waveguide. The structure includes a bus waveguide and at least one mode converter device disposed at or adjacent each of two opposing ends of the bus waveguide, wherein each mode converter devices is configured to receive light having a receiving mode along a first direction and to cause light having a different mode from the receiving mode to propagate in a second direction opposite the first direction.Type: ApplicationFiled: June 26, 2018Publication date: July 16, 2020Inventors: Michal LIPSON, You-Chia CHANG, Samantha P. ROBERTS, Brian STERN, Utsav D. DAVE
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Publication number: 20200158956Abstract: A millimeter scale weak grating coupler comprising a silicon waveguide having bars of overlay material of length (a) disposed periodically at a period (?) adjacent the silicon waveguide whereby a uniform grating output is achieved.Type: ApplicationFiled: June 26, 2018Publication date: May 21, 2020Inventors: Michal LIPSON, Aseema MOHANTY, Christopher T. PHARE, Moshe ZADKA, Samantha P. ROBERTS, You-Chia CHANG
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Publication number: 20170237918Abstract: A light field imaging system with transparent photodetectors is presented. The light field imaging system includes: a stack of two or more detector planes, an imaging optic, and an image processor. The detector planes include one or more transparent photodetectors, such that transparent photodetectors have transparency greater than fifty percent (at one or more wavelengths) while simultaneously exhibiting responsivity greater than one amp per watt. The imaging optic is configured to receive light rays from a scene and refract the light rays towards the stack of two or more detector planes, such that the refracted light rays pass through the transparent detector planes and the refracted light rays are focused within the stack of detector planes. The image processor reconstruct a light field for the scene (at one of more wavelengths) using the light intensity distribution measured by each of the photodetectors.Type: ApplicationFiled: February 10, 2017Publication date: August 17, 2017Inventors: Theodore B. NORRIS, Zhaohui ZHONG, Jeffrey A. FESSLER, Che-Hung LIU, You-Chia CHANG
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Patent number: 9680038Abstract: A photodetector is provided with a thin film double layer heterostructure. The photodetector is comprised of: a substrate; a channel layer of a transistor deposited onto a top surface of the substrate; a source layer of the transistor deposited on the top surface of the substrate; a drain layer of the transistor deposited on the top surface of the substrate, the source layer and the drain layer disposed on opposing sides of the channel layer; a barrier layer deposited onto the channel layer; and a light absorbing layer deposited on the barrier layer. The light absorbing layer is configured to absorb light and, in response to light incident on the light absorbing layer, electrical conductance of the channel layer is changed through hot carrier tunneling from the light absorbing layer to the channel layer.Type: GrantFiled: March 11, 2014Date of Patent: June 13, 2017Assignee: The Regents Of The University Of MichiganInventors: Zhaohui Zhong, Theodore B. Norris, Chang-Hua Liu, You-Chia Chang
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Publication number: 20140264275Abstract: A photodetector is provided with a thin film double layer heterostructure. The photodetector is comprised of: a substrate; a channel layer of a transistor deposited onto a top surface of the substrate; a source layer of the transistor deposited on the top surface of the substrate; a drain layer of the transistor deposited on the top surface of the substrate, the source layer and the drain layer disposed on opposing sides of the channel layer; a barrier layer deposited onto the channel layer; and a light absorbing layer deposited on the barrier layer. The light absorbing layer is configured to absorb light and, in response to light incident on the light absorbing layer, electrical conductance of the channel layer is changed through hot carrier tunneling from the light absorbing layer to the channel layer.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Inventors: Zhaohui Zhong, Theodore B. Norris, Chang-Hua Liu, You-Chia Chang
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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: 8049961Abstract: A lens unit and a projection screen made of the same are disclosed. The lens unit includes a micro lens having a light incident surface and a light emergent surface opposing to the light incident surface; a light absorbing layer formed on the light emergent surface of the micro lens and having a cavity formed therein; a scattering layer formed in the cavity of the light absorbing layer and including a transparent resin blended with scattering particles; and a reflective layer formed on the light absorbing layer and the scattering layer. The projection screen includes a plurality of the lens units, thereby achieving high contrast and high energy utilization efficiency of incident light with a large viewing angle.Type: GrantFiled: September 15, 2009Date of Patent: November 1, 2011Assignee: Industrial Technology Research InstituteInventors: Ding-Zheng Lin, Yaw-Ting Wu, You-Chia Chang, Chun-Hsiang Wen, Jyi-Tyan Yeh
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Patent number: 7957250Abstract: A micro optical head is provided, which provides sub-wavelength focusing spot and very long depth of focus. The optical head includes a transparent substrate, an opaque film, and at least one sub-wavelength annular channel. After coherent light transmits the transparent substrate supporting the optical head and passes through the appropriately designed sub-wavelength annular channel, the transmitted light can overcome the diffraction limit, and the transmission energy is improved efficiently. The transmitted light converges after a certain distance behind the optical head and forms a sub-wavelength-scale beam that maintains a very long distance without divergence.Type: GrantFiled: December 20, 2007Date of Patent: June 7, 2011Assignees: Industrial Technology Research Institute, National Taiwan UniversityInventors: Chih-Kung Lee, Ding-Zheng Lin, Tsung-Dar Cheng, Chin-Kai Chang, Chih-Hao Chen, Chau-Shioung Yeh, You-Chia Chang
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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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Publication number: 20100224242Abstract: A photoelectric converting device which includes a substrate layer and an active layer is proposed. The active layer, which is disposed over the substrate layer, has a light receiving surface with a textured structure. The textured structure includes multiple indented units and each of the indented units includes three planes, which form an indentation tip at the intersection point between the three planes. The three planes are perpendicular or about perpendicular to each other.Type: ApplicationFiled: May 14, 2009Publication date: September 9, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: You-Chia Chang, Chun-Ti Chen, Jen-You Chu, Yu-Hsin Yeh
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Patent number: 7792006Abstract: The present invention provides an optical head with a single or multiple sub-wavelength light beams, which can be used in arenas such as photolithography, optical storage, optical microscopy, to name a few. The present invention includes a transparent substrate, a thin film, and a surface structure with sub-wavelength surface profile. The incident light transmits through the transparent substrate, forms a surface plasma wave along the sub-wavelength aperture located within the thin film, and finally re-emits through spatial coupling with the sub-wavelength profile of the surface structure. As the coupled re-emitting light beam or light beams can maintain the waist less than that of the diffraction limit for a few micrometers out of the surface with sub-wavelength profile in many cases, this invention can have applications ranging from micro or nano manufacturing, metrology, and manipulation by using light beams with waist smaller than the diffraction limit.Type: GrantFiled: May 29, 2007Date of Patent: September 7, 2010Assignee: Industrial Technology Research InstituteInventors: Chih King Lee, Liang Bin Yu, Jiunn Woei Liaw, Ding Zheng Lin, Jyi Tyan Yeh, Yu Tsung Chiu, Chun Ti Chen, Chyan Chi Wu, Chau Shioung Yeh, You Chia Chang, Kuo Tung Huang, Yi Chun Chen, Yeong Feng Wang
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Publication number: 20100165459Abstract: A lens unit and a projection screen made of the same are disclosed. The lens unit includes a micro lens having a light incident surface and a light emergent surface opposing to the light incident surface; a light absorbing layer formed on the light emergent surface of the micro lens and having a cavity formed therein; a scattering layer formed in the cavity of the light absorbing layer and including a transparent resin blended with scattering particles; and a reflective layer formed on the light absorbing layer and the scattering layer. The projection screen includes a plurality of the lens units, thereby achieving high contrast and high energy utilization efficiency of incident light with a large viewing angle.Type: ApplicationFiled: September 15, 2009Publication date: July 1, 2010Inventors: Ding-Zheng Lin, Yaw-Ting Wu, You-Chia Chang, Chun-Hsiang Wen, Jyi-Tyan Yeh