Patents by Inventor Chung-Wei Chang

Chung-Wei 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).

  • Publication number: 20150200217
    Abstract: A pixel circuit includes: a photodetector, a signal adjustment circuit and a switch circuit. The photodetector is employed for generating an output signal in response to light that is incident thereon. The signal adjustment circuit is coupled to the photodetector, and employed for selectively adjusting the output signal to allow the output signal to have a plurality of different logarithmic functions in respect to an intensity of the light. The switch circuit is coupled to the signal adjustment circuit and the photodetector, and employed for coupling the photodetector to the signal adjustment circuit.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 16, 2015
    Applicant: Himax Imaging Limited
    Inventors: Dong-Long Lin, Chung-Ren Li, Chung-Wei Chang
  • Publication number: 20150181142
    Abstract: An image sensor includes an M-shared pixel architecture, an N-shared pixel architecture and a switch unit, wherein M is an integer not smaller than two and N is an integer not smaller than two. The switch unit is coupled between a floating diffusion node of the M-shared pixel architecture and a floating diffusion node of the N-shared pixel architecture.
    Type: Application
    Filed: March 17, 2014
    Publication date: June 25, 2015
    Applicant: Himax Imaging Limited
    Inventors: Dong-Long Lin, Chung-Ren Li, Chung-Wei Chang
  • Publication number: 20150070552
    Abstract: An image sensor is provided in the present invention, including a plurality of optical elements, wherein each optical element includes a semiconductor substrate, a dielectric layer and a color filter set. The semiconductor substrate includes a plurality of photosensitive units. The dielectric layer is disposed above the semiconductor substrate and includes a plurality of notches. The color filter set is disposed above the dielectric layer and includes a plurality of filter units and a plurality of convex substances corresponding to the filter units, and the convex substances and the notches are engaged with each other, wherein the convex substances and the notches change in accordance with the distance to the center of the image sensor.
    Type: Application
    Filed: March 13, 2014
    Publication date: March 12, 2015
    Applicant: Himax Imaging Limited
    Inventors: Yu-Tsung Lin, Chung-Wei Chang, Dong-Long Lin
  • Publication number: 20140246713
    Abstract: A semiconductor structure for suppressing hot clusters includes a substrate of a first dopant concentration, an epitaxial layer having a second dopant concentration smaller than the first dopant concentration and directly disposed on the substrate, a dopant gradient region disposed in the epitaxial layer and having a gradient decreasing from the substrate to the epitaxial layer, a shallow trench isolation disposed between a first element region and a second element region, and a shallow trench doping region surrounding the shallow trench isolation and near the dopant gradient region to suppress a hot cluster formed by the first element region to jeopardize the second element region.
    Type: Application
    Filed: March 3, 2014
    Publication date: September 4, 2014
    Applicant: Himax Imaging, Inc.
    Inventors: Yang Wu, Feixia Yu, Chung-Wei Chang
  • Publication number: 20140167118
    Abstract: The present disclosure provides an image sensor semiconductor device. The semiconductor device includes a semiconductor substrate having a first type of dopant; a semiconductor layer having a second type of dopant different from the first type of dopant and disposed on the semiconductor substrate; and an image sensor formed in the semiconductor layer.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: Taiwan Semiconductor Manufacturing Company Ltd.
    Inventors: Chung-Wei Chang, Han-Chi Liu, Chun-Yao Ko, Shou-Gwo Wuu
  • Patent number: 8692304
    Abstract: An image sensor includes: a substrate, at least a pixel, and at least a light shield is provided. Wherein the pixel includes a photodiode and at least a transistor, and the transistor is connected to a metal line via a contact. The light shield is positioned around at least one side of the pixel, wherein the light shield is made while forming the contact.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: April 8, 2014
    Assignee: Himax Imaging, Inc.
    Inventors: Fang-Ming Huang, Chung-Wei Chang, Ping-Hung Yin
  • Patent number: 8669133
    Abstract: The present disclosure provides an image sensor semiconductor device. The semiconductor device includes a semiconductor substrate having a first type of dopant; a semiconductor layer having a second type of dopant different from the first type of dopant and disposed on the semiconductor substrate; and an image sensor formed in the semiconductor layer.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: March 11, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chung-Wei Chang, Han-Chi Liu, Chun-Yao Ko, Shou-Gwo Wuu
  • Patent number: 8431975
    Abstract: A back side illumination (BSI) image sensor includes at least one pixel. The pixel area includes a photo diode and a transfer transistor. The transfer transistor has a control electrode made of a gate poly and a gate oxide for receiving a control instruction, a first electrode coupled to the photo diode, and a second electrode, wherein an induced conduction channel of the transfer transistor partially surrounds a recessed space which is filled with the gate poly and the gate oxide of the transfer transistor.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 30, 2013
    Assignee: Himax Imaging, Inc.
    Inventors: Chih-Wei Hsiung, Fang-Ming Huang, Chung-Wei Chang
  • Patent number: 8368160
    Abstract: An image sensing device is disclosed, including an epitaxy layer having the a conductivity type, including a first pixel area corresponding to a first incident light, a second pixel area corresponding to a second incident light, and a third pixel area corresponding to a third incident light, wherein the wavelength of the first incident light is longer than that of the second incident light and the wavelength of the second incident light is longer than that of the third incident light. A photodiode is disposed in an upper portion of the epitaxy layer, and a first deep well for reducing pixel-to-pixel talk of the image sensing device is disposed in a lower portion of the epitaxy layer in the second pixel area and the third pixel area, wherein at least a portion of the epitaxy layer in first pixel area does not include the first deep well.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: February 5, 2013
    Assignee: Himax Imaging, Inc.
    Inventors: Chung-Wei Chang, Fang-Ming Huang, Chi-Shao Lin, Yu-Ping Hu
  • Patent number: 8368130
    Abstract: A method to fabricate an image sensor includes providing a semiconductor substrate having a pixel area and a logic area, forming a light sensing element in the pixel area, and forming a first transistor in the pixel area and a second transistor in the logic area. The step of forming the first transistor in the pixel area and the second transistor in the logic area includes performing a first implant process in the pixel area and the logic area, performing a second implant process in the pixel area and the logic area, and performing a third implant process only in the logic area.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: February 5, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Yao Ko, Chung-Wei Chang, Han-Chi Liu, Shou-Gwo Wuu
  • Patent number: 8367455
    Abstract: A fabricating method of an image sensor includes the steps of: providing a substrate; forming sensing elements on the substrate; forming microlenses on the sensing elements; filling a stuffed material on the microlenses, and air regions are formed in the stuffed material; and forming optical filters on the stuffed material.
    Type: Grant
    Filed: May 30, 2010
    Date of Patent: February 5, 2013
    Assignee: Himax Imaging, Inc.
    Inventors: Yu-Ping Hu, Chih-Wei Hsiung, Fang-Ming Huang, Chia-Chi Huang, Chung-Wei Chang
  • Patent number: 8278132
    Abstract: The present invention provides an image sensor and a fabricating method thereof capable of approaching higher quantum efficiency and reducing cost. The method comprises: providing a substrate; forming a pixel region on a top surface of the substrate; forming an interlayer insulating layer and at least a metal line on the pixel region; forming an isolation carrier layer having a hole array therein on the interlayer insulating layer; grinding a lower surface of the substrate to reduce the thickness of the substrate; placing a plurality of conductors into the hole array to form a plurality of bumps on the isolation carrier layer.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: October 2, 2012
    Assignee: Himax Imaging, Inc.
    Inventors: Chih-Min Liu, Fang-Ming Huang, Ping-Hung Yin, Kuo-Chan Huang, Chung-Wei Chang
  • Publication number: 20120193691
    Abstract: A back side illumination (BSI) image sensor includes at least one pixel. The pixel area includes a photo diode and a transfer transistor. The transfer transistor has a control electrode made of a gate poly and a gate oxide for receiving a control instruction, a first electrode coupled to the photo diode, and a second electrode, wherein an induced conduction channel of the transfer transistor partially surrounds a recessed space which is filled with the gate poly and the gate oxide of the first transistor.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 2, 2012
    Inventors: Chih-Wei Hsiung, Fang-Ming Huang, Chung-Wei Chang
  • Patent number: 8164733
    Abstract: A liquid crystal display panel includes a first substrate, and a second substrate opposite to and facing the first substrate. The first substrate, having a repairing region and a display region defined thereon, includes at least one repairing wire arranged in the repairing region, and a passivation layer disposed over the repairing wire. The second substrate includes a common electrode, and at least one repairing protection pad formed thereon. The repairing protection pad, disposed on the surface of the common electrode and in the repairing region, faces the first substrate, and corresponds to the repairing wire.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: April 24, 2012
    Assignee: AU Optronics Corp.
    Inventor: Chung-Wei Chang
  • Publication number: 20120080766
    Abstract: An image sensing device is disclosed, including an epitaxy layer having the a conductivity type, including a first pixel area corresponding to a first incident light, a second pixel area corresponding to a second incident light, and a third pixel area corresponding to a third incident light, wherein the wavelength of the first incident light is longer than that of the second incident light and the wavelength of the second incident light is longer than that of the third incident light. A photodiode is disposed in an upper portion of the epitaxy layer, and a first deep well for reducing pixel-to-pixel talk of the image sensing device is disposed in a lower portion of the epitaxy layer in the second pixel area and the third pixel area, wherein at least a portion of the epitaxy layer in first pixel area does not include the first deep well.
    Type: Application
    Filed: October 5, 2010
    Publication date: April 5, 2012
    Applicant: HIMAX IMAGING, INC.
    Inventors: Chung-Wei Chang, Fang-Ming Huang, Chi-Shao Lin, Yu-Ping Hu
  • Publication number: 20120032241
    Abstract: An image sensor includes: a substrate, at least a pixel, and at least a light shield is provided. Wherein the pixel includes a photodiode and at least a transistor, and the transistor is connected to a metal line via a contact. The light shield is positioned around at least one side of the pixel, wherein the light shield is made while forming the contact.
    Type: Application
    Filed: August 3, 2010
    Publication date: February 9, 2012
    Inventors: Fang-Ming Huang, Chung-Wei Chang, Ping-Hung Yin
  • Publication number: 20110291211
    Abstract: A fabricating method of an image sensor includes the steps of: providing a substrate; forming sensing elements on the substrate; forming microlenses on the sensing elements; filling a stuffed material on the microlenses, and air regions are formed in the stuffed material; and forming optical filters on the stuffed material.
    Type: Application
    Filed: May 30, 2010
    Publication date: December 1, 2011
    Inventors: Yu-Ping Hu, Chih-Wei Hsiung, Fang-Ming Huang, Chia-Chi Huang, Chung-Wei Chang
  • Publication number: 20110284984
    Abstract: The present invention provides an image sensor and a fabricating method thereof capable of approaching higher quantum efficiency and reducing cost. The method comprises: providing a substrate; forming a pixel region on a top surface of the substrate; forming an interlayer insulating layer and at least a metal line on the pixel region; forming an isolation carrier layer having a hole array therein on the interlayer insulating layer; grinding a lower surface of the substrate to reduce the thickness of the substrate; placing a plurality of conductors into the hole array to form a plurality of bumps on the isolation carrier layer.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 24, 2011
    Inventors: Chih-Min Liu, Fang-Ming Huang, Ping-Hung Yin, Kuo-Chan Huang, Chung-Wei Chang
  • Publication number: 20110278687
    Abstract: A backside-illuminated sensor includes a substrate, at least one lens and at least one pixel structure. The substrate has a front surface and a backside surface, and the lens is formed on the backside surface of the substrate and the pixel structure is formed on a pixel area included in the front surface of the substrate, where a projected area of the pixel area on the backside surface in a thickness direction of the substrate is covered by the lens. The pixel structure includes a first power node for receiving a first supply voltage, a second power node for receiving a second supply voltage different from the first supply voltage, a sensing element and a capacitor for noise reduction. The sensing element generates a sensing signal according to an incident luminance from the lens.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 17, 2011
    Inventors: Fang-Ming Huang, Ping-Hung Yin, Chung-Wei Chang
  • Publication number: 20110133260
    Abstract: A method to fabricate an image sensor includes providing a semiconductor substrate having a pixel area and a logic area, forming a light sensing element in the pixel area, and forming a first transistor in the pixel area and a second transistor in the logic area. The step of forming the first transistor in the pixel area and the second transistor in the logic area includes performing a first implant process in the pixel area and the logic area, performing a second implant process in the pixel area and the logic area, and performing a third implant process only in the logic area.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 9, 2011
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chun-Yao Ko, Chung-Wei Chang, Han-Chi Liu, Shou-Gwo Wuu