Patents by Inventor Hsin-Chih Tai

Hsin-Chih Tai 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).

  • Patent number: 10665626
    Abstract: An image sensor comprises a first photodiode and a second photodiode having a smaller full-well capacitance than the first photodiode, wherein the second photodiode is adjacent to the first photodiode; a first micro-lens is disposed above the first photodiode and on an illuminated side of the image sensor; a second micro-lens is disposed above the second photodiode and on the illuminated side of the image sensor; and a coating layer disposed on both the first and second micro-lens, wherein the coating layer forms a flat top surface on the second micro-lens and a conformal coating layer on the first micro-lens.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 26, 2020
    Inventors: Cheng Zhao, Chen-Wei Lu, Zhiqiang Lin, Dyson Hsin-Chih Tai
  • Patent number: 10566377
    Abstract: An image sensor includes a substrate, a plurality of light sensitive pixels, a first plurality of color filters, a plurality of reflective sidewalls, and a second plurality of color filters. The light sensitive pixels are formed on said substrate. The first plurality of color filters is disposed over a first group of the light sensitive pixels. The reflective sidewalls are formed on each side of each of the first plurality of color filters. The second plurality of color filters are disposed over a second group of light sensitive pixels and each color filter of the second plurality of color filters is separated from each adjacent filter of said first plurality of color filters by one of the reflective sidewalls. In a particular embodiment an etch-resistant layer is disposed over the first plurality of color filters and the second group of light sensitive pixels.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: February 18, 2020
    Assignee: OmniVision Technologies, Inc.
    Inventors: Xin Wang, Dajing Yang, Qin Wang, Duli Mao, Dyson Hsin-Chih Tai
  • Patent number: 10481439
    Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 19, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventors: Christopher Morgan Walker, Libo Weng, Oray Orkun Cellek, Ming Zhang, Yin Qian, Dyson Hsin-Chih Tai, Regis Fan
  • Publication number: 20190333953
    Abstract: An image sensor comprises a first photodiode and a second photodiode having a smaller full-well capacitance than the first photodiode, wherein the second photodiode is adjacent to the first photodiode; a first micro-lens is disposed above the first photodiode and on an illuminated side of the image sensor; a second micro-lens is disposed above the second photodiode and on the illuminated side of the image sensor; and a coating layer disposed on both the first and second micro-lens, wherein the coating layer forms a flat top surface on the second micro-lens and a conformal coating layer on the first micro-lens.
    Type: Application
    Filed: April 25, 2018
    Publication date: October 31, 2019
    Applicant: OmniVision Technologies, Inc.
    Inventors: Cheng Zhao, Chen-Wei Lu, Zhiqiang Lin, Dyson Hsin-Chih Tai
  • Patent number: 10462433
    Abstract: An image sensor includes a substrate, a first set of sensor pixels formed on the substrate, and a second set of sensor pixels formed on the substrate. The sensor pixels of the first set are arranged in rows and columns and are configured to detect light within a first range of wavelengths (e.g., white light). The sensor pixels of the second set are arranged in rows and columns and are each configured to detect light within one of a set of ranges of wavelengths (e.g., red, green, and blue). Each range of wavelengths of the set of ranges of wavelengths is a subrange of said first range of wavelengths, and each pixel of the second set of pixels is smaller than each pixel of the first set of pixels.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: October 29, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventors: Gang Chen, Duli Mao, Dyson Hsin-Chih Tai
  • Patent number: 10429699
    Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: October 1, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventors: Christopher Morgan Walker, Libo Weng, Oray Orkun Cellek, Ming Zhang, Yin Qian, Dyson Hsin-Chih Tai, Regis Fan
  • Patent number: 10317733
    Abstract: An alignment layer for a liquid crystal on silicon (LCOS) display includes a nano-particle layer. In a particular embodiment the nano-particle layer includes a lower nano-layer and an upper nano-layer, each formed onto oxide layers of the LCOS display. In a more particular embodiment, the lower nano-layer and the upper nano-layer are offset printed onto the oxide layers.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: June 11, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventors: Ming Zhang, Yin Qian, Libo Weng, Oray Orkun Cellek, Dyson Hsin-Chih Tai, Lequn Liu, Dominic Massetti
  • Patent number: 10204951
    Abstract: A multi-color HDR image sensor includes at least a first combination color pixel with a first color filter and an adjacent second combination color pixel with a second color filter which is different from the first color filter, wherein each combination color pixel includes at least two sub-pixels having at least two adjacent photodiodes. Within each combination color pixel, there is a dielectric deep trench isolation (d-DTI) structure to isolate the two adjacent photodiodes of the two adjacent sub-pixels with same color filters in order to prevent the electrical cross talk. Between two adjacent combination color pixels with different color filters, there is a hybrid deep trench isolation (h-DTI) structure to isolate two adjacent photodiodes of two adjacent sub-pixels with different color filters in order to prevent both optical and electrical cross talk. Each combination color pixel is enclosed on all sides by the hybrid deep trench isolation (h-DTI) structure.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: February 12, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventors: Kazufumi Watanabe, Chih-Wei Hsiung, Dyson Hsin-Chih Tai, Lindsay Alexander Grant
  • Publication number: 20190013348
    Abstract: An image sensor includes a substrate, a plurality of light sensitive pixels, a first plurality of color filters, a plurality of reflective sidewalls, and a second plurality of color filters. The light sensitive pixels are formed on said substrate. The first plurality of color filters is disposed over a first group of the light sensitive pixels. The reflective sidewalls are formed on each side of each of the first plurality of color filters. The second plurality of color filters are disposed over a second group of light sensitive pixels and each color filter of the second plurality of color filters is separated from each adjacent filter of said first plurality of color filters by one of the reflective sidewalls. In a particular embodiment an etch-resistant layer is disposed over the first plurality of color filters and the second group of light sensitive pixels.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 10, 2019
    Applicant: OmniVision Technologies, Inc.
    Inventors: Xin Wang, Dajiang Yang, Qin Wang, Duli Mao, Dyson Hsin-Chih Tai
  • Patent number: 10103194
    Abstract: An image sensor includes a substrate, a plurality of light sensitive pixels, a first plurality of color filters, a plurality of reflective sidewalls, and a second plurality of color filters. The light sensitive pixels are formed on said substrate. The first plurality of color filters is disposed over a first group of the light sensitive pixels. The reflective sidewalls are formed on each side of each of the first plurality of color filters. The second plurality of color filters are disposed over a second group of light sensitive pixels and each color filter of the second plurality of color filters is separated from each adjacent filter of said first plurality of color filters by one of the reflective sidewalls. In a particular embodiment an etch-resistant layer is disposed over the first plurality of color filters and the second group of light sensitive pixels.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 16, 2018
    Assignee: OmniVision Technologies, Inc.
    Inventors: Xin Wang, Dajiang Yang, Qin Wang, Duli Mao, Dyson Hsin-Chih Tai
  • Publication number: 20180286897
    Abstract: A multi-color HDR image sensor includes at least a first combination color pixel with a first color filter and an adjacent second combination color pixel with a second color filter which is different from the first color filter, wherein each combination color pixel includes at least two sub-pixels having at least two adjacent photodiodes. Within each combination color pixel, there is a dielectric deep trench isolation (d-DTI) structure to isolate the two adjacent photodiodes of the two adjacent sub-pixels with same color filters in order to prevent the electrical cross talk. Between two adjacent combination color pixels with different color filters, there is a hybrid deep trench isolation (h-DTI) structure to isolate two adjacent photodiodes of two adjacent sub-pixels with different color filters in order to prevent both optical and electrical cross talk. Each combination color pixel is enclosed on all sides by the hybrid deep trench isolation (h-DTI) structure.
    Type: Application
    Filed: January 29, 2018
    Publication date: October 4, 2018
    Applicant: OmniVision Technologies, Inc.
    Inventors: Kazufumi Watanabe, Chih-Wei Hsiung, Dyson Hsin-Chih Tai, Lindsay Alexander Grant
  • Publication number: 20180249136
    Abstract: An image sensor includes a substrate, a first set of sensor pixels formed on the substrate, and a second set of sensor pixels formed on the substrate. The sensor pixels of the first set are arranged in rows and columns and are configured to detect light within a first range of wavelengths (e.g., white light). The sensor pixels of the second set are arranged in rows and columns and are each configured to detect light within one of a set of ranges of wavelengths (e.g., red, green, and blue). Each range of wavelengths of the set of ranges of wavelengths is a subrange of said first range of wavelengths, and each pixel of the second set of pixels is smaller than each pixel of the first set of pixels.
    Type: Application
    Filed: May 1, 2018
    Publication date: August 30, 2018
    Applicant: OmniVision Technologies, Inc.
    Inventors: Gang Chen, Duli Mao, Dyson Hsin-Chih Tai
  • Patent number: 9986213
    Abstract: An image sensor includes a substrate, a first set of sensor pixels formed on the substrate, and a second set of sensor pixels formed on the substrate. The sensor pixels of the first set are arranged in rows and columns and are configured to detect light within a first range of wavelengths (e.g., white light). The sensor pixels of the second set are arranged in rows and columns and are each configured to detect light within one of a set of ranges of wavelengths (e.g., red, green, and blue). Each range of wavelengths of the set of ranges of wavelengths is a subrange of said first range of wavelengths, and each pixel of the second set of pixels is smaller than each pixel of the first set of pixels.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: May 29, 2018
    Assignee: OmniVision Technologies, Inc.
    Inventors: Gang Chen, Duli Mao, Dyson Hsin-Chih Tai
  • Publication number: 20180143498
    Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
    Type: Application
    Filed: February 9, 2017
    Publication date: May 24, 2018
    Applicant: OmniVision Technologies, Inc.
    Inventors: Christopher Morgan Walker, Libo Weng, Oray Orkun Cellek, Ming Zhang, Yin Qian, Dyson Hsin-Chih Tai, Regis Fan
  • Publication number: 20180144710
    Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 24, 2018
    Applicant: OmniVision Technologies, Inc.
    Inventors: Christopher Morgan Walker, Libo Weng, Oray Orkun Cellek, Ming Zhang, Yin Qian, Dyson Hsin-Chih Tai, Regis Fan
  • Publication number: 20180113336
    Abstract: An alignment layer for a liquid crystal on silicon (LCOS) display includes a nano-particle layer. In a particular embodiment the nano-particle layer includes a lower nano-layer and an upper nano-layer, each formed onto oxide layers of the LCOS display. In a more particular embodiment, the lower nano-layer and the upper nano-layer are offset printed onto the oxide layers.
    Type: Application
    Filed: October 26, 2016
    Publication date: April 26, 2018
    Applicant: OmniVision Technologies, Inc.
    Inventors: Ming Zhang, Yin Qian, Libo Weng, Oray Orkun Cellek, Dyson Hsin-Chih Tai, Lequn Liu, Dominic Massetti
  • Publication number: 20180090538
    Abstract: An image sensor includes a substrate, a plurality of light sensitive pixels, a first plurality of color filters, a plurality of reflective sidewalls, and a second plurality of color filters. The light sensitive pixels are formed on said substrate. The first plurality of color filters is disposed over a first group of the light sensitive pixels. The reflective sidewalls are formed on each side of each of the first plurality of color filters. The second plurality of color filters are disposed over a second group of light sensitive pixels and each color filter of the second plurality of color filters is separated from each adjacent filter of said first plurality of color filters by one of the reflective sidewalls. In a particular embodiment an etch-resistant layer is disposed over the first plurality of color filters and the second group of light sensitive pixels.
    Type: Application
    Filed: September 26, 2016
    Publication date: March 29, 2018
    Applicant: OmniVision Technologies, Inc.
    Inventors: Xin Wang, Dajiang Yang, Qin Wang, Duli Mao, Dyson Hsin-Chih Tai
  • Patent number: 9921442
    Abstract: A novel method of forming an alignment layer of a liquid crystal display device includes the steps of providing a substrate (e.g., a processed silicon wafer, etc.) having an alignment layer material deposited thereon and applying a series of pulses from a pulse laser to anneal portions of the alignment layer material and alter its surface morphology. The method can include the step of depositing the alignment layer material (e.g., a spin-on dielectric including SiO2) over the substrate using a spin-on process prior to laser annealing. Applying the series of laser pulses creates a repetitive pattern of features that facilitate alignment of liquid crystals according to a laser scan trace. Liquid crystal display devices with laser-annealed alignment layer(s) are also disclosed. The alignment layers of the invention are quickly and inexpensively applied and are very robust under prolonged, high-intensity light stress.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: March 20, 2018
    Assignee: OmniVision Technologies, Inc.
    Inventors: Yin Qian, Dyson Hsin-Chih Tai, Ming Zhang, Chia-Chun Miao
  • Publication number: 20180007324
    Abstract: An image sensor includes a substrate, a first set of sensor pixels formed on the substrate, and a second set of sensor pixels formed on the substrate. The sensor pixels of the first set are arranged in rows and columns and are configured to detect light within a first range of wavelengths (e.g., white light). The sensor pixels of the second set are arranged in rows and columns and are each configured to detect light within one of a set of ranges of wavelengths (e.g., red, green, and blue). Each range of wavelengths of the set of ranges of wavelengths is a subrange of said first range of wavelengths, and each pixel of the second set of pixels is smaller than each pixel of the first set of pixels.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 4, 2018
    Applicant: OmniVision Technologies, Inc.
    Inventors: Gang Chen, Duli Mao, Dyson Hsin-Chih Tai
  • Publication number: 20170205653
    Abstract: A novel method of forming an alignment layer of a liquid crystal display device includes the steps of providing a substrate (e.g., a processed silicon wafer, etc.) having an alignment layer material deposited thereon and applying a series of pulses from a pulse laser to anneal portions of the alignment layer material and alter its surface morphology. The method can include the step of depositing the alignment layer material (e.g., a spin-on dielectric including SiO2) over the substrate using a spin-on process prior to laser annealing. Applying the series of laser pulses creates a repetitive pattern of features that facilitate alignment of liquid crystals according to a laser scan trace. Liquid crystal display devices with laser-annealed alignment layer(s) are also disclosed. The alignment layers of the invention are quickly and inexpensively applied and are very robust under prolonged, high-intensity light stress.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 20, 2017
    Inventors: Yin Qian, Dyson Hsin-Chih Tai, Ming Zhang, Chia-Chun Miao