Patents by Inventor Ziruo HONG

Ziruo HONG 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: 20230378405
    Abstract: A system may have an external display that presents content to viewers outside of the system. The external display may have a display panel with an array of pixels formed from light-emitting diodes. Optical films that help collimate and homogenize light from the light-emitting diode pixels may overlap the light-emitting diodes. A transparent cover may overlap the display. The transparent cover may have an outer surface and an opposing inner surface. The outer surface and inner surface may be planar or may have a curved cross-sectional profile. An optical louver layer or other solar rejection layer may be interposed between the inner surface of the transparent cover and the display panel. The louver layer may have a series of elongated parallel louvers formed from an opaque polymer or other material. The louvers may be configured to block sunlight reflections while allowing images on the display panel to be viewed.
    Type: Application
    Filed: March 10, 2023
    Publication date: November 23, 2023
    Inventors: Yu P Sun, Jun Qi, Rong Liu, Ziruo Hong, Victor H Yin, Tao Zhan, Yong Seok Choi
  • Publication number: 20230361153
    Abstract: An electronic device may have one or more displays that produce images for a user. The display may include an array of light-emitting diodes. Each light-emitting diode in the array of light-emitting diodes may include a plurality of vias. The vias may be arranged in an array of rows and columns. The light-emitting diodes in the array may share a common cathode. The common cathode may include a conductive layer formed from a reflective material. The conductive layer may be formed in a grid that defines a plurality of openings for the light-emitting diodes or may be formed around the periphery of the array. The array may include light-emitting diodes of two different colors in a head-to-tail arrangement, connected in series, or that share a common cathode. The array may include light-emitting diodes of three different colors that are vertically stacked.
    Type: Application
    Filed: March 8, 2023
    Publication date: November 9, 2023
    Inventors: Ziruo Hong, Ganghun Kim, Jun Qi, Rong Liu, Saijin Liu, Tongbi T. Jiang, Victor H. Yin
  • Publication number: 20230361154
    Abstract: An electronic device may have one or more displays that produce images for a user. The display may include an array of light-emitting diodes. Each light-emitting diode in the array of light-emitting diodes may include a plurality of vias. The vias may be arranged in an array of rows and columns. The light-emitting diodes in the array may share a common cathode. The common cathode may include a conductive layer formed from a reflective material. The conductive layer may be formed in a grid that defines a plurality of openings for the light-emitting diodes or may be formed around the periphery of the array. The array may include light-emitting diodes of two different colors in a head-to-tail arrangement, connected in series, or that share a common cathode. The array may include light-emitting diodes of three different colors that are vertically stacked.
    Type: Application
    Filed: March 8, 2023
    Publication date: November 9, 2023
    Inventors: Ziruo Hong, Ganghun Kim, Jun Qi, Rong Liu, Saijin Liu, Tongbi T Jiang, Victor H Yin
  • Patent number: 11719978
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes (LEDs) on a printed circuit board. The display may have a notch to accommodate an input-output component. Reflective layers may be included in the notch. The backlight may include a color conversion layer with a property that varies as a function of position. The light-emitting diodes may be covered by a slab of encapsulant with recesses in an upper surface.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: August 8, 2023
    Assignee: Apple Inc.
    Inventors: Zhenyue Luo, Meizi Jiao, Morteza Amoorezaei, Ling Han, Chungjae Lee, Ziruo Hong, Wei He, Rong Liu, Xinyu Zhu, Mingxia Gu, Jun Qi, Eric L. Benson, Victor H. Yin
  • Patent number: 11650484
    Abstract: An electronic device may have a camera. The camera may capture still and moving images. A camera status indicator may be included in the electronic device. The camera status indicator may emit light to indicate when the camera is in use capturing video or other images. The camera status indicator may have multiple light-emitting devices such as light-emitting diodes or lasers. The light-emitting devices may have different colors. Clear encapsulant may cover the light-emitting devices. A white polymer wall or other light recycling structure may run along an outer peripheral edge of the encapsulant. A light diffusing coating layer may coat an outer surface of the clear encapsulant. Light reflections from the status indicator may be reduced in captured images.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: May 16, 2023
    Assignee: Apple Inc.
    Inventors: Rong Liu, Benjamin M. Oztalay, Chenhua You, Corey S. Provencher, Florence W. Ow, Jeremy L. Britt, Joshua A. Spechler, Jun Qi, Ling Han, Shaofeng Liu, Sherry Cao, Tavys Q. Ashcroft, Victor H. Yin, Wenyong Zhu, Ziruo Hong, Janos C. Keresztes, Hung Sheng Lin
  • Publication number: 20230093750
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes (LEDs) on a printed circuit board. The display may have a notch to accommodate an input-output component. Reflective layers may be included in the notch. The backlight may include a color conversion layer with a property that varies as a function of position. The light-emitting diodes may be covered by a slab of encapsulant with recesses in an upper surface.
    Type: Application
    Filed: November 4, 2021
    Publication date: March 23, 2023
    Inventors: Zhenyue Luo, Meizi Jiao, Morteza Amoorezaei, Ling Han, Chungjae Lee, Ziruo Hong, Wei He, Rong Liu, Xinyu Zhu, Mingxia Gu, Jun Qi, Eric L. Benson, Victor H. Yin
  • Patent number: 11333924
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: May 17, 2022
    Assignee: Apple Inc.
    Inventors: Wei Lv, Pee Khiam So, Wenyong Zhu, Daming Xu, Victor H. Yin, Mookyung Son, Ryan A. Zimmerman, Ziruo Hong, Rong Liu, Jun Qi, Po Hsun Chen, Zhenbin Ge, Fei Yan, Wei He
  • Patent number: 11294236
    Abstract: An electronic device may have a display with a backlight. The backlight provides backlight illumination for an array of pixels that is displaying images. The backlight may include an array of cells. Each cell may contain a light source with one or more light-emitting diodes and a cavity reflector that reflects light from the light source outwardly through a diffuser for use in forming the backlight illumination. The light sources may be mounted to a printed circuit. Support posts on the printed circuit may be used to maintain the diffuser at a fixed distance from the printed circuit. Sensors on the printed circuit may be used to measure separation distances between the printed circuit and diffuser. Adjustments to pixel gain profiles can be made based on the measured separation distances.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: April 5, 2022
    Assignee: Apple Inc.
    Inventors: Rong Liu, Yu P. Sun, Erik A. Zweigle, Jun Qi, Victor H. Yin, Ziruo Hong, Sungwon Bae
  • Publication number: 20220005798
    Abstract: An electronic device may include a display having a monolithic array of light-emitting diodes mounted to a surface of a substrate layer. The diodes may include contact pads. Driver circuitry may independently drive each of the diodes in the array using drive signals. The driver circuitry may be formed on a driver integrated circuit. Bond pads may be formed on a surface of the integrated circuit. Copper pillars may be grown on the bond pads. In another suitable arrangement, the driver circuitry may be formed on a driver printed circuit board coupled to an interposer by a flexible printed circuit. The interposer may include bond pads and copper pillars grown on the bond pads. The contact pads on each of the diodes may be simultaneously bonded to the copper pillars. A surface of the substrate layer may be patterned to form light redirecting elements if desired.
    Type: Application
    Filed: September 15, 2021
    Publication date: January 6, 2022
    Inventors: Jun Qi, Rong Liu, Saijin Liu, Shaofeng Liu, Tongbi T. Jiang, Victor H. Yin, Xia Li, Xiang Fang, Ziruo Hong
  • Patent number: 11036082
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include an array of light-emitting diodes and a light reflector that helps reflect light from the light-emitting diodes through the pixel array. A color conversion layer may be used to convert light from the light-emitting diodes from blue light to white light. A microlens array layer formed over the color conversion layer may spread the light from the color conversion layer to homogenize the light. To ensure light is emitted from the backlight with a uniform color, the microlens array layer may have different transmittance portions. A central portion of the microlens array layer may transmit more light and reflect less light than an edge portion of the microlens array layer.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: June 15, 2021
    Assignee: Apple Inc.
    Inventors: Rong Liu, Yu P. Sun, Victor H. Yin, Jun Qi, Ziruo Hong
  • Patent number: 11022840
    Abstract: An array of pixels in a display may be illuminated by a backlight having an array of light-emitting diodes in an array of respective cells. A reflector is used to reflect light from the light-emitting diodes through the array of pixels. Within the cells, the reflector has cross-sectional profiles that help distribute light emitted from the light-emitting diodes toward edges of the cells. A light diffuser layer for the backlight may have a partially reflective layer such as a thin-film interference filter with an angularly dependent transmission. Within each cell, the reflector may have cross-sectional profiles with portions that are parabolic or elliptical.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: June 1, 2021
    Assignee: Apple Inc.
    Inventors: Rong Liu, Yu P. Sun, Abdeslam Hafidi, Erik A. Zweigle, Jun Qi, Mingxia Gu, Victor H. Yin, Xiangtong Li, Yanming Li, Yi Huang, Ziruo Hong
  • Patent number: 11009745
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: May 18, 2021
    Assignee: Apple Inc.
    Inventors: Rong Liu, Daming Xu, Joshua A. Spechler, Jun Qi, Victor H. Yin, Ling Han, Juan He, Ziruo Hong, Mookyung Son, Heesang Suh, Xinyu Zhu
  • Patent number: 10969628
    Abstract: An electronic device may have a display with a backlight. The backlight provides backlight illumination for an array of pixels that is displaying images. The backlight may include an array of cells. Each cell may contain a light source with one or more light-emitting diodes and a cavity reflector that reflects light from the light source outwardly through a diffuser for use in forming the backlight illumination. The light sources may be mounted to a printed circuit. Support posts on the printed circuit may be used to maintain the diffuser at a fixed distance from the printed circuit. The support posts may have opposing first and second ends. The first ends may be attached to the diffuser with fixed connections such as adhesive connections. The second ends may be attached to the printed circuit using floating connections.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: April 6, 2021
    Assignee: Apple Inc.
    Inventors: Erik A. Zweigle, Yu P. Sun, Ziruo Hong, Victor H. Yin, Eric L. Benson, Rong Liu, Mingxia Gu, Robert J. Durand, Wr Jamarulan Wr Ramli
  • Patent number: 10901260
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: January 26, 2021
    Assignee: Apple Inc.
    Inventors: Rong Liu, Jun Qi, Victor H. Yin, Wei Lv, Joshua A. Spechler, Yu P. Sun, Suraj P. Gorkhali, Daming Xu, Edward H. Kang, Wenyong Zhu, Ziruo Hong, Xinyu Zhu, Ling Han, Mookyung Son, Pee Khiam So, Janos C. Keresztes, Chenhua You, Zhenyue Luo, Heesang Suh, Juan He, Hung Sheng Lin
  • Patent number: 10802336
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: October 13, 2020
    Assignee: Apple Inc.
    Inventors: Rong Liu, Ling Han, Daming Xu, Janos C. Keresztes, Joshua A. Spechler, Jun Qi, Victor H. Yin, Yu P. Sun, Ziruo Hong, Wei Lv, Suraj P. Gorkhali, Mookyung Son
  • Publication number: 20200292885
    Abstract: An electronic device may have a display with a backlight. The backlight provides backlight illumination for an array of pixels that is displaying images. The backlight may include an array of cells. Each cell may contain a light source with one or more light-emitting diodes and a cavity reflector that reflects light from the light source outwardly through a diffuser for use in forming the backlight illumination. The light sources may be mounted to a printed circuit. Support posts on the printed circuit may be used to maintain the diffuser at a fixed distance from the printed circuit. Sensors on the printed circuit may be used to measure separation distances between the printed circuit and diffuser. Adjustments to pixel gain profiles can be made based on the measured separation distances.
    Type: Application
    Filed: June 3, 2020
    Publication date: September 17, 2020
    Inventors: Rong Liu, Yu P. Sun, Erik A. Zweigle, Jun Qi, Victor H. Yin, Ziruo Hong, Sungwon Bae
  • Patent number: 10739638
    Abstract: An electronic device may have a display with a backlight. The backlight provides backlight illumination for an array of pixels that is displaying images. The backlight may include an array of cells. Each cell may contain a light source with one or more light-emitting diodes and a cavity reflector that reflects light from the light source outwardly through a diffuser for use in forming the backlight illumination. The light sources may be mounted to a printed circuit. Support posts on the printed circuit may be used to maintain the diffuser at a fixed distance from the printed circuit. Sensors on the printed circuit may be used to measure separation distances between the printed circuit and diffuser. Adjustments to pixel gain profiles can be made based on the measured separation distances.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: August 11, 2020
    Assignee: Apple Inc.
    Inventors: Rong Liu, Yu P. Sun, Erik A. Zweigle, Jun Qi, Victor H. Yin, Ziruo Hong, Sungwon Bae
  • Publication number: 20200019019
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include an array of light-emitting diodes and a light reflector that helps reflect light from the light-emitting diodes through the pixel array. A color conversion layer may be used to convert light from the light-emitting diodes from blue light to white light. A microlens array layer formed over the color conversion layer may spread the light from the color conversion layer to homogenize the light. To ensure light is emitted from the backlight with a uniform color, the microlens array layer may have different transmittance portions. A central portion of the microlens array layer may transmit more light and reflect less light than an edge portion of the microlens array layer.
    Type: Application
    Filed: May 24, 2019
    Publication date: January 16, 2020
    Inventors: Rong Liu, Yu P. Sun, Victor H. Yin, Jun Qi, Ziruo Hong
  • Publication number: 20190285950
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 19, 2019
    Inventors: Rong Liu, Daming Xu, Joshua A. Spechler, Jun Qi, Victor H. Yin, Ling Han, Juan He, Ziruo Hong, Mookyung Son, Heesang Suh, Xinyu Zhu
  • Publication number: 20190285944
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 19, 2019
    Inventors: Rong Liu, Jun Qi, Victor H. Yin, Wei Lv, Joshua A. Spechler, Yu P. Sun, Suraj P. Gorkhali, Daming Xu, Edward H. Kang, Wenyong Zhu, Ziruo Hong, Xinyu Zhu, Ling Han, Mookyung Son, Pee Khiam So, Janos C. Keresztes, Chenhua You, Zhenyue Luo, Heesang Suh, Juan He, Hung Sheng Lin