Patents by Inventor Hao-Lin Chiu

Hao-Lin Chiu 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: 20220059018
    Abstract: A light emitting diode (LED) display can calculate a common voltage charge of a line of pixels in the LED display, the common voltage charge comprising a difference between a first line of pixels and a second line of pixels. If the calculated common voltage charge exceeds a predetermined threshold, a toggle matrix can be generated for the line of pixels. The toggle matrix can include a matrix of charge values generated by calculating a difference in charge values for each subpixel a first line of subpixels with each subpixel a second line of subpixels. The LED display can identify one or more regions of subpixels exhibiting the predetermined toggle pattern in the toggle matrix. The LED display can generate a voltage correction charge to apply to affected regions of the display. Alternatively, the subpixels or pixels could be swapped with adjacent pixels to reduce toggling or settling error.
    Type: Application
    Filed: August 18, 2021
    Publication date: February 24, 2022
    Inventors: Shatam Agarwal, Sean C. Chang, Hao-Lin Chiu, Fenghua Zheng, Pierre-Yves Emelie, Yao Chen, Marc Albrecht, Mingxia Gu, Jun Qi, Wei Chen
  • Patent number: 11087710
    Abstract: A display includes a plurality of pixels grouped into a plurality of lines of pixels. Each line of pixels of the plurality of lines comprises a group of pixels of the plurality of pixels that are coupled to a common scan line as well and that are coupled to different data lines to individually activate each pixel of the group of pixels. The display also includes a common voltage (VCOM) driving circuit configured to receive a waveform and drive the waveform to the display as a VCOM having a value tailored to an individually activated pixel of the group of pixels.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 10, 2021
    Assignee: Apple Inc.
    Inventors: Pei-Yu Hou, Yang Li, Hao-Lin Chiu
  • Patent number: 10955947
    Abstract: A touch sensor panel comprising a first touch node electrode of a plurality of touch node electrodes, the first touch node electrode coupled to a first sense connection comprising a first set of traces, the first sense connection configured to have a first resistance per unit length that varies along a length of the first sense connection, and a second touch node electrode of the plurality of touch node electrodes, the second touch node electrode coupled to a second sense connection comprising a second set of traces, the second sense connection configured to have a second resistance per unit length that varies along a length of the second sense connection differently than the first resistance per unit length varies along the length of the first sense connection. An effective resistance of the first sense connection and the second sense connection are equal.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: March 23, 2021
    Assignee: Apple Inc.
    Inventors: Patrick Bennett, Byung Duk Yang, Chun-Yao Huang, Hao-Lin Chiu, Ivan Knez, Peien Chang, Rungrot Kitsomboonloha, Shih-Chang Chang, Shinya Ono, Szuhsien Lee
  • Patent number: 10923012
    Abstract: An electronic device may include a display. The display may include display driver circuitry that is configured to provide image data to columns of pixels and gate driver circuitry that is configured to provide control signals to rows of pixels. The display may be operable at a native refresh rate that is equal to the highest refresh rate at which the display has full resolution. The display may also be operable in a high refresh rate mode with a high refresh rate that is twice (or some other scaling factor greater than) the native refresh rate. To enable operation at the high refresh rate mode, vertical resolution of the display may be sacrificed. In other words, rows of pixels may be grouped together into effective rows that are then scanned in sequence. The gate driver circuitry may be formed as thin-film transistor circuitry or from gate driver integrated circuits.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Jiaxi Hu, Hao-Lin Chiu, Shatam Agarwal, Kwang Soon Park, Joonggun Lee, Kyung Wook Kim, Shih Chang Chang, Fenghua Zheng
  • Patent number: 10839733
    Abstract: A display may have an array of pixels arranged in rows and columns. Display driver circuitry may be provided along an edge of the display. Data lines that are associated with columns of the pixels may be used to distribute data from the display driver circuitry to the pixels. Gate lines in the display may each have a horizontal straight portion that extends along a respective row of the pixels and may each have one or more non-horizontal segments such as zigzag segments. The non-horizontal portion of each gate line may be connected to the horizontal straight portion of the gate line by a via. The non-horizontal portions may each have portions that are overlapped by portions of the data lines. Dummy gate line structures may be provided on the display that are not coupled to any of the pixels in the display.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: November 17, 2020
    Assignee: Apple Inc.
    Inventors: Shinya Ono, Chun-Yao Huang, Hao-Lin Chiu, Ivan Knez, Patrick B. Bennett, Shih Chang Chang, Byung Duk Yang
  • Patent number: 10754212
    Abstract: A display may have pixels configured to display images. The pixels may be formed from thin-film transistor circuitry on a substrate. Color filter elements formed from colored polymer such as colored photoimageable polymer may be formed on the substrate. A black matrix formed from black photoimageable polymer may have an array of openings. The colored polymer may have first portions that overlap the black matrix and second portions in the openings that form the color filter elements. In some portions of the pixels, the thin-film transistor circuitry may be interposed between the first portions of the colored polymer and the black matrix. In other portions of the pixels, data lines may be formed that are overlapped by the black matrix and that are interposed between the first portions of the colored polymer and the black matrix.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: August 25, 2020
    Assignee: Apple Inc.
    Inventors: Byung Duk Yang, Hao-Lin Chiu, Kwang Soon Park, Kyung Wook Kim, Sai-Chang Liu, Shih Chang Chang
  • Publication number: 20190228732
    Abstract: A display includes a plurality of pixels grouped into a plurality of lines of pixels. Each line of pixels of the plurality of lines comprises a group of pixels of the plurality of pixels that are coupled to a common scan line as well and that are coupled to different data lines to individually activate each pixel of the group of pixels. The display also includes a common voltage (VCOM) driving circuit configured to receive a waveform and drive the waveform to the display as a VCOM having a value tailored to an individually activated pixel of the group of pixels.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 25, 2019
    Inventors: Pei-Yu Hou, Yang Li, Hao-Lin Chiu
  • Publication number: 20190086720
    Abstract: A display may have pixels configured to display images. The pixels may be formed from thin-film transistor circuitry on a substrate. Color filter elements formed from colored polymer such as colored photoimageable polymer may be formed on the substrate. A black matrix formed from black photoimageable polymer may have an array of openings. The colored polymer may have first portions that overlap the black matrix and second portions in the openings that form the color filter elements. In some portions of the pixels, the thin-film transistor circuitry may be interposed between the first portions of the colored polymer and the black matrix. In other portions of the pixels, data lines may be formed that are overlapped by the black matrix and that are interposed between the first portions of the colored polymer and the black matrix.
    Type: Application
    Filed: July 20, 2018
    Publication date: March 21, 2019
    Inventors: Byung Duk Yang, Hao-Lin Chiu, Kwang Soon Park, Kyung Wook Kim, Sai-Chang Liu, Shih Chang Chang
  • Patent number: 10210830
    Abstract: A display may have an array of pixels arranged in rows and columns. Each pixel may have a transistor for controlling the amount of output light associated with that pixel. The transistors may be thin-film transistors having active areas, first and second source-drain terminals, and gates. Gate lines may be used to distribute gate control signals to the gates of the transistors in each row. Data lines that run perpendicular to the gate lines may be used to distribute image data along columns of pixels. The gate lines may be connected to gate line extensions that run parallel to the data lines. The data lines may each overlap a respective one of the gate line extensions. Vias may be used to connect the gate line extensions to the gate lines. The gate line extensions may all have the same length.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: February 19, 2019
    Assignee: Apple Inc.
    Inventors: Byung Duk Yang, Szu-Hsien Lee, Kyung-Wook Kim, Shih Chang Chang, Chun-Yao Huang, Hao-Lin Chiu
  • Patent number: 10170072
    Abstract: A display device may include pixels and source lines that provide data line signals to the pixels. The display device may also include gate lines that provide gate signals to switches associated with the pixels. The display device may also include vertical gate lines disposed generally parallel to the source lines and coupled to the gate lines at cross point nodes. The display device may also include compensation lines, such that each compensation line is proximate to a respective vertical gate line. The compensation lines may transmit compensation signals having an opposite polarity as compared to respective gate signals to reduce or eliminate a kickback voltage on at least one of the plurality of pixels.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: January 1, 2019
    Assignee: Apple Inc.
    Inventors: Byung Duk Yang, Chun-Yao Huang, Kyung Wook Kim, Patrick B. Bennett, Shih Chang Chang, Wonjae Choi, Hao-Lin Chiu, Kwang Soon Park, Xinyu Zhu
  • Patent number: 10157561
    Abstract: A display may have a first stage such as a color liquid crystal display stage and a second stage such as a monochromatic liquid crystal display stage that are coupled in tandem so that light from a backlight passes through both stages. The pixel pitch of the second stage may be greater than the pixel pitch of the first stage to ease alignment tolerances and reduce image processing complexity. The first stage may be provided with straight black masking strips, whereas the second stage may be provided with angled zigzagging black masking strips. The angle of the zigzagging black masking strips and the ratio of the pixel pitch of the second stage to that of the first stage may be selected to maximize optical transmittance while minimizing Moire effects.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: December 18, 2018
    Assignee: Apple Inc.
    Inventors: Jin Yan, Young Cheol Yang, Jun Jiang, Hao-Lin Chiu, Young-Jik Jo, Cheng Chen
  • Patent number: 10008139
    Abstract: A display device may include a plurality of pixels, a plurality of source lines that may provide a plurality of data line signals to the plurality of pixels, a plurality of gate lines that may provide a plurality of gate signals to a plurality of switches associated with the plurality of pixels, and a plurality of voltage gate lines disposed parallel to the plurality of source lines and coupled to the plurality of gate lines at a plurality of cross point nodes. The plurality of cross point nodes are positioned in a pseudo random order across the display device.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: June 26, 2018
    Assignee: APPLE INC.
    Inventors: Howard H. Tang, Wei Chen, Paolo Sacchetto, Chaohao Wang, Chun-Yao Huang, Hao-Lin Chiu
  • Publication number: 20180032171
    Abstract: A touch sensor panel comprising a first touch node electrode of a plurality of touch node electrodes, the first touch node electrode coupled to a first sense connection comprising a first set of traces, the first sense connection configured to have a first resistance per unit length that varies along a length of the first sense connection, and a second touch node electrode of the plurality of touch node electrodes, the second touch node electrode coupled to a second sense connection comprising a second set of traces, the second sense connection configured to have a second resistance per unit length that varies along a length of the second sense connection differently than the first resistance per unit length varies along the length of the first sense connection. An effective resistance of the first sense connection and the second sense connection are equal.
    Type: Application
    Filed: April 21, 2017
    Publication date: February 1, 2018
    Inventors: Patrick BENNETT, Byung Duk YANG, Chun-Yao HUANG, Hao-Lin CHIU, Ivan KNEZ, Peien CHANG, Rungrot KITSOMBOONLOHA, Shih-Chang CHANG, Shinya ONO, Szuhsien LEE
  • Publication number: 20170294172
    Abstract: A display may have an array of pixels arranged in rows and columns. Each pixel may have a transistor for controlling the amount of output light associated with that pixel. The transistors may be thin-film transistors having active areas, first and second source-drain terminals, and gates. Gate lines may be used to distribute gate control signals to the gates of the transistors in each row. Data lines that run perpendicular to the gate lines may be used to distribute image data along columns of pixels. The gate lines may be connected to gate line extensions that run parallel to the data lines. The data lines may each overlap a respective one of the gate line extensions. Vias may be used to connect the gate line extensions to the gate lines. The gate line extensions may all have the same length.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 12, 2017
    Inventors: Byung Duk Yang, Szu-Hsien Lee, Kyung-Wook Kim, Shih Chang Chang, Chun-Yao Huang, Hao-Lin Chiu
  • Patent number: 9727167
    Abstract: A display may have an array of pixels arranged in rows and columns. Each pixel may have a transistor for controlling the amount of output light associated with that pixel. The transistors may be thin-film transistors having active areas, first and second source-drain terminals, and gates. Gate lines may be used to distribute gate control signals to the gates of the transistors in each row. Data lines that run perpendicular to the gate lines may be used to distribute image data along columns of pixels. The gate lines may be connected to gate line extensions that run parallel to the data lines. The data lines may each overlap a respective one of the gate line extensions. Vias may be used to connect the gate line extensions to the gate lines. The gate line extensions may all have the same length.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: August 8, 2017
    Assignee: Apple Inc.
    Inventors: Byung Duk Yang, Szu-Hsien Lee, Kyung Wook Kim, Shih Chang Chang, Chun-Yao Huang, Hao-Lin Chiu
  • Patent number: 9606382
    Abstract: A display has an array of pixels controlled by display driver circuitry. Gate driver circuitry supplies gate line signals to rows of the pixels. The pixels may be liquid crystal display pixels. Each pixel may have a common electrode voltage terminal. The display may have a transparent conductive film that forms a common electrode voltage layer that overlaps that array and that is shorted to the common electrode voltage terminals of the pixels. Metal common electrode voltage lines may run across the transparent conductive film to reduce resistance. Metal common electrode voltage paths that are coupled to the metal common electrode voltage lines may run along the left and right edge of the display. Common electrode voltage compensation circuits may receive feedback from the metal common electrode voltage paths. There may be two or more common electrode voltage compensation circuits for both the left and right edges of the display.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: March 28, 2017
    Assignee: Apple Inc.
    Inventors: Young-Jik Jo, Chun-Yao Huang, Hao-Lin Chiu, Kwang Soon Park, Shih Chang Chang
  • Publication number: 20170084214
    Abstract: A display may have an array of pixels arranged in rows and columns. Display driver circuitry may be provided along an edge of the display. Data lines that are associated with columns of the pixels may be used to distribute data from the display driver circuitry to the pixels. Gate lines in the display may each have a horizontal straight portion that extends along a respective row of the pixels and may each have one or more non-horizontal segments such as zigzag segments. The non-horizontal portion of each gate line may be connected to the horizontal straight portion of the gate line by a via. The non-horizontal portions may each have portions that are overlapped by portions of the data lines. Dummy gate line structures may be provided on the display that are not coupled to any of the pixels in the display.
    Type: Application
    Filed: May 24, 2016
    Publication date: March 23, 2017
    Inventors: Shinya Ono, Chun-Yao Huang, Hao-Lin Chiu, Ivan Knez, Patrick B. Bennett, Shih Chang Chang, Byung Duk Yang
  • Publication number: 20170084247
    Abstract: A display device may include pixels and source lines that provide data line signals to the pixels. The display device may also include gate lines that provide gate signals to switches associated with the pixels. The display device may also include vertical gate lines disposed generally parallel to the source lines and coupled to the gate lines at cross point nodes. The display device may also include compensation lines, such that each compensation line is proximate to a respective vertical gate line. The compensation lines may transmit compensation signals having an opposite polarity as compared to respective gate signals to reduce or eliminate a kickback voltage on at least one of the plurality of pixels.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 23, 2017
    Inventors: Byung Duk Yang, Chun-Yao Huang, Kyung Wook Kim, Patrick B. Bennett, Shih Chang Chang, Wonjae Choi, Hao-Lin Chiu, Kwang Soon Park, Xinyu Zhu
  • Publication number: 20170061837
    Abstract: A display device may include a plurality of pixels, a plurality of source lines that may provide a plurality of data line signals to the plurality of pixels, a plurality of gate lines that may provide a plurality of gate signals to a plurality of switches associated with the plurality of pixels, and a plurality of voltage gate lines disposed parallel to the plurality of source lines and coupled to the plurality of gate lines at a plurality of cross point nodes. The plurality of cross point nodes are positioned in a pseudo random order across the display device.
    Type: Application
    Filed: January 14, 2016
    Publication date: March 2, 2017
    Inventors: Howard H. Tang, Wei Chen, Paolo Sacchetto, Chaohao Wang, Chun-Yao Huang, Hao-Lin Chiu
  • Publication number: 20160334658
    Abstract: A display has an array of pixels controlled by display driver circuitry. Gate driver circuitry supplies gate line signals to rows of the pixels. The pixels may be liquid crystal display pixels. Each pixel may have a common electrode voltage terminal. The display may have a transparent conductive film that forms a common electrode voltage layer that overlaps that array and that is shorted to the common electrode voltage terminals of the pixels. Metal common electrode voltage lines may run across the transparent conductive film to reduce resistance. Metal common electrode voltage paths that are coupled to the metal common electrode voltage lines may run along the left and right edge of the display. Common electrode voltage compensation circuits may receive feedback from the metal common electrode voltage paths. There may be two or more common electrode voltage compensation circuits for both the left and right edges of the display.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 17, 2016
    Inventors: Young-Jik Jo, Chun-Yao Huang, Hao-Lin Chiu, Kwang Soon Park, Shih Chang Chang