Patents by Inventor Shengchang Cai

Shengchang Cai 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: 11929021
    Abstract: Systems and methods are provided for using an optical crosstalk compensation (OXTC) block to compensate for optical crosstalk resulted from a combination of viewing angle change across field of view (FoV), color filter (CF) crosstalk, and the OLED various angle color shift (VACS) of a foveated electronic display. One or more two-dimensional (2D) OXTC factor maps are used to determine OXTC factors for input image data of the OXTC block, and the OXTC factors are updated on a per frame basis. Offset values are determined using a parallel architecture and used to determine the OXTC factors. Compensation weights are used to determine weighted OXTC factors to improve processing efficiency. Output image data are obtained by applying the weighted OXTC factors to the input image data.
    Type: Grant
    Filed: June 2, 2023
    Date of Patent: March 12, 2024
    Assignee: Apple Inc.
    Inventors: Shereef Shehata, Jim C Chou, Sheng Zhang, Shengchang Cai
  • Publication number: 20230395019
    Abstract: Systems, devices, and methods for compensating for color shift, such as due to optical crosstalk, with a corrective lens are provided. Such a device may include an electronic display and image processing circuitry. The electronic display may include a display panel and a corrective lens. The image processing circuitry may process image data to correct for optical crosstalk of the electronic display when the display panel is viewed through the corrective lens.
    Type: Application
    Filed: June 3, 2023
    Publication date: December 7, 2023
    Inventors: Shengchang Cai, Enkhamgalan Dorjgotov, Chaohao Wang, Sheng Zhang, Giovanni Carbone, Igor Stamenov
  • Patent number: 11824072
    Abstract: Techniques for implementing and/or operating an electronic device that includes or utilizes a display panel. The display panel includes an organic light-emitting diode layer, an encapsulation layer disposed over the organic light-emitting diode layer, and a color filter layer disposed over the encapsulation layer. The color filter layer overhangs the organic light-emitting diode layer and comprises a first color filter cell of a first color component sub-pixel that at least partially overlaps an organic light-emitting diode of a second color component sub-pixel that is a different color compared to the first color component sub-pixel.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: November 21, 2023
    Assignee: Apple Inc.
    Inventors: Shengchang Cai, Enkhamgalan Dorjgotov, Chaohao Wang, Sheng Zhang, Giovanni Carbone, Igor Stamenov
  • Patent number: 11741918
    Abstract: It may be desirable to implement a vignetting effect in a display. The vignetting effect causes the display to have a light-emitting area that gradually fades to a black, non-light-emitting area. The vignetting effect allows for the size and shape of the light-emitting area to be controlled while still being aesthetically pleasing to a viewer. To implement a vignetting mask for the vignetting effect, control circuitry in the electronic device may apply dimming factors to image data for the display. To avoid artifacts caused by the vignetting mask, an initial array of dimming factors for implementing the vignetting mask may have a range between ?0.5 and 1.5. After upsampling, clamping may be performed to reduce the range of the dimming factors to between 0 and 1. Ultimately, the dimming factors are applied to image data for each frame to implement the vignetting mask in each frame.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: August 29, 2023
    Assignee: Apple Inc.
    Inventors: Shengchang Cai, Sheng Zhang, Sterling G. Orsten, Shereef Shehata
  • Patent number: 11735612
    Abstract: Techniques for implementing and/or operating an electronic device that includes or utilizes a display panel. The display panel includes an organic light-emitting diode layer, an encapsulation layer disposed over the organic light-emitting diode layer, and a color filter layer disposed over the encapsulation layer. The color filter layer overhangs the organic light-emitting diode layer and comprises a first color filter cell of a first color component sub-pixel that at least partially overlaps an organic light-emitting diode of a second color component sub-pixel that is a different color compared to the first color component sub-pixel.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: August 22, 2023
    Assignee: Apple Inc.
    Inventors: Shengchang Cai, Enkhamgalan Dorjgotov, Chaohao Wang, Sheng Zhang, Giovanni Carbone, Igor Stamenov
  • Patent number: 11705029
    Abstract: Systems and methods are provided to compensate image data for display on a curved display. A pixel uniformity compensation factor may be applied based on a pixel uniformity compensation factor map that is calibrated to the display panel while the display panel has a flat shape, and a panel curvature compensation factor may be applied when the image content is to be displayed while the display panel has a curved shape. The panel curvature compensation factor may be based on a panel curvature compensation factor map that is calibrated to the display panel after the display panel is bent from the flat shape to the curved shape.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: July 18, 2023
    Assignee: Apple Inc.
    Inventors: Sheng Zhang, Shengchang Cai, ByoungSuk Kim, Yi Huang
  • Patent number: 11626047
    Abstract: Embodiments disclosed herein provide systems and methods for testing and compensating for pixel degradation in an electronic display based on current and voltage values sensed in a reference array. An electronic display includes an active array, a reference array, and sensing circuitry. A compensation manager obtains current data values of the reference array from the sensing circuitry. The compensation manager generates a current-voltage curve based on the current data and adjusts the current-voltage curve to compensate for variations in temperature and/or pixel brightness. In this way, the compensation manager may improve performance of the electronic display by, for example, by reducing visible anomalies.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: April 11, 2023
    Assignee: Apple Inc.
    Inventors: Shengchang Cai, Hasan Akyol, Xuebei Yang, Sheng Zhang
  • Publication number: 20210098535
    Abstract: Techniques for implementing and/or operating an electronic device that includes or utilizes a display panel. The display panel includes an organic light-emitting diode layer, an encapsulation layer disposed over the organic light-emitting diode layer, and a color filter layer disposed over the encapsulation layer. The color filter layer overhangs the organic light-emitting diode layer and comprises a first color filter cell of a first color component sub-pixel that at least partially overlaps an organic light-emitting diode of a second color component sub-pixel that is a different color compared to the first color component sub-pixel.
    Type: Application
    Filed: August 26, 2020
    Publication date: April 1, 2021
    Inventors: Shengchang Cai, Enkhamgalan Dorjgotov, Chaohao Wang, Sheng Zhang, Giovanni Carbone, Igor Stamenov
  • Publication number: 20210098520
    Abstract: Techniques for implementing and/or operating an electronic device that includes or utilizes a display panel. The display panel includes an organic light-emitting diode layer, an encapsulation layer disposed over the organic light-emitting diode layer, and a color filter layer disposed over the encapsulation layer. The color filter layer overhangs the organic light-emitting diode layer and comprises a first color filter cell of a first color component sub-pixel that at least partially overlaps an organic light-emitting diode of a second color component sub-pixel that is a different color compared to the first color component sub-pixel.
    Type: Application
    Filed: August 26, 2020
    Publication date: April 1, 2021
    Inventors: Shengchang Cai, Enkhamgalan Dorjgotov, Chaohao Wang, Sheng Zhang, Giovanni Carbone, Igor Stamenov