Patents by Inventor Min-Hyuk Choi

Min-Hyuk Choi 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: 20250189827
    Abstract: Systems and methods for enabling higher uniform performance and higher voltage operation for micro-OLED displays, manufacturing a meniscus lens including thermo-forming a functional optical layer and printing a lens element over the formed functional optical layer, using a hybrid process used to form a functionalized lens having a controlled surface profile, modeling the polarization properties of a human eye using a polymer thin film, and improving optical sparce eye-tracking by collecting an optical output signal from each detector through a corresponding optical fiber, and determining a gaze direction of a user's eye based on the electrical signal may be disclosed.
    Type: Application
    Filed: December 4, 2024
    Publication date: June 12, 2025
    Inventors: Gang Chen, Ahmet Tura, Suhui Lee, Gyungmin Kim, Tao-Hua Lee, Cheonhong Kim, Yung-Yu Hsu, Min Hyuk Choi, Amir Amirkhany, Yu Li, Rongzhi Huang, Sawyer Miller, Zhenye Li, Junren Wang, Redeen Alexandre E Mendoza Duran, Khalid Omer, Weihan Zhang, Mantas Zurauskas, Scott Charles McEldowney, Lu Lu, Brian Schowengerdt, Jun Yan, Michal Makowski
  • Patent number: 12266305
    Abstract: Embodiments relate to a display device including pixels that compensate a threshold voltage of a driving transistor, the pixels arranged in a plurality of rows. The gate of the driving transistor of each pixel is coupled to a pixel data switch and a reference voltage switch, configured to selectively provide pixel data provided via a data line and a reference voltage provided via a separate reference voltage line to the gate of the driving transistor, respectively. As pixel data and the reference voltage are provided to the driving transistor via separate lines, the compensation period of the pixel may overlap in time with a data writing period of pixels of a previous row of the display device, increasing the rate at which the display device is able to program the pixels of each row.
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: April 1, 2025
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Gyungmin Kim, Min Hyuk Choi, Takanori Shibasaki
  • Publication number: 20250072621
    Abstract: An automatic sofa is disclosed. The automatic sofa of the present disclosure includes: a main body having a back support body; a seat actuator disposed on the main body; and a seat unit disposed on the main body and connected to the seat actuator to move, wherein the seat actuator comprises a driving motor disposed on the main body, a sliding body disposed on the main body to be connected to the driving motor and configured to slide forward/backward with respect to the main body, a seat coupling body connected with the sliding body to move with the sliding body and coupling the seat unit thereto, and a rotary unit coupled at a first side to the main body, coupled at a second side to the seat coupling body, and configured to guide movement of the seat coupling body.
    Type: Application
    Filed: August 27, 2024
    Publication date: March 6, 2025
    Inventor: Min Hyuk CHOI
  • Publication number: 20250060588
    Abstract: A system includes a display element configured to output an image light. The system also includes an image combiner configured to guide the image light toward an eye-box region of the system. The system also includes a dimming device disposed at a side of the image combiner. The dimming device includes a dimming material layer including a mixture of liquid crystal (“LC”) molecules and dye molecules, and pretilt angles of the LC molecules and the dye molecules are configured with a predetermined variation in at least two opposite in-plane directions from a center to two opposite peripheries of the dimming material layer.
    Type: Application
    Filed: July 18, 2024
    Publication date: February 20, 2025
    Inventors: Hyunmin SONG, Min Hyuk CHOI, Yun-Han LEE, Michael ESCUTI, Zhiming ZHUANG
  • Publication number: 20250046301
    Abstract: A display device includes a diffusion layer providing a single well, an optical element configured to receive light and output the received image light including a concentric series of lens segments made up of active facets, and a waveguide having an in-coupling grating and a waveguide body optically coupled to the image light, where a polarizing component is disposed over an output surface of the optical element. A method to improve a yield of silicon backplane displays includes connecting a diode having a resolution to a backplane and repairing a defect on a pixel display area by dividing the pixel display area into at least one subcircuit, while improving geometry stylization transfer for 3D models of real-world environments. A method for suppressing crosstalk for user conversations includes receiving multiple speech signals captured by multiple microphones and generating directional data for the multiple speech signals based on spatial filtering.
    Type: Application
    Filed: July 29, 2024
    Publication date: February 6, 2025
    Inventors: Balasubramanian Sivakumar, Min Hyuk Choi, Gang Chen, Gyungmin Kim, Ahmet Tura, Hai Jung In, Weiwei Wang, Suhui Lee, Woong Hwang, Wanyue Song, Wai Sze Tiffany Lam, Wanli Chi, Nikolaos Sarafianos, Rakesh Ranjan, Alexander Sorkine Hornung, Seonghyeon Nam, Hyunyoung Jung, Ruiming Xie, Ju Lin, Niko Moritz, Frank Torsten Bernd Seide
  • Publication number: 20240377636
    Abstract: A head-mounted display including multiple displays tiled together is provided. A first display may include an active region and an inactive region. A second display may be aligned with the inactive region. The first display and the second display may have different resolutions and may present visual information with different display qualities based on their respective resolutions. For example, the first display may include a lower resolution than the second display. The inactive region may be centered in the first display, and the second display may be centered with respect to the first display. The head-mounted display may provide a continuous image(s) (or video(s)) with a high resolution on the second display, while providing the remainder of the image(s) on the low resolution first display. Based on the multiple displays being tiled, the multiple displays may present one or more images, or one or more videos, in a non-overlapping manner.
    Type: Application
    Filed: May 10, 2023
    Publication date: November 14, 2024
    Inventors: Cheonhong Kim, Min Hyuk Choi, Donghee Nam, Zhiming Zhuang
  • Patent number: 12087222
    Abstract: Embodiments relate to a display device with subpixels that share switch transistors that selectively connect sources of driving transistors to a high voltage source. Further, part of reset transistors or part of a select transistor may be shared across multiple subpixels. The reset transistor selectively connects an anode of an organic light emitting diode (OLED) to a low voltage source. The select transistor selectively passes through pixel data from a data line when a gate signal is received via a gate line. Driver transistors and capacitors of the subpixels are independent and not shared. In this way, the dimensions of the subpixels may be reduced and enable increase in the density of the pixels.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: September 10, 2024
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Gang Chen, Qianqian Wang, Min Hyuk Choi
  • Patent number: 12057067
    Abstract: Embodiments relate to a display device including pixels that compensate a threshold voltage of a driving transistor using the body effect. Pixel data for the driving transistor increases the source-bulk voltage of the driving transistor during a compensation period as a result of the body effect. A separate reference voltage is not received at the pixel for the purpose of compensating the threshold voltage of the driving transistor. The increased source-bulk voltage is then used in an emission period of the pixel to compensate for the threshold voltage of the driving transistor.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: August 6, 2024
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Qianqian Wang, Min Hyuk Choi, Gang Chen
  • Patent number: 12051384
    Abstract: A display may be foveated to reduce power consumption and increase row scan timing margin. In one embodiment, the display includes pixels, where a first set of the pixels are formed to have a low resolution and a second set of the pixels are formed to have a high resolution. A first subset of the first set of pixels is formed in a first pixel cell layout and includes anodes formed in a first anode layout. A second subset of the second set of pixels is formed in a second pixel layout and includes anodes formed in a second anode layout. In another embodiment, the display similarly includes pixels formed to have a low resolution or a high resolution. The pixels of this embodiment may be formed in the same anode layout.
    Type: Grant
    Filed: March 1, 2023
    Date of Patent: July 30, 2024
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Gyungmin Kim, Min Hyuk Choi, Takanori Shibasaki, Qianqian Wang
  • Patent number: 11910643
    Abstract: A method of manufacturing a display system includes forming a display element having a display active area over a silicon backplane, forming a display driver integrated circuit (DDIC), and bonding the display element to the display driver integrated circuit (DDIC). The display active area may include a light emitting diode such as an organic light emitting diode (OLED). Separately forming the display and the display circuitry may simplify formation of the OLED and allow for a higher density control interface between the display and the DDIC.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: February 20, 2024
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Min Hyuk Choi, Cheonhong Kim, Zhiming Zhuang
  • Publication number: 20230368737
    Abstract: Disclosed herein are methods and corresponding systems and devices for compensating burn-in in an electronic display. When the electronic display is divided into multiple regions, each region can have a separate compensation parameter associated with it. The compensation parameter can be determined through estimating pixel degradation based on how the region was used over the lifetime of the electronic display, for instance, the brightness of images previously displayed in the region. Although each region may have its own compensation parameter, burn-in compensation can be performed by selecting one compensation parameter from among a set of stored parameters for use as a global compensation parameter applied across all the display pixels, i.e., the entire display area. The global compensation parameter can be selected based on which region a user is looking at. Accordingly, a display system can include or be coupled to an eye-tracking unit that monitors eye movement.
    Type: Application
    Filed: July 24, 2023
    Publication date: November 16, 2023
    Inventors: Byung Geun JUN, Jeong-Keun AHN, Min Hyuk CHOI
  • Publication number: 20230317006
    Abstract: Embodiments relate to a display device including pixels that compensate a threshold voltage of a driving transistor, the pixels arranged in a plurality of rows. The gate of the driving transistor of each pixel is coupled to a pixel data switch and a reference voltage switch, configured to selectively provide pixel data provided via a data line and a reference voltage provided via a separate reference voltage line to the gate of the driving transistor, respectively. As pixel data and the reference voltage are provided to the driving transistor via separate lines, the compensation period of the pixel may overlap in time with a data writing period of pixels of a previous row of the display device, increasing the rate at which the display device is able to program the pixels of each row.
    Type: Application
    Filed: March 16, 2023
    Publication date: October 5, 2023
    Inventors: Gyungmin Kim, Min Hyuk Choi, Takanori Shibasaki
  • Publication number: 20230317000
    Abstract: Embodiments relate to a display device with subpixels that share switch transistors that selectively connect sources of driving transistors to a high voltage source. Further, part of reset transistors or part of a select transistor may be shared across multiple subpixels. The reset transistor selectively connects an anode of an organic light emitting diode (OLED) to a low voltage source. The select transistor selectively passes through pixel data from a data line when a gate signal is received via a gate line. Driver transistors and capacitors of the subpixels are independent and not shared. In this way, the dimensions of the subpixels may be reduced and enable increase in the density of the pixels.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: Gang Chen, Qianqian Wang, Min Hyuk Choi
  • Publication number: 20230317012
    Abstract: Embodiments relate to a display device including pixels that compensate a threshold voltage of a driving transistor using the body effect. Pixel data for the driving transistor increases the source-bulk voltage of the driving transistor during a compensation period as a result of the body effect. A separate reference voltage is not received at the pixel for the purpose of compensating the threshold voltage of the driving transistor. The increased source-bulk voltage is then used in an emission period of the pixel to compensate for the threshold voltage of the driving transistor.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: Qianqian Wang, Min Hyuk Choi, Gang Chen
  • Publication number: 20230282177
    Abstract: A display may be foveated to reduce power consumption and increase row scan timing margin. In one embodiment, the display includes pixels, where a first set of the pixels are formed to have a low resolution and a second set of the pixels are formed to have a high resolution. A first subset of the first set of pixels is formed in a first pixel cell layout and includes anodes formed in a first anode layout. A second subset of the second set of pixels is formed in a second pixel layout and includes anodes formed in a second anode layout. In another embodiment, the display similarly includes pixels formed to have a low resolution or a high resolution. The pixels of this embodiment may be formed in the same anode layout.
    Type: Application
    Filed: March 1, 2023
    Publication date: September 7, 2023
    Inventors: Gyungmin Kim, Min Hyuk Choi, Takanori Shibasaki, Qianqian Wang
  • Patent number: 11727892
    Abstract: Described is a system including a display, a display controller, and control logic communicatively coupled to the display. The display controller determines, based on coordinates of a focus point on the display, boundaries of a first image region and a second image region in an output image to be rendered. The focus point is determined through tracking an eye movement of a user viewing the display. The first image region has a higher resolution than the second image region. The display controller is configured to send image data together with control signals to the control logic. The control signals cause the control logic to render the output image on the display using the image data. As part of rendering the second image region, the control logic outputs a shared signal onto signal lines that are coupled to light sources in a group of adjacent rows or columns.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: August 15, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Qianqian Wang, Gang Chen, Min Hyuk Choi, Zhiming Zhuang
  • Patent number: 11698530
    Abstract: A method of leakage-compensated global illumination comprises obtaining position data for at least one of a head or an eye of a user of a display system by an application processor, rendering image data for an image frame by the application processor based on the position data, modifying the image data to compensate for leakage associated with a global illumination by a display of the display system, and sending the image data to a display driver circuit of the display system for displaying the image frame on the display through the global illumination.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: July 11, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Min Hyuk Choi, Zhiming Zhuang, Wonjae Choi
  • Patent number: 11686945
    Abstract: A method including determining a maximum luminance location of a display based on a field of view of an eye of a user of the display, and driving a plurality of light sources in the display based on locations of the plurality of light sources with respect to the maximum luminance location of the display. The plurality of light sources is controlled to have different luminance levels in different display zones corresponding to different zones on the retina of the eye of the user. In some examples, the display zones of the display system that have higher luminance levels can be dynamically changed based on the field of view or the gaze direction of the eye of the user.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: June 27, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Min Hyuk Choi, Zhiming Zhuang, Wonjae Choi, Cheonhong Kim
  • Patent number: 11682663
    Abstract: A display system includes (a) a display element having an organic light emitting diode-containing display active area disposed over a silicon backplane, (b) a display driver integrated circuit (DDIC) attached to the display element and electrically connected with the display active area, and (c) a thermal barrier disposed within the silicon backplane, where the thermal barrier is configured to inhibit heat flow through the silicon backplane and into the display active area.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: June 20, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Young Bae Kim, Donghee Nam, Min Hyuk Choi, Zhiming Zhuang
  • Patent number: 11666896
    Abstract: Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: June 6, 2023
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kyung Youl Baek, Soon Man Hong, Seung Sang Hwang, Chong Min Koo, Seon Joon Kim, Albert Lee, Jin Young Seo, Min Hyuk Choi, Yu Ri Lee, Sejin Kim, Do Xuan Huy, Que Thi Nguyen, Sangho Cho