Patents by Inventor Sun-Young Chang

Sun-Young Chang 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: 20240143173
    Abstract: A memory module includes a memory array, an interface and a controller. The memory array includes an array of memory cells and is configured as a dual in-line memory module (DIMM). The DIMM includes a plurality of connections that have been repurposed from a standard DIMM pin out configuration to interface operational status of the memory device to a host device. The interface is coupled to the memory array and the plurality of connections of the DIMM to interface the memory array to the host device. The controller is coupled to the memory array and the interface and controls at least one of a refresh operation of the memory array, control an error-correction operation of the memory array, control a memory scrubbing operation of the memory array, and control a wear-level control operation of the array, and the controller to interface with the host device.
    Type: Application
    Filed: January 9, 2024
    Publication date: May 2, 2024
    Inventors: Mu-Tien CHANG, Dimin NIU, Hongzhong ZHENG, Sun Young LIM, Indong KIM, Jangseok CHOI
  • Publication number: 20240130207
    Abstract: A display device includes a display panel, a filler layer, a reflection control layer, a plurality of light-blocking patterns, and an encapsulation substrate. The low reflection layer is disposed on the display panel. The filler layer is disposed on the display panel. The reflection control layer includes a first catalyst and is disposed on the filler layer. The plurality of light-blocking patterns is disposed between the filler layer and the reflection control layer. The encapsulation substrate is disposed on the reflection control layer.
    Type: Application
    Filed: May 1, 2023
    Publication date: April 18, 2024
    Inventors: HYEBEOM SHIN, DAEWON KIM, SU JEONG KIM, JONGHO SON, KYUNGHEE LEE, JINHYEONG LEE, SUN-YOUNG CHANG
  • Patent number: 11955076
    Abstract: An example method includes estimating, based on content to be displayed at a display of a mobile computing device at a future time, an amount of power to be used by the display at the future time; selecting, based on the estimated power level, a power converter of a plurality of power converters of the mobile computing device, each of the plurality of power converters optimized for a different output power range; and causing electrical power from the selected power converter to be supplied to the display at the future time.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: April 9, 2024
    Assignee: Google LLC
    Inventors: Ji Hoon Lee, Sun-il Chang, Sang Young Youn
  • Patent number: 11948520
    Abstract: PWM-frame rate misalignment is mitigated through implementation of a discrete variable refresh rate (VRR) scheme. A target frame rate is limited to a frame rate selected from only those frame rates that facilitate alignment of each frame period to a specified edge of a PWM cycle of a brightness control signal of a display panel. This alignment results in each frame period at the selected frame rate starting at a same point in a corresponding PWM cycle and ending at a same point in a corresponding PWM cycle to help ensure a constant effective duty cycle across each successive frame period, which in turn mitigates perception of flicker that otherwise would arise. Further, the discrete VRR scheme can employ a compensation mode for compensating for the delay in rendering or otherwise obtaining a frame for display so as to maintain a consistent duty cycle in the brightness control signal.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: April 2, 2024
    Assignee: GOOGLE LLC
    Inventors: Sang Young Youn, Sun-il Chang, Wonjae Choi, Sangmoo Choi
  • Patent number: 11929018
    Abstract: A frame generation subsystem renders a sequence of frames and a display control subsystem provides a brightness control signal configured to control a brightness of frames displayed at a display panel via pulse width modulation (PWM) of the brightness control signal and determines a deviation in a duty cycle of a first PWM period of the brightness control signal from a default duty cycle resulting from a delayed rendering of a frame. The display control subsystem adjusts a duty cycle of at least a second PWM period to compensate for the deviation in the duty cycle of the first PWM period. The resulting average duty cycle of the brightness control signal over the two frame periods is approximately equal to a default duty cycle and thereby mitigates viewable flicker resulting from the duty cycle change caused by the delayed rendering.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: March 12, 2024
    Assignee: GOOGLE LLC
    Inventors: Sang Young Youn, Sun-il Chang, Wonjae Choi, Hyunchul Kim
  • Publication number: 20240074296
    Abstract: A display panel includes a first substrate including a display area, in which a plurality of pixel areas is arranged, and a non-display area around the display area, a second substrate disposed opposite to the first substrate, a light emitting array disposed on the first substrate and including a plurality of light emitting elements corresponding to the plurality of pixel areas, a sealing layer disposed in the non-display area between the first substrate and the second substrate and bonding the first substrate and the second substrate to each other, a vacuum layer sealed by the sealing layer and defined between the light emitting array and the second substrate, and a reflection adjustment layer disposed on the second substrate and absorbing a portion of external light, where the reflection adjustment layer includes a plurality of protrusions protruding toward the light emitting array and exposed to the vacuum layer.
    Type: Application
    Filed: April 12, 2023
    Publication date: February 29, 2024
    Inventors: Jong Ho SON, Dae Won KIM, Hye Beom SHIN, Jin Hyeong LEE, Sun Young CHANG
  • Publication number: 20230257550
    Abstract: A photosensitive resin composition and a display device including the same are provided.
    Type: Application
    Filed: October 6, 2022
    Publication date: August 17, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyung Guen YOON, Suk Hoon KANG, Hyung Jun YU, Sun Young CHANG
  • Patent number: 11709404
    Abstract: A display device includes a base layer, a first pixel transistor, a first gate line, a first data line electrically connected to the first pixel transistor, a first pixel electrode electrically connected to the first pixel transistor and overlapping the first data line in a plan view, and a porous layer. The porous layer is disposed between the first data line and the first pixel electrode and includes a matrix including a polymer resin and a plurality of void portions defined in the matrix. The display device is capable of displaying a sharp image because the porous layer alleviates or prevents a crosstalk between the first data line and the first pixel electrode.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: July 25, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyelim Jang, Young Gu Kim, Jiyun Park, Jongho Son, Jongmin Ok, Sun-Young Chang, Baekkyun Jeon, Kyungseon Tak
  • Patent number: 11650363
    Abstract: A low refractive layer includes a plurality of hollow inorganic particles and a matrix between the hollow inorganic particles, and capable of exhibiting a good refractive index and improved durability by enhancing the weight ratio of the hollow inorganic particles to the matrix. An electronic device according to an embodiment of the inventive concept including the low refractive layer may exhibit improved reliability and good display quality.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: May 16, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taekjoon Lee, Young gu Kim, Sun-young Chang, Jongmin Ok, Hyelim Jang, Jin-soo Jung, Kyungseon Tak
  • Patent number: 11614654
    Abstract: Provided is an optical member. The optical member includes a color filter member including quantum dots and a low-refractive index layer below the color filter member and including a first hollow particle and a second hollow particle. The first hollow particle may have a particle size different from a particle size of the second hollow particle.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: March 28, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-soo Jung, Younggu Kim, Taekjoon Lee, Jongmin Ok, Sun-young Chang, Hyelim Jang, Baekkyun Jeon, Kyungseon Tak
  • Patent number: 11609371
    Abstract: An electronic device includes a light source member configured to provide a first light, a color conversion member disposed on the light source member and including a first conversion material that converts the first light into a second light and a second conversion material that converts the first light into a third light, and a low-refractive index layer disposed on the light source member and disposed on at least one of upper and lower portions of the color conversion member. The low-refractive index layer includes a matrix part, a plurality of hollow inorganic particles dispersed in the matrix part, and a plurality of void parts defined by the matrix part.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: March 21, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyungseon Tak, Younggu Kim, Taekjoon Lee, Sun-Young Chang, Jin-Soo Jung, Jongmin Ok, Hyelim Jang, Baekkyun Jeon
  • Publication number: 20230078207
    Abstract: A display device includes a display area including a first light-emitting area and a second light-emitting area; a peripheral area adjacent to the display area; pixels which emit incident light; an encapsulation layer covering the pixels; a first color-converting pattern corresponding to the first light-emitting area and having a refractivity; a transmission pattern corresponding to the second light-emitting area and through which the incident light is transmitted; a low refractivity layer is in the display area and facing the encapsulation layer with each of the first color-converting pattern and the transmission pattern therebetween, the low refractivity layer including: a resin and a hollow particle which define a refractivity lower than the refractivity of the first color-converting pattern; and a first dam structure in the peripheral area and spaced apart from the display area, the first dam structure and the transmission pattern being portions of a same material layer.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 16, 2023
    Inventors: Young Gu KIM, Ji Yun PARK, Jong Ho SON, Jong Min OK, Sun-Young CHANG, Hye Lim JANG, Baek Kyun JEON, Kyung Seon TAK
  • Publication number: 20220407041
    Abstract: A method of manufacturing a display device includes providing a mother substrate including a first cell region, a second cell region, and a peripheral region. First alignment keys arranged in a first direction in the peripheral region on the mother substrate is formed such that the first alignment keys are adjacent to a first side portion of each of first and second light emitting structures, while forming the first and second light emitting structures in the first and second cell regions on the mother substrate, respectively. A photoresist is formed in a second direction on the first and second light emitting structures by using a coater such that the photoresist does not to overlap the first alignment keys. The mother substrate is rotated at a preset angle. A light is irradiated to the photoresist by moving an exposer in a direction in which the first alignment keys are arranged.
    Type: Application
    Filed: March 17, 2022
    Publication date: December 22, 2022
    Inventors: SUN-YOUNG CHANG, SUK HOON KANG, JEONGSOO KIM, HYUNGJUN YU, HYUNGGUEN YOON
  • Patent number: 11532674
    Abstract: A display device includes a display area including a first light-emitting area and a second light-emitting area; a peripheral area adjacent to the display area; pixels which emit incident light; an encapsulation layer covering the pixels; a first color-converting pattern corresponding to the first light-emitting area and having a refractivity; a transmission pattern corresponding to the second light-emitting area and through which the incident light is transmitted; a low refractivity layer is in the display area and facing the encapsulation layer with each of the first color-converting pattern and the transmission pattern therebetween, the low refractivity layer including: a resin and a hollow particle which define a refractivity lower than the refractivity of the first color-converting pattern; and a first dam structure in the peripheral area and spaced apart from the display area, the first dam structure and the transmission pattern being portions of a same material layer.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: December 20, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Gu Kim, Ji Yun Park, Jong Ho Son, Jong Min Ok, Sun-Young Chang, Hye Lim Jang, Baek Kyun Jeon, Kyung Seon Tak
  • Publication number: 20220123247
    Abstract: An electronic device includes a light source member configured to provide a first light, a color conversion member disposed on the light source member and including a first conversion material that converts the first light into a second light and a second conversion material that converts the first light into a third light, and a low-refractive index layer disposed on the light source member and disposed on at least one of upper and lower portions of the color conversion member. The low-refractive index layer includes a matrix part, a plurality of hollow inorganic particles dispersed in the matrix part, and a plurality of void parts defined by the matrix part.
    Type: Application
    Filed: December 23, 2021
    Publication date: April 21, 2022
    Inventors: Kyungseon TAK, YOUNGGU KIM, TAEKJOON LEE, SUN-YOUNG CHANG, JIN-SOO JUNG, JONGMIN OK, HYELIM JANG, BAEKKYUN JEON
  • Patent number: 11307461
    Abstract: Provided is a display device. The display device includes a liquid crystal display panel and an optical film disposed above the liquid crystal display panel, the optical film comprising a first pattern layer having a first refractive index and a second pattern layer having a second refractive index different from the first refractive index and disposed on the first pattern layer. The first pattern layer includes a first base part and a plurality of first protrusions. Each of the first protrusions includes a bottom surface adjacent to the first base part, an upper surface facing the bottom surface, and side surfaces between the bottom surface and the upper surface. Each of the side surfaces is perpendicular to the bottom surface and the upper surface.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: April 19, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jongho Son, Young Gu Kim, Jiyun Park, Jongmin Ok, Sun-Young Chang, Hyelim Jang, Baekkyun Jeon, Kyungseon Tak
  • Patent number: 11281045
    Abstract: Provided are a wavelength conversion layer and a display device. A color conversion element comprises: a wavelength conversion layer; one or more low refractive layers which are disposed on and/or under the wavelength conversion layer and have a lower refractive index than the wavelength conversion layer; and one or more capping layers which are disposed between the wavelength conversion layer and the low refractive layers and/or on a surface opposite to a surface of each of the low refractive layers which faces the wavelength conversion layer.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: March 22, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taek Joon Lee, Young Gu Kim, Keun Chan Oh, Sun Young Chang, Hye Lim Jang, Baek Kyun Jeon, Jin Soo Jung, Kyung Seon Tak, Jae Jin Lyu, Moon Jung Baek
  • Patent number: 11281042
    Abstract: An optical film may include a first pattern layer having a first refractive index and including a base portion and a plurality of protrusions on the base portion x, and a second pattern layer disposed on the first pattern layer and having a second refractive index different from the first refractive index. Each of the protrusions may include n sub-protrusions (n is an integer of 2 or greater), which are stacked in a thickness direction of the base portion. Each of the n sub-protrusions may have a quadrilateral shape. A side surface of the protrusion defined by the n sub-protrusions may include at least one step portion. The optical film improves display quality of a display device in front and lateral directions.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: March 22, 2022
    Inventors: Jongmin Ok, Young Gu Kim, Jiyun Park, Jongho Son, Sun-Young Chang, Hyelim Jang, Baekkyun Jeon, Kyungseon Tak
  • Publication number: 20220057673
    Abstract: Provided is an optical member. The optical member includes a color filter member including quantum dots and a low-refractive index layer below the color filter member and including a first hollow particle and a second hollow particle. The first hollow particle may have a particle size different from a particle size of the second hollow particle.
    Type: Application
    Filed: September 21, 2021
    Publication date: February 24, 2022
    Inventors: Jin-soo JUNG, Younggu KIM, Taekjoon LEE, Jongmin OK, Sun-young CHANG, Hyelim JANG, Baekkyun JEON, Kyungseon TAK
  • Patent number: 11245097
    Abstract: A display device including a light emitting element layer, an encapsulation layer disposed on the light emitting element layer, wherein the encapsulation layer includes a hollow polymer structure, and an input sensor disposed on the encapsulation layer.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: February 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jiyun Park, Young Gu Kim, Jongmin Ok, Sun-Young Chang, Hyelim Jang, Kyungseon Tak, Baekkyun Jeon