Patents by Inventor Sang Y. Youn
Sang Y. Youn 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).
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Publication number: 20240054973Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: ApplicationFiled: October 24, 2023Publication date: February 15, 2024Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei H. Yao
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Patent number: 11842708Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: GrantFiled: January 27, 2023Date of Patent: December 12, 2023Assignee: Apple Inc.Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei H. Yao
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Publication number: 20230169936Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: ApplicationFiled: January 27, 2023Publication date: June 1, 2023Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei H. Yao
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Patent number: 11580934Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: GrantFiled: May 10, 2022Date of Patent: February 14, 2023Assignee: Apple Inc.Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei H. Yao
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Publication number: 20220392965Abstract: A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode. The organic light-emitting diodes may each have an anode that is coupled to a thin-film transistor pixel circuit for controlling the anode. Transparent windows may be formed in the display. The windows may be formed by replacing data storage capacitors and other pixel circuit structures in a subset of the pixels with transparent window structures, by selectively removing portions of light-emitting diode anodes, and by shifting anodes. An array of electrical components such as an array of light sensors may be aligned with the transparent windows and may be used to measure light passing through the transparent windows.Type: ApplicationFiled: August 12, 2022Publication date: December 8, 2022Inventors: Minhyuk Choi, Rui Liu, Cheng Chen, Chin-Wei Lin, Sang Y. Youn, Shih Chang Chang, Tsung-Ting Tsai
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Publication number: 20220270569Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: ApplicationFiled: May 10, 2022Publication date: August 25, 2022Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei H. Yao
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Patent number: 11417709Abstract: A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode. The organic light-emitting diodes may each have an anode that is coupled to a thin-film transistor pixel circuit for controlling the anode. Transparent windows may be formed in the display. The windows may be formed by replacing data storage capacitors and other pixel circuit structures in a subset of the pixels with transparent window structures, by selectively removing portions of light-emitting diode anodes, and by shifting anodes. An array of electrical components such as an array of light sensors may be aligned with the transparent windows and may be used to measure light passing through the transparent windows.Type: GrantFiled: April 27, 2020Date of Patent: August 16, 2022Assignee: Apple Inc.Inventors: Minhyuk Choi, Rui Liu, Cheng Chen, Chin-Wei Lin, Sang Y. Youn, Shih Chang Chang, Tsung-Ting Tsai
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Patent number: 11348555Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: GrantFiled: March 29, 2021Date of Patent: May 31, 2022Assignee: Apple Inc.Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei H. Yao
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Patent number: 11221355Abstract: Methods and systems for compensating display panel operations providing a current from power circuitry over a first path between a display panel and the power circuitry are provided. A sensing current may be injected into the first path via a second path between the power circuitry and the first path. An equivalent series resistance (ESR) of the first path may be calculated using a third path and the sensing current. A processor may compensate for electrical fluctuations from the power circuitry to the display panel based at least in part on the measured ESR.Type: GrantFiled: April 3, 2018Date of Patent: January 11, 2022Assignee: Apple Inc.Inventors: Sang Y Youn, Sun-Il Chang
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Publication number: 20210241720Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: ApplicationFiled: March 29, 2021Publication date: August 5, 2021Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei H. Yao
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Patent number: 10984752Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: GrantFiled: September 26, 2019Date of Patent: April 20, 2021Assignee: Apple Inc.Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei Y. Yao
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Publication number: 20200258950Abstract: A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode. The organic light-emitting diodes may each have an anode that is coupled to a thin-film transistor pixel circuit for controlling the anode. Transparent windows may be formed in the display. The windows may be formed by replacing data storage capacitors and other pixel circuit structures in a subset of the pixels with transparent window structures, by selectively removing portions of light-emitting diode anodes, and by shifting anodes. An array of electrical components such as an array of light sensors may be aligned with the transparent windows and may be used to measure light passing through the transparent windows.Type: ApplicationFiled: April 27, 2020Publication date: August 13, 2020Inventors: Minhyuk Choi, Rui Liu, Cheng Chen, Chin-Wei Lin, Sang Y. Youn, Shih Chang Chang, Tsung-Ting Tsai
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Patent number: 10644077Abstract: A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode. The organic light-emitting diodes may each have an anode that is coupled to a thin-film transistor pixel circuit for controlling the anode. Transparent windows may be formed in the display. The windows may be formed by replacing data storage capacitors and other pixel circuit structures in a subset of the pixels with transparent window structures, by selectively removing portions of light-emitting diode anodes, and by shifting anodes. An array of electrical components such as an array of light sensors may be aligned with the transparent windows and may be used to measure light passing through the transparent windows.Type: GrantFiled: September 6, 2016Date of Patent: May 5, 2020Assignee: Apple Inc.Inventors: Minhyuk Choi, Rui Liu, Cheng Chen, Chin-Wei Lin, Sang Y. Youn, Shih Chang Chang, Tsung-Ting Tsai
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Patent number: 10643511Abstract: An electronic device may have a flexible display such as an organic light-emitting diode display. A strain sensing resistor may be formed on a bent tail portion of the flexible display to gather strain measurements. Resistance measurement circuitry in a display driver integrated circuit may make resistance measurements on the strain sensing resistor and a temperature compensation resistor to measure strain. A crack detection line may be formed from an elongated pair of traces that are coupled at their ends to form a loop. The crack detection line may run along a peripheral edge of the flexible display. Crack detection circuitry may monitor the resistance of the crack detection line to detect cracks. The crack detection circuitry may include switches that adjust the length of the crack detection line and thereby allow resistances to be measured for different segments of the line.Type: GrantFiled: September 23, 2016Date of Patent: May 5, 2020Assignee: Apple Inc.Inventors: Rui Zhang, Mohammad Hajirostam, Hung Sheng Lin, Mohammad B. Vahid Far, Sang Y. Youn, Zhen Zhang, Prashant Mandlik, Sun-Il Chang, Jie Won Ryu, Shengkui Gao, Hyunwoo Nho, Wei H. Yao, Yafei Bi, Yun Wang
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Publication number: 20200035202Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: ApplicationFiled: September 26, 2019Publication date: January 30, 2020Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei Y. Yao
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Patent number: 10529053Abstract: A display device may include a display having a pixels and a processor. The processor may receive image data, determine a digital offset value for a pixel based on a location of the pixel, such that the digital offset value compensates for one or more non-uniformity properties of the pixel. The processor may determine a scale factor associated with the pixel based on at least two of a luminance setting for the display, a driving mode of the display, and a gray level value for the pixel. The processor may then generate correction image data by applying the scale factor to the digital offset value, generate compensated image data based on the correction image data and the image data, and provide the compensated image data to the display.Type: GrantFiled: September 21, 2017Date of Patent: January 7, 2020Assignee: Apple Inc.Inventors: Shengkui Gao, Hung Sheng Lin, Hyunsoo Kim, Hyunwoo Nho, Katherine W. Song, Mohammad Hajirostam, Myung-Je Cho, Rui Zhang, Sang Y. Youn, Wei H. Yao, Yafei Bi
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Patent number: 10467985Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: GrantFiled: December 17, 2018Date of Patent: November 5, 2019Assignee: Apple Inc.Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei Y. Yao
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Patent number: 10467964Abstract: An electronic device comprises a display and a controller. The controller is configured to determine a change in a refresh rate of the display from a first frequency to a second frequency. The controller is also configured to selectively generate a control signal configured to control emission of a light emitting diode of a display pixel of the display based on the first frequency.Type: GrantFiled: February 11, 2016Date of Patent: November 5, 2019Assignee: Apple Inc.Inventors: Vasudha Gupta, Chin-Wei Lin, Yafei Bi, Hung Sheng Lin, Jean-Pierre Simon Guillou, Tsung-Ting Tsai, Sang Y. Youn
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Publication number: 20190228740Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.Type: ApplicationFiled: December 17, 2018Publication date: July 25, 2019Inventors: Koorosh Aflatooni, Minhyuk Choi, Mohammad Ali Jangda, Sang Y. Youn, Yafei Bi, Jean-Pierre Guillou, Wei Y. Yao
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Patent number: 10304411Abstract: Display panels and methods for operating a display panel are described. In an embodiment, the display panel includes a plurality of pixels arranged in rows and columns, a plurality of rows of emission control lines extending through the plurality of rows of pixels, and a global emission line coupled to the plurality of rows of emission control lines. Modes of operation of the display panel include global flash mode and low persistence mode.Type: GrantFiled: November 9, 2016Date of Patent: May 28, 2019Assignee: Apple Inc.Inventors: Koorosh Aflatooni, Sang Y. Youn, Mohammad Hajirostam, Yun Wang