Patents by Inventor Sung-Chun Park
Sung-Chun Park 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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Patent number: 11978857Abstract: The present disclosure provides a non-aqueous electrolyte including an additive for a non-aqueous electrolyte represented by Formula 1 below: wherein, R1 to R5 may each independently be any one selected from the group consisting of H, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, and a nitrile group.Type: GrantFiled: September 29, 2022Date of Patent: May 7, 2024Assignee: LG Energy Solution, Ltd.Inventors: Hyung Tae Kim, Chul Haeng Lee, Jeong Woo Oh, Byung Chun Park, Young Mi Seo, Sung Guk Park
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Patent number: 11942868Abstract: A power provider includes: first, second, and third inductors; a first transistor connected to the second inductor; a second transistor connected to the third inductor; and a power integrated chip (IC) including input terminals connected to the first, second, and third inductors, and an output terminal connected to a power line. The power provider may supply the power voltage using the first inductor and the power IC when power current is less than a first reference value, supply the power voltage using the second inductor, the first transistor, and the power IC when the power current is greater than the first reference value and less than a second reference value, and supply the power voltage using the second and third inductors, the first and second transistors, and the power IC when the power current is greater than the second reference value.Type: GrantFiled: January 11, 2023Date of Patent: March 26, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yoon Young Lee, Sung Chun Park
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Patent number: 11929126Abstract: A memory device, and a method of operating the memory device, includes a memory block in which a plurality of cell pages are coupled to each of word lines. The memory device also includes a peripheral circuit configured to adjust a time point at which a verify voltage is applied to a selected word line among the word lines according to an order of performing a program operation during a verify operation of a selected cell page. The memory device further includes a control logic circuit configured to transmit, to the peripheral circuit, an operation code for adjusting a time point at which the verify voltage is output.Type: GrantFiled: February 18, 2022Date of Patent: March 12, 2024Assignee: SK hynix Inc.Inventors: Sung Hyun Hwang, Jae Yeop Jung, Se Chun Park
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Publication number: 20240046834Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.Type: ApplicationFiled: October 20, 2023Publication date: February 8, 2024Inventors: Sung Chun PARK, Yoon Young LEE
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Patent number: 11881150Abstract: A display device including: a power management integrated circuit (IC) including a feedback terminal for receiving a feedback voltage that corresponds to an input voltage and an output terminal for supplying a first voltage; a display driver IC electrically connected to the power management IC, the display driver IC including an input terminal for receiving the input voltage that corresponds to the first voltage; and a frequency compensation circuit connected to the input terminal, the feedback terminal, and the output terminal, the frequency compensation circuit including a feedback capacitor and a feedback resistor.Type: GrantFiled: July 25, 2022Date of Patent: January 23, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yang Uk Nam, Sung Chun Park
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Patent number: 11823604Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving to mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.Type: GrantFiled: December 2, 2022Date of Patent: November 21, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung Chun Park, Yoon Young Lee
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Publication number: 20230318458Abstract: A power provider includes: first, second, and third inductors; a first transistor connected to the second inductor; a second transistor connected to the third inductor; and a power integrated chip (IC) including input terminals connected to the first, second, and third inductors, and an output terminal connected to a power line. The power provider may supply the power voltage using the first inductor and the power IC when power current is less than a first reference value, supply the power voltage using the second inductor, the first transistor, and the power IC when the power current is greater than the first reference value and less than a second reference value, and supply the power voltage using the second and third inductors, the first and second transistors, and the power IC when the power current is greater than the second reference value.Type: ApplicationFiled: January 11, 2023Publication date: October 5, 2023Inventors: Yoon Young LEE, Sung Chun PARK
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Publication number: 20230237952Abstract: A display device including: a power management integrated circuit (IC) including a feedback terminal for receiving a feedback voltage that corresponds to an input voltage and an output terminal for supplying a first voltage; a display driver IC electrically connected to the power management IC, the display driver IC including an input terminal for receiving the input voltage that corresponds to the first voltage; and a frequency compensation circuit connected to the input terminal, the feedback terminal, and the output terminal, the frequency compensation circuit including a feedback capacitor and a feedback resistor.Type: ApplicationFiled: July 25, 2022Publication date: July 27, 2023Inventors: Yang Uk Nam, Sung Chun Park
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Publication number: 20230155474Abstract: A DC-DC converter includes a first converter outputting a first power voltage in a first driving method of generating an inductor current by alternately turning on transistors in a normal mode and outputting the first power voltage in a second driving method of generating the inductor current with the number of turn-on times less than that of the first driving method in a power saving mode, a second converter outputting a second power voltage in a third driving method of generating the inductor current with the number of turn-on times less than that of the second driving method in the power saving mode and determining differently magnitudes of the second power voltage in the power saving mode and the second power voltage in the normal mode, and a mode selector supplying a mode control signal to the converters to drive the converters according to one of the modes.Type: ApplicationFiled: May 26, 2022Publication date: May 18, 2023Inventors: Yang UK NAM, Sung Chun PARK
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Patent number: 11632049Abstract: A DC-DC converter including a first power supply including a first converter outputting a first power voltage, a first sensor detecting a panel current from an output of the first converter; and a first output group including a plurality of inverting converters outputting a second power voltage based on the panel current; a second power supply including a second converter outputting the first power voltage, and a second output group including a plurality of inverting converters outputting the second power voltage based on the panel current; and a first phase controller controlling operations of the inverting converters included in each of the first and second output groups based on the detected panel current. The second power supply operates when the panel current exceeds a predetermined enable value.Type: GrantFiled: September 1, 2022Date of Patent: April 18, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Sung Chun Park
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Patent number: 11620941Abstract: A DC-DC includes a sensor, a determiner, a reference voltage controller and an output voltage controller. The sensor is configured to sense an output voltage to generate a sensed signal. The determiner is electrically connected to the sensor and is configured to determine a difference between the sensed signal and a first protection level for generating a determiner output. The reference voltage controller is electrically connected to the determiner and is configured to generate a second reference voltage based on a first reference voltage and a value of the determiner output. The output voltage controller is electrically connected to the sensor and is configured to output the output voltage based on an input voltage, a feedback voltage of the output voltage, and the second reference voltage.Type: GrantFiled: September 4, 2020Date of Patent: April 4, 2023Assignee: Samsung Display Co., Ltd.Inventors: Yoon Young Lee, Sung Chun Park, Chang Seok Chae
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Publication number: 20230098574Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving to mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.Type: ApplicationFiled: December 2, 2022Publication date: March 30, 2023Inventors: Sung Chun PARK, Yoon Young LEE
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Publication number: 20220416669Abstract: A DC-DC converter including a first power supply including a first converter outputting a first power voltage, a first sensor detecting a panel current from an output of the first converter; and a first output group including a plurality of inverting converters outputting a second power voltage based on the panel current; a second power supply including a second converter outputting the first power voltage, and a second output group including a plurality of inverting converters outputting the second power voltage based on the panel current; and a first phase controller controlling operations of the inverting converters included in each of the first and second output groups based on the detected panel current. The second power supply operates when the panel current exceeds a predetermined enable value.Type: ApplicationFiled: September 1, 2022Publication date: December 29, 2022Applicant: Samsung Display Co., Ltd.Inventor: Sung Chun PARK
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Patent number: 11521533Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.Type: GrantFiled: August 9, 2021Date of Patent: December 6, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung Chun Park, Yoon Young Lee
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Patent number: 11437912Abstract: A DC-DC converter including a first power supply including a first converter outputting a first power voltage, a first sensor detecting a panel current from an output of the first converter; and a first output group including a plurality of inverting converters outputting a second power voltage based on the panel current; a second power supply including a second converter outputting the first power voltage, and a second output group including a plurality of inverting converters outputting the second power voltage based on the panel current; and a first phase controller controlling operations of the inverting converters included in each of the first and second output groups based on the detected panel current. The second power supply operates when the panel current exceeds a predetermined enable value.Type: GrantFiled: April 21, 2021Date of Patent: September 6, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Sung Chun Park
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Patent number: 11393393Abstract: A display device and an operating method of the display device are provided. The display device may include: a first transistor controlled by a first control signal to connect an input terminal to which an input voltage is applied and a first node; a second transistor controlled by a second control signal to connect a second node to which a power supply voltage is outputted and the first node; an overcharge recognition circuit configured to receive a first reference voltage, a feedback voltage, and a second reference voltage, to determine whether it is overcharged, and to output an overcharge recognition signal; and a discharge circuit configured to provide a first discharge path for discharging the power supply voltage based on an enable signal generated depending on the overcharge recognition signal.Type: GrantFiled: May 14, 2021Date of Patent: July 19, 2022Inventors: Dong Kwan Han, Sung Chun Park
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Patent number: 11308835Abstract: A display device includes a display panel to display an image, a data driver to supply a data signal to the display panel, and a power supply to supply a driving voltage to the display panel through a power supply line and to supply a data driving voltage to the data driver, in which the power supply is configured to detect a voltage of the power supply line during an initial driving period during which the data driving voltage is supplied to the data driver, to supply a ground voltage to the display panel when the voltage detected from the power supply line is different from a reference voltage, and to supply the driving voltage to the power supply line after the initial driving period.Type: GrantFiled: October 29, 2019Date of Patent: April 19, 2022Assignee: Samsung Display Co., Ltd.Inventors: Yoon Young Lee, Sung Chun Park
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Publication number: 20220093040Abstract: A display device and an operating method of the display device are provided. The display device may include: a first transistor controlled by a first control signal to connect an input terminal to which an input voltage is applied and a first node; a second transistor controlled by a second control signal to connect a second node to which a power supply voltage is outputted and the first node; an overcharge recognition circuit configured to receive a first reference voltage, a feedback voltage, and a second reference voltage, to determine whether it is overcharged, and to output an overcharge recognition signal; and a discharge circuit configured to provide a first discharge path for discharging the power supply voltage based on an enable signal generated depending on the overcharge recognition signal.Type: ApplicationFiled: May 14, 2021Publication date: March 24, 2022Inventors: Dong Kwan HAN, Sung Chun PARK
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Patent number: 11270653Abstract: A display device includes the following elements: a display panel comprising pixels; a data driver supplying data signals to the plurality of pixels; a driving voltage supply supplying a first driving voltage to the data driver; a power supply supplying a first input driving voltage to the driving voltage supply; and a timing controller providing control signals to the data driver, the driving voltage supply, and the power supply and providing luminance information and per-second frame rate information of the display panel to the driving voltage supply. The driving voltage supply comprises an input driving voltage adjuster which adjusts the first input driving voltage to a second input driving voltage based on the luminance information and the per-second frame rate information.Type: GrantFiled: January 28, 2021Date of Patent: March 8, 2022Inventors: Hyun Chang Kim, Sung Chun Park, Dong Kwan Han
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Patent number: 11250762Abstract: A display device includes a display panel including a plurality of pixels and a power line, and displaying an image in a normal mode or a power saving mode, a data driver which provides a data signal to the pixels, and a power supply which supplies a source driving voltage to the data driver and supplies a first power voltage to the power line in the normal mode. The data driver supplies a first auxiliary power voltage to the power line in the power saving mode, and the power supply outputs the first power voltage by decreasing a voltage level of the first power voltage to a first power saving voltage level in a vertical blank period in which the pixels do not display an image during a first switching period changing from the normal mode to the power saving mode.Type: GrantFiled: September 10, 2020Date of Patent: February 15, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yang Uk Nam, Sung Chun Park