Patents by Inventor Jin-Taek Hong
Jin-Taek Hong 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: 20240069674Abstract: A sensor device includes: first sensors; second sensors which forms a capacitance with the first sensors; and a sensor driver which transmits driving signals to the first sensors through first sensor lines, and receives sensing signals from the second sensors through second sensor lines. The sensor driver sequentially transmits the driving signals to the first sensors, and transmits, during each period of transmitting the driving signals, an offset signal, which is identical in frequency to and different in phase from the driving signals, to at least one selected from first sensors which does not receive the driving signals among the first sensor. The sensor driver sets at least one selected from a slew rate and a voltage level of the offset signal to a value different from a corresponding value of a corresponding driving signal.Type: ApplicationFiled: April 17, 2023Publication date: February 29, 2024Inventors: Jin Taek HONG, Ja Seung KU
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Patent number: 11916171Abstract: A display device includes a substrate, a first electrode and a second electrode which are spaced apart from each other in a second direction, light-emitting elements spaced apart from each other in the first direction, a first contact electrode electrically contacting the light-emitting elements, and a second contact electrode electrically contacting the light-emitting elements. The first contact electrode electrically contacts the first electrode through a first contact portion disposed on the first electrode, the second contact electrode electrically contacts the second electrode through a second contact portion disposed on the second electrode, the first contact portion is disposed on an end portion in the first direction of the first contact electrode, and the second contact portion is disposed on an end portion in the first direction of the second contact electrode.Type: GrantFiled: May 21, 2021Date of Patent: February 27, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Wook Lee, Ki Bum Kim, Jin Taek Kim, Jung Eun Hong
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Reference voltage generator, display device including the same, and method of driving display device
Patent number: 11741868Abstract: Provided is a display device which comprises a display panel including a plurality of pixels displaying an image based on a driving voltage, a reference voltage generator converting a sensing driving voltage generated by measuring the driving voltage into a sensing driving current, converting a preset reference driving voltage into a reference driving current, comparing the sensing driving current and the reference driving current, and generating a first reference voltage and a second reference voltage based on a difference between the sensing driving current and the reference driving current, a gamma voltage generator generating a plurality of gamma voltages by dividing the first reference voltage and the second reference voltage, and a data driver converting image data into a data voltage based on the gamma voltages and providing the data voltage to each of the pixels.Type: GrantFiled: October 11, 2022Date of Patent: August 29, 2023Assignee: Samsung Display Co., Ltd.Inventors: Hyungrae Nam, Jin-Taek Hong -
Publication number: 20230252926Abstract: A power management circuit is disclosed that includes a boost converter, a pass transistor, and an overcurrent detect circuit. The boost converter is configured to convert an input voltage into a first power supply voltage. The pass transistor is configured to transfer the first power supply voltage as a second power supply voltage after a predetermined time from a time point at which the first power supply voltage is activated. The overcurrent detect circuit is configured to perform an overcurrent detect operation by sensing a current flowing through the pass transistor. A display device is also disclosed that includes the power management circuit.Type: ApplicationFiled: November 24, 2022Publication date: August 10, 2023Inventors: JIN-TAEK HONG, SUNGCHUN PARK
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REFERENCE VOLTAGE GENERATOR, DISPLAY DEVICE INCLUDING THE SAME, AND METHOD OF DRIVING DISPLAY DEVICE
Publication number: 20230230514Abstract: Provided is a display device which comprises a display panel including a plurality of pixels displaying an image based on a driving voltage, a reference voltage generator converting a sensing driving voltage generated by measuring the driving voltage into a sensing driving current, converting a preset reference driving voltage into a reference driving current, comparing the sensing driving current and the reference driving current, and generating a first reference voltage and a second reference voltage based on a difference between the sensing driving current and the reference driving current, a gamma voltage generator generating a plurality of gamma voltages by dividing the first reference voltage and the second reference voltage, and a data driver converting image data into a data voltage based on the gamma voltages and providing the data voltage to each of the pixels.Type: ApplicationFiled: October 11, 2022Publication date: July 20, 2023Inventors: HYUNGRAE NAM, JIN-TAEK HONG -
Patent number: 11030961Abstract: A DC to DC converter includes: an input voltage source; an inductor connected to the input voltage source; a diode connected to the inductor; a capacitor connected to the diode; a plurality of switching elements connected to a node between the inductor and the diode in a parallel connection; and a controller configured to set duty ratios of currents flowing through the switching elements such that the duty ratios of the currents flowing through the switching elements are equal to each other.Type: GrantFiled: December 14, 2018Date of Patent: June 8, 2021Assignee: Samsung Display Co., Ltd.Inventors: Jin-Taek Hong, Songyi Han
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Patent number: 10515594Abstract: A backlight unit includes a light source module including a first connection pin and a second connection pin electrically connected to the first connection pin, a power converter which provides a driving voltage to the light source module, a connector which receives a first enable signal via a first signal line and provides a second enable signal via a second signal line and a driving circuit which controls a generation of the driving voltage from the power converter in response to the second enable signal. When the connector is electrically connected to the first and second connection pins, the first enable signal is transmitted to the first connection pin via the first signal line and the connector, and the second enable signal from the second connection pin is provided to the driving circuit via the connector and the second signal line.Type: GrantFiled: April 21, 2017Date of Patent: December 24, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jin-won Jang, Won-hyoung Kang, Seung-wan Kim, Gwangteak Lee, Songyi Han, Jin-taek Hong, Seunghwan Moon
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Patent number: 10403213Abstract: A cradle according to an embodiment may include a housing to be coupled to display modules having various sizes and a light source driver inside the housing. The light source driver may generate a first driving voltage and a second driving voltage to be provided to a light source of the display module coupled to the housing. When the display module has a first size, the light source driver may supply only the first driving voltage to the display module. When the display module has a second size, larger than the first size, the light source driver outputs both the first and second driving voltages to the display module.Type: GrantFiled: February 17, 2017Date of Patent: September 3, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Songyi Han, Jin-won Jang, Jin-taek Hong
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Publication number: 20190197966Abstract: A DC to DC converter includes: an input voltage source; an inductor connected to the input voltage source; a diode connected to the inductor; a capacitor connected to the diode; a plurality of switching elements connected to a node between the inductor and the diode in a parallel connection; and a controller configured to set duty ratios of currents flowing through the switching elements such that the duty ratios of the currents flowing through the switching elements are equal to each other.Type: ApplicationFiled: December 14, 2018Publication date: June 27, 2019Inventors: Jin-Taek HONG, Songyi HAN
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Publication number: 20180090079Abstract: A backlight unit includes a light source module including a first connection pin and a second connection pin electrically connected to the first connection pin, a power converter which provides a driving voltage to the light source module, a connector which receives a first enable signal via a first signal line and provides a second enable signal via a second signal line and a driving circuit which controls a generation of the driving voltage from the power converter in response to the second enable signal. When the connector is electrically connected to the first and second connection pins, the first enable signal is transmitted to the first connection pin via the first signal line and the connector, and the second enable signal from the second connection pin is provided to the driving circuit via the connector and the second signal line.Type: ApplicationFiled: April 21, 2017Publication date: March 29, 2018Inventors: Jin-won JANG, Won-hyoung KANG, Seung-wan KIM, Gwangteak LEE, Songyi HAN, Jin-taek HONG, Seunghwan MOON
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Publication number: 20170372665Abstract: A cradle according to an embodiment may include a housing to be coupled to display modules having various sizes and a light source driver inside the housing. The light source driver may generate a first driving voltage and a second driving voltage to be provided to a light source of the display module coupled to the housing. When the display module has a first size, the light source driver may supply only the first driving voltage to the display module. When the display module has a second size, larger than the first size, the light source driver outputs both the first and second driving voltages to the display module.Type: ApplicationFiled: February 17, 2017Publication date: December 28, 2017Inventors: Songyi HAN, Jin-won JANG, Jin-taek HONG
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Patent number: 9412313Abstract: A display apparatus includes a display panel including n×m array of pixels and which sequentially drives the pixels from pixels in a first row to pixels in an n-th row, a panel driving circuit which sequentially applies first, second, third or fourth image data to the display panel, a backlight unit including a first light source disposed adjacent to the pixels in the first row and a second light source disposed adjacent to the pixels in the n-th row, and a backlight control circuit which divides each of first and second time periods into first, second, third and fourth blinking time periods, and applies a control signal to the backlight unit, where the first time period corresponds to two frames during which the first and second image data are applied, and the second time period corresponds to two frames during which the third and fourth image data are applied.Type: GrantFiled: November 3, 2014Date of Patent: August 9, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Won Sik Oh, Jin-Taek Hong
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Patent number: 9013393Abstract: In a method of driving a light source of a light source module including a plurality of driving blocks, an image signal is analyzed and a target luminance corresponding to each of the driving blocks is determined. A dimming level of each of the driving blocks is determined by using the target luminance. A driving signal is generated, and the driving signal has a pulse width based on the dimming level and a variable frequency in accordance with a processing mode of the image signal. The driving block is driven by using the driving signal.Type: GrantFiled: April 6, 2009Date of Patent: April 21, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jae-Eun Um, Jin-Taek Hong
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Publication number: 20150049131Abstract: A display apparatus includes a display panel including n×m array of pixels and which sequentially drives the pixels from pixels in a first row to pixels in an n-th row, a panel driving circuit which sequentially applies first, second, third or fourth image data to the display panel, a backlight unit including a first light source disposed adjacent to the pixels in the first row and a second light source disposed adjacent to the pixels in the n-th row, and a backlight control circuit which divides each of first and second time periods into first, second, third and fourth blinking time periods, and applies a control signal to the backlight unit, where the first time period corresponds to two frames during which the first and second image data are applied, and the second time period corresponds to two frames during which the third and fourth image data are applied.Type: ApplicationFiled: November 3, 2014Publication date: February 19, 2015Inventors: Won Sik OH, Jin-Taek HONG
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Patent number: 8902264Abstract: A display apparatus includes a display panel including n×m array of pixels and which sequentially drives the pixels from pixels in a first row to pixels in an n-th row, a panel driving circuit which sequentially applies first, second, third or fourth image data to the display panel, a backlight unit including a first light source disposed adjacent to the pixels in the first row and a second light source disposed adjacent to the pixels in the n-th row, and a backlight control circuit which divides each of first and second time periods into first, second, third and fourth blinking time periods, and applies a control signal to the backlight unit, where the first time period corresponds to two frames during which the first and second image data are applied, and the second time period corresponds to two frames during which the third and fourth image data are applied.Type: GrantFiled: June 27, 2011Date of Patent: December 2, 2014Assignee: Samsung Display Co., Ltd.Inventors: Won Sik Oh, Jin-Taek Hong
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Publication number: 20120120128Abstract: A display apparatus includes a display panel including nxm array of pixels and which sequentially drives the pixels from pixels in a first row to pixels in an n-th row, a panel driving circuit which sequentially applies first, second, third or fourth image data to the display panel, a backlight unit including a first light source disposed adjacent to the pixels in the first row and a second light source disposed adjacent to the pixels in the n-th row, and a backlight control circuit which divides each of first and second time periods into first, second, third and fourth blinking time periods, and applies a control signal to the backlight unit, where the first time period corresponds to two frames during which the first and second image data are applied, and the second time period corresponds to two frames during which the third and fourth image data are applied.Type: ApplicationFiled: June 27, 2011Publication date: May 17, 2012Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Won Sik OH, Jin-Taek HONG
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Patent number: 7723924Abstract: A backlight inverter includes a transformer boosting an input voltage at a ratio of a primary winding to a secondary winding of the transformer and outputting a first voltage and a second voltage; a protection level signal generator causing a phase delay between the first voltage and the second voltage, and generating a protection level signal, the protection level signal being a sum of the phase reversed first voltage and the second voltage; and an arc state detector comparing the protection level signal with a reference voltage and generating a detection signal; and a diving controller maintaining or stopping a supplying of an input voltage to the transformer in response to the detection signal, wherein in addition to the phase delay, another phase delay is caused by an open circuit in the transformer, so that a maximum value of the protection level signal is larger than the reference voltage and the input voltage is stopped.Type: GrantFiled: March 31, 2008Date of Patent: May 25, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Song-Yi Han, Min-Soo Choi, Jin-Taek Hong
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Patent number: 7719203Abstract: A display apparatus includes a display panel and a backlight assembly including a lamp and an inverter. The inverter includes a main transformer, a main driver and a voltage controller. The main transformer applies a driving alternating current (AC) voltage to the lamp. The main driver generates an output signal controlling the main transformer based on a feedback signal from the main transformer. The voltage controller is electrically connected to a feedback terminal of the main driver to control a maximum level of a voltage applied to the feedback terminal.Type: GrantFiled: March 13, 2008Date of Patent: May 18, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-Taek Hong, Song-Yi Han, Byung-Kyou Min
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Publication number: 20100039456Abstract: In a method of driving a light source of a light source module including a plurality of driving blocks, an image signal is analyzed and a target luminance corresponding to each of the driving blocks is determined. A dimming level of each of the driving blocks is determined by using the target luminance. A driving signal is generated, and the driving signal has a pulse width based on the dimming level and a variable frequency in accordance with a processing mode of the image signal. The driving block is driven by using the driving signal.Type: ApplicationFiled: April 6, 2009Publication date: February 18, 2010Inventors: Jae-Eun UM, Jin-Taek HONG
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Publication number: 20080258645Abstract: A backlight inverter includes a transformer boosting an input voltage at a ratio of a primary winding to a secondary winding of the transformer and outputting a first voltage and a second voltage; a protection level signal generator causing a phase delay between the first voltage and the second voltage, and generating a protection level signal, the protection level signal being a sum of the phase reversed first voltage and the second voltage; and an arc state detector comparing the protection level signal with a reference voltage and generating a detection signal; and a diving controller maintaining or stopping a supplying of an input voltage to the transformer in response to the detection signal, wherein in addition to the phase delay, another phase delay is caused by an open circuit in the transformer, so that a maximum value of the protection level signal is larger than the reference voltage and the input voltage is stopped.Type: ApplicationFiled: March 31, 2008Publication date: October 23, 2008Inventors: Song-Yi Han, Min-Soo Choi, Jin-Taek Hong