Patents by Inventor Yoon-Kyung Choi
Yoon-Kyung 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).
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Patent number: 11842013Abstract: A touch screen driving circuit for driving a touch screen which includes a display layer and a touch sensor layer on the display layer is provided. The touch screen driving circuit includes: a touch controller configured to provide a plurality of drive signals respectively to a plurality of first electrodes of the touch sensor layer, in a driving period, wherein the plurality of drive signals are phase synchronized during a first sub-period of the driving period; and a display driving circuit configured to provide a compensation signal to at least some of a plurality of source lines of the display layer in the first sub-period of the driving period, wherein the plurality of compensation signals are phase synchronized opposite to the plurality of drive signals in the first sub-period.Type: GrantFiled: November 17, 2021Date of Patent: December 12, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunrae Jo, Yoon-Kyung Choi, Jinbong Kim
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Patent number: 11782552Abstract: A capacitive touch panel includes a plurality of x-line channels extending in a first direction, a plurality of y-line channels extending in a second direction, different from the first direction, and processing circuitry configured to apply a first voltage to the x-line channels, apply a second voltage to the y-line channels, the first voltage and the second voltage having opposite phases to each other, and sense a contact on at least one of intersections of the plurality of x-line channels and the plurality of y-line channels.Type: GrantFiled: October 31, 2019Date of Patent: October 10, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Yoon Kyung Choi, Jun Chul Park, Jin Bong Kim
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Publication number: 20230289018Abstract: A touch sensor controller for driving a touch sensor that is stacked on a display panel and includes driving electrodes and receiving electrodes crossing the driving electrodes, the touch sensor controller including: a driving circuit configured to sequentially provide driving signals to the driving electrodes; a read-out circuit configured to, in response to the driving signals, generate touch data based on first sensing signals received from the receiving electrodes and generate display noise data based on a second sensing signal received from a first driving electrode to which a driving signal of the driving signals is not applied from among the driving electrodes; and a touch processor configured to determine whether a touch input has occurred on the touch sensor based on the touch data and the display noise data.Type: ApplicationFiled: May 22, 2023Publication date: September 14, 2023Inventors: Junchul PARK, Jonghee NA, Gwangho NAM, Taekon YU, Hyunwook LIM, Woohyuk JANG, Bumsoo KIM, Byunghwee PARK, Wongab JUNG, Yoon-Kyung CHOI
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Publication number: 20230266842Abstract: A touch sensing device may include a touch sensor array including at least one beacon driving section and at least one compensation section, the at least one beacon driving section including a plurality of first touch electrodes, and the at least one compensation section including a plurality of second touch electrodes; and a touch controller connected to the touch sensor array through at least one first driving channel and at least one second driving channel, the touch controller is configured to, during a first uplink period for communication with an active pen, provide at least one beacon signal to the at least one first driving channel, and provide at least one compensation signal to the at least one second driving channel, the at least one compensation signal being an inverse of the at least one beacon signal.Type: ApplicationFiled: April 12, 2023Publication date: August 24, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: Sungyong CHO, Jinchul LEE, Yunrae JO, Bumsoo KIM, Choonghoon LEE, Yoon-Kyung CHOI
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Patent number: 11656715Abstract: A touch sensing device may include a touch sensor array including at least one beacon driving section and at least one compensation section, the at least one beacon driving section including a plurality of first touch electrodes, and the at least one compensation section including a plurality of second touch electrodes; and a touch controller connected to the touch sensor array through at least one first driving channel and at least one second driving channel, the touch controller is configured to, during a first uplink period for communication with an active pen, provide at least one beacon signal to the at least one first driving channel, and provide at least one compensation signal to the at least one second driving channel, the at least one compensation signal being an inverse of the at least one beacon signal.Type: GrantFiled: August 9, 2021Date of Patent: May 23, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sungyong Cho, Jinchul Lee, Yunrae Jo, Bumsoo Kim, Choonghoon Lee, Yoon-Kyung Choi
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Patent number: 11656729Abstract: A touch sensor controller for driving a touch sensor that is stacked on a display panel and includes driving electrodes and receiving electrodes crossing the driving electrodes, the touch sensor controller including: a driving circuit configured to sequentially provide driving signals to the driving electrodes; a read-out circuit configured to, in response to the driving signals, generate touch data based on first sensing signals received from the receiving electrodes and generate display noise data based on a second sensing signal received from a first driving electrode to which a driving signal of the driving signals is not applied from among the driving electrodes; and a touch processor configured to determine whether a touch input has occurred on the touch sensor based on the touch data and the display noise data.Type: GrantFiled: February 1, 2022Date of Patent: May 23, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Junchul Park, Jonghee Na, Gwangho Nam, Taekon Yu, Hyunwook Lim, Woohyuk Jang, Bumsoo Kim, Byunghwee Park, Wongab Jung, Yoon-Kyung Choi
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Patent number: 11615752Abstract: A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.Type: GrantFiled: April 29, 2021Date of Patent: March 28, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Changju Lee, Yongil Kwon, Yoon-Kyung Choi, Junho Huh
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Publication number: 20220244812Abstract: A touch sensor controller for driving a touch sensor that is stacked on a display panel and includes driving electrodes and receiving electrodes crossing the driving electrodes, the touch sensor controller including: a driving circuit configured to sequentially provide driving signals to the driving electrodes; a read-out circuit configured to, in response to the driving signals, generate touch data based on first sensing signals received from the receiving electrodes and generate display noise data based on a second sensing signal received from a first driving electrode to which a driving signal of the driving signals is not applied from among the driving electrodes; and a touch processor configured to determine whether a touch input has occurred on the touch sensor based on the touch data and the display noise data.Type: ApplicationFiled: February 1, 2022Publication date: August 4, 2022Inventors: Junchul PARK, Jonghee NA, Gwangho NAM, Taekon YU, Hyunwook LIM, Woohyuk JANG, Bumsoo KIM, Byunghwee PARK, Wongab JUNG, Yoon-Kyung CHOI
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Publication number: 20220214791Abstract: A touch sensing device may include a touch sensor array including at least one beacon driving section and at least one compensation section, the at least one beacon driving section including a plurality of first touch electrodes, and the at least one compensation section including a plurality of second touch electrodes; and a touch controller connected to the touch sensor array through at least one first driving channel and at least one second driving channel, the touch controller is configured to, during a first uplink period for communication with an active pen, provide at least one beacon signal to the at least one first driving channel, and provide at least one compensation signal to the at least one second driving channel, the at least one compensation signal being an inverse of the at least one beacon signal.Type: ApplicationFiled: August 9, 2021Publication date: July 7, 2022Applicant: Samsung Electronics Co., Ltd.Inventors: Sungyong CHO, Jinchul LEE, Yunrae JO, Bumsoo KIM, Choonghoon LEE, Yoon-Kyung CHOI
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Patent number: 11340732Abstract: The present inventive concepts relate to a noise compensation device and method of a touch-sensing panel, and to a noise avoiding device and method. The noise compensation device of a touch-sensing device according to some example embodiments includes: a noise compensation signal generator configured to generate mutually different noise compensation signals for at least portions of first to Nth channels included in the touch-sensing panel; and a noise cancelling signal output circuit configured to generate noise-compensated reception signals based on the mutually different noise compensation signals and provide the noise-compensated reception signals to each of at least two channels among the first to Nth channels, wherein N is an integer two or greater.Type: GrantFiled: September 30, 2019Date of Patent: May 24, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Jin Chui Lee, San Ho Byun, Yoon Kyung Choi, Choong Hoon Lee, Bum Soo Kim, Ho Suk Na, Dong Wook Lim
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Publication number: 20220155937Abstract: A touch screen driving circuit for driving a touch screen which includes a display layer and a touch sensor layer on the display layer is provided. The touch screen driving circuit includes: a touch controller configured to provide a plurality of drive signals respectively to a plurality of first electrodes of the touch sensor layer, in a driving period, wherein the plurality of drive signals are phase synchronized during a first sub-period of the driving period; and a display driving circuit configured to provide a compensation signal to at least some of a plurality of source lines of the display layer in the first sub-period of the driving period, wherein the plurality of compensation signals are phase synchronized opposite to the plurality of drive signals in the first sub-period.Type: ApplicationFiled: November 17, 2021Publication date: May 19, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunrae JO, Yoon-Kyung CHOI, Jinbong KIM
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Patent number: 11256365Abstract: A touch controller includes a controller receiving a display timing signal and generating a touch sensing control signal synchronously with the display timing signal. The touch controller also includes a sensing circuit driving a touch sensing array in response to the touch sensing control signal in order to generate touch data corresponding to sensing signals provided by the touch sensing array. The sensing circuit provides a first driving signal having a first polarity to at least one driving channel of the touch sensing array during a first display frame period, and provides a second driving signal having a second polarity different from the first polarity during a second display frame period.Type: GrantFiled: March 19, 2019Date of Patent: February 22, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Kyeong-Gon Lee, Bum-Soo Kim, Sang-Uk Woo, Yoon-Kyung Choi
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Patent number: 11216129Abstract: A touch sensor including a sensor array including a first touch node and a second touch node adjacent to each other in at least one of a first direction or a second direction, the second direction perpendicular to the first direction, the first touch node and the second touch node electrically separated from each other, each of the first touch node and the second touch node including a driving electrode and a sensing electrode, and a controller configured to output a first driving signal having a first phase to the driving electrode of the first touch node and output a second driving signal having a second phase opposite to the first phase of the first driving signal to the driving electrode of the second touch node may be provided. The controller may be further configured to output the first driving signal and the second driving signal simultaneously.Type: GrantFiled: January 9, 2020Date of Patent: January 4, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Yoon Kyung Choi, Ki Up Kim, Jin Bong Kim, Sung Yong Cho
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Publication number: 20210350754Abstract: A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.Type: ApplicationFiled: April 29, 2021Publication date: November 11, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Changju Lee, Yongil Kwon, Yoon-Kyung Choi, Junho Huh
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Patent number: 11048364Abstract: A method for acquiring capacitance of a capacitive touch panel includes acquiring a selected capacitance value at a selected point among a plurality of points at which a plurality of capacitances are present, in the capacitive touch panel, determining the selected capacitance value as a reference capacitance value, and performing a multi-driving using a balanced code, and acquiring a capacitance value from at least one point among the plurality of points using the reference capacitance value.Type: GrantFiled: August 23, 2019Date of Patent: June 29, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Yong Jin Park, Min Gyu Kim, Sun Kwon Kim, Jong Bin Moon, Young Kil Choi, Yoon Kyung Choi
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Publication number: 20200326815Abstract: A touch sensor including a sensor array including a first touch node and a second touch node adjacent to each other in at least one of a first direction or a second direction, the second direction perpendicular to the first direction, the first touch node and the second touch node electrically separated from each other, each of the first touch node and the second touch node including a driving electrode and a sensing electrode, and a controller configured to output a first driving signal having a first phase to the driving electrode of the first touch node and output a second driving signal having a second phase opposite to the first phase of the first driving signal to the driving electrode of the second touch node may be provided. The controller may be further configured to output the first driving signal and the second driving signal simultaneously.Type: ApplicationFiled: January 9, 2020Publication date: October 15, 2020Applicant: Samsung Electronics Co., Ltd.Inventors: Yoon Kyung Choi, Ki Up Kim, Jin Bong Kim, Sung Yong Cho
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Patent number: 10768760Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.Type: GrantFiled: February 20, 2019Date of Patent: September 8, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Hyoung-rae Kim, Yoon-kyung Choi, Hwa-hyun Cho, Sang-woo Kim, Hae-yong Ahn, Hyung-dal Kwon, Jong-kang Park, San-ho Byun, Jae-suk Yu
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Publication number: 20200272300Abstract: The present inventive concepts relate to a noise compensation device and method of a touch-sensing panel, and to a noise avoiding device and method. The noise compensation device of a touch-sensing device according to some example embodiments includes: a noise compensation signal generator configured to generate mutually different noise compensation signals for at least portions of first to Nth channels included in the touch-sensing panel; and a noise cancelling signal output circuit configured to generate noise-compensated reception signals based on the mutually different noise compensation signals and provide the noise-compensated reception signals to each of at least two channels among the first to Nth channels, wherein N is an integer two or greater.Type: ApplicationFiled: September 30, 2019Publication date: August 27, 2020Applicant: Samsung Electronics Co., Ltd.Inventors: Jin Chul LEE, San Ho BYUN, Yoon Kyung CHOI, Choong Hoon LEE, Bum Soo KIM, Ho Suk NA, Dong Wook LIM
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Patent number: 10712869Abstract: A touch panel controller includes a signal driver charging a plurality of sensor lines extending in a direction with the same charge, by applying a driving signal to one sensor line of sensor lines and applying a mirrored driving signal mirrored from the driving signal to the remaining sensor lines of the sensor lines, and a sensor sensing a change in capacitance from the sensor lines, respectively.Type: GrantFiled: August 17, 2017Date of Patent: July 14, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Jin Chul Lee, Choong Hoon Lee, Cha Dong Kim, Jun Chul Park, Dong Wook Lim, Yoon Kyung Choi
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Publication number: 20200218421Abstract: A capacitive touch panel includes a plurality of x-line channels extending in a first direction, a plurality of y-line channels extending in a second direction, different from the first direction, and processing circuitry configured to apply a first voltage to the x-line channels, apply a second voltage to the y-line channels, the first voltage and the second voltage having opposite phases to each other, and sense a contact on at least one of intersections of the plurality of x-line channels and the plurality of y-line channels.Type: ApplicationFiled: October 31, 2019Publication date: July 9, 2020Applicant: Samsung Electronics Co., Ltd.Inventors: Yoon Kyung CHOI, Jun Chul Park, Jin Bong Kim