Patents by Inventor Sojung Jung
Sojung Jung 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: 11868564Abstract: Embodiments of the present disclosure relate to a touch controller, a touch sensing system, and a touch display device. Among data communication periods between the touch controller and a touch driving circuit, during the data communication period included in a period in which a system clock signal is not output, a level of a communication control signal is changed a plurality of times, thereby allowing the touch driving circuit to recognize an address start time point. Therefore, it is possible to reduce power consumption of the touch sensing system by reducing a period in which the system clock signal is output and to improve the efficiency of data communication of the touch sensing system by enabling normal data communication in a period in which the system clock signal is not output.Type: GrantFiled: October 14, 2022Date of Patent: January 9, 2024Assignee: LG Display Co., Ltd.Inventors: Sojung Jung, Youngwoo Jo
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Patent number: 11847974Abstract: A display panel sets a focus area per frame, based on focus area setting information and focus area reference line information received from the outside, control the number of gate lines simultaneously driven according to the focus area, and display a rendered image per focus area, thereby preventing the quality degradation of the image perceived by the user and increasing the frame rate of the display panel, and enhancing the quality of the virtual reality experience provided by the virtual reality device.Type: GrantFiled: October 11, 2022Date of Patent: December 19, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Kyungjin Jang, HyeonSik Kim, UnSang Yu, Kwangdug Choi, JinBong Chung, Sunkyung Shin, Sojung Jung, Beom-Jin Kim, Bongchoon Kwak
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Patent number: 11693516Abstract: A touch display device may include a touch panel configured to be time-divisionally driven in touch sensing and display periods by a synchronization signal and including touch electrodes, and a touch driver to drive the touch panel. The touch driver may include: a touch sensing circuit to supply a touch driving signal to the touch electrodes, to receive an analog touch sensing signal from the touch electrodes, and to sample an integral value of the analog touch sensing signal to output a digital sensing data; a touch control circuit to generate a pulse width modulation (PWM) signal and to receive the digital sensing data to determine a touch; and a timing control circuit to provide an output signal to the touch sensing circuit to control a sampling timing of the integral value of the analog touch sensing signal.Type: GrantFiled: October 21, 2021Date of Patent: July 4, 2023Assignee: LG Display Co., Ltd.Inventor: Sojung Jung
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Publication number: 20230178029Abstract: A display panel sets a focus area per frame, based on focus area setting information and focus area reference line information received from the outside, control the number of gate lines simultaneously driven according to the focus area, and display a rendered image per focus area, thereby preventing the quality degradation of the image perceived by the user and increasing the frame rate of the display panel, and enhancing the quality of the virtual reality experience provided by the virtual reality device.Type: ApplicationFiled: October 11, 2022Publication date: June 8, 2023Applicant: LG DISPLAY CO., LTD.Inventors: Kyungjin JANG, HyeonSik KIM, UnSang YU, Kwangdug CHOI, JinBong CHUNG, Sunkyung SHIN, Sojung JUNG, Beom-Jin KIM, Bongchoon Kwak
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Publication number: 20230168773Abstract: Embodiments of the present disclosure relate to a touch controller, a touch sensing system, and a touch display device. Among data communication periods between the touch controller and a touch driving circuit, during the data communication period included in a period in which a system clock signal is not output, a level of a communication control signal is changed a plurality of times, thereby allowing the touch driving circuit to recognize an address start time point. Therefore, it is possible to reduce power consumption of the touch sensing system by reducing a period in which the system clock signal is output and to improve the efficiency of data communication of the touch sensing system by enabling normal data communication in a period in which the system clock signal is not output.Type: ApplicationFiled: October 14, 2022Publication date: June 1, 2023Inventors: Sojung Jung, Youngwoo Jo
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Patent number: 11650691Abstract: A touch driving circuit and a touch display device are disclosed. A plurality of channel switches for driving touch electrodes disposed in areas disposed symmetrically to each other may be simultaneously turned on to perform touch sensing in a state in which a plurality of touch lines electrically connected to the plurality of channel switches are short-circuited to each other. Accordingly, touch sensing may be performed using touch data in which a load deviation due to the touch lines according to areas in which the touch electrodes are disposed is reduced, thereby improving the performance of the touch sensing.Type: GrantFiled: October 31, 2022Date of Patent: May 16, 2023Assignee: LG Display Co., Ltd.Inventors: Sojung Jung, Youngwoo Jo
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Patent number: 11550438Abstract: The present disclosure relates to a touch display device, a method of driving the touch display device, a touch driving circuit, and a touch controller, for sensing a touch using a touch driving signal whose frequency is changed in sync with a touch driving timing. According to the embodiments of the present disclosure, it is possible to have a high signal-to-noise ratio as well as improved immunity to the EMI, and acquire improved touch sensitivity.Type: GrantFiled: July 6, 2021Date of Patent: January 10, 2023Assignee: LG Display Co., Ltd.Inventors: Hyunwoo Kim, Jaehun Jun, Sojung Jung
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Publication number: 20220187977Abstract: A touch display device may include a touch panel configured to be time-divisionally driven in touch sensing and display periods by a synchronization signal and including touch electrodes, and a touch driver to drive the touch panel. The touch driver may include: a touch sensing circuit to supply a touch driving signal to the touch electrodes, to receive an analog touch sensing signal from the touch electrodes, and to sample an integral value of the analog touch sensing signal to output a digital sensing data; a touch control circuit to generate a pulse width modulation (PWM) signal and to receive the digital sensing data to determine a touch; and a timing control circuit to provide an output signal to the touch sensing circuit to control a sampling timing of the integral value of the analog touch sensing signal.Type: ApplicationFiled: October 21, 2021Publication date: June 16, 2022Applicant: LG DISPLAY CO., LTD.Inventor: Sojung JUNG
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Publication number: 20220147185Abstract: The present disclosure relates to a touch display device, a method of driving the touch display device, a touch driving circuit, and a touch controller, for sensing a touch using a touch driving signal whose frequency is changed in sync with a touch driving timing. According to the embodiments of the present disclosure, it is possible to have a high signal-to-noise ratio as well as improved immunity to the EMI, and acquire improved touch sensitivity.Type: ApplicationFiled: July 6, 2021Publication date: May 12, 2022Inventors: Hyunwoo Kim, Jaehun Jun, Sojung Jung
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Patent number: 11114039Abstract: A micro-display device comprises a silicon substrate in which a plurality of gate lines, a plurality of data lines, a plurality of emission signal lines, and a plurality of subpixels are disposed; a gate driver circuit disposed on a first side of a pixel array to drive the plurality of gate lines; an emission driver circuit driving the plurality of emission signal lines and disposed on a second side of the pixel array different from the first side of the pixel array where the gate driver circuit is disposed; a data driver circuit disposed on a third side of the pixel array to drive the plurality of data lines; a memory storing duty data regarding duty ratios of an emission signal applied to the plurality of emission signal lines; and a control circuit controlling signals applied to the gate driver circuit, the data driver circuit and the emission driver circuit, wherein the control circuit is set to have different emission times with respect to subpixels connected to the plurality of emission signal lines accType: GrantFiled: December 4, 2019Date of Patent: September 7, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Sojung Jung, Beom-Jin Kim, Bongchoon Kwak
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Patent number: 10692411Abstract: The embodiments of the present disclosure relate to a display device, a test circuit, and a test method thereof. More specifically, a display device may include a silicon substrate having a plurality of gate lines, a plurality of data lines, a plurality of sensing lines, and a pixel array on which a plurality of subpixels are arranged; a test circuit arranged on the silicon substrate, the test circuit configured to select at least one line of the plurality of data lines or the plurality of sensing lines, to convert a signal transmitted through the selected line into a digital signal, and to output test data; and a test pad unit configured to output the test data to a circuit outside the silicon substrate.Type: GrantFiled: December 18, 2018Date of Patent: June 23, 2020Assignee: LG DISPLAY CO., LTD.Inventors: Beom-Jin Kim, Sunkyung Shin, Bongchoon Kwak, Sojung Jung
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Publication number: 20200184904Abstract: A micro-display device comprises a silicon substrate in which a plurality of gate lines, a plurality of data lines, a plurality of emission signal lines, and a plurality of subpixels are disposed; a gate driver circuit disposed on a first side of a pixel array to drive the plurality of gate lines; an emission driver circuit driving the plurality of emission signal lines and disposed on a second side of the pixel array different from the first side of the pixel array where the gate driver circuit is disposed; a data driver circuit disposed on a third side of the pixel array to drive the plurality of data lines; a memory storing duty data regarding duty ratios of an emission signal applied to the plurality of emission signal lines; and a control circuit controlling signals applied to the gate driver circuit, the data driver circuit and the emission driver circuit, wherein the control circuit is set to have different emission times with respect to subpixels connected to the plurality of emission signal lines accType: ApplicationFiled: December 4, 2019Publication date: June 11, 2020Applicant: LG Display Co., Ltd.Inventors: Sojung JUNG, Beom-Jin KIM, Bongchoon KWAK
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Patent number: 10444882Abstract: Embodiments relate to a touch sensing circuit, a touch display device, and a touch sensing method. The touch sensing circuit may comprise a touch sensing process configured to output a touch driving signal during a touch sensing period to at least two touch electrodes, and to convert a touch sensing signal detected through each touch electrode, to which the touch driving signal is applied, during an analog-to-digital conversion period, into a digital sensing value, and a communication processor configured to transmit sensing data including the digital sensing value converted during the analog-to-digital conversion period to a touch controller, wherein the communication processor starts transmission of the sensing data including converted digital sensing values of at least some of touch sensing signals before each of touch sensing signals detected from the at least two touch electrodes are converted into a digital sensing value. The present invention enables quick touch sensing.Type: GrantFiled: November 28, 2017Date of Patent: October 15, 2019Assignee: LG DISPLAY CO., LTD.Inventor: Sojung Jung
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Publication number: 20190197930Abstract: The embodiments of the present disclosure relate to a display device, a test circuit, and a test method thereof. More specifically, a display device may include a silicon substrate having a plurality of gate lines, a plurality of data lines, a plurality of sensing lines, and a pixel array on which a plurality of subpixels are arranged; a test circuit arranged on the silicon substrate, the test circuit configured to select at least one line of the plurality of data lines or the plurality of sensing lines, to convert a signal transmitted through the selected line into a digital signal, and to output test data; and a test pad unit configured to output the test data to a circuit outside the silicon substrate.Type: ApplicationFiled: December 18, 2018Publication date: June 27, 2019Inventors: Beom-Jin KIM, Sunkyung SHIN, Bongchoon KWAK, Sojung JUNG
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Publication number: 20180150168Abstract: Embodiments relate to a touch sensing circuit, a touch display device, and a touch sensing method. The touch sensing circuit may comprise a touch sensing process configured to output a touch driving signal during a touch sensing period to at least two touch electrodes, and to convert a touch sensing signal detected through each touch electrode, to which the touch driving signal is applied, during an analog-to-digital conversion period, into a digital sensing value, and a communication processor configured to transmit sensing data including the digital sensing value converted during the analog-to-digital conversion period to a touch controller, wherein the communication processor starts transmission of the sensing data including converted digital sensing values of at least some of touch sensing signals before each of touch sensing signals detected from the at least two touch electrodes are converted into a digital sensing value. The present invention enables quick touch sensing.Type: ApplicationFiled: November 28, 2017Publication date: May 31, 2018Applicant: LG DISPLAY CO., LTD.Inventor: Sojung JUNG
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Patent number: 9927929Abstract: A touch sensing system and a method for driving the same. The touch sensing system includes a pen with a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes substantially perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit. The first touch driving circuit supplies a resonant inductive signal to the XY electrodes, analyzes a resonance signal received through the antenna, and decides a location and a pen pressure of the pen. The resonant inductive signal includes N periods each having a different duration, and wherein N is a positive integer equal to or greater than 2.Type: GrantFiled: October 30, 2014Date of Patent: March 27, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Dongjo Park, Sojung Jung
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Patent number: 9600093Abstract: A touch sensing system includes a pen including a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit which transmits a resonant inductive signal to the pen through electric coupling and to receive a resonance signal from the pen through the antenna.Type: GrantFiled: September 26, 2014Date of Patent: March 21, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Dongjo Park, Sojung Jung
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Patent number: 9594440Abstract: A touch sensing system includes a pen including at least one resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit which supplies a resonant inductive signal to the XY electrodes, decides a location of the pen based on a resonance magnitude of a resonance signal received through the antenna, and decides a pen pressure of the pen based on a resonant frequency of the resonant circuit and an adjacent frequency of the resonant frequency measured while varying a frequency of the resonant inductive signal.Type: GrantFiled: September 25, 2014Date of Patent: March 14, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Dongjo Park, Sojung Jung
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Publication number: 20150123940Abstract: A touch sensing system and a method for driving the same. The touch sensing system includes a pen with a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes substantially perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit. The first touch driving circuit supplies a resonant inductive signal to the XY electrodes, analyzes a resonance signal received through the antenna, and decides a location and a pen pressure of the pen. The resonant inductive signal includes N periods each having a different duration, and wherein N is a positive integer equal to or greater than 2.Type: ApplicationFiled: October 30, 2014Publication date: May 7, 2015Inventors: Dongjo PARK, Sojung Jung
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Publication number: 20150091856Abstract: A touch sensing system includes a pen including at least one resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit which supplies a resonant inductive signal to the XY electrodes, decides a location of the pen based on a resonance magnitude of a resonance signal received through the antenna, and decides a pen pressure of the pen based on a resonant frequency of the resonant circuit and an adjacent frequency of the resonant frequency measured while varying a frequency of the resonant inductive signal.Type: ApplicationFiled: September 25, 2014Publication date: April 2, 2015Inventors: DONGJO PARK, SOJUNG JUNG