Patents by Inventor Myungho SHIN
Myungho SHIN 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: 20230376143Abstract: A display device can include a display panel including a gate line, a data line, and a pixel connected to the gate line and the data line; a plurality of touch electrodes; and a touch sensing circuit configured to supply a first touch driving signal to a first touch electrode in a first touch time section of a first frame, the first frame including a first display time section and the first touch time section, and supply a second touch driving signal to the first touch electrode in a second touch time section of a second frame, the second frame including a second display time section and the second touch time section. Also, a frequency of the first touch driving signal supplied to the first touch electrode is different from a frequency of the second touch driving signal applied to the first touch electrode.Type: ApplicationFiled: August 2, 2023Publication date: November 23, 2023Applicant: LG DISPLAY CO., LTD.Inventor: MyungHo SHIN
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Patent number: 11755142Abstract: A touch sensing circuit can include a plurality of touch electrodes; and a touch circuit configured to supply at least one touch driving signal to at least one of the plurality of touch electrodes, in which the at least one touch driving signal includes a first touch driving signal and a second touch driving signal, and the first touch driving signal has a first frequency in a first touch period included in a first frame, and the second touch driving signal has a second frequency different from the first frequency in a second touch period included in a second frame subsequent to the first frame.Type: GrantFiled: August 30, 2021Date of Patent: September 12, 2023Assignee: LG DISPLAY CO., LTD.Inventor: MyungHo Shin
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Publication number: 20210397294Abstract: A touch sensing circuit can include a plurality of touch electrodes; and a touch circuit configured to supply at least one touch driving signal to at least one of the plurality of touch electrodes, in which the at least one touch driving signal includes a first touch driving signal and a second touch driving signal, and the first touch driving signal has a first frequency in a first touch period included in a first frame, and the second touch driving signal has a second frequency different from the first frequency in a second touch period included in a second frame subsequent to the first frame.Type: ApplicationFiled: August 30, 2021Publication date: December 23, 2021Applicant: LG DISPLAY CO., LTD.Inventor: MyungHo SHIN
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Patent number: 11126302Abstract: A touch device can include a plurality of touch electrodes including a first touch electrode and a second touch electrode; and a touch sensing circuit configured to supply a touch driving signal to at least one of the plurality of touch electrodes in a touch period, the touch period including a first touch period and a second touch period, in which the touch driving signal includes a first touch driving signal or a second touch driving signal; and the touch sensing circuit can supply the first touch driving signal having a first frequency to the first touch electrode for sensing a touch in the first touch period, supply a first load-free driving signal having the first frequency to the second touch electrode in the first touch period, supply the second touch driving signal having a second frequency to the second touch electrode for sensing a touch in the second touch period, and supply a second load-free driving signal having the second frequency to the first touch electrode in the second touch period.Type: GrantFiled: February 3, 2020Date of Patent: September 21, 2021Assignee: LG DISPLAY CO., LTD.Inventor: MyungHo Shin
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Patent number: 11079876Abstract: Embodiments of the present disclosure relate to a touch display device, a touch driving circuit, and a touch driving method, and more specifically, to a touch display device, a touch driving circuit, and a touch driving method for enabling a signal-to-noise ratio (SNR) and sensitivity of touch sensing to be improved by implementing a code division sensing effect for the self-capacitance sensing scheme.Type: GrantFiled: December 8, 2020Date of Patent: August 3, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Jaehun Jun, HyeongWon Kang, MyungHo Shin
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Publication number: 20210200415Abstract: Embodiments of the present disclosure relate to a touch display device, a touch driving circuit, and a touch driving method, and more specifically, to a touch display device, a touch driving circuit, and a touch driving method for enabling a signal-to-noise ratio (SNR) and sensitivity of touch sensing to be improved by implementing a code division sensing effect for the self-capacitance sensing scheme.Type: ApplicationFiled: December 8, 2020Publication date: July 1, 2021Inventors: Jaehun JUN, HyeongWon KANG, MyungHo SHIN
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Publication number: 20200174617Abstract: A touch device can include a plurality of touch electrodes including a first touch electrode and a second touch electrode; and a touch sensing circuit configured to supply a touch driving signal to at least one of the plurality of touch electrodes in a touch period, the touch period including a first touch period and a second touch period, in which the touch driving signal includes a first touch driving signal or a second touch driving signal; and the touch sensing circuit can supply the first touch driving signal having a first frequency to the first touch electrode for sensing a touch in the first touch period, supply a first load-free driving signal having the first frequency to the second touch electrode in the first touch period, supply the second touch driving signal having a second frequency to the second touch electrode for sensing a touch in the second touch period, and supply a second load-free driving signal having the second frequency to the first touch electrode in the second touch period.Type: ApplicationFiled: February 3, 2020Publication date: June 4, 2020Applicant: LG DISPLAY CO., LTD.Inventor: MyungHo SHIN
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Patent number: 10572055Abstract: Discussed are a driving method, a touch sensing circuit, a display panel, and a touch display device in which touch driving of driving touch electrodes using a multi-frequency driving method while modulating a frequency of a touch driving signal of a pulse type. The touch driving signal drives at least one touch electrode and senses a touch or a touch position in touch sections for a touch mode. Each of the touch sections for the touch mode includes k or more unit touch sections. The frequency of the touch driving signal output in at least one unit touch section is different from the frequency of the touch driving signal output in another unit touch section. Accordingly, it is possible to enable touch sensing and to suppress an EMI phenomenon which may occur due to the touch driving signal.Type: GrantFiled: December 21, 2016Date of Patent: February 25, 2020Assignee: LG DISPLAY CO., LTD.Inventor: MyungHo Shin
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Patent number: 10042470Abstract: A touch sensing method, a touch sensing circuit, and a touch display device perform multifrequency touch driving by varying the frequencies of touch driving signals when sensing a touch or a touched position by outputting pulse-type touch driving by which one or more touch electrodes among a number of touch electrodes disposed on a display panel are driven sequentially. Undesired parasitic capacitance that would otherwise be caused by touch driving signals is prevented from occurring, and EMI influence is reduced.Type: GrantFiled: December 28, 2016Date of Patent: August 7, 2018Assignee: LG Display Co., LTD.Inventors: MyungHo Shin, SungUk Byun, YongWoo Choi, MinWoo Hwang, KiYong Kim, Youngho Kwon, Kyungjin Jang, JaeKyu Park
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Publication number: 20180004343Abstract: Discussed are a driving method, a touch sensing circuit, a display panel, and a touch display device in which touch driving of driving touch electrodes using a multi-frequency driving method while modulating a frequency of a touch driving signal of a pulse type. The touch driving signal drives at least one touch electrode and senses a touch or a touch position in touch sections for a touch mode. Each of the touch sections for the touch mode includes k or more unit touch sections. The frequency of the touch driving signal output in at least one unit touch section is different from the frequency of the touch driving signal output in another unit touch section. Accordingly, it is possible to enable touch sensing and to suppress an EMI phenomenon which may occur due to the touch driving signal.Type: ApplicationFiled: December 21, 2016Publication date: January 4, 2018Applicant: LG DISPLAY CO., LTD.Inventor: MyungHo SHIN
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Publication number: 20170300165Abstract: A touch sensing method, a touch sensing circuit, and a touch display device perform multifrequency touch driving by varying the frequencies of touch driving signals when sensing a touch or a touched position by outputting pulse-type touch driving by which one or more touch electrodes among a number of touch electrodes disposed on a display panel are driven sequentially. Undesired parasitic capacitance that would otherwise be caused by touch driving signals is prevented from occurring, and EMI influence is reduced.Type: ApplicationFiled: December 28, 2016Publication date: October 19, 2017Inventors: MyungHo SHIN, SungUk BYUN, YongWoo CHOI, MinWoo HWANG, KiYong KIM, Youngho KWON, Kyungjin JANG, JaeKyu PARK
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Patent number: 9619073Abstract: A touch screen driver and method for driving the same are disclosed. The touch screen driver includes a Tx driving circuit which sequentially supplies a pair of out-of-phase composed of a first driving signal and a second driving signal which has a phase difference of 180° with respect to the first driving signal and the second driving signal driving signals to Tx lines, wherein the first signal and the second signal are simultaneously supplied to the adjacent Tx lines, respectively; and an Rx driving circuit which samples a charge of the touch sensor received through the Rx lines coupled with the Tx lines and converts the sampled charge into digital data.Type: GrantFiled: September 25, 2012Date of Patent: April 11, 2017Assignee: LG Display Co., Ltd.Inventors: Myungho Shin, Jiho Cho, Jungtae Bae
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Patent number: 9335861Abstract: A touch sensing system and a driving method thereof are provided. The touch sensing system includes: a touch screen drive circuit which senses a change in the amount of electric charge in touch sensors during a sensing period, generates raw data and temporarily stores it in a buffer memory, transmits the raw data read out from the buffer memory to an algorithm execution unit during a raw data transmission period, and calculates the coordinates of touch input by the algorithm execution unit during an algorithm execution period. The touch screen drive circuit controls the amount of data stored in the buffer memory and the start timing of a read operation to make the sensing period and the raw data transmission period overlap each other.Type: GrantFiled: October 21, 2014Date of Patent: May 10, 2016Assignee: LG Display Co., Ltd.Inventors: Myungho Shin, Dongkyun Lim, Seunghwan Yoon
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Patent number: 9069425Abstract: A touch sensing device includes a touch screen including Tx lines, Rx lines crossing the Tx lines, and touch sensors formed between the Tx lines and the Rx lines, and a touch screen driving circuit which senses all the touch sensors of the touch screen in a first sensing step to detect the presence or absence of a touch input, and then again senses the touch sensors, in which the touch input is detected as a first sensing result, in a second sensing step to detect a position of the touch input. When there is no touch sensor, in which the touch input is detected as the first sensing result, the touch screen driving circuit repeats the first sensing step.Type: GrantFiled: August 21, 2012Date of Patent: June 30, 2015Assignee: LG Display Co., Ltd.Inventors: Myungho Shin, Jonggu Heo, Suwon Lee, Yoonnara Jang, Younggyu Kim
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Publication number: 20150109227Abstract: A touch sensing system and a driving method thereof are provided. The touch sensing system includes: a touch screen drive circuit which senses a change in the amount of electric charge in touch sensors during a sensing period, generates raw data and temporarily stores it in a buffer memory, transmits the raw data read out from the buffer memory to an algorithm execution unit during a raw data transmission period, and calculates the coordinates of touch input by the algorithm execution unit during an algorithm execution period. The touch screen drive circuit controls the amount of data stored in the buffer memory and the start timing of a read operation to make the sensing period and the raw data transmission period overlap each other.Type: ApplicationFiled: October 21, 2014Publication date: April 23, 2015Applicant: LG DISPLAY CO., LTD.Inventors: Myungho SHIN, Dongkyun LIM, Seunghwan YOON
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Patent number: 8730208Abstract: A touch screen apparatus and a driving method thereof are provided. The touch screen drive circuit performs a setup operation for selecting Tx lines to be supplied with the drive signal and Rx lines to receive the voltages of the touch sensors, a sensing operation for supplying a drive signal to the Tx lines and receiving and sampling touch sensor voltages through the Rx lines, an ADC operation for converting the sampled voltages into digital data, a coordinate detection operation for analyzing the digital data by a preset touch detection algorithm and estimating the coordinates of a touch input position, and a data transmission operation for transmitting touch coordinate data comprising the coordinates to an external system. At least two operations among the setup operation, the sensing operation, and the ADC operation are performed in parallel.Type: GrantFiled: August 13, 2012Date of Patent: May 20, 2014Assignee: LG Display Co., Ltd.Inventors: Myungho Shin, Jonggu Heo, Kyounghwan Kim, Younggyu Kim
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Publication number: 20130057507Abstract: A touch screen apparatus and a driving method thereof are provided. The touch screen drive circuit performs a setup operation for selecting Tx lines to be supplied with the drive signal and Rx lines to receive the voltages of the touch sensors, a sensing operation for supplying a drive signal to the Tx lines and receiving and sampling touch sensor voltages through the Rx lines, an ADC operation for converting the sampled voltages into digital data, a coordinate detection operation for analyzing the digital data by a preset touch detection algorithm and estimating the coordinates of a touch input position, and a data transmission operation for transmitting touch coordinate data comprising the coordinates to an external system. At least two operations among the setup operation, the sensing operation, and the ADC operation are performed in parallel.Type: ApplicationFiled: August 13, 2012Publication date: March 7, 2013Inventors: Myungho SHIN, Jonggu HEO, Kyounghwan KIM, Younggyu KIM
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Publication number: 20130050116Abstract: A touch sensing device includes a touch screen including Tx lines, Rx lines crossing the Tx lines, and touch sensors formed between the Tx lines and the Rx lines, and a touch screen driving circuit which senses all the touch sensors of the touch screen in a first sensing step to detect the presence or absence of a touch input, and then again senses the touch sensors, in which the touch input is detected as a first sensing result, in a second sensing step to detect a position of the touch input. When there is no touch sensor, in which the touch input is detected as the first sensing result, the touch screen driving circuit repeats the first sensing step.Type: ApplicationFiled: August 21, 2012Publication date: February 28, 2013Inventors: Myungho SHIN, Jonggu HEO, Suwon LEE, Yoonnara JANG, Younggyu KIM