Patents by Inventor Seong-Joo Lee
Seong-Joo Lee 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: 20220013070Abstract: A digital-analog converter of the disclosure converts digital image data to generate analog data signals. The digital-analog converter includes a voltage divider which generates a plurality of gamma reference voltages based on a first reference voltage and a second reference voltage; a global ramp including a plurality of gamma decoders which generates a plurality of global gamma voltages based on the gamma reference voltages; a decoder which selects one of the global gamma voltages according to the digital image data to generate the analog data signals; and a ramp controller which turns off at least some of the gamma decoders based on the digital image data.Type: ApplicationFiled: February 3, 2021Publication date: January 13, 2022Inventors: Hyung Gun Ma, Oh Jo Kwon, Ji Woong Kim, Jun Yong Song, Seong Joo Lee, Sang Hyun Heo
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Publication number: 20210359699Abstract: A digital-to-analog converter (“DAC”) converts digital image data into analog image signals. The DAC includes a stage outputting different voltages to a first output terminal and a second output terminal based on a voltage supplied to a first input terminal, a voltage supplied to a second input terminal, and a first input bit. The stage includes a switch circuit including switches that are alternately turned on by a control signal, and outputting an intermediate output voltage to a third output terminal based on a first input voltage supplied to the first input terminal and a second input voltage supplied to the second input terminal, and a selector outputting one of the first input voltage and the second input voltage, and the intermediate output voltage.Type: ApplicationFiled: February 5, 2021Publication date: November 18, 2021Inventors: Seong Joo LEE, Oh Jo KWON, Gyeong Gu KANG, Seok Tae KOH, Joon Chul GOH, Hyun Sik KIM, Bong Hyun YOU
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Patent number: 11064900Abstract: Provided are an ultra-low field nuclear magnetic resonance device and a method for measuring an ultra-low field nuclear resonance image. The ultra-low field nuclear magnetic resonance device includes an AC power supply configured to supply a current to a measurement target in such a manner the current flows to the measurement target, magnetic field measurement means disposed adjacent to the measurement target, and measurement bias magnetic field generation means configured to apply a measurement bias magnetic field corresponding to a proton magnetic resonance frequency of the measurement target. A vibration frequency of the AC power supply matches the proton magnetic resonance frequency of the measurement target, and the magnetic field measurement means measures a nuclear magnetic resonance signal generated from the measurement target.Type: GrantFiled: April 3, 2017Date of Patent: July 20, 2021Assignee: Korea Research Institute of Standards and ScienceInventors: Seong-Joo Lee, Kiwoong Kim, Jeong-Hyun Shim, Kwon-Kyu Yu, Seong-min Hwang
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Publication number: 20210200363Abstract: A touch display panel having a display unit including a plurality of pixels, an encapsulation unit disposed on the display unit, a touch sensor unit including a plurality of touch sensors disposed on the encapsulation unit, a color filter layer disposed on the touch sensor unit, the color filter layer including a color filter and a black matrix, a touch routing line and a touch pad connected to each of the touch sensors, a crack prevention layer disposed in a bending area between the touch routing line and the touch pad, a touch link line configured to interconnect the touch routing line and the touch pad via the lower part of the crack prevention layer in the bending area, and a touch passivation layer disposed on each of the touch sensors and the touch link line.Type: ApplicationFiled: December 24, 2020Publication date: July 1, 2021Applicant: LG Display Co., Ltd.Inventors: Jin-Bok LEE, Jung-Ho BANG, Seong-Joo LEE
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Publication number: 20210134891Abstract: A display apparatus including two lines is provided. The two lines may extend in a first direction. A light-emitting device may be disposed between the two lines. Each line may be bent or extended in the direction of the device substrate which supports the light-emitting device. Thus, in the display apparatus, mixing of light emitted to the outside through the device substrate may be prevented. Therefore, in the display apparatus, the quality of realized image may be improved.Type: ApplicationFiled: December 15, 2020Publication date: May 6, 2021Inventors: Seong-Joo LEE, Jung-Ho BANG, Jung-Sun BEAK, Sun-Mi LEE, Tae-Hwan KIM, Hyeon-Chul IM
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Patent number: 10910457Abstract: A display apparatus including two lines is provided. The two lines may extend in a first direction. A light-emitting device may be disposed between the two lines. Each line may be bent or extended in the direction of the device substrate which supports the light-emitting device. Thus, in the display apparatus, mixing of light emitted to the outside through the device substrate may be prevented. Therefore, in the display apparatus, the quality of realized image may be improved.Type: GrantFiled: December 13, 2019Date of Patent: February 2, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Seong-Joo Lee, Jung-Ho Bang, Jung-Sun Beak, Sun-Mi Lee, Tae-Hwan Kim, Hyeon-Chul Im
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Patent number: 10795472Abstract: Disclosed is a display device which may achieve process simplification and cost reduction. The display device having touch sensors includes display pads arranged in a non-active area on a substrate and having a multilayer structure, an uppermost layer of the display pads is formed of a different material from conductive layers included in the touch sensors arranged on an encapsulation unit, and, thus, damage to the display pads during formation of the touch sensors may be prevented, process margin may be increased and high resolution may be implemented. Further, the touch sensors are arranged on the encapsulation unit without a separate attachment process and, thus, process simplification and cost reduction of the display device may be achieved.Type: GrantFiled: May 11, 2018Date of Patent: October 6, 2020Assignee: LG Display Co., Ltd.Inventors: Jung-Sun Beak, Seong-Joo Lee
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Patent number: 10775912Abstract: Disclosed is a display device having touch sensors which may reduce parasitic capacitance and a method of manufacturing the same. The display device includes a plurality of touch sensing lines respectively arranged so as to traverse a plurality of common electrode blocks forming an electric field with pixel electrodes, a lower planarization layer having openings in regions overlapping drain electrodes of thin film transistors, an upper planarization layer arranged between one of the pixel electrodes and the common electrode blocks, and the touch sensing lines so as to cover a side surface of the lower planarization layer, and an upper protective film arranged between the pixel electrodes and the common electrode blocks, and, thus, parasitic capacitance generated between the touch sensing lines and the common electrode blocks may be reduced without reduction in liquid crystal capacitance and storage capacitance.Type: GrantFiled: December 12, 2018Date of Patent: September 15, 2020Assignee: LG Display Co., Ltd.Inventors: Jung-Sun Beak, Seung-Hee Nam, Jung-Ho Bang, Seong-Joo Lee
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Patent number: 10763313Abstract: Disclosed is a display device which may achieve process simplification and cost reduction. In the display device having touch sensors, the touch sensors are arranged on an encapsulation unit arranged to cover light emitting elements, and an anti-reflective film including a photosensitive material and a black pigment is arranged on routing lines connected to the touch sensors and a conductive layer arranged as an uppermost layer among a plurality of conductive layers included in the touch sensors. Thereby, visibility of external light may be improved by the anti-reflective film, and the touch electrodes are arranged on an encapsulation unit without a separate attachment process and, thus, process simplification and cost reduction of the display device may be achieved.Type: GrantFiled: May 11, 2018Date of Patent: September 1, 2020Assignee: LG Display Co., Ltd.Inventors: Jung-Sun Beak, Seong-Joo Lee
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Publication number: 20200194511Abstract: A display apparatus including two lines is provided. The two lines may extend in a first direction. A light-emitting device may be disposed between the two lines. Each line may be bent or extended in the direction of the device substrate which supports the light-emitting device. Thus, in the display apparatus, mixing of light emitted to the outside through the device substrate may be prevented. Therefore, in the display apparatus, the quality of realized image may be improved.Type: ApplicationFiled: December 13, 2019Publication date: June 18, 2020Inventors: Seong-Joo LEE, Jung-Ho BANG, Jung-Sun BEAK, Sun-Mi LEE, Tae-Hwan KIM, Hyeon-Chul IM
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Patent number: 10672847Abstract: A display device includes: thin film transistors (TFTs) on a substrate, pixel electrodes (PEs) respectively connected to the TFTs, common electrode blocks (CEBs) on the substrate, each CEB forming an electric field with a respective PE, touch sensing lines (TSLs) respectively connected to the CEBs, a lower planarization layer (PL) between the TFTs and the TSLs, an upper PL between the TSLs and one of: the PEs and the CEBs, an upper protective film between the PEs and the CEBs, and pixel contact holes extending through the lower PL and the upper PL to expose respective drain electrodes of the TFTs, wherein a side surface of each of the lower PL and the upper PL, exposed through the pixel contact holes, contacts one of: the upper protective film and the PEs.Type: GrantFiled: December 4, 2018Date of Patent: June 2, 2020Assignee: LG Display Co., Ltd.Inventors: Seung-Hee Nam, Jung-Ho Bang, Jung-Sun Beak, Seong-Joo Lee
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Publication number: 20200152368Abstract: A fluid-cooled electromagnet includes an upper housing, a lower housing vertically aligned with the upper housing, a plurality of pancake coils disposed between the upper housing and the lower housing to be spaced apart from each other and sequentially stacked to have a washer shape, and at least one spacer, disposed between the upper housing and the lower housing, accommodating the pancake coils at regular intervals.Type: ApplicationFiled: September 18, 2019Publication date: May 14, 2020Inventors: Seong Min HWANG, Jeong Hyun SHIM, Ingo HILSCHENZ, Seong-Joo LEE, Kiwoong KIM
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Publication number: 20200052049Abstract: Disclosed are an organic light emitting display device to improve optical efficiency and prevent deterioration in reliability of thin film transistors, and a method of manufacturing the same. The organic light emitting display device includes a mirror wall which is disposed on a substrate such that the mirror wall surrounds a light emitting area of each sub-pixel where a light emitting element is disposed, thus preventing total reflection of light produced in the light emitting element and improving optical efficiency by reflecting light travelling toward a non-emitting area to be directed to the light emitting area.Type: ApplicationFiled: October 17, 2019Publication date: February 13, 2020Inventors: Seong-Joo LEE, Jeong-Oh KIM, Jung-Sun BEAK
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Patent number: 10490613Abstract: Disclosed are an organic light emitting display device to improve optical efficiency and prevent deterioration in reliability of thin film transistors, and a method of manufacturing the same. The organic light emitting display device includes a mirror wall which is disposed on a substrate such that the mirror wall surrounds a light emitting area of each sub-pixel where a light emitting element is disposed, thus preventing total reflection of light produced in the light emitting element and improving optical efficiency by reflecting light travelling toward a non-emitting area to be directed to the light emitting area.Type: GrantFiled: November 28, 2017Date of Patent: November 26, 2019Assignee: LG Display Co., Ltd.Inventors: Seong-Joo Lee, Jeong-Oh Kim, Jung-Sun Beak
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Publication number: 20190179440Abstract: Disclosed is a display device having touch sensors which may reduce parasitic capacitance and a method of manufacturing the same. The display device includes a plurality of touch sensing lines respectively arranged so as to traverse a plurality of common electrode blocks forming an electric field with pixel electrodes, a lower planarization layer having openings in regions overlapping drain electrodes of thin film transistors, an upper planarization layer arranged between one of the pixel electrodes and the common electrode blocks, and the touch sensing lines so as to cover a side surface of the lower planarization layer, and an upper protective film arranged between the pixel electrodes and the common electrode blocks, and, thus, parasitic capacitance generated between the touch sensing lines and the common electrode blocks may be reduced without reduction in liquid crystal capacitance and storage capacitance.Type: ApplicationFiled: December 12, 2018Publication date: June 13, 2019Inventors: Jung-Sun BEAK, Seung-Hee NAM, Jung-Ho BANG, Seong-Joo LEE
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Publication number: 20190172882Abstract: A display device includes: thin film transistors (TFTs) on a substrate, pixel electrodes (PEs) respectively connected to the TFTs, common electrode blocks (CEBs) on the substrate, each CEB forming an electric field with a respective PE, touch sensing lines (TSLs) respectively connected to the CEBs, a lower planarization layer (PL) between the TFTs and the TSLs, an upper PL between the TSLs and one of: the PEs and the CEBs, an upper protective film between the PEs and the CEBs, and pixel contact holes extending through the lower PL and the upper PL to expose respective drain electrodes of the TFTs, wherein a side surface of each of the lower PL and the upper PL, exposed through the pixel contact holes, contacts one of: the upper protective film and the PEs.Type: ApplicationFiled: December 4, 2018Publication date: June 6, 2019Applicant: LG Display Co., Ltd.Inventors: Seung-Hee Nam, Jung-Ho Bang, Jung-Sun Beak, Seong-Joo Lee
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Publication number: 20190082997Abstract: Provided are an ultra-low field nuclear magnetic resonance device and a method for measuring an ultra-low field nuclear resonance image. The ultra-low field nuclear magnetic resonance device includes an AC power supply configured to supply a current to a measurement target in such a manner the current flows to the measurement target, magnetic field measurement means disposed adjacent to the measurement target, and measurement bias magnetic field generation means configured to apply a measurement bias magnetic field corresponding to a proton magnetic resonance frequency of the measurement target. A vibration frequency of the AC power supply matches the proton magnetic resonance frequency of the measurement target, and the magnetic field measurement means measures a nuclear magnetic resonance signal generated from the measurement target.Type: ApplicationFiled: April 3, 2017Publication date: March 21, 2019Inventors: Seong-Joo LEE, Kiwoong KIM, Jeong-Hyun SHIM, Kwon-Kyu YU, Seong-min HWANG
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Patent number: 10162028Abstract: Provided is a low magnetic field and ultra-low magnetic field NMR and MRI apparatus. The low magnetic field and ultra-low magnetic field NMR and MRI apparatus includes a SQUID sensor and a prepolarization magnetic field coil. The prepolarization magnetic field coil generates a prepolarization magnetic field to polarize a sample. The prepolarization magnetic coil generates a counter pulse in a direction opposite to that of the prepolarization magnetic field immediately before or immediately after the prepolarization magnetic field is generated. The counter pulse demagnetizes wanted magnetization including that of the prepolarization magnetic field coil itself.Type: GrantFiled: February 10, 2015Date of Patent: December 25, 2018Assignee: Korea Research Institute of Standards and ScienceInventors: Seong-min Hwang, Kiwoong Kim, Kwon-Kyu Yu, Seong-Joo Lee, Jeong-Hyun Shim
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Publication number: 20180331160Abstract: Disclosed is a display device which may achieve process simplification and cost reduction. In the display device having touch sensors, the touch sensors are arranged on an encapsulation unit arranged to cover light emitting elements, and an anti-reflective film including a photosensitive material and a black pigment is arranged on routing lines connected to the touch sensors and a conductive layer arranged as an uppermost layer among a plurality of conductive layers included in the touch sensors. Thereby, visibility of external light may be improved by the anti-reflective film, and the touch electrodes are arranged on an encapsulation unit without a separate attachment process and, thus, process simplification and cost reduction of the display device may be achieved.Type: ApplicationFiled: May 11, 2018Publication date: November 15, 2018Inventors: Jung-Sun BEAK, Seong-Joo LEE
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Publication number: 20180329554Abstract: Disclosed is a display device which may achieve process simplification and cost reduction. The display device having touch sensors includes display pads arranged in a non-active area on a substrate and having a multilayer structure, an uppermost layer of the display pads is formed of a different material from conductive layers included in the touch sensors arranged on an encapsulation unit, and, thus, damage to the display pads during formation of the touch sensors may be prevented, process margin may be increased and high resolution may be implemented. Further, the touch sensors are arranged on the encapsulation unit without a separate attachment process and, thus, process simplification and cost reduction of the display device may be achieved.Type: ApplicationFiled: May 11, 2018Publication date: November 15, 2018Inventors: Jung-Sun BEAK, Seong-Joo LEE