Patents by Inventor Dae Soo Kim
Dae Soo Kim 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: 11922717Abstract: A display device includes: a display panel including a light emitting element and a photosensitive element; an input sensor comprising a sensing electrode on the display panel; and an anti-reflection layer on the input sensor. The anti-reflection layer includes: a light shielding pattern having a first opening corresponding to the light emitting element and a second opening corresponding to the photosensitive element. The sensing electrode includes a plurality of line portions, the plurality of line portions includes a first line portion overlapping the light shielding pattern and arranged between the first opening and the second opening on a plane. S distance between the first line portion and an edge of the second opening is less than a distance between the first line portion and an edge of the first opening.Type: GrantFiled: January 26, 2023Date of Patent: March 5, 2024Assignee: Samsung Display Co., Ltd.Inventors: Kwang Soo Bae, Gee-Bum Kim, Bokwang Song, Dae-Young Lee, Min Oh Choi
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Patent number: 11924988Abstract: A display apparatus including a display and a supporter. The supporter being mounted on the display and configured to support the display and rotate the display module between a first position and a second position. The supporter including a drive motor, a first gear, and a detection sensor. The drive motor configured to supply a driving force to rotate the display. The first gear configured to rotate together with the display by receiving the driving force from the drive motor. The detection sensor configured to detect a rotation amount of a second gear configured to rotate in with the first gear.Type: GrantFiled: December 23, 2022Date of Patent: March 5, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun Yong Choi, Young Chul Kim, Ji Su Kim, Hun Sung Kim, Sung Yong Park, Jin Soo Shin, Dae Sik Yoon, Yong Yeon Hwang
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Publication number: 20240071545Abstract: A method of operating a memory device includes reading a first page of memory cells containing at least one worn-out memory cell therein using a read voltage, from a first memory block, and reading a second page of memory cells, which extends adjacent to the first page in the first memory block, using the read voltage. An operation is performed to determine a match rate between a position of a column including a “0” bit in the first page with a position of a column including a “0” bit in the second page. Thereafter, the second page is read by adjusting a read pass voltage applied to a word line of another page in the first memory block, when the match rate exceeds a threshold match rate.Type: ApplicationFiled: April 18, 2023Publication date: February 29, 2024Inventors: Seungjun Oh, Seong Geon Lee, Dae-Won Kim, Kyungduk Lee, Youn-Soo Cheon
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Patent number: 11874330Abstract: A battery management apparatus is configured to diagnose a state of a battery cell based on a capacity-voltage differential profile. Specifically, the battery management apparatus diagnoses a state of the battery cell according to a change pattern of a peak associated with a positive electrode reaction area and a peak associated with an available lithium loss in the capacity-voltage differential profile. The state of the battery cell may be diagnosed in real time even while the battery cell is in operation. In addition, it is possible to independently diagnose whether the positive electrode reaction area of the battery cell is reduced and whether available lithium is lost.Type: GrantFiled: September 9, 2020Date of Patent: January 16, 2024Inventors: Ji-Yeon Kim, Dae-Soo Kim, Young-Deok Kim
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Publication number: 20230333174Abstract: An apparatus and method for diagnosing a state of a battery in various aspects based on a differential profile respectively obtained in a situation where the battery is charged and discharged. Since the state of the battery is diagnosed by considering both the first differential profile related to the charging of the battery and the second differential profile related to the discharging of the battery, there is an advantage of diagnosing the state of the battery more accurately.Type: ApplicationFiled: April 29, 2021Publication date: October 19, 2023Applicant: LG Energy Solution, Ltd.Inventors: Hyun-Jun Choi, Young-Deok Kim, Dae-Soo Kim, Su-Won Jee
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Publication number: 20230296688Abstract: A battery diagnosing apparatus includes a measuring unit configured to measure a current, a voltage and an OCV of a battery a resistance estimating unit configured to estimate a resistance of the battery based on the current and the voltage measured by the measuring unit and a control unit configured to calculate a voltage deviation for a criterion OCV set to correspond to the battery and the OCV measured by the measuring unit, calculate a resistance deviation for a criterion resistance set to correspond to the battery and the resistance estimated by the resistance estimating unit, and diagnose a state of the battery based on a voltage increase/decrease pattern for the voltage deviation and a resistance increase/decrease pattern for the resistance deviation.Type: ApplicationFiled: April 1, 2022Publication date: September 21, 2023Applicant: LG Energy Solution, Ltd.Inventors: Young-Deok Kim, Dae-Soo Kim
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Patent number: 11756964Abstract: A method for etching an insulating layer includes: sequentially forming a first gate insulating layer, an amorphous silicon layer, a first interlayer insulating layer, and a second interlayer insulating layer on a substrate; applying a photoresist on the second interlayer insulating layer, and patterning the photoresist through a photo-process; first etching the second interlayer insulating layer and the first interlayer insulating layer until at least a portion of the amorphous silicon layer is exposed by using the patterned photoresist as a mask; second etching the second interlayer insulating layer and the first interlayer insulating layer; third etching the amorphous silicon layer; and fourth etching the first gate insulating layer, wherein an etching gas used in the second etching includes a material having a higher etching selection ratio of the first and second interlayer insulating layers to the amorphous silicon layer than an etching gas used in the first etching.Type: GrantFiled: March 25, 2021Date of Patent: September 12, 2023Assignee: Samsung Display Co., Ltd.Inventors: Dae Soo Kim, Yu-Gwang Jeong, Sung Won Cho
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Publication number: 20230266400Abstract: A battery diagnosing apparatus according to an embodiment includes a measuring unit configured to measure an open circuit voltage (OCV) of a battery after charging of the battery is finished and measure a resistance of the battery while the battery is discharged for a predetermined time after the charging of the battery is finished; and a control unit configured to receive voltage information for the OCV and resistance information for the resistance from the measuring unit, calculate a voltage deviation between the OCV and a criterion voltage preset for the battery, calculate a resistance deviation between the resistance and a criterion resistance preset for the battery, and diagnose whether degradation of the battery is accelerated based on the voltage deviation and the resistance deviation.Type: ApplicationFiled: March 22, 2022Publication date: August 24, 2023Applicant: LG Energy Solution, Ltd.Inventors: Young-Deok Kim, Dae-Soo Kim, Soon-Ju Choi
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Publication number: 20230236262Abstract: A secondary battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal of the secondary battery, including a memory unit configured to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, a voltage measuring unit configured to measure a voltage of a target battery during a charge or discharge process, and a processor configured to generate a charge and discharge measurement profile based on the voltage, compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile with the generated charge and discharge measurement profile, and determine a positive electrode adjustment profile and a negative electrode adjustment profile so that an error between the simulation profile and the charge and discharge measurement profile is within a predetermined level.Type: ApplicationFiled: December 3, 2021Publication date: July 27, 2023Applicant: LG Energy Solution, Ltd.Inventors: Soon-Ju Choi, Dae-Soo Kim, Young-Deok Kim, Su-Won Jee, Hyun-Jun Choi
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Publication number: 20230223510Abstract: The present invention relates to a secondary battery comprising an electrode assembly. The electrode assembly comprises: a first unit electrode in which a plurality of first electrodes entirely made of a first electrode mixture having a solid shape are connected to each other; a second unit electrode in which a plurality of second electrodes entirely made of a second electrode mixture having a solid shape are connected to each other; a separator interposed between the first unit electrode and the second unit electrode; and an electrode tab comprising a plurality of first electrode tab provided on the first unit electrode and a plurality of second electrode tab provided on the second unit electrode.Type: ApplicationFiled: March 23, 2023Publication date: July 13, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Dae Soo KIM, Young Deok KIM, Song Yi HAN
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Publication number: 20230191942Abstract: A battery management system includes a sensor to sense voltage and current of a battery, memory to store over-potential management information including reference peak and reference peak voltage values, and a controller to command constant-current charging using a maximum allowable C-rate to a charging circuit when the reference peak value is equal to or larger than a threshold peak value, in response to a charge request, determine a differential capacity curve indicating a correlation between the voltage and differential capacity of the battery within a range based on the sensed voltage and current during the charging, determine main peak and main peak voltage values indicating differential capacity and voltage of a peak of the differential capacity curve, respectively. and update the reference peak and reference peak voltage values to equal the main peak and main peak voltage values, when the main peak value is less than the threshold peak value.Type: ApplicationFiled: August 13, 2021Publication date: June 22, 2023Applicant: LG Energy Solution, Ltd.Inventors: A-Ming Cha, Yoon-Jung Bae, Dae-Soo Kim, Bo-Mi Lim, Hyun-Jun Choi
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Publication number: 20230194620Abstract: An apparatus for diagnosing a state of a battery includes a profile obtaining unit configured to obtain a voltage profile of a battery for voltage and capacity of the battery, and a control unit configured to obtain a differential profile for the voltage and the capacity from the voltage profile, select a plurality of peaks included in a predetermined voltage section of the obtained differential profile, determine a first peak associated with a negative electrode and a second peak associated with a positive electrode among the plurality of selected peaks, compare the first peak and the second peak with a first reference peak and a second reference peak of a preset reference profile, respectively, and diagnose a state of the battery based on at least one of a efdifference between the first peak and the first reference peak or a efdifference between the second peak and the second reference peak.Type: ApplicationFiled: April 27, 2021Publication date: June 22, 2023Applicant: LG Energy Solution, Ltd.Inventors: Hyun-Jun Choi, Dae-Soo Kim, Young-Deok Kim, Bo-Mi Lim
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Patent number: 11662388Abstract: The present disclosure relates to an apparatus for estimating a battery free capacity, and more particularly, an apparatus for estimating a free capacity of a half cell of a battery. According to the present disclosure, it is possible to accurately estimate a free capacity of a half cell without inserting a reference electrode by revising an entire SOC region of a half cell by using an inflection point detected based on SOC-voltage data of a full cell and a half cell of the battery, respectively, and then estimating SOC-voltage data based on a SOC difference between the entire SOC regions before and after the revision.Type: GrantFiled: October 31, 2018Date of Patent: May 30, 2023Assignee: LG Energy Solution, Ltd.Inventors: Yoon-Jung Bae, Dae-Soo Kim, Ji-Yeon Kim, Dong-Kyu Kim, Jae-Hyun Lee, Jin-Hyung Lim, Young-Geun Choi
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Publication number: 20230160970Abstract: A battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal extracted from the secondary battery, including memory to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, a voltage sensor to measure a voltage of a target battery during a charge or discharge process, and a processor to generate a plurality of charge and discharge measurement profiles based on voltages measured at a plurality of different time points, compare each of the generated charge and discharge measurement profiles with a simulation profile obtained from the positive and negative electrode reference profiles, and determine positive and negative electrode adjustment profiles for each of the generated charge and discharge measurement profiles so that an error between each charge and discharge measurement profile and the simulation profile is within a predetermined level.Type: ApplicationFiled: December 3, 2021Publication date: May 25, 2023Applicant: LG Energy Solution, Ltd.Inventors: Soon-Ju Choi, Dae-Soo Kim, Young-Deok Kim, Su-Won Jee, Hyun-Jun Choi
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Patent number: 11641011Abstract: An electrode assembly comprising a first unit electrode in which a plurality of first electrodes entirely made of a first electrode mixture having a solid shape are connected to each other; a second unit electrode in which a plurality of second electrodes entirely made of a second electrode mixture having a solid shape are connected to each other; a separator interposed between the first unit electrode and the second unit electrode; and an electrode tab comprising a plurality of first electrode tab provided on the first unit electrode and a plurality of second electrode tab provided on the second unit electrode.Type: GrantFiled: June 27, 2019Date of Patent: May 2, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Dae Soo Kim, Young Deok Kim, Song Yi Han
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Publication number: 20230119100Abstract: An overvoltage characteristics evaluation apparatus for a battery includes a sensing unit to measure a current and a voltage of the battery, and a control unit to determine a measured capacity history and a measured voltage history of the battery during a discharge event executed subsequent to polarization-inducing pretreatment for the battery. The control unit determines a first measured voltage curve indicating a correlation between the measured capacity history and the measured voltage history, and a second measured voltage curve indicating a correlation between a depth of discharge history obtained by normalizing the measured capacity history to a total discharge capacity of the measured capacity history and the measured voltage history. The control unit determines a differential voltage curve by differentiating the measured voltage history.Type: ApplicationFiled: July 30, 2021Publication date: April 20, 2023Applicant: LG Energy Solution, Ltd.Inventors: Hyun-Jun Choi, Dae-Soo Kim, Young-Deok Kim, Su-Won Jee
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Publication number: 20230039356Abstract: A battery management apparatus includes: a profile generating unit configured to obtain a battery profile representing a correspondence between voltage and capacity of a battery and generate a differential profile representing a correspondence between a differential voltage for the capacity of the battery and the capacity or a correspondence between a differential capacity for the voltage of the battery and the voltage based on the obtained battery profile; and a control unit configured to receive the generated differential profile from the profile generating unit, determine a target peak included in the received differential profile according to a rule corresponding to a type of the received differential profile, and determine a state of the battery based on a behavior change of the target peak with respect to a reference peak preset to correspond to the type of the received differential profile.Type: ApplicationFiled: July 16, 2021Publication date: February 9, 2023Applicant: LG Energy Solution, Ltd.Inventors: Su-Won Jee, Dae-Soo Kim, Young-Deok Kim, Hyun-Jun Choi
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Publication number: 20230036332Abstract: A separator for a lithium secondary battery comprising a porous polymer substrate and a porous coating layer on at least one surface of the porous polymer substrate. The separator has an ionic conductivity of 4.75×10?5 S/cm or more, and the porous coating layer comprises an interstitial volume and a macro pore having a larger diameter than the interstitial volume. A method for manufacturing the separator is also disclosed. Accordingly, the separator has significantly improved ionic conductivity over commercial separators.Type: ApplicationFiled: December 21, 2020Publication date: February 2, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Dae-Soo KIM, Young-Deok KIM, Hyun-Jun CHOI, Seok-Koo KIM, Su-Won JEE
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Publication number: 20230033456Abstract: The present invention relates to an electrode assembly. The electrode comprises: a plurality of unit electrodes formed by connecting a plurality of electrodes made of an electrode mixture having a solid shape to each other; a separator interposed between the plurality of unit electrodes; and an electrode tab attached to the unit electrode, wherein the electrode tab comprises first and second electrode tabs, which are respectively attached to the unit electrodes and have different specific resistance.Type: ApplicationFiled: October 14, 2022Publication date: February 2, 2023Applicant: LG Energy Solution, LTD.Inventors: Dae Soo KIM, Young Deok KIM, Song Yi HAN
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Publication number: 20230023014Abstract: A battery management system comprising a positive electrode material exhibiting a phase transition behavior in a predetermined capacity range and a negative electrode material having plateau characteristics over the predetermined capacity range. The battery management system includes a sensing unit to output sensing information indicating a voltage and a current of the battery, and a control unit. The control unit determines a voltage curve indicating a correspondence relationship between a capacity of the battery and the voltage of the battery based on the sensing information collected during constant current charging or constant current discharging of the battery. The control unit determines a differential voltage curve based on the voltage curve. The control unit detects a peak of interest in a predetermined capacity range appearing in the differential voltage curve. The control unit determines a first capacity loss ratio of the battery based on a differential voltage of the peak of interest.Type: ApplicationFiled: April 19, 2021Publication date: January 26, 2023Applicant: LG Energy Solution, Ltd.Inventors: Hyun-Jun Choi, Young-Deok Kim, Dae-Soo Kim, Su-Won Jee