Patents by Inventor Ho-min Lim
Ho-min Lim 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: 11635850Abstract: Provided are a data processing device, a display device, and deterioration compensation method of the data processing device to determine a burn-in occurrence region by recognizing a user's touch in a display device including a touch function and accurately perform a degradation compensation on the burn-in occurrence region.Type: GrantFiled: November 17, 2021Date of Patent: April 25, 2023Assignee: LX SEMICON CO., LTD.Inventor: Ho Min Lim
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Publication number: 20220165221Abstract: Provided are a probe module for inspecting a display panel, a panel inspection apparatus including the same, and a panel correction method of the panel inspection apparatus, which are provided to correct a display panel selected as a defective display panel during manufacturing of the display panel, thereby improving manufacturing yield of the display panel.Type: ApplicationFiled: November 19, 2021Publication date: May 26, 2022Inventor: Ho Min Lim
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Publication number: 20220164061Abstract: Provided are a data processing device, a display device, and deterioration compensation method of the data processing device to determine a burn-in occurrence region by recognizing a user's touch in a display device including a touch function and accurately perform a degradation compensation on the burn-in occurrence region.Type: ApplicationFiled: November 17, 2021Publication date: May 26, 2022Inventor: Ho Min Lim
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Patent number: 9530353Abstract: An organic electroluminescent display device includes an organic electroluminescent diode receiving a driving voltage and a first ground voltage; first and second driving thin film transistors for providing a driving current to the organic electroluminescent diode; a first switching thin film transistor receiving a data voltage and switched by an nth scan signal; a second switching thin film transistor switched by a current providing signal; a third switching thin film transistor receiving a second ground voltage and switched by a selection signal; a fourth switching thin film transistor disposed among an output terminal of the second switching thin film transistor; and a first capacitor disposed among the output terminal of the first switching thin film transistor, the gate terminal of the first driving thin film transistor and the gate terminal of the second driving thin film transistor.Type: GrantFiled: August 28, 2013Date of Patent: December 27, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Seung-Tae Kim, Han-Jin Bae, Ho-Min Lim, Won-Kyu Ha, Hak-Su Kim
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Patent number: 9349317Abstract: Disclosed is an organic light emitting display device and a method of driving the same that can improve compensation performance of degradation of a driving TFT. A method of driving an organic light emitting display device comprises generating an estimated degradation value of a driving TFT by using accumulated data through input data counting; compensating all the pixels of a display panel by using a first gain value, which is initially set, and the estimated degradation value; generating a sensing value by sensing all or some of the pixels of the display panel after driving is performed for a certain time; generating a second gain value by compensating the first gain value if an error between the estimated degradation value and the sensing value is more than a reference value; generating compensation data by compensating the estimated degradation value by using the second gain value; and compensating all the pixels of the display panel by using the compensation data.Type: GrantFiled: October 17, 2013Date of Patent: May 24, 2016Assignee: LG Display Co., Ltd.Inventors: Tae Gung Kim, Kyeong Kun Jang, Ho Min Lim, Nari Kim, Myung-Gi Lim
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Patent number: 9135862Abstract: Disclosed is an organic light emitting display device, which is capable of compensating for variations in the characteristics of driving transistors, comprising a display panel including a plurality of pixels, each pixel having a driving transistor for operating a light emitting device to make the light emitting device emit light with a data current corresponding to a data voltage; a panel driver for detecting the characteristics of the driving transistors including at least one of mobility and threshold voltage of the driving transistor included in each pixel during a time period when there exists no user around the display panel, generating compensated input data by compensating input data according to the characteristics after the detection of the characteristics is completed, and generating data voltage through the use of the compensated input data; and a sensor for sensing whether or not there exists a user around the display panel, and supplying the sensing result to the panel driver.Type: GrantFiled: August 2, 2013Date of Patent: September 15, 2015Assignee: LG Display Co., Ltd.Inventors: Jeong Hyo Park, Byung Chul Ahn, Ho Min Lim
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Patent number: 8994707Abstract: Discussed are a display device and a method for controlling the same, which are capable of achieving a reduction in power consumption, through selective application of a charge share mode or a pre-charge mode in accordance with the swing width of a data voltage. The disclosed method includes the steps of determining a positive or negative polarity of input image data on the basis of reference data and outputting a pre-charge enable signal when two successive image data have the same polarity; supplying a pre-charge voltage to a corresponding output channel in response to the pre-enable signal; and converting the image data into a data voltage, supplying the converted data voltage to a corresponding data line through the corresponding output channel.Type: GrantFiled: December 21, 2012Date of Patent: March 31, 2015Assignee: LG Display Co., Ltd.Inventors: Jin-Hyoung Kim, Seung-Tae Kim, Ho-Min Lim
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Publication number: 20140176409Abstract: Disclosed is an organic light emitting display device and a method of driving the same that can improve compensation performance of degradation of a driving TFT. A method of driving an organic light emitting display device comprises generating an estimated degradation value of a driving TFT by using accumulated data through input data counting; compensating all the pixels of a display panel by using a first gain value, which is initially set, and the estimated degradation value; generating a sensing value by sensing all or some of the pixels of the display panel after driving is performed for a certain time; generating a second gain value by compensating the first gain value if an error between the estimated degradation value and the sensing value is more than a reference value; generating compensation data by compensating the estimated degradation value by using the second gain value; and compensating all the pixels of the display panel by using the compensation data.Type: ApplicationFiled: October 17, 2013Publication date: June 26, 2014Applicant: LG Display Co., Ltd.Inventors: Tae Gung Kim, Kyeong Kun Jang, Ho Min Lim, Nari Kim, Myung-Gi Lim
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Publication number: 20140152633Abstract: Disclosed is an organic light emitting display device, which is capable of compensating for variations in the characteristics of driving transistors, comprising a display panel including a plurality of pixels, each pixel having a driving transistor for operating a light emitting device to make the light emitting device emit light with a data current corresponding to a data voltage; a panel driver for detecting the characteristics of the driving transistors including at least one of mobility and threshold voltage of the driving transistor included in each pixel during a time period when there exists no user around the display panel, generating compensated input data by compensating input data according to the characteristics after the detection of the characteristics is completed, and generating data voltage through the use of the compensated input data; and a sensor for sensing whether or not there exists a user around the display panel, and supplying the sensing result to the panel driver.Type: ApplicationFiled: August 2, 2013Publication date: June 5, 2014Applicant: LG Display Co., Ltd.Inventors: Jeong Hyo PARK, Byung Chul AHN, Ho Min LIM
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Publication number: 20140055327Abstract: An organic electroluminescent display device includes an organic electroluminescent diode receiving a driving voltage and a first ground voltage; first and second driving thin film transistors for providing a driving current to the organic electroluminescent diode; a first switching thin film transistor receiving a data voltage and switched by an nth scan signal; a second switching thin film transistor switched by a current providing signal; a third switching thin film transistor receiving a second ground voltage and switched by a selection signal; a fourth switching thin film transistor disposed among an output terminal of the second switching thin film transistor; and a first capacitor disposed among the output terminal of the first switching thin film transistor, the gate terminal of the first driving thin film transistor and the gate terminal of the second driving thin film transistor.Type: ApplicationFiled: August 28, 2013Publication date: February 27, 2014Applicant: LG Display Co., Ltd.Inventors: Seung-Tae KIM, Hae-Jin BAE, Ho-Min LIM, Won-Kyu HA, Hak-Su KIM
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Patent number: 8547305Abstract: An organic electroluminescent display device includes an organic electroluminescent diode receiving a driving voltage and a first ground voltage; first and second driving thin film transistors for providing a driving current to the organic electroluminescent diode, each of the first and second driving thin film transistors receiving one of the driving voltage and the first ground voltage; a first switching thin film transistor receiving a data voltage and switched by an nth scan signal to output the data voltage; a second switching thin film transistor switched by a current providing signal to provide the one of the driving voltage and the first ground voltage to the second driving thin film transistor; a third switching thin film transistor receiving a second ground voltage and switched by a selection signal to output the second ground voltage to an output terminal of the first switching thin film transistor; a fourth switching thin film transistor disposed among an output terminal of the second switching thType: GrantFiled: May 15, 2009Date of Patent: October 1, 2013Assignee: LG Display Co., Ltd.Inventors: Seung-Tae Kim, Hae-Jin Bae, Ho-Min Lim, Won-Kyu Ha, Hak-Su Kim
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Patent number: 8232986Abstract: Disclosed herein are a light emitting display which can compensate for a threshold voltage of a driving switching element, and a method for driving the same. A light emitting display includes a pixel circuit that outputs a driving current corresponding to a data voltage from a data line using a scan signal, a first driving voltage and a second driving voltage; and a light emitting element that emits light by the driving current from the pixel circuit.Type: GrantFiled: December 17, 2008Date of Patent: July 31, 2012Assignee: LG Display Co., Ltd.Inventors: Jin Hyoung Kim, Woo Jin Nam, Ho Min Lim, Su Jin Baek, Jung Yoon Yi, Seung Tae Kim
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Patent number: 8054251Abstract: A method for driving a flat panel display to improve an image quality and a lifetime of the flat panel display is disclosed. The method for driving the flat panel display includes the steps of: a) storing electric-charges contained in a parasitic capacitor of a data line and a pixel-storage capacitor (Cst) in each pixel via a pixel transistor connected to the data line, which enters a floating state during a predetermined time other than a light-emitting time caused by a data-current writing operation, until a current voltage reaches a threshold voltage of the pixel transistor; and b) performing the writing of a data current corresponding to a pixel to be driven by the data line via the pixel transistor, such that the flat panel display emits light.Type: GrantFiled: May 17, 2006Date of Patent: November 8, 2011Assignee: LG Display Co., Ltd.Inventors: Seong Joong Kim, Ho Min Lim, Young Soo Han
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Publication number: 20100123700Abstract: An organic electroluminescent display device includes an organic electroluminescent diode receiving a driving voltage and a first ground voltage; first and second driving thin film transistors for providing a driving current to the organic electroluminescent diode, each of the first and second driving thin film transistors receiving one of the driving voltage and the first ground voltage; a first switching thin film transistor receiving a data voltage and switched by an nth scan signal to output the data voltage; a second switching thin film transistor switched by a current providing signal to provide the one of the driving voltage and the first ground voltage to the second driving thin film transistor; a third switching thin film transistor receiving a second ground voltage and switched by a selection signal to output the second ground voltage to an output terminal of the first switching thin film transistor; a fourth switching thin film transistor disposed among an output terminal of the second switching thType: ApplicationFiled: May 15, 2009Publication date: May 20, 2010Inventors: Seung-Tae Kim, Hae-Jin Bae, Ho-Min Lim, Won-Kyu Ha, Hak-Su Kim
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Publication number: 20090284519Abstract: Disclosed herein are a light emitting display which can compensate for a threshold voltage of a driving switching element, and a method for driving the same. A light emitting display includes a pixel circuit that outputs a driving current corresponding to a data voltage from a data line using a scan signal, a first driving voltage and a second driving voltage; and a light emitting element that emits light by the driving current from the pixel circuit.Type: ApplicationFiled: December 17, 2008Publication date: November 19, 2009Inventors: Jin Hyoung Kim, Woo Jin Nam, Ho Min Lim, Su Jin Baek, Jung Yoon Yi, Seung Tae Kim
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Patent number: 7547015Abstract: An image forming apparatus has an image forming part forming an image on paper, and a housing accommodating the image forming part and having a paper stack part stacking paper discharged from the image forming part, and the image forming apparatus includes an accommodating part formed in an edge of the paper stack part and extending in a paper discharge direction; a base plate mounted in the accommodating part to be slidable in the paper discharge direction and a reverse direction opposite to the paper discharge direction; and a stopper hinge-coupled to the base plate to be tiltable among a stand up position where the stopper blocks paper discharged from the image forming part, a rear folding position where the stopper is folded onto the base plate and is at least partially accommodated in the paper stack part, and a front folding position where the stopper is folded in the paper discharge direction.Type: GrantFiled: December 8, 2005Date of Patent: June 16, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Bong-hee Lee, Ho-min Lim
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Patent number: 7505713Abstract: A rollers separating unit which controls a distance between a heating roller and a pressurizing roller of a fixing unit by an opening/closing of a side cover. The rollers separating unit includes an elastic support member rotatably hinge-coupled to one side of a housing of a fixing unit, to elastically support a roller installed at an outer portion of a main body between a pair of rollers so that the pair of rollers pressurize each other, a first lever rotatably hinge-coupled to one end of the elastic support member, to rotate the elastic support member at a first predetermined angle so that the pair of rollers are separated from each other, and a side cover rotatably hinge-coupled to one side of the main body, to increase a distance between the pair of rollers by operating the first lever.Type: GrantFiled: December 1, 2005Date of Patent: March 17, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Bong-hee Lee, Ho-min Lim
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Publication number: 20070160398Abstract: A fixing unit for fixing a toner image on a paper sheet is provided with a heat roller which heats a paper sheet on which a toner image is transferred; a pressure roller which forms a contact nip with the heat roller and presses the paper sheet passing through the contact nip while the pressure roller and the heat roller rotate in conjunction with each other; and a contact nip adjusting element which changes the contact nip by shifting the pressure roller in a paper feed direction. As a result, the contact nip between the heat roller and the pressure roller is actively adjusted using the contact nip adjusting element to control paper skewing. Therefore, a toner image is not blurred when the toner image is touched by adjacent units prior to a fixing operation.Type: ApplicationFiled: December 15, 2006Publication date: July 12, 2007Applicant: Samsung Electronics Co., Ltd.Inventor: Ho-min Lim
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Publication number: 20060239715Abstract: A rollers separating unit which controls a distance between a heating roller and a pressurizing roller of a fixing unit by an opening/closing of a side cover. The rollers separating unit includes an elastic support member rotatably hinge-coupled to one side of a housing of a fixing unit, to elastically support a roller installed at an outer portion of a main body between a pair of rollers so that the pair of rollers pressurize each other, a first lever rotatably hinge-coupled to one end of the elastic support member, to rotate the elastic support member at a first predetermined angle so that the pair of rollers are separated from each other, and a side cover rotatably hinge-coupled to one side of the main body, to increase a distance between the pair of rollers by operating the first lever.Type: ApplicationFiled: December 1, 2005Publication date: October 26, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Bong-hee Lee, Ho-min Lim
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Publication number: 20060220303Abstract: An image forming apparatus has an image forming part forming an image on paper, and a housing accommodating the image forming part and having a paper stack part stacking paper discharged from the image forming part, and the image forming apparatus includes an accommodating part formed in an edge of the paper stack part and extending in a paper discharge direction; a base plate mounted in the accommodating part to be slidable in the paper discharge direction and a reverse direction opposite to the paper discharge direction; and a stopper hinge-coupled to the base plate to be tiltable among a stand up position where the stopper blocks paper discharged from the image forming part, a rear folding position where the stopper is folded onto the base plate and is at least partially accommodated in the paper stack part, and a front folding position where the stopper is folded in the paper discharge direction.Type: ApplicationFiled: December 8, 2005Publication date: October 5, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Bong-hee Lee, Ho-min Lim