Patents by Inventor Joong-Sun Yoon
Joong-Sun Yoon 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: 10032410Abstract: Disclosed is a display apparatus. The display apparatus performs external compensation by using sensing data generated through actual sensing and calculation data which is calculated based on the sensing data with a median filter.Type: GrantFiled: July 7, 2015Date of Patent: July 24, 2018Assignee: LG Display Co., Ltd.Inventors: Shinji Takasugi, Joong Sun Yoon, Min Kyu Chang, Hyo Jin Park, Jeong Pyo Lee, Chang Woo Seok
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Patent number: 9985084Abstract: A flat display device in which a semi-transparent non-display area is processed to be non-transparent for preventing a display area from being reduced and fabricating a thinner flat display device is disclosed. The flat display device includes a first substrate having a display area with a pixel matrix formed therein and a non-display area with a driving circuit for driving the pixel matrix formed therein, a second substrate bonded to the first substrate with sealant, and a light shielding layer formed on the second substrate for making the non-display area non-transparent.Type: GrantFiled: August 10, 2010Date of Patent: May 29, 2018Assignee: LG DISPLAY CO., LTD.Inventor: Joong-Sun Yoon
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Patent number: 9660090Abstract: An array substrate having a thin film transistor with an oxide semiconductor layer, wherein the thin film transistor is in a device area of a pixel region; the substrate comprising a light-shielding pattern on the array substrate in the device area; an auxiliary line connected to a light-shielding pattern and supplying a constant voltage to the light-shielding pattern, wherein the auxiliary line is parallel to and spaced apart from one of the gate and data lines; a buffer layer on the light-shielding pattern and a surface of the array substrate, wherein the oxide semiconductor layer is on the buffer layer and the light-shielding pattern; an inter-insulating layer on the buffer layer, wherein the oxide semiconductor layer includes an active portion located entirely on the light-shielding pattern and having a channel formed thereon, and conductive portions located on sides of the active portion.Type: GrantFiled: October 20, 2014Date of Patent: May 23, 2017Assignee: LG DISPLAY CO., LTD.Inventor: Joong-Sun Yoon
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Patent number: 9514685Abstract: A display device that may minimize voltage drop of a power source supplied to a pixel is disclosed. The display device comprises a power generator generating a driving power source; a display panel including a plurality of pixels, the display panel displaying images using the driving power source; and a printed circuit board having a power transfer line for transferring the driving power source output from the power generator to the display panel, wherein the power transfer line is provided in a closed-loop type.Type: GrantFiled: December 23, 2014Date of Patent: December 6, 2016Assignee: LG Display Co., Ltd.Inventors: Joong Sun Yoon, Sung Jin Hong, Dae Hyun Kim
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Patent number: 9449552Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a panel in which a plurality of pixels are respectively formed in intersection areas between a plurality of gate lines and a plurality of data lines formed in an active area, a pixel circuit is included in each of the pixels, and a plurality of power lines are formed for supplying power to drive the pixel circuit; a gate driving IC configured to supply a scan signal to the gate lines, a power supply configured to supply the power to the power lines, a detection unit configured to detect a panel abnormality in the active area by using a sensing signal collected through a sensing line electrically connected to a corresponding gate line, and a controller configured to control driving of the power supply according to the detection result of the detection unit.Type: GrantFiled: December 17, 2013Date of Patent: September 20, 2016Assignee: LG Display Co., Ltd.Inventors: Ji Eun Lee, Joong Sun Yoon, Seon Mi Lee, Boeon Byeon
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Patent number: 9391131Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.Type: GrantFiled: February 18, 2016Date of Patent: July 12, 2016Assignee: LG Display Co., Ltd.Inventors: Hee Dong Choi, Sung Jin Hong, Soon Il Yun, Il Gi Jeong, Joong Sun Yoon, Kyungsu Lee, Seung-Yong Yang
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Patent number: 9373280Abstract: An organic light emitting diode (OLED) display device and a method of driving the same are discussed. The method includes sensing a threshold voltage and mobility of a driving thin film transistor (TFT) included in each pixel using a sensing line connected per pixel and supplying the threshold voltage and the mobility to a timing controller in a measurement mode, by a data driver, and supplying image data input from an external source to the data driver by a timing controller, the timing controller adding and multiplying an offset value and gain value corresponding to the threshold voltage and mobility of the driving TFT, sensed by the data driver in the measurement mode, with the image data to compensate the image data, wherein the compensation of the image data includes varying a weight of the gain value according to luminance of the image data.Type: GrantFiled: December 16, 2013Date of Patent: June 21, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Joong-Sun Yoon, Young-Hak Lee
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Publication number: 20160164050Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.Type: ApplicationFiled: February 18, 2016Publication date: June 9, 2016Applicant: LG Display Co., Ltd.Inventors: Hee Dong CHOI, Sung Jin HONG, Soon Il YUN, Il Gi JEONG, Joong Sun YOON, Kyungsu LEE, Seung-Yong YANG
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Patent number: 9281352Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.Type: GrantFiled: November 6, 2014Date of Patent: March 8, 2016Assignee: LG Display Co., Ltd.Inventors: Hee Dong Choi, Sung Jin Hong, Soon Il Yun, Il Gi Jeong, Joong Sun Yoon, Kyungsu Lee, Seung-Yong Yang
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Publication number: 20160005354Abstract: Disclosed is a display apparatus. The display apparatus performs external compensation by using sensing data generated through actual sensing and calculation data which is calculated based on the sensing data with a median filter.Type: ApplicationFiled: July 7, 2015Publication date: January 7, 2016Applicant: LG Display Co., Ltd.Inventors: Shinji Takasugi, Joong Sun Yoon, Min Kyu Chang, Hyo Jin Park, Jeong Pyo Lee, Chang Woo Seok
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Patent number: 9218764Abstract: A display device according to an embodiment includes a display panel including a display area having pixel areas, and a non-display area surrounding the display area. The display area includes first power lines for providing a first power to the pixel areas. The display device further includes a driver electrically connected to the first power lines of the display panel. The driver includes a driving integrated circuit, signal output pads connected to the driving integrated circuit and configured to output signals, a power supply line disposed outside the signal output pads and configured to supply the first power, and power output pads connected to the power supply line and configured to output the first power from the power supply line to the first power lines, wherein the power output pads are alternatingly disposed with the signal output pads.Type: GrantFiled: June 26, 2013Date of Patent: December 22, 2015Assignee: LG Display Co., Ltd.Inventors: Joong-Sun Yoon, Soon-Il Yun
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Publication number: 20150187959Abstract: An array substrate having a thin film transistor with an oxide semiconductor layer, comprising: gate and data lines formed on the array substrate and defining a pixel region, wherein the thin film transistor is located in a device area of the pixel region; a light-shielding pattern arranged on the array substrate in the device area; an auxiliary line connected to the light-shielding pattern and supplying a constant voltage to the light-shielding pattern, wherein the auxiliary line is parallel to and spaced apart from one of the gate and data lines; a buffer layer of an inorganic material and located on the light-shielding pattern and a surface of the array substrate, wherein the oxide semiconductor layer is located on the buffer layer and the light-shielding pattern; an inter-insulating layer on the buffer layer, wherein the oxide semiconductor layer includes an active portion located entirely on the light-blocking pattern and having a channel formed thereon, and conductive portions located on sides of the acType: ApplicationFiled: October 20, 2014Publication date: July 2, 2015Inventor: Joong-Sun YOON
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Publication number: 20150179106Abstract: A display device that may minimize voltage drop of a power source supplied to a pixel is disclosed. The display device comprises a power generator generating a driving power source; a display panel including a plurality of pixels, the display panel displaying images using the driving power source; and a printed circuit board having a power transfer line for transferring the driving power source output from the power generator to the display panel, wherein the power transfer line is provided in a closed-loop type.Type: ApplicationFiled: December 23, 2014Publication date: June 25, 2015Inventors: Joong Sun YOON, Sung Jin HONG, Dae Hyun KIM
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Publication number: 20150123107Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.Type: ApplicationFiled: November 6, 2014Publication date: May 7, 2015Applicant: LG Display Co., Ltd.Inventors: Hee Dong Choi, Sung Jin Hong, Soon Il Yun, Il Gi Jeong, Joong Sun Yoon, Kyungsu Lee, Seung-Yong Yang
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Patent number: 8988329Abstract: Disclosed are an OLED display device and method for sensing characteristic parameters of pixel driving circuits. The display device includes a display panel including pixels each having a light emitting element and a pixel driving circuit for independently driving the light emitting element, and a characteristic parameter detecting unit for driving the pixel driving circuit of one of the plural pixels, which is a sensing pixel, sensing a voltage discharged in accordance with characteristics of a driving TFT in the pixel driving circuit of the sensing pixel, on a data line connected to the pixel driving circuit of the sensing pixel, among data lines connected to respective pixel driving circuits of the pixels, and detecting a threshold voltage (Vth) of the driving TFT and a deviation of a process characteristic parameter (k-parameter) of the driving TFT, using the measured voltage.Type: GrantFiled: December 14, 2012Date of Patent: March 24, 2015Assignee: LG Display Co., Ltd.Inventors: Joong-Sun Yoon, Seung-Tae Kim, Ji-Hyun Kang, Ji-Eun Lee
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Publication number: 20140175977Abstract: A display device according to an embodiment includes a display panel including a display area having pixel areas, and a non-display area surrounding the display area. The display area includes first power lines for providing a first power to the pixel areas. The display device further includes a driver electrically connected to the first power lines of the display panel. The driver includes a driving integrated circuit, signal output pads connected to the driving integrated circuit and configured to output signals, a power supply line disposed outside the signal output pads and configured to supply the first power, and power output pads connected to the power supply line and configured to output the first power from the power supply line to the first power lines, wherein the power output pads are alternatingly disposed with the signal output pads.Type: ApplicationFiled: June 26, 2013Publication date: June 26, 2014Inventors: Joong-Sun YOON, Soon-Il YUN
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Publication number: 20140176625Abstract: An organic light emitting diode (OLED) display device and a method of driving the same are discussed. The method includes sensing a threshold voltage and mobility of a driving thin film transistor (TFT) included in each pixel using a sensing line connected per pixel and supplying the threshold voltage and the mobility to a timing controller in a measurement mode, by a data driver, and supplying image data input from an external source to the data driver by a timing controller, the timing controller adding and multiplying an offset value and gain value corresponding to the threshold voltage and mobility of the driving TFT, sensed by the data driver in the measurement mode, with the image data to compensate the image data, wherein the compensation of the image data includes varying a weight of the gain value according to luminance of the image data.Type: ApplicationFiled: December 16, 2013Publication date: June 26, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Joong-Sun YOON, Young-Hak LEE
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Publication number: 20140176524Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a panel in which a plurality of pixels are respectively formed in intersection areas between a plurality of gate lines and a plurality of data lines formed in an active area, a pixel circuit is included in each of the pixels, and a plurality of power lines are formed for supplying power to drive the pixel circuit; a gate driving IC configured to supply a scan signal to the gate lines, a power supply configured to supply the power to the power lines, a detection unit configured to detect a panel abnormality in the active area by using a sensing signal collected through a sensing line electrically connected to a corresponding gate line, and a controller configured to control driving of the power supply according to the detection result of the detection unit.Type: ApplicationFiled: December 17, 2013Publication date: June 26, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Ji Eun Lee, Joong Sun Yoon, Seon Mi Lee, Boeon Byeon
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Publication number: 20110109596Abstract: A flat display device in which a semi-transparent non-display area is processed to be non-transparent for preventing a display area from being reduced and fabricating a thinner flat display device is disclosed. The flat display device includes a first substrate having a display area with a pixel matrix formed therein and a non-display area with a driving circuit for driving the pixel matrix formed therein, a second substrate bonded to the first substrate with sealant, and a light shielding layer formed on the second substrate for making the non-display area non-transparent.Type: ApplicationFiled: August 10, 2010Publication date: May 12, 2011Inventor: Joong-Sun Yoon