Patents by Inventor Joung Mi CHOI
Joung Mi CHOI 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: 11861930Abstract: The present disclosure relates to a display panel and a display device using the same. The display panel includes a plurality of first unit pixel areas in which N subpixels (N is a positive integer greater than or equal to 3) for displaying data are disposed, and a plurality of second unit pixel areas in which N?1 subpixels for displaying data are disposed. Each of the first unit pixel areas and each of the second unit pixel areas have the same size. Each of the first and second unit pixel areas is a pixel area in a parallelogram or rhombus shape.Type: GrantFiled: August 9, 2021Date of Patent: January 2, 2024Assignee: LG Display Co., Ltd.Inventors: Man Hyeop Han, Joung Mi Choi, Seung Taek Oh
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Patent number: 11790687Abstract: A display device and a mobile terminal including the same includes a display area in which a first group of display pixels to which pixel data is written are arranged, and a sensing area in which a second group of display pixels and a plurality of sensor pixels are arranged; each of the display pixels includes a pixel circuit configured to drive a light emitting element; each of the sensor pixels includes a photosensor driving circuit configured to drive a photodiode; a low potential power voltage and a pixel driving voltage are applied to the pixel circuit and the photosensor driving circuit; a cathode electrode of the light emitting element and the cathode electrode of the photodiode share the same metal electrode, and are commonly connected to a low potential power line to which the low potential power voltage is applied.Type: GrantFiled: June 28, 2021Date of Patent: October 17, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Man Hyeop Han, Joung Mi Choi, Dong Gun Lee
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Publication number: 20220075979Abstract: The present disclosure relates to a display panel and a display device using the same. The display panel includes a plurality of first unit pixel areas in which N subpixels (N is a positive integer greater than or equal to 3) for displaying data are disposed, and a plurality of second unit pixel areas in which N?1 subpixels for displaying data are disposed. Each of the first unit pixel areas and each of the second unit pixel areas have the same size. Each of the first and second unit pixel areas is a pixel area in a parallelogram or rhombus shape.Type: ApplicationFiled: August 9, 2021Publication date: March 10, 2022Inventors: Man Hyeop Han, Joung Mi Choi, Seung Taek Oh
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Publication number: 20220037430Abstract: Disclosed herein are a display device and a mobile terminal device including the same, which include a display panel including a screen in which a plurality of display pixels which are sequentially scanned, and a plurality of sensor pixels which are exposed to a light during an exposure time to convert the light into an electric current are disposed. While the display pixels disposed in the first area of the screen are scanned, the sensor pixels are exposed. While the display pixels in the second area of the screen are scanned, sensor data is output from the sensor pixels and then the sensor pixels are initialized.Type: ApplicationFiled: July 20, 2021Publication date: February 3, 2022Inventors: Dong Gun Lee, Joung Mi Choi, Man Hyeop Han
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Publication number: 20220019757Abstract: A display device and a mobile terminal including the same includes a display area in which a first group of display pixels to which pixel data is written are arranged, and a sensing area in which a second group of display pixels and a plurality of sensor pixels are arranged; each of the display pixels includes a pixel circuit configured to drive a light emitting element; each of the sensor pixels includes a photosensor driving circuit configured to drive a photodiode; a low potential power voltage and a pixel driving voltage are applied to the pixel circuit and the photosensor driving circuit; a cathode electrode of the light emitting element and the cathode electrode of the photodiode share the same metal electrode, and are commonly connected to a low potential power line to which the low potential power voltage is applied.Type: ApplicationFiled: June 28, 2021Publication date: January 20, 2022Applicant: LG Display Co., Ltd.Inventors: Man Hyeop HAN, Joung Mi CHOI, Dong Gun LEE
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Patent number: 10115366Abstract: An LCD device can include a liquid crystal display panel having a plurality of gate lines; a controller configured to generate at least four clock signals with different phases; a first gate driver configured to apply a high gate voltage to odd-numbered gate lines in response to at least two of the clock signals; a second gate driver configured to apply the high gate voltage to even-numbered gate lines in response to other clock signals; primary discharge circuits each configured to apply a low gate voltage to the respective odd-numbered gate line in response to a carry signal opposite to a voltage level on one of posterior odd-and-even-numbered gate lines; and secondary discharge circuits each configured to apply the low gate voltage to the respective even-numbered gate line in response to the carry signal opposite to the voltage level on the other one of the posterior odd-and-even-numbered gate lines.Type: GrantFiled: August 4, 2015Date of Patent: October 30, 2018Assignee: LG DISPLAY CO., LTD.Inventor: Joung Mi Choi
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Patent number: 9620240Abstract: Disclosed is a shift register including stages for sequentially outputting output pulses including carry and scan pulses. Odd-numbered stages supply corresponding scan pulses to odd-numbered gate lines in a sequential manner, and even-numbered stages supply corresponding scan pulses to even-numbered gate lines in a sequential manner. Each stage includes a carry output unit for generating a carry pulse, based on a first discharge voltage and a clock pulse having a low-level voltage equal to the first discharge voltage, and supplying the carry pulse to at least one of upstream and downstream stages, and a scan output unit for generating a scan pulse, based on a second discharge voltage having a higher voltage than the first discharge voltage and the clock pulse, and supplying the scan pulse to a corresponding gate line.Type: GrantFiled: May 29, 2014Date of Patent: April 11, 2017Assignee: LG Display Co., Ltd.Inventors: Byeong-Seong So, Joung-Mi Choi
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Publication number: 20150340003Abstract: An LCD device can include a liquid crystal display panel having a plurality of gate lines; a controller configured to generate at least four clock signals with different phases; a first gate driver configured to apply a high gate voltage to odd-numbered gate lines in response to at least two of the clock signals; a second gate driver configured to apply the high gate voltage to even-numbered gate lines in response to other clock signals; primary discharge circuits each configured to apply a low gate voltage to the respective odd-numbered gate line in response to a carry signal opposite to a voltage level on one of posterior odd-and-even-numbered gate lines; and secondary discharge circuits each configured to apply the low gate voltage to the respective even-numbered gate line in response to the carry signal opposite to the voltage level on the other one of the posterior odd-and-even-numbered gate lines.Type: ApplicationFiled: August 4, 2015Publication date: November 26, 2015Applicant: LG DISPLAY CO., LTD.Inventor: Joung Mi CHOI
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Patent number: 9123310Abstract: An LCD device according to an embodiment includes a liquid crystal display panel in which n gate lines are formed; a timing controller to generate first to sixth clock signals; a first gate driver to apply a high gate voltage to one ends of the (2k?1)th gate lines in response to the first, third and fifth clock signals; a second gate driver to apply the high gate voltage to one ends of the (2k)th gate lines in response to the second, fourth and sixth clock signals; left discharge circuits each to apply a low gate voltage to the other end of the (2k?1)th gate line according to a voltage level on (2k+1)th gate line; and right discharge circuits each to apply the low gate voltage to the other end of the (2k)th gate line according to the voltage level on (2k+2)th gate line.Type: GrantFiled: December 26, 2012Date of Patent: September 1, 2015Assignee: LG DISPLAY CO., LTD.Inventor: Joung Mi Choi
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Patent number: 8976106Abstract: An LCD panel being driven in an overlapping drive mode by applying a gate high voltage during n horizontal synchronous intervals is disclosed. The LCD panel includes: a plurality of gate lines; and a gate driver configured to include a plurality of stages connected to the plurality of gate lines. The plurality of stages are grouped in a plurality of stage groups each including n stages. Odd-numbered stage groups each allows the n stages to be arranged in a Z shape with having a display area therebetween. Even-number stage groups each allows the n states to be arranged in an inverse-Z shape with having the display area therebetween.Type: GrantFiled: October 2, 2013Date of Patent: March 10, 2015Assignee: LG Display Co., Ltd.Inventors: Byeong Seong So, Joung Mi Choi
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Publication number: 20140354523Abstract: Disclosed is a shift register including stages for sequentially outputting output pulses including carry and scan pulses. Odd-numbered stages supply corresponding scan pulses to odd-numbered gate lines in a sequential manner, and even-numbered stages supply corresponding scan pulses to even-numbered gate lines in a sequential manner. Each stage includes a carry output unit for generating a carry pulse, based on a first discharge voltage and a clock pulse having a low-level voltage equal to the first discharge voltage, and supplying the carry pulse to at least one of upstream and downstream stages, and a scan output unit for generating a scan pulse, based on a second discharge voltage having a higher voltage than the first discharge voltage and the clock pulse, and supplying the scan pulse to a corresponding gate line.Type: ApplicationFiled: May 29, 2014Publication date: December 4, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Byeong-Seong SO, Joung-Mi CHOI
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Publication number: 20140118327Abstract: An LCD panel being driven in an overlapping drive mode by applying a gate high voltage during n horizontal synchronous intervals is disclosed. The LCD panel includes: a plurality of gate lines; and a gate driver configured to include a plurality of stages connected to the plurality of gate lines. The plurality of stages are grouped in a plurality of stage groups each including n stages. Odd-numbered stage groups each allows the n stages to be arranged in a Z shape with having a display area therebetween. Even-number stage groups each allows the n states to be arranged in an inverse-Z shape with having the display area therebetween.Type: ApplicationFiled: October 2, 2013Publication date: May 1, 2014Applicant: LG Display Co., Ltd.Inventors: Byeong Seong SO, Joung Mi CHOI
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Publication number: 20140092082Abstract: An LCD device according to an embodiment includes a liquid crystal display panel in which n gate lines are formed; a timing controller to generate first to sixth clock signals; a first gate driver to apply a high gate voltage to one ends of the (2k?1)th gate lines in response to the first, third and fifth clock signals; a second gate driver to apply the high gate voltage to one ends of the (2k)th gate lines in response to the second, fourth and sixth clock signals; left discharge circuits each to apply a low gate voltage to the other end of the (2k?1)th gate line according to a voltage level on (2k+1)th gate line; and right discharge circuits each to apply the low gate voltage to the other end of the (2k)th gate line according to the voltage level on (2k+2)th gate line.Type: ApplicationFiled: December 26, 2012Publication date: April 3, 2014Applicant: LG DISPLAY CO., LTD.Inventor: Joung Mi CHOI