Patents by Inventor Jung Mi Choi
Jung 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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Publication number: 20210090502Abstract: Provided are a pixel circuit and a display device having the pixel circuit. The pixel circuit includes an organic light emitting diode, a switching transistor, a storage capacitor, and a driving transistor. The switching transistor is turned off when a scan signal has a first voltage and turned on when the scan signal has a second voltage. The storage capacitor stores a data voltage when the switching transistor is turned on in response to the scan signal. The driving transistor is electrically connected with the organic light emitting diode between a high power supply voltage and a low power supply voltage to provide a driving current to the organic light emitting diode, and includes a first bottom gate electrode that is provided with the first voltage. The driving current corresponds to the data voltage stored in the storage capacitor.Type: ApplicationFiled: September 22, 2020Publication date: March 25, 2021Applicant: Samsung Display Co., LTD.Inventors: Jung-Mi CHOI, Young-In HWANG, Eung Taek KIM, Yong Ho YANG, Joo Hyeon JO, Seong Baik CHU
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Publication number: 20210090494Abstract: A display device includes: a (k?1)-th scan line and a k-th scan line which are parallel to each other; a j-th data line which crosses the (k?1)-th scan line and the k-th scan line; and a subpixel connected to the (k?1)-th scan line, the k-th scan line, and the j-th data line, wherein the subpixel includes: a driving transistor configured to control a driving current flowing from a first electrode thereof to a second electrode thereof according to a data voltage applied to a first gate electrode thereof, the driving transistor having a second gate electrode connected to the (k?1)-th scan line; and a light emitting element configured to emit light according to the driving current.Type: ApplicationFiled: June 19, 2020Publication date: March 25, 2021Inventors: Young In HWANG, Sung Ho KIM, Eung Taek KIM, Joo Hyeon JO, Jung Mi CHOI, Seong Baik CHU
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Patent number: 10902774Abstract: A pixel includes: an organic light emitting diode; a first transistor including a gate that is connected to a first node, wherein the first transistor is connected between a second node and a third node; a second transistor including a gate that is connected to a corresponding scan line, wherein the second transistor is connected between a data line and the second node; a storage capacitor connected between the first node and a first voltage; a third transistor including a gate that is connected to the corresponding scan line, the third transistor is connected between the first node and the third node; and a fourth transistor connected between a first end of the first transistor and a second voltage.Type: GrantFiled: February 25, 2019Date of Patent: January 26, 2021Inventors: Young-In Hwang, Sung Ho Kim, Eung Taek Kim, Yong Ho Yang, Seong Min Wang, Jung-Mi Choi
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Publication number: 20190279567Abstract: A pixel includes: an organic light emitting diode; a first transistor including a gate that is connected to a first node, wherein the first transistor is connected between a second node and a third node; a second transistor including a gate that is connected to a corresponding scan line, wherein the second transistor is connected between a data line and the second node; a storage capacitor connected between the first node and a first voltage; a third transistor including a gate that is connected to the corresponding scan line, the third transistor is connected between the first node and the third node; and a fourth transistor connected between a first end of the first transistor and a second voltage.Type: ApplicationFiled: February 25, 2019Publication date: September 12, 2019Inventors: Young-In Hwang, Sung Ho Kim, Eung Taek Kim, Yong Ho Yang, Seong Min Wang, Jung-Mi Choi
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Patent number: 9953576Abstract: An organic light-emitting diode display is disclosed. In one aspect, the display includes a display substrate including a display area and a peripheral area surrounding the display area. Scan lines are formed over the display substrate and configured to transmit a scan signal, data lines and driving voltage lines crossing the scan lines are configured to respectively provide a data signal and a driving voltage, and switching elements are electrically connected to the scan lines and data lines. Pixel electrodes are electrically connected to the switching elements, an organic emission layer is formed over the pixel electrodes, and a common electrode is formed over the organic emission layer. A common voltage line is formed substantially parallel to the data lines and configured to transmit a common voltage to the common electrode.Type: GrantFiled: December 16, 2015Date of Patent: April 24, 2018Assignee: Samsung Display Co., Ltd.Inventors: Jung-Mi Choi, Chul Kyu Kang, Kyung Hoon Chung
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Patent number: 9668318Abstract: An organic light-emitting display apparatus includes a flexible substrate having a display region and a non-display region located at an outer region of the display region, the non-display region being folded with respect to the display region; at least one organic light-emitting diode (OLED) on the display region of the flexible substrate; and an encapsulation member encapsulating the display region.Type: GrantFiled: May 11, 2012Date of Patent: May 30, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jung-Mi Choi, Yong-Hwan Park
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Patent number: 9570531Abstract: An organic light emitting display device includes a substrate comprising a major surface; a display region and a peripheral region surrounding the display region when viewed in a viewing direction perpendicular to the major surface; an array of a plurality of pixels disposed in the display region; and a first power line extending from the peripheral region into the display region, the first power line being electrically connected to the array of pixels at a contact point in the display region. When viewed in the viewing direction, the first power line includes: a first extension extending from the peripheral region to the display region; and a second extension connected to the first extension; and a third extension connected to the second extension and extending from a location in the display region toward the peripheral region.Type: GrantFiled: February 20, 2015Date of Patent: February 14, 2017Assignee: Samsung Display Co., Ltd.Inventors: Kyung Hoon Chung, Chul-Kyu Kang, Jung-Mi Choi
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Patent number: 9519167Abstract: A method of forming a pattern may include: disposing a first material layer; disposing a first photoresist film including first shot regions; exposing the first shot regions to light, wherein an overlapping region between first shot regions may be overlappingly exposed to light exposures onto the first shot regions; forming a first photoresist pattern by developing the first photoresist film; forming a first pattern by etching the first material layer using the first photoresist pattern as an etching mask; disposing a second material layer on the first pattern; disposing a second photoresist film including second shot regions; exposing the second shot regions, wherein a boundary region between second shot regions may be disposed spaced apart from the overlapping region; forming a second photoresist pattern by developing the second photoresist film; and forming a second pattern by etching the second material layer using the second photoresist pattern as an etching mask.Type: GrantFiled: June 22, 2015Date of Patent: December 13, 2016Assignee: Samsung Display Co., Ltd.Inventors: Jung-Mi Choi, Dae-Hyun Noh
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Patent number: 9508300Abstract: A driving circuit includes: an input terminal; an output terminal; a first transistor having a source electrode coupled to the input terminal, a drain electrode coupled to the output terminal, and a gate electrode; a second transistor having a source electrode, a drain electrode, and a gate electrode respectively coupled to the source electrode, the drain electrode, and the gate electrode of the first transistor; a first capacitor having a first electrode coupled to the input terminal and a second electrode coupled to the output terminal; and a second capacitor coupled in parallel with the first capacitor and having a first electrode coupled to the first electrode of the first capacitor and a second electrode that is floated.Type: GrantFiled: December 13, 2012Date of Patent: November 29, 2016Assignee: Samsung Display Co., Ltd.Inventors: Jung-Mi Choi, Bo-Yong Chung, Keum-Nam Kim
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Publication number: 20160321993Abstract: An organic light-emitting diode display is disclosed. In one aspect, the display includes a display substrate including a display area and a peripheral area surrounding the display area. Scan lines are formed over the display substrate and configured to transmit a scan signal, data lines and driving voltage lines crossing the scan lines are configured to respectively provide a data signal and a driving voltage, and switching elements are electrically connected to the scan lines and data lines. Pixel electrodes are electrically connected to the switching elements, an organic emission layer is formed over the pixel electrodes, and a common electrode is formed over the organic emission layer. A common voltage line is formed substantially parallel to the data lines and configured to transmit a common voltage to the common electrode.Type: ApplicationFiled: December 16, 2015Publication date: November 3, 2016Inventors: Jung-Mi Choi, Chul Kyu Kang, Kyung Hoon Chung
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Patent number: 9444443Abstract: A gate driver includes a plurality of stages respectively outputting a plurality of gate output signals. An N-th stage of the gate driver (where N is a positive integer) includes a first input part, a second input part, a pull up part, a pull down part, a holding part and a stabilizing part. The first input part transmits a first clock signal to a second node in response to a signal at a first node. The second input part transmits an input signal to the first node in response to a second clock signal. The pull up part pulls up the gate output signal in response to a signal at the second node. The pull down part pulls down the gate output signal in response to the signal at the first node. The holding part maintains the signal at the second node in response to the first clock signal. The stabilizing part stabilizes the gate output signal in response to the signal at the second node and a third clock signal.Type: GrantFiled: August 6, 2013Date of Patent: September 13, 2016Assignee: Samsung Display Co., Ltd.Inventors: Bo-Yong Chung, Jung-Mi Choi
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Patent number: 9437664Abstract: A display device may include a display area for displaying an image. The display device may further include a peripheral area that surrounds the display area. The display device may further include a pixel disposed in the display area. The display device may further include a bus line disposed in the peripheral area and configured to transmit a signal. The display device may further include a connection conductor set electrically connected to the bus line. The display device may further include a branch line electrically connected to the connection conductor set, configured to receive the signal from the bus line, and configured to transmit the signal to the pixel, wherein a portion of the branch line is disposed in the display area.Type: GrantFiled: January 14, 2014Date of Patent: September 6, 2016Assignee: Samsung Display Co., Ltd.Inventors: Jung-Mi Choi, Dong-Gyu Kim, Young-In Hwang, Deok-Young Choi, Seong-Il Park
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Patent number: 9368559Abstract: Provided is an organic light emitting display device. The device includes an organic electroluminescence element in which a pixel electrode, an intermediate layer including a light emitting layer, and a cathode electrode are successively stacked, a cathode contact including an upper electrode contacting the cathode electrode and a lower electrode disposed on the same layer as the pixel electrode to contact the upper electrode, and a line disposed on the same layer as the lower electrode. At least three cathode contacts are disposed in a direction crossing the line, and the line is disposed between the cathode contacts.Type: GrantFiled: February 11, 2014Date of Patent: June 14, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jung-Mi Choi, Young-In Hwang
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Patent number: 9324266Abstract: A pixel capable of being driven at a low driving frequency that includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current supplied from a first power supply coupled to a first electrode thereof to the OLED to correspond to a voltage applied to a first node, a second transistor coupled between a data line and a second node and turned on when a scan signal is supplied to a scan line, a third transistor coupled between the first node and the second node and turned on when a second control signal is supplied to a second control line, a first capacitor coupled between the second node and a fixed voltage source, and a second capacitor and a third capacitor serially coupled between the first node and the first power supply.Type: GrantFiled: May 9, 2013Date of Patent: April 26, 2016Assignee: Samsung Display Co., Ltd.Inventors: Young-In Hwang, Jung-Mi Choi
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Publication number: 20160099299Abstract: An organic light emitting display device includes a substrate comprising a major surface; a display region and a peripheral region surrounding the display region when viewed in a viewing direction perpendicular to the major surface; an array of a plurality of pixels disposed in the display region; and a first power line extending from the peripheral region into the display region, the first power line being electrically connected to the array of pixels at a contact point in the display region. When viewed in the viewing direction, the first power line includes: a first extension extending from the peripheral region to the display region; and a second extension connected to the first extension; and a third extension connected to the second extension and extending from a location in the display region toward the peripheral region.Type: ApplicationFiled: February 20, 2015Publication date: April 7, 2016Inventors: Kyung Hoon CHUNG, Chul-Kyu Kang, Jung-Mi Choi
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Patent number: 9299279Abstract: A display device according to the present invention includes: a display unit including a plurality of pixels coupled to a plurality of scan lines; a plurality of scan driving blocks coupled to the plurality of scan lines and adapted to apply a plurality of scan signals; an electrostatic discharge (ESD) unit adapted to protect the plurality of scan driving blocks from static charges; an AC power source unit for supplying a first power source voltage of which a level is changed between a logic high level and a logic low level, to the plurality of scan driving blocks through a first power source voltage wire during a pixel test of the plurality of pixels; and a DC power source unit for supplying a second power source voltage of the logic high level to the ESD unit through a second power source voltage wire.Type: GrantFiled: November 2, 2012Date of Patent: March 29, 2016Assignee: Samsung Display Co., Ltd.Inventors: Bo-Yong Chung, Jung-Mi Choi, Yong-Jae Kim, Young-In Hwang, Seong-Il Park
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Publication number: 20160085264Abstract: A method of forming a pattern may include: disposing a first material layer; disposing a first photoresist film including first shot regions; exposing the first shot regions to light, wherein an overlapping region between first shot regions may be overlappingly exposed to light exposures onto the first shot regions; forming a first photoresist pattern by developing the first photoresist film; forming a first pattern by etching the first material layer using the first photoresist pattern as an etching mask; disposing a second material layer on the first pattern; disposing a second photoresist film including second shot regions; exposing the second shot regions, wherein a boundary region between second shot regions may be disposed spaced apart from the overlapping region; forming a second photoresist pattern by developing the second photoresist film; and forming a second pattern by etching the second material layer using the second photoresist pattern as an etching mask.Type: ApplicationFiled: June 22, 2015Publication date: March 24, 2016Inventors: Jung-Mi CHOI, Dae-Hyun NOH
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Patent number: 9236007Abstract: An organic light-emitting display device comprising first through third pixels emitting light of first through third colors, respectively and a fourth pixel comprising first through third subpixels which emit light of the first through third colors, respectively, is disclosed.Type: GrantFiled: September 24, 2013Date of Patent: January 12, 2016Assignee: Samsung Display Co., Ltd.Inventor: Jung Mi Choi
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Patent number: 8970022Abstract: The present invention relates to an organic light emitting device and a manufacturing method thereof. A manufacturing method of an organic light emitting device according to an exemplary embodiment of the present invention includes forming a thin film structure on a first substrate, forming a dehumidification buffer layer on a second substrate, combining the first substrate and the second substrate, and heat treating the dehumidification buffer layer to soften the dehumidification buffer layer.Type: GrantFiled: December 23, 2013Date of Patent: March 3, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jung-Mi Choi, Hoon Kim
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Publication number: 20140353671Abstract: A display device may include a display area for displaying an image. The display device may further include a peripheral area that surrounds the display area. The display device may further include a pixel disposed in the display area. The display device may further include a bus line disposed in the peripheral area and configured to transmit a signal. The display device may further include a connection conductor set electrically connected to the bus line. The display device may further include a branch line electrically connected to the connection conductor set, configured to receive the signal from the bus line, and configured to transmit the signal to the pixel, wherein a portion of the branch line is disposed in the display area.Type: ApplicationFiled: January 14, 2014Publication date: December 4, 2014Applicant: Samsung Display Co., Ltd.Inventors: Jung-Mi CHOI, Dong-Gyu KIM, Young-In HWANG, Deok-Young CHOI, Seong-Il PARK