Patents by Inventor Ji Su Na
Ji Su Na 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).
-
Publication number: 20210319752Abstract: A display device includes a light emitting element. A first transistor transmits a driving current to the light emitting element. A second transistor is connected to a first electrode of the first transistor to transmit a data signal. A third transistor has a first electrode connected to a second electrode of the first transistor. An auxiliary transistor is connected between a second electrode of the third transistor and a gate electrode of the first transistor to transmit the data signal to the gate electrode of the first transistor. Each of the first transistor, the second transistor and the auxiliary transistor is a first-type transistor, and the third transistor is a second-type transistor different from the first-type transistor.Type: ApplicationFiled: June 22, 2021Publication date: October 14, 2021Inventors: Ji Su NA, Min Woo BYUN, Seung Kyu LEE
-
Publication number: 20210225282Abstract: A display device includes a plurality of pixels. A pixel includes an organic light emitting diode and a pixel circuit including a first transistor that includes a gate electrode connected with a first node, a first electrode connected with a second node, and a second electrode connected with a third node; a second transistor that includes a gate electrode connected with a first gate line, a first electrode connected with a data line, and a second electrode connected with the second node; a third transistor that includes a gate electrode connected with a third gate line, a first electrode connected with the third node, and a second electrode connected with the first node; and a fourth transistor that includes a gate electrode connected with a second gate line, a first electrode connected with the third gate line, and a second electrode connected with the first node.Type: ApplicationFiled: December 16, 2020Publication date: July 22, 2021Inventors: Young Jin Cho, Ji Su Na, Yang Wan Kim
-
Publication number: 20210201785Abstract: Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other.Type: ApplicationFiled: February 24, 2021Publication date: July 1, 2021Inventors: Ki Wook KIM, Kwang Min KIM, Yang Wan KIM, Ji Su NA, Min Woo BYUN
-
Publication number: 20210193040Abstract: An emission driver includes stages outputting an emission control signal. At least one of the stages includes an input circuit controlling voltages of a first node and a second node, an output circuit supplying a voltage of first power or a voltage of second power to an output terminal as the emission control signal in response to a voltage of a third node and a voltage of a fourth node, a first signal processor controlling the voltage of the fourth node, a second signal processor controlling the voltage of the fourth node, and a third signal processor controlling the voltage of the third node electrically connected to the first node in response to signals supplied to the second input terminal and the third input terminal and the voltage of the first node.Type: ApplicationFiled: August 14, 2020Publication date: June 24, 2021Inventor: Ji Su NA
-
Publication number: 20210125557Abstract: A display device includes a display panel for driving a plurality of pixels. Each of the plurality of pixels includes: a light-emitting element; a driving transistor for controlling a driving current flowing through the light-emitting element; a first transistor for selectively applying a data voltage to a first node, a second transistor for receiving an emission signal from an emission control line to selectively apply a driving voltage to the first node; and a first capacitor connected between the first node and the emission control line. The first node is a source electrode of the driving transistor.Type: ApplicationFiled: October 22, 2020Publication date: April 29, 2021Inventor: Ji Su NA
-
Publication number: 20210111239Abstract: A display device includes a signal line extending in a first direction, a first transistor configured to control a driving current, a light-emitting element electrically coupled to a second electrode of the first transistor, a second transistor electrically coupled to a first electrode of the first transistor and configured to transfer a data voltage, a first scan line electrically coupled to a gate electrode of the second transistor and extending in the first direction, a third transistor including a first electrode electrically coupled to the second electrode of the first transistor and a second electrode electrically coupled to a gate electrode of the first transistor and a second scan line electrically coupled to a gate electrode of the third transistor and extending in the first direction, wherein the second scan line overlaps one selected from among the signal line and the first scan line.Type: ApplicationFiled: June 30, 2020Publication date: April 15, 2021Inventors: Young Jin CHO, Ji Su NA, Joong Soo MOON, Yang Wan KIM, Chang Kyu JIN
-
Patent number: 10950174Abstract: Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other.Type: GrantFiled: April 2, 2019Date of Patent: March 16, 2021Inventors: Ki Wook Kim, Kwang Min Kim, Yang Wan Kim, Ji Su Na, Min Woo Byun
-
Patent number: 10872562Abstract: A pixel includes an OLED, a driving transistor, first to third transistors, and a first capacitor. The driving transistor controls an amount of current supplied from a first power source to the OLED. The first power source is coupled to a first electrode of the driving transistor. The current corresponds to a voltage of a first node. The first transistor is coupled between a data line and a second node. The first capacitor is coupled between the first node and the second node. The second transistor is coupled between the first node and a second electrode of the driving transistor. The third transistor is coupled between the first node and an initialization power source. A turn-on time of the first and second transistors overlaps that of the third transistor.Type: GrantFiled: February 19, 2019Date of Patent: December 22, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Ji Su Na
-
Publication number: 20200394952Abstract: A stage in an emission control driver of a display device includes an input unit to control a voltage of a first node and a second node in response to a first input signal supplied from a first input terminal and a second input signal supplied from a second input terminal, respectively; a first controller to control a voltage of a third node and a fourth node in response to a third input signal supplied from a third input terminal and the voltage of the second node; a second controller to control the voltage of the fourth node in response to the voltage of the first node; and an output unit to supply a voltage of a first power supply or a second power supply to an output terminal in response to the voltage of the third node or the voltage of the fourth node.Type: ApplicationFiled: June 4, 2020Publication date: December 17, 2020Inventors: Ji Su NA, Yang Wan Kim, Joong Soo Moon, Young Jin Cho
-
Patent number: 10777145Abstract: A demultiplexer includes: a first transistor connected between a data input line and a first data output line; a second transistor connected between the data input line and a second data output line; and an initializing transistor configured to be simultaneously turned on with the first transistor to transmit an initializing voltage to the second data output line.Type: GrantFiled: August 1, 2016Date of Patent: September 15, 2020Assignee: Samsung Display Co., Ltd.Inventors: Seung Kyu Lee, Ji Su Na
-
Patent number: 10685605Abstract: A display device includes a plurality of pixel columns, a plurality of switching units, a number of which corresponds to a number of the pixel columns, and a plurality of data lines of which a number is one more than the number of the pixel columns, where each of the switching units includes a first switch which transfers a data voltage to a first data line to which some of a plurality of pixels included in a corresponding pixel column are connected, and a second switch which transfers a data voltage to a second data line to which the other of the pixels included in the corresponding pixel column are connected, and a second switch included in a first switching unit among the switching units is connected with a first switch included in a second switching unit adjacent to the first switching unit.Type: GrantFiled: August 8, 2018Date of Patent: June 16, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ji Su Na, Hee Jin Jeon
-
Publication number: 20200168147Abstract: An organic light emitting diode (“OLED”) display includes a semiconductor layer on a substrate, first and second signal lines on the semiconductor layer, a shield layer on the first and second signal lines, a data line on the shield layer, and an OLED on the data line, where the transistor includes a driving transistor, a second transistor connected to the first signal line and the data line, and a third transistor including a gate electrode connected to the first signal line, a third electrode connected to a second electrode of the driving transistor, and a fourth electrode connected to a gate electrode of the driving transistor, the shield layer includes an overlapped portion overlapping at least a part of the connection portion and non-overlaps the second transistor, and the shield layer is separated from the first and second signal lines with a gap therebetween in a plan view.Type: ApplicationFiled: November 26, 2019Publication date: May 28, 2020Inventors: Ji Su NA, Joong-Soo MOON, Chae Han HYUN, Yang Wan KIM
-
Patent number: 10573223Abstract: A scan driver includes scan signal outputting circuits, at least one of the scan signal outputting circuits includes a driving circuit and a buffer circuit. The driving circuit includes driving transistors. The driving circuit provides first and second driving signals to first and second driving nodes, respectively by turning on or off the driving transistors in response to clock signals and a scan input signal. The buffer circuit includes buffer transistors. The buffer circuit outputs a scan signal at an output node by turning on or off the buffer transistors in response to the first and second driving signals. The at least one of the scan signal outputting circuits performs a back-biasing voltage applying operation on at least one of the driving transistors and the buffer transistors when the driving transistors and the buffer transistors are turned on or off.Type: GrantFiled: January 16, 2017Date of Patent: February 25, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ji-Hye Kong, Ji-Su Na, Yong-Sung Park, Dong-Bum Lee, In-Ho Choi, Young-In Hwang, Min-Woo Byun, Hea-Min Jung
-
Publication number: 20200005709Abstract: Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other.Type: ApplicationFiled: April 2, 2019Publication date: January 2, 2020Inventors: Ki Wook KIM, Kwang Min KIM, Yang Wan KIM, Ji Su NA, Min Woo BYUN
-
Publication number: 20190385523Abstract: A display device includes a light emitting element. A first transistor transmits a driving current to the light emitting element. A second transistor is connected to a first electrode of the first transistor to transmit a data signal. A third transistor has a first electrode connected to a second electrode of the first transistor. An auxiliary transistor is connected between a second electrode of the third transistor and a gate electrode of the first transistor to transmit the data signal to the gate electrode of the first transistor. Each of the first transistor, the second transistor and the auxiliary transistor is a first-type transistor, and the third transistor is a second-type transistor different from the first-type transistor.Type: ApplicationFiled: June 17, 2019Publication date: December 19, 2019Inventors: Ji Su NA, Min Woo BYUN, Seung Kyu LEE
-
Patent number: 10510301Abstract: A scan driver is integrated to include multiple drivers in a peripheral area of a display. The drivers output gate, emission, and/or other signals for driving pixel circuits in the display based on one or more clock signals.Type: GrantFiled: March 8, 2017Date of Patent: December 17, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ji-Su Na, Ji-Hye Kong, Young-In Hwang
-
Publication number: 20190259331Abstract: A pixel includes an OLED, a driving transistor, first to third transistors, and a first capacitor. The driving transistor controls an amount of current supplied from a first power source to the OLED. The first power source is coupled to a first electrode of the driving transistor. The current corresponds to a voltage of a first node. The first transistor is coupled between a data line and a second node. The first capacitor is coupled between the first node and the second node. The second transistor is coupled between the first node and a second electrode of the driving transistor. The third transistor is coupled between the first node and an initialization power source. A turn-on time of the first and second transistors overlaps that of the third transistor.Type: ApplicationFiled: February 19, 2019Publication date: August 22, 2019Inventor: JI SU NA
-
Patent number: 10388214Abstract: An organic light-emitting display device includes: a plurality of pixels arranged in a matrix, wherein each of the pixels includes: an organic light emitting element; a first transistor including a gate electrode coupled to a scan line, a first electrode coupled to a data line, and a second electrode coupled to a first node, a second transistor configured to drive the organic light emitting element according to a data voltage provided through the first transistor; a third transistor including a first electrode coupled to the first node and a second electrode coupled to a second node; a first capacitor between the first node and a third node configured to have an initialization voltage applied; and a second capacitor between a fourth node coupled to a gate electrode of the second transistor and the second node.Type: GrantFiled: April 13, 2015Date of Patent: August 20, 2019Assignee: Samsung Display Co., Ltd.Inventor: Ji Su Na
-
Publication number: 20190189059Abstract: A display device includes a plurality of pixel columns, a plurality of switching units, a number of which corresponds to a number of the pixel columns, and a plurality of data lines of which a number is one more than the number of the pixel columns, where each of the switching units includes a first switch which transfers a data voltage to a first data line to which some of a plurality of pixels included in a corresponding pixel column are connected, and a second switch which transfers a data voltage to a second data line to which the other of the pixels included in the corresponding pixel column are connected, and a second switch included in a first switching unit among the switching units is connected with a first switch included in a second switching unit adjacent to the first switching unit.Type: ApplicationFiled: August 8, 2018Publication date: June 20, 2019Inventors: Ji Su NA, Hee Jin JEON
-
Patent number: 10198997Abstract: A scan driving circuit includes a plurality of stages, each having a shift register and a scan signal output unit. The shift register has a first node to receive a first driving voltage according to a control signal and a second node to receive the first driving voltage according to a reset signal. The scan signal output unit outputs scan signals to respective scan lines. The scan signal output unit has a plurality of clock switches controlled according to a voltage of the first node and a plurality of switches controlled according to a voltage of the second node. The clock switches sequentially output clock signals to respective third nodes, which are connected to respective scan lines. The switches output a second driving voltage to the third nodes.Type: GrantFiled: September 16, 2015Date of Patent: February 5, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jin Tae Jeong, Ji Su Na