Patents by Inventor Ki-Wan Ahn
Ki-Wan Ahn 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).
-
Patent number: 11552151Abstract: A display device includes: a substrate; signal lines including a gate line, a data line, and a driving voltage line that collectively define an outer boundary of a pixel area; a transistor connected to the signal line; a first electrode extending across the pixel area and formed on the signal line and the transistor, and connected to the transistor, the first electrode having a first portion overlying only the signal line and the transistor, and a second portion including all of the first electrode not included in the first portion; a pixel defining layer formed on only the first portion of the first electrode; an organic emission layer formed on substantially the entire second portion but not on the first portion; and a second electrode formed on the pixel defining layer and the organic emission layer.Type: GrantFiled: May 26, 2021Date of Patent: January 10, 2023Inventors: Joung-Keun Park, Ki Wan Ahn, Joo Sun Yoon
-
Patent number: 11158262Abstract: A display device includes a display panel including pixels; a panel driver to supply a scan signal and a data signal to the pixels; and a power supply to generate a first supply voltage and a second supply voltage, and to change the first supply voltage and/or the second supply voltage to provide it to the pixels. The pixels emit light in response to the scan signal based on the data signal during an emission period where a voltage difference between the first supply voltage and the second supply voltage is larger than a first reference voltage. A first voltage difference between the first supply voltage and the second supply voltage at a start of the emission period is larger than an average voltage difference between the first supply voltage and the second supply voltage throughout the emission period.Type: GrantFiled: June 19, 2019Date of Patent: October 26, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Bon Seog Gu, Hong Soo Kim, Woo Mi Bae, Ki Wan Ahn, Joo Sun Yoon, Chong Chul Chai
-
Publication number: 20210280654Abstract: A display device includes: a substrate; signal lines including a gate line, a data line, and a driving voltage line that collectively define an outer boundary of a pixel area; a transistor connected to the signal line; a first electrode extending across the pixel area and formed on the signal line and the transistor, and connected to the transistor, the first electrode having a first portion overlying only the signal line and the transistor, and a second portion including all of the first electrode not included in the first portion; a pixel defining layer formed on only the first portion of the first electrode; an organic emission layer formed on substantially the entire second portion but not on the first portion; and a second electrode formed on the pixel defining layer and the organic emission layer.Type: ApplicationFiled: May 26, 2021Publication date: September 9, 2021Inventors: Joung-Keun PARK, Ki Wan AHN, Joo Sun YOON
-
Patent number: 11094764Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.Type: GrantFiled: January 3, 2020Date of Patent: August 17, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung-Eun Lee, Jin-Taek Kim, Ki-Wan Ahn, Joo-Sun Yoon, Yong-Jae Jang, Kwang-Young Choi
-
Patent number: 11067801Abstract: A head-mounted display device includes a display including a substrate and a plurality of display elements disposed on the substrate, a first polarizing layer disposed on the display, a reflective layer disposed on the first polarizing layer, a light-separating layer disposed on the reflective layer, a lens disposed on the light-separating layer, and a second polarizing layer disposed on the lens.Type: GrantFiled: September 19, 2018Date of Patent: July 20, 2021Assignee: Samsung Display Co., Ltd.Inventors: Wal Jun Kim, Jin Yeong Kim, Ki Wan Ahn, Joo Sun Yoon, Yong Jae Jang
-
Patent number: 11024690Abstract: Provided is a display device, including: a substrate; signal lines including a gate line, a data line, and a driving voltage line that collectively define an outer boundary of a pixel area; a transistor connected to the signal line; a first electrode extending across the pixel area and formed on the signal line and the transistor, and connected to the transistor, the first electrode having a first portion overlying only the signal line and the transistor, and a second portion comprising all of the first electrode not included in the first portion; a pixel defining layer formed on only the first portion of the first electrode; an organic emission layer formed on substantially the entire second portion but not on the first portion; and a second electrode formed on the pixel defining layer and the organic emission layer.Type: GrantFiled: September 10, 2019Date of Patent: June 1, 2021Inventors: Joung-Keun Park, Ki Wan Ahn, Joo Sun Yoon
-
Patent number: 10741632Abstract: A display device including a first signal line disposed on a substrate, a first insulating layer disposed on the first signal line, and a second signal line disposed on the first insulating layer and crossing the first signal line, in which the first insulating layer includes a recess portion providing a surface height lower than other areas of the first insulating layer, and the first signal line and the second signal line overlap each other with the recess portion therebetween.Type: GrantFiled: December 31, 2018Date of Patent: August 11, 2020Assignee: Samsung Display Co., Ltd.Inventors: Pil Suk Lee, Jin Taek Kim, Ki Wan Ahn
-
Publication number: 20200144346Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.Type: ApplicationFiled: January 3, 2020Publication date: May 7, 2020Inventors: Sung-Eun LEE, Jin-Taek KIM, Ki-Wan AHN, Joo-Sun YOON, Yong-Jae JANG, Kwang-Young CHOI
-
Publication number: 20200066207Abstract: A display device includes a display panel including pixels; a panel driver to supply a scan signal and a data signal to the pixels; and a power supply to generate a first supply voltage and a second supply voltage, and to change the first supply voltage and/or the second supply voltage to provide it to the pixels. The pixels emit light in response to the scan signal based on the data signal during an emission period where a voltage difference between the first supply voltage and the second supply voltage is larger than a first reference voltage. A first voltage difference between the first supply voltage and the second supply voltage at a start of the emission period is larger than an average voltage difference between the first supply voltage and the second supply voltage throughout the emission period.Type: ApplicationFiled: June 19, 2019Publication date: February 27, 2020Inventors: Bon Seog GU, Hong Soo KIM, Woo Mi BAE, Ki Wan AHN, Joo Sun YOON, Chong Chul CHAI
-
Patent number: 10553661Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.Type: GrantFiled: September 25, 2017Date of Patent: February 4, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung-Eun Lee, Jin-Taek Kim, Ki-Wan Ahn, Joo-Sun Yoon, Yong-Jae Jang, Kwang-Young Choi
-
Publication number: 20200006454Abstract: Provided is a display device, including: a substrate; signal lines including a gate line, a data line, and a driving voltage line that collectively define an outer boundary of a pixel area; a transistor connected to the signal line; a first electrode extending across the pixel area and formed on the signal line and the transistor, and connected to the transistor, the first electrode having a first portion overlying only the signal line and the transistor, and a second portion comprising all of the first electrode not included in the first portion; a pixel defining layer formed on only the first portion of the first electrode; an organic emission layer formed on substantially the entire second portion but not on the first portion; and a second electrode formed on the pixel defining layer and the organic emission layer.Type: ApplicationFiled: September 10, 2019Publication date: January 2, 2020Inventors: Joung-Keun PARK, Ki Wan AHN, Joo Sun YOON
-
Patent number: 10418433Abstract: Provided is a display device, including: a substrate; signal lines including a gate line, a data line, and a driving voltage line that collectively define an outer boundary of a pixel area; a transistor connected to the signal line; a first electrode extending across the pixel area and formed on the signal line and the transistor, and connected to the transistor, the first electrode having a first portion overlying only the signal line and the transistor, and a second portion comprising all of the first electrode not included in the first portion; a pixel defining layer formed on only the first portion of the first electrode; an organic emission layer formed on substantially the entire second portion but not on the first portion; and a second electrode formed on the pixel defining layer and the organic emission layer.Type: GrantFiled: January 9, 2018Date of Patent: September 17, 2019Assignee: Samsung Display Co., Ltd.Inventors: Joung-Keun Park, Ki Wan Ahn, Joo Sun Yoon
-
Patent number: 10347869Abstract: A method of manufacturing an organic light-emitting display device is provided. The method includes forming a pixel electrode, forming a hydrophobic material layer on the pixel electrode, wherein the hydrophobic material layer includes a hydrophobic material, forming a pixel-defining layer by patterning the hydrophobic material layer, so as to expose at least a portion of the pixel electrode, and removing the hydrophobic material on the exposed portion of the pixel electrode using surface treatment.Type: GrantFiled: September 13, 2016Date of Patent: July 9, 2019Assignee: Samsung Display Co., Ltd.Inventors: Ki-Wan Ahn, Jae-Hyuck Jang
-
Patent number: 10347704Abstract: An organic light-emitting diode (OLED) display device includes a substrate, a first gate electrode on the substrate, a second gate electrode on the first gate electrode and at least partially overlapping the first gate electrode, a semiconductor pattern between the first gate electrode and the second gate electrode and at least partially overlapping the first and second gate electrodes, a connecting electrode on the second gate electrode and electrically connected to the semiconductor pattern, and a pixel electrode on the connecting electrode and electrically connected to the connecting electrode.Type: GrantFiled: October 13, 2017Date of Patent: July 9, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Wal Jun Kim, Yong Jae Jang, Ki Wan Ahn, Joo Sun Yoon
-
Publication number: 20190206977Abstract: A display device including a first signal line disposed on a substrate, a first insulating layer disposed on the first signal line, and a second signal line disposed on the first insulating layer and crossing the first signal line, in which the first insulating layer includes a recess portion providing a surface height lower than other areas of the first insulating layer, and the first signal line and the second signal line overlap each other with the recess portion therebetween.Type: ApplicationFiled: December 31, 2018Publication date: July 4, 2019Inventors: Pil Suk Lee, Jin Taek Kim, Ki Wan Ahn
-
Patent number: 10319711Abstract: An organic light emitting display device includes a substrate including a pixel region and a peripheral region, a first wiring, a second wiring, a third wiring, and an electrostatic protection structure including electrostatic protection diodes coupled to the first, second, and third wirings. The electrostatic protection diodes each include an active pattern, a gate electrode pattern, and a connection pattern. The active pattern is at the peripheral region of the substrate, and has a first region, a second region spaced apart from the first region, and a third region between the first and second regions. The gate electrode pattern is at the third region on the active pattern. The connection pattern is coupled to the gate electrode pattern and the active pattern and is on the gate electrode pattern, and overlaps a portion of the first region of the active pattern and a portion of the third region.Type: GrantFiled: June 30, 2017Date of Patent: June 11, 2019Assignee: Samsung Display Co., Ltd.Inventors: Jung-Hyun Kim, Yeon-Hong Kim, Ki-Wan Ahn
-
Publication number: 20190086671Abstract: A head-mounted display device includes a display including a substrate and a plurality of display elements disposed on the substrate, a first polarizing layer disposed on the display, a reflective layer disposed on the first polarizing layer, a light-separating layer disposed on the reflective layer, a lens disposed on the light-separating layer, and a second polarizing layer disposed on the lens.Type: ApplicationFiled: September 19, 2018Publication date: March 21, 2019Inventors: Wal Jun Kim, Jin Yeong Kim, Ki Wan Ahn, Joo Sun Yoon, Yong Jae Jang
-
Publication number: 20180158891Abstract: Provided is a display device, including: a substrate; signal lines including a gate line, a data line, and a driving voltage line that collectively define an outer boundary of a pixel area; a transistor connected to the signal line; a first electrode extending across the pixel area and formed on the signal line and the transistor, and connected to the transistor, the first electrode having a first portion overlying only the signal line and the transistor, and a second portion comprising all of the first electrode not included in the first portion; a pixel defining layer formed on only the first portion of the first electrode; an organic emission layer formed on substantially the entire second portion but not on the first portion; and a second electrode formed on the pixel defining layer and the organic emission layer.Type: ApplicationFiled: January 9, 2018Publication date: June 7, 2018Inventors: Joung-Keun PARK, Ki Wan AHN, Joo Sun YOON
-
Publication number: 20180122880Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.Type: ApplicationFiled: September 25, 2017Publication date: May 3, 2018Inventors: Sung-Eun LEE, Jin-Taek KIM, Ki-Wan AHN, Joo-Sun YOON, Yong-Jae JANG, Kwang-Young CHOI
-
Publication number: 20180108720Abstract: An organic light-emitting diode (OLED) display device includes a substrate, a first gate electrode on the substrate, a second gate electrode on the first gate electrode and at least partially overlapping the first gate electrode, a semiconductor pattern between the first gate electrode and the second gate electrode and at least partially overlapping the first and second gate electrodes, a connecting electrode on the second gate electrode and electrically connected to the semiconductor pattern, and a pixel electrode on the connecting electrode and electrically connected to the connecting electrode.Type: ApplicationFiled: October 13, 2017Publication date: April 19, 2018Inventors: Wal Jun KIM, Yong Jae JANG, Ki Wan AHN, Joo Sun YOON