Patents by Inventor Jae Seob Lee
Jae Seob Lee 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: 20220336554Abstract: A display may include flexible substrate, a blocking layer on the flexible substrate, a pixel on the flexible substrate and the blocking layer, and a scan line, a data line, a driving voltage line, and an initialization voltage line connected to the pixel. The pixel may include an organic light emitting diode, a switching transistor connected to the scan line, and a driving transistor to apply a current to the organic light emitting diode. The blocking layer is in an area that overlaps the switching transistor on a plane, and between the switching transistor and the flexible substrate, and receives a voltage through a contact hole that exposes the blocking layer.Type: ApplicationFiled: June 29, 2022Publication date: October 20, 2022Applicant: Samsung Display Co., Ltd.Inventors: Seong Min WANG, Young-In HWANG, Yong Ho YANG, Yong Su LEE, Jae Seob LEE, Gyoo Chul JO
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Patent number: 11380746Abstract: A display may include flexible substrate, a blocking layer on the flexible substrate, a pixel on the flexible substrate and the blocking layer, and a scan line, a data line, a driving voltage line, and an initialization voltage line connected to the pixel. The pixel may include an organic light emitting diode, a switching transistor connected to the scan line, and a driving transistor to apply a current to the organic light emitting diode. The blocking layer is in an area that overlaps the switching transistor on a plane, and between the switching transistor and the flexible substrate, and receives a voltage through a contact hole that exposes the blocking layer.Type: GrantFiled: March 22, 2021Date of Patent: July 5, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seong Min Wang, Young-In Hwang, Yong Ho Yang, Yong Su Lee, Jae Seob Lee, Gyoo Chul Jo
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Publication number: 20220140038Abstract: An organic light emitting diode display according to an exemplary embodiment includes: a substrate; a first buffer layer on the substrate; a first semiconductor layer on the first buffer layer; a first gate insulating layer on the first semiconductor layer; a first gate electrode and a blocking layer on the first gate insulating layer; a second buffer layer on the first gate electrode; a second semiconductor layer on the second buffer layer; a second gate insulating layer on the second semiconductor layer; and a second gate electrode on the second gate insulating layer.Type: ApplicationFiled: January 11, 2022Publication date: May 5, 2022Applicant: Samsung Display Co., Ltd.Inventors: Joon Woo BAE, So Young KOO, Han Bit KIM, Thanh Tien NGUYEN, Kyoung Won LEE, Yong Su LEE, Jae Seob LEE, Gyoo Chul JO
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Patent number: 11257886Abstract: An organic light emitting diode display according to an exemplary embodiment includes: a substrate; a first buffer layer on the substrate; a first semiconductor layer on the first buffer layer; a first gate insulating layer on the first semiconductor layer; a first gate electrode and a blocking layer on the first gate insulating layer; a second buffer layer on the first gate electrode; a second semiconductor layer on the second buffer layer; a second gate insulating layer on the second semiconductor layer; and a second gate electrode on the second gate insulating layer.Type: GrantFiled: October 3, 2019Date of Patent: February 22, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Joon Woo Bae, So Young Koo, Han Bit Kim, Thanh Tien Nguyen, Kyoung Won Lee, Yong Su Lee, Jae Seob Lee, Gyoo Chul Jo
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Patent number: 11164526Abstract: A display device including pixels is provided. Each of the pixels includes a first transistor having a gate electrode connected to a first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the second node, and a third transistor having a first gate electrode connected to the first scan line, a second gate electrode, a first electrode connected to the first node, and a second electrode connected to the third node. The second gate electrode may be in a floating state, and the third transistor may be aged to alleviate a leakage current in order to improve image generation.Type: GrantFiled: March 6, 2020Date of Patent: November 2, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Keun Woo Kim, Mee Jae Kang, Han Bit Kim, Thanh Tien Nguyen, Yong Su Lee, Jae Seob Lee
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Patent number: 11158261Abstract: A display device includes: a pixel including: a light emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light emitting element to control a driving current, and including a first gate electrode connected to a first node and a second gate electrode connected to a bias control line; and a switching transistor connected between a data line and the first node, and including a gate electrode connected to a scan line; and a driving circuit to drive the pixel according to a driving frequency. The driving circuit drives the pixel in a first mode when the driving frequency is in a first range, and sequentially supplies a control signal having a first voltage and a second voltage to the bias control line during a light emission period of the pixel in the first mode.Type: GrantFiled: April 20, 2020Date of Patent: October 26, 2021Assignee: Samsung Display Co., Ltd.Inventors: Keun Woo Kim, Mee Jae Kang, Hye Na Kwak, Han Bit Kim, Thanh Tien Nguyen, Yong Su Lee, Jae Seob Lee
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Publication number: 20210304672Abstract: Provided is a display device. The display device comprises a substrate, and a plurality of sub-pixels disposed on the substrate and including alight emitting element and a sub-pixel circuit driving the light emitting element. The sub-pixel circuit comprises a driving transistor controlling a driving current flowing through the light emitting element, a first transistor and a second transistor connected in series between a first node, which is a drain electrode of the driving transistor, and a second node, which is a gate electrode of the driving transistor, to receive the same scan signal, and a gate auxiliary electrode disposed on a gate electrode of the first transistor or the second transistor. The gate auxiliary electrode is connected to the gate electrode of the first transistor or the second transistor.Type: ApplicationFiled: January 5, 2021Publication date: September 30, 2021Inventors: Keun Woo KIM, Tae Wook KANG, Doo Na KIM, Han Bit KIM, Jae Seob LEE, Jae Hwan CHU
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Publication number: 20210280652Abstract: A light emitting display device includes: a light emitting element; a second transistor connected to a scan line; a first transistor which applies a current to the light emitting element; a capacitor connected to a gate electrode of the first transistor; and a third transistor connected to an output electrode of the first transistor and the gate electrode of the first transistor. Channels of the second transistor, the first transistor, and the third transistor are disposed in a polycrystalline semiconductor layer, and a width of a channel of the third transistor is in a range of about 1 ?m to about 2 ?m, and a length of the channel of the third transistor is in a range of about 1 ?m to about 2.5 ?m.Type: ApplicationFiled: October 2, 2020Publication date: September 9, 2021Inventors: Keun Woo Kim, Tae Wook Kang, Han Bit Kim, Bum Mo Sung, Do Kyeong Lee, Jae Seob Lee
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Publication number: 20210210573Abstract: A display may include flexible substrate, a blocking layer on the flexible substrate, a pixel on the flexible substrate and the blocking layer, and a scan line, a data line, a driving voltage line, and an initialization voltage line connected to the pixel. The pixel may include an organic light emitting diode, a switching transistor connected to the scan line, and a driving transistor to apply a current to the organic light emitting diode. The blocking layer is in an area that overlaps the switching transistor on a plane, and between the switching transistor and the flexible substrate, and receives a voltage through a contact hole that exposes the blocking layer.Type: ApplicationFiled: March 22, 2021Publication date: July 8, 2021Applicant: Samsung Display Co., Ltd.Inventors: Seong Min WANG, Young-In HWANG, Yong Ho YANG, Yong Su LEE, Jae Seob LEE, Gyoo Chul JO
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Patent number: 10985227Abstract: A display may include flexible substrate, a blocking layer on the flexible substrate, a pixel on the flexible substrate and the blocking layer, and a scan line, a data line, a driving voltage line, and an initialization voltage line connected to the pixel. The pixel may include an organic light emitting diode, a switching transistor connected to the scan line, and a driving transistor to apply a current to the organic light emitting diode. The blocking layer is in an area that overlaps the switching transistor on a plane, and between the switching transistor and the flexible substrate, and receives a voltage through a contact hole that exposes the blocking layer.Type: GrantFiled: January 18, 2019Date of Patent: April 20, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seong Min Wang, Young-In Hwang, Yong Ho Yang, Yong Su Lee, Jae Seob Lee, Gyoo Chul Jo
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Publication number: 20210049958Abstract: A display device includes: a pixel including: a light emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light emitting element to control a driving current, and including a first gate electrode connected to a first node and a second gate electrode connected to a bias control line; and a switching transistor connected between a data line and the first node, and including a gate electrode connected to a scan line; and a driving circuit to drive the pixel according to a driving frequency. The driving circuit drives the pixel in a first mode when the driving frequency is in a first range, and sequentially supplies a control signal having a first voltage and a second voltage to the bias control line during a light emission period of the pixel in the first mode.Type: ApplicationFiled: April 20, 2020Publication date: February 18, 2021Inventors: Keun Woo KIM, Mee Jae KANG, Hye Na KWAK, Han Bit KIM, Thanh Tien NGUYEN, Yong Su LEE, Jae Seob LEE
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Patent number: 10896943Abstract: A display device is disclosed. In one aspect, the display device includes a flexible substrate including a first region, a second region separated from the first region, and a bending region positioned between the first and second regions. The bending region is configured to be bent so as to have a plurality of different curvatures depending on degrees of bending of the flexible substrate. The display device also includes a first display unit positioned in the first region, a second display unit separated from the first display unit and positioned in the second region and an encapsulation layer positioned over the flexible substrate with the first and second display units interposed therebetween. The encapsulation layer directly contacts the bending region of the flexible substrate.Type: GrantFiled: December 12, 2016Date of Patent: January 19, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Min-Sung Kim, Thanh Tien Nguyen, Jae Seob Lee, Ki Ju Im
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Publication number: 20200342815Abstract: A display device including pixels is provided. Each of the pixels includes a first transistor having a gate electrode connected to a first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the second node, and a third transistor having a first gate electrode connected to the first scan line, a second gate electrode, a first electrode connected to the first node, and a second electrode connected to the third node. The second gate electrode may be in a floating state, and the third transistor may be aged to alleviate a leakage current in order to improve image generation.Type: ApplicationFiled: March 6, 2020Publication date: October 29, 2020Applicant: Samsung Display Co., LTD.Inventors: Keun Woo KIM, Mee Jae KANG, Han Bit KIM, Thanh Tien NGUYEN, Yong Su LEE, Jae Seob LEE
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Publication number: 20200135831Abstract: An organic light emitting diode display includes a substrate, an overlap layer on the substrate, a semiconductor layer on the overlap layer, a first gate conductor on the semiconductor layer, a second gate conductor on the first gate conductor, a data conductor on the second gate conductor, a driving transistor on the overlap layer, and an organic light emitting diode connected with the driving transistor. The driving transistor includes, in the semiconductor layer, a first electrode, a second electrode, with a channel therebetween. A gate electrode of the first gate conductor overlaps the channel. The overlap layer overlaps the channel of the driving transistor and at least a portion of the first electrode. A storage line of the second gate conductor receives a driving voltage through a driving voltage line in the data conductor. The overlap layer receives a constant voltage.Type: ApplicationFiled: October 23, 2019Publication date: April 30, 2020Inventors: Joon Woo BAE, Mee Jae KANG, Thanh Tien NGUYEN, Kyoung Won LEE, Yong Su LEE, Jae Seob LEE, Gyoo Chul JO, Myoung Geun CHA
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Publication number: 20200111855Abstract: An organic light emitting diode display according to an exemplary embodiment includes: a substrate; a first buffer layer on the substrate; a first semiconductor layer on the first buffer layer; a first gate insulating layer on the first semiconductor layer; a first gate electrode and a blocking layer on the first gate insulating layer; a second buffer layer on the first gate electrode; a second semiconductor layer on the second buffer layer; a second gate insulating layer on the second semiconductor layer; and a second gate electrode on the second gate insulating layer.Type: ApplicationFiled: October 3, 2019Publication date: April 9, 2020Inventors: Joon Woo BAE, So Young KOO, Han Bit KIM, Thanh Tien NGUYEN, Kyoung Won LEE, Yong Su LEE, Jae Seob LEE, Gyoo Chul JO
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Publication number: 20200105850Abstract: An exemplary embodiment of the present disclosure provides a display device including: a substrate; a semiconductor layer disposed on the substrate; a first transistor including a first gate electrode disposed on the semiconductor layer; a light-emitting diode connected with the first transistor; and a first layer disposed between the substrate and the semiconductor layer, wherein the semiconductor layer includes a first electrode, a second electrode, and a channel disposed between the first electrode and the second electrode, the channel includes an impurity, and the first layer overlaps the first transistor.Type: ApplicationFiled: September 27, 2019Publication date: April 2, 2020Inventors: Mee Jae Kang, Joon Woo Bae, Thanh Tien Nguyen, Kyoung Won Lee, Yong Su Lee, Jae Seob Lee, Gyoo Chul Jo, Myoung Geun Cha
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Publication number: 20190305062Abstract: A display may include flexible substrate, a blocking layer on the flexible substrate, a pixel on the flexible substrate and the blocking layer, and a scan line, a data line, a driving voltage line, and an initialization voltage line connected to the pixel. The pixel may include an organic light emitting diode, a switching transistor connected to the scan line, and a driving transistor to apply a current to the organic light emitting diode. The blocking layer is in an area that overlaps the switching transistor on a plane, and between the switching transistor and the flexible substrate, and receives a voltage through a contact hole that exposes the blocking layer.Type: ApplicationFiled: January 18, 2019Publication date: October 3, 2019Inventors: Seong Min WANG, Young-In HWANG, Yong Ho YANG, Yong Su LEE, Jae Seob LEE, Gyoo Chul JO
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Patent number: 10056575Abstract: A flexible display apparatus, an organic light emitting display apparatus, and a mother substrate for flexible display apparatus that have improved durability and image quality. The flexible display apparatus includes a flexible substrate, a display region that is defined on the flexible substrate and that comprises a pixel unit and a circuit unit, a pad unit that is formed adjacent to the display region, and a deformation prevention unit that is disposed around the display region, that is separated from the pad unit, and that comprises a material having a greater rigidity than that of the flexible substrate.Type: GrantFiled: November 4, 2016Date of Patent: August 21, 2018Assignee: Samsung Display Co., Ltd.Inventors: Hyung-Sik Kim, Sung-Guk An, Yong-Hwan Park, Jae-Seob Lee
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Patent number: 10038041Abstract: A display device and a method of manufacturing the same are disclosed. In one aspect, the display device includes a flexible substrate, a thin film transistor (TFT) disposed over the flexible substrate, a first electrode disposed over the TFT, and a second electrode disposed over the first electrode. The flexible substrate includes a first incompressible liquid layer.Type: GrantFiled: September 9, 2016Date of Patent: July 31, 2018Assignee: Samsung Display Co., Ltd.Inventors: Thanh Tien Nguyen, Min-Sung Kim, Jae Seob Lee, Ki Ju Im
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Patent number: 9899558Abstract: A disclosed photosensor includes: a first electrode layer including a reflection part having an inclination surface; a first semiconductor layer positioned on the first electrode layer; a second electrode layer positioned on the first semiconductor layer; and a first dielectric layer and a second dielectric layer sequentially positioned on the second electrode layer, wherein the first dielectric layer and the second dielectric layer have different dielectric constant values. Further, the disclosed display device includes a plurality of pixel areas positioned on a substrate, and a sensor unit formed in at least some pixel areas among the plurality of pixel areas.Type: GrantFiled: May 12, 2016Date of Patent: February 20, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ki Ju Im, Min-Sung Kim, Thanh Tien Nguyen, Jae Seob Lee