Patents by Inventor Wang Jo Lee
Wang Jo 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: 20180145119Abstract: An organic light emitting display (OLED) device includes a substrate including a light emitting region and a peripheral region. An auxiliary power supply wire is disposed in the peripheral region. A lower electrode is disposed in the light emitting region. A pixel defining layer, disposed on the substrate, exposes a portion of the lower electrode and a portion of the auxiliary power supply wire. A first common layer, disposed on the pixel defining layer and the lower electrode, exposes the auxiliary power supply wire. A light emitting structure is disposed on the first common layer. The light emitting structure exposes the auxiliary power supply wire. A second common layer is disposed on the light emitting structure, the second common layer covering the light emitting structure and exposing the auxiliary power supply wire. An upper electrode is disposed on the second common layer and contacts the auxiliary power supply wire.Type: ApplicationFiled: January 3, 2018Publication date: May 24, 2018Inventors: Deok-Young CHOI, Young-Jin CHO, Yong-Jae KIM, Kyoung-Jin PARK, Jin-Gon OH, Wang-Jo LEE
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Patent number: 9893128Abstract: An organic light emitting display (OLED) device includes a substrate including a light emitting region and a peripheral region. An auxiliary power supply wire is disposed in the peripheral region. A lower electrode is disposed in the light emitting region. A pixel defining layer, disposed on the substrate, exposes a portion of the lower electrode and a portion of the auxiliary power supply wire. A first common layer, disposed on the pixel defining layer and the lower electrode, exposes the auxiliary power supply wire. A light emitting structure is disposed on the first common layer. The light emitting structure exposes the auxiliary power supply wire. A second common layer is disposed on the light emitting structure, the second common layer covering the light emitting structure and exposing the auxiliary power supply wire. An upper electrode is disposed on the second common layer and contacts the auxiliary power supply wire.Type: GrantFiled: December 27, 2016Date of Patent: February 13, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Deok-Young Choi, Young-Jin Cho, Yong-Jae Kim, Kyoung-Jin Park, Jin-Gon Oh, Wang-Jo Lee
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Publication number: 20170278910Abstract: An organic light emitting display (OLED) device includes a substrate including a light emitting region and a peripheral region. An auxiliary power supply wire is disposed in the peripheral region. A lower electrode is disposed in the light emitting region. A pixel defining layer, disposed on the substrate, exposes a portion of the lower electrode and a portion of the auxiliary power supply wire. A first common layer, disposed on the pixel defining layer and the lower electrode, exposes the auxiliary power supply wire. A light emitting structure is disposed on the first common layer. The light emitting structure exposes the auxiliary power supply wire. A second common layer is disposed on the light emitting structure, the second common layer covering the light emitting structure and exposing the auxiliary power supply wire. An upper electrode is disposed on the second common layer and contacts the auxiliary power supply wire.Type: ApplicationFiled: December 27, 2016Publication date: September 28, 2017Inventors: Deok-Young CHOI, Young-Jin CHO, Yong-Jae KIM, Kyoung-Jin PARK, Jin-Gon OH, Wang-Jo LEE
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Patent number: 9589503Abstract: An organic light-emitting display apparatus includes: a power voltage generation unit configured to generate a first power voltage and a dummy power voltage having a different level from that of the first power voltage; a power voltage wiring network to which the first power voltage is applied; a dummy power voltage line to which the dummy power voltage is applied; a plurality of pixels each comprising an emission device and a pixel circuit electrically coupled to the power voltage wiring network; a plurality of dummy pixels each comprising a dummy circuit connectable to the dummy power voltage line; and a plurality of repair lines each connectable to the dummy circuit of a corresponding dummy pixel among the plurality of dummy pixels and to the emission devices of corresponding pixels among the plurality of pixels.Type: GrantFiled: July 16, 2014Date of Patent: March 7, 2017Assignee: Samsung Display Co., Ltd.Inventors: Ji-Hye Kong, Sung-Jae Moon, Wang-Jo Lee
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Patent number: 9542882Abstract: An organic light emitting diode display includes: a panel; a data driver connected to a data line formed on the panel; a gate driver crossing the data line in an insulated manner and connected to gate lines formed on the panel; an input line for receiving clock signals from the outside; a first connecting line electrically connected to the input line to supply the clock signal to the gate driver; a second connecting line electrically connected to the input line; and a third connecting line extended from the second connecting line to electrically connect the second connecting line and the first connecting line.Type: GrantFiled: November 29, 2011Date of Patent: January 10, 2017Assignee: Samsung Display Co., Ltd.Inventors: Ki-Nyeng Kang, Na-Young Kim, Wang-Jo Lee, In-Ho Choi, Yong-Sung Park
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Patent number: 9437141Abstract: A scan driver includes: a plurality of scan driving blocks including an output terminal outputting a scan signal to a scan line; a first transistor transmitting a voltage of a power source to the output terminal; a second transistor transmitting a clock signal to the output terminal; and a third transistor including a gate electrode connected to a node formed with a gate-on voltage turning on the second transistor, one terminal connected to the power source, and the other terminal connected to the gate electrode of the first transistor. The scan driver may reduce the influence of a leakage current even though application of the scan signal is increased, and a scan signal of a uniform voltage level may be output.Type: GrantFiled: July 27, 2011Date of Patent: September 6, 2016Assignee: Samsung Display Co., Ltd.Inventors: Wang-Jo Lee, Hyung-Soo Kim, In-Ho Choi, Choon-Yul Oh, Ho-Ryun Chung, Joo-Hyeon Jeong, Myoung-Hwan Yoo, Jin-Woo Kim, Naoaki Komiya
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Patent number: 9384695Abstract: An organic light-emitting display apparatus for forming a frame by utilizing a plurality of subfields to display gradation. The organic light-emitting display apparatus includes a light-emitting pixel on a display area, a dummy pixel on a dummy area adjacent to the display area, and a repair line coupled to the dummy pixel. The light-emitting pixel is configured to emit light according to a logic level of a data signal applied during each of the subfields, and to adjust an emission time. The repair line is configured to couple the dummy pixel to a light-emitting element when the light-emitting element is separated from the light-emitting pixel, to provide a path to control a light emission of the light-emitting element according to a logic level of a dummy data signal applied to the dummy pixel.Type: GrantFiled: April 22, 2014Date of Patent: July 5, 2016Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hoon Lee, Sung-Jae Moon, Wang-Jo Lee, Jong-Hyun Choi, Yong-Duck Son
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Patent number: 9293516Abstract: A display device comprises a substrate, a first pixel on the substrate, the first pixel comprising a first subpixel, a second subpixel, and a third subpixel, a second pixel on the substrate, the second pixel comprising a fourth subpixel, a fifth subpixel, and a sixth subpixel, first, second, third and fourth power supply lines extending in one direction and respectively coupled to the first, third, fifth, and sixth subpixels, and fifth and sixth power supply lines crossing the first, second, third, and fourth power supply lines and respectively coupled to the fourth and second subpixels.Type: GrantFiled: July 10, 2014Date of Patent: March 22, 2016Assignee: Samsung Display Co., Ltd.Inventors: Deok-Young Choi, Wang-Jo Lee
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Patent number: 9257069Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.Type: GrantFiled: December 17, 2013Date of Patent: February 9, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Leonid Kaplan, Heung-Yeol Na, Ho-Ryun Chung, Wang-Jo Lee, Jang-Doo Lee
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Publication number: 20150248861Abstract: An organic light-emitting display apparatus includes: a power voltage generation unit configured to generate a first power voltage and a dummy power voltage having a different level from that of the first power voltage; a power voltage wiring network to which the first power voltage is applied; a dummy power voltage line to which the dummy power voltage is applied; a plurality of pixels each comprising an emission device and a pixel circuit electrically coupled to the power voltage wiring network; a plurality of dummy pixels each comprising a dummy circuit connectable to the dummy power voltage line; and a plurality of repair lines each connectable to the dummy circuit of a corresponding dummy pixel among the plurality of dummy pixels and to the emission devices of corresponding pixels among the plurality of pixels.Type: ApplicationFiled: July 16, 2014Publication date: September 3, 2015Inventors: Ji-Hye Kong, Sung-Jae Moon, Wang-Jo Lee
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Patent number: 9105230Abstract: An organic light emitting diode (OLED) display is disclosed. In one embodiment, the OLED display includes a panel including pixels which are configured to control an amount of current that flows from a first power source to a second power source to generate an image of predetermined brightness. The display may also include at least one first power source line formed on a top of the panel and at least one second power source line positioned on a bottom of the panel to face the first power source line. The display may further include a first switch configured to alternately supply the first power source to the first power source line and the second power source line.Type: GrantFiled: April 30, 2012Date of Patent: August 11, 2015Assignee: Samsung Display Co., Ltd.Inventors: Ki-Wook Kim, Wang-Jo Lee, Dae-Hyun Noh
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Publication number: 20150187859Abstract: A display device comprises a substrate, a first pixel on the substrate, the first pixel comprising a first subpixel, a second subpixel, and a third subpixel, a second pixel on the substrate, the second pixel comprising a fourth subpixel, a fifth subpixel, and a sixth subpixel, first, second, third and fourth power supply lines extending in one direction and respectively coupled to the first, third, fifth, and sixth subpixels, and fifth and sixth power supply lines crossing the first, second, third, and fourth power supply lines and respectively coupled to the fourth and second subpixels.Type: ApplicationFiled: July 10, 2014Publication date: July 2, 2015Inventors: Deok-Young Choi, Wang-Jo Lee
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Patent number: 9058774Abstract: A pixel includes a first transistor coupled between a first power source and a first node, the first transistor including a gate electrode coupled to a second node, an organic light emitting diode (OLED) coupled between the first node and a second power source, a second transistor for supplying a data signal to the second node in response to a scan signal, a third transistor having a source electrode and a drain electrode electrically coupled to each other, the third transistor being coupled to the first power source and the second node, and a fourth transistor having a source electrode and a drain electrode electrically coupled to each other, the fourth transistor being coupled between the second node and the first node.Type: GrantFiled: May 9, 2012Date of Patent: June 16, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jeong-Keun Ahn, Wang-Jo Lee
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Publication number: 20150161931Abstract: An organic light-emitting display apparatus for forming a frame by utilizing a plurality of subfields to display gradation. The organic light-emitting display apparatus includes a light-emitting pixel on a display area, a dummy pixel on a dummy area adjacent to the display area, and a repair line coupled to the dummy pixel. The light-emitting pixel is configured to emit light according to a logic level of a data signal applied during each of the subfields, and to adjust an emission time. The repair line is configured to couple the dummy pixel to a light-emitting element when the light-emitting element is separated from the light-emitting pixel, to provide a path to control a light emission of the light-emitting element according to a logic level of a dummy data signal applied to the dummy pixel.Type: ApplicationFiled: April 22, 2014Publication date: June 11, 2015Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jae-Hoon Lee, Sung-Jae Moon, Wang-Jo Lee, Jong-Hyun Choi, Yong-Duck Son
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Patent number: 9053986Abstract: A semiconductor device includes a semiconductor layer on a substrate, a gate electrode electrically insulated from the semiconductor layer by a gate insulating layer, an insulating layer on the gate insulating layer and on the gate electrode, and a source electrode and a drain electrode on the insulating layer, the source and drain electrode being connected to the semiconductor layer. The source electrode overlaps at least a part of the gate electrode. The source electrode, the insulating layer, and the gate electrode overlap each other so as to provide a capacitor.Type: GrantFiled: June 21, 2012Date of Patent: June 9, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jeong-Keun Ahn, Wang-Jo Lee
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Patent number: 9047821Abstract: A scan driver includes a first decoder generating a plurality of output signals through a plurality of first logic gates, and a second decoder including a plurality of first logic circuits connected to a first terminal of a plurality of scan lines and a plurality of second logic circuits connected to a second terminal of the plurality of scan lines. The plurality of first logic circuits supply a source current to a corresponding scan line according to the corresponding output signal among the plurality of output signals. The plurality of second logic circuits sinks a sink current to the corresponding scan line according to the corresponding output signal among the plurality of output signals.Type: GrantFiled: February 4, 2011Date of Patent: June 2, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Do-Ik Kim, Wang-Jo Lee
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Publication number: 20150015467Abstract: A display device includes: a unit pixel including subpixels electrically connected to first power voltages and a second power voltage, where the first power voltages include a first first power voltage and a second first power voltage, and where the subpixels include: a first subpixel electrically connected to the first first power voltage and the second power voltage; a second subpixel electrically connected to the second first power voltage and the second power voltage; and a third subpixel electrically connected to the second first power voltage and the second power voltage, where the first power voltage is a voltage having substantially a same level as a voltage, with which the first subpixel emits light at maximum luminance, and the second power voltage is a voltage having substantially a same level as a voltage, with which the second subpixel or the third subpixel emits light at maximum luminance.Type: ApplicationFiled: December 3, 2013Publication date: January 15, 2015Applicant: Samsung Display Co., Ltd.Inventors: Leonid KAPLAN, Heung-Yeol NA, Ho-Ryun CHUNG, Wang-Jo LEE, Jang-Doo LEE
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Patent number: 8916878Abstract: A thin film transistor includes a substrate, a gate electrode on the substrate, an active layer spaced from the gate electrode, a source electrode and a drain electrode spaced from the gate electrode and coupled to the active layer, a gate wiring at a same layer as the gate electrode and coupled to the gate electrode, and first conductive members electrically coupled to, and overlapping, the gate wiring.Type: GrantFiled: March 12, 2013Date of Patent: December 23, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jung-Bae Kim, Yong-Sung Park, Wang-Jo Lee, Hae-Yeon Lee, Keum-Nam Kim
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Publication number: 20140313242Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.Type: ApplicationFiled: December 17, 2013Publication date: October 23, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Leonid KAPLAN, Heung-Yeol NA, Ho-Ryun CHUNG, Wang-Jo LEE, Jang-Doo LEE
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Patent number: 8785936Abstract: An organic electroluminescent display device including a plurality of scan lines and a plurality of data lines crossing the scan lines, a plurality of pixels at regions defined by the scan lines and the data lines, and one or more thin-film transistors (TFTs) for selectively applying voltages to each of the pixels, wherein the data lines are successively located at a side of the pixels, and a first TFT of the TFTs is located at least partially between an area corresponding to an nth data line of the data lines and an area corresponding to an (n?1)th data line of the data lines, the nth data line and the (n?1)th data line being successively positioned.Type: GrantFiled: September 23, 2011Date of Patent: July 22, 2014Assignee: Samsung Display Co., Ltd.Inventors: Na-Young Kim, Ki-Nyeng Kang, Wang-Jo Lee, In-Ho Choi, Jin-Gon Oh