Patents by Inventor Young-Jin Chang
Young-Jin Chang 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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Patent number: 11936409Abstract: A transmitter and a receiver are provided. The transmitter includes a processing unit configured to receive a clock signal and a data signal, set a value of a consecutive identical digit (CID) value related to the data signal and generate a modulation signal during a unit interval (UI) based on the data signal and the CID value, and a transmitter driver configured to output output signals having different voltage levels during the unit interval by receiving the modulation signal.Type: GrantFiled: March 1, 2022Date of Patent: March 19, 2024Assignees: Samsung Electronics Co., Ltd., Korea University Research and Business FoundationInventors: Chulwoo Kim, Jonghyuck Choi, Seungwoo Park, Hyun Woo Cho, Tae-Jin Kim, Jae Suk Yu, Kil Hoon Lee, Young Hwan Chang
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Patent number: 10475377Abstract: The present invention provides a display device and a method of driving the same.Type: GrantFiled: October 30, 2015Date of Patent: November 12, 2019Assignee: Samsung Display Co., Ltd.Inventors: Hyung-Don Na, Young-II Kim, Doo-Hyung Woo, Young-Jin Chang, Ji-Hye Eom, In-Do Chung, Seong-Hyun Jin
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Patent number: 9761651Abstract: A transparent organic light emitting display apparatus include a base substrate, a light blocking pattern disposed on the base substrate, a thin film transistor disposed on the base substrate, a first electrode disposed on the base substrate and electrically connected to the thin film transistor, a pixel defining layer disposed on the base substrate and overlapping the first light blocking pattern, a second electrode disposed on the base substrate, a light emitting structure disposed between the first electrode and the second electrode, and a second light blocking pattern overlapping the first light blocking pattern. The first light blocking pattern defines a first opening. The second light blocking pattern defines a second opening which overlaps the first opening. The pixel defining layer defines a third opening which overlaps the first and second openings configured to pass external light through the first to third openings.Type: GrantFiled: November 13, 2015Date of Patent: September 12, 2017Assignee: Samsung Display Co., Ltd.Inventors: Young-Jin Chang, Mu-Gyeom Kim
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Patent number: 9711087Abstract: A pixel includes an organic light emitting diode (OLED), a first transistor, a first capacitor, a second capacitor, and a pixel circuit. The OLED includes a cathode electrode connected to a second power source. The first transistor is connected between a data line and a first node, and turns on when a scan signal is supplied to a scan line. The first capacitor is connected between the first node and a third power source. The second capacitor is connected between the first node and a fourth power source. The pixel circuit controls a current quantity flowing from a first power source to the second power source through the OLED based on a voltage of the first node.Type: GrantFiled: April 18, 2014Date of Patent: July 18, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jae-Beom Choi, Kwang-Hae Kim, Seong-Hyun Jin, Young-Jin Chang
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Patent number: 9653525Abstract: A light emitting display device includes a substrate, a first electrode, a pixel defining layer, a light emitting layer, a second electrode, and a reflective pattern. The substrate includes a plurality of pixels, each including a top emission pixel in a first area and a bottom emission pixel in a second area. The first electrode is in the first area and the second area. The pixel defining layer includes pixel openings to expose the first electrode and reflective pattern openings between adjacent pixels. The light emitting layer is on the first electrode, and the second electrode is on the light emitting layer. The reflective pattern is in the reflective pattern opening and spaced from the second electrode in the first area.Type: GrantFiled: April 20, 2015Date of Patent: May 16, 2017Assignee: Samsung Display Co., Ltd.Inventors: Se Hun Park, Yong Duck Son, Jae Hwan Oh, Ji Youn Lee, Young Jin Chang, Jae Beom Choi
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Patent number: 9583552Abstract: An organic light emitting diode display includes a substrate; a gate wire on the substrate; an interlayer insulating layer covering the gate wire; a data wire on the interlayer insulating layer; a passivation layer on the data wire and the interlayer insulating layer and having a protection opening; a pixel electrode on a first wiring portion of the data wire exposed through the protection opening and the interlayer insulating layer; a pixel definition layer on the passivation layer and having a pixel opening exposing the pixel electrode; an organic emission layer covering the pixel electrode; and a common electrode covering the organic emission layer and the pixel definition layer, wherein the pixel electrode contacting the first wiring portion of the data wire and the interlayer insulating layer has protrusions and depressions.Type: GrantFiled: September 24, 2014Date of Patent: February 28, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jae Hwan Oh, Hwa Jin Noh, Se Hun Park, Won Kyu Lee, Young-Jin Chang
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Publication number: 20160293687Abstract: A transparent organic light emitting display apparatus include a base substrate, a light blocking pattern disposed on the base substrate, a thin film transistor disposed on the base substrate, a first electrode disposed on the base substrate and electrically connected to the thin film transistor, a pixel defining layer disposed on the base substrate and overlapping the first light blocking pattern, a second electrode disposed on the base substrate, a light emitting structure disposed between the first electrode and the second electrode, and a second light blocking pattern overlapping the first light blocking pattern. The first light blocking pattern defines a first opening. The second light blocking pattern defines a second opening which overlaps the first opening. The pixel defining layer defines a third opening which overlaps the first and second openings configured to pass external light through the first to third openings.Type: ApplicationFiled: November 13, 2015Publication date: October 6, 2016Inventors: Young-Jin CHANG, Mu-Gyeom KIM
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Publication number: 20160181332Abstract: A light emitting display device includes a substrate, a first electrode, a pixel defining layer, a light emitting layer, a second electrode, and a reflective pattern. The substrate includes a plurality of pixels, each including a top emission pixel in a first area and a bottom emission pixel in a second area. The first electrode is in the first area and the second area. The pixel defining layer includes pixel openings to expose the first electrode and reflective pattern openings between adjacent pixels. The light emitting layer is on the first electrode, and the second electrode is on the light emitting layer. The reflective pattern is in the reflective pattern opening and spaced from the second electrode in the first area.Type: ApplicationFiled: April 20, 2015Publication date: June 23, 2016Inventors: Se Hun PARK, Yong Duck SON, Jae Hwan OH, Ji Youn LEE, Young Jin CHANG, Jae Beom CHOI
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Publication number: 20160049115Abstract: The present invention provides a display device and a method of driving the same.Type: ApplicationFiled: October 30, 2015Publication date: February 18, 2016Inventors: Hyung-Don NA, Young-Il KIM, Doo-Hyung WOO, Young-Jin CHANG, Ji-Hye EOM, In-Do CHUNG, Seong-Hyun JIN
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Patent number: 9257360Abstract: A backplane for a display device and the display device are disclosed. In one aspect, the backplane includes a substrate, an active layer formed over the substrate including a channel region, a source region contacting a first side of the channel region, and a drain region contacting a second side of the channel region. The backplane further includes a gate electrode formed adjacent to the channel region, a source electrode electrically connected to the source region, and a drain electrode electrically connected to the drain region. The active layer includes a plurality of heat radiation pins that extend in a direction of the thickness of the active layer.Type: GrantFiled: March 18, 2014Date of Patent: February 9, 2016Assignee: Samsung Display Co., Ltd.Inventors: Young-Jun Shin, Se-Hun Park, Jae-Hwan Oh, Young-Jin Chang
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Patent number: 9236010Abstract: An array test method of an organic light emitting diode (OLED) display substrate is provided. The OLED display substrate includes a plurality of pixel circuits. Each pixel circuit includes an anode, a first transistor for transmitting a data signal that controls an amount of light emission of an OLED according to a scan signal, a driving transistor for receiving the data signal, generating a driving current corresponding to the data signal, and transmitting the driving current to the OLED, and a second transistor for diode-connecting a gate electrode and a drain electrode of the driving transistor. The array test method includes: injecting electrons or holes that generate an initialization voltage into the anode by turning on the second transistor; radiating electron beams at the anode; and determining whether or not the driving transistor performs normal operation from an amount of secondary electrons emitted from the anode.Type: GrantFiled: April 17, 2012Date of Patent: January 12, 2016Assignee: Samsung Display Co., Ltd.Inventors: Jae-Beom Choi, Won-Kyu Lee, Jae-Hwan Oh, Young-Jin Chang, Seong-Hyun Jin
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Patent number: 9209050Abstract: A laser crystallization system is disclosed. In one embodiment, the laser crystallization system includes i) a mother substrate including first, second, and third display regions sequentially arranged in a first direction and ii) a stage for supporting the mother substrate and moving in the first direction and in a second direction. The system also includes i) a first laser irradiation unit for irradiating a first laser beam having a width greater than or identical to a width of a side of one of the display regions in the first direction and ii) a second laser irradiation unit spaced apart from the first laser irradiation unit and irradiating a second laser beam having a width greater than or identical to the width of the side in the first direction. Furthermore, the first and second laser beams may correspond to widths of sides of the first and third display regions.Type: GrantFiled: February 19, 2014Date of Patent: December 8, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hwan Oh, Jae-Beom Choi, Won-Kyu Lee, Young-Jin Chang, Seong-Hyun Jin
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Patent number: 9184417Abstract: An organic light emitting display device includes: a substrate; a thin film transistor (TFT) on the substrate and including an active layer, a gate electrode, a source electrode, and a drain electrode; an organic light emitting device including a pixel electrode that contacts at least one of the source electrode or the drain electrode of the TFT, an interlayer including a light emitting layer, and a counter electrode facing the pixel electrode, the pixel electrode, the interlayer, and the counter electrode being stacked; and a cathode contact part including a first contact layer and a second contact layer, the first contact layer being at a same layer as the active layer and being doped with ion impurities, the second contact layer including a same material as the source electrode and the drain electrode and coupling the first contact layer and the counter electrode to each other.Type: GrantFiled: September 11, 2013Date of Patent: November 10, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hwan Oh, Won-Kyu Lee, Young-Jin Chang, Seong-Hyun Jin, Jae-Beom Choi
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Patent number: 9159866Abstract: A photo sensor, a method of manufacturing the photo sensor, and a display apparatus, the photo sensor including a substrate; a light receiving unit on the substrate, the light receiving unit including an amorphous semiconductor material; a first adjacent unit and a second adjacent unit formed as one body with the light receiving unit, the first adjacent unit and the second adjacent unit being separated from each other by the light receiving unit; a first photo sensor electrode electrically connected to the first adjacent unit; and a second photo sensor electrode electrically connected to the second adjacent unit, wherein at least one of the first adjacent unit and the second adjacent unit includes a crystalline semiconductor material.Type: GrantFiled: June 13, 2013Date of Patent: October 13, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Won-Kyu Lee, Jae-Hwan Oh, Seong-Hyun Jin, Young-Jin Chang, Jae-Beom Choi
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Publication number: 20150270327Abstract: An organic light emitting diode display includes a substrate; a gate wire on the substrate; an interlayer insulating layer covering the gate wire; a data wire on the interlayer insulating layer; a passivation layer on the data wire and the interlayer insulating layer and having a protection opening; a pixel electrode on a first wiring portion of the data wire exposed through the protection opening and the interlayer insulating layer; a pixel definition layer on the passivation layer and having a pixel opening exposing the pixel electrode; an organic emission layer covering the pixel electrode; and a common electrode covering the organic emission layer and the pixel definition layer, wherein the pixel electrode contacting the first wiring portion of the data wire and the interlayer insulating layer has protrusions and depressions.Type: ApplicationFiled: September 24, 2014Publication date: September 24, 2015Inventors: Jae Hwan Oh, Hwa Jin Noh, Se Hun Park, Won Kyu Lee, Young-Jin Chang
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Publication number: 20150155219Abstract: A backplane for a display device and the display device are disclosed. In one aspect, the backplane includes a substrate, an active layer formed over the substrate including a channel region, a source region contacting a first side of the channel region, and a drain region contacting a second side of the channel region. The backplane further includes a gate electrode formed adjacent to the channel region, a source electrode electrically connected to the source region, and a drain electrode electrically connected to the drain region. The active layer includes a plurality of heat radiation pins that extend in a direction of the thickness of the active layer.Type: ApplicationFiled: March 18, 2014Publication date: June 4, 2015Applicant: Samsung Display Co., Ltd.Inventors: Young-Jun Shin, Se-Hun Park, Jae-Hwan Oh, Young-Jin Chang
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Patent number: 9035215Abstract: A laser irradiation apparatus for irradiating a laser beam to a semiconductor layer including a plurality of pixel areas, the apparatus includes a laser generator generating the laser beam, and an optical switching unit time-dividing the laser beam generated from the laser generator and transmitting a plurality of time-divided laser beams to a plurality of optical systems. The apparatus includes a first optical system of the plurality of optical systems that receives a first time-divided laser beam and irradiates a first laser slit beam along a first irradiation direction, and a second optical system of the plurality of optical systems that receives a second time-divided laser beam and irradiates a second laser slit beam along a second irradiation direction that is parallel with the first irradiation direction. The first laser slit beam and the second laser slit beam crystallize partial areas at a same location in the respective pixel areas.Type: GrantFiled: June 14, 2011Date of Patent: May 19, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Won-Kyu Lee, Jae-Beom Choi, Jae-Hwan Oh, Young-Jin Chang, Seong-Hyun Jin
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Patent number: 8927997Abstract: A substrate includes a thin film transistor (TFT) which includes an active layer, a gate electrode, a source electrode, and a drain electrode; a first insulating layer disposed between the active layer and the gate electrode; a second insulating layer disposed between the gate electrode and the source and drain electrodes; a third insulating layer disposed on the second insulating layer, and including a first region for opening the second insulating layer and a second region for opening one of the source and drain electrodes, the first region and the second region being integrally connected; and a first electrode connected to one of the source and drain electrodes, and disposed so as to cover the first region and the second region.Type: GrantFiled: June 29, 2012Date of Patent: January 6, 2015Assignee: Samsung Display Co., Ltd.Inventors: Won-Kyu Lee, Young-Jin Chang, Seong-Hyun Jin
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Publication number: 20140320476Abstract: A pixel includes an organic light emitting diode (OLED), a first transistor, a first capacitor, a second capacitor, and a pixel circuit. The OLED includes a cathode electrode connected to a second power source. The first transistor is connected between a data line and a first node, and turns on when a scan signal is supplied to a scan line. The first capacitor is connected between the first node and a third power source. The second capacitor is connected between the first node and a fourth power source. The pixel circuit controls a current quantity flowing from a first power source to the second power source through the OLED based on a voltage of the first node.Type: ApplicationFiled: April 18, 2014Publication date: October 30, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jae-Beom CHOI, Kwang-Hae KIM, Seong-Hyun JIN, Young-Jin CHANG
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Patent number: 8865578Abstract: An embodiment is directed to a method of manufacturing a polycrystalline silicon layer, the method including providing a crystallization substrate, the crystallization substrate having an amorphous silicon layer on a first substrate, providing a reflection substrate, the reflection substrate having a first region with a reflection panel therein and a second region without the reflection panel, disposing the crystallization substrate and the reflection substrate on one another, and selectively crystallizing the amorphous silicon layer by directing a laser beam onto the crystallization substrate and the reflection substrate, and reflecting the laser beam from the reflection panel.Type: GrantFiled: July 20, 2011Date of Patent: October 21, 2014Assignee: Samsung Display Co., Ltd.Inventors: Young-Jin Chang, Jae-Hwan Oh, Won-Kyu Lee, Seong-Hyun Jin, Jae-Beom Choi