Patents by Inventor Jun-Woo Hong
Jun-Woo Hong 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: 20240178201Abstract: A light-emitting element ink, a display device, and a method of fabricating the display device are provided. The light-emitting element ink includes a light-emitting element solvent, light-emitting elements dispersed in the light-emitting element solvent, each of the light-emitting elements including a plurality of semiconductor layers and an insulating film that surrounds parts of outer surfaces of the semiconductor layers, and a surfactant dispersed in the light-emitting element solvent, the surfactant including a fluorine-based and/or a silicon-based surfactant.Type: ApplicationFiled: February 5, 2024Publication date: May 30, 2024Inventors: Jun Bo SIM, Duk Ki KIM, Yong Hwi KIM, Hyo Jin KO, Chang Hee LEE, Chan Woo JOO, Jae Kook HA, Na Mi HONG
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Publication number: 20240178450Abstract: An embodiment electrolyte solution includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes 4-((tert-butoxydimethylsilyl)methyl)-5-methyl-1,3-dioxol-2-one represented by as an electrode film additive. An embodiment lithium secondary battery includes the above-described electrolyte solution, a positive electrode including a positive electrode active material including Ni, Co, and Mn, a negative electrode including a carbon-based negative electrode active material or a silicon-based negative electrode active material, and a separator interposed between the positive electrode and the negative electrode.Type: ApplicationFiled: November 8, 2023Publication date: May 30, 2024Inventors: Ko Eun Kim, Sung Ho Ban, Yoon Sung Lee, Jun Ki Rhee, Hui Beom Nam, Hyeon Gyu Moon, Nam-Soon Choi, Jeong Woo Lee, Sung You Hong
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ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME
Publication number: 20240170724Abstract: An embodiment electrolyte solution includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes an electrode film additive of 2-(dodec-1-en-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane represented by An embodiment lithium secondary battery includes this electrolyte solution, a positive electrode including a positive-electrode active material including Ni, Co, and Mn, a negative electrode including a negative-electrode active material including a carbon (C)-based material or a silicon (Si)-based material, and a separator interposed between the positive electrode and the negative electrode.Type: ApplicationFiled: November 8, 2023Publication date: May 23, 2024Inventors: Ko Eun Kim, Sung Ho Ban, Yoon Sung Lee, Jun Ki Rhee, Hui Beom Nam, Hyeon Gyu Moon, Nam-Soon Choi, Jeong Woo Lee, Sung You Hong -
Patent number: 11935876Abstract: A light-emitting element ink, a display device, and a method of fabricating the display device are provided. The light-emitting element ink includes a light-emitting element solvent, light-emitting elements dispersed in the light-emitting element solvent, each of the light-emitting elements including a plurality of semiconductor layers and an insulating film that surrounds parts of outer surfaces of the semiconductor layers, and a surfactant dispersed in the light-emitting element solvent, the surfactant including a fluorine-based and/or a silicon-based surfactant.Type: GrantFiled: April 27, 2021Date of Patent: March 19, 2024Assignee: Samsung Display Co., Ltd.Inventors: Jun Bo Sim, Duk Ki Kim, Yong Hwi Kim, Hyo Jin Ko, Chang Hee Lee, Chan Woo Joo, Jae Kook Ha, Na Mi Hong
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Patent number: 10166652Abstract: Provided are a device and method for polishing a substrate, in which an upper ground surface, a side surface and a lower ground surface of a substrate can be simultaneously polished, and a polishing wheel can be evenly used on the whole so as to be uniformly abraded. A substrate polishing system is to polish a substrate, of which upper edge and a lower edge are polished, and includes: a table, on which the substrate is secured; a spindle provided at the upper portion of a side surface of the table; a polishing wheel formed in the shape of a cylinder and having a rotating shaft mounted perpendicularly to the substrate, so as to polish the substrate with a side surface thereof while rotating by the spindle; and a Z axis movement means for moving the polishing wheel in the vertical direction during the polishing of the substrate.Type: GrantFiled: June 2, 2016Date of Patent: January 1, 2019Assignees: KNJ CO., LTD., SAMSUNG DISPLAY CO., LTD.Inventors: Gi-Hwan Bae, Jun-Woo Hong
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Patent number: 10013914Abstract: There is provided a pixel including an organic light emitting diode (OLED), a first transistor having a first electrode connected to a first power source and configured to control an amount of current supplied from the first power source to the OLED in response to a data signal, a second transistor and a third transistor connected between a second electrode and a gate electrode of the first transistor, and a fourth transistor connected between an initializing power source and a first node that is a common node of the second transistor and the third transistor.Type: GrantFiled: January 14, 2016Date of Patent: July 3, 2018Assignee: Samsung Display Co., Ltd.Inventors: Su Hyeong Park, Joon Chul Goh, Bong Hyun You, Jun Woo Hong
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Patent number: 9829922Abstract: A flexible display includes a flexible substrate, a metal material coupled to the flexible substrate, and at least one electromagnet coupled to the flexible substrate. The electromagnet generates a force to attract the metal material when the flexible substrate changes from a first state to a second state. The force assists in holding the flexible substrate in the second state, which may be a rolled state, folded state, or another changed state. The flexible substrate includes a display area corresponding to a plurality of pixels for generating an image.Type: GrantFiled: March 24, 2014Date of Patent: November 28, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jun Woo Hong, Hae Kwan Seo
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Patent number: 9788429Abstract: A display device includes a panel substrate, a first printed circuit board (PCB), a driver integrated circuit (IC), and a second PCB. The panel substrate includes a first substrate and a second substrate. The first PCB is disposed on the second substrate. The driver IC is disposed on the first substrate and is electrically connected to the first PCB. The second PCB is disposed on the first substrate and is electrically connected to the driver IC. The driver IC includes a first pad and a second pad. The first pad is disposed on an upper or lateral surface of the driver IC, the first pad being configured to transmit signals received via the first PCB. The second pad is disposed on a lower surface of the driver IC, the second pad being configured to receive the signals from the first PCB and to transmit the signals to the second PCB.Type: GrantFiled: June 11, 2015Date of Patent: October 10, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jun Woo Hong, Hae Kwan Seo
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Patent number: 9542877Abstract: An electroluminescent display and a method of driving the same are disclosed. In one aspect, the display includes a display panel including a plurality of pixels configured to operate based on a first power supply voltage having a negative voltage level. The display panel is configured to generate at least one feedback voltage corresponding to an ohmic drop of the first power supply voltage. An analog-to-digital converter is configured to generate at least one digital feedback signal based on the at least one feedback voltage. An adaptive voltage controller is configured to generate a voltage control signal based on input image data, the at least one digital feedback signal, a distribution of the input image data and the ohmic drop of the first power supply voltage. A voltage converter is configured to generate the first power supply voltage based on an input voltage and the voltage control signal.Type: GrantFiled: April 29, 2015Date of Patent: January 10, 2017Assignee: Samsung Display Co., Ltd.Inventors: Su-Hyeong Park, Ji-Myoung Seo, Hee-Soon Jeong, Soo-Wan Yoon, Ji-Woong Jeong, Jun-Woo Hong, Joon-Chul Goh
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Publication number: 20160354895Abstract: Provided are a device and method for polishing a substrate, in which an upper ground surface, a side surface and a lower ground surface of a substrate can be simultaneously polished, and a polishing wheel can be evenly used on the whole so as to be uniformly abraded. A substrate polishing system is to polish a substrate, of which upper edge and a lower edge are polished, and includes: a table, on which the substrate is secured; a spindle provided at the upper portion of a side surface of the table; a polishing wheel formed in the shape of a cylinder and having a rotating shaft mounted perpendicularly to the substrate, so as to polish the substrate with a side surface thereof while rotating by the spindle; and a Z axis movement means for moving the polishing wheel in the vertical direction during the polishing of the substrate.Type: ApplicationFiled: June 2, 2016Publication date: December 8, 2016Inventors: Gi-Hwan BAE, Jun-Woo HONG
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Publication number: 20160322446Abstract: There is provided a pixel including an organic light emitting diode (OLED), a first transistor having a first electrode connected to a first power source and configured to control an amount of current supplied from the first power source to the OLED in response to a data signal, a second transistor and a third transistor connected between a second electrode and a gate electrode of the first transistor, and a fourth transistor connected between an initializing power source and a first node that is a common node of the second transistor and the third transistor.Type: ApplicationFiled: January 14, 2016Publication date: November 3, 2016Inventors: Su Hyeong PARK, Joon Chul GOH, Bong Hyun YOU, Jun Woo HONG
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Patent number: 9405895Abstract: An authenticating system includes an authenticating device, a background display device, a sensing device, and an authentication pattern checking device. The authenticating device displays a first display pattern on a transparent display panel including a transmissivity pattern. The transmissivity pattern includes a plurality of regions with different transmissivities. The background display device displays a second display pattern on a display panel to overlap the transparent display panel. The sensing device generates a sensing pattern by sensing an authentication pattern generated based on the transmissivity pattern, the first display pattern, and the second display pattern. The authentication pattern checking device performs authentication by checking whether the sensing pattern is consistent with an authentication reference pattern.Type: GrantFiled: October 6, 2014Date of Patent: August 2, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Jun-Woo Hong
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Publication number: 20160216839Abstract: A display device includes: a processor configured to receive first image data for a display panel from an external system, determine a touch path based on a touch event generated by a touch sensor panel, and output second image data obtained by using the touch path to add overlay data to the first image data; and a control signal generating unit configured to generate a control signal for controlling an operation timing of a gate driver and a data driver, and operate in an interlace mode when the second image data is output to the display panel.Type: ApplicationFiled: September 22, 2015Publication date: July 28, 2016Inventors: Su Hyeong PARK, Ho Yong JUNG, Jun-Woo HONG, Joon-Chul GOH, Mun-San PARK, Ho Seok SON
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Publication number: 20160180763Abstract: An electroluminescent display and a method of driving the same are disclosed. In one aspect, the display includes a display panel including a plurality of pixels configured to operate based on a first power supply voltage having a negative voltage level. The display panel is configured to generate at least one feedback voltage corresponding to an ohmic drop of the first power supply voltage. An analog-to-digital converter is configured to generate at least one digital feedback signal based on the at least one feedback voltage. An adaptive voltage controller is configured to generate a voltage control signal based on input image data, the at least one digital feedback signal, a distribution of the input image data and the ohmic drop of the first power supply voltage. A voltage converter is configured to generate the first power supply voltage based on an input voltage and the voltage control signal.Type: ApplicationFiled: April 29, 2015Publication date: June 23, 2016Inventors: Su-Hyeong Park, Ji-Myoung Seo, Hee-Soon Jeong, Soo-Wan Yoon, Ji-Woong Jeong, Jun-Woo Hong, Joon-Chul Goh
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Publication number: 20160128194Abstract: A display device includes a panel substrate, a first printed circuit board (PCB), a driver integrated circuit (IC), and a second PCB. The panel substrate includes a first substrate and a second substrate. The first PCB is disposed on the second substrate. The driver IC is disposed on the first substrate and is electrically connected to the first PCB. The second PCB is disposed on the first substrate and is electrically connected to the driver IC. The driver IC includes a first pad and a second pad. The first pad is disposed on an upper or lateral surface of the driver IC, the first pad being configured to transmit signals received via the first PCB. The second pad is disposed on a lower surface of the driver IC, the second pad being configured to receive the signals from the first PCB and to transmit the signals to the second PCB.Type: ApplicationFiled: June 11, 2015Publication date: May 5, 2016Inventors: Jun Woo Hong, Hae Kwan Seo
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Publication number: 20150121513Abstract: An authenticating system includes an authenticating device, a background display device, a sensing device, and an authentication pattern checking device. The authenticating device displays a first display pattern on a transparent display panel including a transmissivity pattern. The transmissivity pattern includes a plurality of regions with different transmissivities. The background display device displays a second display pattern on a display panel to overlap the transparent display panel. The sensing device generates a sensing pattern by sensing an authentication pattern generated based on the transmissivity pattern, the first display pattern, and the second display pattern. The authentication pattern checking device performs authentication by checking whether the sensing pattern is consistent with an authentication reference pattern.Type: ApplicationFiled: October 6, 2014Publication date: April 30, 2015Inventor: Jun-Woo HONG
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Publication number: 20140321073Abstract: A flexible display includes a flexible substrate, a metal material coupled to the flexible substrate, and at least one electromagnet coupled to the flexible substrate. The electromagnet generates a force to attract the metal material when the flexible substrate changes from a first state to a second state. The force assists in holding the flexible substrate in the second state, which may be a rolled state, folded state, or another changed state. The flexible substrate includes a display area corresponding to a plurality of pixels for generating an image.Type: ApplicationFiled: March 24, 2014Publication date: October 30, 2014Inventors: Jun Woo HONG, Hae Kwan SEO
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Patent number: 8624800Abstract: A liquid crystal display (LCD) includes: a liquid crystal panel including a plurality of pixels; a data driver applying a data voltage to a plurality of data lines connected to the plurality of pixels; a scan driver applying a scan voltage to a plurality of scan lines connected to the plurality of pixels in synchronization with a scan clock signal controlling an output of the scan signal for the data voltage to be applied to the plurality of pixels; and a boost driver applying a primary boost voltage and a secondary boost voltage to a plurality of boost lines connected to the plurality of pixels in synchronization with a boost clock signal controlling the output of the boost voltage, wherein the boost clock signal has different synchronization from the scan clock signal controlling the output of the scan signal.Type: GrantFiled: February 16, 2011Date of Patent: January 7, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jin-Wook Yang, Jun-Woo Hong
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Publication number: 20120113089Abstract: A liquid crystal display (LCD) includes: a liquid crystal panel including a plurality of pixels; a data driver applying a data voltage to a plurality of data lines connected to the plurality of pixels; a scan driver applying a scan voltage to a plurality of scan lines connected to the plurality of pixels in synchronization with a scan clock signal controlling an output of the scan signal for the data voltage to be applied to the plurality of pixels; and a boost driver applying a primary boost voltage and a secondary boost voltage to a plurality of boost lines connected to the plurality of pixels in synchronization with a boost clock signal controlling the output of the boost voltage, wherein the boost clock signal has different synchronization from the scan clock signal controlling the output of the scan signal.Type: ApplicationFiled: February 16, 2011Publication date: May 10, 2012Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.Inventors: Jin-Wook Yang, Jun-Woo Hong