Patents by Inventor Tae-woon Cha
Tae-woon Cha 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: 10162092Abstract: A display panel includes an array substrate, an opposite substrate facing the array substrate, and a liquid crystal layer between the substrates. The array substrate includes a first polarizer, a first insulating layer covering the first metal layer, a gate electrode on the first insulating layer, a gate insulation layer on the gate electrode, a channel layer on the gate insulation layer, source and drain electrodes on the channel layer, a protecting layer covering the source and drain electrodes and including a contact hole exposing the drain electrode, and a first electrode on the protecting layer and electrically connected to the drain electrode through the contact hole. The first polarizer includes a first substrate, a first antistatic layer on the first substrate and including a conductive material, and a first metal layer on the first antistatic layer and including a plurality of protrusions which form a wire grid pattern.Type: GrantFiled: November 4, 2015Date of Patent: December 25, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang-Gun Choi, Woo-Yong Sung, Tae-Woon Cha
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Patent number: 9568728Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.Type: GrantFiled: August 11, 2016Date of Patent: February 14, 2017Assignee: Samsung Display Co., Ltd.Inventors: Dong-Hwan Kim, Sung-Ku Baek, Gil-Hwan Yeo, Tae-Woon Cha, Gyung-Mo Tahk
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Publication number: 20160349499Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.Type: ApplicationFiled: August 11, 2016Publication date: December 1, 2016Inventors: Dong-Hwan KIM, Sung-Ku BAEK, Gil-Hwan YEO, Tae-Woon CHA, Gyung-Mo TAHK
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Patent number: 9442284Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.Type: GrantFiled: October 19, 2012Date of Patent: September 13, 2016Assignee: Samsung Display Co., Ltd.Inventors: Dong-Hwan Kim, Sung-Ku Baek, Gil-Hwan Yeo, Tae-Woon Cha, Gyung-Mo Tahk
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Patent number: 9356050Abstract: A display apparatus includes a substrate; a cavity layer; a display material layer; and a capping layer. The cavity layer includes a plurality of barriers arranged to be spaced apart from one another on the substrate and partitioning pixel regions, and a roof layer connecting upper parts of the plurality of barriers. The cavity layer forms a plurality of cavities including a cavity. The display material layer is formed in the cavity. The capping layer is formed on the cavity layer, the capping layer including a sealant and a plurality of fillers dispersed in the sealant.Type: GrantFiled: June 18, 2014Date of Patent: May 31, 2016Assignee: Samsung Display Co., Ltd.Inventors: Tae-Woon Cha, Woo-Yong Sung, Tae-Gyun Kim, Hyoung-Sub Lee
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Publication number: 20160077265Abstract: A display panel includes an array substrate, an opposite substrate facing the array substrate, and a liquid crystal layer between the substrates. The array substrate includes a first polarizer, a first insulating layer covering the first metal layer, a gate electrode on the first insulating layer, a gate insulation layer on the gate electrode, a channel layer on the gate insulation layer, source and drain electrodes on the channel layer, a protecting layer covering the source and drain electrodes and including a contact hole exposing the drain electrode, and a first electrode on the protecting layer and electrically connected to the drain electrode through the contact hole. The first polarizer includes a first substrate, a first antistatic layer on the first substrate and including a conductive material, and a first metal layer on the first antistatic layer and including a plurality of protrusions which form a wire grid pattern.Type: ApplicationFiled: November 4, 2015Publication date: March 17, 2016Inventors: Sang-Gun CHOI, Woo-Yong SUNG, Tae-Woon CHA
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Patent number: 9279976Abstract: An electrowetting display apparatus includes a first base substrate, a second base substrate which faces the first base substrate, a first electrode on the first base substrate, and a second electrode on the second base substrate, where the second electrode faces the first electrode. A barrier wall is on the first electrode, where the barrier wall defines a storage area. A surface of the first electrode and the barrier wall is overlapped by a barrier layer. In addition, a water-repellent layer is on the barrier layer which is in the storage area. First and second fluids are in the storage area, the first fluid is separate from the second fluid, and the first fluid or the second fluid has a polarity.Type: GrantFiled: October 6, 2014Date of Patent: March 8, 2016Assignee: Amazon Technologies, Inc.Inventors: Dong-Hwan Kim, Sang-Il Kim, Tae-Woon Cha, Myung-Hwan Kim, Woo Yong Sung, Jeongho Lee, Hyoung-Wook Lee, Hyeon Gu Cho
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Patent number: 9231222Abstract: A thin film transistor (“TFT”) includes a gate electrode, a gate insulating layer, a source electrode, a drain electrode and a semiconductor layer. The gate insulating layer is disposed on the gate electrode. The source electrode is disposed on the gate insulating layer. The drain electrode is disposed on the gate insulating layer. The drain electrode is spaced apart from the source electrode. The semiconductor layer is disposed on the gate insulating layer. The semiconductor layer makes contact with a side surface of the source electrode and a side surface of the drain electrode.Type: GrantFiled: August 14, 2012Date of Patent: January 5, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Woo-Yong Sung, Dong-Hwan Kim, Jeong-Ho Lee, Tae-Woon Cha, Sang-Gun Choi
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Patent number: 9223171Abstract: A display panel includes an array substrate, an opposite substrate facing the array substrate, and a liquid crystal layer between the substrates. The array substrate includes a first polarizer, a first insulating layer covering the first metal layer, a gate electrode on the first insulating layer, a gate insulation layer on the gate electrode, a channel layer on the gate insulation layer, source and drain electrodes on the channel layer, a protecting layer covering the source and drain electrodes and including a contact hole exposing the drain electrode, and a first electrode on the protecting layer and electrically connected to the drain electrode through the contact hole. The first polarizer includes a first substrate, a first antistatic layer on the first substrate and including a conductive material, and a first metal layer on the first antistatic layer and including a plurality of protrusions which form a wire grid pattern.Type: GrantFiled: January 4, 2013Date of Patent: December 29, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang-Gun Choi, Woo-Yong Sung, Tae-Woon Cha
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Patent number: 9202824Abstract: A display panel includes a substrate, a gate line, a color filter and a roof layer. The substrate includes a thin film transistor disposed thereon. The gate line extends along a first direction on the substrate and is connected to the thin film transistor. The color filter is disposed on the substrate. The roof layer is disposed on the color filter and is configured to define a tunnel-shaped cavity between the roof layer and the color filter. The tunnel-shaped cavity extends along a second direction crossing the first direction. A cross-sectional thickness of an area of the roof layer adjacent to the gate lines is smaller than a cross-sectional thickness of another area of the roof layer spaced apart from the gate lines.Type: GrantFiled: July 17, 2014Date of Patent: December 1, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Han-Su Kim, Ha-Young Park, Seung-Yeon Chae, Sang-Gun Choi, Se-Hee Han, Tae-Woon Cha
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Patent number: 9151946Abstract: A method of manufacturing an electrowetting display device includes a preliminary partition wall pattern formed on a lower substrate on which a pixel electrode of an oxide series and an insulation layer are formed. The preliminary partition wall pattern is disposed along a boundary of the pixel electrode. A water-repellent layer including a self-assembled monolayer having a hydrophobic property is formed on the lower substrate. A portion of the preliminary partition wall pattern and the water-repellent layer formed on the preliminary partition wall pattern are removed to form a partition wall pattern on the insulation layer and to form a water-repellent pattern on the pixel electrode and the insulation layer between partition walls of the partition wall patterns. A fluid layer is formed on the lower substrate on which the water-repellent pattern is formed. The lower substrate and an upper substrate are combined with each other.Type: GrantFiled: November 23, 2012Date of Patent: October 6, 2015Assignee: Amazon Technologies, Inc.Inventors: Woo-Yong Sung, A-Ram Lee, Tae-Gyun Kim, Tae-Woon Cha, Sang-Gun Choi
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Patent number: 9139001Abstract: An inkjet print head includes a jet assembly, a printed-circuit board and a barrier coating film. The jet assembly includes a nozzle plate including a jet orifice in a lower surface of the nozzle plate and through which ink is discharged, and an ink transfer pathway inside nozzle plate. The printed-circuit board is combined with the jet assembly. The printed-circuit board includes an integrated circuit and a connection electrode. The barrier coating film includes organic material, a flexible layer and a hydrophobic layer. The barrier coating film covers an inner and an outer surface of the jet assembly, and an outer surface of the printed-circuit board. The barrier coating film exposes the lower surface of the nozzle plate and an outer surface of the connection electrode.Type: GrantFiled: November 17, 2012Date of Patent: September 22, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Woo-Yong Sung, A-Ram Lee, Tae-Gyun Kim, Tae-Woon Cha, Sang-Gun Choi
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Publication number: 20150236041Abstract: A display panel includes a substrate, a gate line, a color filter and a roof layer. The substrate includes a thin film transistor disposed thereon. The gate line extends along a first direction on the substrate and is connected to the thin film transistor. The color filter is disposed on the substrate. The roof layer is disposed on the color filter and is configured to define a tunnel-shaped cavity between the roof layer and the color filter. The tunnel-shaped cavity extends along a second direction crossing the first direction. A cross-sectional thickness of an area of the roof layer adjacent to the gate lines is smaller than a cross-sectional thickness of another area of the roof layer spaced apart from the gate lines.Type: ApplicationFiled: July 17, 2014Publication date: August 20, 2015Inventors: Han-Su KIM, Ha-Young PARK, Seung-Yeon CHAE, Sang-Gun CHOI, Se-Hee HAN, Tae-Woon CHA
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Publication number: 20150192806Abstract: A display apparatus includes a substrate; a cavity layer; a display material layer; and a capping layer. The cavity layer includes a plurality of barriers arranged to be spaced apart from one another on the substrate and partitioning pixel regions, and a roof layer connecting upper parts of the plurality of barriers. The cavity layer forms a plurality of cavities including a cavity. The display material layer is formed in the cavity. The capping layer is formed on the cavity layer, the capping layer including a sealant and a plurality of fillers dispersed in the sealant.Type: ApplicationFiled: June 18, 2014Publication date: July 9, 2015Inventors: Tae-Woon CHA, Woo-Yong SUNG, Tae-Gyun KIM, Hyoung-Sub LEE
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Patent number: 9034420Abstract: A method of manufacturing a touch screen substrate includes forming a sensing electrode on a substrate, spraying a first ink and a second ink on the substrate including the sensing electrode, where the first ink includes a first solvent and insulation balls having a first diameter and the second ink includes a second solvent and conductive balls having a second diameter smaller than the first diameter, and hardening the first and second inks on the substrate, to fix the insulation balls on the substrate and the conductive balls on the sensing electrode formed on the substrate.Type: GrantFiled: September 25, 2013Date of Patent: May 19, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Woo-Yong Sung, Tae-Woon Cha, Tae-Gyun Kim
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Patent number: 9030620Abstract: A display panel includes a substrate including a plurality of thin-film transistors thereon, a plurality of gate lines respectively connected to a thin film transistor and disposed on the substrate, a color filter layer disposed on the substrate and the gate lines, a black matrix disposed on the color filter and overlapped with the gate lines, and a hole defined in the black matrix and exposing the color filter layer, a first electrode disposed on the color filter and electrically connected to the thin-film transistor and an image displaying layer disposed on the first electrode.Type: GrantFiled: October 18, 2013Date of Patent: May 12, 2015Assignee: Samsung Display Co., Ltd.Inventors: Seung-Yeon Chae, Sang-Gun Choi, A-Ram Lee, Tae-Woon Cha
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Publication number: 20150092131Abstract: A liquid crystal display includes a substrate, a thin film transistor disposed on the substrate, a pixel electrode disposed on the thin film transistor, a roof layer facing the pixel electrode, and at least one partition wall disposed along an edge of the substrate, in which a plurality of microcavities is formed between the pixel electrode and the roof layer, and the plurality of microcavities includes a liquid crystal material.Type: ApplicationFiled: April 10, 2014Publication date: April 2, 2015Applicant: Samsung Display Co., Ltd.Inventors: A Ram Lee, Seung-Yeon Chae, Sang Gun Choi, Ha-Young Park, Tae-Woon Cha, Se Hee Han
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Patent number: 8960857Abstract: An inkjet print head includes a main body including carbon allotrope, and an ink storage configured to store an ink and including a space defined in the main body. A protecting layer is on an inner surface of the main body, and includes parylene. An inorganic layer is on the protecting layer. An organic layer is on the inorganic layer.Type: GrantFiled: May 9, 2014Date of Patent: February 24, 2015Assignee: Samsung Display Co., Ltd.Inventors: Woo-Yong Sung, A-Ram Lee, Tae-Gyun Kim, Tae-Woon Cha
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Publication number: 20150022875Abstract: An electrowetting display apparatus includes a first base substrate, a second base substrate which faces the first base substrate, a first electrode on the first base substrate, and a second electrode on the second base substrate, where the second electrode faces the first electrode. A barrier wall is on the first electrode, where the barrier wall defines a storage area. A surface of the first electrode and the barrier wall is overlapped by a barrier layer. In addition, a water-repellent layer is on the barrier layer which is in the storage area. First and second fluids are in the storage area, the first fluid is separate from the second fluid, and the first fluid or the second fluid has a polarity.Type: ApplicationFiled: October 6, 2014Publication date: January 22, 2015Inventors: Dong-Hwan Kim, Sang-Il Kim, Tae-Woon Cha, Myung-Hwan Kim, Woo Yong Sung, Jeongho Lee, Hyoung-Wook Lee, Hyeon Gu Cho
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Publication number: 20140368770Abstract: A display panel includes a substrate including a plurality of thin-film transistors thereon, a plurality of gate lines respectively connected to a thin film transistor and disposed on the substrate, a color filter layer disposed on the substrate and the gate lines, a black matrix disposed on the color filter and overlapped with the gate lines, and a hole defined in the black matrix and exposing the color filter layer, a first electrode disposed on the color filter and electrically connected to the thin-film transistor and an image displaying layer disposed on the first electrode.Type: ApplicationFiled: October 18, 2013Publication date: December 18, 2014Applicant: Samsung Display Co., Ltd.Inventors: Seung-Yeon CHAE, Sang-Gun CHOI, A-Ram LEE, Tae-Woon CHA