Patents by Inventor Jun-sung Choi
Jun-sung Choi 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: 11967529Abstract: Methods of manufacturing a semiconductor chip are provided. The methods may include providing a semiconductor substrate including integrated circuit regions and a cut region. The cut region may be between the integrated circuit regions. The methods may also include forming a modified layer by emitting a laser beam into the semiconductor substrate along the cut region, polishing an inactive surface of the semiconductor substrate to propagate a crack from the modified layer, and separating the integrated circuit regions along the crack. The cut region may include a plurality of multilayer metal patterns on an active surface of the semiconductor substrate, which is opposite to the inactive surface of the semiconductor substrate. The plurality of multilayer metal patterns may form a pyramid structure when viewed in cross section.Type: GrantFiled: November 10, 2020Date of Patent: April 23, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Byung-moon Bae, Yoon-sung Kim, Yun-hee Kim, Hyun-su Sim, Jun-ho Yoon, Jung-ho Choi
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Publication number: 20240112940Abstract: The present invention relates to an electrostatic chuck heater having a bipolar structure, the electrostatic chuck heater comprising: a heater body having an internal electrode and an external electrode for selectively performing any one of an RF grounding function and an electrostatic chuck function according to a semiconductor process mode; and a heater support mounted below the heater body so as to support the heater body.Type: ApplicationFiled: December 13, 2023Publication date: April 4, 2024Inventors: Jin Young CHOI, Jun Won SEO, Ju Sung LEE
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Publication number: 20240103438Abstract: A method and a system thereof for producing a digital holographic screen based on multi-hogel printing are proposed. The system includes a light source unit including lasers, a dichroic mirror for RGB three color matching, mirrors, a beam splitter, and an optical shutter, an object beam unit including a spatial filter, a lens, and a mirror, a reference beam unit including a spatial filter, a lens, and a mirror, a diffuser fixing unit including a diffuser holder and a diffuser positioned between the object beam unit and a recording material and configured to scatter and diffuse the object beam, a photomask movement unit including a photomask holder, an XY-translation stage, and a photomask positioned between the reference beam unit and the recording medium and on which a grid-shaped on/off binary pattern is printed, and a controller configured to control the optical shutter and the XY-translation stage.Type: ApplicationFiled: November 11, 2021Publication date: March 28, 2024Inventors: Dong Hak SHIN, Yong Seok OH, Jae Hong KIM, Jong sung JUNG, Jae Woo PARK, Jun Yong CHOI
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Publication number: 20240087501Abstract: Disclosed is a display device including a display panel having a plurality of pixels, the display panel comprising a first display area having first resolution and a second display area having second resolution, the second resolution being lower than the first resolution, and a controller configured to generate display area information of each of the plurality of pixels, to blur an image that is displayed in the second display area based on the display area information, and to perform control such that the blurred image is displayed on the display panel.Type: ApplicationFiled: November 15, 2023Publication date: March 14, 2024Applicant: SILICON WORKS CO., LTD.Inventors: Dae Hee BAE, Bo Sung KIM, Jun Hun PARK, Ji Hong YUK, Sung Woo HAN, Ji Hoon CHOI
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Patent number: 11243342Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit configured to emit light, a display panel positioned in front of the backlight unit; and an optical film positioned in front of the display panel, and the optical film includes a base layer, a first refractive layer positioned in front of the base layer, a second refractive layer positioned in front of the first refractive layer and having a lower refractive index than the first refractive layer, a third refractive layer positioned at the rear of the base layer, and a fourth refractive layer positioned at the rear of the third refractive layer and having a lower refractive index than the third refractive layer.Type: GrantFiled: October 2, 2019Date of Patent: February 8, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung Jun Jeong, Sei Young Kang, Min Woo Kang, Nam Seok Roh, Kwan Sik Min, Jun Sung Choi
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Patent number: 11187934Abstract: The present disclosure relates to a display apparatus including a liquid crystal panel, first and second polarizing plates coupled to the front and rear of the liquid crystal panel, respectively, and a light absorbing layer on which light passed sequentially through the first polarizing plate, the liquid crystal panel is incident, wherein the light absorbing layer is disposed on a front surface of the second polarizing plate positioned in the front of the liquid crystal panel. The light absorbing layer includes a first resin layer, a second resin layer on which light passed through the first resin layer is incident, the second resin layer having a refractive index higher than that of the first resin layer, and light absorbing portions disposed on the first resin layer and configured to absorb a part of light passing through the light absorbing layer. Through this configuration, a viewing angle of the display apparatus is improved.Type: GrantFiled: October 18, 2018Date of Patent: November 30, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ii Yong Jung, Wook-Jae Jeon, Young Chul Lee, Jun Sung Choi
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Patent number: 10942391Abstract: There is provided a display apparatus with an improved viewing angle. The display apparatus includes a display panel configured to receive light from a light source module, wherein the display panel includes: a liquid crystal panel; a first polarizing plate positioned on a rear side of the liquid crystal panel and a second polarizing plate positioned on a front side of the liquid crystal panel; and an optical layer positioned on a front surface of the second polarizing plate, wherein the optical layer includes: a resin layer having a first refractive index, and including an accommodating groove in which a light adjusting portion is disposed, the resin layer further including a light refractive pattern protruding toward a rear direction of the display panel; and an adhesive layer having a second refractive index different from the first refractive index, and bonding the resin layer with the second polarizing plate.Type: GrantFiled: October 22, 2019Date of Patent: March 9, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Hyung Jin Lee, Wook Jae Jeon, Young Chol Lee, Ju Hyun Lee, Tae Young Lee, Seung Hun Chae, Jun Sung Choi
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Patent number: 10818209Abstract: A display apparatus includes a display panel receiving light from a light source. The display panel includes a liquid crystal panel, first and second polarizers respectively disposed on front and rear sides of the liquid crystal panel, and an optical layer disposed on a front surface of the second polarizer. The optical layer includes a first resin layer having light absorption portions for absorbing a portion of incident light, a second resin layer disposed on a front surface of the first resin layer, the second resin layer having a higher refractive index than the first resin layer, the second resin layer having light diffusion portions for diffusing light not absorbed by the light absorption portions.Type: GrantFiled: October 9, 2018Date of Patent: October 27, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young Chol Lee, Wook-Jae Jeon, Tae Ik Kim, Il Yong Jung, Byoung-Jin Cho, Jun Sung Choi
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Publication number: 20200249522Abstract: The present disclosure relates to a display apparatus including a liquid crystal panel, first and second polarizing plates coupled to the front and rear of the liquid crystal panel, respectively, and a light absorbing layer on which light passed sequentially through the first polarizing plate, the liquid crystal panel is incident, wherein the light absorbing layer is disposed on a front surface of the second polarizing plate positioned in the front of the liquid crystal panel. The light absorbing layer includes a first resin layer, a second resin layer on which light passed through the first resin layer is incident, the second resin layer having a refractive index higher than that of the first resin layer, and light absorbing portions disposed on the first resin layer and configured to absorb a part of light passing through the light absorbing layer. Through this configuration, a viewing angle of the display apparatus is improved.Type: ApplicationFiled: October 18, 2019Publication date: August 6, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Il Young JUNG, Wook-Jae JEON, Young Chul LEE, Jun Sung CHOI
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Publication number: 20200133062Abstract: There is provided a display apparatus with an improved viewing angle. The display apparatus includes a display panel configured to receive light from a light source module, wherein the display panel includes: a liquid crystal panel; a first polarizing plate positioned on a rear side of the liquid crystal panel and a second polarizing plate positioned on a front side of the liquid crystal panel; and an optical layer positioned on a front surface of the second polarizing plate, wherein the optical layer includes: a resin layer having a first refractive index, and including an accommodating groove in which a light adjusting portion is disposed, the resin layer further including a light refractive pattern protruding toward a rear direction of the display panel; and an adhesive layer having a second refractive index different from the first refractive index, and bonding the resin layer with the second polarizing plate.Type: ApplicationFiled: October 22, 2019Publication date: April 30, 2020Inventors: Hyung Jin LEE, Wook Jae JEON, Young Chol LEE, Ju Hyun LEE, Tae Young LEE, Seung Hun CHAE, Jun Sung CHOI
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Publication number: 20200117048Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit configured to emit light, a display panel positioned in front of the backlight unit; and an optical film positioned in front of the display panel, and the optical film includes a base layer, a first refractive layer positioned in front of the base layer, a second refractive layer positioned in front of the first refractive layer and having a lower refractive index than the first refractive layer, a third refractive layer positioned at the rear of the base layer, and a fourth refractive layer positioned at the rear of the third refractive layer and having a lower refractive index than the third refractive layer.Type: ApplicationFiled: October 2, 2019Publication date: April 16, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung Jun JEONG, Sei Young Kang, Min Woo Kang, Nam Seok Roh, Kwan Sik Min, Jun Sung Choi
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Patent number: 10436961Abstract: A polarization film and a display apparatus are provided. The polarization film includes first polarization layers and second polarization layers. The first polarization layers have a first refractive index with respect to a first polarization; and the second polarization layers have a second refractive index with respect to the first polarization and are arranged in each interval between the first polarization layers. The first polarization layers reflect light of the first polarization having color coordinates based on a thickness of the first polarization layers, at a boundary that touches the second polarization layers. The display apparatus includes a display panel and the polarization film.Type: GrantFiled: October 2, 2015Date of Patent: October 8, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun Sung Choi, Won Yong Lee, Ju Seong Hwang
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Patent number: 10393939Abstract: A display apparatus includes: a display panel; a light source package configured to supply light; and a light guide plate configured to receive the light supplied by the light source package and guide the light to the display panel. The light source package includes: a light source configured to generate the light; a first reflector disposed around the light source; a light converter disposed between the light source and the light guide plate, the light converter being configured to convert properties of the light directed toward the light guide plate; and a second reflector protruding from the light converter toward the light source, the second reflector being configured to reflect the light generated by the light source toward the first reflector, and to reflect light reflected by the light converter toward the light guide plate.Type: GrantFiled: September 21, 2017Date of Patent: August 27, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Wook-Jae Jeon, Young Chol Lee, Nae-Won Jang, Seung Hun Chae, Jun Sung Choi
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Publication number: 20190122597Abstract: A display apparatus includes a display panel receiving light from a light source. The display panel includes a liquid crystal panel, first and second polarizers respectively disposed on front and rear sides of the liquid crystal panel, and an optical layer disposed on a front surface of the second polarizer. The optical layer includes a first resin layer having light absorption portions for absorbing a portion of incident light, a second resin layer disposed on a front surface of the first resin layer, the second resin layer having a higher refractive index than the first resin layer, the second resin layer having light diffusion portions for diffusing light not absorbed by the light absorption portions.Type: ApplicationFiled: October 9, 2018Publication date: April 25, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young Chol LEE, Wook-Jae JEON, Tae Ik KIM, Il Yong JUNG, Byoung-Jin CHO, Jun Sung CHOI
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Patent number: 10120257Abstract: Disclosed herein is an electrochromic device including an active layer in which a catalyst facilitating oxidation-reduction reaction is homogeneously dispersed. The electrochromic device includes at least one active layer to reversibly exhibit a transparent state upon hydrogenation and a reflective state upon dehydrogenation, wherein the active layer includes a catalyst to facilitate a rate of reversible conversion between the transparent state and the reflective state.Type: GrantFiled: January 6, 2015Date of Patent: November 6, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Cho-Young Lee, Hye Jin Kim, Jun Sung Choi
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Publication number: 20180156959Abstract: A display apparatus includes: a display panel; a light source package configured to supply light; and a light guide plate configured to receive the light supplied by the light source package and guide the light to the display panel. The light source package includes: a light source configured to generate the light; a first reflector disposed around the light source; a light converter disposed between the light source and the light guide plate, the light converter being configured to convert properties of the light directed toward the light guide plate; and a second reflector protruding from the light converter toward the light source, the second reflector being configured to reflect the light generated by the light source toward the first reflector, and to reflect light reflected by the light converter toward the light guide plate.Type: ApplicationFiled: September 21, 2017Publication date: June 7, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Wook-Jae JEON, Young Chol LEE, Nae-Won JANG, Seung Hun CHAE, Jun Sung CHOI
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Publication number: 20160306087Abstract: A display apparatus including a polarizing member attached to a rear surface of a transparent panel in front of a display panel. Accordingly, external light incident thereon is reflected by the polarizing member, thereby improving the aesthetic quality of the display apparatus.Type: ApplicationFiled: April 20, 2016Publication date: October 20, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Wook-Jae JEON, Eun IL CHO, Go Hyun KIM, Jun Sung CHOI
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Publication number: 20160124132Abstract: A polarization film and a display apparatus are provided. The polarization film includes first polarization layers and second polarization layers. The first polarization layers have a first refractive index with respect to a first polarization; and the second polarization layers have a second refractive index with respect to the first polarization and are arranged in each interval between the first polarization layers. The first polarization layers reflect light of the first polarization having color coordinates based on a thickness of the first polarization layers, at a boundary that touches the second polarization layers. The display apparatus includes a display panel and the polarization film.Type: ApplicationFiled: October 2, 2015Publication date: May 5, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun Sung CHOI, Won Yong LEE, Ju Seong HWANG
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Publication number: 20150198856Abstract: Disclosed herein is an electrochromic device including an active layer in which a catalyst facilitating oxidation-reduction reaction is homogeneously dispersed. The electrochromic device includes at least one active layer to reversibly exhibit a transparent state upon hydrogenation and a reflective state upon dehydrogenation, wherein the active layer includes a catalyst to facilitate a rate of reversible conversion between the transparent state and the reflective state.Type: ApplicationFiled: January 6, 2015Publication date: July 16, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Cho-Young LEE, Hye Jin KIM, Jun Sung CHOI
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Publication number: 20140002637Abstract: An apparatus for easily measuring the quality of gallium nitride (GaN) in normal conditions such as an atmospheric pressure and room temperature. The apparatus includes a light source disposed above a GaN substrate and a measuring unit disposed above the GaN substrate. The light source emits light to a surface of the GaN substrate. The measuring unit measures the quality of the GaN substrate based on the spectrum of light radiated from the GaN substrate.Type: ApplicationFiled: June 26, 2013Publication date: January 2, 2014Inventors: Junyoung Bae, Jun Sung Choi, Joon Hoi Kim, Boik Park, Cheol Min Park, DongYong Lee, WonJo Lee, SungKeun Lim