Patents by Inventor Bong Choon KIM
Bong Choon KIM 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: 20230273358Abstract: Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising a polarizer and a protective layer formed on at least one surface of the polarizer, wherein: the polarizing plate comprises a first area and a second area formed within an image display area; the first area and the second area have different single transmittances in the same wavelength; and the first area has a single transmittance of 45% to 85%, a maximum absorbance of 1.0 to 5.0 in a wavelength in a range from about 270 nm to about 325 nm, a maximum absorbance of 0.5 to 4.0 in a wavelength which exceeds about 325 nm and is lower than or equal to 420 nm, and a maximum absorbance of 0.5 or less in a wavelength in a range from about 500 nm to about 800 nm.Type: ApplicationFiled: August 3, 2021Publication date: August 31, 2023Inventors: Jung Hun YOU, Sang Hum LEE, Jun Mo KOO, Bong Choon KIM, Kwang Ho SHIN
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Patent number: 11681085Abstract: A polarizing plate and an optical display apparatus are provided. A polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has a short wavelength dispersion of about 1 to about 1.03, a long wavelength dispersion of about 0.98 to about 1, and an in-plane retardation of about 180 nm to about 220 nm at a wavelength of 550 nm, the second retardation layer has a short wavelength dispersion of about 1 to about 1.1, a long wavelength dispersion of about 0.96 to about 1, and an in-plane retardation Re of about 70 nm to about 120 nm at a wavelength of 550 nm, and a ratio of out-of-plane retardation of the second retardation layer at a wavelength of 550 nm to thickness thereof is about ?33 nm/?m to about ?15 nm/?m.Type: GrantFiled: July 28, 2020Date of Patent: June 20, 2023Assignee: Samsung SDI Co., Ltd.Inventors: Jun Mo Koo, Bong Choon Kim, Dong Yoon Shin, Jung Hun You, Sang Hum Lee
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Publication number: 20230124800Abstract: Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising a polarizer and a protective film formed on at least one surface of the polarizer, wherein the polarizer has a depolarization region on at least a part thereof, and the polarizer has a crystallization degree of formula 1 of about 60% or greater.Type: ApplicationFiled: March 5, 2021Publication date: April 20, 2023Inventors: Sang Hum LEE, Jung Hun YOU, Bong Choon KIM, Jun Mo KOO, Dong Yoon SHIN
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Publication number: 20230053212Abstract: Disclosed are an optical laminate and an optical display apparatus including the same. The optical laminate includes: a polarizer; and a retardation layer stacked on a light incidence surface of the polarizer, wherein the retardation layer includes a positive C layer, the positive C layer having an in-plane retardation of 0 nm to 30 nm and an out-of-plane retardation of ?50 nm to ?15 nm at a wavelength of 550 nm, and the in-plane retardation of the positive C layer at a wavelength of 550 nm and an absolute value of a tilted angle of a slow axis of the positive C layer with respect to a light absorption axis of the polarizer satisfy Relation 1.Type: ApplicationFiled: July 25, 2022Publication date: February 16, 2023Inventors: Seung Mi SHIN, Wan Taek HONG, Seong Hoon LEE, Seon Gyeong JEONG, Boem Deok LEE, Bong Choon KIM
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Publication number: 20230035051Abstract: Provided are a polarizing plate and an optical display device including same, the polarizing plate comprising a polarizer and a protection film formed on at least one surface of the polarizer, wherein the polarizer includes, in at least a part thereof, an area having high light transmittance, and the area having the high light transmittance has a depolarization index that is less than or equal to approximately 2% in a wavelength of approximately 550 nm.Type: ApplicationFiled: December 22, 2020Publication date: February 2, 2023Inventors: Bong Choon KIM, Jung Hun YOU, Jun Mo KOO, Dong Yoon SHIN, Sang Hum LEE
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Publication number: 20220413199Abstract: Provided are: a polarizing plate comprising a polarizer, and a protective layer formed on at least one surface of the polarizer, and an optical display device comprising same. The polarizing plate comprises a first area and second area which are in an image display area, wherein the first area and second area have mutually different light transmittances at the same wavelength, the first area has a light transmittance of approximately 50% to 80%, and the first area has a color value a* of approximately ?13 to 2, and a color value b* of approximately 1 to 35.Type: ApplicationFiled: February 10, 2021Publication date: December 29, 2022Inventors: Jun Mo KOO, Jung Hun YOU, Sang Hum LEE, Bong Choon KIM, Dong Yoon SHIN
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Publication number: 20220397715Abstract: A polarizing plate and an optical display apparatus including the same are provided. A polarizing plate includes: a polarizer; an antireflection film stacked on a first surface of the polarizer; and a retardation film stacked on a second surface of the polarizer, and the antireflection film has a water vapor transmission rate of 1 g/m2·day to 30 g/m2·day, and the retardation film has a water vapor transmission rate of 1 g/m2·day to 100 g/m2·day.Type: ApplicationFiled: June 7, 2022Publication date: December 15, 2022Inventors: Seon Oh HWANG, Yeon Ju JUNG, Seo Young KANG, Kwang Ho SHIN, Jong Kyu CHOI, Il Woong BAEK, Bong Choon KIM
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Publication number: 20220390650Abstract: A protective film for polarizers, a polarizing plate including the same, and an optical display apparatus including the same. The polyester-based film is a polyester protective film, has a thickness of about 10 ?m to about 50 ?m and a refractive index difference (nx?ny) of about 0.01 or more (nx and ny being indexes of refraction of the protective film at a wavelength of about 550 nm in the slow axis direction and the fast axis direction of the protective film, respectively), and is a biaxially stretched film. The slow axis direction of the protective film is coincident with a transverse direction (TD) thereof and an angle of about 70° to about 90° is defined between an external optical axis of the protective film and a normal direction with respect to an in-plane direction of the protective film.Type: ApplicationFiled: October 27, 2020Publication date: December 8, 2022Inventors: Bong Choon KIM, Jun Mo KOO, Jung Hun YOU, Sang Hum LEE, Dong Yoon SHIN
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Publication number: 20220390659Abstract: A polarizing plate and an optical display apparatus including the same are provided. The polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer. The first retardation layer has an in-plane retardation (Re) of 200 nm to 250 nm at a wavelength of 550 nm; the second retardation layer has an in-plane retardation (Re) of 80 nm to 140 nm at a wavelength of 550 nm; and the polarizing plate has a total transmittance difference of 2% or more between total transmittance at a wavelength of 450 nm and total transmittance at a wavelength of 420 nm.Type: ApplicationFiled: June 2, 2022Publication date: December 8, 2022Inventors: Jun Mo KOO, Jung Hun YOU, Sang Hum LEE, Bong Choon KIM, Yoon Jung KIM, Ri Ra JUNG, Kyu Sik KIM, Kwang Ho SHIN, Han Mam JEONG, Eun Su PARK
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Publication number: 20220299691Abstract: A polarizing plate and an optical display apparatus including the same. The polarizing plate includes: a polarizer; and a laminate of a first retardation layer and a second retardation layer, and a third retardation layer sequentially stacked on a lower surface of the polarizer, wherein the first retardation layer may have a slow axis tilted at an angle of +40° to +50° or at an angle of ?50° to ?40° with respect to an absorption axis or a transmission axis of the polarizer, the slow axis of the first retardation layer is tilted at an angle of +80° to +100° or at an angle of ?100° to ?80° with respect to a slow axis of the second retardation layer, the first retardation layer exhibits positive wavelength dispersion and has an in-plane retardation of 50 nm to 100 nm at a wavelength of 550 nm, and the second retardation layer has positive wavelength dispersion or flat wavelength dispersion and an in-plane retardation of 180 nm to 240 nm at a wavelength of 550 nm.Type: ApplicationFiled: August 13, 2020Publication date: September 22, 2022Inventors: Sang Hum LEE, Jun Mo KOO, Bong Choon KIM, Jung Hun YOU, Dong Yoon SHIN
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Publication number: 20220276424Abstract: Provided is a polarizing plate and an optical display device comprising same, the polarizing plate comprising: a polarizer; and a stack body of a first phase difference layer and a second phase difference layer stacked on a lower surface of the polarizer, wherein the first phase difference layer satisfies Equation 1, the second phase difference layer satisfies Equation 2, the sum of an in-plane phase difference at a wavelength of 550 nm between the first phase difference layer and the second phase difference layer is about 100 nm to about 110 nm, the sum of a thickness direction phase difference at a wavelength of 550 nm between the first phase difference layer and the second phase difference layer is about ?30 nm to about +10 nm, and the second phase difference layer comprises a fluorine-based phase difference layer.Type: ApplicationFiled: August 7, 2020Publication date: September 1, 2022Inventors: Jun Mo KOO, Bong Choon KIM, Dong Yoon SHIN, Jung Hun YOU, Sang Hum LEE
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Publication number: 20220252773Abstract: A polarizing plate and a display apparatus including the same. The polarizing plate includes: a polarizer and a protective film stacked at least on one surface of the polarizer, wherein the polarizing plate includes at least a depolarization region in an in-plane direction thereof, and the depolarization region has a maximum absorbance of 0.5 to 1.5 in the wavelength range of 380 nm to 420 nm and a light transmittance ratio (ratio of light transmittance at a wavelength of 590 nm to light transmittance at a wavelength of 400 nm) of 1 to 2.Type: ApplicationFiled: July 17, 2020Publication date: August 11, 2022Inventors: Jung Hun YOU, Bong Choon KIM, Sang Hum LEE, Jun Mo KOO, Dong Yoon SHIN
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Publication number: 20220187524Abstract: A polarizing plate and an optical display apparatus including the same. The polarizing plate includes: a polarizer; a first retardation layer; and a second retardation layer, the first retardation layer and the second retardation layer being sequentially laminated on a lower surface of the polarizer, wherein the first retardation layer has a short wavelength dispersion of about 1 to about 1.03, a long wavelength dispersion of about 0.98 to about 1, and an in-plane retardation of about 220 nm to about 270 nm at a wavelength of about 550 nm, the second retardation layer has a short wavelength dispersion of about 1 to about 1.1, a long wavelength dispersion of about 0.96 to about 1, and an in-plane retardation of about 80 nm to about 130 nm at a wavelength of about 550 nm, and a ratio (Rth/d) of out-of-plane retardation (Rth, unit: nm) of the second retardation layer at a wavelength of about 550 nm to thickness (d, unit: ?m) of the second retardation layer ranges from about ?33 nm/?m to about ?15 nm/?m.Type: ApplicationFiled: March 19, 2020Publication date: June 16, 2022Inventors: Jun Mo KOO, Bong Choon KIM, Jung Hun YOU, Sang Hum LEE, Dong Yoon SHIN
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Publication number: 20220075108Abstract: A polarizing plate and an optical display including the same are provided. A polarizing plate includes a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has a degree of biaxiality (NZ) of less than 0 at a wavelength of 550 nm and is a non-liquid crystal layer, and the second retardation layer has a degree of biaxiality (NZ) of greater than 1 at a wavelength of 550 nm.Type: ApplicationFiled: September 1, 2021Publication date: March 10, 2022Inventors: Jun Mo KOO, Bong Choon KIM, Sang Hum LEE, Jung Hun YOU, Hee Seop KIM, Kwang Ho SHIN
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Publication number: 20220026614Abstract: A polarizing plate and an optical display apparatus including the same are provided. A polarizing plate includes a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has an in-plane retardation of about 180 nm to about 220 nm at a wavelength of about 550 nm; and the second retardation layer has an in-plane retardation of about 80 nm to about 100 nm at a wavelength of about 550 nm.Type: ApplicationFiled: July 21, 2021Publication date: January 27, 2022Inventors: Bong Choon KIM, Jun Mo KOO, Dong Yoon SHIN, Jung Hun YOU, Sang Hum LEE
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Patent number: 10934404Abstract: The present disclosure is an acryl film formed from a main dope solution including an acryl resin shown in the following formula 1 and CSR particles, and peel strength measured in peeling speed of 0.5 mpm is 20 gf/2 inch or less, tear strength is 6 gf or more, has excellent peel strength, thereby visual stain by thickness unevenness is improved, and having excellent tear strength and good brittleness. a and b are an integer and 1 or more. MMA-BMA wherein, MMA is methyl methacrylate unit and BMA is butyl methacrylate unit.Type: GrantFiled: June 18, 2018Date of Patent: March 2, 2021Assignee: HYOSUNG CHEMICAL CORPORATIONInventors: Young Soo Kim, Kyung Soo Kim, Ho Jun Lee, Hyun Woo Choi, Hyeok Mo Kang, Hyun Suk Chung, Bong Choon Kim, Jong Hyuk Eun
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Publication number: 20210033768Abstract: A polarizing plate and an optical display apparatus are provided. A polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has a short wavelength dispersion of about 1 to about 1.03, a long wavelength dispersion of about 0.98 to about 1, and an in-plane retardation of about 180 nm to about 220 nm at a wavelength of 550 nm, the second retardation layer has a short wavelength dispersion of about 1 to about 1.1, a long wavelength dispersion of about 0.96 to about 1, and an in-plane retardation Re of about 70 nm to about 120 nm at a wavelength of 550 nm, and a ratio of out-of-plane retardation of the second retardation layer at a wavelength of 550 nm to thickness thereof is about ?33 nm/?m to about ?15 nm/?m.Type: ApplicationFiled: July 28, 2020Publication date: February 4, 2021Inventors: Jun Mo KOO, Bong Choon KIM, Dong Yoon SHIN, Jung Hun YOU, Sang Hum LEE
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Publication number: 20190292339Abstract: The present disclosure is an acryl film formed from a main dope solution including an acryl resin shown in the following formula 1 and CSR particles, and peel strength measured in peeling speed of 0.5 mpm is 20 gf/2 inch or less, tear strength is 6 gf or more, has excellent peel strength, thereby visual stain by thickness unevenness is improved, and having excellent tear strength and good brittleness. a and b are an integer and 1 or more. MMA-BMA wherein, MMA is methyl methacrylate unit and BMA is butyl methacrylate unit.Type: ApplicationFiled: June 18, 2018Publication date: September 26, 2019Inventors: Young Soo KIM, Kyung Soo KIM, Ho Jun LEE, Hyun Woo CHOI, Hyeok Mo KANG, Hyun Suk CHUNG, Bong Choon KIM, Jong Hyuk EUN