Patents by Inventor Hwal Choi
Hwal 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: 10008695Abstract: A flexible display device includes a display module and a window member disposed on the display module. The window member includes a base film, elastomer patterns disposed on one surface of the base film, and a hard coating layer disposed on the one surface of the base film to cover the elastomer patterns.Type: GrantFiled: August 5, 2016Date of Patent: June 26, 2018Assignee: Samsung Display Co., Ltd.Inventors: Youngsang Park, Inseo Kee, Jungho Park, Kyu-taek Lee, Chulho Jeong, Hwal Choi
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Publication number: 20130128170Abstract: A liquid crystal display device is disclosed which, according to one aspect, includes first and second substrates facing each other and a liquid crystal layer interposed between the first and second substrates. The first substrate includes a plurality of first pixels arranged in a first pixel column and a plurality of second pixels arranged in a second pixel column. The first pixels and the second pixels are connected to different ones of a plurality of gate lines and connected to any one of a plurality of data lines.Type: ApplicationFiled: March 8, 2012Publication date: May 23, 2013Applicant: Samsung Mobile Display Co., Ltd.Inventors: Myong Ho Kwon, Chang-Jin Lee, Chang-Gil Lee, Tae-Sik Kim, Hwal Choi
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Patent number: 8325290Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof; a light source disposed adjacent to the first light guide block; a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel; a dual brightness enhancement film provided in a region corresponding to the opening of the housing.Type: GrantFiled: March 26, 2009Date of Patent: December 4, 2012Assignee: Samsung Display Co., Ltd.Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Mun-Cheol Lee, Won-Ki Cho, Hwal Choi
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Patent number: 7920228Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof and dot pattern formed on a second surface thereof; a light source disposed adjacent to the first light guide block; and a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel.Type: GrantFiled: April 1, 2009Date of Patent: April 5, 2011Assignee: Samsung Mobile Display Co., Ltd.Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, Hwal Choi, David Lee
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Patent number: 7916243Abstract: A dual liquid crystal display (LCD) device including a first LCD panel displaying an image on a first surface; a second LCD panel formed on the same substrate to display an image on a second surface; a light source disposed at an adjacent side under the first LCD panel; a light guide disposed under the first and second LCD panels and including a first light guide block corresponding to the first LCD panel and having dot patterns formed in a first surface and a second light guide block corresponding to the second LCD panel and having taper-cascade grooves formed on a first surface; and a housing settling the first and second LCD panels, the light source and the light guide and having an opening to correspond to an image display surface of the second LCD panel.Type: GrantFiled: April 9, 2009Date of Patent: March 29, 2011Assignee: Samsung Mobile Display Co., Ltd.Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, David Lee, Hwal Choi
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Patent number: 7907235Abstract: A dual Liquid Crystal Display (LCD), having a transmissive first panel and a reflective second panel, includes: a first LCD panel and a second LCD panel arranged on the same substrate, the first LCD panel displaying an image on a first surface thereof and the second LCD panel displaying an image on a second surface thereof; a backlight unit arranged on a bottom of the first LCD panel; and a housing, anchoring the first and second LCD panels and the backlight unit, and having an opening corresponding to an image-displaying surface of the second LCD panel.Type: GrantFiled: August 14, 2008Date of Patent: March 15, 2011Assignee: Samsung Mobile Display Co., Ltd.Inventors: Kyu-Han Bae, Shawn Kim, Do-Young Kim, David Lee, Won-Ki Cho, Hwal Choi
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Publication number: 20090316075Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof and dot pattern formed on a second surface thereof; a light source disposed adjacent to the first light guide block; and a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel.Type: ApplicationFiled: April 1, 2009Publication date: December 24, 2009Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, Hwal Choi, David Lee
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Publication number: 20090316071Abstract: A dual liquid crystal display (LCD) device including a first LCD panel displaying an image on a first surface; a second LCD panel formed on the same substrate to display an image on a second surface; a light source disposed at an adjacent side under the first LCD panel; a light guide disposed under the first and second LCD panels and including a first light guide block corresponding to the first LCD panel and having dot patterns formed in a first surface and a second light guide block corresponding to the second LCD panel and having taper-cascade grooves formed on a first surface; and a housing settling the first and second LCD panels, the light source and the light guide and having an opening to correspond to an image display surface of the second LCD panel.Type: ApplicationFiled: April 9, 2009Publication date: December 24, 2009Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, David Lee, Hwal Choi
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Publication number: 20090316082Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof; a light source disposed adjacent to the first light guide block; a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel; a dual brightness enhancement film provided in a region corresponding to the opening of the housing.Type: ApplicationFiled: March 26, 2009Publication date: December 24, 2009Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Mun-Cheol Lee, Won-Ki Cho, Hwal Choi
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Publication number: 20090185098Abstract: A dual Liquid Crystal Display (LCD), having a transmissive first panel and a reflective second panel, includes: a first LCD panel and a second LCD panel arranged on the same substrate, the first LCD panel displaying an image on a first surface thereof and the second LCD panel displaying an image on a second surface thereof; a backlight unit arranged on a bottom of the first LCD panel; and a housing, anchoring the first and second LCD panels and the backlight unit, and having an opening corresponding to an image-displaying surface of the second LCD panel.Type: ApplicationFiled: August 14, 2008Publication date: July 23, 2009Inventors: Kyu-Han Bae, Shawn Kim, Do-Young Kim, David Lee, Won-Ki Cho, Hwal Choi