Patents Assigned to SK microworks solutions Co., Ltd.
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Publication number: 20230399537Abstract: A multilayer sheet including a transparent film with a total light transmittance of 85% or more in accordance with ISO 13468, a coating layer disposed on a first surface of the transparent film, and an elastic film disposed below a second surface of the transparent film is disclosed. The Martens hardness HM measured on a surface of the coating layer is 180 N/mm2 or more.Type: ApplicationFiled: June 6, 2023Publication date: December 14, 2023Applicants: SK microworks Co., LTD., SK microworks solutions Co., LTD.Inventors: Seok-Jong WOO, Jun-Ki PARK, Hyung-Woo CHO, Kwangho JANG, Kweon Hyung HAN
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Patent number: 11840611Abstract: The embodiments relate to a polyamide-based composite film that not only has excellent curl characteristics, mechanical properties, and optical properties, but also exhibits a privacy protection effect at a wide angle of view and glossiness characteristics similar to those glass at a main angle of view, and to a display device comprising the same. There are provided a polyamide-based composite film that comprises a base film comprising a polyamide-based polymer; and a functional layer disposed on the base film, wherein a glossiness control value according to Equation 1 is 0 or more, and a displace device comprising the same.Type: GrantFiled: August 20, 2021Date of Patent: December 12, 2023Assignees: SK Microworks Solutions Co., LTD., SK Microworks Co., LTD.Inventors: Yun Hee Seo, Sang Hun Choi, Jin Woo Lee, Jung Hee Ki, Dae Seong Oh, Han Jun Kim, Sun Hwan Kim
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Patent number: 11822114Abstract: In the display device according to an embodiment, optical functional elements such as a prism sheet and a light diffusion layer are combined, and an optical composite sheet to which a light absorbing layer that selectively absorbs light of a specific wavelength band is inserted is used, so that the color gamut can be enhanced as compared with the prior art.Type: GrantFiled: July 22, 2021Date of Patent: November 21, 2023Assignee: SK MICROWORKS SOLUTIONS CO., LTD.Inventors: Kyoo Choong Cho, Tae Hoon Kim, Yong Jae Choe, Jae Ho Ko
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Patent number: 11805616Abstract: Embodiments relate to a polyimide-based composite film, which comprises a base film comprising a polyimide-based resin; and a functional layer disposed on the base film, wherein when the side of the functional layer located opposite to the side in contact with the base film is referred to as a first side and when the side of the base film in contact with the functional layer is referred to as a second side, the leveling index represented by Equation 1 is less than 0.75.Type: GrantFiled: July 29, 2020Date of Patent: October 31, 2023Assignees: SK microworks Co., Ltd., SK microworks solutions Co., Ltd.Inventors: Sunhwan Kim, Jung Hee Ki, Jin Woo Lee, Dawoo Jeong, Seung Yong Pyun, Yun Hee Seo
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Publication number: 20230271404Abstract: A multilayer sheet including: a transparent film with a total light transmittance of 85% or more in accordance with ISO 13468; a coating layer disposed on a first surface of the transparent film; and an adhesive layer disposed on a second surface, opposite to the first surface, of the transparent film, wherein a thickness of the adhesive layer after being cured is two times or less of a thickness of the coating layer, is disclosed.Type: ApplicationFiled: October 31, 2022Publication date: August 31, 2023Applicant: SK microworks solutions Co., Ltd.Inventors: Seok-Jong WOO, Jun-Ki PARK, Hyung-Woo CHO, Seung-Yong PYUN
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Patent number: 11731410Abstract: The embodiments relate to a polyamide-based composite film that has excellent curl characteristics, mechanical properties, and optical properties, as well as, in particular, is effective in preventing reflection in the visible light region, remarkably reduces the rainbow phenomenon, and achieves a texture similar to that of glass, and a display device comprising the same. There are provided a polyamide-based composite film, which comprises a base film comprising a polyamide-based polymer; and a functional layer disposed on the base film, wherein the in-plane retardation (Re) measured with light having a wavelength of 550 nm is 100 nm to 220 nm, and a display device comprising the same.Type: GrantFiled: April 27, 2022Date of Patent: August 22, 2023Assignees: SK MICROWORKS CO., LTD., SK microworks solutions Co., Ltd.Inventors: Yun-Hee Seo, Sang Hun Choi, Jung Hee Ki, Jin Woo Lee, Dae Seong Oh, Han Jun Kim, Sun Hwan Kim, Heung Sik Kim
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Patent number: 11693173Abstract: An optical composite sheet is disclosed. In the optical composite sheet, optical functional elements such as a prism sheet and a light diffusion layer are combined, and a light absorbing layer that selectively absorbs light of a specific wavelength band is inserted, so that the optical performance and color gamut can be enhanced as compared with the prior art. In particular, the color transmittance of the optical composite sheet with respect to wavelength measured for each viewing angle satisfies a specific relationship, whereby it is possible to effectively reduce the color deviation with respect to the viewing angle.Type: GrantFiled: July 22, 2021Date of Patent: July 4, 2023Assignee: SK MICROWORKS SOLUTIONS CO., LTD.Inventors: Kyoo Choong Cho, Tae Hoon Kim, Yong Jae Choe, Jae Ho Ko