Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Hongkyoon Choi

Sang Soo Jee

Byunghee Sohn

Kyeong-Sik Ju

Chanjae Ahn

Hyunjeong Jeon

Sungwon Choi

A Ra Jo

Sung Woo Hong

A composition for preparing an article including a polyimide or poly(imide-amide) copolymer, the composition including (1) a solution including at least one of (i) a polymer including at least one selected from a structural unit represented by Chemical Formula 1 and a structural unit represented by Chemical Formula 2; and (ii) a copolymer including at least one selected from a structural unit represented by Chemical Formula 1 and a structural unit represented by Chemical Formula 2, and a structural unit represented by Chemical Formula 3, and (2) a metallic salt soluble in the solution of the polymer and/or the copolymer, wherein the metallic salt is a salt of a metal selected from a Group 1 element, a Group 11 element, a Group 13 element, and a Group 14 element: 

Composition for preparing article including polyimide or poly(imide-amide) copolymer, article including polyimide or poly(imide-amide) copolymer, and electronic device including the article

A poly(imide-amide) copolymer including a structural unit represented by Chemical Formula 1; a structural unit represented by Chemical Formula 2; and any one of a structural unit represented by Chemical Formula 3, an amic acid precursor of the structural unit represented by Chemical Formula 3, and a combination thereof; wherein a cured material of the poly(imide-amide) copolymer may have a tensile modulus of greater than or equal to about 5.5 GPa, and a yellowness index of less than or equal to about 5: 

Poly(imide-amide) copolymer, a method for preparing a poly(imide-amide) copolymer, and an article including a poly(imide-amide) copolymer

A composition for preparing an organic/inorganic hybrid poly(amide-imide) copolymer including a poly(amide-imide) copolymer, a poly(amide-amic acid) copolymer, or a poly(amide-imide/amic acid) copolymer including a structural unit represented by Chemical Formula 1; and a structural unit represented by Chemical Formula 2, a structural unit represented by Chemical Formula 3, or a combination thereof, and a polyhedral oligomeric silsesquioxane including a functional group capable of forming a hydrogen bond: wherein in Chemical Formulae 1 to 3, A, B, D, and E are the same as defined in the detailed description.

Transparent polymer film and electronic device including the same

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Seoul, South Korea

Hongkyoon Choi