COMPOSITE SHEET AND SUBSTRATE FOR DISPLAY DEVICE COMPRISING THE SAME

PURPOSE: A substrate for a display device is provided to reduce flatness and moisture permeability and to improve flex resistance, flexibility, and durability. CONSTITUTION: A substrate for a display device comprises a matrix(2), a reinforcing agent(1) impregnated in a matrix, a coating layer formed...

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Bibliographische Detailangaben
Hauptverfasser: KIM, SUNG KOOK, KIM, YOUNG KWON, KIM, TAE JUNG, CHUNG, KYU HA, CHOI, SEOK WON, KWAK, BYEONG DO, LEE, WOO JIN, IM, SUNG HAN, JEONG, EUN HWAN, LEE, SANG KEOL, KIM, TAE HO
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:PURPOSE: A substrate for a display device is provided to reduce flatness and moisture permeability and to improve flex resistance, flexibility, and durability. CONSTITUTION: A substrate for a display device comprises a matrix(2), a reinforcing agent(1) impregnated in a matrix, a coating layer formed on at least one side of the matrix, and a barrier layer(4) formed on one side of the coating layer. If the elastic modulus of the matrix is E2 at 25°C and the elastic modulus of the coating layer is E3 at 25°C, E3/E2 is 5 x 10^4 or less. The coating layer has a gradient elastic modulus structure. The elastic modulus of the matrix at 25°C is 0.1GPa or less. The elastic modulus of the coating layer is 0.1GP-10GPa. The elastic modulus of the barrier layer is 10GPa or more. The coating layer comprises one or more selected from an acrylic-based resin, epoxy-based resin, silicon-based resin, urethane-based resin, and unsaturated polyester-based resin.