• 专利标题:   Composition useful for preparing light-shielding film of smartphone camera module as spacer, washer and coating solution comprises carbon-based particles, thermosetting binder resins, dispersants, polymer beads and solvents.
  • 专利号:   KR2023055156-A, CN115991950-A
  • 发明人:   PARK S C, YUN J H, KIM Y S, KIM Y, PIAO S
  • 专利权人:   TSM CARBON CO LTD
  • 国际专利分类:   C08J005/18, C08J007/04, C08K003/04, C08L101/00, C08L033/08, C08L033/12, C08L083/04, C09D007/61, G02B001/10, C08L067/02, C09D133/02, C09D007/65, G02B001/00, G03B011/00, G03B030/00
  • 专利详细信息:   KR2023055156-A 25 Apr 2023 C08K-003/04 202337 Pages: 7
  • 申请详细信息:   KR2023055156-A KR138535 18 Oct 2021
  • 优先权号:   KR138535

▎ 摘  要

NOVELTY - Composition comprises carbon-based particles, thermosetting binder resins, dispersants, polymer beads and solvents. The carbon-based particles are reduced graphene oxide particles, and/or graphene nano plate. The polymer beads are butyl methyl acrylate, polymethyl methacrylate or polymethylsilsesquioxane. USE - The composition is useful for preparing light-shielding film of smartphone camera module as spacer, washer and coating solution. ADVANTAGE - The light-shielding film: has low reflectance and improved blackness, glossiness, reflectance, and electrical characteristics; and suppress a flare phenomenon caused by internal light. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for light-shielding film made by applying the composition on film having a blackness (Lx ) of ≤ 20 and reflectance of ≤ 4.0.