Abstract:
A composition for forming an adhesive film is provided to prevent an acrylic adhesive binder and UV curable acrylate from being transferred to an adhesive layer when used in a dicing die bonding film, and to realize high pick-up property even in large chips greater than 10 mm X 10 mm after UV irradiation. A composition for forming an adhesive film comprises: (A) 100 parts by weight of a polymer binder resin; (B) 20-150 parts by weight of a low-molecular weight UV curable acrylate; (C) 0.1-10 parts by weight of a thermal curing agent; and (D) 0.1-5 parts by weight of a photopolymerization initiator based on 100 parts by weight of the UV curable acrylate. The adhesive film formed by the composition has a sea-island surface structure, wherein the island region has an average size of 1-10 micrometers.
Abstract:
PURPOSE: An adhesive composition is provided to improve light-leakage phenomenon by increasing elasticity of an adhesive, and to have excellent durability under high temperatures and high humidity by not using an oligomer shape molecule. CONSTITUTION: An adhesive composition has a storage modulus of 8×10^5 - 1×10^8 dyne/cm^2, and has gel fraction of 83-95% In formula 1: gel fraction(%)=A/B × 100. In formula 1, A is residual weight after solving at room temperature(23°C) for 48 hours, and drying for 24 hours, and B is an initial mass. The adhesive composition comprises (meth)acrylate copolymer and a crosslinking agent. The (meth)acrylate copolymer comprises a (meth)acrylate resin of which glass transition temperature is 200-250 K, and a (meth)acrylate resin of which glass transition temperature is 250-300K.
Abstract:
PURPOSE: An adhesive and an optical member using thereof are provided to reduce in-plane temperature deviation by controlling heat transfer phenomenon from edge type backlight to display panel. CONSTITUTION: An adhesive comprises 100.0 parts by weight of (meta)acrylate based resin and 0.01-10 parts by weight of cross-linking agent. The thermal conductivity is 0.3 W/Mk or less. The cross-linking agent is more than one which is selected from the following: isocyanate based, epoxy based, aziridine based. The adhesive additionally includes silane coupling agent to the amount of 0.01-2 parts by weight. The (meta)acrylate based resin includes 0.005-0.5 mole% of hydroxy group and 0.5-5 mole% of carboxy group.
Abstract:
본 발명의 점착제 조성물은 (A)아크릴계 수지; (B)이소시아네이트계 가교제; 및 (C)카보디이미드계 가교제를 포함하여 이루어지고, 10gf/㎜ 2 하중을 1000 초동안 가하여 밀려난 거리가 100 ㎛ 이하이고, 저장 탄성율이 10Hz, 30℃에서 1×10 5 내지 1×10 7 Pa 인 것을 특징으로 한다. 상기 점착제 조성물은은 내열 빛샘에 우수한 특성을 가지며, 단부 들뜸이나 기포가 생기지 않는다.
Abstract:
PURPOSE: An adhesive composition is provided to be able to impart low light leaking performance by forming a dense cross-linked structure, to be able to reduce aging time of an adhesive, to able to minimize adhesion change after curing, and to have excellent durability even under high temperature and high humidity. CONSTITUTION: An adhesive composition comprises an acrylic resin, an isocyanate based crosslinking agent, and a carbodiimide based crosslinking agent. The difference of peeling force of 180° by JIS 2107 standard between a day and four days after aging is 100 g/25mm or less, and heat-proof peeling force is 2000g/25mm or less. The acrylic resin comprises a first (meth)acrylate copolymer comprising 0.01 weight% or less of a hydroxy group-containing monomer, and a second (meth)acrylate copolymer comprising 0.01-5 weight% of a hydroxy-containing monomer.
Abstract:
본 발명은 기재층, 점착필름, 접착층이 순차로 적층된 다이싱 다이 본딩 필름에 있어서, 점착필름(4)을 형성하는 조성물이 (A)고분자 바인더 수지, (B)저분자의 UV경화형 아크릴레이트, (C)열경화제, 및 (D)광중합 개시제를 포함하고, 점착필름의 표면 구조가 바다-섬 (해도(Sea-Island)) 구조를 가지고, 섬 영역의 평균 크기가 1 내지 10마이크론인 다이싱 다이 본드 필름에 관한 것이다. 본 발명에 의한 다이싱 다이본딩 필름은 칩 크기가 10mm*10mm 이상 크기의 칩에서도 픽업성이 매우 우수하다. 웨이퍼, 점착 테이프, 해도구조, 다이싱, 다이 본딩, 우레탄 아크릴레이트,
Abstract:
PURPOSE: A display device including an edge backlight unit is provided to restrict a light source phenomena according to the local temperature deflection. CONSTITUTION: A display device includes a display panel, a mold frame(300), a backlight unit, a insulating spacer. The mold frame is provides light to the display panel by including plate facing a side to an edge light source and the light source. The insulating space blocks an insulating head to the display unit from the edge light source by introducing on the backlight unit.
Abstract:
본 발명은 조성물의 성분이 비닐기를 함유한 아크릴계 점착수지 조성물, 이를 포함하는 광경화형 점착조성물 및 이를 포함하는 점착테이프에 관한 것으로, 본 발명에 의한 광경화형 점착조성물은 우수한 박리력을 갖는 아크릴계 점착수지 조성물을 포함하고 있어, 초기 점착력이 우수하고, 낮은 자외선 에너지에서도 광경화 후 우수한 박리성을 가짐으로써, 낮은 박리력이 요구되는 다이싱용 또는 다이싱 다이본딩용 점착 테이프에 유용하게 사용할 수 있다. 아크릴계 점착수지, 아크릴산, 메타크릴레이트, 부가중합, 광경화형 점착조성물, 점착 테이프
Abstract:
A photocurable composition for forming an adhesive film is provided to realize excellent pick-up property by virtue of a sufficient drop in the adhesion after UV curing, and to facilitate die bonding on a PCB or lead frame by fixing chips during dicing and easily removing the chips during pick-up. A photocurable composition for forming an adhesive film comprises: (A) 100 parts by weight of a polymer binder resin; 20-150 parts by weight of a UV-curable urethane acrylate oligomer; (C) 5-50 parts by weight of a UV-curable acrylate present in a solid phase at room temperature; (D) 0.1-10 parts by weight of a heat curing agent; and (E) 0.1-5 parts by weight of a photopolymerization initiator based on 100 parts by weight of the UV curable acrylates (B)+(C). The binder polymer resin is at least one resin selected from acrylic, polyester, urethane, silicone and natural rubber resins.