Semiconductor device connected by anisotropic conductive film

1. A semiconductor device connected by an anisotropic conductive film, the anisotropic conductive film having:

a differential scanning calorimeter onset temperature of 60° C. to 85° C., and

an elastic modulus change of 30% or less, as calculated by Equation 1, below,

Elastic modulus change (%)={( M 1 −M 0 )/ M 0 }×100  [Equation 1]

wherein:

M 0 is an initial elastic modulus in kgf/cm 2 of the anisotropic conductive film as measured at 25° C., and

M 1 is an elastic modulus in kgf/cm 2 of the anisotropic conductive film as measured at 25° C. after the film is left at 25° C. for 170 hours,

wherein the anisotropic conductive film includes:

20 wt % to 50 wt % of an epoxy resin that includes a hydrogenated epoxy resin, based on a total weight of a composition of the anisotropic conductive film in terms of solid content, the epoxy resin including 30 parts by weight to 60 parts by weight of the hydrogenated epoxy resin, based on 100 parts by weight of the epoxy resin,

5 parts by weight to 30 parts by weight of a polymerization catalyst represented by Formula 1, below, based on 100 parts by weight of the hydrogenated epoxy resin,

0.1 parts by weight to 30 parts by weight of a compound represented by Formula 2, below, based on 100 parts by weight of the polymerization catalyst,

25 wt % to 60 wt % of a binder resin, based on the total weight of a composition of the anisotropic conductive film in terms of solid content and

1 wt % to 30 wt % of conductive particles, based on the total weight of a composition of the anisotropic conductive film in terms of solid content,

wherein, in Formula 1,

R 1 to R 5 are each independently a hydrogen atom, an alkyl group, an acetyl group, an alkoxycarbonyl group, a benzoyl group, or a benzyloxycarbonyl group, and

R 6 and R 7 are each independently an alkyl group, a benzyl group, an o-methylbenzyl group, an m-methylbenzyl group, a p-methylbenzyl group, or a naphthylmethyl group,

wherein, in Formula 2,

R 8 to R 12 are each independently a hydrogen atom, an alkyl group, an acetyl group, an alkoxycarbonyl group, a benzoyl group, or a benzyloxycarbonyl group,

R 13 and R 14 are each independently an alkyl group, a benzyl group, an o-methylbenzyl group, an m-methylbenzyl group, a p-methylbenzyl group, or a naphthylmethyl group, and

X 1 is a halogen atom or an alkyl sulfuric acid.

2. The semiconductor device as claimed in claim 1 , wherein:

R 1 to R 5 are each a hydrogen atom, and

R 6 and R 7 are each independently an alkyl group, a benzyl group, an o-methylbenzyl group, an m-methylbenzyl group, a p-methylbenzyl group, or a naphthylmethyl group.

3. The semiconductor device as claimed in claim 1 , wherein:

R 8 to R 12 are each a hydrogen atom,

R 13 and R 14 are each independently an alkyl group, a benzyl group, an o-methylbenzyl group, an m-methylbenzyl group, a p-methylbenzyl group, or a naphthylmethyl group, and

X 1 is an alkyl sulfuric acid.

4. The semiconductor device as claimed in claim 1 , wherein the hydrogenated epoxy resin includes:

a hydrogenated bisphenol A epoxy monomer represented by Formula 3, below, or

a hydrogenated bisphenol A epoxy oligomer represented by Formula 4, below,

wherein, in Formula 4, n ranges from 0.1 to 13.

5. The semiconductor device as claimed in claim 1 , wherein the anisotropic conductive film has an initial elastic modulus M 0 of 100 kgf/cm 2 to 1,200 kgf/cm 2 .

6. The semiconductor device as claimed in claim 1 , wherein the semiconductor device includes:

a first connection member having a first electrode,

a second connection member having a second electrode, and

the anisotropic conductive film between the first connection member and second connection member to connect the first and second electrodes.

7. The semiconductor device as claimed in claim 6 , wherein:

one of the first connection member and second connection member includes an IC chip or a driver IC chip, and

the other of the first connection member and second connection member includes a glass substrate.