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US 2022/0017710 A1Published application
Polyimide film comprising two or more fillers with different particle diameters and electronic apparatus comprising same
AssigneePI Advanced Materials Co., Ltd.
InventorsDong Young WON, Dong Young KIM, Sung Il CHO, Jeong Yeul CHOI
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Abstract
The present invention provides a polyimide film comprising inorganic fillers, the inorganic fillers comprising: a first filler group having a particle diameter (D50) falling within the range of 2-2.7 μm; and a second filler group having an average particle diameter (D50) falling within the range of 1-1.7 μm, wherein each of the first and second filler groups satisfies relational expression 1, 0.7≤(D90−D10)/(D50)≤1.2, with respect to the particle diameter.
Claims18
A polyimide film, comprising a base film made of polyimide, and inorganic fillers dispersed in the base film,
- wherein the polyimide film has a modulus of 5.0 GPa or more,
- the inorganic fillers include a first filler group having an average particle diameter (D50) falling within the range of 2 μm to 2.7 μm and a second filler group having an average particle diameter (D50) falling within the range of 1 μm to 1.7 and
- each of the first filler group and the second filler group satisfies the following relational expression 1 for particle diameters:
- 0.7 μm≤(D90−D10)/D50≤1.2 μm (1).
1 more element
Dependencies are inferred from the claim text.