×

Semiconductor device, production method thereof, and tape carrier for semiconductor device used for producing the semiconductor device

  • US 5,814,894 A
  • Filed: 04/04/1996
  • Issued: 09/29/1998
  • Est. Priority Date: 04/07/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A semiconductor device, wherein a semiconductor chip equipped with at least one electrode is mounted on an auxiliary wiring plate, wherein the auxiliary wiring plate has a surface to which the semiconductor chip is mounted such that the electrode side of the semiconductor chip faces the surface of the auxiliary wiring plate, at least one leading conductor is disposed in the inside of said auxiliary wiring plate, one end of the leading conductor forms an internal electrode projecting from the surface of said auxiliary wiring plate at the semiconductor chip-mounting side, the other end of the leading conductor forms an external electrode projecting from the surface of said auxiliary wiring plate at the opposite side to said semiconductor chip-mounting side, and said internal electrode is connected to the electrode of the semiconductor chip, at least a gap between the semiconductor chip and the auxiliary wiring plate being encapsulated with a heat-welding polyimide resin layer, wherein said heat-welding polyimide resin layer is formed by at least one of the heat-welding polyimides represented by the following formulae (1) to (5);

  • ##STR31## wherein in the above formulae (1) to (5), R1 represents ##STR32## R2 represents --C3 H6 --, --C4 H8 --, or ##STR33## R3 represents an aromatic silicon-free diamine residue;

    Ar represents an aromatic tetracarboxylic acid residue;

    n represents an integer of from 1 to 100;

    a and b represent numbers satisfying the relationship of a+b=1 and the relationship of 0.3≦

    a/(a+b)≦

    1.00; and

    the polyimide of formulae (1) to (5) may be a random copolymer or a block copolymer.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×