Patent ID: 9583448
Date: 2017-02-28
CPC Classifications: G02F,H01L,H05K

Claim:
1. A flexible chip on film, comprising: a base insulating layer configured to one end portion connected to a display panel and other one end portion connected to a primed circuit board; a metal layer disposed on an upper surface of the base insulating layer and including a circuit pattern; an integrated circuit chip disposed on an upper surface of the metal layer and electrically connected to the metal layer; a solder resist layer disposed on the upper surface of the metal layer and electrically insulated from the integrated circuit chip; and a reinforcing layer disposed on an upper surface of the solder resist layer and the reinforcing layer covering a whole curvature area of the flexible chip on film, wherein the solder resist layer is disposed between the metal layer and the reinforcing layer, wherein the integrated circuit chip is disposed on a portion of the base insulating layer between the one end portion and the other one end portion and partially overlaps the solder resist layer and the reinforcing layer in plan view, and wherein a neutral surface, in which a vector sum of a tensile force and a compressive force becomes substantially zero when the flexible chip on film is bent, is placed in the metal layer.