Flexible substrate for package of die
AssigneesChipMOS Technologies Inc., ChipMOS Technologies (Bermuda) Ltd.
InventorsKuang-Hua Liu, Min-O Huang
Life of this patent
Estimating the term…
Abstract
The present invention provides a flexible substrate for a package of a die which has an active surface and a plurality of first bond pads arranged in a form of a row and formed on the active surface. The flexible substrate includes a flexible insulating film and a plurality of first leads formed on the flexible insulating film. Each of the first leads corresponds to one of the first bond pads and has a respective first body portion, a respective first bond portion and a respective first extension portion. For each of the first leads, the width of the first bond portion is larger than those of the first body portion and the first extension portion.
Claims8
A flexible substrate for a package of a die having an active surface and a plurality of first bond pads and at least one second bond pad, the first bond pads being arranged in a form of a row and formed on the active surface of the die, said flexible substrate comprising:
- a flexible insulating film;
- a plurality of first leads, formed on the flexible insulating film, each of the first leads corresponding to one of the first bond pads;
- and
- at least one bridge lead, formed on the flexible insulating film, each of the at least one bridge lead corresponding to one of the at least one second bond pad and having respective two body portions and at least one bridge portion connecting the two body portions, wherein both of the body portions are formed on the flexible insulating film and elongated to the die;
- wherein when the die is packed, each of the first leads is by a respective first bump bonded to the corresponding first bond pad, each of the at least one bridge lead is by a respective second bump bonded to the corresponding second bond pad, the size of the second bump is larger than that of the first bumps;
- wherein the at least one bridge lead is bonded to the corresponding second bump with the bridge portion and part of each body portion adjacent to the bridge portion.
Dependencies are inferred from the claim text.