Patent ID: 9379054
Filing Date: 2016-06-28
CPC Classification: H01L

Claim Text:
1. A chip on film, comprising a substrate having a plurality of input end leads and a plurality of output end leads, a region where the input end leads are located and a region where the output end lead is located are defined as a binding region, wherein the maximum thickness of the binding region is larger than the maximum thickness of other parts of the substrate than the binding region; wherein the binding region has a first attachment film therein configured to cover the input end leads and expose connecting terminals of the input end leads; and the binding region has a second attachment film therein configured to cover the output end leads and expose connecting terminals of the output end leads; the chip on film has a large bandwidth, the region where the input end leads are located and the region where the output end leads are located are arranged in a form of strip along a width direction of the substrate and positioned at two opposite sides of the substrate respectively; the input end leads are parallel with each other along the width direction of the substrate and spaced apart from each other within the region of the input end leads; and the output end leads are parallel with each other along the width direction of the substrate and spaced apart from each other within the region of the output end leads, wherein the connecting terminals of the input end leads have the same alignment direction within the region of the input end leads and extend toward an outside of the substrate, and the connecting terminals of the output end leads have the same alignment direction within the region of the output end leads and extend toward the outside of the substrate, wherein the first and/or second attachment film is/are made of a cellulose triacetate having a pressure-sensitive adhesive, a difference of the maximum thickness of the binding region from the maximum thickness of other parts of the substrate than the binding region is in a range of 0.1-0.2 mm.