Patent ID: 7755260
Filing Date: 2010-07-13
Classification: H05K,Y10T

Abstract:
1. A structure comprising: a multiple-layer electrical circuit board having an arm, wherein the arm has a connected end connected to the multiple-layer electrical circuit board and an unconnected end located opposite to the connected end of the arm, wherein the arm has a front side and a backside located opposite to the front side of the arm, wherein the backside of the arm is located adjacent to the multiple layer electrical circuit board, a dimple formed on the unconnected end on a front side of the arm, an air gap formed between the backside of the arm and the multiple-layer electrical circuit board, permitting the arm to flex into a space of the air gap, wherein the air gap is a completely empty space extending from the backside of the unconnected end of the arm to the multiple-layer electrical circuit board, and the air gap measured from the backside of the arm to the multiple-layer electrical circuit board is about 15 microns to about 45 microns, and an adhesive film laminated to the printed circuit board, wherein the adhesive film is translucent and includes openings to permit the arm to pass therethrough.