Patent ID: 6955945

Claim:
A method of making a high-density circuit module, the method comprising the steps of: (a) providing a first CSP having an upper surface and a lower surface with first CSP contacts rising above the lower surface, the upper surface having an extent defined by first and second edges of the first CSP; (b) disposing a first form standard above the upper surface of the first CSP such that at least one portion of the form standard extends downward outside of the lateral extent of the upper surface of the first CSP; (c) placing the first CSP above flex circuitry such that the first CSP contacts are in contact with a plurality of lower flex contacts of the flex circuitry; (d) wrapping the flex circuitry partially about the first form standard such that at least a portion of a lower surface of the flex circuitry is inverted and faces upward above the first form standard, the flex circuitry being fixed to the first form standard; (e) providing a second CSP having an upper surface and a lower surface with second CSP contacts rising above the lower surface, the upper surface having a lateral extent defined by first and second edges of the second CSP; (f) placing the second CSP adjacent to the portion of the flex circuitry disposed above the first form standard such that the second CSP contacts of the second CSP are in contact with a plurality of upper flex contacts of the flex circuitry accessible within recesses through the portion of the lower surface of the flex circuitry that is inverted and faces upward above the first form standard; (g) placing a second form standard adjacent to the upper surface of the second CSP such that at least one portion of the second form standard extends downward outside of the lateral extent of the second CSP.