Electrical monitoring of flip-chip hybridization

Details Electrical monitoring of flip-chip hybridization Electrical monitoring of flip-chip hybridization

1987-12-28

1989-02-07

Karlsen, Ernest F.

Electricity: measuring and testing

Plural, automatically sequential tests

324158D, 324158R, 324537, 437 8, G01R 3128, H01L 2166

Patent

active

048034223

ABSTRACT:
An array of photosensors is electrically connected to an array of individually readable capacitive storage cells in a one-to-one correspondence, each photosensor and each storage cell having a parasitic resistance. The interconnection is performed in an environment which is adapted to minimize photon impingement upon said photosensors cells and thereby minimize photocurrent. Each connection, if successfully made, places the parasitic resistance of a photosensor in electrical parallelism with the parasitic resistance of its corresponding capacitive storage cell. The continuity of each of the electrical interconnections is monitored by precharging the storage cells to a known potential difference, after a suitable period of time reading the potential differences across each storage cell to obtain a set of analog signals representing the magnitude of the potential differences remaining across the storage cell, obtaining a digital signal representation of the magnitude of each of said analog signals, and displaying the digital signals in analog form in an ordered pattern of indicia on a variable intensity screen such that each digital signal is represented by a uniquely positioned indicium, the intensity of each of said indicia being inversely proportional to the magnitude of the potential difference represented by the indicium's associated digital signal.

REFERENCES:
patent: 2465355 (1949-03-01), Cook
patent: 2535043 (1950-12-01), Cook
patent: 2878450 (1959-03-01), Rabier
patent: 3115605 (1963-12-01), Coulter
patent: 3179883 (1965-04-01), Farrow
patent: 3398363 (1968-08-01), Mortley
patent: 3523246 (1970-08-01), Hall et al.
patent: 4257043 (1981-03-01), Tsuchiko
patent: 4417203 (1983-11-01), Pfeiffer et al.
patent: 4633175 (1986-12-01), Ritchie et al.

Affiliated with

Also associated with

Rating

Electrical monitoring of flip-chip hybridization does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical monitoring of flip-chip hybridization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical monitoring of flip-chip hybridization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1086587