Abstract An array of transistors is formed in a monocrystalline semiconductor wafer. The wafer is hot press bonded to a thermoplastic sheet. The wafer is scribed and broken to separate the individual transistors. The sheet is stretched over a frame to space the transistor chips from each other. A piece of metallized film is placed metal-side-down over the matrix of chips. This assembly is placed within a resilient cushion and enclosed within a shipping box that inter alia compresses the cushion so as to make a pressure contact between each chip and the metallized film. The metallized film to chip bond affords a high shear strength, provides an added means for locking the chips in their matrix pattern, and prevents the dislodging of chips from the plastic sheet when the package is subjected to mechanical shock or vibration that may occur in handling or in transit.
A shipping package for semiconductor chips comprising: a. a frame; b. a plastic sheet drawn tightly over said frame and fastened thereto; c. a matrix of spaced semiconductor chips adhering to a surface of said sheet; d. a film having a metal face lying in contact with a surface of said chips; e. a compressed resilient cushioning means encompassing the assembly of said frame, said sheet, said matrix and said film for the purpose of holding said film in compressed contact with said chips and for providing a protective cushion for said assembly; and f. a housing containing said assembly and said compressed resilient means.
Claim 2
Dependent Claim
105 words
A shipping package for semiconductor chips comprising: a. a frame; b. a plastic sheet drawn tightly over said frame and fastened thereto; c. a matrix of spaced semiconductor chips adhering to a surface of said sheet; d. a film having a metal face lying in contact with a surface of said chips; e. a compressed resilient cushioning means encompassing the assembly of said frame, said sheet, said matrix and said film for the purpose of holding said film in compressed contact with said chips and for providing a protective cushion for said assembly; and f. a housing containing said assembly and said compressed resilient means.
Claim 3
Dependent Claim
40 words
The package of claim 1 wherein said frame is a circular band and wherein said fastening of said plastic sheet thereto is accomplished by a rubber ring being stretched over said sheet at the outer periphery of said metal band.
Claim 4
Dependent Claim
17 words
The package of claim 1 wherein said film is polyethyleneterephthalate being metallized on at least one surface.
Claim 5
Dependent Claim
18 words
The package of claim 1 wherein said metal face is aluminum having been vacuum deposited on said film.
Claim 6
Dependent Claim
29 words
The package of claim 1 wherein said cushioning means is composed of at least two polyurethane foam pieces having a generally conformal shape with respect to said encompassed assembly.
Claim 7
Dependent Claim
15 words
The package of claim 1 wherein said housing is a thermoplastic box with a cover.