Apparatus for testing a bare-chip LSI mounting on a printed board
AssigneeNEC Corporation
InventorYoshihito Fukasawa
Life of this patent
Estimating the term…
Abstract
In a bare-chip LSI mounting board test apparatus, at the stage that a bare-chip LSI is mounted on a board, tester boards on which equivalent parts corresponding to SMT parts other than the bare-chip LSI to be mounted on the board is confronted to the board, probes connected to the respective equivalent parts of the tester boards which correspond to the mount parts are brought into contact with pads located at the mount places of the mount parts on the board on which the bare-chip LSI is mounted to built a quasi-mount state of the mount parts to the board, and under this state a test signal is transmitted from a controller to the bare-chip LSI.
Claims14
A bare-chip LSI mounting board test apparatus comprising:
- at least one tester board comprising equivalent parts corresponding to mount parts other than a bare-chip LSI to be mounted on a board at mount places,
- probes connected to the respective equivalent parts of said tester boards,
- driving means for bringing said probes into contact with pads located at the mount places of said mount parts on said board to build a quasi-mount state of said mount parts to said board, and
- a controller for transmitting a test signal to said bare-chip LSI under the quasi-mount state.
An apparatus for testing a bare-chip LSI mounted to a printed board, said apparatus comprising:
- at least one fixture portion;
- at least one equivalent part attached to said at least one fixture portion, said at least one equivalent part corresponding to at least one mounted part to be fixed to at least one pad on said printed board;
- at least one probe pin attached to said at least one fixture portion, said at least one probe pin for electrically connecting said at least one equivalent part to said at least one pad;
- a driving portion for moving said at least one fixture portion so that said at least one probe pin contacts said at least one pad on said printed board, and
- a controller for transmitting a test signal to said printed board, said bare-chip LSI, and said at least one equivalent part,
- wherein said at least one equivalent part, said bare-chip LSI, and said printed board are electrically connected.
A bare-chip LSI mounting board test apparatus comprising:
- at least one tester board comprising equivalent parts corresponding to mount parts other than a bare-chip LSI to be mounted on a board at mount places,
- probes connected to the respective equivalent parts of said tester boards,
- a driving portion for bringing said probes into contact with pads located at the mount places of said mount parts on said board to build a quasi-mount state of said mount parts to said board, and
- a controller for transmitting a test signal to said bare-chip LSI under the quasi-mount state.
Dependencies are inferred from the claim text.