US4934920A — Apparatus for producing semiconductor device

Claim 1

Independent Claim 87 words

An apparatus for processing of a semiconductor chip and a lead frame comprising: dust-proof cover means for shielding from ambient air a space around a semiconductor chip and a lead frame being processed and for containing dust created within said cover means during the processing; dust collecting means for collecting and removing the dust created during the processing within said dust-proof cover means from the interior of said dust-proof cover means; and means for generating streams of air of variable flow directions within said dust-free cover means.

Claim 2

Independent Claim 87 words

An apparatus for processing of a semiconductor chip and a lead frame comprising: dust-proof cover means for shielding from ambient air a space around a semiconductor chip and a lead frame being processed and for containing dust created within said cover means during the processing; dust collecting means for collecting and removing the dust created during the processing within said dust-proof cover means from the interior of said dust-proof cover means; and means for generating streams of air of variable flow directions within said dust-free cover means.

Claim 3

Dependent Claim 19 words

An apparatus according to claim 1, including said dust collecting means for extracting air inside said dust-proof cover means.

Claim 4

Dependent Claim 27 words

An apparatus according to claim 1 including said dust collecting means for establishing a lower pressure inside said dust-proof cover means than outside said dust-proof cover means.

Claim 5

Dependent Claim 38 words

An apparatus according to claim 1, wherein said means for generating streams of air includes air blowing means for blowing air, and means for oscillating said air blowing means to vary the direction of blowing of the air.

Claim 6

Dependent Claim 28 words

An apparatus according to claim 1 wherein said dust-proof cover means includes a frame and a thin plate mounted on said frame with an intermediately disposed elastic member.

Claim 7

Dependent Claim 13 words

An apparatus according to claim 5 wherein said frame is a rigid material.

Claim 8

Dependent Claim 12 words

An apparatus according to claim 5 wherein said thin plate is steel.

Claim 9

Dependent Claim 15 words

An apparatus according to claim 5 wherein said thin plate is of an acrylic resin.

Claim 10

Independent Claim 86 words

An apparatus for resin-molding a semi-conductor chip mounted on a lead frame comprising: a mold press for resin-molding; a loader for supplying semiconductor chips mounted on lead frames to be resin-molded to said mold press; an unloader for taking the resin-molded semiconductor chips with the lead frame from said mold press; first, second, and third dust-proof covers respectively independently surrounding said mold press, said loader, and said unloader; and dust collecting means for extracting dust and air from inside said first, second, and third dust-proof covers.

Claim 11

Independent Claim 86 words

An apparatus for resin-molding a semi-conductor chip mounted on a lead frame comprising: a mold press for resin-molding; a loader for supplying semiconductor chips mounted on lead frames to be resin-molded to said mold press; an unloader for taking the resin-molded semiconductor chips with the lead frame from said mold press; first, second, and third dust-proof covers respectively independently surrounding said mold press, said loader, and said unloader; and dust collecting means for extracting dust and air from inside said first, second, and third dust-proof covers.

Claim 12

Independent Claim 99 words

An apparatus for resin-molding a semiconductor chip mounted on a lead frame with a resin within a mold comprising: a mold press for resin-molding; a loader for supplying a material to be resin-molded to said mold press; an unloader for taking the resin-molded semiconductor chips with said lead frames from said mold press; first, second, and third dust-proof covers respectively independently surrounding said mold press, said loader, and said unloader; and pressure reducing means for establishing in the interior of said first, second, and third dust-proof covers a pressure which is lower than the pressure outside said dust-proof cover.

Claim 13

Independent Claim 99 words

An apparatus for resin-molding a semiconductor chip mounted on a lead frame with a resin within a mold comprising: a mold press for resin-molding; a loader for supplying a material to be resin-molded to said mold press; an unloader for taking the resin-molded semiconductor chips with said lead frames from said mold press; first, second, and third dust-proof covers respectively independently surrounding said mold press, said loader, and said unloader; and pressure reducing means for establishing in the interior of said first, second, and third dust-proof covers a pressure which is lower than the pressure outside said dust-proof cover.

Claim 14

Independent Claim 94 words

An apparatus for resin-molding a semiconductor device comprising: resin-molding means having a mold for resin-molding semiconductor chips which have been mounted to lead frames; feeding means having a loader for automatically feeding said lead frame with said mounted semiconductor chip mounted thereto into said mold of said resin-molding means; ejecting means having an unloader for automatically taking the resin-molded semiconductor chips with said lead frames out of said mold; a first dust-proof cover surrounding said resin-molding means; a second dust-proof cover surrounding said feeding means; and a third dust-proof cover surrounding said ejecting means.

Claim 15

Independent Claim 94 words

An apparatus for resin-molding a semiconductor device comprising: resin-molding means having a mold for resin-molding semiconductor chips which have been mounted to lead frames; feeding means having a loader for automatically feeding said lead frame with said mounted semiconductor chip mounted thereto into said mold of said resin-molding means; ejecting means having an unloader for automatically taking the resin-molded semiconductor chips with said lead frames out of said mold; a first dust-proof cover surrounding said resin-molding means; a second dust-proof cover surrounding said feeding means; and a third dust-proof cover surrounding said ejecting means.

Claim 16

Dependent Claim 85 words

An apparatus according to claim 11 further comprising: a first shutter disposed at the boundary between said first dust-proof cover and said second dust-proof cover for opening and closing to selectively provide communication between the interior of said first and second dust covers; and a second shutter disposed at the boundary between said first dust-proof cover and said third dust-proof cover for opening and closing to selectively provide communication between the interior of said first dust-proof cover and the interior of said third dust-proof cover.

Claim 17

Dependent Claim 34 words

An apparatus according to claim 11 wherein each of said first, second, and third dust proof covers has a frame and a thin plate fixed to the frame with an intermediately disposed elastic member.

Claim 18

Dependent Claim 25 words

An apparatus according to claim 11 further comprising air supply means for generating, within said first dust-proof cover, streams of air of varied flowing directions.

Claim 19

Dependent Claim 36 words

An apparatus according to claim 14 wherein said air supply means includes an air blowing means for blowing air, and oscillating means for oscillating said air blowing means to vary the direction of flow of air.

Claim 20

Dependent Claim 25 words

An apparatus according to claim 11 further comprising dust collecting means for extracting air from the interiors of said first, second, and third dust-proof covers.

Claim 21

Dependent Claim 41 words

An apparatus according to claim 16 wherein said dust collecting means includes a single dust collecting device and first, second and third dust collecting ducts through which said dust collecting device is connected to said first, second, and third dust-proof covers.

Claim 22

Dependent Claim 20 words

An apparatus according to claim 17 wherein each of said first to third dust-proof covers is provided with an opening.

Claim 23

Dependent Claim 16 words

An apparatus according to claim 18 further comprising a filter disposed in each of said openings.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-06-18	1993-12-18	1994-06-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-06-18	1997-12-18	1998-06-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-06-18	2001-12-18	2002-06-19	$7700.00	Window Closed / Lapsed

Apparatus for producing semiconductor device

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