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Class 257/E23.045 - Deformation absorbing parts in lead frame plane, e.g., meanderline shape (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E23.043. This subclass
No. of patents: 38
Last issue date: 08/05/2008


NumberTitleIssue Date
7408246Controlling warping in integrated circuit devices
Techniques for integrated circuit device fabrication are provided. In one aspect, an integrated circuit device comprises a base, at least one die attached to the base, and a counterbalancing layer on at least a portion of at least one side of the base adapted to com...
08/05/2008
7307351Electronic component, semiconductor device, methods of manufacturing the same, circuit board, and electronic instrument
The present invention is a semiconductor device capable of relieving thermal stress without breaking wire. It comprises a semiconductor chip (12), a solder ball (20) for external connection, wiring (18) for electrically connecting the semiconduc...
12/11/2007
7239008Semiconductor apparatus and method for fabricating the same
A semiconductor apparatus includes a semiconductor pellet having electrodes thereon; a plurality of lead terminals, which electrically connect the electrodes of the semiconductor pellet to terminals formed on a substrate; and a molding member, which is filled around...
07/03/2007
7235881Electronic component, semiconductor device, methods of manufacturing the same, circuit board, and electronic instrument
The present invention is a semiconductor device capable of relieving thermal stress without breaking wire. It comprises a semiconductor chip (12), a solder ball (20) for external connection, wiring (18) for electrically connecting the semiconduc...
06/26/2007
7193299Conductor frame and housing for a radiation-emitting component, radiation-emitting component and display and/or illumination system using radiation-emitting components
A leadframe for a surface-mountable radiation-emitting component, preferably a light-emitting diode component, having at least one chip connection region and at least one external connection strip. The leadframe is formed in planar fashion and a deformation element,...
03/20/2007
7157312Surface mount package and method for forming multi-chip microsensor device
A surface mount package for a multi-chip device has a leadframe formed with first and second die pads and readouts from the respective die pads. An environmentally responsive sensor chip is secured to the first die pad and an environmentally isolated chip is secured...
01/02/2007
6633077Semiconductor device and method for manufacturing the same
On a surface of a pair of support leads formed in one piece with a die pad on which a semiconductor chip is mounted, a protrusion is formed on the side that the semiconductor chip is mounted. During a resin-sealing, a lower surface of the die pad is broug...
10/14/2003
6555899Semiconductor package leadframe assembly and method of manufacture
A semiconductor package and the leadframe therefor having a reverse-down set part formed in the tie bar supporting the chip paddle. The reverse-down set part of the tie bar may be formed by a mechanical stamping process in such a way that it is present wi...
04/29/2003
6518650Tape under frame for lead frame IC package assembly
A semiconductor integrated circuit device, and method of manufacturing the same, having a conventional-type lead frame with the die paddle removed. In particular, the die paddle is replaced with a section of tape that is supported by the ends of the lead ...
02/11/2003
6455348Lead frame, resin-molded semiconductor device, and method for manufacturing the same
A lead frame including signal-connecting leads, a die pad and support leads is provided. A semiconductor chip is bonded to the die pad with an adhesive. The semiconductor chip, electrode pads and the signal-connecting leads are electrically connected to e...
09/24/2002
6455922Deformation-absorbing leadframe for semiconductor devices
A leadframe structure for use with an integrated circuit chip, comprising a chip mount pad having an area smaller than said chip intended for mounting; a plurality of support members, each attached externally to the perimeter of said pad and internally to...
09/24/2002
6306684Stress reducing lead-frame for plastic encapsulation
A method for attaching an integrated circuit die to a mounting structure, the method having the steps of: forming a mounting structure having a die pad and at least one spreader; applying an adhesive to the die pad and the at least one spreader of the mou...
10/23/2001
6303984Lead frame including angle iron tie bar
A lead frame and method of making the same are provided. The lead frame includes a die mounting portion, first and second pairs of tie bars, and first and second tie bar bridges extending between respective second extension portions of each tie bar pair. ...
10/16/2001
6215177Tape under frame for conventional-type IC package assembly
A semiconductor integrated circuit device, and method of manufacturing the same, having a conventional-type lead frame with the die paddle removed. In particular, the die paddle is replaced with a section of tape that is supported by the ends of the lead ...
04/10/2001
6169322Die attach pad adapted to reduce delamination stress and method of using same
The invention enables a die to be attached to a die attach pad so as to reduce delamination stress that can arise when the die and die attach pad are heated, and so as to provide support for the die at locations where bond pads are formed so that the die ...
01/02/2001
6111307Method of making lead frame including angle iron tie bar
A lead frame and method of making the same are provided. The lead frame includes a die mounting portion, first and second pairs of tie bars, and first and second tie bar bridges extending between respective second extension portions of each tie bar pair. ...
08/29/2000
6091133Assembly of a semiconductor device and paddleless lead frame having tape extending between the lead fingers
A semiconductor integrated circuit device, and method of manufacturing the same, having a conventional-type lead frame with the die paddle removed. In particular, the die paddle is replaced with a section of tape that is supported by the ends of the lead ...
07/18/2000
6081029Resin encapsulated semiconductor device having a reduced thickness and improved reliability
A lead frame including signal-connecting leads, a die pad and support leads is provided. A semiconductor chip is bonded to the die pad with an adhesive. The semiconductor chip, electrode pads and the signal-connecting leads are electrically connected to e...
06/27/2000
6072230Exposed leadframe for semiconductor packages and bend forming method of fabrication
The invention relates to a single piece leadframe that can be used in current semiconductor device production. The leadframe has a plurality of segments in a horizontal plane, a chip mount pad in a different horizontal plane, and another plurality of segm...
06/06/2000
6008528Semiconductor lead frame with channel beam tie bar
The invention is a lead frame (30) with tie bars (32-35) having reenforcing channels (44, 53, 64) extending at least a portion of the length of the tie bar. The lead frame (30) and channels (44, 53, 64) in the tie bars (32-35) may be formed either by stam...
12/28/1999
5889318Lead frame including angle iron tie bar and method of making the same
A lead frame and method of making the same are provided. The lead frame includes a die mounting portion, first and second pairs of tie bars, and first and second tie bar bridges extending between respective second extension portions of each tie bar pair. ...
03/30/1999
5637915Semiconductor device affixed to an upper and a lower leadframe
A semiconductor device includes a semiconductor chip having top and bottom surfaces, upper leads electrically coupled to the semiconductor chip, where a first gap is formed between the upper leads and the top surface of the semiconductor chip, lower leads...
06/10/1997
5409866Process for manufacturing a semiconductor device affixed to an upper and a lower leadframe
A process for manufacturing semiconductor device including a semiconductor chip having top and bottom surfaces, upper leads electrically coupled to the semiconductor chip, where a first gap is formed between the upper leads and the top surface of the semi...
04/25/1995
5304818Lead frame
A lead frame, used for constructing a multi-core optical module or the like, includes a frame portion, a plurality of substrate portions on which electronic circuit elements are to be mounted, and a support portion for securing the plurality of substrate ...
04/19/1994
5250839Multi-layer leadframes, electrically conductive plates used therefor and production of such conductive plates
A multi-layer leadframe according to this invention is formed by laminating on a leadframe body an insulating layer and an electrically conductive layer in this order. The electrically conductive plate includes a planar portion and a given number of termi...
10/05/1993
5126820Thermal expansion compensated metal lead frame for integrated circuit package
A metal lead frame for an integrated circuit package is disclosed having stress relieving means formed therein to inhibit breakage of a thermally mismatched silicon die subsequently attached thereto and then heated during normal operation of the device. T...
06/30/1992
5121300Lead frame and electronic device employing the same
A lead frame and an electronic device incorporating the lead frame wherein the lead frame includes a chip support and a plurality of leads arranged around the chip support with each of the plurality of leads having one end disposed proximate to the chip s...
06/09/1992
5043791Electrical device having improved lead frame and thermally stable connection arrangement and method
An electrical component/housing has a main body with a geometric central point and a lead frame having a plurality of leads formed of flat sheet stock. An intermediate flexible planar portion of each lead extends between emerging and end portions of each ...
08/27/1991
4918511Thermal expansion compensated metal lead frame for integrated circuit package
A metal lead frame for an integrated circuit package is disclosed having stress relieving means formed therein to inhibit breakage of a thermally mismatched silicon die subsequently attached thereto and then heated during normal operation of the device. T...
04/17/1990
4907129Lead frame and electronic divice
A lead frame and an electronic device incorporating the lead frame wherein the lead frame includes a chip support and a plurality of leads arranged around the chip support with each of the plurality of leads having one end disposed proximate to the chip s...
03/06/1990
4870474Lead frame
A lead frame composed of an outer frame and inner lead frame portions formed as an integral frame wherein each lead frame portion directly joins the outer frame at some of the four corners of the lead frame portion with circuitous bridges interposed for f...
09/26/1989
4803540Semiconductor integrated circuit packages
A lead frame for mounting a semiconductor chip in an integrated circuit package incorporates a deformation absorbing member as an integral part of the paddle support arm so that the initial, desired physical and electrical characteristics are unaltered af...
02/07/1989
4797726Lead frame including deformable plates
A lead frame for a semiconductor chip has a plurality of supporting plates connecting to each other by a plurality of readily deformable plates so that a predetermined gap exists between adjacent supporting plates. When the semiconductor chip and the supp...
01/10/1989
4797787Lead frame and electronic device
A lead frame and an electronic device incorporating the lead frame wherein the lead frame includes a chip support and a plurality of leads arranged around the chip support with each of the plurality of leads having one end disposed proximate to the chip s...
01/10/1989
4791472Lead frame and semiconductor device using the same
A resin encapsulated type semiconductor device is manufactured by using a lead frame in which a stress relaxation portion is formed near the connection portion between the tab suspending the lead and the tab according to this invention, whereby stress con...
12/13/1988
4743956Offset bending of curvaceously planar radiating leadframe leads in semiconductor chip packaging
A method of forming leadframes for use in manufacturing semiconductor chips starts with fabricating a plurality of leadframes by metal stamping or etching leadframe patterns into a flat ribbon of conductive material. The leadframe patterns include a plura...
05/10/1988
4400714Lead frame for semiconductor chip
A lead frame is provided which allows for the lengthening of leads caused by the bonding of the lead tips to a ceramic substrate, without causing the lead frame to deform in a vertical direction. The lead frame comprises a generally flat but relatively ri...
08/23/1983
4326215Encapsulated semiconductor device with a metallic base plate
A semiconductor device comprising a metallic base plate whose side surfaces are formed with cut-away portions having circular arc-shaped parts, a semiconductor element which is connected to the surface of the metallic base plate, and a resin which lies in...
04/20/1982
 
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