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Class Information
Number: 257/666
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Lead frame
Description: Subject matter wherein the active solid-state device is provided with a conductive metal network which may have relatively large area portions, commonly called pads or flags, for direct contact with semiconductor chips or dice, and lead elements for facilitating electrical interconnection of the chips or dies via intermediate (e.g., jumper) connections to other electronic devices or components.


Sub-classes under this class:

Class Number Class Name Patents
257/677 Of specified material other than copper (e.g., kovar (t.m.)) 190
257/668 On insulating carrier other than a printed circuit board 956
257/672 Small lead frame (e.g., "spider" frame) for connecting a large lead frame to a semiconductor chip 322
257/673 With bumps on ends of lead fingers to connect to semiconductor 410
257/667 With dam or vent for encapsulant 341
257/675 With heat sink means 589
257/674 With means for controlling lead tension 263
257/670 With separate tie bar element or plural tie bars 362
257/669 With stress relief 459
257/676 With structure for mounting semiconductor chip to lead frame (e.g., configuration of die bonding flag, absence of a die bonding flag, recess for led) 1,543


Patents under this class:

Patent Number Title Of Patent Date Issued
7459770 Lead frame structure having blocking surfaces and semiconductor package integrated with the lead frame structure Dec. 2, 2008
7459381 Integrated circuits and interconnect structure for integrated circuits Dec. 2, 2008
7459345 Packaging method for an electronic element Dec. 2, 2008
7453138 Electronic circuit device and manufacturing method thereof Nov. 18, 2008
7449412 Interconnect circuitry, multichip module, and methods of manufacturing thereof Nov. 11, 2008
7446400 Chip package structure and fabricating method thereof Nov. 4, 2008
7446396 Stacked integrated circuit leadframe package system Nov. 4, 2008
7443013 Flexible substrate for package of die Oct. 28, 2008
7443011 System and method for routing supply voltages or other signals between side-by-side die and a lead frame for system in a package (SIP) devices Oct. 28, 2008
7439610 High power shunt switch with high isolation and ease of assembly Oct. 21, 2008
7436049 Lead frame, semiconductor chip package using the lead frame, and method of manufacturing the semiconductor chip package Oct. 14, 2008
7436048 Multichip leadframe package Oct. 14, 2008
7436002 Surface-mountable radiation-emitting component Oct. 14, 2008
7432588 Semiconductor device and method of fabricating the same Oct. 7, 2008
7432584 Leadframe for use in a semiconductor package Oct. 7, 2008
7432583 Leadless leadframe package substitute and stack package Oct. 7, 2008
7429784 Package structure Sep. 30, 2008
7425755 Semiconductor package, method for manufacturing the same and lead frame for use in the same Sep. 16, 2008
7420265 Integrated circuit package system with integrated circuit support Sep. 2, 2008
7417309 Circuit device and portable device with symmetrical arrangement Aug. 26, 2008
7414303 Lead on chip semiconductor package Aug. 19, 2008
7414302 Flashless lead frame with horizontal singulation Aug. 19, 2008
7414300 Molded semiconductor package Aug. 19, 2008
7413934 Leadframes for improved moisture reliability and enhanced solderability of semiconductor devices Aug. 19, 2008
7411278 Package device with electromagnetic interference shield Aug. 12, 2008
7408251 Semiconductor packaging device comprising a semiconductor chip including a MOSFET Aug. 5, 2008
7408248 Lead frame for semiconductor device Aug. 5, 2008
7408245 IC package encapsulating a chip under asymmetric single-side leads Aug. 5, 2008
7408244 Semiconductor package and stack arrangement thereof Aug. 5, 2008
7408243 High temperature package flip-chip bonding to ceramic Aug. 5, 2008
7408242 Carrier with reinforced leads that are to be connected to a chip Aug. 5, 2008
7408205 Digital camera module Aug. 5, 2008
7405487 Method and apparatus for removing encapsulating material from a packaged microelectronic device Jul. 29, 2008
7405483 Electronic assembly and circuit board Jul. 29, 2008
7402898 Semiconductor package, method for fabricating the same, and semiconductor device Jul. 22, 2008
7402896 Integrated circuit (IC) carrier assembly incorporating serpentine suspension Jul. 22, 2008
7402462 Folded frame carrier for MOSFET BGA Jul. 22, 2008
7399658 Pre-molded leadframe and method therefor Jul. 15, 2008
7397137 Direct FET device for high frequency application Jul. 8, 2008
7397114 Semiconductor integrated circuit device and method of manufacturing the same Jul. 8, 2008
7397113 Semiconductor device Jul. 8, 2008
7397112 Semiconductor package and lead frame therefor Jul. 8, 2008
7391100 Integrated circuit package for semiconductor devices having a reduced leadframe pad and an increased bonding area Jun. 24, 2008
7388283 Method and device for integrating an illumination source and detector into the same IC package that allows angular illumination with a common planar leadframe Jun. 17, 2008
7388280 Package stacking lead frame system Jun. 17, 2008
7385279 Semiconductor device and a method of manufacturing the same Jun. 10, 2008
7385278 Strobe light control circuit and IGBT device Jun. 10, 2008
7378743 Circuit board and electronic assembly May. 27, 2008
7378723 Method and apparatus for decoupling conductive portions of a microelectronic device package May. 27, 2008
7378722 Adhesive film for semiconductor, lead frame and semiconductor device using the same, and method of producing semiconductor device May. 27, 2008



 
 
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