Abstract:
A wafer (20) having a front surface and contacts (28) exposed at the front surface is treated by forming electrically conductive risers (30) projecting upwardly from the contacts as, for example, by electroless plating, and then applying a flowable material over the front surface of the device, around the risers, to form a dielectric layer (36) with the risers exposed at a top surface (38) of the dielectric layer facing away from the device. Traces (42). extending over the top surface of the dielectric layer may be formed, and may be connected to at least some of the risers.
Abstract:
A flip chip mounting method and a method for connecting substrates, which are applicable to next generation LSI flip chip mounting and have high productivity and reliability. A circuit board (21) having a plurality of connecting terminals (11) and a semiconductor chip (20) having a plurality of electrode terminals (12) are arranged to face each other, and a resin (13) containing conductive particles (12) and an air bubble generating agent is supplied to a space between the circuit board and the semiconductor chip. In such state, the resin (13) is heated, air bubbles (30) are generated from the air bubble generating agent contained in the resin (13), and the resin (13) is pushed to the outside of the air bubbles (30) by growth of the generated air bubbles (30). The pushed out resin (13) are self-collected between the circuit board (10) and the terminals of the semiconductor chip (20) in a column shape. In such state, by pressing the semiconductor chip (20) to the circuit board (10), the conductive particles (12) contained in the self-collected resin (13) between the facing terminals are brought into mutual contact, and the terminals are electrically connected.
Abstract:
An apparatus incorporating small-feature size and large-feature-size components. The apparatus comprise a strap including a substrate with an integrated circuit contained therein. The integrated circuit coupling to a first conductor disposed on the substrate. The first conductor is made of a thermosetting or a thermoplastic material including conductive fillers. A large-scale component having a second conductor is electrically coupled to the first conductor to electrically couple the large-scale component to the integrated circuit. The large-scale component includes a second substrate.
Abstract:
Methods and structures of in-situ wafer scale polymer stud grid array (ISWS-PSGA) contact formation on integrated circuit devices (10), wherein a separate pre-manufactured PSGA substrate is not needed. The methods include injection molding of thermoplastics, transfer-molding of thermoset materials, lamination of polymer films with subsequent in-situ molding/embossing, and forming the PSGA structure directly on the semiconductor wafer (5). The ISWS-PSGA structure extends across the entire semiconductor wafer (5), with ISWS-PSGA metallized input/output studs (121) disposed across each of the integrated circuit devices on the wafer (5). The polymer (36) formed on the wafer (5) surface to create the stud field is extended beyond the perimeter of the wafer (5), and the polymer film extension is used for temporary connection to an integrated circuit tester, or an integrated circuit test/burn-in system. The extension may further include studs for contacting the tester.
Abstract:
Methods and structures of in-situ wafer scale polymer stud grid array (ISWS-PSGA) contact formation on integrated circuit devices (10), wherein a separate pre-manufactured PSGA substrate is not needed. The methods include injection molding of thermoplastics, transfer-molding of thermoset materials, lamination of polymer films with subsequent in-situ molding/embossing, and forming the PSGA structure directly on the semiconductor wafer (5). The ISWS-PSGA structure extends across the entire semiconductor wafer (5), with ISWS-PSGA metallized input/output studs (121) disposed across each of the integrated circuit devices on the wafer (5). The polymer (36) formed on the wafer (5) surface to create the stud field is extended beyond the perimeter of the wafer (5), and the polymer film extension is used for temporary connection to an integrated circuit tester, or an integrated circuit test/burn-in system. The extension may further include studs for contacting the tester.
Abstract:
The invention provides processes for bonding a flip chip (1) to a substrate (3) in a manner that maximizes reliability of the bonding operation. Electrically conductive polymer bumps (2) are formed on bond pads (4) of a flip chip (1) and the flip chip polymer bumps (2) are at least partially hardened. Electrically conductive polymer bumps (8) are formed on bond pads (4) of a substrate, and a layer of electrically insulating adhesive paste (5) is then applied on the substrate (3), covering the substrate polymer bumps (8) with the adhesive (5). The bond pads (6) of the flip chip () are then aligned with the bond pads (4) of the substrate (3) and the at least partially hardened flip chip polymer bumps (2) are then pushed through the substrate adhesive (5) and at least partially into the substrate polymer bumps (8). In a further method, electrically conductive polymer bumps (2) are formed on bond pads (6) of a flip chip (1) and the flip chip polymer bumps (2) are at least partially hardened. A layer of electrically insulating adhesive paste (5) is formed on a substrate having bond pads (4), covering the bond pads (4) with the adhesive (5). The bond pads (6) of the flip chip (1) are aligned with the bond pads (4) of the substrate (3), and then the at least partially hardened flip chip polymer bumps (2) are pushed through the substrate adhesive (5) with pressure sufficient for the flip chip polymer bumps (2) to directly contact and deform the substrate bond pads (4).
Abstract:
The invention relates to an electronic component (2) and a method for the production thereof. The electronic component (2) comprises an electric circuit and a rubber elastic elevation (3). The rubber elastic elevation (3) is made from an insulating rubber elastic material and is arranged on the surface (13) of the electric component (2), having an electric bonding pad (16) on the tip (14) thereof. The rubber elastic elevation (3) also comprises a line path (8) disposed on the sloping side or in the volume thereof between the bonding pad (16) and the electronic circuit.