摘要:
Eine Leistungselektronikschaltung (L) ist mit einem Träger (1+2a +2b) ausgestattet, der eine Oberfläche (O) aufweist. Auf dem Träger (1+2a+2b) ist mindestens ein Leistungsbauteil (4) (insbesondere ein Halbleiterbauteil, das beispielsweise als gehäuster oder ungehäuster Chip vorliegt) mittels einer durchgehenden Lotschicht (3) aufgelötet. Die Lotschicht (3) weist Abstandspartikel (3a) und Lotmasse (3b) auf. Die Abstandspartikel (3a) sind in der Lotmasse (3b) verteilt. Die Lotschicht (3) weist eine Dicke auf, die mindestens 100 μm beträgt. Durch die Dicke werden die Schubspannungen in der Lotschicht (3) verringert, die durch unterschiedliche Temperaturausdehnung des Trägers (1+2a+2b) und des Leistungsbauteils (4) entstehen. Es ergibt sich eine geringere Beanspruchung bei Temperaturwechseln im Vergleich zu dünneren Lotschichten, wodurch die Zuverlässigkeit der Lotverbindung erhöht ist. Insbesondere bei einer kaltgasgespritzen Oberfläche (O) ergibt sich eine relativ hohe Rauigkeit, so dass eine Dicke der Lotschicht (3) von mindestens 100 µm zu einem Höhenaufbau führt, der sich positiv zu Gunsten der Lebensdauer auswirkt.
摘要:
A method of and system (200) for manufacturing an electronic device (300, 300'), a curable conductive adhesive for use in the same, and an electronic device (300, 300') are disclosed. The method includes printing a conductive adhesive onto pads at ends of traces on a substrate (310, 360), placing one or more components (320, 340, 340', 350, 355) having a non-standard size and/or shape (e.g. circular, oval or rectangular with rounded corners) onto the pads with the conductive adhesive thereon, and after the component(s) (320, 340, 340', 350, 355) have been placed onto the pads, curing the conductive adhesive at a predetermined temperature or with light having a predetermined wavelength (band). The one or more components (320, 340, 340', 350, 355) having a non-standard size and/or shape may be an antenna (320), a sensor (340, 340') and/or a display (350, 355). The electronic device (300, 300') may further comprise one or more additional components (330, 335, 370) having a standard size and/or shape on a second subset of the pads. The additional components (330, 335, 370) may be an integrated circuit (330, 335) and/or a battery (370). The system (200) comprises a printer (220) configured to print a conductive adhesive onto pads at ends of traces on a substrate, a surface mounting (SMT) machine (230) configured to place one or more components (320, 340, 340', 350, 355) having a non-standard size and/or shape onto the pads with the conductive adhesive thereon, and a curing station configured to cure the conductive adhesive after the component(s) (320, 340, 340', 350, 355) have been placed onto the pads. The SMT machine (230) may include a nozzle head having a surface with a shape identical to or configured to match a shape of the component (320, 340, 340', 350, 355) it picks up.
摘要:
An anisotropic conductive film (ACF), a bonding structure, and a display panel, and their fabrication methods are provided. The ACF includes a resin gel (122) and a plurality of conductive particles (125) dispersed in the resin gel (122). The plurality of conductive particles (125) is aligned and connected, in response to an electric field, to form a conduction path in the resin gel (122). The bonding structure includes the anisotropic conductive film (ACF) sandwiched between first and second substrates (110, 130). The display panel includes the bonding structure.
摘要:
본 발명은 바인더부, 경화부, 경화제, 도전성 입자, 및 한센 용해도 파라미터(Hansen Solubility Parameter)가 17 내지 20인 용매를 포함하는 이방 도전성 필름용 조성물, 이방 도전성 필름 및 상기 필름에 의해 접속된 반도체 장치에 관한 것이다.
摘要:
A conductive particle comprising: a core particle having an electrical conductivity; and a insulating coating provided on the surface of the core particle and comprising an organic polymeric compound, wherein the conductive particle has a coverage ratio as defined by the formula (1) of 20 to 40%.
摘要:
A semiconductor device has a first and a second semiconductor chip (14, 16). On the surface of the first semiconductor chip (14), a plurality of first electrodes are formed. On the surface of the second semiconductor chip (16), a plurality of second electrodes are formed. By placing the first and the second semiconductor chip (14, 16) so that their surfaces may face each other, the first electrodes and the second electrodes are connected to each other. On the surface of each of the semiconductor chips (14, 16), circuit elements are also formed and these circuit elements mounted on the first and the second semiconductor chip (14, 16) are covered by the second and the first semiconductor chip (16, 14) respectively. The connections of the first and the second semiconductor chip (14, 16) are sealed in a package (26) by synthetic resin which has an excellent moistureproof property, and the entire bodies of the first and the second semiconductor chip (14, 16) are airtightly sealed in a package (22) by the second synthetic resin.