摘要:
A method of electrically interconnecting a semiconductor chip to another electronic device including providing a carrier including contact pins and a chip attached to the carrier, the chip having a copper contact pad that faces away from the carrier, extending a copper electrical connector between the contact pins and the contact pad, and diffusion soldering the copper electrical connector to the active area with a solder material including tin to form a solder connection including a contiguous bronze coating disposed between and in direct contact with both the copper electrical connector and the contact pad.
摘要:
The invention relates to an ultrathin semiconductor circuit having contact bumps and to a corresponding production method. The semiconductor circuit includes a bump supporting layer having a supporting layer thickness and having a supporting layer opening for uncovering a contact layer element being formed on the surface of a semiconductor circuit. An electrode layer is situated on the surface of the contact layer element within the opening of the bump supporting layer, on which electrode layer is formed a bump metallization for realizing the contact bump. On account of the bump supporting layer, a thickness of the semiconductor circuit can be thinned to well below 300 micrometers, with the wafer reliably being prevented from breaking. Furthermore, the moisture barrier properties of the semiconductor circuit are thereby improved.
摘要:
A bonding head includes a pressure plate to press a component (e.g., a semiconductor chip) onto a substrate. The pressure plate includes a holding surface configured to hold the component and to allow the component to be pressed uniformly onto the substrate, thus allowing a particularly reliable connection. The bonding head can further include an apparatus configured to vary the curvature of the holding surface of the pressure plate.
摘要:
A method and a device for treating wafers on assembly carriers is disclosed. A wafer to be treated can be fixed on a liquid film that is located between the front side of the wafer and the assembly carrier by freezing of the film.
摘要:
A bonding head includes a pressure plate to press a component (e.g., a semiconductor chip) onto a substrate. The pressure plate includes a holding surface configured to hold the component and to allow the component to be pressed uniformly onto the substrate, thus allowing a particularly reliable connection. The bonding head can further include an apparatus configured to vary the curvature of the holding surface of the pressure plate.
摘要:
A method for producing metal layers on surfaces of semiconductor substrates includes the step of providing a semiconductor substrate having a surface. In this case, a precursor compound of a metal to be deposited is condensed out on the semiconductor surface and subsequently decomposed thermally. The method makes it possible to fill trenches with a high aspect ratio, it being possible to effectively suppress the formation of voids.
摘要:
A machining apparatus (10) comprises a material removing tool (12) movably mounted for removing material from a workpiece (14); means for illuminating (42, 54) a sample area upon a tool surface (34) with excitation radiation; means for receiving (42, 54) sample light emitted from the sample area; a spectral analyzer (54) for performing a spectral analysis of the sample light received; and means for determining (60) the condition of the tool at the sample area from the spectral analysis of the sample light. The wear of the tool (12) is determined as such a condition. Operation parameters of the machining apparatus (10) are adjusted according to the determined wear. An example application is a wafer dicing tool.
摘要:
A semiconductor body with a layer of solder material and a method for soldering the semiconductor body include a chromium layer applied to a rear side of the semiconductor body, and a tin layer applied to the chromium layer. The semiconductor is subsequently soldered directly to the metal substrate, that is without further additives, by being heated to temperatures above 250° C. This metal layer system for soldering power semiconductors to cooling bodies enables two metal layers to be dispensed with as compared with known four metal layer systems.
摘要:
A device for treating wafers on assembly carriers is disclosed. A wafer to be treated can be fixed on a liquid film that is located between the front side of the wafer and the assembly carrier by freezing of the film.
摘要:
A wiring structure for a semiconductor device includes a multilayer metallization having a total thickness of at least 5 μm and an interlayer disposed in the multilayer metallization with a first side of the interlayer adjoining one layer of the multilayer metallization and a second opposing side of the interlayer adjoining a different layer of the multilayer metallization. The interlayer includes at least one of W, WTi, Ta, TaN, TiW, and TiN or other suitable compound metal or a metal silicide such as WSi, MoSi, TiSi, and TaSi.