摘要:
A manufacturing method for semiconductor devices includes a process of forming a conductive layer 4 on the other principle surface of a semiconductor wafer 10 having circuit elements 2 formed in one principle surface of the semiconductor wafer, a process of forming a protecting layer 5 on at least a part of the conductive layer, the protecting layer 5 being made from material having hard-to-shave characteristics in comparison with the conductive layer and a process of cutting the semiconductor wafer 10 into pieces with respect to each of the semiconductor devices 1. By the manufacturing method, each semiconductor device 1 is provided with a semiconductor substrate 3 having the circuit elements 2 formed in one principle surface of the semiconductor substrate 3, the conductive layer 4 formed on the other principle surface of the semiconductor substrate 3 and the protecting layer 5 formed on the conductive layer 4 in lamination to have hard-to-shave characteristics in comparison with the conductive layer 4.
摘要:
According to a method of manufacturing a semiconductor wafer and a semiconductor device, a rear surface of the semiconductor wafer is ground, and is dry—or wet—etched so that rear surfaces of semiconductor chips on the segmented semiconductor wafer have substantially equal surface roughness. The semiconductor chips are bonded onto a lead frame via bumps using thermo-compression and ultrasonic vibrations.
摘要:
According to a method of manufacturing a semiconductor wafer and a semiconductor device, a rear surface of the semiconductor wafer is ground, and is dry- or wet-etched so that rear surfaces of semiconductor chips on the segmented semiconductor wafer have substantially equal surface roughness. The semiconductor chips are bonded onto a lead frame via bumps using thermo-compression and ultrasonic vibrations.
摘要:
According one aspect of the invention, there is provided a mobile apparatus including: a main face; a back face opposite to the main face, the back face being printed with visible user information; a thickness from the main face to the back face; an antenna disposed at a position nearer the back face than the main face; and an attachment portion attachable with a wearing tool, the wearing tool allowing a user to wear the mobile apparatus.
摘要:
An optical semiconductor device includes: a base substrate which has a concave portion; a light-emitting element which is provided in the concave portion, and which emits light; a prevention member which is provided to the base substrate in a manner of covering a side surface of the concave portion, and which prevents the light emitted by the light-emitting element from being incident on the side surface of the concave portion; and a translucent member which is provided in the concave portion, and which seals the light-emitting element.
摘要:
Three chips, i.e., an LED, photovoltaic IC, and MOS-FET, are mounted on a silicon substrate having two projections arranged substantially parallel to each other. Each projection has a side surface formed by an inclined surface including a curve having an inflection point. The LED is mounted on an LED mounting electrode formed between the two projections, and connected, by a gold wire, to an LED connecting electrode formed between the projections. The photovoltaic IC is placed on the front-side surfaces of the projections so as to oppose the LED, and connected via gold bumps.
摘要:
The present invention provides a battery including a container, an electrode group including a positive electrode and a negative electrode, multiple current collecting tabs being extended from any one of the positive electrode and the negative electrode of the electrode group, and overlapped with one another; a lead bonded to at least one of the current collecting tabs by ultrasonic bonding, a lid configured to close an opening portion of the container, and an external terminal provided on the lid and connected to the at least one current collecting tab via the lead, in which the lead has a cross-sectional area that is increased in a middle of extension of the lead from an ultrasonic-bonded portion to the at least one of the current collecting tabs to the external terminal.
摘要:
Three chips, i.e., an LED, photovoltaic IC, and MOS-FET, are mounted on a silicon substrate having two projections arranged substantially parallel to each other. Each projection has a side surface formed by an inclined surface including a curve having an inflection point. The LED is mounted on an LED mounting electrode formed between the two projections, and connected, by a gold wire, to an LED connecting electrode formed between the projections. The photovoltaic IC is placed on the front-side surfaces of the projections so as to oppose the LED, and connected via gold bumps.