Abstract:
Bei einem Verfahren zum Vereinzeln von Wafern (12) von einem vertikalen Waferstapel (16) werden die Wafer (12) einzeln von oben her wegtransportiert über von oben angreifende Bewegungsmittel (23). Die Bewegungsmittel (23) sind als umlaufende Bänder (24) ausgebildet mit einer Ansaugoberfläche (25), an der der oberste Wafer (12) angelegt wird, wobei durch Unterdruck bzw. Saugen die Anlage des Wafers (12) an der Ansaugoberfläche (25) verstärkt wird. Zum Separieren mehrerer aufeinanderliegender Wafer (12) wird an den Bewegungsmitteln (23) mindestens einer der beiden Schritte durchgeführt: a) Wasser (30) wird von schräg unterhalb des obersten Wafers (12) gegen seine Vorderkante verstärkt gestrahlt b) die Bewegungsmittel (23) führen den Wafer (12) über eine Abstreifeinrichtung (32), die von unten an der Unterseite des bewegten Wafers (12) anliegt und sowohl den Wafer (12) gegen die Ansaugoberfläche (25) drückt als auch eine Bremswirkung daran erzeugt. Danach wird der Wafer (12) auf eine Transportbahn (35, 37) gebracht zum Weitertransport für eine weitere Bearbeitung.
Abstract:
A system for dicing substrates to singulate integrated circuit units within in them includes a dicing machine (Z) which operates with a chuck table (4). A lifting assembly (Ax,Ay) deposits substrates to be singulated onto the chuck table (4) at substantially the same time as it removes previously singulated units from the chuck table (4).
Abstract:
An apparatus for separating a front wafer from a stack of wafers with internal gaps between the wafers is disclosed. The apparatus includes a chuck for gripping the front wafer, coupled to a mechanical arm and a drive for moving the arm to bring the chuck to the front wafer and to separate the wafer from the stack of wafers. Further included is a heater for heating the front wafer so as to raise the temperature within the internal gap between the front wafer and the adjacent wafer of the stack of wafers above the temperature of more distant internal gaps within the stack.
Abstract:
The invention discloses a unit lifter assembly for lifting singulated integrated circuits singulated from a semiconductor substrate including a plurality of rows of unit lifters and a plurality of actuating means, each operatively engaged to at least one unit lifter, wherein each actuating means is arranged staggered one after another so that a pitch from one actuating means to another is minimised.
Abstract:
A vacuum chuck having a planar upper surface for holding a planar substrate for dicing using a dicing saw comprising a vacuum surface and a light source for illuminating at least an area of said substrate from below.
Abstract:
The invention relates to a method for isolating and detaching thin, fragile, plate-like substrates (11). Said plate-like substrates (11) are cut from a substrate block (13), which is preferably mounted on a baseplate (12) by means of adhesive, are gripped at evenly distributed points on the free outer surface thereof (16) and are displaced in an oscillating manner, such that the plate-like substrates (11) are automatically and individually removed free of damage from the sawn substrate block and from the layer of adhesive.
Abstract:
A method and apparatus are described for cleaving a relatively thin semiconductor wafer for inspecting a target feature on a workface thereof by: producing, on a first lateral face of the semiconductor wafer, laterally of the workface on one side of the target feature, an indentation in alignment with the target feature; and inducing, e.g., by impact, in a second lateral face of the semiconductor wafer, laterally of the workface on the opposite side of the target feature, a shock wave substantially in alignment with the target feature and the indentation on the first lateral face, to split the semiconductor wafer along a cleavage plane essentially coinciding with the target feature and the indentation.
Abstract:
A cleaving system is described. The system can include a holding apparatus to retain a photovoltaic structure at a center section of a cleaving platform. The system can further include a contact apparatus to make contact with the photovoltaic structure and separate it into a plurality of strips. During operation, the system can activate an actuator to move the contact apparatus against the photovoltaic structure, thereby separating the photovoltaic structure into strips.
Abstract:
The present invention relates to a net block assembly in a system for positioning singulated integrated circuits, having a net block surface partially covered by a two dimensional array of first (12) and second elements (14), each first element (12) having an aperture provided with vacuum adapted to receive an integrated circuit and each second element (14) projecting from the surface said net block assembly including a plurality of rows of first (12) and second element (14) arranged in a chequer pattern, wherein the number of elements in the row is an odd number and a buffer row (16) in the array having two first elements (12) arranged adjacent to each other, wherein the number of elements in the buffer row (16) is an odd number.