Patent classifications
B24B37/245
Integrated abrasive polishing pads and manufacturing methods
Embodiments described herein relate to integrated abrasive (IA) polishing pads, and methods of manufacturing IA polishing pads using, at least in part, surface functionalized abrasive particles in an additive manufacturing process, such as a 3D inkjet printing process. In one embodiment, a method of forming a polishing article includes dispensing a first plurality of droplets of a first precursor, curing the first plurality of droplets to form a first layer comprising a portion of a sub-polishing element, dispensing a second plurality of droplets of the first precursor and a second precursor onto the first layer, and curing the second plurality of droplets to form a second layer comprising portions of the sub-polishing element and portions of a plurality of polishing elements. Here, the second precursor includes functionalized abrasive particles having a polymerizable group chemically bonded to surfaces thereof.
Processing apparatus
There is provided a processing apparatus that polishes the back surface side of a wafer on which devices are formed on the front surface side. The processing apparatus includes a chuck table that holds the wafer and rotates and a polishing unit that forms scratches on the back surface side of the wafer while polishing the back surface side of the wafer. The processing apparatus includes also a scratch determining unit that determines whether or not the scratches exist on the back surface side of the wafer polished by the polishing unit and an informing unit that informs that a region in which the scratches do not exist is included in the wafer when a region for which it has been determined that the scratches do not exist by the scratch determining unit is included in the wafer.
POLISHING SOLUTIONS AND METHODS OF USING SAME
A polishing solution includes a fluid component and a plurality of conditioning particles. The fluid component includes water, a basic pH adjusting agent, and a polymeric thickening agent. The polymeric thickening agent is present in the fluid component at greater than 0.01 weight percent based on the total weight of the polishing solution.
POLISHING LIQUID
Provided is a polishing liquid that is used when one surface of a wafer is polished by use of a fixed abrasive grain polishing pad with abrasive grains fixed in the pad, in which an organic salt that exhibits a basic property by hydrolysis and contains no metal and an organic base that contains no metal are dissolved, and no abrasive grains are contained. Preferably, the organic salt includes a strong basic cation and a weak acidic anion, and the organic base contains at least one of ammonia, an amine, and a basic amino acid.
POLISHING TOOL AND POLISHING METHOD FOR MEMBER HAVING CURVED SURFACE SHAPE
A polishing method capable of removing waviness on a resin-coated surface having a curved surface is provided. The resin-coated surface having the curved surface is polished by using a polishing pad having a polishing surface formed of a hard resin layer.
POLISHING PAD
A polishing pad capable of removing waviness of a surface of a polishing target having a curved surface is provided. A polishing pad (10) includes a structure (40, 50) including a polishing surface (30) formed of a hard resin layer (40), the structure (40, 50) allowing the polishing surface (30) to follow a curved surface of a polishing target (90).
POLISHING MATERIAL AND POLISHING METHOD
A polishing material which controls a polishing rate of a silicon surface is provided. A polishing material including abrasive grains and a compound represented by a Formula (1).
R—O-(AO).sub.m—H Formula (1)
In the Formula (1), R is an organic group including a conjugated system and may include a heteroatom in a carbon skeleton, and C1/(C1+C2)≥0.4 holds, where C1 is the number of atoms constituting the conjugated system and C2 is the number of atoms not constituting the conjugated system among atoms constituting the carbon skeleton,
AO represents an oxyalkylene group, and a plurality of the AOs may be the same as or different from each other, and
n is an integer of 2 to 200.
ABRASIVE POWDERS IN SOFT MATRICES
The invention is an abrasive article for sharpening cutting blades mounted within a grinding apparatus. The article is a soft matrix in which are embedded abrasive particles, and this matrix is preferably encased within a dry and non-adherent shell or capsule. The article is capable of being fed into the apparatus, wherein it is crushed, leaving the abrasive particles free to contact and sharpen the blades by abrasion.
TEXTURED GLASS-BASED ARTICLES WITH MULTIPLE HAZE LEVELS AND PROCESSES OF PRODUCING THE SAME
A textured glass-based article with multiple haze levels is provided. The textured glass-based articles are produced by utilizing a combination of etching and mechanical polishing to produce the multiple haze levels.
SYNTHETIC GRINDSTONE
A synthetic grindstone (100) for chemo-mechanical grinding a wafer W, comprising: an abrasive grain (101) having a chemo-mechanical grinding action on the wafer W and having a particle diameter of less than 5 μm; a spherical filler (102) formed of a material as hard as or softer than the wafer W and having a particle diameter larger than that of the abrasive grain (101); and a resin binder (103) that integrally binds the abrasive grain (101) and the spherical filler (102).