CORWIL | Wafer Thinning & Dicing

By: Corwil  09-12-2011
Keywords: Dice, Wafer, Bumped Wafers

Wafer Thinning & Polishing

CORWIL specializes in ultra-thin precision wafer thinning and polishing down to 25 microns. CORWIL routinely handles bumped wafers of wide-ranging bump heights and pitches and stocks a diverse assortment of front side tapes to provide the best protection for your wafers during processing.

Wafer grinding can create significant subsurface damage which can cause wafer damage when grinding is used to make wafers very thin, e.g. < 100 microns. CORWIL's dry polishing service removes much of the subsurface damage to enable safer die handling and yields.

Wafer Dicing

Fully Automatic World Class Disco Wafer Dicing systems handle wafers ranging from fragments to 300mm diameter. Wafer cleanliness is maintained with surfactant injected into the DI water system and ESD is eliminated with CO2 bubblers and anti-static ionized work stations. Our experienced operators can take your multiple die type wafers with complex dicing patterns and save all dice or sacrifice some to retrieve the most important.

At CORWIL, no two customer products are alike and each product wafer will be diced with specially customized program parameters to minimize yield loss. Our narrowest cut line can be as low as 15 ┬Ám. CORWIL's engineering research has isolated 40 root causes of die chipping, which causes low die strength and poor yields. CORWIL's ability to dice with parameters optimized to each individual customer's device has led to CORWIL's success and technical leadership in the industry for chip-free, high-volume wafer dicing.

  • Dice Before Grind (DBG)

    CORWIL has developed proprietary techniques to allow for the safe singulation of IC devices from a wafer that has been ground very thin (as thin as 25 microns). The DBG process is principally used for singulating IC die when normal sawing would create unacceptable levels of chipping and edge damage.

  • Die Attach Film (DAF)

    CORWIL is one of the first companies to adopt Die Attach Film (DAF) in its wafer/die singulation process. This allows dice to be die-attached directly onto the leadframe or substrate without epoxy adhesive dispense. CORWIL also has a die chipping monitor which can be implemented to monitor yield on a real time basis. These and many other processes are available to reduce manufacturing cost and yield loss for customers.

  • Materials

    Materials processed at CORWIL include Silicon, GaAs, Sapphire, Quartz, SiGE, Laminates, Piezoelectric, Glass, and other materials.

Die Preparation

CORWIL's Die Preparation Services include:

  • Pick & Place

    • Automatic pick and place is available to place dice in:
      • Waffle packs
      • Tape and Reel (paper or Surf tape)
      • GelPack
    • Manual pick and place is available for:
      • Die-sensitive
      • Topside handling
      • Unpassivated
      • MEMs
      • Ultra-clean processing of optical or image chips
      • Die picking from wafer maps
    • Individual die I.D. recording is available
  • Die Inspection

    CORWIL offers automated and manual visual inspections to commercial, MIL-STD-883 (Class B or Class S), and Medical Electronics specifications.

    • Automated inspection using the latest August Technology and Camtek systems
    • 100% visual inspection (high and low power) is available to the specifications you need
    • All operators are trained and certified to commercial, Mil-STD-883, Method 2010 Cond A & B, and customer specific requirements.
  • Quality & Service

    Each order is entered on a custom traveler generated for each customer's specific requirements allowing for flexible process flows.

  • High Volume

    CORWIL processes tens of millions of dice per month and is the leading provider of wafer sawing and die visual inspection services for the leading heart pacemaker, RFID, hearing aid and defibrillator manufacturers.

Keywords: Bumped Wafers, Dice, Wafer, Wafer Sawing,

Other products and services from Corwil


CORWIL | Engineering

For next generation product development and one-of-a-kind devices, including devices with rerouted circuitry surgically done by Focused Ion Beam or a Re-Distribution Layer of metal, customers trust CORWIL. The engineering staff consists of industry veterans with an average of 20 years experience in semiconductor assembly and test, including high volume manufacturing with IDM's and Asian subcontractors.


CORWIL | Environmental & Electrical Test

CORWIL uses an automated wafer stepper/prober that can interface to a variety of probe card configurations and test platforms. CORWIL's wafer probe systems use standard rectangular probe cards and cantilever probes. CORWIL can design and procure custom probe cards for wafer probing your IC wafers. Custom test software development is available for CORWIL's digital test systems. Probecard & Interface Card Design & Fabrication.


CORWIL | MIL / Aerospace

Whether you need to place commercial die in a hermetic package or perform additional screening to an existing plastic, we can help you meet your requirements. CORWIL offers a host of solutions to fill the need for cutting edge technology in hermetic packages. CORWIL provides a wide range of ceramic packages that are suitable for Military and Aerospace use. CORWIL's management has over 100 years of service in the Military/Aerospace industry.


CORWIL | SIP & MCM Modules

SIPs (System in Package) and MCMs are substrates containing multiple interconnected components (SMT components, Flip Chips, WLCSP, and/or wirebonded ICs) whose body outline and leads or ball array conform to conventional IC package, such as a JEDEC registered BGA. RF Modules are SIPs or MCMs that require special substrate design, materials, and soldering in order to achieve the high frequency and performance desired.


CORWIL | Services

CORWIL has established itself as the leading IC assembly subcontractor in the U.S. for quick-turn prototypes, small and medium size production lots, as well as full production volumes for high-reliability and mil-spec devices. CORWIL has the experience to meet your most demanding challenges in Flip Chip assembly, aluminum and gold wire bonding, custom encapsulation and plastic molding, wafer probe, and wafer thinning, polishing and dicing.


CORWIL | IC Assembly

Our flexibility in meeting customer requirements and our superior customer service separate us from all other assembly subcontractors worldwide. CORWIL can assemble devices into Open Cavity plastic packages in prototype quantities in as quickly as 8 hours from receipt of the packages. CORWIL assembles ICs in prototype and production volumes to help you qualify your designs and provide quality samples to your customers.