Laser Release Material

BrewerBOND® 701 Material

The need for UV laser technology options within the packaging realm is ever evolving. The introduction of Brewer Science’s first generation UV laser release material was designed to benefit a variety of temporary bonding and debonding market applications including chip-first/chip-last and RDL-first FOWLP processes.

Data Sheet Contact Us

Laser ReleaseBrewerBOND® 701 material is the most versatile excimer laser release material due to its ability to handle a variety of stress applications. Its typical thickness is 150-250 nm, and the material is thermally stable up to 350°C. The material is used with a transparent carrier and can be debonded at 308-nm or 355-nm laser wavelengths. BrewerBOND® 701 material can be removed with solvent prior to cure for rework. When using the laser debond process, this material is suitable for all production environments due to its high throughput and no-stress separation.

Benefits

  • Compatible with high-temperature backside processing ≤ 400°C
  • Compatibility with various wavelengths (248nm, 308nm, 343nm, and 355nm)
  • Enables no-stress separation from carrier at room temperature
  • Enables alternative processes including selective debonding when used
    with other release layers
  • Enables rapid debonding with excimer laser equipment
  • Limited thermal contribution because it works with either solid state or excimer laser at lower wavelengths

Market Sectors

  • Silicon interposer as bridge technology to initiate 3-D packaging
  • eWLB (FIWLP & FOWLP)
  • Memory
  • Compound semiconductor

Laser Release Method

Distinctive characteristics of the laser release method:

  • Maximum throughput of up to 50 wafers per hour
  • Ability to withstand back-end process temperatures up to <350°C.
  • Low-stress release, making it suitable for all production environments
  • Release upon excimer laser exposure - no force used
  • Ideal for high-volume production

The laser release maximum throughput makes it a good choice for high-volume production goals. This method works for all production environments.

Cleaning

*Coating can be removed by an oxidizing plasma or an oxidizing solvent stripping process such as ozone plasma stripping, Piranha® solution, or RCA cleaning.