OCA

Key Word Search

Filter by Category

Popular tags

3M
ECG
EMI
EP
GMN
GMP
IMD
IQ
ISO
LED
NC
OCA
OQ
PQ
RBH
Tag
VHB
By Bronson Berry | Aug 29, 2017
The iViz is a portable ultrasound device that is used from hospitals to remote locations

After working with GM Nameplate (GMN) several times in the past on front panel integration projects, Fujifilm SonoSite came to us for help with manufacturing their new portable ultrasound device, the iViz. The device needed to be lightweight and thin to maximize portability, but also needed to be tough and durable if accidentally dropped. GMN successfully achieved both of these goals through careful material selection and by utilizing a new technology during the bonding process: vacuum lamination.

To learn more about how GMN supported Fujifilm, read our case study.

To learn more about the vacuum laminator that was secured for this project, read our press release.

By Steve Baker | Oct 2, 2015
Vacuum laminator for bonding

Today GMN presents the final article in a three part blog series focused on GMN bonding capabilities. The team here is very excited about this third bonding technology, the rigid-to-rigid optically clear adhesive (OCA) bonding, which is the newest of GMN’s bonding processes.

Rigid-to-rigid vacuum OCA bonding is a cutting edge technology that allows GMN to provide thinner bond lines and as a result, thinner overall stack ups. Rigid-to-rigid OCA bonding is a process in which a vacuum chamber removes all air from the part and allows components to be applied together with optimum optical clarity and without bubbles. This OCA is a dry film pressure sensitive adhesive.

The main advantage of this bonding technology is the thinner bond line. Whereas liquid optically clear adhesive (LOCA) bonding can achieve a bond line between .015” to .030,” OCA bonding can get even smaller, to achieve a .005” to a .008” bond line. This bonding capability is well suited for thin components including cover glass, touchscreens, and frameless LCDs.

Another advantage of the rigid-to-rigid OCA bonding is that no curing is needed. Whereas the LOCA bonding requires curing liquid through a printed border, this isn’t an issue for OCA bonding because a sheet adhesive is used instead. Using a sheet adhesive also allows the OCA bonding to provide a tighter tolerance and as a result, a consistent and flat bond line.

Consequently, with the added benefits of OCA bonding, come a few challenges. One of the most impactful difficulties is that the bonded adhesive is not re-workable. Despite this difficulty, OCA bonding is highly regarded as one of the best bonding solutions available.

GMN is very excited to offer rigid-to-rigid OCA bonding, alongside our other bonding technologies, to offer a wide variety of options to meet every project need.

Read our other blogs in the bonding series:

Bonding technologies: air gap bonding (part 1 of 3)

Bonding technologies: liquid optically clear adhesive (part 2 of 3)