Usage Scenarios
• IPS LCD touch display: OpticPB® 37810 (250 μm)
• IPS LCD touch display: OpticPB® 3788 (200 μm)
OpticPB® 378 Series
Secondary UV OCA for Consumer Electronic Applications
OpticPB® 378 Series is a dual-stage UV-curable optically clear adhesive (OCA) designed for full lamination of IPS LCD touch displays. Featuring a low modulus design, it effectively reduces bonding stress and prevents mura defects and uneven display caused by post-lamination stress.
The product offers excellent air release and gap-filling capability, improving lamination yield and process stability. After bonding, a secondary UV curing step enhances material integrity, delivering improved reliability and durability. With excellent heat resistance and validated by DIN-75220 testing, it is suitable for consumer electronics and high-end display applications.
Specification
Basic Data
| Type |
Item |
Test methods / conditions | 0.25 mm(t) values | |
|---|---|---|---|---|
| Optical properties | Haze (%) |
Spectrophotometer (Glass / OCA / Glass ) |
Room Temperature | 0.53 |
| Total light transmittance (%) |
Spectrophotometer (Glass / OCA / Glass) |
Room Temperature | 90.15 | |
| b* |
Spectrophotometer (Glass / OCA / Glass) |
Room Temperature | 0.15 | |
| Refractive index | JIS K 7142 | T = 23°C，λ = 589nm (Na, D line) | 1.48 | |
| Adhesion properties | 180° peel strength (N/25mm) |
peel strength：300 mm/min |
vs Glass | 35 |
| vs TAC | 23 | |||
Customer Evaluation Pass Record
| Type |
Item |
Test methods / conditions | Others | |
|---|---|---|---|---|
|
Optical reliability test |
High temperature test | 95°C | 1000 hrs | — |
| Low temperature test | -40°C | 1000 hrs | — | |
| High temperature and high humidity test | 85°C / 85% RH | 1000 hrs | — | |
| Thermal shock test | -40°C ⇔ 85°C | 1000 cycles | — | |
Note:
Values are actual measurements, not guaranteed values.
Acceptance criteria: no whitening, yellowing, delamination, delayed bubbles, abnormal operation, display MURA, etc. after the test.
Pack Sizes
- 150 μm x 1200 mm x 200 m/roll
- 200 μm x 1200 mm x 200 m/roll
- 250 μm x 1200 mm x 200 m/roll
- Customized slitting sizes available
