Products

Optically Clear Adhesives

OPBTM 378 Series
Secondary UV OCA for Consumer Electronic Applications

The OPB™ 378 Series Optically Clear Adhesive (OCA) is designed for full lamination of consumer touch displays. It is formulated with a low-modulus design, helps prevent color shift after LCD module lamination. It also provides excellent ink step-gap filling capability. With enhanced performance after secondary UV curing, the series ensures improved material reliability.

Usage Scenarios

Typical Properties

Item Unit OPBTM-3786 OPBTM-3788 OPBTM-37810
Thickness µm   150 200 250
Total Transmittance(TT) % 90.6 90.6 90.4
Hue(L*, a*, b*) - 96.0, -0.3, 0.3 96.0, -0.3, 0.3 96.0, -0.4, 0.4
Release Film(Haze) % 0.1 0.1 0.2
Yellowness Index(YI) - 0.3 0.3 0.5
Storage Modulus(G') kPa 60 60 60
Adhesion Force Kgf/inch 1.5 1.8 2.0

 

Reliability Properties

Reliability Condition Optical Propertiesa Appearanceb
105˚C, 1000h Δ Haze < 1
Δ YI < 1
T% > 90%
Δ b* < 1
No Bubble
No Delamination
-40˚C, 1000h
85˚C/85%RH, 1000h
-40~85˚C, 1000cycles
aStructure of Test Specimen Glass/OCA 50um/Glass,size 4x4 cm2
bAppearance of Test Specimen Glass/OCA/Polarizer/Glass,size 10x10 cm2

Structure

Typical Properties

Item Unit OPBTM-3786 OPBTM-3788 OPBTM-37810
Thickness µm   150 200 250
Total Transmittance(TT) % 90.6 90.6 90.4
Hue(L*, a*, b*) - 96.0, -0.3, 0.3 96.0, -0.3, 0.3 96.0, -0.4, 0.4
Release Film(Haze) % 0.1 0.1 0.2
Yellowness Index(YI) - 0.3 0.3 0.5
Storage Modulus(G') kPa 60 60 60
Adhesion Force Kgf/inch 1.5 1.8 2.0

 

Reliability Properties

Reliability Condition Optical Propertiesa Appearanceb
105˚C, 1000h Δ Haze < 1
Δ YI < 1
T% > 90%
Δ b* < 1
No Bubble
No Delamination
-40˚C, 1000h
85˚C/85%RH, 1000h
-40~85˚C, 1000cycles
aStructure of Test Specimen Glass/OCA 50um/Glass,size 4x4 cm2
bAppearance of Test Specimen Glass/OCA/Polarizer/Glass,size 10x10 cm2

Pack Sizes

1. 150um x 1200mm x 200m/roll
2. 200um x 1200mm x 200m/roll
3. 250um x 1200mm x 200m/roll
4. Customized slitting sizes available

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