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OCR Overview


Hybrid type OCR

    Introduction to Hybrid type OCR

Application - Attaching cover glass to display panel.
- Attaching touch panel to display panel.
Bonding
process
• Step curing method
    Pre-curing dosage: 300~2,000mJ/㎠

Advantages - Curing adhesives under the light-blocked area(under black matrix).
- The quantity of over-flow is controllable quantitatively.

    Specification of Hybrid type OCR

▣ Pre-curing dosages are various(300mJ/㎠~2000mJ/㎠).
▣ MRH6140H, 6631H, 7640H: Very low modulus/hardness, low dielectric constant and good reliability(b*).

Item Unit Reliability Test MRH6140H MRH6631H MRH7640H
Pre-curing dosage mJ/㎠ - 1000 300 500
Main-curing dosage (@95%, LED 365nm) mJ/㎠ - 1500 1700 2000
Curing rate under black matrix % - 75.6 82.5 79.2
Viscosity cPs - 7000 6000 6000
Refractive index - - 1.47 1.47 1.47
Density g/cc - 0.8795 0.8849 0.8699
Density g/cc - 0.8966 0.9029 0.8837
Shrinkage % - 1.91 1.98 1.56
Hardness - - 33 11 3
Modulus Pa - 1.1E+04 1.4E+04 8.9E+03
Adhesive Shear Strength(Glass to Glass) Pa 0 hr 8.2E+05 7.2E+05 7.1E+05
500 hrs 8.4E+05 8.8E+05 8.0E+05
CTE(above Tg) ppm 0 hr 520 740 800
500 hrs 670 720 760
Dielectric constant - 0 hr 2.75 2.56 2.78
500 hrs 2.77 2.55 2.73
Refractive index - - 1.47 1.47 1.47
transmittance % 0 hr 99.7 99.5 99.5
500 hrs 99.6 99.2 98.3
Haze % 0 hr 0.03 0.01 0.01
500 hrs 0.09 0.01 0.02
Yellowish - 0 hr 0.02 0.01 0.01
500 hrs 0.49 0.39 0.48
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