UV cure sealant for LCD which does not contaminate LC.

PhotoLec S is an LCD sealant that readily cures by UV irradiation and gives little elution of resin or additives to LC.

Advantages

1.	Very little contamination to LC maintains the display quality.
	Little elution of resin or additives by LC takes place.
	It cures readily by UV even if the shielded area is dominant, leaving no uncured resin which can contaminate LC.
2.	Long pot life at room temperature allows easy handling and good workability.
3.	It gives good adhesion to various substrate materials.
4.	It does not contain any sizable solid pieces and functions well in narrow gaps.

Application(Function)

・LCD periphery sealant

Drop filling process and requirements of UV cure sealant

Sealant requirements · Proper viscosity · Pot life · Availability of particle mix · Contamination-proof · Proper viscosity   Availability of particle mix · Proper UV-curability     · Properheat-curability     · Good adhesion

Advantages of PhotoLec S · Viscosity adjustment to the requirement · Stable viscosity at room temp. for more than 48 hrs. · No impurity by strict process and quality controls · Unique formulation for contamination-proof. · High photo-sensitivity to assure curing and LC sealing · Good heat-curability despite the room temperature stability, to assure final curing during the annealing process

PhotoLec S-WB Compound Special epoxy-acrylic resin Appearance Opaque viscous paste Viscosity (mPa・s, at 25oC) 400,000 ± 80,000 Standard UV dose 3,000mJ Standard heat dose 120oC x 60 min. Cured hardness (Shore D) 91 Adhesion (ITO to ITO) 15.9 (N/mm) Pot life (mPa・s,at 25oC) Initial 400000 After 48 hrs. 410,000 LC specific resistance (UV cure sealant / LC = 1 / 1, heated) 1.05E13 (blanc:1.09E13) Eluent ion conductivity 2.5µS/cm Foreign matters of 5μm and larger Not detectable

Viscosity will be adjusted to the requirement.

Please feel free to consult with us. The best choice of sealant and the applying conditions will be advised.

Adequate sealant will be offered for indivisual LCD panels. Details are available on request.