Loctite Liquid Optically Clear Adhesives
Loctite Liquid Optically Clear Adhesives (LOCA) from Henkel Corporation are improving the viewing experience on mobile devices, laptops and tablets.
New dual cure technologies allow full cure in shadowed areas, and offer vastly reduced shrinkage to control display distortion and eliminate mura.
When used on AR glass, Loctite LOCA products increase the contrast ratio in sunlight by 400 percent and minimize the refractive index mismatch to glass and PMMA, minimizing light loss due to reflection. Reduced light loss means the user enjoys a superior viewing experience and the device consumes far less power, which extends battery life. Loctite LOCA products increase display robustness significantly; for example, LOCAs can increase ball-drop impact resistance as much as 300 percent for gaps up to 1 mm. And displays withstand higher heat and humidity, and resist temperature cycling. As they absorb impact load and protect gap-free display surfaces, these adhesives allow the production of thinner panels.
The seven products in the Loctite LOCA line include two dual cure adhesives designed to cure in shadowed area where light cannot reach. Loctite 5192 is a high-temperature-resistant, non-yellowing UV/moisture cure silicone that shrinks very little and contributes minimal stress to the surface of the LCD, reducing mura defects. Loctite 3192 is a general-purpose UV/heat cure acrylic with a refractive index that delivers excellent brightness, clarity and color. Ideal for high volume production, this product heat cures in just one minute at 80ºC.
Designed for both TP1 (touch panel to cover lens) and TP2 (cover lens to LCD) bonding, Loctite 3196 is a general-purpose, impact-absorbent UV acrylic that protects the display surface from damage. This unique adhesive can also replace the air gap designed into TP2 applications. UV cure Loctite 3193 delivers high adhesion to plastic, while Loctite® 3195 is a general-purpose adhesive for TP1 glass-to-glass bonding. Loctite 3195DM is a high viscosity dam material compatible with most UV acrylic LOCAs. Loctite 5192DM is a high viscosity silicone dam material designed for use with Loctite 5192™ UV/moisture cure silicone.
INDUSTRIAL SUPPLY MAGAZINE
The May/June issue of Industrial Supply magazine features an in-depth cover story about GHX Industrial. Plus, we're featuring articles by contributing writers Dr. Bharani Nagarathnam and Frank Hurtte, as well as interviews with numerous product and distribution industry experts.
