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Liquid optically-clear adhesive (LOCA) is liquid-based bonding technology used in touch panels and display devices to bind the cover lens, plastic, or other optical materials to the main sensor unit or each other. These adhesives improve optical characteristics and durability.
The left image in Figure 2a shows the injection cone angle (+/-42 degrees) of the LED into a light guide with an optically flat entrance face. The right image shows a close-up view of the left image. Figures 2b and 2c (and their details on the right) show the effects of two variations of 3M uniformity tape, with refractive indexed of 1.54 and 1 ...
Adhesive is usually coated on a polypropylene or polyester film. Commonly 48 mm (1.9 in) or 72 mm (2.8 in) wide. Double-sided tape This tape has adhesive on both sides, and is used to stick two surfaces together. Duct tape Usually gray in color, this tape is backed with scrim, often coated with rubber or plastic. [1] Elastic therapeutic tape
Silicone: The most commonly found adhesive in optical bonding processes that dates back to the 1970s as a solution. [citation needed] Silicone's core properties of low conductivity and chemical reactivity, thermal stability, and ability to repel water and form watertight seals make it a common solution for optical bonding. Also, because it is a ...
In 2004, Anatoly Rosenflanz and colleagues at 3M used a "flame-spray" technique to alloy aluminium oxide (or alumina) with rare-earth metal oxides in order to produce high strength glass-ceramics with good optical properties. The method avoids many of the problems encountered in conventional glass forming and may be extensible to other oxides.
Pressure-sensitive tape or pressure-sensitive adhesive tape (PSA tape) is an adhesive tape that sticks when pressure is applied without the need for a solvent (such as water) or heat for activation. It is also known in various countries as self-stick tape , sticky tape , or just adhesive tape and tape , as well as genericized trademarks , such ...
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