Abstract
The paste dried and hardened on glass substrate for fabrication of the PDP(Plasma Display Panel) barrier rib was selectively etched using focused Ar + laser(λ=514 nm)and Nd:YAG laser(λ=266, 532 nm) beam. A barrier rib was composed of mixtures which were made from organic gel, glass powder and ceramic powder. Using a second harmonic Nd:YAG laser (λ=532 nm), the threshold laser fluence was about 6.5 mJ/cm 2 for the barrier rib samples softened at 120 °C. The thickness of 180 μm of the sample was completely removed without any damages on the glass substrate by laser fluence of 19.5 J/cm 2 . In order to increase the etch rate of the barrier rib materials, samples were heated on a hot plate during the laser irradiation. The etch rate at the hot plate temperature of 200 °C was roughly 4.2 times faster than that of room temperature.
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