| Summary: | 碩士 === 國立中興大學 === 材料科學與工程學系所 === 97 === Color filter is a key part of Liquid crystal display (LCD) to achieve high color saturation. R, G, B pixels play a role of colorful LCD. If R, G, B pixels suffered abnormal process, it will affect the brightness and contrast ratio of LCD.
We use 1064 nm Nd:YG Laser to treat R, G, B photoresist by thermal effect, to let R, G, B photoresist surface charring, and shield the abnormal pixels, it will be useful for LCD process.
Green and Blue photoresist can get good surface charring by the suitable laser parameter, but Red photoresist get unstable laser light absorption, it couldn’t get good charring result. Blue photoresist need larger laser energy to get surface charring than others.
We use Color analyzer to measure charring difference, the brightness is darker when the larger laser energy treat on Red, Green and Blue photoresist. For ablation width and depth, the width and the depth of photoresist is wider and deeper by the larger laser energy, it caused from laser thermal diffusing effect.
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