| 摘要 |
PURPOSE:To obviate the generation of dust at the time of marking liquid crystal glass and to form the marks which are indelible even if the liquid crystal glass is cleaned after completion of the marking. CONSTITUTION:The liquid crystal glass 5 has a glass substrate 5 and a transparent electrode film 8 coating this substrate. This transparent electrode film 8 is constituted of a mixture composed of indium oxide and tin oxide. The liquid crystal glass 5 is irradiated with a laser beam L from a laser oscillator of an excimer laser, by which the marking of a required printing pattern is formed on the transparent electrode film 8 of the liquid crystal glass 5. Then, a reduction reaction takes place at the points irradiated with the laser beam L of the transparent electrode film 8 when the transparent electrode film 8 is irradiated with the laser beam L. These parts are developed to black and, therefore, the liquid crystal glass 5 is marked. |
