A liquid crystal display device and its fabricating method are discussed. The reinforced layer is braided with reinforcing filament members at a braid or winding angle which is a low angle, 40 degrees or lower. The process of the invention consists in adding the stabilizer directly to the polyamide, without producing a preblend, and then in mixing the polyamide with the additive in an extruder for feeding the composition into a die for obtaining filaments. The input voltage detection circuit is coupled to two ends of at least one LED of the LEDs respectively and used to judge whether an input voltage is lower than a LED conducting voltage.