The disclosure provides a liquid crystal display (LCD) device and a manufacturing method thereof. A temperature sensing driver chip is disposed in the LCD device and can output a voltage signal to a control electrode according to changes in temperature. Therefore, an electric field is formed between the control electrode and a common electrode. Heights of a plurality of supporting posts can be changed by the electric field to control stretching and shrinking of the control electrode, thereby improving performance of the supporting posts. Thus, a plurality of organic material spheres disposed in the supporting posts can improve stress tolerance of the supporting posts, thereby further improving performance of the supporting posts.