A liquid crystal display device with low power consumption is provided. In the liquid crystal display device having a source signal line driver circuit, a gate signal line driver circuit, a DAC controller, and a pixel portion and performing an image display using an n-bit (n is a natural number, n2)...http://www.google.com.hk/patents/US20020041266?utm_source=gb-gplus-share專利 US20020041266 - Liquid crystal display device
