Patent ID: 7728801

Claim:
A method of driving an LCD including a first viewing-angle-adjusting device having a liquid crystal, comprising: generating a first voltage difference to the first viewing-angle-adjusting device to execute a wide-viewing-angle mode according to a wide-viewing-angle-mode signal by aligning the liquid crystal in one of a vertical state and a flat state, wherein the first voltage difference is one of substantially equal to 0 and larger than V sat , V sat referring to a saturation voltage of the liquid crystal of the first viewing-angle-adjusting device; and generating a second voltage difference to the first viewing-angle-adjusting device to execute a narrow-viewing-angle mode according to a narrow-viewing-angle-mode signal by aligning the liquid crystal in a slopping state, wherein the second voltage difference is substantially larger than 0.5 V sat , but smaller than 0.8 V sat .