Pixel structure for liquid crystal display

Abstract

The present invention builds a metal electrode that is controlled by the common electrode in each pixel cell. During operation, a voltage is first applied to this metal electrode to transform the liquid crystal molecule over this metal electrode from the splay state into the bend state. Next, a voltage is applied to the pixel electrode to transform the liquid crystal molecule in the whole pixel region from the splay state into the bend state. Two different voltage field also can be respectively applied to the common electrode and the pixel electrode.

1 . A liquid crystal display driving method, wherein said liquid crystal display comprises a first substrate having a plurality of scan lines, video data lines and pixel regions disposed therein, a second substrate having a conductor electrode disposed therein and a liquid crystal layer sandwiched between said first substrate and said second substrate, each pixel region comprising a switching transistor, a pixel electrode connected with said switch transistor, and a common electrode and a metal electrode extending from said common electrode, wherein said pixel electrode, said common electrode and said metal electrode are isolated from each other, said drive method comprising the steps:
 (a) transforming a voltage applied in said common electrode from a first voltage to a second voltage;   (b) conducting said switching transistors, wherein video data is transferred from said video data lines to said pixel regions;   (c) closing said switching transistors to maintain said video data in said pixel regions;   (d) transforming the voltage applied to said common electrode from said second voltage to said first voltage;   (e) conducting said switching transistors, wherein said video data is released from said pixel regions;   (f) closing said switching transistors; and   (g) repeating (a) step to (f) step.   
   
   
       2 . The liquid crystal display driving method of  claim 1 , wherein said (a) step and (b) step can be performed together, and when said (a) step and (b) step are performed together, said (d) step and (e) step are also performed together. 
   
   
       3 . The liquid crystal display driving method of  claim 1 , wherein said second voltage is higher than said first voltage. 
   
   
       4 . The liquid crystal display driving method of  claim 1 , wherein the gate electrodes of said switching transistors are connected to said scan lines. 
   
   
       5 . The liquid crystal display driving method of  claim 1 , wherein said pixel electrodes are connected to said video data lines when said switching transistors are conducted.