Pixel structure for liquid crystal display
AssigneeHannstar Display Corp.
InventorsKei-Hsiung Yang, Po-Sheng Shih
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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 to 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 to the bend state.
Claims13
A liquid crystal display drive 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 switch transistor, a pixel electrode connected with said switch transistor, a common electrode and a metal electrode expanding from said common electrode, wherein said pixel electrode, said common electrode and said metal electrode are isolated from each other, said drive method comprising:
- applying a voltage to said common electrode to transform liquid crystal molecules located between said metal electrode and said conductor electrode and between said common electrode and said conductor electrode from splay state to bend state;
- conducting said switch transistor;
- and
- applying a voltage to said pixel electrode through said switch transistor to transform liquid crystal molecules in splay state to bend state.
A liquid crystal display drive method, wherein said liquid crystal display comprises a first substrate having a plurality of scan lines, video data lines and pixel regions disposed thereon, a second substrate having a conductor electrode disposed thereon and a liquid crystal layer sandwiched between said first substrate and said second substrate, each pixel region comprising a switch transistor, a pixel electrode connected with said switch transistor, a common electrode and a metal electrode expanding from said common electrode, wherein said pixel electrode, said common electrode and said metal electrode are isolated to each other, said drive method comprising:
- conducting said switch transistor;
- applying a voltage to said pixel electrode through said switch transistor;
- and
- applying a voltage to said common electrode to transform liquid crystal molecules located between said metal electrode and said conductor electrode and between said common electrode and said conductor electrode from splay state to bend state, and to transform the liquid crystal molecules still in splay state to bend state.
A liquid crystal display drive structure, 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 switch transistor, a pixel electrode connected with said switch transistor, a common electrode and a metal electrode expanding from said common electrode, wherein said pixel electrode, said common electrode and said metal electrode are isolated from each other, said drive structure comprising:
- means for applying a voltage to said common electrode to transform liquid crystal molecules located between said metal electrode and said conductor electrode and between said common electrode and said conductor electrode from splay state to bend state;
- means for conducting said switch transistor;
- and
- means for applying a voltage to said pixel electrode through said switch transistor to transform liquid crystal molecules in splay state to bend state.
Dependencies are inferred from the claim text.