Array substrate, liquid crystal display panel having the same and liquid crystal display device having the same

Abstract

In an array substrate, an LCD panel having the same and an LCD device having the same, the array substrate may include an insulating substrate, a switching element (e.g., a transistor such as a TFT), a main pixel portion, a coupling capacitor and a sub-pixel portion. The switching element may be formed on the insulating substrate in a pixel region defined by gate and data lines adjacent to each other. The gate and data lines may be formed on the insulating substrate. The main pixel portion is on a first (e.g., central) portion of the pixel region. The coupling capacitor is electrically connected to the switching element. The coupling capacitor is on the insulating substrate. The sub-pixel portion is electrically connected to the coupling capacitor. The sub-pixel portion is on a second (e.g., peripheral) portion of the pixel region. Therefore, an image display quality is improved.

1 . An array substrate comprising:
 an insulating substrate;   a switching transistor comprising a gate electrode, a source electrode and a drain electrode on the insulating substrate in a pixel region;   a gate line electrically coupled to the gate electrode;   a data line electrically coupled to the source electrode;   a main pixel electrode formed in the center region of the pixel region and electrically coupled to the drain electrode;   a sub-pixel electrode formed in an edge region of the pixel region; and   a coupling capacitor electrically coupling the drain electrode and the sub-pixel electrode.