Abstract: A thin film transistor (TFT) array substrate has a plurality of pixel units. A plurality of signal lines and a plurality of scanning lines are formed on the substrate. Each of the plurality of paired and adjacent signal lines and each of the plurality of scanning lines are arranged in a matrix form to define each pixel unit. Each pixel unit includes at least two pixels, which are abreast of the paired and adjacent signal lines. This structure thereby provides a TFT array substrate with high aperture ratio pixel structure.

Abstract: In the typical LCD device, the ON/OFF inspection is performed by unit cell. However, in the case of the small size LCD device, since the liquid crystal cell substrate has many unit cells, the total inspection time is too long and the long handling time contributes to increasing the number of inferior cells. To solve these problems, the ON/OFF inspection of the liquid crystal cell for the small size LCD device having many unit cells is simultaneously performed for the entire liquid crystal cell substrate before cutting into the unit cells. Thus, the number of damaged cells during the inspection process and the process time can be reduced, and the yield can increase.

Abstract: A liquid crystal display (LCD) device having a color filter on a thin film transistor (TFT) structure (COT structure). The color filter layers are formed on the same substrate as the TFT to be in direct contact with the source and drain electrodes without any intermediaries therebetween. In particular, there is no need for a passivation layer between the TFT and the color filter layers. Preferred embodiments include a back etched type TFT that does not require a light shielding layer, an etch-stopped type TFT having an etch stop layer, and a coplanar type TFT having a light shielding layer below the gate electrode of the TFT.