Integrated black matrix/color filter structure for tft-lcd

Abstract

An active cell for a thin-film transistor liquid crystal display, with integrated black matrix/color filter, includes a switching device, a data line, a scanning line, a planarization layer, a light shielding layer, a dielectric layer, a first electrode layer, a liquid crystal layer, a second electrode layer, and a counter plate. The switching device is formed on the substrate, wherein the data line supplies data signals to the switching device and the scanning line supplies controlling signals to the switching device. The planarization layer is formed on the switching device and has a contact opening which is extended down to a driven end of the switching device. The light shielding layer is on a portion of the planarization layer and the dielectric layer is on the light shielding layer and a top planar region of the planarization layer. The first electrode layer is formed on the dielectric layer and the planarization layer, and the first electrode layer also communicates to the driven end of the switching device through the contact opening. The liquid crystal layer is on the substrate, the second electrode layer is on the liquid crystal layer, and the counter plate on the second electrode layer.