Liquid crystal display device
View Patent ↗In a TFT type liquid crystal display device comprising first and second transparent substrates and a liquid crystal layer which is sandwiched between the first and second substrates, the first substrate includes a plurality of video signal lines, a plurality of scanning signal lines and a plurality of pixel regions which are formed as regions surrounded by the video signal lines and the scanning signal lines, each pixel region includes at least one active element, one pixel electrode and one common electrode, and color filter layers are formed between the pixel electrodes and the liquid crystal layer. The liquid crystal display device is substantially characterized in that the common electrodes are formed as layers above the color filters, the pixel electrodes are formed as layers below the color filters, and the color filters are superposed at least on the whole surfaces of the pixel electrodes in the pixel region.
1. A liquid crystal display device comprising first and second transparent substrates and a liquid crystal layer which is sandwiched between the first and second substrates,
wherein the first substrate includes a plurality of video signal lines, a plurality of scanning signal lines and a plurality of pixel regions which are formed as regions surrounded by the video signal lines and the scanning signal lines, each pixel region includes at least one active element, one pixel electrode and one common electrode, and color filters are formed between the pixel electrodes and the liquid crystal layer, the improvement being characterized in that the common electrodes are formed as layers above the color filters and the pixel electrodes are formed as layers below the color filters, and the color filters are formed to be superposed on at least the entire surfaces of the pixel electrodes in the pixel regions,
portions of the common electrodes function as common signal lines, and
the common signal lines are made of transparent conductive bodies and have light shielding layers on the active elements.
2. A liquid crystal display device according to claim 1 , wherein an organic flattened film is formed between the color filters and the common electrodes.
3. A liquid crystal display device according to claim 1 , wherein the pixel electrodes have a planar shape and the common electrodes have linear regions.
4. A liquid crystal display device according to claim 1 , wherein portions of the common electrodes are arranged to be superposed on the video signal lines.
5. A liquid crystal display device according to claim 1 , wherein portions of the common electrodes are arranged to be superposed on the scanning signal lines.
6. A liquid crystal display device according to claim 1 , wherein portions of the common electrodes are arranged to be superposed on the scanning signal lines and the video signal lines.
7. A liquid crystal display device according to claim 1 , wherein the common signal lines which are formed of the common electrodes have at least end surfaces thereof superposed on the pixel electrodes.
8. A liquid crystal display device according to claim 1 , wherein the pixel electrodes are formed of transparent electrodes.