Liquid crystal display device having common electrode being formed on color filter patterns
View Patent ↗An LCD device and a method for fabricating the same is described, in which each of light-shielding patterns has the uniform thickness to prevent the step coverage from being generated in color filter patterns by the light-shielding patterns. The LCD device includes a substrate with pixel and light shielding regions definede, a transparent material layer formed on the substrate corresponding to the pixel regions, a light-shielding layer formed on the substrate corresponding to the light shielding regions, and a color filter layer on the transparent material layer.
1. An LCD device, comprising:
a first substrate with defined pixel regions and light shielding regions;
a transparent material layer formed on the first substrate corresponding to the pixel regions, wherein the transparent material layer is formed of methacryl;
a light-shielding layer formed on the first substrate corresponding to the light shielding regions and being adjacent to the transparent material layer, the light shielding layer being formed at positions where portions of the transparent material layer has been removed;
color filter patterns on the transparent material layer, ends of the color filter patterns overlapping the light-shielding layer; and
a common electrode between the color filter patterns and on the color filter patterns, wherein the common electrode has a thinner thickness at an area on the color filter patterns than an area on the light-shielding layer between the color filter patterns,
wherein the common electrode between the color filter patterns is directly in contact with the light-shielding layer,
wherein heights of the transparent material layer and the light-shielding layer are substantially the same, and
wherein the thickness of the common electrode varies only in a portion of the common electrode that is on and over the light shielding layer.
2. The LCD device of claim 1 , wherein corresponding color filter patterns overlap with predetermined portions of the light-shielding layer adjacent to the transparent material layer.
3. The LCD device of claim 1 , further comprising an orientation layer above the common electrode.
4. The LCD device of claim 1 , further comprising an orientation layer on the common electrode.
5. The LCD device of claim 1 , further comprising:
a second substrate opposite to the first substrate with a predetermined interval therebetween, the second substrate having a thin film transistor and a pixel electrode; and
a liquid crystal layer formed between the first and second substrates.
6. The LCD device of claim 5 , wherein the common electrode is in parallel with the pixel electrode in each pixel region on the second substrate.