Liquid crystal display device
View Patent ↗In one aspect, a liquid crystal display device includes a display region formed of plural divided regions in a row direction. First and second driving circuits are arranged to face each other interposing the display region therebetween in the row direction. The first driving circuit is connected with odd scanning lines, and the second driving circuit is connected with the even scanning lines. A channel area of the TFT of the pixels connected to the odd scanning lines is the smallest in the divided region nearest to the first driving circuit and becomes larger gradually in the divided regions distant from the first driving circuit. A channel area of the TFT of the pixels connected to the even scanning lines is the smallest in the divided region nearest to the second driving circuit and becomes larger gradually in the divided regions with distant from the second driving circuit.
1. A liquid crystal display device, comprising:
an array substrate including;
scanning lines extending in a row direction,
signal lines extending in a column direction perpendicularly crossing the row direction,
a display region including a plurality of divided regions arranged in the row direction, adjacent divided regions respectively including a boundary region adjacent each other,
a plurality of pixels formed in the display region in which the signal lines and the scanning lines cross, each pixel including a thin film transistor (TFT) connected with the signal line and the scanning line, and
a first driving circuit and a second driving circuit arranged so as to face each other interposing the display region therebetween in the row direction, the first driving circuit being connected with the scanning lines arranged in odd row lines, and the second driving circuit being connected with the scanning lines arranged in even row lines,
a counter substrate arranged opposing the array substrate with a gap therebetween;
a liquid crystal layer held between the array substrate and the counter substrate; wherein
a channel area of the TFT of the pixels connected to the scanning lines arranged in the odd row lines is the smallest in the divided region nearest to the first driving circuit and becomes larger gradually in the divided regions distant from the first driving circuit to the second driver circuit, and
a channel area of the thin film transistor of the pixels connected to the scanning lines arranged in the even row lines is the smallest in the divided region nearest to the second driving circuit and becomes larger gradually in the divided regions distant from the second driving circuit to the first driver circuit, and
a first divided region of one of first and second adjacent divided regions includes first TFTs having a first channel area and connected with one signal line in the first divided area, and the second divided region includes second TFTs having a second channel area and connected with a second line in the second divided area, and
a boundary region including first TFTs from the first divided region and second TFTs from the second divided region at an area where the first and second divided regions are adjacent to each other, the first and second channel areas of the first TFTs and second TFTs are alternately arranged by every TFT in the row direction for each row in the boundary region.
2. The liquid crystal display device according to claim 1 , wherein the channel area of the TFT of the pixels is set by adjusting a channel length of the TFT.
3. The liquid crystal display device according to claim 1 , wherein the channel area of the TFT of the pixels is set by adjusting a channel width of the TFT.
4. The liquid crystal display device according to claim 1 , wherein the channel area of the TFT of the pixels is set by adjusting the channel length and the channel width of the TFT.
5. The liquid crystal display device according to claim 1 , wherein
an LDD length of the TFT of the pixels connected to the scanning lines arranged in the odd row lines is the smallest in the divided region nearest to the first driving circuit, and
an LDD length of the TFT of the pixels connected to the scanning lines arranged in the even row lines is the smallest in the divided region nearest to the second driving circuit.
6. The liquid crystal display device according to claim 1 , wherein
the sum of the channel areas of the plurality of pixels connected with each signal line is equal for all the signal lines.
7. The liquid crystal display device according to claim 1 , wherein the TFT is formed of a double gate type transistor.
8. The liquid crystal display device according to claim 1 , wherein a line inversion is performed.