Liquid crystal display device
View Patent ↗A liquid crystal display device using a wall electrode facilitates enclosing of liquid crystal and improves transmittance. The liquid crystal display device includes a plurality of pixels arranged in a matrix. Each of the pixels includes large walls, a small wall, a TFT-side electrode, and a wall electrode. The large walls extend in a long-side direction of the pixel at both ends of the pixel. The small wall extends parallel to the large walls between the large walls. The TFT-side electrode is formed on the small wall. The wall electrode is formed on a side surface of the large wall and formed between the large wall and the small wall. The large walls are separated between the pixels in the long-side direction. The small wall which has a height lower than the large walls is arranged between the separated large walls.
1. A liquid crystal display device comprising:
a plurality of pixels arranged in a matrix, each of the pixels including:
large walls that extend in a long-side direction of the pixel at both ends of the pixel;
a first small wall that extends parallel to the large walls between the large walls, the first small wall having a height lower than the large walls;
a TFT-side electrode formed on the first small wall; and
a wall electrode formed on a side surface of the large wall and formed in plane between the large wall and the first small wall;
wherein the large walls are separated between the pixels in the long-side direction; and
a second small wall which has a height lower than the large walls is arranged between the separated large walls;
wherein the TFT-side electrode and the wall electrode do not exist under the first small wall.
2. The liquid crystal display device according to claim 1 ,
wherein each of the pixels includes the second small wall that is continuously arranged at the both ends of the pixel, the second small wall extending in a short-side direction of the pixel.
3. The liquid crystal display device according to claim 2 , further comprising:
a drain line in the long-side direction of the pixel and a gate line in the short-side direction of the pixel; and
a common electrode formed via the second small wall in an upper layer of the drain line and the gate line.
4. The liquid crystal display device according to claim 3 ,
wherein the common electrode is coupled to the common electrodes of adjacent pixels in the short-side direction and the long-side direction of the pixel.
5. The liquid crystal display device according to claim 1 , further comprising:
a common electrode formed on a gate line in a short-side direction of the pixel via an interlayer insulating film.
6. The liquid crystal display device according to claim 1 , further comprising:
a storage capacitor electrode that faces a planar electrode across an interlayer insulating film to form a capacitive element, the storage capacitor electrode being coupled to the TFT-side electrode and formed in a planar direction of a substrate, the planar electrode extending in a planar direction of a substrate from the wall electrode.
7. A liquid crystal display device comprising:
a plurality of pixels arranged in a matrix, each of the pixels including:
large walls that extend in a long-side direction of the pixel at both ends of the pixel;
a first small wall that extends parallel to the large walls between the large walls, the first small wall having a height lower than the large walls;
a TFT-side electrode formed on the first small wall as a common electrode;
a wall electrode formed on a side surface of the large wall and formed between the large wall and the first small wall as a source electrode; and
a bent portion formed in an end portion of the first small wall, the bent portion facing the large wall;
wherein the common electrode is formed in the bent portion;
wherein the common electrode and the source electrode are not formed under the first small wall;
wherein the large walls are separated between the pixels in the long-side direction; and
wherein a second small wall, which has a height lower than the large walls, exists between the separated large walls.
8. The liquid crystal display device according to claim 7 ,
wherein the bent portion includes a distal end with a shape in an acute angle or a round shape.
9. The liquid crystal display device according to claim 7 ,
wherein a distance between the large wall and the first small wall is defined as k, and
the bent portion has a length L that is defined by k/4<L<3k/4.
10. The liquid crystal display device according to claim 7 , further comprising:
a storage capacitor electrode that faces a planar electrode across an interlayer insulating film to form a capacitive element, the storage capacitor electrode being coupled to the TFT-side electrode and formed in a planar direction of a substrate, the planar electrode extending in a planar direction of a substrate from the wall electrode.
11. The liquid crystal display device according to claim 7 , further comprising:
a common electrode formed on a gate line in a short-side direction of the pixel via an interlayer insulating film.
12. The liquid crystal display device according to claim 7 , further comprising:
a drain line in the long-side direction of the pixel and a gate line in a short-side direction of the pixel; and
a common electrode formed via the second small wall in an upper layer of the drain line and the gate line.
13. The liquid crystal display device according to claim 1 ,
wherein the second small wall extends in the short-side direction of the pixel transversely to the extension direction of the large wall and the first small wall.
14. The liquid crystal display device according to claim 7 ,
wherein the second small wall extends in the short-side direction of the pixel transversely to the extension direction of the large wall and the first small wall.