Liquid crystal display device, manufacturing method of the same and electronic equipment
View Patent ↗A liquid crystal display device includes: a plurality of scan lines and signal lines on one of a pair of substrates arranged to be opposed to each other with a liquid crystal layer sandwiched therebetween, the scan lines and signal lines extending in different directions; and an orientation film, pixel electrode, insulating layer and common electrode, the orientation film being rubbed in a rubbing direction having a given inclination with respect to a pixel arrangement direction. The pixel electrode is partitioned by the scan lines and signal lines and has subpixels made up of first and second regions. The first region has a plurality of slit-shaped openings having a given inclination in a first direction with respect to the rubbing direction. The second region has a plurality of slit-shaped openings having a given inclination in a second direction with respect to the rubbing direction.
1. A liquid crystal display device comprising:
a plurality of scan lines and a plurality of signal lines on one of a pair of substrates arranged opposed to each other with a liquid crystal layer sandwiched therebetween, the plurality of scan lines and the plurality of signal lines extending in different directions; and
an orientation film, pixel electrode, insulating layer and common electrode in this order from the side of the liquid crystal layer, the orientation film being rubbed in a rubbing direction having a given inclination with respect to a pixel arrangement direction, wherein
the pixel electrode has sub-pixels made up of first and second regions arranged side by side in the rubbing direction;
the first and second regions are partitioned respectively by the scan lines and signal lines,
the first region has a plurality of slit-shaped openings having a given inclination in a first direction with respect to the rubbing direction;
the second region has a plurality of slit-shaped openings having a given inclination in a second direction with respect to the rubbing direction;
ends of the slit-shaped openings of the first region in the direction are arranged side by side in a same direction of extension having a first given inclination in the first direction, and
ends of the slit-shaped openings of the second region in the direction are arranged side by side in a same direction of extension having a second given inclination in the second direction.
2. The liquid crystal display device of claim 1 , wherein
each of the first and second regions has a single-domain structure, and
each of the sub-pixels forms a multi-domain structure with the first and second regions.
3. The liquid crystal display device of claim 1 , wherein the magnitude of inclination of the slit-shaped openings of the first region with respect to the rubbing direction is the same as the magnitude of inclination of the slit-shaped openings of the second region with respect to the rubbing direction.
4. The liquid crystal display device of claim 3 , wherein the magnitude of inclination with respect to the rubbing direction is five degrees.
5. The liquid crystal display device of claim 4 , wherein the inclination of the rubbing direction with respect to the row direction is ten degrees.
6. The liquid crystal display device of claim 5 , wherein one pixel includes three sub-pixels.
7. The liquid crystal display device of claim 1 , wherein the ends of the slit-shaped openings of the first and second regions in the direction of extension overlap a black matrix as seen in planar view.
8. The liquid crystal display device of claim 1 , wherein each of the signal lines includes:
a first portion routed along one side of the first region,
a second portion routed along one side of the second region, and
a third portion adapted to connect, in a crank form, the first and second portions.
9. The liquid crystal display device of claim 8 , wherein the signal line includes:
a fourth portion adapted to connect, in a crank form, the second portion of one pixel and the first portion of another pixel adjacent to the one pixel.
10. The liquid crystal display device of claim 1 , wherein an aperture ratio of the first region is the same as that of the second region.
11. The liquid crystal display device of claim 1 , wherein a gravity center of the first region is aligned with that of the second region along the pixel arrangement direction.
12. The liquid crystal display device of claim 1 , wherein the first and second regions are arranged repeatedly along the pixel arrangement direction in which the first and second regions are arranged side by side.
13. A manufacturing method of a liquid crystal display device, the liquid crystal display device including;
a plurality of scan lines and a plurality of signal lines on one of a pair of substrates arranged to be opposed to each other with a liquid crystal layer sandwiched therebetween, the plurality of scan lines and the plurality of signal lines extending in different directions, and
an orientation film, pixel electrode, insulating layer and common electrode in this order from the side of the liquid crystal layer,
the manufacturing method comprising:
rubbing the orientation film in a rubbing direction having a given inclination with respect to a pixel arrangement direction; and
forming the pixel electrode having subpixels made up of first and second regions that are arranged side by side in the rubbing direction and are partitioned respectively by the scan lines and signal lines, the first region having a plurality of slit-shaped openings having a given inclination in a first direction with respect to the rubbing direction, and the second region having a plurality of slit-shaped openings having a given inclination in a second direction with respect to the rubbing direction wherein
ends of the slit-shaped openings of the first region in the direction are arranged side by side in a same direction of extension have the having a first given inclination in the first direction, and
ends of the slit-shaped openings of the second region in the direction are arranged side by side in a same direction of extension have the having a second given inclination in the second direction.
14. An electronic device having a liquid crystal display device, the liquid crystal display device comprising:
a plurality of scan lines and a plurality of signal lines on one of a pair of substrates arranged to be opposed to each other with a liquid crystal layer sandwiched therebetween, the plurality of scan lines and the plurality of signal lines extending in different directions; and
an orientation film, pixel electrode, insulating layer and common electrode in this order from the side of the liquid crystal layer, the orientation film being rubbed in a rubbing direction having a given inclination with respect to a pixel arrangement direction, wherein
the pixel electrode has subpixels made up of first and second regions arranged side by side in the rubbing direction;
the first and second regions are partitioned respectively by the scan lines and signal lines,
the first region has a plurality of slit-shaped openings having a given inclination in a first direction with respect to the rubbing direction;
the second region has a plurality of slit-shaped openings having a given inclination in a second direction with respect to the rubbing direction;
ends of the slit-shaped openings of the first region in the direction are arranged side by side in a same direction of extension have the having a first given inclination in the first direction, and
ends of the slit-shaped openings of the second region in the direction are arranged side by side in a same direction of extension have the having a second given inclination in the second direction.
15. The liquid crystal display device of claim 1 , wherein
when length of the ends of the first and second region is measured along a perpendicular direction to a direction that extends the scanning line, the sum of length of the ends of the first region is different to the sum of the length of the ends of the second region.