1. A liquid crystal display, comprising:
a first substrate;
a pixel electrode on the first substrate and comprising a first subpixel electrode and a second subpixel electrode separated from the first subpixel electrode;
a second substrate facing the first substrate;
a common electrode on the second substrate; and
a liquid crystal layer between the first substrate and the second substrate,
wherein the first subpixel electrode comprises a first plate-shaped portion and a plurality of first branch electrodes extended from the first plate-shaped portion,
the second subpixel electrode comprises a second plate-shaped portion surrounding the first branch electrodes and a plurality of second branch electrodes extended from the second plate-shaped portion, and
a difference between a first voltage applied to the first subpixel electrode and a common voltage applied to the common electrode is larger than a difference between a second voltage applied to the second subpixel electrode and the common voltage.
2. The liquid crystal display of claim 1, wherein:
the first plate-shaped portion of the first subpixel electrode has a rhombus planar shape, and
the second plate-shaped portion of the second subpixel electrode has a planar shape formed by combining a plurality of trapezoid shapes.
3. The liquid crystal display of claim 2, wherein:
the plurality of first branch electrodes of the first subpixel electrode comprises a first minute branch, a second minute branch, a third minute branch, and a fourth minute branch, which extend in different directions, and
the plurality of second branch electrodes of the second subpixel electrode comprises a fifth minute branch, a sixth minute branch, a seventh minute branch, and an eighth minute branch, which extend in different directions.
4. The liquid crystal display of claim 1, wherein:
a distance between the first subpixel electrode and the second subpixel electrode measured along a direction parallel to an extending direction of any one of the plurality of first branch electrodes and the plurality of second branch electrodes is about 4 \u03bcm or less; and
a ratio of the voltage applied to the second subpixel electrode to the voltage applied to the first subpixel electrode is about 0.83 or less.
5. The liquid crystal display of claim 1, wherein:
a distance between the first subpixel electrode and the second subpixel electrode measured along a direction parallel to an extending direction of any one of the plurality of first branch electrodes and the plurality of second branch electrodes is larger than about 4 \u03bcm and about 4.5 \u03bcm or less; and
a ratio of the voltage applied to the second subpixel electrode to the voltage applied to the first subpixel electrode is about 0.75 or less.
6. The liquid crystal display of claim 1, wherein:
a distance between the first subpixel electrode and the second subpixel electrode measured along a direction parallel to an extending direction of any one of the plurality of first branch electrodes and the plurality of second branch electrodes is about 5 \u03bcm or more; and
a ratio of the voltage applied to the second subpixel electrode to the voltage applied to the first subpixel electrode is about 0.7 or less.
7. The liquid crystal display of claim 1, wherein:
one-half of an entire width of the first plate-shaped portion of the first pixel electrode measured along a direction parallel to an extending direction of any one of the plurality of first branch electrodes and the plurality of second branch electrodes is about 25 \u03bcm or less.
8. The liquid crystal display of claim 7, wherein:
a width of the second plate-shaped portion of the second pixel electrode measured along a direction parallel to an extending direction of any one of the plurality of first branch electrodes and the plurality of second branch electrodes is about 25 \u03bcm or less.
9. The liquid crystal display of claim 7, wherein:
lengths of the plurality of first branch electrodes and the plurality of second branch electrodes are each about 25 \u03bcm or less.
10. The liquid crystal display of claim 1, wherein:
an edge of the first plate-shaped portion of the first subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with a gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
11. The liquid crystal display of claim 10, wherein:
an edge of the second plate-shaped portion of the second subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with the gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
12. The liquid crystal display of claim 11, wherein:
a boundary between the first subpixel electrode and the second subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with the gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
13. The liquid crystal display of claim 12, wherein:
the first branch electrode of the first subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with the gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
14. The liquid crystal display of claim 1, wherein:
an edge of the second plate-shaped portion of the second subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with a gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
15. The liquid crystal display of claim 14, wherein:
a boundary between the first subpixel electrode and the second subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with the gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
16. The liquid crystal display of claim 15, wherein:
the first branch electrode of the first subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with the gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
17. The liquid crystal display of claim 1, wherein:
a boundary between the first subpixel electrode and the second subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with a gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with a gate line.
18. The liquid crystal display of claim 17, wherein:
the first branch electrode of the first subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with the gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
19. The liquid crystal display of claim 1, wherein:
the first branch electrode of the first subpixel electrode forms an angle of about 45\xb0 or about 135\xb0 with a gate line, or forms an angle of larger than about 45\xb0 or smaller than about 135\xb0 with the gate line.
20. The liquid crystal display of claim 1, wherein:
a width of the second plate-shaped portion is smaller than a width of the first plate-shaped portion.
21. The liquid crystal display of claim 1, wherein:
a width of an end of the first branch electrode adjacent to the second plate-shaped portion is larger than that of any other portions of the first branch electrode.
22. The liquid crystal display of claim 21, wherein:
on a boundary between the second plate-shaped portion and the second branch electrode, a width of the second branch electrode is smaller than that of any other portions of the second branch electrode.
23. The liquid crystal display of claim 1, wherein:
the first subpixel electrode does notcomprise the first branch electrode, but comprises only the first plate-shaped portion.
24. The liquid crystal display of claim 1, further comprising:
an insulating layer below the pixel electrode,
wherein the insulating layer comprises a first portion below the first subpixel electrode and a second portion below the second subpixel electrode, and
a height of the first portion is larger than a height of the second portion.
25. The liquid crystal display of claim 24, wherein:
a boundary between the first portion and the second portion is overlapped with the second plate-shaped portion of the second subpixel electrode, or overlapped with the first branch electrode of the first subpixel electrode.
26. The liquid crystal display of claim 24, wherein:
a boundary between the first portion and the second portion is overlapped with the second plate-shaped portion of the second subpixel electrode, and
the second portion comprises a plurality of regions having different slopes formed with the substrate.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A roll recording material transport device comprising:
a pair of roll holders attached to respective ends of a roll portion of a roll of recording material;
a pair of spindles that engage with the pair of roll holders and support the roll portion;
a spindle driving source that rotates one of the pair of spindles on the driving side in the forward direction and the reverse direction;
a driving side support mechanism and a driven side support mechanism that support one of the pair of spindles on the driving side and the other on the driven side, respectively;
a transport roller that pinches and transports the roll of recording material pulled out from the roll portion; and
an assist executing section that executes assist control in which a rotating force in the direction of transporting the roll of recording material is applied by the spindle driving source through the driving side spindle and the driving side roll holder in an engaged state to the roll portion,
wherein when the rotation of the roll portion is at a stop, the driving side spindle, driven by the spindle driving source, overcomes the frictional force with the driving side roll holder and rotates relative to the driving side roll holder and goes into an engaged state in which the rotating force for the assist control is applied to the roll portion,
wherein the driving side support mechanism and the driven side support mechanism include support frames, and
wherein the support frame on the driven side includes a friction applying member that generates the frictional force of the driven side spindle.
2. The roll recording material transport device according to claim 1, wherein the assist executing section includes an engaging projection that is provided in the driving side spindle, an engaging step portion that is provided in the driving side roll holder and engages with the engaging projection, and a movement permitting area that is provided in the driving side roll holder and permits the movement of the engaging projection, and
wherein the engaging projection is brought into contact with the engaging step portion by the spindle driving source and executes the assist control.
3. The roll recording material transport device according to claim 1, wherein the roll of recording material is transported intermittently.
4. The roll recording material transport device according to claim 1, wherein the driving side support mechanism and the driven side support mechanism include bearings that rotatably support the driving side spindle and the driven side spindle and wherein the support frames support the bearings.
5. A recording apparatus comprising:
a roll recording material transport device that pulls out a roll of recording material and transports the roll of recording material to a recording position; and
a recording executing device that ejects ink onto a recording surface of the roll of recording material transported to the recording position and thereby executes desired recording, wherein the roll recording material transport device is the roll recording material transport device according to claim 1.