Pixel structure, display panel and display device

Patent metadata

Field	Value
Publication number	US-12216366-B2
Application number	US-202217912911-A
Country	US
Kind code	B2
Filing date	Apr 29, 2022
Priority date	Apr 29, 2022
Publication date	Feb 4, 2025
Grant date	Feb 4, 2025

Abstract

Provided is a pixel structure. The pixel structure includes: a first electrode, a second electrode, and a liquid crystal layer that are disposed on one side of a substrate and successively stacked, wherein one of the first electrode and the second electrode is a pixel electrode and the other of the first electrode and the second electrode is a common electrode, and the second electrode includes a plurality of electrode branches sequentially arranged in a first direction, wherein each of the electrode branches includes a first end portion, a body portion, and a second end portion that are successively connected in a second direction, the body portion including at least one body segment.

First claim

What is claimed is:

1. A pixel structure, comprising:
a first electrode, a second electrode, and a liquid crystal layer that are disposed on one side of a substrate and successively stacked, wherein one of the first electrode and the second electrode is a pixel electrode and the other of the first electrode and the second electrode is a common electrode, and the second electrode comprises:
a plurality of electrode branches sequentially arranged in a first direction, wherein each of the electrode branches comprises a first end portion, a body portion, and a second end portion that are successively connected in a second direction, the body portion comprising at least one body segment, an extending direction of each of the body segments, an extending direction of the first end portion and an extending direction of the second end portion being intersected with the second direction, and the second direction being perpendicular to the first direction;
wherein the first end portions of the plurality of electrode branches are communicated with each other, the second end portions of the plurality of electrode branches are communicated with each other, the first end portions of at least two electrode branches are communicated with each other in an arc, the second end portions of at least two electrode branches are communicated with each other in an arc, and a slit is disposed between each of the two adjacent electrode branches, the slit comprising a first slit segment, a second slit segment and a third slit segment that are successively connected in the second direction, and an angle between at least one of the first slit segment and the third slit segment and the second slit segment being equal to 180 degrees;
further comprising: a thin film transistor, wherein the second electrode further comprises a connection portion;
wherein the thin film transistor is connected to the second end portion of the plurality of electrode branches by the connection portion, and is configured to supply a voltage to the plurality of electrode branches;
wherein in the plurality of electrode branches, one end of the second end portion in a second target electrode branch protrudes in a direction away from remaining electrode branches except the second target electrode branch;
wherein a protruding direction of the second end portion of the second target electrode branch is in a same direction as an inclining direction of the second end portion, and the inclining direction of the second end portion is an inclining direction of the second end portion to a side distal from the body portion;
wherein an extending direction of the connection portion does not overlap with an end portion of the third slit segment corresponding to the end of the second end portion in the second target electrode branch.

2. The pixel structure according to claim 1 , wherein the first electrode is a common electrode, and the second electrode is a pixel electrode.

3. The pixel structure according to claim 1 , wherein the body portion of each of the electrode branches comprises the body segment, and the extending direction of the body segment, the extending direction of the first end portion, and the extending direction of the second end portion are a third direction; and
in the plurality of electrode branches, one end of the first end portion in a first target electrode branch protrudes in a direction away from remaining electrode branches except the first target electrode branch;
wherein the first target electrode branch is an outermost electrode branch of the plurality of electrode branches, and a protruding direction of the first end portion of the first target electrode branch is a same direction as an inclining direction of the first end portion, and the inclining direction of the first end portion is an inclining direction of the first end portion to a side distal from the body portion.

4. The pixel structure according to claim 1 , wherein in the second target electrode branch, an angle between the extending direction of the first end portion distal from the first target electrode branch and the third direction is less than or equal to 180 degrees.

5. The pixel structure according to claim 1 , wherein a protruding end of the first target electrode branch and a protruding end of the second target electrode branch both comprise a first edge, a second edge, a third edge, and a fourth edge that are successively connected;
wherein the first edge extends in the first direction, the second edge extends in the third direction, an extending direction of the third edge is intersected with the third direction at an angle greater than or equal to 45 degrees and a length of the third edge is greater than or equal to 2 μm, and the fourth edge extends in a direction intersecting the extending direction of the third edge.

6. The pixel structure according to claim 5 , wherein an angle between the extending direction of the third edge and the third direction is equal to 45 degrees or 60 degrees.

7. The pixel structure according to claim 5 , wherein a length of the third edge is less than or equal to 5 μm.

8. The pixel structure according to claim 7 , wherein the length of the third edge is greater than or equal to 3 μm.

9. The pixel structure according to claim 1 , wherein the body portion of each of the electrode branches comprises a first body segment and a second body segment that are successively connected in the second direction;
wherein the first body segment is connected to the first end portion and the second body segment, and the second body segment is further connected to the second end portion;
wherein an extending direction of the first end and an extending direction of the first body segment are both a fourth direction, and an extending direction of the second end portion and an extending direction of the second body segment are both a fifth direction, the fourth direction being intersected with the fifth direction at an included angle between the fourth direction and the fifth direction greater than 90 degrees and less than 180 degrees.

10. The pixel structure according to claim 9 , wherein at least one of the body portions of the electrode branches further comprises a corner portion, and the first body segment is connected to the second body segment by the corner portion;
wherein the corner portion comprises a first corner portion and a second corner portion connected in the second direction, the first corner portion is connected to the first body segment, and the second corner portion is connected to the second body segment;
wherein the first corner portion extends in a sixth direction and the second corner portion extends in a seventh direction; wherein the sixth direction is intersected with the fourth direction; the seventh direction is intersected with the fifth direction; the sixth direction being intersected with the seventh direction, and an angle between the sixth direction and the seventh direction is greater than or equal to 45 degrees and less than 180 degrees; and a depth of the first corner portion in the second direction and a depth of the second corner portion in the second direction are both greater than or equal to 2 μm.

11. The pixel structure according to claim 10 , wherein an angle between the sixth direction and the seventh direction is equal to 45 degrees.

12. The pixel structure according to claim 10 , wherein a depth of the first corner portion in the second direction and a depth of the second corner segment in the second direction are both equal to 3 μm.

13. The pixel structure according to claim 10 , wherein
a depth of the first corner portion in the second direction and a depth of th

Assignees

• Hefei Boe Optoelectronics Tech
• Boe Technology Group Co Ltd

Inventors

• Zhang Qianqian
• Wang Chun
• Liu Yuqi
• Wang Hui
• Yang Hongmei
• Ren Wei

Classifications

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/134363

  for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS] · CPC title

• G02F1/133707

  Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes · CPC title