# US 12,216,366 B2 · Pixel structure, display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,216,366 B2 - Document ID: US12216366B2 - Status: Granted - Kind: B2 - Application number: 17/912,911 - Filed: 2022-04-29 - Published: 2024-06-27 - Granted: 2025-02-04 - Earliest claimed: 2022-04-29 - Assignees: Hefei Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Hefei BOE Optoelectronics Technology Co., Ltd.; BOE Technology Group Co., Ltd. - Inventors: Qianqian Zhang; Chun Wang; Yuqi Liu; Hui Wang; Hongmei Yang; Wei Ren - Web page: https://patentgrep.com/patent/US12216366B2 ## CPC - G02F 1/134372: {for fringe field switching [FFS] where the common electrode is not patterned} - G02F 1/1337: Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers - G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes} - G02F 1/1343: Electrodes {(reflective electrodes G02F1/133553)} - G02F 1/134309: {characterised by their geometrical arrangement} - G02F 1/134363: {for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]} - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 86/60: wherein the TFTs are in active matrices - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) The pixel structure according to claim 1, wherein the first electrode is a common electrode, and the second electrode is a pixel electrode. ### Claim 3 (depends on 1) 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. ### Claim 4 (depends on 1) 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. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 5) 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. ### Claim 7 (depends on 5) The pixel structure according to claim 5, wherein a length of the third edge is less than or equal to 5 μm. ### Claim 8 (depends on 7) The pixel structure according to claim 7, wherein the length of the third edge is greater than or equal to 3 μm. ### Claim 9 (depends on 1) 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. ### Claim 10 (depends on 9) 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. ### Claim 11 (depends on 10) The pixel structure according to claim 10, wherein an angle between the sixth direction and the seventh direction is equal to 45 degrees. ### Claim 12 (depends on 10) 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. ### Claim 13 (depends on 10) 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 2 μm; an orthographic projection of the first end on the substrate is overlapped with an orthographic projection of a black matrix disposed on one side of the substrate on the substrate; and an angle between the third slit segment and the second slit segment is equal to 180 degrees, an angle between the first slit segment and the second slit segment is greater than or equal to 45 degrees and less than 180 degrees, and a width of the first slit segment is greater than or equal to 3 μm in an extending direction of the first slit segment. ### Claim 14 (depends on 13) The pixel structure according to claim 13, wherein the angle between the first slit segment and the second slit segment is equal to 45 degrees. ### Claim 15 (depends on 1) The pixel structure according to claim 1, wherein an angle between the first slit segment and the second slit segment is equal to 180 degrees, and an angle between the third slit segment and the second slit segment is equal to 180 degrees. ### Claim 16 (depends on 1) The pixel structure according to claim 1, wherein the first electrode and the second electrode both comprises an indium tin oxide material. ### Claim 17 A display panel, comprising: a substrate, a plurality of pixel structures, and a color filter disposed on a side, distal from the substrate, of the pixel structures; wherein the each of the pixel structures comprises: 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. ### Claim 18 A display device, comprising: a drive circuit, and a display panel; wherein the drive circuit is connected to the display panel, and is configured to drive signals to a plurality of pixel structures in the display panel; and the display panel comprises: a substrate, the plurality of pixel structures, and a color filter disposed on a side, distal from the substrate, of the pixel structures; wherein each of the pixel structures comprises: 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.