# US 12,004,398 B2 · Display panel and manufacturing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,398 B2 - Document ID: US12004398B2 - Status: Granted - Kind: B2 - Application number: 16/957,114 - Filed: 2020-04-21 - Published: 2023-04-06 - Granted: 2024-06-04 - Earliest claimed: 2020-04-08 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Junyan Hu - Web page: https://patentgrep.com/patent/US12004398B2 ## CPC - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/1315: {comprising structures specially adapted for lowering the resistance} - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/1201: {Manufacture or treatment} - H10K 59/65: OLEDs integrated with inorganic image sensors - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display panel and a manufacturing method include a substrate divided into a transparent region, a wiring changing region, and a display region; a first signal conducting wire including a first line segment and a second line segment and disposed on a plurality of insulating layers; and a planarization layer disposed on the first line segment, the second line segment, and the plurality of insulating layers. The first signal conducting wire further includes a first anode wiring disposed on the planarization layer, is located in the wiring changing region, and is electrically connected to the first line segment and the second line segment. Using signal conducting wires and wirings of the anode wirings reduces manufacturing of a layer of the signal conducting wires and a layer of the planarization layer above. ## Claims ### Claim 1 A display panel, comprising: a substrate divided into a transparent region, a wiring changing region, and a display region, wherein the wiring changing region encircles the transparent region, the display region encircles the wiring changing region, and the display region has a first position and a second position; an active layer disposed on the substrate; a plurality of insulating layers disposed on the active layer; a first signal conducting wire comprising: a first line segment disposed on the plurality of insulating layers and extending to the wiring changing region from the first position of the display region; a second line segment disposed on the plurality of insulating layers and extending to the second position of the display region from the wiring changing region; and a planarization layer disposed on the first line segment, the second line segment, and the plurality of insulating layers; wherein the first signal conducting wire comprises a first anode wiring disposed on the planarization layer and located in the wiring changing region, and the first anode wiring is electrically connected to the first line segment and the second line segment. ### Claim 2 (depends on 1) The display panel as claimed in claim 1, wherein a line width of the first line segment, a line width of the second line segment, and a line width of the first anode wiring are less than or equal to 5 um. ### Claim 3 (depends on 1) The display panel as claimed in claim 1, wherein the display panel comprises a second signal conducting wire disposed on a side of the first signal conducting wire, wherein the second signal conducting wire is disposed on the plurality of insulating layers, extends to the second position of the display region from the first position of the display region, and passes through the wiring changing region. ### Claim 4 (depends on 3) The display panel as claimed in claim 3, wherein the first anode wiring and the second signal conducting wire are arranged in an up-and-down staggered arrangement. ### Claim 5 (depends on 3) The display panel as claimed in claim 3, wherein the display panel comprises a plurality of the first anode wirings and a plurality of the second signal conducting wires, wherein at least two of the plurality of the second signal conducting wires are disposed between two adjacent first anode wirings. ### Claim 6 (depends on 3) The display panel as claimed in claim 3, wherein the display panel comprises a plurality of the first anode wirings and a plurality of the second signal conducting wires, wherein at least two of the plurality of the first anode wirings are disposed between two adjacent second signal conducting wires. ### Claim 7 (depends on 3) The display panel as claimed in claim 3, wherein an interval between a projection of the first signal conducting wire on the substrate and a projection of the second signal conducting wire on the substrate is greater than or equal to 0 um. ### Claim 8 (depends on 1) The display panel as claimed in claim 1, wherein the display panel comprises: a second signal conducting wire located on a side of the first signal conducting wire, wherein the second signal conducting wire comprises: a third line segment disposed on the plurality of insulating layers and extending to the wiring changing region from the first position of the display region; a fourth line segment disposed on the plurality of insulating layers and extending to the second position of the display region from the wiring changing region; and a second anode wiring disposed on the planarization layer and located in the wiring changing region, wherein the second anode wiring is electrically connected to the third line segment and the fourth line segment; wherein the first line segment has a first sub-line segment and a second sub-line segment, the first sub-line segment is disposed in the display region and the wiring changing region, and the second sub-line segment is disposed in the wiring changing region and is connected to the first sub-line segment and the first anode wiring; and wherein the fourth line segment has a third sub-line segment and a fourth sub-line segment, the third sub-line segment is disposed in the display region and the wiring changing region, and the fourth sub-line segment is disposed in the wiring changing region and is connected to the third sub-line segment and the second anode wiring. ### Claim 9 (depends on 8) The display panel as claimed in claim 8, wherein a position of the second sub-line segment corresponds to a position of the second anode wiring, and a position of the first anode wiring corresponds to a position of the fourth sub-line segment. ### Claim 10 (depends on 9) The display panel as claimed in claim 9, wherein a line width of the first line segment, a line width of the second line segment, and a line width of the first anode wiring are less than or equal to 5 um, and an interval between a projection of the first signal conducting wire on the substrate and a projection of the second signal conducting wire on the substrate is greater than or equal to 0 um. ### Claim 11 A manufacturing method of a display panel, comprising following steps: providing a substrate, wherein the substrate is divided into a transparent region, a wiring changing region, and a display region, wherein the wiring changing region encircles the transparent region, the display region encircles the wiring changing region, and the display region have a first position and a second position; forming an active layer and a first insulation layer on the substrate; forming a plurality of metal conducting wires and a plurality of insulating layers on the first insulation layer; forming a first line segment and a second line segment of a first signal conducting wire on the plurality of insulating layers, wherein the first line segment extends to the wiring changing region from the first position of the display region, the second line segment extends to the second position of the display region from the wiring changing region, and forming a planarization layer on the first line segment, the second line segment, and the plurality of insulating layers; and forming a first anode wiring of the first signal conducting wire on the planarization layer and in the wiring changing region, wherein the first anode wiring is electrically connected to the first line segment and the second line segment. ### Claim 12 (depends on 11) The manufacturing method of the display panel as claimed in claim 11, wherein the substrate has a first base, a first barrier layer, a second base, a second barrier layer, and a buffer layer. ### Claim 13 (depends on 12) The manufacturing method of the display panel as claimed in claim 12, wherein the first base and the second base are formed from polyimide, and the buffer layer is formed from silicon nitride or silica based material. ### Claim 14 (depends on 11) The manufacturing method of the display panel as claimed in claim 11, wherein the transparent region has a concave section. ### Claim 15 (depends on 11) The manufacturing method as claimed in claim 11, wherein the active layer is formed from low-temperature polycrystalline-silicon, and the first insulation layer is formed from silicon nitride or silica based material. ### Claim 16 (depends on 11) The manufacturing method as claimed in claim 11, wherein forming the plurality of metal conducting wires and the plurality of insulating layers on the first insulation layer comprises: forming a plurality of gate electrodes, a second insulation layer, a third insulation layer, and a fourth insulation layer on the first insulation layer of the display region. ### Claim 17 (depends on 16) The manufacturing method as claimed in claim 16, wherein the plurality of gate electrodes are formed from molybdenum. ### Claim 18 (depends on 16) The manufacturing method of the display panel as claimed in claim 16, wherein forming the first line segment and the second line segment of the first signal conducting wire on the plurality of insulating layers, and forming the planarization layer on the first line segment, the second line segment, and the plurality of insulating layers comprise: defining a plurality of electrically conductive holes in the first insulation layer, the second insulation layer, the third insulation layer, and the fourth insulation layer of the display region, and then forming a source electrode and a drain electrode on the fourth insulation layer. ### Claim 19 (depends on 11) The manufacturing method as claimed in claim 11, wherein forming the plurality of metal conducting wires and the plurality of insulating layers on the first insulation layer comprises: forming a first metal conducting wire, a second insulation layer, a second metal conducting wire, a third insulation layer, and a fourth insulation layer on the first insulation layer of the wiring changing region. ### Claim 20 (depends on 19) The manufacturing method of the display panel as claimed in claim 19, wherein the first metal conducting wire and the second metal conducting wire are formed from molybdenum, and the second insulation layer, the third insulation layer, and the fourth insulation layer are formed from silicon nitride or silica based material.