# US 12,225,806 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,806 B2 - Document ID: US12225806B2 - Status: Granted - Kind: B2 - Application number: 17/451,502 - Filed: 2021-10-20 - Published: 2022-05-19 - Granted: 2025-02-11 - Earliest claimed: 2020-11-17 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Sho Yanagisawa; Tetsuo Morita; Kenji Harada; Hiroshi Tabatake; Hideyuki Takahashi - Web page: https://patentgrep.com/patent/US12225806B2 ## CPC - H10K 59/88: Dummy elements, i.e. elements having non-functional features - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract According to one embodiment, a display device includes a substrate, first and second insulating layers, first and second pixel electrodes, first and second organic layers, first and second feed lines, first and second partitions, and a common electrode including first and second parts covering the first and second organic layers. The first organic layer is between the partitions. The second feed line and the second partition are located between the organic layers. The partitions are shaped such that a width of an upper part is greater than a width of a lower part. The first part is in contact with the first feed line between the first partition and the first organic layer. ## Claims ### Claim 1 A display device comprising: a substrate; a first insulating layer arranged on the substrate; a first pixel electrode arranged on the first insulating layer in a pixel located in a display region; a second pixel electrode arranged on the first insulating layer in a dummy pixel located in a surrounding region outside the display region; a second insulating layer arranged on the first insulating layer, and having an opening overlapping the first pixel electrode; a first organic layer arranged in the pixel, and being in contact with the first pixel electrode through the opening; a second organic layer arranged in the dummy pixel; a first feed line and a second feed line arranged on the second insulating layer; a first partition arranged on the first feed line; a second partition arranged on the second feed line; and a common electrode including a first part covering the first organic layer and a second part covering the second organic layer, wherein the first organic layer is located between the first partition and the second partition, and is separated from the first partition and the second partition, the second feed line and the second partition are located between the first organic layer and the second organic layer, the first partition and the second partition each are shaped such that a width of an upper part is greater than a width of a lower part, and the first part is in contact with the first feed line between the first partition and the first organic layer. ### Claim 2 (depends on 1) The display device of claim 1, wherein the second organic layer is separated from the second partition, and the second part is in contact with the second feed line between the second partition and the second organic layer. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first part is in contact with the second feed line between the second partition and the first organic layer. ### Claim 4 (depends on 1) The display device of claim 1, wherein the first part is not in contact with the second feed line. ### Claim 5 (depends on 4) The display device of claim 4, wherein the second feed line has a first end part close to the first organic layer and a second end part close to the second organic layer, the first end part is covered with the second partition, and the second end part is not covered with the second partition. ### Claim 6 (depends on 1) The display device of claim 1, wherein the common electrode further includes a third part arranged on each of the upper parts of the first partition and the second partition, and the third part is separated from the first part and the second part. ### Claim 7 (depends on 1) The display device of claim 1, further comprising: a first conductive layer arranged on the second insulating layer in the surrounding region, and connected to the first feed line and the second feed line; and a second conductive layer arranged between the first insulating layer and the second insulating layer in the surrounding region, wherein the second insulating layer has a first contact hole in the surrounding region, and the first conductive layer is in contact with the second conductive layer through the first contact hole. ### Claim 8 (depends on 7) The display device of claim 7, further comprising a third conductive layer arranged between the substrate and the first insulating layer in the surrounding region, wherein the first insulating layer has a second contact hole in the surrounding region, and the second conductive layer is in contact with the third conductive layer through the second contact hole. ### Claim 9 (depends on 7) The display device of claim 7, wherein the common electrode further includes a fourth part arranged in the surrounding region, and the fourth part covers the first conductive layer. ### Claim 10 (depends on 9) The display device of claim 9, further comprising a third organic layer arranged on the first conductive layer, wherein the fourth part covers the third organic layer. ### Claim 11 A display device comprising: a substrate; a first insulating layer arranged on the substrate; a first pixel electrode arranged on the first insulating layer in a pixel located in a display region; a second pixel electrode arranged on the first insulating layer in a dummy pixel located in a surrounding region outside the display region; a second insulating layer arranged on the first insulating layer, and having an opening overlapping the first pixel electrode; a first organic layer arranged in the pixel, and being in contact with the first pixel electrode through the opening; a second organic layer arranged in the dummy pixel; a first feed line and a second feed line arranged on the second insulating layer; a first partition arranged on the first feed line; a second partition arranged on the second feed line; and a common electrode including a first part covering the first organic layer and a second part covering the second organic layer, wherein the first organic layer is located between the first partition and the second partition, and is separated from the first partition and the second partition, the second feed line and the second partition are located between the first organic layer and the second organic layer, the first partition and the second partition each are shaped such that a width of an upper part is greater than a width of a lower part, the first part is in contact with the first feed line between the first partition and the first organic layer, and the first part is in contact with the second feed line between the second partition and the first organic layer. ### Claim 12 (depends on 11) The display device of claim 11, wherein the common electrode further includes a third part arranged on each of the upper parts of the first partition and the second partition, and the third part is separated from the first part and the second part. ### Claim 13 (depends on 12) The display device of claim 12, further comprising: a first conductive layer arranged on the second insulating layer in the surrounding region, and connected to the first feed line and the second feed line; and a second conductive layer arranged between the first insulating layer and the second insulating layer in the surrounding region, wherein the second insulating layer has a first contact hole in the surrounding region, and the first conductive layer is in contact with the second conductive layer through the first contact hole. ### Claim 14 (depends on 13) The display device of claim 13, further comprising a third conductive layer arranged between the substrate and the first insulating layer in the surrounding region, wherein the first insulating layer has a second contact hole in the surrounding region, and the second conductive layer is in contact with the third conductive layer through the second contact hole. ### Claim 15 A display device comprising: a substrate; a first insulating layer arranged on the substrate; a first pixel electrode arranged on the first insulating layer in a pixel located in a display region; a second pixel electrode arranged on the first insulating layer in a dummy pixel located in a surrounding region outside the display region; a second insulating layer arranged on the first insulating layer, and having an opening overlapping the first pixel electrode; a first organic layer arranged in the pixel, and being in contact with the first pixel electrode through the opening; a second organic layer arranged in the dummy pixel; a first feed line and a second feed line arranged on the second insulating layer; a first partition arranged on the first feed line; a second partition arranged on the second feed line; and a common electrode including a first part covering the first organic layer and a second part covering the second organic layer, wherein the first organic layer is located between the first partition and the second partition, and is separated from the first partition and the second partition, the second feed line and the second partition are located between the first organic layer and the second organic layer, the first partition and the second partition each are shaped such that a width of an upper part is greater than a width of a lower part, and the second feed line has a first end part close to the first organic layer and a second end part close to the second organic layer, the first end part is covered with the second partition, and the second end part is not covered with the second partition. ### Claim 16 (depends on 15) The display device of claim 15, wherein the common electrode further includes a third part arranged on each of the upper parts of the first partition and the second partition, and the third part is separated from the first part and the second part. ### Claim 17 (depends on 16) The display device of claim 16, further comprising: a first conductive layer arranged on the second insulating layer in the surrounding region, and connected to the first feed line and the second feed line; and a second conductive layer arranged between the first insulating layer and the second insulating layer in the surrounding region, wherein the second insulating layer has a first contact hole in the surrounding region, and the first conductive layer is in contact with the second conductive layer through the first contact hole. ### Claim 18 (depends on 17) The display device of claim 17, further comprising a third conductive layer arranged between the substrate and the first insulating layer in the surrounding region, wherein the first insulating layer has a second contact hole in the surrounding region, and the second conductive layer is in contact with the third conductive layer through the second contact hole.