# US 12,190,815 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 12,190,815 B2 - Document ID: US12190815B2 - Status: Granted - Kind: B2 - Application number: 18/492,901 - Filed: 2023-10-24 - Published: 2024-02-15 - Granted: 2025-01-07 - Earliest claimed: 2021-09-24 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Byeong Hee Won; Seong Won Kim; In Seon Yoon - Web page: https://patentgrep.com/patent/US12190815B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/3266: Details of drivers for scan electrodes - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/1315: {comprising structures specially adapted for lowering the resistance} - H10K 59/35: comprising red-green-blue [RGB] subpixels - G09G 3/035: {for flexible display surfaces} - G09G 2300/0413: Details of dummy pixels or dummy lines in flat panels - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2310/0251: Precharge or discharge of pixel before applying new pixel voltage - G09G 2310/0262: The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes - H10K 59/88: Dummy elements, i.e. elements having non-functional features - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device includes a display area, and a dummy area disposed on one side of the display area, where each of the display area and the dummy area includes a first island pattern and a second island pattern disposed to be spaced apart from each other, and a connection pattern connecting the first island pattern and the second island pattern to each other, and the dummy area includes a dummy common electrode and a common connection electrode electrically connected to the dummy common electrode, which are disposed in each of the first island pattern and the second island pattern thereof. ## Claims ### Claim 1 A display device comprising: a display area; and a dummy area disposed on one side of the display area, wherein each of the display area and the dummy area includes: a first island portion and a second island portion disposed to be spaced apart from each other; and a connection portion connecting the first island portion and the second island portion to each other, and the dummy area includes a dummy electrode and a connection electrode electrically connected to the dummy electrode, which are disposed in each of the first island portion and the second island portion thereof. ### Claim 2 (depends on 1) The display device of claim 1, wherein the display area includes a light emitting element disposed in in each of the first island portion and the second island portion thereof, wherein the light emitting element includes a first electrode of the light emitting element, an interposition layer disposed on the first electrode of the light emitting element, and a second electrode of the light emitting element disposed on the interposition layer. ### Claim 3 (depends on 2) The display device of claim 2, wherein the dummy area includes a dummy interposition layer disposed in each of the first island portion and the second island portion thereof, wherein the dummy interposition layer includes a same material as the interposition layer. ### Claim 4 (depends on 3) The display device of claim 3, wherein the second electrode of the light emitting element is connected to the connection electrode through a contact hole defined through an insulating layer interposed between the second electrode of the light emitting element and the connection electrode. ### Claim 5 (depends on 4) The display device of claim 4, wherein the contact hole does not overlap the dummy interposition layer. ### Claim 6 (depends on 3) The display device of claim 3, wherein the dummy area includes a first power line disposed in each of the first island portion and the second island portion thereof, wherein a first power voltage is applied to the first power line, and the first power line is connected to the connection electrode. ### Claim 7 (depends on 6) The display device of claim 6, wherein the first power line is disposed in a same layer as the connection electrode, and the first power line and the connection electrode include a same material as each other. ### Claim 8 (depends on 7) The display device of claim 7, wherein the first power line overlaps the dummy interposition layer. ### Claim 9 (depends on 6) The display device of claim 6, wherein the first power line includes a first sub-power line and a second sub-power line overlapping each other. ### Claim 10 (depends on 9) The display device of claim 9, wherein the first sub-power line is disposed in a same layer as the connection electrode, and the first sub-power line and the connection electrode include a same material as each other. ### Claim 11 (depends on 10) The display device of claim 10, wherein the first sub-power line is disposed on the first island portion, the second island portion, and the connection portion in the dummy area, and the second sub-power line is disposed on the first island portion and the second island portion. ### Claim 12 (depends on 6) The display device of claim 6, wherein the display area includes a pixel driver which drives the light emitting element, and the pixel driver includes: a driving transistor; a first transistor which initializes a gate electrode of the driving transistor to an initialization voltage of an initialization voltage line in response to a scan initialization signal of a scan initialization line; a second transistor which applies a data voltage to the gate electrode of the driving transistor in response to a scan write signal of a scan write line; and a third transistor which connects a first electrode of the driving transistor to the first electrode of the light emitting element in response to an emission signal of an emission line. ### Claim 13 (depends on 12) The display device of claim 12, wherein in each of the first island portion and the second island portion of the dummy area, the scan initialization line, the scan write line, and the emission line cross the first power line. ### Claim 14 (depends on 13) The display device of claim 13, wherein the scan initialization line, the scan write line, and the emission line overlap the dummy interposition layer. ### Claim 15 A display device comprising: a display area; and a dummy area disposed on one side of the display area, wherein each of the display area and the dummy area includes: a first island portion and a second island portion disposed to be spaced apart from each other; and a connection portion connecting the first island portion and the second island portion to each other, the display area includes a light emitting element disposed in each of the first island portion and the second island portion thereof, wherein the light emitting element includes a first electrode, an interposition layer disposed on the first electrode, and a second electrode disposed on the interposition layer, the dummy area includes a dummy interposition layer disposed in each of the first island portion and the second island portion thereof, wherein the dummy interposition layer includes a same material as the interposition layer, and the connection portion is bent or unbent. ### Claim 16 (depends on 15) The display device of claim 15, wherein the dummy area includes a first power line disposed in each of the first island portion and the second island portion thereof, wherein a first power voltage is applied to the first power line. ### Claim 17 (depends on 16) The display device of claim 16, wherein the dummy area further includes a first power connection line connected to the first power line, and the first power connection line includes: a first sub-power connection line disposed on the connection portion; and a second sub-power connection line disposed on the first island portion, and the first sub-power connection line is connected to the second sub-power connection line through a first contact hole defined through an insulating layer interposed between the first sub-power connection line and the second sub-power connection line. ### Claim 18 (depends on 17) The display device of claim 17, wherein the second sub-power connection line overlaps the dummy interposition layer. ### Claim 19 (depends on 17) The display device of claim 17, wherein the first power connection line further includes a third sub-power connection line disposed on the first island portion, and the first sub-power connection line is connected to the third sub-power connection line through a second contact hole defined through an insulating layer interposed between the first sub-power connection line and the third sub-power connection line.