# US 2025/0221202 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0221202 A1 - Document ID: US20250221202A1 - Status: Published application - Kind: A1 - Application number: 18/894,808 - Filed: 2024-09-24 - Published: 2025-07-03 - Earliest claimed: 2023-12-28 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Youngsung CHO; Jaehoon JEONG - Web page: https://patentgrep.com/patent/US20250221202A1 ## CPC - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10D 86/423: {comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO} - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/65: OLEDs integrated with inorganic image sensors - H10D 86/421: {having a particular composition, shape or crystalline structure of the active layer} - H10D 86/481: {integrated with passive devices, e.g. auxiliary capacitors} - H10D 86/60: wherein the TFTs are in active matrices - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract A display device according to an example of the present disclosure can include a display area having a first display area capable of transmitting light and a second display area located outside the first display area, a first pixel circuit disposed in the second display area, a first pixel electrode of a first light emitting element disposed in the first display area, and a connection line electrically connecting the first pixel electrode and the first pixel circuit. ## Claims ### Claim 1 A display device comprising: a display area including a first display area capable of transmitting light, and a second display area located outside the first display area; a first pixel circuit disposed in the second display area; a first pixel electrode of a first light emitting element disposed in the first display area; and a connection line electrically connecting the first pixel electrode and the first pixel circuit, wherein the display area further includes a third display area located outside the second display area, and wherein the connection line comprises: a first connection line disposed in the first display area and the second display area and including a first transparent metal, and a second connection line disposed in the second display area, disposed to contact an upper surface of the first connection line, and including a first metal. ### Claim 2 (depends on 1) The display device of claim 1, further comprising an optical sensor overlapping with the first display area and receiving lights passing through the first display area. ### Claim 3 (depends on 1) The display device of claim 1, further comprising a common electrode commonly disposed in the first display area and the second display area, wherein the common electrode includes one or more openings in the first display area. ### Claim 4 (depends on 3) The display device of claim 3, wherein a plurality of pixel circuits are disposed in the second display area, wherein the connection line is formed as a plurality of connection lines electrically connecting the plurality of pixel circuits and the plurality of pixel electrodes, wherein the plurality of connection lines are tied together and arranged into one bundle, and wherein the one bundle is arranged tortuously while avoiding the one or more openings within the first display area. ### Claim 5 (depends on 4) The display device of claim 4, wherein a size of the one bundle becomes smaller as a distance from the second display area increases. ### Claim 6 (depends on 1) The display device of claim 1, further comprising: a storage capacitor disposed in the second display area and including a first capacitor electrode and a second capacitor electrode, wherein the first metal is a metal included in at least one of the first capacitor electrode and the second capacitor electrode. ### Claim 7 (depends on 6) The display device of claim 6, wherein the first capacitor electrode includes: a first lower capacitor electrode including a first transparent gate metal; and a first upper capacitor electrode disposed in contact with an upper surface of the first lower capacitor electrode and including a first gate metal, wherein the second capacitor electrode includes: a second lower capacitor electrode including a second transparent gate metal; and a second upper capacitor electrode disposed in contact with an upper surface of the second lower capacitor electrode and including a second gate metal, wherein the first transparent metal includes the first transparent gate metal or the second transparent gate metal, and wherein the first metal includes the first gate metal or the second gate metal. ### Claim 8 (depends on 1) The display device of claim 1, further comprising: a plurality of transistors disposed in the second display area and including a gate electrode, a source electrode and a drain electrode, wherein the gate electrode includes a first gate metal or a third gate metal, and wherein the first metal includes the first gate metal or the third gate metal. ### Claim 9 (depends on 8) The display device of claim 8, wherein the gate electrode includes: a lower gate electrode including a first transparent gate metal or a third transparent gate metal; and an upper gate electrode disposed in contact with an upper surface of the lower gate electrode and including the first gate metal or the third gate metal, wherein the first transparent metal includes the first transparent gate metal or the third transparent gate metal. ### Claim 10 (depends on 8) The display device of claim 8, wherein the plurality of transistors include a first transistor including an active layer made of a silicon-based semiconductor material and a gate electrode including the first gate metal, and wherein the first metal includes the first gate metal. ### Claim 11 (depends on 8) The display device of claim 8, wherein the plurality of transistors include a second transistor including an active layer made of an oxide-based semiconductor material and a gate electrode including the third gate metal, and wherein the first metal includes the third gate metal. ### Claim 12 (depends on 1) The display device of claim 1, further comprising: another pixel electrode of another light emitting element disposed in the first display area; and an extension connection line disposed in the first display area and connecting the first pixel electrode and the another pixel electrode. ### Claim 13 (depends on 12) The display device of claim 12, wherein the extension connection line includes a second transparent metal different from the first transparent metal. ### Claim 14 (depends on 13) The display device of claim 13, wherein the first pixel circuit includes a transistor disposed in the second display area and including a gate electrode, a source electrode, and a drain electrode, wherein the source electrode includes: an upper source electrode including a first source-drain metal; and a lower source electrode disposed below the upper source electrode, in contact with the upper source electrode, and including a first transparent source-drain metal, wherein the drain electrode includes: an upper drain electrode including the first source-drain metal; and a lower drain electrode disposed below the upper drain electrode, in contact with the upper drain electrode, and including the first transparent source-drain metal, and wherein the second transparent metal includes the first transparent source-drain metal. ### Claim 15 (depends on 13) The display device of claim 13, further comprising a relay electrode electrically connected with a second pixel electrode of a second light emitting element disposed in the second display area, wherein the relay electrode includes: an upper relay electrode including a second source-drain metal; and a lower relay electrode disposed below the upper relay electrode, in contact with the upper relay electrode, and including a second transparent source-drain metal, and wherein the second transparent metal includes the second transparent source-drain metal. ### Claim 16 (depends on 1) The display device of claim 1, wherein a horizontal line is disposed in the display area, extends in a first direction, and includes a horizontal line metal, wherein a vertical line is disposed in the display area, extending in a second direction different from the first direction, and includes a vertical line metal different from the horizontal line metal, and wherein a layer on which the first transparent metal is disposed is located below a layer on which the horizontal wiring metal is disposed. ### Claim 17 (depends on 1) The display device of claim 1, wherein a horizontal line is disposed in the display area, extends in a first direction, and includes horizontal line metal, wherein a vertical line is disposed in the display area, extending in a second direction different from the first direction, and includes a vertical line metal different from the horizontal line metal, and wherein the first metal includes the vertical line metal. ### Claim 18 (depends on 16) The display device of claim 16, wherein the horizontal line and the vertical line are disposed while bypassing the first display area. ### Claim 19 A display device comprising: a substrate including a display area configured to display an image and a non-display area configured to not display an image, the display area including a first display area capable of transmitting light and a second display area located outside the first display area; a first pixel circuit disposed on the substrate and in the second display area; a first pixel electrode of a first light emitting element disposed on the substrate and in the first display area; and a connection line electrically connecting the first pixel electrode and the first pixel circuit, wherein the connection line is a single metal layer in the first display area, and is a multiple metal layer in the second display area. ### Claim 20 (depends on 19) The display device of claim 19, wherein the connection line comprises: a first connection line disposed in the first display area and the second display area and including a first transparent metal, and a second connection line disposed in the second display area, disposed to contact an upper surface of the first connection line, and including a first metal, wherein the single metal layer includes the first transparent metal, and wherein the multi metal layer includes both the first transparent metal and the first metal.