# US 12,190,807 B2 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,190,807 B2 - Document ID: US12190807B2 - Status: Granted - Kind: B2 - Application number: 18/162,840 - Filed: 2023-02-01 - Published: 2023-11-23 - Granted: 2025-01-07 - Earliest claimed: 2022-05-17 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jonghyun Choi; Minjeong Oh; Kijune Lee - Web page: https://patentgrep.com/patent/US12190807B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/873: {Encapsulations} - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - 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 apparatus includes a substrate including a display area, a pixel circuit arranged in the display area of the substrate and including a wiring, a driving transistor, a compensation transistor, a first initialization transistor, and an emission control transistor, and a light-emitting element connected to the pixel circuit. A trench indented in a width direction of the wiring is defined in at least a portion of the wiring disposed inside the pixel circuit. ## Claims ### Claim 1 A display apparatus comprising: a substrate including a display area; a pixel circuit arranged in the display area of the substrate, the pixel circuit including: a plurality of wirings; a driving transistor; a compensation transistor; and, a first initialization transistor and an emission control transistor; and a light-emitting element connected to the pixel circuit, wherein at least one of the plurality of wirings includes a trench indented in a width direction of the at least one of the plurality of wirings. ### Claim 2 (depends on 1) The display apparatus of claim 1, further comprising a connection electrode connecting an emission control semiconductor layer of the emission control transistor to a pixel electrode of the light-emitting element, wherein the emission control semiconductor layer of the emission control transistor is connected to the connection electrode through a contact hole, and the trench is provided in a wiring including a semiconductor layer disposed between an emission control gate electrode of the emission control transistor and the contact hole. ### Claim 3 (depends on 1) The display apparatus of claim 1, wherein the trench is provided in a wiring including a semiconductor layer disposed between an emission control semiconductor layer of the emission control transistor and a driving semiconductor layer of the driving transistor. ### Claim 4 (depends on 1) The display apparatus of claim 1, wherein the trench is provided in a wiring including a semiconductor layer disposed between a compensation semiconductor layer of the compensation transistor and a first initialization semiconductor layer of the first initialization transistor. ### Claim 5 (depends on 1) The display apparatus of claim 1, wherein the trench includes a first trench and a second trench, the first trench is arranged in one side of the wiring, the second trench is arranged in another side of the wiring, and the first trench faces the second trench. ### Claim 6 (depends on 1) The display apparatus of claim 1, further comprising a connection wiring arranged inside the pixel circuit, wherein the connection wiring connects semiconductor layers apart from each other, and is disposed in a different layer from the semiconductor layers, and the trench is provided in the connection wiring. ### Claim 7 (depends on 1) The display apparatus of claim 1, further comprising: a connection electrode connecting an emission control semiconductor layer of the emission control transistor to a pixel electrode of the light-emitting element, and connected to the emission control semiconductor layer through a contact hole; and a conductive layer disposed between an emission control gate electrode of the emission control transistor and the contact hole, and spaced apart with a preset interval from the emission control gate electrode in a plan view. ### Claim 8 (depends on 1) The display apparatus of claim 1, further comprising: a connection electrode connecting an emission control semiconductor layer of the emission control transistor to a pixel electrode of the light-emitting element, and connected to the emission control semiconductor layer through a contact hole; and an inorganic insulating layer in which a first groove is defined between an emission control gate electrode of the emission control transistor and the contact hole. ### Claim 9 (depends on 1) The display apparatus of claim 1, further comprising: a connection electrode connecting an emission control semiconductor layer of the emission control transistor to a pixel electrode of the light-emitting element, and connected to the emission control semiconductor layer through a contact hole; a first lower metal layer disposed between the substrate and the emission control semiconductor layer, and overlapping an emission control gate electrode of the emission control transistor; and a second lower metal layer disposed between the substrate and the emission control semiconductor layer, and overlapping the connection electrode. ### Claim 10 (depends on 1) The display apparatus of claim 1, further comprising a bridge wiring disposed in a different layer from an emission control semiconductor layer of the emission control transistor and connected to the emission control semiconductor layer, wherein a second groove is provided in an inorganic insulating layer covering the bridge wiring, and the second groove overlaps the bridge wiring. ### Claim 11 (depends on 1) The display apparatus of claim 1, further comprising: an inorganic insulating layer arranged in the display area; and an organic insulating layer disposed between the inorganic insulating layer and the light-emitting element, wherein a third groove surrounding the pixel circuit is defined in the inorganic insulating layer, and the organic insulating layer fills the third groove. ### Claim 12 A display apparatus comprising: a substrate including a display area; a pixel circuit arranged on the substrate and including: a driving transistor; a compensation transistor; a first initialization transistor; and an emission control transistor; an inorganic insulating layer arranged in the display area; a light-emitting element arranged on the inorganic insulating layer and connected to the pixel circuit; a connection electrode connecting an emission control semiconductor layer of the emission control transistor to a pixel electrode of the light-emitting element, and connected to the emission control semiconductor layer through a contact hole; and a conductive layer disposed between an emission control gate electrode of the emission control transistor and the contact hole, and spaced apart with a preset interval from the emission control gate electrode in a plan view. ### Claim 13 (depends on 12) The display apparatus of claim 12, wherein a first groove is provided in the inorganic insulating layer, and The first groove being is defined between the emission control gate electrode and the contact hole. ### Claim 14 (depends on 12) The display apparatus of claim 12, further comprising: a first lower metal layer disposed between the substrate and the emission control semiconductor layer and overlapping the emission control gate electrode; and a second lower metal layer disposed between the substrate and the emission control semiconductor layer and overlapping the connection electrode. ### Claim 15 (depends on 12) The display apparatus of claim 12, further comprising an organic insulating layer disposed between the inorganic insulating layer and the light-emitting element, wherein a third groove surrounding the pixel circuit is defined in the inorganic insulating layer, and the organic insulating layer fills the third groove. ### Claim 16 (depends on 12) The display apparatus of claim 12, wherein the pixel circuit further includes a wiring, and a trench indented in a width direction of the wiring is defined in at least a portion of the wiring disposed inside the pixel circuit. ### Claim 17 (depends on 16) The display apparatus of claim 16, wherein the trench is provided in the wiring including a semiconductor layer disposed between the emission control gate electrode and the contact hole. ### Claim 18 (depends on 16) The display apparatus of claim 16, wherein the trench is provided in the wiring including a semiconductor layer disposed between the emission control semiconductor layer of the emission control transistor and a driving semiconductor layer of the driving transistor. ### Claim 19 (depends on 16) The display apparatus of claim 16, wherein the trench is provided in the wiring including a semiconductor layer disposed between a compensation semiconductor layer of the compensation transistor and a first initialization semiconductor layer of the first initialization transistor. ### Claim 20 (depends on 16) The display apparatus of claim 16, wherein the trench includes a first trench and a second trench, the first trench is arranged in one side of the wiring, the second trench is arranged in another side of the wiring, and the first trench faces the second trench.