# US 11,910,647 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 11,910,647 B2 - Document ID: US11910647B2 - Status: Granted - Kind: B2 - Application number: 17/368,832 - Filed: 2021-07-07 - Published: 2022-05-05 - Granted: 2024-02-20 - Earliest claimed: 2020-10-29 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Hyunae Park; Sunghwan Kim; Daehyun Kim - Web page: https://patentgrep.com/patent/US11910647B2 ## CPC - H10K 59/1213: {the pixel elements being TFTs} - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/3266: Details of drivers for scan electrodes - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - G09G 2300/043: Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - 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 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 - G09G 2330/06: Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation - G09G 2330/08: Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - 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) ## Abstract A display apparatus, which may prevent a defect of a pixel due to external electrostatic discharge, includes: a first pixel including a first node; a second pixel neighboring the first pixel and including a second node; and an always-off thin-film transistor including a first electrode, a second electrode, and a gate electrode, the first electrode being connected to the first node of the first pixel, the second electrode being connected to the second node of the second pixel, in which a turn-off voltage is applied to the gate electrode. ## Claims ### Claim 1 A display apparatus comprising: a first pixel including a first node; a second pixel neighboring the first pixel and including a second node; and an always-off thin-film transistor including a first electrode, a second electrode, and a gate electrode, the first electrode being connected to the first node of the first pixel, the second electrode being connected to the second node of the second pixel, wherein a turn-off voltage is applied to the gate electrode. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein the always-off thin-film transistor includes a semiconductor pattern connecting the first node to the second node. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein the first pixel includes: a first light-emitting element; a first driving thin-film transistor configured to control a current flowing through the first light-emitting element according to a first gate-source voltage; the first node to which a driving voltage is applied; a first emission control thin-film transistor configured to connect the first node to a source of the first driving thin-film transistor in response to an emission control signal; and a first gate initialization thin-film transistor configured to apply a first initialization voltage to a gate of the first driving thin-film transistor in response to a first scan signal. ### Claim 4 (depends on 3) The display apparatus of claim 3, wherein the turn-off voltage is the driving voltage. ### Claim 5 (depends on 3) The display apparatus of claim 3, wherein the second pixel includes: a second light-emitting element; a second driving thin-film transistor configured to control a current flowing through the second light-emitting element according to a second gate-source voltage; a second gate initialization thin-film transistor configured to apply the first initialization voltage to a gate of the second driving thin-film transistor in response to a second scan signal; and the second node to which the first initialization voltage is applied when the second gate initialization thin-film transistor is turned on in response to the second scan signal. ### Claim 6 (depends on 5) The display apparatus of claim 5, wherein the second gate initialization thin-film transistor includes a plurality of thin-film transistors connected to each other in series, and the second node is arranged between the plurality of thin-film transistors. ### Claim 7 (depends on 6) The display apparatus of claim 6, wherein the second node is in a floated state when the plurality of thin-film transistors are turned off in response to the second scan signal. ### Claim 8 (depends on 5) The display apparatus of claim 5, wherein the first pixel further includes an anode initialization thin-film transistor configured to apply a second initialization voltage to an anode of the first light-emitting element in response to the second scan signal. ### Claim 9 (depends on 8) The display apparatus of claim 8, wherein the first pixel further includes: a storage capacitor including a top electrode and a bottom electrode, the driving voltage being applied to the top electrode, and the bottom electrode being connected to the gate of the first driving thin-film transistor; a scan thin-film transistor configured to transfer a data voltage to the source of the first driving thin-film transistor in response to a third scan signal; a compensation thin-film transistor configured to operate in response to the third scan signal and connected between a drain and the gate of the first driving thin-film transistor; and a second emission control thin-film transistor configured to connect the drain of the first driving thin-film transistor to the anode of the first light-emitting element in response to the emission control signal. ### Claim 10 (depends on 3) The display apparatus of claim 3, wherein the second pixel includes: a second light-emitting element; a second driving thin-film transistor configured to control a current flowing through the second light-emitting element according to a gate-source voltage; and a second gate initialization thin-film transistor configured to apply the first initialization voltage to the gate of the second driving thin-film transistor in response to a second scan signal, wherein the second node is a source or a drain of the second gate initialization thin-film transistor. ### Claim 11 (depends on 1) The display apparatus of claim 1, further comprising a data line extending in a first direction, wherein the first pixel neighbors the second pixel in the first direction. ### Claim 12 (depends on 1) The display apparatus of claim 1, wherein the first pixel is electrically insulated from the second pixel by the always-off thin-film transistor. ### Claim 13 (depends on 1) The display apparatus of claim 1, wherein the gate electrode of the always-off thin-film transistor is connected to the first electrode, and the turn-off voltage is applied to the first electrode. ### Claim 14 A display apparatus comprising: a plurality of pixels each arranged in a first direction and including a light-emitting element, a first node, and a second node, a driving voltage being applied to the first node, and a first initialization voltage being selectively applied to the second node; and a plurality of always-off thin-film transistors alternately arranged with the plurality of pixels in the first direction, wherein each of the plurality of always-off thin-film transistors physically connects the first node of a first pixel to the second node of a second pixel from among two neighboring pixels of the plurality of pixels. ### Claim 15 (depends on 14) The display apparatus of claim 14, further comprising a semiconductor pattern as one body that continuously extends in the first direction, wherein the semiconductor pattern includes a plurality of pixel areas and a plurality of transistor areas, the plurality of pixel areas being respectively included in the plurality of pixels, and the plurality of transistor areas being respectively included in the plurality of always-off thin-film transistors. ### Claim 16 (depends on 14) The display apparatus of claim 14, wherein each of the plurality of pixels includes: a driving thin-film transistor configured to control a current flowing through the light-emitting element according to a gate-source voltage; a scan thin-film transistor configured transfer a data voltage to the driving thin-film transistor in response to a first scan signal; and a storage capacitor including a first electrode and a second electrode, the first electrode being connected to a gate of the driving thin-film transistor. ### Claim 17 (depends on 16) The display apparatus of claim 16, wherein each of the plurality of pixels further includes a compensation thin-film transistor configured to connect a drain to the gate of the driving thin-film transistor in response to the first scan signal. ### Claim 18 (depends on 17) The display apparatus of claim 17, wherein each of the plurality of pixels further includes a gate initialization thin-film transistor configured to apply the first initialization voltage to the gate of the driving thin-film transistor in response to a second scan signal. ### Claim 19 (depends on 18) The display apparatus of claim 18, wherein each of the plurality of pixels further includes: a first emission control thin-film transistor configured to connect the first node to a source of the driving thin-film transistor in response to an emission control signal; and a second emission control thin-film transistor configured to connect the drain of the driving thin-film transistor to an anode of the light-emitting element in response to the emission control signal. ### Claim 20 (depends on 19) The display apparatus of claim 19, wherein each of the plurality of pixels further includes an anode initialization thin-film transistor configured to apply a second initialization voltage to the anode of the light-emitting element in response to a third scan signal.