# US 12,217,699 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 12,217,699 B2 - Document ID: US12217699B2 - Status: Granted - Kind: B2 - Application number: 18/502,554 - Filed: 2023-11-06 - Published: 2024-02-29 - Granted: 2025-02-04 - Earliest claimed: 2021-12-29 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Gyungsoon Park; Sunhwa Lee; Hyunjoon Kim; Jaeyong Jang; Kyunghoon Chung - Web page: https://patentgrep.com/patent/US12217699B2 ## CPC - G09G 3/3266: Details of drivers for scan electrodes - G09G 3/3677: {suitable for active matrices only} - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - H10K 59/131: Interconnections, e.g. wiring lines or terminals - G09G 2310/0202: Addressing of scan or signal lines - 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 pixel part including a plurality of pixels, and a gate driving circuit. Each of the plurality of pixels is driven in one first scan period and one or more second scan periods during one frame in a driving mode driven at a first driving frequency lower than a maximum driving frequency. ## Claims ### Claim 1 A display apparatus comprising a plurality of pixels, each of the plurality of pixels comprising: a first transistor; a second transistor connected between a gate of the first transistor and a data line, a gate of the second transistor being connected to a first scan line; a third transistor connected between the gate of the first transistor and a first voltage line, a gate of the third transistor being connected to a second scan line; a fourth transistor connected between a second terminal of the first transistor and a second voltage line, a gate of the fourth transistor being connected to a third scan line; a fifth transistor connected between a first terminal of the first transistor and a third voltage line, a gate of the fifth transistor being connected to a control line; a first capacitor connected between the gate of the first transistor and the second terminal of the first transistor; a second capacitor connected between the third voltage line and the second terminal of the first transistor; and an organic light-emitting diode comprising an anode connected to the second terminal of the first transistor. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein each of the plurality of pixels is driven in one first scan period and at least one second scan period during one frame in a driving mode driven at a first driving frequency lower than a maximum driving frequency, a third second scan signal is supplied to the third scan line and a control signal is supplied to the control line according to the maximum driving frequency, and a first scan signal is supplied to the first scan line and a second scan signal is supplied to the second scan line according to the first driving frequency. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein in case that the first driving frequency is 1/n of the maximum driving frequency, each of a number of the first scan signal supplied to the first scan line and a number of the second scan signal supplied to the second scan line is 1, each of a number of the third second scan signal supplied to the third scan line and a number of the control signal supplied to the control line is n, and n is a natural number. ### Claim 4 (depends on 2) The display apparatus of claim 2, wherein a timing in which the third scan signal is supplied to the pixel in the first scan period and a timing in which the third scan signal is supplied to the pixel in the second scan period are substantially identical to each other. ### Claim 5 (depends on 2) The display apparatus of claim 2, wherein the first scan period comprises a first non-light-emitting period and a first light-emitting period, and each of the at least one second scan period comprises a second non-light-emitting period and a second light-emitting period. ### Claim 6 (depends on 5) The display apparatus of claim 5, wherein the third scan signal is supplied to the third scan line before and after the first scan signal is supplied to the first scan line in the first non-light-emitting period of the first scan period, the third scan signal is supplied to the third scan line twice in the second non-light-emitting period of the second scan period, and a timing in which the third scan signal is supplied to the pixel in the first scan period and a timing in which the third scan signal is supplied to the pixel in the second scan period are substantially identical to each other. ### Claim 7 (depends on 5) The display apparatus of claim 5, wherein the first scan period comprises: a first period in which the second scan signal and the third scan signal each have a gate-on voltage level, and the first scan signal and the control signal each have a gate-off voltage level; a second period in which the first scan signal and the third scan signal each have a gate-off voltage level, and the second scan signal and the control signal each have a gate-on voltage level; a third period in which the first scan signal has a gate-on voltage level, and the second scan signal, the third scan signal, and the control signal each have a gate-off voltage level; and a fourth period in which the first scan signal, the second scan signal, and the third scan signal each have a gate-off voltage level, and the control signal has a gate-on voltage level, and wherein the fourth period is the first light-emitting period. ### Claim 8 (depends on 7) The display apparatus of claim 7, wherein the at least one second scan period comprises a fifth period in the second non-light-emitting period, and in the fifth period, the second scan signal has a gate-on voltage level and the first scan signal, the third scan signal, and the control signal each have a gate-off voltage level. ### Claim 9 (depends on 8) The display apparatus of claim 8, wherein the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and the control signal is shifted from the gate-off voltage level to the gate-on voltage level once in the second scan period. ### Claim 10 (depends on 8) The display apparatus of claim 8, wherein the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the second scan period. ### Claim 11 (depends on 8) The display apparatus of claim 8, wherein the first scan period further comprises, between the third period and the fourth period, a sixth period in which the first scan signal, the second scan signal, and the control signal each have the gate-off voltage level, and the third scan signal has the gate-on voltage level, and the at least one second scan period further comprises, subsequent to the fifth period before the control signal is shifted from the gate-off voltage level to the gate-on voltage level, a seventh period in which the third scan signal has the gate-on voltage level. ### Claim 12 (depends on 11) The display apparatus of claim 11, wherein the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and the control signal is shifted from the gate-off voltage level to the gate-on voltage level once in the second scan period. ### Claim 13 (depends on 11) The display apparatus of claim 11, wherein the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the second scan period. ### Claim 14 (depends on 8) The display apparatus of claim 8, wherein each of the plurality of pixels further comprises a third capacitor connected between the anode and a fourth voltage line. ### Claim 15 (depends on 14) The display apparatus of claim 14, wherein a voltage supplied to the fourth voltage line is a voltage supplied to a cathode of the organic light-emitting diode or a voltage greater than a voltage supplied to the second voltage line. ### Claim 16 (depends on 14) The display apparatus of claim 14, wherein the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and the control signal is shifted from the gate-off voltage level to the gate-on voltage level once in the second scan period. ### Claim 17 (depends on 14) The display apparatus of claim 14, wherein the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the second scan period. ### Claim 18 (depends on 14) The display apparatus of claim 14, wherein the first scan period further comprises, between the third period and the fourth period, a sixth period in which the first scan signal, the second scan signal, and the control signal each have the gate-off voltage level, and the third scan signal has the gate-on voltage level, and the at least one second scan period further comprises, subsequent to the fifth period before the control signal is shifted from the gate-off voltage level to the gate-on voltage level, a seventh period in which the third scan signal has the gate-on voltage level. ### Claim 19 (depends on 18) The display apparatus of claim 18, wherein a fourth voltage of a low level is supplied to the fourth voltage line from before a start of the first period to after the sixth period in the first scan period, the fourth voltage of a low level is supplied to the fourth voltage line from before a start of the fifth period to after the seventh period in the at least one second scan period, and the fourth voltage of a high level is supplied to the fourth voltage line during the first light-emitting period and the second light-emitting period. ### Claim 20 (depends on 18) The display apparatus of claim 18, wherein a timing in which the third scan signal is supplied to the pixel in the first scan period and a timing in which the third scan signal is supplied to the pixel in the second scan period are substantially identical to each other. ### Claim 21 (depends on 1) The display apparatus of claim 1, wherein each of the first transistor to the fifth transistor is an N-channel oxide semiconductor transistor.