# US 2022/0044631 A1 · Display device and driving method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0044631 A1 - Document ID: US20220044631A1 - Status: Published application - Kind: A1 - Application number: 17/199,680 - Filed: 2021-03-12 - Published: 2022-02-10 - Earliest claimed: 2020-08-05 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: SANGAN KWON; HUI NAM; SOON-DONG KIM; CHANGNOH YOON; SEUNGJAE LEE - Web page: https://patentgrep.com/patent/US20220044631A1 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 5/14: Display of multiple viewports - G09G 3/035: {for flexible display surfaces} - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2310/0213: controlling the sequence of the scanning lines with respect to the patterns to be displayed, e.g. to save power - 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 2310/04: Partial updating of the display screen - G09G 2320/0686: with two or more screen areas displaying information with different brightness or colours - G09G 2320/10: Special adaptations of display systems for operation with variable images - 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 device includes a plurality of pixels arranged in m rows and n columns, where the pixels receive write scan signals, data voltages and compensation scan signals, a plurality of write scan lines which provides the write scan signals to the pixels, a plurality of data lines which provides the data voltages to the pixels, and a plurality of compensation scan lines which provides the compensation scan signals to the pixels, wherein in h-th to p-th frames, the data voltages are applied to pixels arranged in first to i-th rows, and in h-th to (h+k)-th frames, the data voltages are applied to pixels of a row unit by increasing sequentially the number of the row unit to which the data voltages are applied in at least one row unit from an i-th row to an (i+1)-th row. ## Claims ### Claim 1 A display device comprising: a plurality of pixels arranged in m rows and n columns, wherein the pixels receive write scan signals, data voltages and compensation scan signals; a plurality of write scan lines which provides the write scan signals to the pixels; a plurality of data lines which provides the data voltages to the pixels; and a plurality of compensation scan lines which provides the compensation scan signals to the pixels, wherein in h-th to p-th frames, the data voltages are applied to pixels arranged in first to i-th rows, wherein in h-th to (h+k)-th frames, the data voltages are applied to pixels of a row unit by increasing sequentially a number of the row unit to which the data voltages are applied in at least one row unit from an i-th row to an (i+1)-th row, wherein in the h-th to p-th frames, the compensation scan signals are not applied to pixels arranged in (i+1)-th to m-th rows, and wherein m, n, h, p, k, i, and l are natural numbers, i is less than m, and (h+k) is less than p. ### Claim 2 (depends on 1) The display device of claim 1, wherein in (h+k)-th to (h+2k)-th frames, the data voltages are applied to the pixels of the row unit by decreasing sequentially the number of the row unit to which the data voltages are applied in at least one row unit from the (i+1)-th row to the i-th row. ### Claim 3 (depends on 2) The display device of claim 2, wherein in a first frame, the data voltages are provided to pixels arranged in first to m-th rows, where h is a natural number greater than or equal to 2. ### Claim 4 (depends on 3) The display device of claim 3, wherein a reference voltage having a predetermined direct-current level is applied to pixels arranged in rows excluding the pixels of the rows to which the data voltages are applied. ### Claim 5 (depends on 1) The display device of claim 1, wherein for each of first to p-th frames, the write scan signals are sequentially applied in row units to the pixels arranged in first to m-th rows. ### Claim 6 (depends on 1) The display device of claim 1, wherein the pixels arranged in the first to i-th rows display a moving image. ### Claim 7 (depends on 1) The display device of claim 1, wherein the pixels arranged in the (i+1)-th to m-th rows display a still image. ### Claim 8 (depends on 1) The display device of claim 1, wherein each of the pixels comprises: a light emitting element including an anode and a cathode; a first transistor including a first electrode which receives a first voltage, a second electrode connected to the anode, and a control electrode connected to a node; a second transistor including a first electrode connected to a corresponding data line among the data lines, a second electrode connected to the first electrode of the first transistor, and a control electrode connected to a corresponding write scan line among the write scan lines; a third transistor including a first electrode connected to the second electrode of the first transistor, a second electrode connected to the node, and a control electrode connected to a corresponding compensation scan line among the compensation scan lines; and a capacitor including a first electrode which receives the first voltage and a second electrode connected to the node. ### Claim 9 (depends on 8) The display device of claim 8, wherein the first and second transistors are p-type metal-oxide-semiconductor transistors, and the third transistor is an n-type metal-oxide-semiconductor transistor. ### Claim 10 (depends on 8) The display device of claim 8, further comprising: a plurality of initialization scan lines which provides initialization scan signals to the pixels; and a plurality of emission lines which provides emission signals to the pixels. ### Claim 11 (depends on 10) The display device of claim 10, wherein in the h-th to p-th frames, the initialization scan signals are not applied to the pixels arranged in the (i+1)-th to m-th rows. ### Claim 12 (depends on 10) The display device of claim 10, wherein each of the pixels further comprises a fourth transistor including a first electrode connected to the node, a second electrode which receives a first initialization voltage, and a control electrode connected to a corresponding initialization scan line among the initialization scan lines. ### Claim 13 (depends on 12) The display device of claim 12, wherein the fourth transistor is an n-type metal-oxide-semiconductor transistor. ### Claim 14 (depends on 10) The display device of claim 10, wherein each of the pixels further comprises: a fifth transistor including a first electrode which receives the first voltage, a second electrode connected to the first electrode of the first transistor, and a control electrode connected to a corresponding emission line among the emission lines; and a sixth transistor including a first electrode connected to the second electrode of the first transistor, a second electrode connected to the anode, and a control electrode connected to the corresponding emission line, wherein the fifth and sixth transistors are p-type metal-oxide-semiconductor transistors. ### Claim 15 (depends on 10) The display device of claim 10, wherein an initialization scan signal applied to a corresponding initialization scan line among the initialization scan lines is applied to each of the pixels before a write scan signal applied to the corresponding write scan line and a compensation scan signal applied to the corresponding compensation scan line. ### Claim 16 (depends on 8) The display device of claim 8, wherein each of the pixels comprises: a seventh transistor including a first electrode connected to the anode, a second electrode which receives a second initialization voltage, and a control electrode connected to an initialization scan line of a next stage of the corresponding initialization scan line; and a boosting capacitor connected to a first electrode connected to the corresponding write scan line and the node, wherein the seventh transistor is a p-type metal-oxide-semiconductor transistor. ### Claim 17 (depends on 1) The display device of claim 1, wherein in the h-th to (h+k)-th frames, the data voltages are applied to the pixels of the row unit by increasing sequentially in units of at least two rows from the i-th row to the (i+1)-th row. ### Claim 18 (depends on 17) The display device of claim 17, wherein in (h+k)-th to (h+2k)-th frames, the data voltages are applied to the pixels of the row unit by decreasing sequentially the number of the row unit to which the data voltages are applied in units of at least two rows from an (i+1)-th row to an i-th row. ### Claim 19 A driving method of a display device, the method comprising applying write scan signals, data voltages, and compensation scan signals to pixels arranged in m rows and n columns, wherein the applying the write scan signals, the data voltages, and the compensation scan signals to the pixels comprises: applying the data voltages to the pixels arranged in first to m-th rows in a first frame; applying the data voltages to pixels arranged in first to i-th rows in h-th to p-th frames; applying the data voltages to pixels of a row unit by increasing sequentially a number of the row unit to which the data voltages are applied in at least one row unit from an i-th row to an (i+1)-th row in h-th to (h+k)-th frames; applying the data voltages to the pixels of the row unit by decreasing sequentially the number of the row unit to which the data voltages are applied in at least one row unit from the (i+1)-th row to the i-th row in (h+k)-th to (h+2k)-th frames; and not applying the compensation scan signals to pixels arranged in (i+1)-th to m-th rows in the h-th to p-th frames, wherein m, n, h, p, k, i, and l are natural numbers, i is less than m, and (h+k) is less than p. ### Claim 20 (depends on 19) The method of claim 19, further comprising: not applying initialization scan signals to the pixels arranged in the (i+1)-th to m-th rows in the h-th to p-th frames.