US 12,444,361 B2
Display substrate and driving method thereof
Pan Xu, Beijing (CN); Miao Liu, Beijing (CN); Xing Yao, Beijing (CN); Dandan Zhou, Beijing (CN); and Cheng Xu, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/576,254
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Dec. 23, 2022, PCT No. PCT/CN2022/141494
§ 371(c)(1), (2) Date Jan. 3, 2024,
PCT Pub. No. WO2024/130707, PCT Pub. Date Jun. 27, 2024.
Prior Publication US 2025/0087155 A1, Mar. 13, 2025
Int. Cl. G09G 3/32 (2016.01); G09G 3/3233 (2016.01); H10K 59/121 (2023.01); H10K 59/122 (2023.01); H10K 59/131 (2023.01)
CPC G09G 3/3233 (2013.01) [H10K 59/1213 (2023.02); H10K 59/1216 (2023.02); H10K 59/122 (2023.02); H10K 59/1315 (2023.02); G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0847 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A display substrate, comprising a plurality of sub-pixels, wherein each of the plurality of sub-pixels comprises a pixel circuit and a light-emitting element, the light-emitting element is electrically connected to the pixel circuit, the pixel circuit is configured to drive the light-emitting element, and the pixel circuit comprises:
a driving circuit, comprising a control terminal, a first terminal and a second terminal, the first terminal of the driving circuit being electrically connected to a first electrode of the light-emitting element;
a light-emitting control circuit, electrically connected to the second terminal of the driving circuit and configured to transmit a first power supply voltage to the second terminal of the driving circuit in response to a light-emitting control signal;
a data writing circuit, electrically connected to the control terminal of the driving circuit and configured to write a data signal into the control terminal of the driving circuit in response to a first scan signal;
a first reset circuit, electrically connected to the control terminal of the driving circuit and configured to transmit a reference voltage to the control terminal of the driving circuit in response to a second scan signal;
a second reset circuit, electrically connected to the first electrode of the light-emitting element and configured to transmit an initialization voltage to the first electrode of the light-emitting element in response to a third scan signal;
a first storage circuit, a first terminal of the first storage circuit being electrically connected to the control terminal of the driving circuit, a second terminal of the first storage circuit being electrically connected to the first terminal of the driving circuit, and the first storage circuit being configured to store the data signal; and
a second storage circuit, a first terminal of the second storage circuit being electrically connected to the first electrode of the light-emitting element and a second terminal of the second storage circuit being electrically connected to a second electrode of the light-emitting element,
the display substrate further comprising: an initialization line, a reference voltage line, and a first power supply line, wherein the initialization line is configured to provide the initialization voltage, the reference voltage line is configured to provide the reference voltage, and the first power supply line is configured to provide the first power supply voltage,
the initialization line comprises an initialization signal line, the reference voltage line comprises a reference voltage signal line, and the first power supply line comprises a first power supply signal line,
each of the initialization signal line, the reference voltage signal line, and the first power supply signal line extends in a first direction, and the initialization signal line, the reference voltage signal line, and the first power supply signal line are arranged in a second direction, wherein the first direction intersects with the second direction,
wherein the initialization line further comprises an initialization connection line, the reference voltage line further comprises a reference voltage connection line, and the first power supply line further comprises a first power supply connection line, the initialization connection line is connected to the initialization signal line, the reference voltage connection line is connected to the reference voltage signal line, and the first power supply connection line is connected to the first power supply signal line,
wherein each of the initialization connection line, the reference voltage connection line, and the first power supply connection line extends in the second direction, and the first power supply connection line, the reference voltage connection line, and the initialization connection line are arranged in the first direction,
the display substrate further comprising a pixel-defining layer, wherein the pixel-defining layer comprises a plurality of openings, each of the plurality of openings is configured to expose at least a portion of the first electrode of the light-emitting element,
the plurality of openings comprise a first opening, a second opening, and a third opening, wherein an orthographic projection of the first opening on the base substrate overlaps an orthographic projection of the first power supply connection line on the base substrate, an orthographic projection of the second opening on the base substrate overlaps an orthographic projection of the reference voltage connection line on the base substrate, and an orthographic projection of the third opening on the base substrate overlaps an orthographic projection of the initialization connection line on the base substrate,
wherein an area of the first opening is greater than an area of the third opening, the area of the third opening is greater than an area of the second opening, a width of the first power supply connection line is greater than a width of the initialization connection line, and the width of the initialization connection line is greater than a width of the reference voltage connection line.