US 12,464,909 B2
Display substrate, preparation method therefor, and display apparatus
Mei Li, Beijing (CN); and Libin Liu, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN)
Appl. No. 17/630,172
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Mar. 22, 2021, PCT No. PCT/CN2021/082057
§ 371(c)(1), (2) Date Sep. 29, 2022,
PCT Pub. No. WO2022/198377, PCT Pub. Date Sep. 29, 2022.
Prior Publication US 2023/0380227 A1, Nov. 23, 2023
Int. Cl. H10K 59/131 (2023.01); H10K 59/12 (2023.01); H10K 59/121 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 59/1201 (2023.02); H10K 59/1213 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display substrate, comprising a plurality of sub-pixels in a plane parallel to the display substrate, wherein at least one of the sub-pixels comprises a pixel driving circuit, the pixel driving circuit at least comprises a drive transistor; an active layer of the drive transistor comprises a channel region, the channel region comprises a first channel terminal segment extending in a first direction, an intermediate segment connected to the first channel terminal segment, and a second channel terminal segment connected to the intermediate segment; a first end of the first channel terminal segment away from the intermediate segment has a first width, and a second end of the first channel terminal segment close to the intermediate segment has a second width; the first width is greater than the second width; the first width and the second width are dimensions of the first channel terminal segment in a second direction, and the first direction is intersected with the second direction,
wherein the intermediate segment of the channel region comprises a second channel segment, a third channel segment, and a fourth channel segment; the second end of the first channel terminal segment is connected to a first end of the second channel segment; a second end of the second channel segment extends in a direction opposite to the second direction, to be connected to a first end of the third channel segment; a second end of the third channel segment extends in the first direction, to be connected to a first end of the fourth channel segment; a second end of the fourth channel segment extends in the second direction, to be connected to a first end of the second channel terminal segment; and a second end of the second channel terminal segment is connected to the second region of the active layer.