US 12,284,866 B2
Display substrate with base substrate having grooved dielectric layer, fabrication method thereof, display panel and display apparatus
Zhongyuan Sun, Beijing (CN); Wei Wang, Beijing (CN); and Lu Wang, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Sep. 8, 2023, as Appl. No. 18/243,727.
Application 18/243,727 is a continuation of application No. 17/827,385, filed on May 27, 2022, granted, now 11,785,801.
Application 17/827,385 is a continuation of application No. 16/330,931, granted, now 11,380,866, issued on Jul. 5, 2022, previously published as PCT/CN2018/081935, filed on Apr. 4, 2018.
Claims priority of application No. 201810076879.6 (CN), filed on Jan. 26, 2018.
Prior Publication US 2023/0422544 A1, Dec. 28, 2023
Int. Cl. H10K 50/844 (2023.01); H10K 59/12 (2023.01); H10K 71/00 (2023.01); H10K 77/10 (2023.01)
CPC H10K 50/844 (2023.02) [H10K 71/00 (2023.02); H10K 77/10 (2023.02); H10K 59/12 (2023.02); H10K 71/851 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A display substrate, comprising
a base substrate,
a display structure in a display area of the base substrate,
at least one blocking structure in a non-display area surrounding the display area of the base substrate, the at least one blocking structure comprising a first blocking structure;
wherein the base substrate includes a dielectric layer, the display structure is disposed on the dielectric layer, and a surface of the dielectric layer on a side of the display structure is provided with a groove recessed inside of the dielectric layer;
the first blocking structure includes a protrusion disposed in the groove;
a height of the protrusion is larger than a depth of the groove, or a surface of the protrusion is higher than a surface of the dielectric layer;
a gap is between a sidewall of the protrusion and a sidewall of the groove;
the display substrate includes a first water-blocking layer covering the dielectric layer and the protrusion, the first water-blocking layer covering the sidewall of the protrusion and the sidewall of the groove;
the first water-blocking layer is disposed on the base substrate, and the first water-blocking layer covers the display structure and the at least one blocking structure; and
a thickness of the first water-blocking layer at a boundary of an interface between the protrusion and the base substrate is smaller than a thickness of the first water-blocking layer covering a surface of the protrusion farthest away from the base substrate.