Patent ID: 11930665
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. A manufacturing method of a display substrate, the display substrate having a display region and a peripheral region; the manufacturing method comprising:
providing a substrate; and
forming a first dam, a connection portion and a second dam that are located in the peripheral region and away from the display region in sequence on a side of the substrate;
wherein a height of the second dam is greater than a height of the first dam; a height of the connection portion is less than the height of the first dam; and at least a portion of the first dam, at least a portion of the connection portion and at least a portion of the second dam are of an integrative structure;
wherein the first dam includes a plurality of first blocking layers that are stacked in sequence, and the second dam includes a plurality of second blocking layers that are stacked in sequence; and a total number of the second blocking layers is greater than a total number of the first blocking layers;
the connection portion includes one or more connection layers; and a total number of the one or more connection layers is less than the total number of the first blocking layers; and
at least one of the plurality of first blocking layers proximate to the substrate and at least one of the plurality of second blocking layers proximate to the substrate are connected through at least one connection layer;
wherein a connection layer in the one or more connection layers connects a first blocking layer in the plurality of first blocking layers and a second blocking layer in the plurality of second blocking layers, and the connection layer, and the first blocking layer and the second blocking layer that are connected to the connection layer are formed through a same patterning process.