Display substrate having a display region and a non-display region surrounding the display region and method for manufacturing the same

A display device, comprising a display substrate, wherein the display substrate comprises:

• a display region and a non-display region surrounding the display region;
• the display substrate further comprises:
• an organic functional layer comprising a first portion located in the display region and a second portion located in the non-display region, wherein the second portion is provided with at least one isolation groove, and is partitioned into at least two separate sub-portions by the at least one isolation groove, and the at least two sub-portions are arranged sequentially along a first direction from the display region to a boundary of the display substrate;
• wherein the second portion is provided with a first isolation groove and a second isolation groove, and the first isolation groove is located between the display region and the second isolation groove;
• the second portion is partitioned by the first isolation groove and the second isolation groove into a first sub-portion, a second sub-portion and a third sub-portion, and the first sub-portion, the second sub-portion and the third sub-portion are separate from each other, and are sequentially arranged in a spaced manner along the first direction;
• wherein the display substrate further comprises:
• a circuit structure located in the non-display region, wherein an orthographic projection of the circuit structure onto a base substrate of the display substrate is covered by an orthographic projection of the second sub-portion onto the base substrate;
• a first signal line structure located in the non-display region, wherein an orthographic projection of the first signal line structure onto the base substrate is covered by an orthographic projection of the first sub-portion onto the base substrate;
• a second signal line structure located in the non-display region, wherein an orthographic projection of the second signal line structure onto the base substrate is covered by an orthographic projection of the third sub-portion onto the base substrate;
• wherein along the first direction, both a width of the first sub-portion and a width of the third sub-portion are smaller than a width of the second sub-portion.

A method for manufacturing a display substrate, wherein the display substrate comprises a display region and a non-display region surrounding the display region, and the method comprises:

• forming an organic functional layer, wherein the organic functional layer comprises a first portion located in the display region and a second portion located in the non-display region, the second portion is provided with at least one isolation groove, and is partitioned into at least two separate sub-portions by the at least one isolation groove, and the at least two sub-portions are arranged sequentially along a first direction from the display region to a boundary of the display substrate;
• wherein the second portion is provided with a first isolation groove and a second isolation groove, and the first isolation groove is located between the display region and the second isolation groove;
• the second portion is partitioned by the first isolation groove and the second isolation groove into a first sub-portion, a second sub-portion and a third sub-portion, and the first sub-portion, the second sub-portion and the third sub-portion are separate from each other, and are sequentially arranged in a spaced manner along the first direction;
• wherein the display substrate further comprises:
• a circuit structure located in the non-display region, wherein an orthographic projection of the circuit structure onto a base substrate of the display substrate is covered by an orthographic projection of the second sub-portion onto the base substrate;
• a first signal line structure located in the non-display region, wherein an orthographic projection of the first signal line structure onto the base substrate is covered by an orthographic projection of the first sub-portion onto the base substrate;
• a second signal line structure located in the non-display region, wherein an orthographic projection of the second signal line structure onto the base substrate is covered by an orthographic projection of the third sub-portion onto the base substrate;
• wherein along the first direction, both a width of the first sub-portion and a width of the third sub-portion are smaller than a width of the second sub-portion.