Display substrate and manufacturing method therefor, and display device
A display substrate has a display area and an encapsulation area around the display area. The display substrate includes a substrate and a spacer layer. The spacer layer is located on a side of the substrate, and includes a plurality of first columnar spacers located in the encapsulation area and distributed at intervals around the display area, and bottom ends of the plurality of first columnar spacers are fixedly disposed on the substrate. Ends of the plurality of first columnar spacers proximate to the substrate are the bottom ends thereof, and ends of the plurality of first columnar spacers away from the substrate are top ends thereof.
1. A display substrate having a display area and an encapsulation area around the display area, the display substrate comprising:
a substrate;
a spacer layer located on a side of the substrate, wherein the spacer layer includes:
a plurality of first columnar spacers located in the encapsulation area and distributed at intervals around the display area, bottom ends of the plurality of first columnar spacers being fixedly disposed on the substrate, wherein ends of the plurality of first columnar spacers proximate to the substrate are the bottom ends thereof, and ends of the plurality of first columnar spacers away from the substrate are top ends thereof; a shape of a structure of a first columnar spacer of the plurality of first columnar spacers is a frustum of a cone or a frustum of a prism; a shape of a longitudinal section of the first columnar spacer is a trapezoid; and a length of a bottom base of the trapezoid is greater than a length of a top base of the trapezoid, the bottom base of the trapezoid being located on a side proximate to the substrate; and
a plurality of second columnar spacers located in the display area and distributed at intervals, bottom ends of the plurality of second columnar spacers being fixedly disposed on the substrate, wherein ends of the plurality of second columnar spacers proximate to the substrate are the bottom ends thereof, and ends of the plurality of second columnar spacers away from the substrate are top ends thereof;
a filter layer located between the plurality of second columnar spacers and the substrate, the filter layer including a plurality of filter patterns with different colors; and
a supporting layer located between the plurality of first columnar spacers and the substrate, the supporting layer including at least one supporting pattern with at least one color, wherein a material of a supporting pattern with any color of the at least one color is the same as a material of any filter pattern in the plurality of filter patterns with different colors,
wherein distances from the top ends of the plurality of first columnar spacers to a surface of the substrate away from the plurality of first columnar spacers are approximately equal to distances from the top ends of the plurality of second columnar spacers to a surface of the substrate away from the plurality of second columnar spacers; or
wherein distances from the bottom ends of the plurality of second columnar spacers to the surface of the substrate away from the plurality of second columnar spacers are approximately equal to distances from the bottom ends of the plurality of first columnar spacers to the surface of the substrate away from the plurality of first columnar spacers, and/or heights of the plurality of first columnar spacers are approximately equal to heights of the plurality of second columnar spacers;
wherein the at least one supporting pattern includes a plurality of supporting patterns the plurality of supporting patterns are disposed within a same side of the encapsulation area in a direction from the display area to the encapsulation area, and each supporting pattern corresponds to at least one first columnar spacer of the plurality of first columnar spacers;
the supporting layer has a plurality of hollowed-out regions, and a hollowed-out region exists between two adjacent supporting patterns in the direction from the display area to the encapsulation area; and
thicknesses of the plurality of supporting patterns are approximately equal to a thickness of the filter pattern.
2. The display substrate according to claim 1 , wherein distances from the top ends of the plurality of first columnar spacers to the surface of the substrate away from the plurality of first columnar spacers are approximately equal.
3. The display substrate according to claim 1 , wherein distances from the bottom ends of the plurality of first columnar spacers to the surface of the substrate away from the plurality of first columnar spacers are approximately equal, and heights of the plurality of first columnar spacers are approximately equal.
4. The display substrate according to claim 1 , wherein colors of the plurality of supporting patterns are the same.
5. The display substrate according to claim 1 , further comprising: a black matrix layer located on the substrate, projections of the plurality of first columnar spacers on the substrate and projections of the plurality of second columnar spacers on the substrate being all located within a projection of the black matrix layer on the substrate.
6. The display substrate according to claim 1 , wherein a material of the plurality of first columnar spacers is the same as a material of the plurality of second columnar spacers.
7. A display device, comprising the display substrate according to claim 1 .
8. The display substrate according to claim 1 , wherein the distances from the bottom ends of the plurality of first columnar spacers to the surface of the substrate away from the plurality of first columnar spacers are not equal, and the heights of the plurality of first columnar spacers are not equal.
9. A manufacturing method for a display substrate, wherein the display substrate has a display area and an encapsulation area around the display area; and
the manufacturing method for the display substrate comprises:
forming a first film on a substrate; and
patterning the first film to form a plurality of first columnar spacers distributed at intervals, wherein the plurality of first columnar spacers are located in the encapsulation area, wherein
a plurality of second columnar spacers distributed at intervals are synchronously formed when the first film is patterned to form the plurality of first columnar spacers, the plurality of second columnar spacers are located in the display area; a shape of a structure of a first columnar spacer of the plurality of first columnar spacers is a frustum of a cone or a frustum of a prism; a shape of a longitudinal section of the first columnar spacer is a trapezoid; and a length of a bottom base of the trapezoid is greater than a length of a top base of the trapezoid, the bottom base of the trapezoid being located on a side proximate to the substrate;
wherein before forming the first film, the manufacturing method for the display substrate further comprises:
forming a second film on a side of the substrate; and
patterning the second film to form a filter layer and a supporting layer; the filter layer including filter patterns with a plurality of colors, the supporting layer including at least one supporting pattern with at least one color, and a material of a supporting pattern with any color of the at least one color being the same as a material of any filter pattern in filter patterns with different colors;
wherein distances from top ends of the plurality of first columnar spacers to a surface of the substrate away from the plurality of first columnar spacers are approximately equal to distances from top ends of the plurality of second columnar spacers to a surface of the substrate away from the plurality of second columnar spacers, wherein ends of the plurality of first columnar spacers away from the substrate are the top ends thereof, and ends of the plurality of second columnar spacers away from the substrate are the top ends thereof; or
wherein distances from bottom ends of the plurality of second columnar spacers to the surface of the substrate away from the plurality of second columnar spacers are approximately equal to distances from bottom ends of the plurality of first columnar spacers to the surface of the substrate away from the plurality of first columnar spacers, and/or heights of the plurality of first columnar spacers are approximately equal to heights of the plurality of second columnar spacers, wherein ends of the plurality of first columnar spacers proximate to the substrate are the bottom ends thereof, and ends of the plurality of second columnar spacers proximate to the substrate are the bottom ends thereof;
wherein the at least one supporting pattern includes a plurality of supporting patterns, the plurality of supporting patterns are disposed within a same side of the encapsulation area in a direction from the display area to the encapsulation area, and each supporting pattern corresponds to at least one first columnar spacer of the plurality of first columnar spacers;
when the second film is patterned to form the filter layer and the supporting layer, the formed supporting layer has a plurality of hollowed-out regions, and a hollowed-out region exists between two adjacent supporting patterns in the direction from the display area to the encapsulation area; and
thicknesses of the plurality of supporting patterns are approximately equal to a thickness of the filter pattern.
10. The manufacturing method for the display substrate according to claim 9 , wherein colors of the plurality of supporting patterns included in the formed supporting layer are the same.