Light-emitting substrate and method for manufacturing the same, and light-emitting apparatus

A method for manufacturing a light-emitting substrate, comprising:

• forming a pixel defining layer on a substrate, the pixel defining layer having a plurality of openings;
• and
• forming a plurality of light-emitting devices and at least one blocking unit on the substrate, each light-emitting device including a quantum dot light-emitting pattern formed in an opening, each blocking unit including at least one siloxane segment, wherein
• each opening has at least one side wall, and a side wall includes a first portion and a second portion;
• the first portion is a portion of the side wall that is in contact with a respective quantum dot light-emitting pattern, and the second portion is a portion of the side wall that is away from the substrate relative to the first portion;
• each blocking unit is located in an opening, and the at least one siloxane segment in each blocking unit is grafted to a second portion of a corresponding side wall.

The method for manufacturing the light-emitting substrate according to claim 26, wherein

• a general structural formula of a second reactant is shown in a following formula (2):
• wherein R1' is any one of an alkoxy group, an acyloxy group and a ketoxime group;
• R2' is any one of first hydrocarbyl groups of aliphatics, aromatics or a mixture of aliphatics and aromatics that are branched or unbranched and saturated or unsaturated, a first hydrocarbyl group has the coordinating group;
• and
• R3' and R4' are each any one of a hydrogen atom, a hydroxyl group, an alkoxy group, an acyloxy group, a ketoxime group, and second hydrocarbyl groups of aliphatics, aromatics or a mixture of aliphatics and aromatics that are branched or unbranched and saturated or unsaturated, a second hydrocarbyl group has the coordinating group or has no coordinating group.