Display baseplates, encapsulation baseplates and display apparatuses

1 . A display baseplate, comprising:

a substrate;

one or more light-emitting unit groups on the substrate, wherein each of the light-emitting unit groups comprises a plurality of light emitters;

a light-blocking layer on the substrate, wherein the light-blocking layer comprises a plurality of holes, and an orthographic projection of the light emitters onto the substrate is completely within an orthographic projection of the holes onto the substrate; wherein the light-blocking layer is at a side of the light-emitting unit groups away from the substrate;

a light-transmitting layer on the substrate, wherein the light-transmitting layer covers the light emitters, the light-transmitting layer is partially between the light-blocking layer and the substrate and partially in the holes; and

an encapsulation cover plate at a side of the light-blocking layer away from the substrate;

wherein the light-blocking layer comprises a conductive layer,

the display baseplate further comprises a power supply signal line or one or more electrostatic protection circuits on the substrate,

the conductive layer is electrically connected with the power supply signal line or the electrostatic protection circuits, and

each of the light emitters is electrically connected with one of the electrostatic protection circuits;

wherein the display baseplate further comprises one or more support columns inside the light-transmitting layer, wherein at least one of the support columns comprises a conductive material, and an end of the at least one support column away from the substrate abuts the light-blocking layer; and

the conductive layer is connected with the power supply signal line or the electrostatic protection circuits through the at least one support column.

2 . The display baseplate of claim 1 , wherein,

an orthographic projection of each of the light-emitting unit groups onto the substrate is completely within an orthographic projection of one of the holes onto the substrate; or,

an orthographic projection of each of the light emitters onto the substrate is completely within an orthographic projection of one of the holes onto the substrate.

3 . The display baseplate of claim 1 , wherein an orthographic projection of the light-transmitting layer onto the substrate covers an orthographic projection of the light-blocking layer onto the substrate.

4 . The display baseplate of claim 1 , wherein the light-transmitting layer comprises a first light-transmitting film layer and a second light-transmitting film layer at a side of the first light-transmitting film layer away from the substrate,

the second light-transmitting film layer fills the holes, and a light transmittance of the second light-transmitting film layer is less than a light transmittance of the first light-transmitting film layer; and

an orthographic projection of the second light-transmitting film layer onto the substrate covers the orthographic projection of the light emitters onto the substrate.

5 . The display baseplate of claim 4 , wherein

the light-blocking layer comprises a conductive layer and a light adjustment layer at a side of the conductive layer away from the substrate,

an orthographic projection of the conductive layer onto the substrate is within an orthographic projection of the light adjustment layer onto the substrate; and

a ratio between a thickness of the light adjustment layer and a thickness of the second light-transmitting film layer is in a range of 1:1 to 1:2.

6 . The display baseplate of claim 5 , wherein,

when an orthographic projection of each of the light-emitting unit groups onto the substrate is completely within an orthographic projection of one of the holes onto the substrate, a thickness of the light adjustment layer is a first thickness;

when an orthographic projection of each of the light emitters onto the substrate is completely within an orthographic projection of one of the holes onto the substrate, a thickness of the light adjustment layer is a second thickness; and

the first thickness is greater than the second thickness.

7 . The display baseplate of claim 5 , wherein

a distance between an edge of the orthographic projection of the conductive layer onto the substrate and an edge of the orthographic projection of the light adjustment layer onto the substrate is in a range of 1 μm to 5 μm; or,

a thickness of the light adjustment layer is in a range of 1.5 μm to 3 μm.

8 . The display baseplate of claim 1 , wherein

an orthographic projection of the support columns onto the substrate is within an orthographic projection of the light-blocking layer onto the substrate.

9 . The display baseplate of claim 1 , further comprising one or more connection structures on the substrate,

wherein the light emitters comprise respective first electrodes,

the connection structures are configured to connect the first electrodes with the power supply signal line or the electrostatic protection circuits, and

the support columns are lapped with the connection structures.

10 . The display baseplate of claim 9 , further comprising one or more pixel circuits and one or more connection wires at a side of the pixel circuits away from the substrate,

wherein the light emitters comprise respective second electrodes,

the connection wires connect the second electrodes with the pixel circuits; and

the connection wires and the connection structures are in a same layer.

11 . The display baseplate of claim 1 , wherein each of the electrostatic protection circuits comprises one or more thin film transistors, and the thin film transistors of adjacent electrostatic protection circuits are series-connected with each other.

12 . The display baseplate of claim 1 , wherein the light-transmitting layer comprises a plurality of light-transmitting portions, and each of the light-transmitting portions wraps two or more of the light emitters in one of the light-emitting unit groups.

13 . The display baseplate of claim 1 , further comprising scattering particles dispersed in the light-transmitting layer.