Sub-pixel structure, display panel and control method therefor, and display device

1. A sub-pixel structure, comprising: a first functional layer and a second functional layer which are opposite to each other, a conductive structure between the first functional layer and the second functional layer, and a plurality of electrodes on at least one side of the first functional layer; wherein

the first functional layer comprises an insulating region, the second functional layer comprises a target light-shielding region and a target light-transmitting region, wherein orthographic projections of both the conductive structure and the target light-transmitting region on the first functional layer are partial regions of the insulating region, and orthographic projections of the plurality of electrodes on the first functional layer are outside the insulating region; and

the conductive structure is configured to move in the insulating region under the action of voltages loaded on the plurality of electrodes to adjust a luminous flux of light emitted from the target light-transmitting region; and

wherein the insulating region is recessed on a side, proximal to the second functional layer, of the first functional layer to prevent the conductive structure from rolling out of the insulating region during a movement.

2. The sub-pixel structure according to claim 1 , wherein the conductive structure comprises a conductor ball.

3. The sub-pixel structure according to claim 2 , wherein the target light-transmitting region meets one of following conditions:

the target light-transmitting region is a colorless and transparent region;

the target light-transmitting region is a color-filtering region.

4. The sub-pixel structure according to claim 1 , wherein the conductive structure is light-shielding; and

a surface, facing the second functional layer, of the first functional layer is provided with a light-adjusting region in the insulating region, the light-adjusting region is reflective or photoluminescent, and an orthographic projection of the target light-transmitting region on the first functional layer is within the light-adjusting region.

5. The sub-pixel structure according to claim 4 , wherein the first functional layer comprises: a functional layer body and an insulating block on a side, proximal to the second functional layer, of the functional layer body; and

a region where the insulating block is disposed is the light-adjusting region, and a side, proximal to the second functional layer, of the insulating block is reflective or photoluminescent.

6. The sub-pixel structure according to claim 1 , wherein the conductive structure is reflective or photoluminescent; and

a surface, facing the second functional layer, of the first functional layer is provided with an auxiliary light-shielding region in the insulating region, wherein an orthographic projection of the target light-transmitting region on the first functional layer is within the auxiliary light-shielding region.

7. The sub-pixel structure according to claim 1 , wherein the conductive structure is light-shielding; and

the insulating region comprises an auxiliary light-transmitting region, wherein an orthographic projection of the target light-transmitting region on the first functional layer is within the auxiliary light-transmitting region.

8. The sub-pixel structure according to claim 7 , wherein the target light-transmitting region and the auxiliary light-transmitting region meet one of following conditions:

both the target light-transmitting region and the auxiliary light-transmitting region are colorless and transparent regions;

one of the target light-transmitting region and the auxiliary light-transmitting region is a colorless and transparent region, and the other is a color-filtering region;

both the target light-transmitting region and the auxiliary light-transmitting region are color filtering regions, and a wavelength set of light which the target light-transmitting region allows to pass through and a wavelength set of light which the auxiliary light-transmitting region allows to pass through have an intersection.

9. The sub-pixel structure according to claim 1 , wherein the plurality of electrodes comprise: a first switch electrode and a second switch electrode;

the conductive structure is configured to move between a first position and a second position in the insulating region under the action of voltages loaded on the plurality of electrodes; wherein the first position is a position which is most proximal to the first switch electrode in the insulating region, and the second position is a position which is most proximal to the second switch electrode in the insulating region;

when the conductive structure is at the first position, an orthographic projection of the target light-transmitting region on the first functional layer is within an orthographic projection of the conductive structure on the first functional layer; and

when the conductive structure is at the second position, the orthographic projection of the target light-transmitting region on the first functional layer is outside the orthographic projection of the conductive structure on the first functional layer.

10. The sub-pixel structure according to claim 9 , wherein the plurality of electrodes further comprise: a first drive electrode and a second drive electrode;

the first switch electrode and the second switch electrode are on a side, proximal to the second functional layer, of the first functional layer, and the first drive electrode and the second drive electrode are on a side, distal from the second functional layer, of the first functional layer; and

the first switch electrode and the first drive electrode are on a same side of the insulating region, and the second switch electrode and the second drive electrode are on a same side of the insulating region.

11. A display panel, comprising: a first substrate and a second substrate which are arranged oppositely, and a plurality of sub-pixel structures disposed between the first substrate and the second substrate and arranged in an array, wherein the sub-pixel structure comprises:

a first functional layer and a second functional layer which are opposite to each other, a conductive structure between the first functional layer and the second functional layer, and a plurality of electrodes on at least one side of the first functional layer; wherein

the first functional layer comprises an insulating region, the second functional layer comprises a target light-shielding region and a target light-transmitting region, wherein orthographic projections of both the conductive structure and the target light-transmitting region on the first functional layer are partial regions of the insulating region, and orthographic projections of the plurality of electrodes on the first functional layer are outside the insulating region; and

the conductive structure is configured to move in the insulating region under the action of voltages loaded on the plurality of electrodes to adjust a luminous flux of light emitted from the target light-transmitting region; and

wherein the insulating region is recessed on a side, proximal to the second functional layer, of the first functional layer to prevent the conductive structure from rolling out of the insulating region during a movement.

12. The display panel according to claim 11 , wherein the plurality of sub-pixel structures comprise m rows and n columns of sub-pixel structures; the display panel further comprises: m first switch signal lines, m second switch signal lines, n first drive signal lines and n second drive signal lines which are between the first substrate and the second substrate; any two of the m first switch signal lines, the m second switch signal lines, the n first drive signal lines and the n second drive signal lines are insulated, wherein m≥1 and n≥1; and

in a sub-pixel structure in an i th row and j th column of the plurality of sub-pixel structures, the first switch electrode is connected to an i th first switch signal line, the second switch electrode is connected to an i th second switch signal line, the first drive electrode is connected to a j th first drive signal line, and the second drive electrode is connected to a j th second drive signal line, wherein 1≤i≤m and 1≤j≤n.

13. The display panel according to claim 12 , wherein the first functional layer, the plurality of electrodes, the first switch signal line, the second switch signal line, the first drive signal line and the second drive signal line in the sub-pixel structure are on a side, proximal to the second substrate, of the first substrate; and the second functional layer in the sub-pixel structure is on a side, proximal to the first substrate, of the second substrate.

14. The display panel according to claim 13 , wherein the first switch electrode, the second switch electrode, the first switch signal line, and the second switch signal line are on a same layer, and the first drive electrode, the second drive electrode, the first drive signal line, and the second drive signal line are on a same layer.

15. A display device, comprising the display panel according to claim 11 and a display controller, wherein the display controller is configured to adjust voltages loaded on the plurality of electrodes in the sub-pixel structure of the display panel such that a conductive structure in the sub-pixel structure moves in an insulating region of the sub-pixel structure.