Organic luminescent substrate, preparation method thereof, display apparatus, and display driving method
View Patent ↗The present disclosure relates to an organic luminescent substrate. The organic luminescent substrate may include a first organic luminescent field effect transistor and a second organic luminescent field effect transistor. The first organic luminescent field effect transistor may include a first gate electrode, a first electrode, a second electrode, and a first active luminescent layer. The second organic luminescent field effect transistor may include a second gate electrode, a third electrode, a fourth electrode, and a second active luminescent layer. One of the first organic luminescent field effect transistor and the second organic luminescent field effect transistor may be an N-type transistor and the other one may be a P-type transistor. The first gate electrode may be coupled to the second gate electrode.
1. An organic luminescent substrate, comprising:
a first organic luminescent field effect transistor, comprising a first gate electrode, a first electrode, a second electrode, and a first active luminescent layer and
a second organic luminescent field effect transistor, comprising a second gate electrode, a third electrode, a fourth electrode, and a second active luminescent layer;
wherein one of the first organic luminescent field effect transistor and the second organic luminescent field effect transistor is an N-type transistor and the other one is a P-type transistor;
the first gate electrode is directly connected internally to the second gate electrode below the first active luminescent layer and the second active luminescent layer;
the first electrode and the second electrode each have a comb shape comprising a comb tooth portion, an orthographic projection of the comb tooth portion of the first electrode on a plane where the first gate electrode is and an orthographic projection of the comb tooth portion of the second electrode on the plane where the first gate electrode is are alternately disposed; and
the third electrode and the fourth electrode each have a comb shape comprising a comb tooth portion, an orthographic projection of the comb tooth portion of the third electrode on a plane where the second gate electrode is and an orthographic projection of the comb tooth portion of the fourth electrode on the plane where the second gate electrode is are alternately disposed.
2. The organic luminescent substrate of claim 1 , wherein the second electrode is coupled to the fourth electrode, the first electrode and the second electrode are both coupled to the first active luminescent layer, and the third electrode and the fourth electrode are both coupled to the second active luminescent layer.
3. The organic luminescent substrate of claim 1 , wherein the first active luminescent layer comprises a first organic luminescent semiconductor material; the second active luminescent layer comprises a second organic luminescent semiconductor material; one of the first organic luminescent semiconductor material and the second organic luminescent semiconductor material is an N type organic luminescent semiconductor material, and the other one is a P type organic luminescent semiconductor material.
4. The organic luminescent substrate of claim 1 , wherein the first active luminescent layer comprises a first active layer and a first luminescent layer on a side of the first active layer;
the second active luminescent layer comprises a second active layer and a second luminescent layer on a side of the second active layer; and
the first active layer and the second active layer are in a same layer, and the first luminescent layer and the second luminescent layer are in a same layer.
5. The organic luminescent substrate of claim 4 , wherein an orthographic projection of the first luminescent layer on a plane where the first active layer is located covers a partial region of the first active layer, the first electrode is coupled to a region on a side of the first active layer opposite from the base substrate and not covered by the first luminescent layer, and an orthographic projection of the first electrode on the plane where the first active layer is located does not overlap an orthographic projection of the first luminescent layer on the plane where the first active layer is located; and
an orthographic projection of the second luminescent layer on a plane where the second active layer is covers a partial region of the second active layer, the third electrode is coupled to a region on a side of the second active layer opposite from the base substrate and not covered by the second luminescent layer, and an orthographic projection of the third electrode on the plane where the second active layer is does not overlap the orthographic projection of second luminescent layer on the plane where the second active layer is.
6. The organic luminescent substrate of claim 1 , wherein an orthographic projection of the second electrode on a plane where the first active luminescent layer is located does not overlap the first active luminescent layer; and
an orthographic projection of the fourth electrode on a plane where the second active luminescent layer is does not overlap the second active luminescent layer.
7. The organic luminescent substrate of claim 6 , further comprising a transparent electrode,
wherein the transparent electrode couples the first active luminescent layer with the second electrode, and couples the second active luminescent layer with the fourth electrode.
8. The organic luminescent substrate of claim 1 , wherein the first active luminescent layer and the second active luminescent layer are configured to emit light of different colors in a conductive state.
9. The organic luminescent substrate of claim 1 , wherein the first electrode is electrically coupled to the third electrode.
10. A display apparatus, comprising the organic luminescent substrate according to claim 1 .
11. The display apparatus of claim 10 , further comprising a plurality of gate lines and a plurality of data lines, the plurality of the gate lines and the plurality of the data lines defining a plurality of display areas arranged in an array, and the organic luminescent substrate has a one-to-one correspondence with each of the plurality of the display areas, each of the plurality of the display areas comprising a first sub-pixel region and a second sub-pixel region, the first organic luminescent field effect transistor is located in the corresponding first sub-pixel region, and the second organic luminescent field effect transistor is located in the corresponding second sub-pixel region.
12. The display apparatus of claim 11 , further comprising a switching transistor,
wherein the switching transistor has a one-to-one correspondence with the organic luminescent substrate, a gate electrode of the switching transistor is coupled to a corresponding one of the plurality of the gate lines, a source of the switching transistor is coupled to a corresponding one of the plurality of the data lines, and a drain of the switching transistor is coupled to the first gate electrode and the second gate electrode of the corresponding organic luminescent apparatus.