OLED with subpixels having non-emitting filling part
Disclosed are a display substrate, an organic light-emitting diode display panel and a display device. The display substrate includes a base substrate and a pixel defining layer located on a side of the base substrate, wherein the pixel defining layer is provided with a plurality of sub-pixel openings, outer contour shapes and sizes of all the sub-pixel openings are the same, filling parts are arranged in at least parts of the sub-pixel openings, and for different sub-pixel openings, area ratios of the filling parts to the sub-pixel openings are different.
1. A display substrate, comprising:
a base substrate; and
a pixel defining layer on a side of the base substrate;
wherein the pixel defining layer is provided with a plurality of sub-pixel openings;
outer contour shapes and sizes of all the plurality of sub-pixel openings are same;
filling parts are provided inside at least parts of the plurality of sub-pixel openings; and
for different sub-pixel openings, area ratios of filling part to sub-pixel opening are different;
wherein an orthographic projection of a filling part inside a sub-pixel opening on the base substrate is located in a center area of the sub-pixel opening.
2. The display substrate according to claim 1 , wherein for the different sub-pixel openings, the area ratios are positively correlated with emitted light wavelengths corresponding to the sub-pixel openings.
3. The display substrate according to claim 2 , wherein the plurality of sub-pixel openings comprise red sub-pixel openings, green sub-pixel openings and blue sub-pixel openings, and the red sub-pixel openings and the green sub-pixel openings are provided with the filling parts inside.
4. The display substrate according to claim 3 , wherein an area in the red sub-pixel opening except the filling part serves as a red effective light-emitting area, an area in the green sub-pixel opening except the filling part serves as a green effective light-emitting area, and the blue sub-pixel opening serves as a blue effective light-emitting area; and
a ratio of the red effective light-emitting area: the green effective light-emitting area: the blue effective light-emitting area is 1:1.1:1.5-1:1.3:1.7.
5. The display substrate according to claim 4 , wherein the ratio of the red effective light-emitting area: the green effective light-emitting area: the blue effective light-emitting area is 1:1.2:1.6.
6. The display substrate according to claim 1 , wherein a shape of the orthographic projection of the filling part inside the sub-pixel opening on the base substrate is similar to a shape of an orthographic projection of the sub-pixel opening on the base substrate.
7. The display substrate according to claim 6 , wherein a center of the orthographic projection of the filling part inside the sub-pixel opening on the base substrate and a center of the orthographic projection of the sub-pixel opening on the base substrate coincide.
8. The display substrate according to claim 6 , wherein the orthographic projection of the sub-pixel opening on the base substrate is hexagonal, pentagonal, rectangular, square or circular.
9. The display substrate according to claim 1 , wherein the filling parts and the pixel defining layer are in a same layer, and materials of the filling parts and a material of the pixel defining layer are same.
10. The display substrate according to claim 1 , wherein the display substrate further comprises an organic light-emitting diode layer disposed on a side, facing away from the base substrate, of the pixel defining layer, and the organic light-emitting diode layer comprises organic light-emitting diode parts located in areas of respective sub-pixel openings except the filling parts; and
in a direction perpendicular to the base substrate, a thickness of the organic light-emitting diode parts is less than a thickness of the filling parts.
11. The display substrate according to claim 10 , wherein the display substrate further comprises:
an encapsulation layer on a side, facing away from the pixel defining layer, of the organic light-emitting diode layer; and
a color film layer on a side, facing away from the organic light-emitting diode layer, of the encapsulation layer;
wherein the color film layer comprises color film parts corresponding to the respective sub-pixel openings, and outer contour shapes of the color film parts are similar to the outer contour shapes of the sub-pixel openings.
12. An organic light-emitting diode display panel, comprising a display substrate, wherein the display substrate comprises:
a base substrate; and
a pixel defining layer on a side of the base substrate;
wherein the pixel defining layer is provided with a plurality of sub-pixel openings;
outer contour shapes and sizes of all the plurality of sub-pixel openings are same;
filling parts are provided inside at least parts of the plurality of sub-pixel openings; and
for different sub-pixel openings, area ratios of filling part to sub-pixel opening are different;
wherein an orthographic projection of a filling part inside a sub-pixel opening on the base substrate is located in a center area of the sub-pixel opening.
13. The organic light-emitting diode display panel according to claim 12 , wherein for the different sub-pixel openings, the area ratios are positively correlated with emitted light wavelengths corresponding to the sub-pixel openings.
14. The organic light-emitting diode display panel according to claim 13 , wherein the plurality of sub-pixel openings comprise red sub-pixel openings, green sub-pixel openings and blue sub-pixel openings, and the red sub-pixel openings and the green sub-pixel openings are provided with the filling parts inside.
15. The organic light-emitting diode display panel according to claim 14 , wherein an area in the red sub-pixel opening except the filling part serves as a red effective light-emitting area, an area in the green sub-pixel opening except the filling part serves as a green effective light-emitting area, and the blue sub-pixel opening serves as a blue effective light-emitting area; and
a ratio of the red effective light-emitting area: the green effective light-emitting area: the blue effective light-emitting area is 1:1.1:1.5-1:1.3:1.7.
16. The organic light-emitting diode display panel according to claim 15 , wherein the ratio of the red effective light-emitting area: the green effective light-emitting area: the blue effective light-emitting area is 1:1.2:1.6.
17. The organic light-emitting diode display panel according to claim 12 , wherein a shape of the orthographic projection of the filling part inside the sub-pixel opening on the base substrate is similar to a shape of an orthographic projection of the sub-pixel opening on the base substrate.
18. The organic light-emitting diode display panel according to claim 16 , wherein a center of the orthographic projection of the filling part inside the sub-pixel opening on the base substrate and a center of the orthographic projection of the sub-pixel opening on the base substrate coincide.
19. The organic light-emitting diode display panel according to claim 17 , wherein the orthographic projection of the sub-pixel opening on the base substrate is hexagonal, pentagonal, rectangular, square or circular.
20. A display device, comprising the organic light-emitting diode display panel according to claim 12 .