Display substrate, manufacturing method thereof, display panel
First Claim
1. A display substrate comprising:
- a base substrate; and
a pixel defining layer on the base substrate,wherein the pixel defining layer comprises a first defining layer and a second defining layer on the first defining layer,wherein the first defining layer defines a plurality of lower openings,wherein the second defining layer defines a plurality of upper openings corresponding to the plurality of lower openings,wherein respective orthographic projections of respective bottom surfaces of ones of the plurality of the upper openings adjacent the first defining layer on the base substrate overlap respective orthographic projections of corresponding lower openings on the base substrate,wherein the respective orthographic projections of the respective bottom surfaces of the ones of the plurality of upper openings have equal respective areas,wherein the plurality of lower openings comprise a first lower opening, a second lower opening and a third lower opening, and of the display substrate comprise a first pixel, a second pixel and a third pixel,wherein the first lower opening, the second lower opening and the third lower opening form a first cavity, a second cavity and a third cavity respectively together with a corresponding upper opening of the plurality of upper openings for accommodating respective light emitting structures of the first pixel, the second pixel and the third pixel, andwherein an area of an orthographic projection of the third lower opening on the base substrate is different from an area of an orthographic projection of the first lower opening on the base substrate or an orthographic projection of the second lower opening on the base substrate,wherein respective lower openings and respective upper openings of each of the first cavity, the second cavity and the third cavity define a step formed by a material of the first defining layer, andwherein the respective lower openings transition to the respective upper openings via the step,wherein the respective light emitting structures of the first pixel, the second pixel and the third pixel comprise respective hole injection layers,wherein the respective hole injection layers cover an upper surface of the first defining layer within a corresponding first cavity, second cavity, or third cavity, andwherein respective hole injection layers in the first cavity, the second cavity and the third cavity have a substantially equal thickness.
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Abstract
A display substrate including a base substrate and a pixel defining layer is provided. The pixel defining layer includes a first defining layer and a second defining layer, which define a plurality of lower openings and a plurality of upper openings corresponding to the plurality of lower openings, respectively. An orthographic projection of a bottom surface of each upper opening on the base substrate covers that of a corresponding lower opening on the base substrate, orthographic projections of bottom surfaces of the plurality of upper openings on the base substrate have an equal area. The plurality of lower openings include a first lower opening, a second lower opening and a third lower opening, which form a first cavity, a second cavity and a third cavity respectively together with a corresponding upper opening.
9 Citations
15 Claims
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1. A display substrate comprising:
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a base substrate; and a pixel defining layer on the base substrate, wherein the pixel defining layer comprises a first defining layer and a second defining layer on the first defining layer, wherein the first defining layer defines a plurality of lower openings, wherein the second defining layer defines a plurality of upper openings corresponding to the plurality of lower openings, wherein respective orthographic projections of respective bottom surfaces of ones of the plurality of the upper openings adjacent the first defining layer on the base substrate overlap respective orthographic projections of corresponding lower openings on the base substrate, wherein the respective orthographic projections of the respective bottom surfaces of the ones of the plurality of upper openings have equal respective areas, wherein the plurality of lower openings comprise a first lower opening, a second lower opening and a third lower opening, and of the display substrate comprise a first pixel, a second pixel and a third pixel, wherein the first lower opening, the second lower opening and the third lower opening form a first cavity, a second cavity and a third cavity respectively together with a corresponding upper opening of the plurality of upper openings for accommodating respective light emitting structures of the first pixel, the second pixel and the third pixel, and wherein an area of an orthographic projection of the third lower opening on the base substrate is different from an area of an orthographic projection of the first lower opening on the base substrate or an orthographic projection of the second lower opening on the base substrate, wherein respective lower openings and respective upper openings of each of the first cavity, the second cavity and the third cavity define a step formed by a material of the first defining layer, and wherein the respective lower openings transition to the respective upper openings via the step, wherein the respective light emitting structures of the first pixel, the second pixel and the third pixel comprise respective hole injection layers, wherein the respective hole injection layers cover an upper surface of the first defining layer within a corresponding first cavity, second cavity, or third cavity, and wherein respective hole injection layers in the first cavity, the second cavity and the third cavity have a substantially equal thickness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display substrate comprising:
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a base substrate; and a pixel defining layer on the base substrate, wherein the pixel defining layer comprises a first defining layer and a second defining layer on the first defining layer, wherein the first defining layer defines a plurality of lower openings, wherein the second defining layer defines a plurality of upper openings corresponding to the plurality of lower openings, wherein respective orthographic projections of respective bottom surfaces of ones of the plurality of the upper openings adjacent the first defining layer on the base substrate overlap respective orthographic projections of corresponding lower openings on the base substrate, wherein the respective orthographic projections of the respective bottom surfaces of the ones of the plurality of upper openings have equal respective areas, wherein the plurality of lower openings comprise a first lower opening, a second lower opening and a third lower opening, and the display substrate comprise a first pixel, a second pixel and a third pixel, wherein the first lower opening, the second lower opening and the third lower opening form a first cavity, a second cavity and a third cavity respectively together with a corresponding upper opening of the plurality of upper openings for accommodating respective light emitting structures of the first pixel, the second pixel and the third pixel, and wherein an area of an orthographic projection of the third lower opening on the base substrate is different from an area of an orthographic projection of the first lower opening on the base substrate or an orthographic projection of the second lower opening on the base substrate, wherein the first pixel, the second pixel, and the third pixel comprise an R pixel, a G pixel, and a B pixel, respectively, wherein the area of the orthographic projection of the second lower opening in the second cavity on the base substrate is greater than the area of the orthographic projection of the first lower opening in the first cavity on the base substrate and less than the area of the orthographic projection of the third lower opening in the third cavity on the base substrate. - View Dependent Claims (15)
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Specification