Pixel definition layer having an incline for an organic light emitting device
First Claim
1. A substrate for an organic light-emitting device, comprising:
- a base substrate;
a pixel definition layer on the base substrate, wherein the pixel definition layer defines a plurality of pixel regions, the pixel definition layer comprises a top opening and a lower opening along a thickness direction of the base substrate corresponding to each of the pixel regions, the lower opening is in the top opening so that the pixel definition layer comprises a slope extending from the top opening to the lower opening corresponding to each of the pixel regions, and boundaries of the top openings adjacent to each other are straight lines;
an organic light-emitting device in each of the pixel regions; and
spacers spaced apart from each other on the pixel definition layer,wherein the slope extending from one of the boundaries to the lower opening corresponding to each of the pixel regions protrudes toward the base substrate, and is in a shape of a smooth arc; and
tangents of the smooth arc have a slope which gradually decreases in absolute value from the one of the boundaries to the lower opening;
a first portion of the pixel definition layer has a flat surface which is directly contacted with the spacers; and
a second portion of the pixel definition layer is the boundaries of the top openings intersected with each other and between two adjacent spacers.
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Abstract
A substrate for an organic light-emitting device, a method for manufacturing the substrate for an organic light-emitting device, and a display device are provided. The substrate for an organic light-emitting device includes a base substrate, a pixel definition layer on the base substrate, and an organic light-emitting device in each of the pixel regions. The pixel definition layer defines a plurality of pixel regions, each of the pixel regions has a top opening and a lower opening along a thickness direction of the base substrate, the lower opening is in the top opening so that each of the pixel regions has a slope extending from the top opening to the lower opening, and boundaries of the top openings adjacent to each other are intersected with each other.
17 Citations
17 Claims
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1. A substrate for an organic light-emitting device, comprising:
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a base substrate; a pixel definition layer on the base substrate, wherein the pixel definition layer defines a plurality of pixel regions, the pixel definition layer comprises a top opening and a lower opening along a thickness direction of the base substrate corresponding to each of the pixel regions, the lower opening is in the top opening so that the pixel definition layer comprises a slope extending from the top opening to the lower opening corresponding to each of the pixel regions, and boundaries of the top openings adjacent to each other are straight lines; an organic light-emitting device in each of the pixel regions; and spacers spaced apart from each other on the pixel definition layer, wherein the slope extending from one of the boundaries to the lower opening corresponding to each of the pixel regions protrudes toward the base substrate, and is in a shape of a smooth arc; and
tangents of the smooth arc have a slope which gradually decreases in absolute value from the one of the boundaries to the lower opening;a first portion of the pixel definition layer has a flat surface which is directly contacted with the spacers; and a second portion of the pixel definition layer is the boundaries of the top openings intersected with each other and between two adjacent spacers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A manufacturing method of a substrate for an organic light-emitting device, comprising:
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providing a base substrate; forming a pixel definition layer on the base substrate, wherein the pixel definition layer defines a plurality of pixel regions, the pixel definition layer comprises a top opening and a lower opening along a thickness direction of the base substrate corresponding to each of the pixel regions, the lower opening is formed in the top opening so that the pixel definition layer comprises a slope extending from the top opening to the lower opening corresponding to each of the pixel regions, and boundaries of the top openings adjacent to each other are straight lines; forming an organic light-emitting device in each of the pixel regions; forming spacers spaced apart from each other on the pixel definition layer, wherein the slope extending from one of the boundaries to the lower opening corresponding to each of the pixel regions protrudes toward the base substrate, and is in a shape of a smooth arc; and
tangents of the smooth arc have a slope which gradually decreases in absolute value from the one of the boundaries to the lower opening;a first portion of the pixel definition layer has a flat surface which is directly contacted with the spacers; a second portion of the pixel definition layer is the boundaries of the top openings intersected with each other and between two adjacent spacers. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification