Display substrate, manufacturing method thereof, and display device
AssigneesHefei Boe Optoelectronics Technology Co., Ltd., Boe Technology Group Co., Ltd.
InventorsKui GONG, Xianxue DUAN
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Abstract
A display substrate, a manufacturing method thereof, and a display device. The method includes: forming a pixel definition layer transitional pattern on a base substrate, the pixel definition layer transitional pattern being provided at a lateral surface with an undercut; forming a common layer, which is broken at the undercut, on the base substrate; removing the undercut to obtain a pattern of a pixel definition layer; and forming a cathode on the base substrate.
Claims20
A display substrate, comprising a base substrate and a pixel definition layer arranged on the base substrate, wherein
- the pixel definition layer comprises a first film layer and a second film layer, the first film layer is arranged at a side of the second film layer adjacent to the base substrate, and an orthogonal projection of a top surface of the first film layer onto the base substrate completely falls within an orthogonal projection of a bottom surface of the second film layer onto the base substrate.
A method for manufacturing a display substrate, comprising:
- forming a pixel definition layer transitional pattern on a base substrate, the pixel definition layer transitional pattern being provided at a lateral surface with an undercut;
- and
- removing the undercut to obtain a pattern of a pixel definition layer;
- wherein the forming the pixel definition layer transitional pattern on the base substrate comprises:
- forming at least two dam members on the base substrate, wherein the at least two dam members are located in a direction perpendicular to the base substrate, the pixel definition layer transitional pattern comprises the at least two dam members, and the undercut is formed between two of the at least two dam members,
- wherein the forming the at least two dam members on the base substrate comprises:
- forming, on the base substrate, a first dam member, a second dam member arranged on the first dam member and a third dam member arranged on the second dam member, wherein an orthogonal projection of a top surface of the second dam member onto the base substrate completely falls within an orthogonal projection of a bottom surface of the third dam member onto the base substrate, and an edge of the orthogonal projection of the top surface of the second dam member onto the base substrate is spaced apart by a certain distance from an edge of the orthogonal projection of the bottom surface of the third dam member onto the base substrate.
The method according to 12, further comprising:
- forming the common layer, that is broken at the undercut, on the base substrate.
Dependencies are inferred from the claim text.