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Manufacturing method of organic light-emitting display and mask assembly

專利號
US10868268B2
公開日期
2020-12-15
申請人
SAMSUNG DISPLAY CO., LTD.（KR Yongin-si）
發(fā)明人
Hoon Kim; Keehyun Nam; Junwoo Kim; Hyesuk An; Gyunghyun Ko
IPC分類
H01L51/50; H01L27/12; H01L21/02; H01L51/52
技術領域
mask,may,layer,pixel,portion,deposition,display,protruding,area,be
地域： Yongin-si

摘要

A method of manufacturing a display device includes preparing a pixel circuit substrate including thin-film transistors and pixel electrodes respectively electrically connected to the thin-film transistors, forming a first deposition layer on the pixel circuit substrate using a first mask assembly, and forming a second deposition layer on the pixel circuit substrate using a second mask assembly. At least one of the first mask assembly and the second mask assembly includes a mask plate including an opening portion through which a deposition material passes and a covering portion that blocks a passage of the deposition material. The mask plate includes a protruding portion that protrudes from an edge of the covering portion toward a center region of the opening portion.

說明書

The opening portion of the mask assembly may include a closed loop edge. An edge of the protruding portion may correspond to a portion of the closed loop edge.

The edge of the protruding portion may include a linear region. The protruding portion may protrude from the linear region.

The edge of the protruding portion may include a curved area. The protruding portion may protrude from the curved area.

The covering portion and the protruding portion may be integrally formed.

The mask assembly may further include a mask sheet overlapping the mask plate, the mask sheet including a plurality of holes spaced apart from each other.

The protruding portion of the mask plate may partially cover the holes of the mask sheet.

The protruding portion of the mask plate may partially cover a first hole among the holes of the mask sheet.

The mask sheet and the mask plate may overlap each other while contacting each other.

The mask sheet and the mask plate may be made of different materials.

BRIEF DESCRIPTION OF THE DRAWINGS

Features will become apparent to those of skill in the art by describing in detail exemplary embodiments with reference to the attached drawings in which:

FIG. 1 illustrates a plan view of a display device according to an embodiment;

FIG. 2 illustrates a cross-sectional view of a pixel of a display device according to an embodiment;

權利要求

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