US 2024/0268188 A1Published application

Display device and manufacturing method thereof

AssigneeJapan Display Inc.

InventorsSo NISHIYAMA, Sho YANAGISAWA

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Abstract

According to one embodiment, a manufacturing method of a display device includes forming an inorganic insulating layer which covers a lower electrode, a feed terminal and a mounting terminal, forming a first aperture from which the feed terminal is exposed in the inorganic insulating layer, forming a partition which is in contact with the feed terminal through the first aperture, forming a second aperture from which the lower electrode is exposed in the inorganic insulating layer, forming an organic layer which is in contact with the lower electrode through the second aperture, and forming an upper electrode which covers the organic layer.

Claims20

Dependent claims

A manufacturing method of a display device, comprising:

forming an inorganic insulating layer which covers a lower electrode located in a display area, a feed terminal located in a surrounding area outside the display area, and a mounting terminal for mounting a signal source;
forming a first aperture from which the feed terminal is exposed in the inorganic insulating layer by performing etching using a first resist formed on the inorganic insulating layer as a mask;
forming a partition comprising a conductive lower portion which is located on the inorganic insulating layer in the display area and is in contact with the feed terminal through the first aperture in the surrounding area, and an upper portion which is located on the lower portion and protrudes from a side surface of the lower portion, after removing the first resist;
forming a second aperture from which the lower electrode is exposed in the inorganic insulating layer by performing etching using a second resist formed on the inorganic insulating layer and the partition as a mask;
forming an organic layer which is in contact with the lower electrode through the second aperture by depositing a first material using the partition as a mask, after removing the second resist;
and
forming an upper electrode which covers the organic layer and is in contact with the lower portion of the partition by depositing a second material using the partition as a mask.

4 more elements

Dependencies are inferred from the claim text.