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Display device

A display device and electrode technology, which can be applied to semiconductor devices, electrical components, circuits, etc., and can solve problems such as reduced film formation accuracy

Pending Publication Date: 2022-07-19
JAPAN DISPLAY INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the processing accuracy of the fine mask, deformation of the shape of the opening, etc., the formation accuracy of the thin film formed by vapor deposition may decrease

Method used

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0019] In addition, the disclosure is merely an example, and it is a matter of course that those skilled in the art can easily conceive of appropriate changes to maintain the gist of the invention, and are also included in the scope of the present invention. In addition, in order to clarify the description, the width, thickness, shape, etc. of each part may be schematically shown in the drawings in comparison with the actual form. In addition, in this specification and each drawing, the same reference numerals are attached to the components which perform the same or similar functions as the components described above with respect to the preceding figures, and repeated detailed descriptions may be appropriately omitted.

[0020] In addition, in the drawings, the X axis, the Y axis, and the Z axis which are orthogonal to each other are described as necessary to facilitate...

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Abstract

According to one embodiment, a display device includes: a second insulating layer having a first opening overlapping a first lower electrode and a second opening overlapping a second lower electrode; a partition wall disposed on the second insulating layer; a first organic layer disposed in the first opening and covering the first lower electrode; and a first upper electrode covering the first organic layer, the partition wall having: a first layer formed of a metal material and having a first side surface facing the first opening, a second side surface facing the second opening, and a first upper surface; and a second layer having a bottom surface in contact with the first upper surface, a third side surface facing the first opening, and a fourth side surface facing the second opening, the second upper surface and the first upper electrode being in contact with the first side surface, the bottom surface extending from the first side surface toward the first opening and from the second side surface toward the second opening, and the fourth side surface extending from the second side surface toward the second opening. A lower portion including the bottom surface of the second layer has an inverted tapered cross-sectional shape in which the width increases from the bottom surface toward the top.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is based on and claims the benefit of the priority of Japanese Patent Application No. 2021-004113 for which it applied on January 14, 2021, and this application contains all the content of this application by reference. technical field [0003] Embodiments of the present invention relate to display devices. Background technique [0004] In recent years, display devices using organic light emitting diodes (OLEDs) as display elements have been put into practical use. The display element includes an organic layer between the pixel electrode and the common electrode. The organic layer includes functional layers such as a hole transport layer and an electron transport layer in addition to the light-emitting layer. Such an organic layer is formed by, for example, a vacuum deposition method. [0005] For example, in the case of mask evaporation, a fine mask having openings corresponding to each pixel is app...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L51/56
CPCH10K59/122H10K59/80522H10K71/164
Inventor 高山健
Owner JAPAN DISPLAY INC
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