IP Library Granted Patent US 10,978,521
Granted Patent B2
US 10,978,521 · App. 16/750,203 · Granted Apr 13, 2021

Display device

Inventor: Kengo Kato (Minato-ku, JP)
Assignee: Japan Display Inc.
H01L27/323G06F3/0446H01L51/5253G06F2203/04102
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Quick Facts
Patent No.
US 10,978,521
App. No.
16/750,203
Granted
Apr 13, 2021
Kind
B2
Abstract

A display device according to an embodiment of the present invention includes: a plurality of pixels, each pixel having an opening; and a sealing film formed on the plurality of pixels, wherein the sealing film includes an inorganic film, and the inorganic film includes a wave portion whose cross section is a wave-shaped portion.

Claims (22)

1. A display device comprising:

a plurality of pixels, each pixel having an opening; and

a sealing film formed on the plurality of pixels, wherein

the sealing film includes a first inorganic film, a second inorganic film disposed below the first inorganic film and an organic film disposed between the first inorganic film and the second inorganic film,

the first inorganic film includes a wave portion whose cross section is a wave-shaped portion,

the organic film includes a wavy surface, and

the wave portion of the first inorganic film is formed on the wavy surface of the organic film.

2. The display device according to claim 1 , wherein

a distance between adjacent peaks and/or a distance between adjacent valleys included in the wave portion of the first inorganic film is equal to a distance between the adjacent openings.

3. The display device according to claim 1 , wherein

the peak or valley included in the wave portion of the first inorganic film is disposed at a position corresponding to each of the openings.

4. The display device according to claim 1 , wherein

the sealing film includes an organic film,

the organic film includes a wavy surface, and

the wave portion of the first inorganic film is formed on the wavy surface of the organic film.

5. The display device according to claim 1 ; further comprising:

a common electrode formed across the plurality of pixels, wherein

the sealing film is formed on the common electrode, and

the second inorganic film includes a first portion having a first thickness and a second portion having a second thickness smaller than the first thickness and formed below the wave portion of the first inorganic film.

6. The display device according to claim 1 , further comprising:

a touch panel electrode formed on the sealing film, wherein

the touch panel electrode is disposed at a position not overlapping the opening of the pixel.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 23, 2020
From: KATO, KENGO
To: JAPAN DISPLAY INC.
Reel/Frame 051671/0502 →
Priority Claims (1)
JP JP2019-010972 · Jan 25, 2019 · national
Continuity (1)
Related Publication 20200243611A1 · Jul 30, 2020