IP Library Granted Patent US 12,638,728
Granted Patent B2
US 12,638,728 · App. 18/731,447 · Granted May 26, 2026

Display apparatus and array substrate

Inventors: Kyosuke Watanabe (Tokyo, JP); Jin Hirosawa (Tokyo, JP); Junko Nagasawa (Tokyo, JP)
Assignee: Magnolia White Corporation
G02F1/13439G02F1/1368G02F2201/38
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Quick Facts
Patent No.
US 12,638,728
App. No.
18/731,447
Granted
May 26, 2026
Kind
B2
Abstract

In a display apparatus, reflection of external light is reduced in order to improve visible recognition. A first organic insulating film is provided with a contact hole, and the contact hole includes: a pixel electrode being in contact with an inner wall of the contact hole; a capacitance insulating film being in contact with the inner wall of the contact hole and the pixel electrode; a common electrode being in contact with the capacitance insulating film; and a second organic insulating film being in contact with the common electrode and filling the contact hole, that are formed therein. An upper side of the contact hole includes: a conductive film being in contact with the second organic insulating film; and an antireflection film being in contact with the conductive film, that are formed therein.

Claims (59)

1 . A display apparatus comprising:

a first organic insulating film;

a pixel electrode being in contact with the first organic insulating film;

a capacitance insulating film being in contact with the pixel electrode;

a common electrode being in contact with the capacitance insulating film;

a conductive film being in contact with the common electrode; and

an antireflection film being in contact with the conductive film,

wherein the first organic insulating film is provided with a contact hole,

the contact hole includes:

the pixel electrode being in contact with an inner wall of the contact hole;

the capacitance insulating film being in contact with the inner wall of the contact hole and the pixel electrode,

the common electrode being in contact with the capacitance insulating film; and

a second organic insulating film being in contact with the common electrode and filling the contact hole, that are formed therein, and

an upper side of the contact hole includes:

the conductive film being in contact with the second organic insulating film; and

the antireflection film being in contact with the conductive film, that are formed therein.

2 . The display apparatus according to claim 1 ,

wherein the antireflection film is provided so as to cover the conductive film, and

the antireflection film is also in contact with the common electrode.

3 . The display apparatus according to claim 1 ,

wherein the conductive film has a resistance value lower than a resistance value of the common electrode.

4 . The display apparatus according to claim 1 ,

wherein the conductive film includes:

a metal film; and

a metal oxide film being in contact with the metal film.

5 . The display apparatus according to claim 1 ,

wherein each of the pixel electrode, the common electrode and the antireflection film is made of a metal oxide film having light transmitting property.

6 . An array substrate including a switching element,

the array substrate comprising:

a first organic insulating film;

a pixel electrode being in contact with the first organic insulating film;

a capacitance insulating film being in contact with the pixel electrode;

a common electrode being in contact with the capacitance insulating film;

a conductive film being in contact with the common electrode; and

an antireflection film being in contact with the conductive film,

wherein the first organic insulating film is provided with a contact hole,

the contact hole includes:

the pixel electrode being in contact with an inner wall of the contact hole;

the capacitance insulating film being in contact with the inner wall of the contact hole and the pixel electrode;

the common electrode being in contact with the capacitance insulating film; and

a second organic insulating film being in contact with the common electrode and filling the contact hole, that are formed therein, and

an upper side of the contact hole includes:

the conductive film being in contact with the second organic insulating film; and

the antireflection film being in contact with the conductive film, that are formed therein.

7 . The array substrate according to claim 6 ,

wherein the antireflection film is provided so as to cover the conductive film, and

the antireflection film is also in contact with the common electrode.

8 . The array substrate according to claim 6 ,

wherein the conductive film has a resistance value lower than a resistance value of the common electrode, and

the conductive film includes:

a metal film; and

a metal oxide film being in contact with the metal film.

9 . The array substrate according to claim 6 ,

wherein the switching element is made of a thin film transistor, and

the array substrate includes:

a relay electrode being connected to a drain of the thin film transistor; and

the pixel electrode being connected to the relay electrode at a bottom portion of the contact hole.

10 . The array substrate according to claim 6 , further comprising:

a color filter covered with the first organic insulating film.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 26, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 071527/0585 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2024
From: WATANABE, KYOSUKE; HIROSAWA, JIN; NAGASAWA, JUNKO
To: JAPAN DISPLAY INC.
Reel/Frame 067593/0342 →
Priority Claims (1)
JP 2023-099931 · Jun 19, 2023 · national
Continuity (1)
Related Publication 20240419040A1 · Dec 19, 2024
References Cited (4)
US 11604390B2 · Watanabe · 2023 [cited by applicant]
US 20220163857A1 · Watanabe · 2022 [cited by examiner]
US 20230061880A1 · Watanabe · 2023 [cited by examiner]
JP 2022084146A · 2022 [cited by applicant]