IP Library Granted Patent US 11,580,907
Granted Patent B2
US 11,580,907 · App. 17/505,935 · Granted Feb 14, 2023

Organic electroluminescent device and electronic apparatus

Inventors: Hitoshi Ota (Shiojiri, JP); Ryoichi Nozawa (Shiojiri, JP)
Assignee: SEIKO EPSON CORPORATION
G09G3/3233H01L27/3258H01L27/3265G09G2300/0842G09G2310/0262
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Quick Facts
Patent No.
US 11,580,907
App. No.
17/505,935
Granted
Feb 14, 2023
Kind
B2
Abstract

An electroluminescent device includes a light-emitting element, a drive transistor that supplies a driving current corresponding to a gradation voltage to the light-emitting element, a first conductive layer that is electrically connected to a gate of the drive transistor, and a second conductive layer that is supplied a fixed potential and that is disposed on a same layer as the first conductive layer. The first conductive layer and the second conductive layer are disposed apart and electrically insulated from one another, and in plan view, the first conductive layer is surrounded by the second conductive layer.

Claims (24)

1. An electroluminescent device, comprising:

a light-emitting element;

a drive transistor that supplies a driving current corresponding to a gradation voltage to the light-emitting element;

a first conductive layer that is electrically connected to a gate of the drive transistor; and

a second conductive layer that is supplied a fixed potential and that is disposed on a same layer as the first conductive layer, wherein

in a first direction, the first conductive layer and the second conductive layer are arranged via an insulating layer, and

in a second direction that intersects the first direction, the first conductive layer and the second conductive layer are arranged via the insulating layer.

2. The electroluminescent device according to claim 1 , wherein

the second conductive layer has:

a first portion arranged next to the first conductive layer via the insulating layer; and

a second portion that is disposed opposite to the first portion with respect to the first conductive layer in the first direction and that is arranged next to the first conductive layer via the insulating layer.

3. The electroluminescent device according to claim 2 , wherein

the second conductive layer has:

a third portion arranged next to the first conductive layer via the insulating layer; and

a fourth portion that is disposed opposite to the third portion with respect to the first conductive layer in the second direction and that is arranged next to the first conductive layer via the insulating layer.

4. The electroluminescent device according to claim 3 , wherein

a capacitive element holds a voltage corresponding to the gradation voltage and is formed by

the first conductive layer and the first portion of the second conductive layer;

the first conductive layer and the second portion of the second conductive layer;

the first conductive layer and the third portion of the second conductive layer; and

the first conductive layer and the fourth portion of the second conductive layer.

5. The electroluminescent device according to claim 1 , wherein

a capacitive element holds a voltage corresponding to the gradation voltage and is formed by the first conductive layer and the second conductive layer.

6. An electronic apparatus comprising the electroluminescent device according to claim 1 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2023
From: SEIKO EPSON CORPORATION
To: LUMITEK DISPLAY TECHNOLOGY LIMITED
Reel/Frame 065221/0372 →
Priority Claims (1)
JP 2014-179304 · Sep 3, 2014 · national
Continuity (3)
Continuation 16986633 · Aug 6, 2020
Continuation 14831491 · Aug 20, 2015
Related Publication 20220044633A1 · Feb 10, 2022