IP Library Granted Patent US 9,107,252
Granted Patent B2
US 9,107,252 · App. 13/785,155 · Granted Aug 11, 2015

Display panel, display unit, and electronic apparatus

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 9,107,252
App. No.
13/785,155
Granted
Aug 11, 2015
Kind
B2
Abstract

A display panel is provided with a plurality of pixels each including: a plurality of light emitting devices connected in parallel to one another, wherein each of the light emitting devices includes a transparent electrode, a reflecting electrode, and an organic layer interposed between the transparent electrode and the reflecting electrode, and the organic layer has a light emitting layer; a pixel circuit driving the light emitting devices; and a plurality of wiring lines connecting each of the light emitting devices and the pixel circuit directly to each other, wherein each of the wiring lines is provided in a same plane as the reflecting electrode, and has a width smaller than a width of the reflecting electrode.

Claims (20)

1. A display panel with a plurality of pixels, each of the pixels comprising:

a plurality of light emitting devices connected in parallel to one another, each of the light emitting devices including a transparent electrode, a reflecting electrode, and an organic layer interposed between the transparent electrode and the reflecting electrode, and the organic layer having a light emitting layer;

a pixel circuit driving the light emitting devices; and

a plurality of wiring lines connecting each of the light emitting devices and the pixel circuit directly to each other, each of the wiring lines being provided in a same plane as the reflecting electrode, and having a width smaller than a width of the reflecting electrode.

2. The display panel according to claim 1 , wherein the wiring lines and the reflecting electrode each include: a first conductive layer in contact with the organic layer; and a second conductive layer in contact with the first conductive layer, the first conductive layer and the second conductive layer being laminated to each other, and the second conductive layer having a reflectance lower than a reflectance of the first conductive layer.

3. The display panel according to claim 1 , wherein

the reflecting electrode includes: a first conductive layer in contact with the organic layer; and a second conductive layer in contact with the first conductive layer, the first conductive layer and the second conductive layer being laminated to each other, and the second conductive layer having a reflectance lower than a reflectance of the first conductive layer, and

each of the wiring lines is provided in a same plane as the second conductive layer, and is made of a same material as the second conductive layer.

4. The display panel according to claim 3 , wherein

the first conductive layer is made of one of aluminum and an aluminum alloy, and

the second conductive layer and the wiring lines are made of one of titanium and a titanium alloy.

5. The display panel according to claim 1 , further comprising a light shielding layer that prevents part or all of a silhouette of the wiring lines from being visually recognized from outside.

6. A display unit with a display panel and a driving circuit that drives the display panel, the display panel being provided with a plurality of pixels, each of the pixels comprising:

a plurality of light emitting devices connected in parallel to one another, each of the light emitting devices including a transparent electrode, a reflecting electrode, and an organic layer interposed between the transparent electrode and the reflecting electrode, and the organic layer having a light emitting layer;

a pixel circuit driving the light emitting devices; and

a plurality of wiring lines connecting each of the light emitting devices and the pixel circuit directly to each other, each of the wiring lines being provided in a same plane as the reflecting electrode, and having a width smaller than a width of the reflecting electrode.

7. An electronic apparatus with a display unit, the display unit being provided with a display panel and a driving circuit that drives the display panel, the display panel being provided with a plurality of pixels, each of the pixels comprising:

a plurality of light emitting devices connected in parallel to one another, each of the light emitting devices including a transparent electrode, a reflecting electrode, and an organic layer interposed between the transparent electrode and the reflecting electrode, and the organic layer having a light emitting layer;

a pixel circuit driving the light emitting devices; and

a plurality of wiring lines connecting each of the light emitting devices and the pixel circuit directly to each other, each of the wiring lines being provided in a same plane as the reflecting electrode, and having a width smaller than a width of the reflecting electrode.

Assignments (6)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2025
From: JDI DESIGN AND DEVELOPMENT G.K.
To: MAGNOLIA BLUE CORPORATION
Reel/Frame 072039/0656 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2024
From: JOLED, INC.
To: JDI DESIGN AND DEVELOPMENT G.K.
Reel/Frame 066382/0619 →
CORRECTION BY AFFIDAVIT FILED AGAINST REEL/FRAME 063396/0671 Recorded Jun 12, 2023
From: JOLED, INC.
To: JOLED, INC.
Reel/Frame 064067/0723 →
SECURITY INTEREST Recorded Apr 20, 2023
From: JOLED, INC.
To: INCJ, LTD.
Reel/Frame 063396/0671 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 18, 2015
From: SONY CORPORATION
To: JOLED INC.
Reel/Frame 035657/0115 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 6, 2013
From: OMOTO, KEISUKE
To: SONY CORPORATION
Reel/Frame 029935/0041 →