IP Library Granted Patent US 8,754,408
Granted Patent B2
US 8,754,408 · App. 13/697,678 · Granted Jun 17, 2014

Organic EL illumination device

Inventor: Yoshikazu Sakaguchi (Tokyo, JP)
Assignee: NEC Lighting, Ltd.
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 8,754,408
App. No.
13/697,678
Granted
Jun 17, 2014
Kind
B2
Abstract

In the organic EL illumination device including m (m is an integer greater than 1) series circuits each of which includes n (n is an integer greater than 1) organic EL panels connected in series, each of the organic EL panels is provided with one organic EL element, a positive electrode and a negative electrode, the m series circuits are connected in parallel between the positive electrode and the negative electrode, and among the organic EL panels in the m series circuits, the organic EL panels having the same place in series connections in the direction from the positive electrode to the negative electrode are connected with each other in parallel.

Claims (9)

1. An organic EL illumination device, comprising:

m (m is an integer greater than 1) series circuits each of which includes n (n is an integer greater than 1) organic EL panels connected in series, each of the organic EL panels being provided with one organic EL element,

a positive electrode, and

a negative electrode, wherein,

said m series circuits are connected in parallel between said positive electrode and said negative electrode, and

the organic EL panels that are positioned in the same location in series connections in the direction from said positive electrode to said negative electrode in respective circuits of the m series circuits, are connected with each other in parallel.

2. The organic EL illumination device according to claim 1 , wherein,

said organic EL element includes an anode, a cathode, and a luminescent layer provided between said anode and said cathode, and

between said organic EL panels connected with each other in parallel, said anodes are connected with each other, and said cathodes are connected with each other.

Assignments (4)
CHANGE OF ADDRESS Recorded Jan 23, 2024
From: HOTALUX, LTD.
To: HOTALUX, LTD.
Reel/Frame 066365/0200 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE ADDRESS PREVIOUSLY RECORDED AT REEL: 050850 FRAME: 0287. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Nov 6, 2019
From: HOTALUX, LTD.
To: HOTALUX, LTD.
Reel/Frame 050942/0429 →
CHANGE OF NAME Recorded Oct 29, 2019
From: NEC LIGHTING, LTD.
To: HOTALUX, LTD.
Reel/Frame 050850/0287 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 13, 2012
From: SAKAGUCHI, YOSHIKAZU
To: NEC LIGHTING, LTD.
Reel/Frame 029288/0498 →
Priority Claims (1)
JP 2010-112076 · May 14, 2010 · national
Continuity (1)
Related Publication 20130056721A1 · Mar 7, 2013