IP Library › Patent Application 12588434
Patent Application
App. No. 12/588,434

Organic electroluminescent display device and manufacturing method of organic electroluminescent display device

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Quick Facts
Patent No.
US None
App. No.
12/588,434
Abstract

The present invention provides a top-emission-type organic EL display device. In a top-emission-type organic EL display device which includes organic EL elements each of which is formed by stacking a reflective lower electrode, a function layer and a light-transmissive upper electrode in order, the upper electrode contains a plurality of fine particles which are made of a material different from a material of the upper electrode. The fine particles are preferably made of silica. A portion of the upper electrode may be provided below the fine particles and a portion of the upper electrode may be provided above the fine particles.

Claims (10)

1 . An organic EL display device of top emission type which includes organic EL elements each of which is formed by stacking a reflective lower electrode, a function layer and a light-transmissive upper electrode in order,

wherein a plurality of light-transmissive fine particles is arranged in a scattered manner in the upper electrode.

2 . An organic EL display device according to claim 1 ,

wherein the fine particles are made of silica.

3 . An organic EL display device according to claim 1 ,

wherein a portion of the upper electrode is provided below the fine particles, and a portion of the upper electrode is also provided above the fine particles.

4 . An organic EL display device according to claim 1 ,

wherein the fine particles have a size which is less than 10 μm.

5 . An organic EL display device according to claim 4 ,

wherein the fine particles have a size which is equal to or less than and equal to or more than 50 nm.

Assignments (3)
MERGER Recorded Dec 13, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027482/0140 →
ATTACHED ARE (1) THE COMPANY SPLIT DOCUMENTS IN JAPANESE WITH ENGLISH TRANSLATION THEREOF AND (2) THE CERTIFICATE OF COMPANY SPLIT DOCUMENT IN JAPANESE WITH ENGLISH TRANSLATION, WHICH TOGETHER CONVEY 50% OWNERSHIP OF THE REGISTERED PATENTS AS LISTED IN THE ATTACHED TO EACH OF THE RECEIVING PARTIES (SEE PAGE 10, EXHIBIT 2-1, SECTION 1 OF THE ENGLISH TRANSLATION OF THE COMPANY SPLIT PLAN.) Recorded Dec 13, 2011
From: HITACHI, DISPLAYS, LTD.
To: HITACHI DISPLAYS, LTD.; IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027615/0589 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 15, 2009
From: TANAKA, MASAHIRO; OCHIAI, TAKAHIRO; MATSUURA, TOSHIYUKI; MURAKAMI, HAJIME
To: HITACHI DISPLAYS, LTD.
Reel/Frame 023410/0266 →