IP Library Granted Patent US 7,714,506
Granted Patent B2
US 7,714,506 · App. 11/678,695 · Granted May 11, 2010

Organic electroluminescence display device

Assignee: Hitachi Displays, Ltd.
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Quick Facts
Patent No.
US 7,714,506
App. No.
11/678,695
Granted
May 11, 2010
Kind
B2
Abstract

An organic electroluminescence display device is disclosed wherein plural organic electroluminescence elements each having an anode, a cathode and an organic layer sandwiched in between the anode and the cathode, the plural organic electroluminescence elements including organic electroluminescence elements developing different colors in a row direction, and at least one of the organic layers having an outer edge of a conic section at an end portion in a column direction thereof, the outer edge of the conic section becoming narrower gradually in its width in a row direction of vapor deposition thereof toward an extreme end at an end portion in a column direction thereof. The organic electroluminescence display device can improve the vapor deposition accuracy and the degree of design freedom.

Claims (16)

1. An organic electroluminescence display device comprising a plurality of organic electroluminescence elements each having an anode, a cathode and an organic layer sandwiched in between the anode and the cathode, the plurality of organic electroluminescence elements being arranged in a matrix shape;

wherein the plurality of organic electroluminescence elements include organic electroluminescence elements developing different colors in a row direction;

wherein at least one of the organic layers becomes narrower gradually in its width in a row direction of vapor deposition thereof toward an extreme end at an end portion in a column direction thereof; and

wherein the at least one of the organic layers is continuous in the column direction over the plurality of organic electroluminescence elements.

2. The organic electroluminescence display device according to claim 1 ,

wherein the curved line is a curved line capable of being approximated to a conic section or a quadratic curve.

3. An organic electroluminescence display device comprising a plurality of organic electroluminescence elements each having an anode, a cathode and an organic layer sandwiched in between the anode and the cathode, the plurality of organic electroluminescence elements being arranged in a matrix shape;

wherein the plurality of organic electroluminescence elements include organic electroluminescence elements developing different colors in a row direction;

wherein an outer edge of at least one of the organic layers is constituted by a differentiable curved line at an end portion in a column direction thereof; and

wherein the at least one of the organic layers is continuous in the column direction over the plurality of organic electroluminescence elements.

4. An organic electroluminescence display device comprising a plurality of organic electroluminescence elements each having an anode, a cathode and an organic layer sandwiched in between the anode and the cathode, the plurality of organic electroluminescence elements being arranged in a matrix shape;

wherein the plurality of organic electroluminescence elements include organic electroluminescence elements developing different colors in a row direction;

wherein an outer edge of at least one of the organic layers is constituted by an outwardly expanded curved line at an end portion in a column direction thereof; and

wherein the at least one of the organic layers is continuous in the column direction over the plurality of organic electroluminescence elements.

5. The organic electroluminescence display device according to claim 4 ,

wherein the curved line is a curved line capable of being approximated to a part of an ellipse, a parabola, or a hyperbola.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 30, 2018
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.; JAPAN DISPLAY INC.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 046988/0801 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS Recorded Oct 14, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027063/0019 →
MERGER Recorded Oct 14, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027063/0139 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 5, 2007
From: MATSUDATE, NORIHARU; OOKAWARA, TAKESHI; KAJIYAMA, KENTA
To: HITACHI DISPLAYS, LTD.
Reel/Frame 019007/0168 →
Priority Claims (1)
JP 2006-051282 · Feb 27, 2006 · national
Continuity (1)
Related Publication 20070200494A1 · Aug 30, 2007