IP Library Granted Patent US 7,553,208
Granted Patent B2
US 7,553,208 · App. 11/639,205 · Granted Jun 30, 2009

Manufacturing method of organic electroluminescence display device

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Quick Facts
Patent No.
US 7,553,208
App. No.
11/639,205
Granted
Jun 30, 2009
Kind
B2
Abstract

A manufacturing method of organic electroluminescence display device according to the present invention performs (1) a first step for forming a non-affinity region in a surface of an anode provided in each of pixels arranged on a glass substrate by exposing the glass substrate in a saturated vapor pressure of an organic solvent, (2) a second step for forming an affinity region in a central portion of the anode surface spaced from its edges by irradiating the central portion of the anode surface with ultraviolet light, and (3) a third step for forming polymer material layers which constitute an organic electroluminescent element in the each of the pixels in the affinity region by blowing off polymer material solutions onto the affinity region of the anode in the each of the pixels, in this order, to simplify entire steps in, to reduce cost for, and to improve productivity of the manufacturing process of the organic electroluminescence display device thereby.

Claims (7)

1. A method of manufacturing an organic electroluminescence display device, comprising:

(a) forming a lower electrode over a substrate;

(b) forming an organic hole injection layer over the lower electrode, after step (a);

(c) forming an organic light emitting layer over the organic hole injection layer, after step (b);

(d) forming an insulating layer functioning as a partition between neighboring pixels, after step (c);

(e) forming an electron injection layer over the organic hole injection layer and the insulating layer, after step (d); and

(f) forming a cathode on the electron injection layer, after step (e).

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 →
SECURITY AGREEMENT Recorded Jan 14, 2011
From: SENSORS FOR MEDICINE AND SCIENCE, INC.
To: NEW ENTERPRISE ASSOCIATES 10, LIMITED PARTNERSHIP
Reel/Frame 025644/0315 →