Method of manufacturing an electro-optical device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Mayumi Mizukami, Toshimitsu Konuma
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Abstract
An object of the invention is to reduce the manufacturing cost of EL display devices and electronic devices incorporating the EL display devices. An EL material is formed by printing in an active matrix EL display device. Relief printing or screen printing may be used as the method of printing. Manufacturing steps of the EL layer is therefore simplified and reduction of manufacturing cost is devised.
Claims36
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes,
- wherein the electroluminescence forming substance is printed selectively at each pixel.
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes.
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes and performing a heat treatment onto said electroluminescence forming substance.
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- forming a first electroluminescence material over the plurality of pixel electrodes;
- and
- forming a second electroluminescence material by a vapor deposition method over the first electroluminescence material,
- wherein said first electroluminescence material is formed by printing an electroluminescence forming substance.
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- forming a first electroluminescence material over the plurality of pixel electrodes;
- and
- forming a second electroluminescence material by a vapor deposition method over the first electroluminescence material,
- wherein said first electroluminescence material is formed by printing an electroluminescence forming substance and then performing a heat treatment onto the electroluminescence forming substance.
A method of manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes,
- wherein the electroluminescence forming substance is printed selectively at each pixel.
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes by a relief printing method.
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes,
- wherein the printing are performed by using an anilox roll having meshed grooves over a surface thereof, a doctor bar contacting with the meshed grooves of the anilox roll, and a printing roll having projections over a surface thereof.
A method for manufacturing an electroluminescence display device comprising the steps of:
- forming a plurality of semiconductor elements over a substrate;
- forming a plurality of pixel electrodes that are connected to each of the plurality of semiconductor elements;
- forming a first electroluminescence material over the plurality of pixel electrodes;
- and
- forming a second electroluminescence material by a vapor deposition method over the first electroluminescence material,
- wherein said first electroluminescence material is formed by printing an electroluminescence forming substance,
- wherein the printing are performed by using an anilox roll having meshed grooves over a surface thereof, a doctor bar contacting with the meshed grooves of the anilox roll, and a printing roll having projections over a surface thereof.
Dependencies are inferred from the claim text.