Active matrix display device using a printing method
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.
Claims64
A method for manufacturing an active matrix display device comprising:
- forming a plurality of switching elements comprising silicon over a substrate;
- forming an insulating film over the plurality of switching elements;
- forming a plurality of pixel electrodes over the insulating film;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes by using a roll in order to form a light emitting layer;
- and
- forming a counter electrode over the light emitting layer,
- wherein the light emitting layer and the counter electrode are continuously formed without opening to the air.
A method for manufacturing an active matrix display device comprising:
- forming a plurality of switching elements comprising silicon over a substrate;
- forming an insulating film over the plurality of switching elements;
- forming a plurality of pixel electrodes over the insulating film;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes by using a roll in order to form a light emitting layer;
- and
- forming a counter electrode over the light emitting layer,
- wherein the electroluminescence forming substance is printed selectively at each pixel, and
- wherein the light emitting layer and the counter electrode are continuously formed without opening to the air.
A method for manufacturing an active matrix display device comprising:
- forming a plurality of switching elements comprising silicon over a substrate;
- forming an insulating film over the plurality of switching elements;
- forming a plurality of pixel electrodes over the insulating film;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes by using a roll in order to form a light emitting layer;
- performing a heat treatment onto said electroluminescence forming substance;
- and
- forming a counter electrode over the light emitting layer,
- wherein the light emitting layer and the counter electrode are continuously formed without opening to the air.
A method for manufacturing an active matrix display device comprising:
- forming a plurality of switching elements comprising silicon over a substrate;
- forming an insulating film over the plurality of switching elements;
- forming a plurality of pixel electrodes over the insulating film;
- printing an electroluminescence forming substance over the plurality of pixel electrodes,
- wherein the printing is performed by using a roll.
A method for manufacturing an active matrix display device comprising:
- forming a plurality of switching elements over a substrate;
- forming an insulating film over the plurality of switching elements;
- forming a plurality of pixel electrodes over the insulating film;
- and
- printing an electroluminescence forming substance over the plurality of pixel electrodes,
- wherein the printing is 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 active matrix display device comprising:
- forming a plurality of electrodes arranged in a matrix form on an insulating surface;
- forming a plurality of light emitting layers selectively over the plurality of electrodes by printing using a roll in order to form a light emitting layer;
- and
- forming a counter electrode over the light emitting layer,
- wherein the light emitting layer and the counter electrode are continuously formed without opening to the air.
A method for manufacturing an active matrix display device comprising:
- forming a plurality of electrodes arranged in a matrix form on an insulating surface;
- and
- forming a plurality of light emitting layers selectively over the plurality of electrodes by printing,
- wherein the printing is 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 active matrix display device comprising:
- forming a plurality of electrodes arranged in a matrix form on an insulating surface;
- and
- forming a plurality of light emitting layers selectively over the plurality of electrodes by printing using a relief printing.
A method for manufacturing an active matrix display device comprising:
- forming a plurality of electrodes arranged in a matrix form on an insulating surface;
- and
- forming a plurality of light emitting layers selectively over the plurality of electrodes by printing,
- wherein the printing is performed by using a roll.
Dependencies are inferred from the claim text.