Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hideomi Suzawa0
Ichiro Uehara0
Shunpei Yamazaki0
Date of Patent
April 7, 2009
0Patent Application Number
108277090
Date Filed
April 20, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
In an EL element having an anode, an insulating film (bump) formed on the anode, and an EL film and a cathode formed on the insulating film, each of a bottom end portion and a top end portion of the insulating film is formed so as to have a curved surface. The taper angle of a central portion of the insulating film is set within the range from 35° to 70°, thereby preventing the gradient of the film forming surface on which the EL film and the cathode are to be formed from being abruptly changed. On the thus-formed film forming surface, the EL film and the cathode can be formed so as to be uniform in thickness, so that occurrence of discontinuity in each of EL film and the cathode is prevented.
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