The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 2007
Filed:
May. 23, 2006
Hajime Murakami, Tokyo, JP;
Yoshiro Mikami, Tokyo, JP;
Etsuko Nishimura, Tokyo, JP;
Shingo Ishihara, Tokyo, JP;
Masao Shimizu, Tokyo, JP;
Kenichi Onisawa, Tokyo, JP;
Hajime Murakami, Tokyo, JP;
Yoshiro Mikami, Tokyo, JP;
Etsuko Nishimura, Tokyo, JP;
Shingo Ishihara, Tokyo, JP;
Masao Shimizu, Tokyo, JP;
Kenichi Onisawa, Tokyo, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. Two kinds of the OLEDs are provided. One is an OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Another comprises a region of the LE layer formed on an electrode of capacitor connected to the TFTs to control the light-emitting element. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.