Invention Grant
- Patent Title: Electric field light emitting element
- Patent Title (中): 电场发光元件
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Application No.: US10574371Application Date: 2004-07-26
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Publication No.: US07855506B2Publication Date: 2010-12-21
- Inventor: Yoshifumi Kato , Norihito Takeuchi , Hiroyasu Kawauchi , Haruyuki Ishikawa , Hiroyuki Miura
- Applicant: Yoshifumi Kato , Norihito Takeuchi , Hiroyasu Kawauchi , Haruyuki Ishikawa , Hiroyuki Miura
- Applicant Address: JP Aichi-ken
- Assignee: Kabushiki Kaisha Toyota Jidoshokki
- Current Assignee: Kabushiki Kaisha Toyota Jidoshokki
- Current Assignee Address: JP Aichi-ken
- Agency: Locke Lord Bissell & Liddell LLP
- Priority: JP2003-344873 20031002
- International Application: PCT/JP2004/010631 WO 20040726
- International Announcement: WO2005/034586 WO 20050414
- Main IPC: H01J1/62
- IPC: H01J1/62

Abstract:
An organic EL element that is an electroluminescence element has at least an organic layer held between a pair of electrodes. At least an electrode made of material having a higher volume resistivity, of the pair of electrodes, is formed in a flat form. The organic layer is provided with a plurality of non-light emitting portions. The non-light emitting portions are provided so that a larger number of non-light emitting portions exist per unit area at a position physically closer to the position of a terminal portion at which the electrode made of material having the higher volume resistivity is connected to an external connection terminal. As a result, the level of current passing per unit area is substantially uniform at each position on the element.
Public/Granted literature
- US20070210700A1 Electric Field Light Emitting Element Public/Granted day:2007-09-13
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