USPatentGranted
B2

Anthracene derivative, and light-emitting material, light-emitting element, light-emitting device, and electronic device using the same

Granted 2 Jul 2013 · 8 office actions

Assignee: Semiconductor Energy Laboratory

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Inventors: Satoshi Seo, Harue Osaka, Sachiko Kawakami, Nobuharu Ohsawa · Examiner: Jennifer A Chriss · AU 1786 · TC 1700

Life of the patent

3 dated events
⤢ drag to zoomJan 2009Jul 2009Jan 2010Jul 2010Jan 2011Jul 2011Jan 2012Jul 2012Jan 2013Jul 2013Prosecution
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Abstract

Novel anthracene derivatives, novel materials capable of blue light emission with high color purity, and a light-emitting element, a light-emitting device, and an electronic device using any of the novel materials. The anthracene derivative represented by general formula (1) is provided. With the anthracene derivative, a light-emitting element with high emission efficiency can be provided. With the anthracene derivative, a light-emitting element emitting blue light with high color purity can be provided. [structure] In the formula, A 1 represents a substituted or unsubstituted phenyl group, B 1 represents any of an alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted phenyl group, α represents any of a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyl-4,4′-diyl group, and R 1 to R 9 individually represent any of hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted phenyl group.

Claims

9 · 2 independent · depth 2
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9 granted claims

Classifications

8 codes
IPC · International Patent Classification
Section H — Electricity
  • H01L51/54
USPC · US Patent Classification
428/690546/18313/505313/506428/917313/504548/440

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File wrapper

Pendency
4.5 y
1,659 days filing → grant
Office actions
4
after a restriction
Responses
5
2 RCE
Interviews
1
examiner interview summaries
Examiner
Jennifer A Chriss
art unit 1786 · TC 1700
Citations: 28 back · 0 forward

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Priority chain

1 priority documents
›Priority documents — 1
TypeDocumentDate
related publicationUS 20090174321 A19 Jul 2009

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