Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2006-09-05
2006-09-05
Garrett, Dawn L. (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C427S066000, C526S271000, C526S310000, C252S301160
Reexamination Certificate
active
07101630
ABSTRACT:
An organic electroluminescent device is provided which has a high degree of adhesion between an anode and a hole transport layer, the device emitting light of high luminance even when driven by low applied voltages. Copolymers useful in hole transport layers in organic electroluminescent devices are also provided. Methods of producing hole transport layers for organic electroluminescent devices which can emit light of high luminance even when driven by low applied voltages are also provided, the hole transport layers having high degrees of adhesion with anode. A copolymer comprises a monomer unit including in its structure an electron-donating N,N-diaryl-substituted amino group such as an N,N-diphenylaminophenyl group, or a group having an N,N-diaryl-substituted amino moiety, and a monomer unit having at least one functional group. Also, a hole transport layer, which has excellent thickness accuracy, has an extremely smooth surface, and is very thin, can be formed of this copolymer or a copolymer having the same hole transport functional group. An organic electroluminescent device, which emits light of high luminance even when driven by low applied voltages, can be obtained by using this hole transport layer.
REFERENCES:
patent: 4322487 (1982-03-01), Merrill et al.
patent: 4356429 (1982-10-01), Tang
patent: 9-255725 (1997-09-01), None
patent: 9-255774 (1997-09-01), None
patent: 2002-370310 (2002-12-01), None
patent: 2003-142272 (2003-05-01), None
C.W. Tang, et al., Applied Physics Letters, 1987, 51(12), pp. 913-915, published on Sep. 21,1987.
Junji Kido, Trends in Polymer Science (TRIP), 1994, vol. 2, No. 10, pp. 350-355, published in Oct. 1994.
Erika Bellmann et al., Chemistry of Materials, 1999, vol. 11, pp. 399-407, published on Jan. 21, 1999.
Armstrong Kratz Quintos Hanson & Brooks, LLP
Garrett Dawn L.
Kawamura Institute of Chemical Research
LandOfFree
Diarylamino group-containing copolymer, organic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diarylamino group-containing copolymer, organic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diarylamino group-containing copolymer, organic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3557815