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Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, organic EL lighting, and manufacturing method for organic electroluminescent element

專利號
US12133453B2
公開日期
2024-10-29
申請人
Mitsubishi Chemical Corporation（JP Tokyo）
發(fā)明人
Yanjun Li; Tomokazu Umemoto; Hideki Gorohmaru; Koichiro Iida; Kouji Adachi
IPC分類
H01L51/50; C08G73/02; C09K11/06; H10K85/10; H10K50/11; H10K50/15; H10K50/17; H10K71/00; H10K71/12; H10K85/60
技術領域
group,ring,polymer,aromatic,preferably,formula,layer,or,compound,in
地域： Tokyo

摘要

Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer. The polymer contains a repeating unit represented by the following Formula (1) or a repeating unit represented by the following Formula (2) (wherein, Ar1 and Ar2 each represent an aromatic hydrocarbon group optionally having a substituent, or an aromatic heterocyclic group optionally having a substituent; X represents —C(R7)(R8)—, —N(R9)—, or —C(R11)(R12)—C(R13)(R14)—; R1 and R2 as well as R3 and R6 each independently represent an alkyl group optionally having a substituent; R4 and R5 each independently represent an alkyl group optionally having a substituent, an alkoxy group optionally having a substituent, or an aralkyl group optionally having a substituent; and R7 to R9 and R11 to R14 each independently represent hydrogen, an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, or an aromatic hydrocarbon group optionally having a substituent).

說明書

Further, in a layer formed by a wet film-forming method using a composition for an organic electroluminescent element which contains the polymer according to one embodiment of the present invention, cracking and the like are inhibited, and the layer is flat. Consequently, the organic electroluminescent element of the present invention which includes this layer has a high brightness and a long working life.

The polymer according to one embodiment of the present invention has excellent electrochemical stability; therefore, an element that includes a layer formed from this polymer is considered to be applicable to flat panel displays (e.g., flat panel displays for OA computers and wall-mounted televisions), vehicle on-board display devices, cell phone displays, light sources utilizing the features of a planar light emitter (e.g., light sources of copying machines, and backlight sources of liquid-crystal displays and instruments), sign boards, and marker lamps, and thus has a great technical value.

BRIEF DESCRIPTION OF THE DRAWING

The FIGURE is a schematic cross-sectional view illustrating a structural example of the organic electroluminescent element of the present invention.

 DESCRIPTION OF EMBODIMENTS

權利要求

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