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Devices, structures, materials and methods for vertical light emitting transistors and light emitting displays

專利號
US11177465B2
公開日期
2021-11-16
申請人
Atom H2O, LLC(US CA Escondido)
發(fā)明人
Huaping Li
IPC分類
H01L33/00; H01L51/52; H01L51/56; H01L51/05; H01L27/15; H01L27/32; H01L33/06; H01L33/24; H01L33/28; H01L33/30; H01L33/32; H01L33/34; H01L33/40; H01L33/52; H01L51/00; H01L33/08
技術(shù)領(lǐng)域
nw,ag,vplets,electrode,conductive,electrodes,porous,emitting,dielectric,leps
地域: CA CA Escondido

摘要

Devices, structures, materials and methods for vertical light emitting transistors (VLETs) and light emitting displays (LEDs) are provided. In particular, architectures for vertical polymer light emitting transistors (VPLETs) for active matrix organic light emitting displays (AMOLEDs) and AMOLEDs incorporating such VPLETs are described. Porous conductive transparent electrodes (such as from nanowires (NW)) alone or in combination with conjugated light emitting polymers (LEPs) and dielectric materials are utilized in forming organic light emitting transistors (OLETs). Combinations of thin films of ionic gels, LEDs, porous conductive electrodes and relevant substrates and gates are utilized to construct LETs, including singly and doubly gated VPLETs. In addition, printing processes are utilized to deposit layers of one or more of porous conductive electrodes, LEDs, and dielectric materials on various substrates to construct LETs, including singly and doubly gated VPLETs.

說明書

In still yet other embodiments, at least one of the drain, source, or gate electrodes comprise an electrode material selected from graphene sheets, doped Si, ZTO, ITO, Au, Al, Cu, Ni, Mo, Cr, Ag, metal nanowires, metal plate, metal meshes, metal grids, holey copper, holey graphene, conductive polymers, and a low coverage network of a plurality of nanowires.

In still yet other embodiments, the at least one conductive porous electrode is formed from a plurality of nanowires formed into one of the group of a random or patterned network of a plurality of metal or graphene nanowires, a nanowire metal mesh, a nanowire grid, and a nanowire network encased within an elastomeric material. In some such embodiments the plurality of nanowires are formed from a plurality of metal nanowires selected from Ag, Au and Cu having a diameter less than about 200 nm and a length greater than about 1 micron, and having a surface coverage less than 10%, a sheet resistance less than 100Ω/sq and a transmission greater than 75%.

Additional embodiments and features are set forth in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the specification or may be learned by the practice of the invention. A further understanding of the nature and advantages of the present invention may be realized by reference to the remaining portions of the specification and the drawings, which forms a part of this disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The description will be more fully understood with reference to the following figures and data graphs, which are presented as exemplary embodiments of the invention and should not be construed as a complete recitation of the scope of the invention, wherein:

權(quán)利要求

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