Color changeable device

Patent metadata

Field	Value
Publication number	US-2016246151-A1
Application number	US-201615007844-A
Country	US
Kind code	A1
Filing date	Jan 27, 2016
Priority date	Feb 25, 2015
Publication date	Aug 25, 2016
Grant date	—

Abstract

Provided is a color changeable device which includes a first substrate and a second substrate that are spaced apart from each other, a first transparent electrode disposed on the first substrate, a second transparent electrode disposed on the second substrate, an electrochromic layer disposed between the first transparent electrode and the second transparent electrode, an organic layer disposed between the first transparent electrode and the electrochromic layer. The organic layer may include a hole injection layer or an electron injection layer. The organic layer may further include a hole transport layer or an electron transport layer.

First claim

What is claimed is:

1 . A color changeable device comprising:
a first substrate; a second substrate spaced apart from the first substrate; a first transparent electrode on the first substrate; a second transparent electrode on the second substrate; an electrochromic layer between the first transparent electrode and the second transparent electrode; and an organic layer between the first transparent electrode and the electrochromic layer, wherein the organic layer comprises a hole injection layer or an electron injection layer.

2 . The color changeable device of claim 1 , wherein the hole injection layer comprises poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS), poly(9-vinylcarbazole) (PVK), poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4′-(N-(4-sec-butylphenyl)diphenylamine)] (TFB), 4,4-bis[N-(1-naphthyl)-N-phenyl-amino]biphenyl (α-NPD), or N,N′-bis(3-methylphenyl)-N,N′-diphenyl(1,1′-biphenyl)-4,4′-diamine (TPD).

3 . The color changeable device of claim 2 , wherein the organic layer further comprises a hole transport layer.

4 . The color changeable device of claim 3 , wherein the hole transport layer comprises 4,4′,4″-tris[2-naphthyl(phenyl)amino] triphenylamine (2-TNATA), 4,4′,4″-tris(2-methylphenyl-phenylamino)triphenylamine (m-MTDATA), tris(1-phenylisoquinoline)iridium(III) (Ir(piq) 3 ), bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III) (Ir(piq) 2 (acac)), or 5,6,11,12-tetraphenyl naphthacene (rubrene).

5 . The color changeable device of claim 3 , wherein the hole injection layer and the hole transport layer are mixed to form a single layer.

6 . The color changeable device of claim 1 , wherein the electron injection layer comprises polyethylenimine ethoxylated (PEIE) or ZnO.

7 . The color changeable device of claim 6 , wherein the organic layer further comprises an electron transport layer.

8 . The color changeable device of claim 7 , wherein the electron transport layer comprises tris-(8-hydroxyquinoline)aluminum (Alq3), 2,2,2″-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) (TPBi), 2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene (BBOT), 2-(4-biphenylyl)-5-phenyl-1,3,4-oxadiazole (PBD), (3-(s)-[(benzyloxycarbonyl)methyl]-1,4-dioxane-2,5-dione (BMD), Ir(piq) 3 , Ir(piq) 2 (acac), or rubrene.

9 . The color changeable device of claim 7 , wherein the electron injection layer and the electron transport layer are mixed to form a single layer.

10 . The color changeable device of claim 1 , wherein the electrochromic layer comprises WO 3 or PEDOT:PSS.

11 . The color changeable device of claim 1 , wherein the first transparent electrode and the second transparent electrode comprise aluminum (Al), TiN, indium tin oxide (ITO), indium zinc oxide (IZO), or graphene.

12 . The color changeable device of claim 1 , wherein the first substrate and the second substrate are flexible material substrates.

13 . The color changeable device of claim 12 , wherein the flexible material substrate comprises polyethylene terephthalate (PET), polycarbonate (PC), or polyethylene naphthalate (PEN).

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Oh Ji-Young
• Koo Jae Bon
• Kim Joo Yeon
• Na Bock Soon
• Park Chan Woo
• Lee Sang Seok
• Jung Soon-Won
• Cho Seong-Mok
• Chu Hye Yong

Classifications

• G02F1/155 Primary

  Electrodes · CPC title

• G02F2001/1502

  complementary cell · CPC title

• G02F2001/164

  the electrolyte is made of polymers · CPC title

• G02F1/153 Primary

  Constructional details · CPC title