Functional material and method for preparing the same, touch structure and touch display device

Patent metadata

Field	Value
Publication number	US-2016251544-A1
Application number	US-201414646099-A
Country	US
Kind code	A1
Filing date	Nov 21, 2014
Priority date	Jul 29, 2014
Publication date	Sep 1, 2016
Grant date	—

Abstract

The present invention provides a functional material, its preparation method, touch structures and touch display devices, which can solve the pollution problem in current touch display devices. The functional material includes an inorganic mixed powder with a modified layer, the inorganic mixed powder comprising boron oxide, sodium oxide, lithium oxide, zirconium oxide, aluminum oxide, zinc oxide, titanium oxide, silicon dioxide, calcium oxide, silver complexes, silver phosphate, silver nitrate, tourmaline, silver thiosulfate, carbon nanotubes, aluminum sulfate, manganese, manganese oxide, iron, iron oxide, cobalt, cobalt oxide, nickel, nickel oxide, chromium, chromium oxide, copper, copper oxide, magnesium oxide, boron carbide, silicon carbide, titanium carbide, zirconium carbide, tantalum carbide, molybdenum carbide, boron nitride, chromium nitride, titanium nitride, zirconium nitride, aluminum nitride, chromium boride, Cr 3 B 4 , titanium boride, zirconium boride, tungsten disilicide, and titanium disilicide; the modified layer being generated by the reaction of a dianhydride and a diamine.

First claim

1 . A functional material comprising an inorganic mixed powder having a modified layer on its surface, wherein the inorganic mixed powder comprises a primary ingredient and a secondary ingredient;
the primary ingredient consists of boron oxide, sodium oxide, lithium oxide, and zirconium oxide; the secondary ingredient includes any one or more of aluminum oxide, zinc oxide, titanium oxide, silicon dioxide, calcium oxide, silver complexes, silver phosphate, silver nitrate, tourmaline, silver thiosulfate, carbon nanotubes, aluminum sulfate, manganese, manganese oxide, iron, iron oxide, cobalt, cobalt oxide, nickel, nickel oxide, chromium, chromium oxide, copper, copper oxide, magnesium oxide, boron carbide, silicon carbide, titanium carbide, zirconium carbide, tantalum carbide, molybdenum carbide, boron nitride, chromium nitride, titanium nitride, zirconium nitride, aluminum nitride, chromium boride, Cr 3 B 4 , titanium boride, zirconium boride, tungsten disilicide, and titanium disilicide; and the modified layer is generated by reaction of a dianhydride and a diamine.

2 . The functional material according to claim 1 , wherein the molar ratio of the dianhydride to the diamine for generating the modified layer is from 0.85:1 to 1.05:1.

3 . The functional material according to claim 2 , wherein the molar ratio of the dianhydride to the diamine for generating the modified layer is from 0.92:1 to 1.05:1.

4 . The functional material according to claim 1 , wherein the dianhydride for generating the modified layer contains at least one phenyl group, and
the diamine for generating the modified layer contains at least one phenyl ring or at least one non-phenyl six-membered carbocyclic ring.

5 . The functional material according to claim 4 , wherein
the dianhydride for generating the modified layer is selected from any one of pyromellitic dianhydride, trimellitic anhydride, benzophenone dianhydride, biphenyl dianhydride, diphenyl ether dianhydride, and 4,4′-(Hexafluoroisopropylidene)diphthalic anhydride; the diamine for generating the modified layer is selected from any one of 3-amino-benzylamine, 2,2′-difluoro-4,4′-(9-fluorenylideneidene)diphenylamine, 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane, hexahydro-m-xylylene diamine, 1,4-bis(aminomethyl)cyclohexane, 2,2-bis[4-(4-amino-phenoxy)phenyl]hexafluoropropane, 2,2-bis(3-amino-4-methylphenyl)hexafluoropropane, 2,2-bis(3-aminophenyl)hexafluoropropane, 2,2-bis(4-aminophenyl)hexafluoropropane, 2,7-diamino-fluorene, m-xylylenediamine, and 4,4′-methylene bis(2-ethyl-6-methylaniline).

6 . The functional material according to claim 1 wherein,
the inorganic mixed powder has a particle diameter in a range from 1 to 5000 nm.

7 . A method for preparing the functional material according to claim 1 , comprising:
mixing the inorganic mixed powder, the dianhydride, and the diamine with an initiator and a solvent uniformly; and heating to react the dianhydride with the diamine to form the modified layer on the surface of the inorganic mixed powder.

8 . The method for preparing the functional material according to claim 7 , wherein,
the mass ratio of the inorganic mixed powder to the substance generated from the reaction of the dianhydride and the diamine is from 20:1 to 1:1.

9 . The method for preparing the functional material according to claim 7 , wherein,
the initiator is any one of azobisisobutyronitrile, 2,2′-azobis(2,4-dimethylvaleronitrile), dimethyl azobisisobutyrate, and azobisisovaleronitrile.

10 . The method for preparing the functional material according to claim 7 , wherein the heating is carried out in two steps:
heating at a temperature of 35 to 70° C. for 20 to 40 min; and heating at a temperature of 70 to 100° C. for 20 to 40 min.

11 . A touch structure comprising a touchpad for touching,
wherein a surface film layer containing the functional material according to claim 1 is provided outside the touchpad.

12 . The touch structure according to claim 11 , wherein,
the thickness of the surface film layer is from 50 to 1000 nm, wherein the mass percentage of the functional material in the surface film layer is from 0.1% to 10%.

13 . The touch structure according to claim 12 , wherein,
the mass percentage of the functional material in the surface film layer is from 0.5% to 5%.

14 . The touch structure according to claim 11 , further comprising:
a cover plate provided outside the touchpad, wherein the surface film layer is disposed outside the cover plate or between the touchpad and the cover plate.

15 . The touch structure according to claim 11 , wherein the touch structure is used in a touch display.

16 . The touch structure according to claim 12 , wherein
the touch structure is used in a touch display.

17 . The functional material according to claim 2 , wherein,
the inorganic mixed powder has a particle diameter in a range from 1 to 5000 nm.

18 . The functional material according to claim 3 , wherein,
the inorganic mixed powder has a particle diameter in a range from 1 to 5000 nm.

19 . The functional material according to claim 4 , wherein,
the inorganic mixed powder has a particle diameter in a range from 1 to 5000 nm.

20 . The functional material according to claim 5 , wherein,
the inorganic mixed powder has a particle diameter in a range from 1 to 5000 nm.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd

Inventors

• Yang Jiuxia
• Bai Feng
• Feng Hongbo

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• C09C1/34

  Compounds of chromium {(C09C1/0009, C09C1/0015, C09C1/0078, C09C1/08, C09C1/20 take precedence)} · CPC title

• C08K2003/2203

  of lithium · CPC title

• C08K9/10

  Encapsulated ingredients · CPC title

• C09C3/10

  Treatment with macromolecular organic compounds {(C09C3/006 takes precedence)} · CPC title