Co-processable photoimageable silver and corbon nanotube compositions and method for field emission devices
View Patent ↗Described herein are methods of manufacturing an electrode and emitter in a field emission device, and devices formed from the methods. Compositions useful for the manufacture of an electrode and emitter in a field emission device are also described.
1. A method of manufacturing an electrode and an emitter in a field emission device, comprising the steps of:
(a) printing a photoimageable conductive composition on a substrate,
(b) printing a photoimageable carbon nanotube (CNT) composition on the conductive composition, wherein the photoimageable CNT composition comprises CNT, acrylate monomer/oligomer blend, Trimethylolpropane ethoxy triacrylate, 2-methyl-1-[-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone and 2,4-diethyl-9H-thioxanthen-9-one,
(c) exposing the printed substrate to UV light,
(d) developing the exposed substrate, and
(e) firing the developed substrate.
2. The method of claim 1 , wherein the 2,4-diethyl-9H-thioxanthen-9-one is 1 to 7 wt % of the CNT paste, the 2-methyl-1-[-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone is 2 to 14 wt % of the CNT paste.
3. The method of claim 2 , wherein the ratio of 2-methyl-1-[-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone to 2,4-diethyl-9H-thioxanthen-9-one is 2, 4, or between 2 and 4.
4. An electrode and an emitter in a field emission device made by the method of claim 1 .
5. A flat panel display comprising the field emission device of claim 4 .
6. A photoimageable CNT composition comprising CNT, acrylate monomer/oligomer blend, Trimethylolpropane ethoxy triacrylate, 2,4-diethyl-9H-thioxanthen-9-one, and 2-methyl-1-[-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone, wherein the 2,4-diethyl-9H-thioxanthen-9-one is 1 to 7 wt % of the CNT paste, the 2-methyl-1-[-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone is 2 to 14 wt % of the CNT paste.
7. The composition of claim 6 , wherein the ratio of 2-methyl-1-[-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone to 2,4-diethyl-9H-thioxanthen-9-one is 2, 4, or between 2 and 4.
8. The composition of claim 6 , wherein the CNT is 0.01 wt % to about 2 wt % of the total weight of solids in the paste.
9. The composition of claim 6 , wherein the composition further comprises metal resinates.
10. The composition of claim 9 , wherein the metal resinates are 1.5 to 4 wt % of the total weight of the solids in the paste.
11. A method of manufacturing an electrode and an emitter in a field emission device, comprising the steps of:
(a) printing a photoimageable conductive composition on a substrate,
(b) exposing the printed substrate to UV light,
(c) printing a photoimageable CNT composition on the conductive composition, wherein the photoimageable CNT composition comprises CNT, acrylate monomer/oligomer blend, Trimethylolpropane ethoxy triacrylate, 2-methyl-1-[-(methylthio)phenyl-]-2-(4-morpholinyl)-1-propanone and 2,4-diethyl-9H-thioxanthen-9-one,
(d) exposing the printed substrate to UV light,
(e) developing the exposed substrate, and
(f) firing the developed substrate.
12. An electrode and an emitter in a field emission device made by the method of claim 11 .
13. A flat panel display comprising the field emission device of claim 12 .