英语论文网

Abstract
The formation of many carbon nanotube (CNT) tips with smalldiameter on the surface of 留学生论文代写thick CNTs was investigated toimprove the field-emission uniformity of a CNT emitter. A CNTlayer was first grown on a metal substrate by thermal-chemicalvapor deposition (CVD). CNTs in the layer were multiwallednanotubes with diameter of 30 - 50 nm. A metal catalyst was thenvacuum-deposited on the CNT layer, and secondary thin CNTswith diameter of 3 - 10 nm were formed from the catalyst particlesattached to the surface of primary CNTs by thermal-CVD.The field emission from the CNT layer with the secondary CNTsshowed an improvement in the uniformity of the emission currentdistribution.The developed CNT emitter was applied to high-resolution CNTFED.The sub-pixel size was 0.2mm x 0.6mm.

1. Introduction
Carbon-nanotubes (CNTs) have been attractingconsiderable attention as field emitters because of their excellentproperties such as high aspect ratio, high mechanical strength, andhigh chemical stability. Experimental studies on CNT emitters forfield emission displays (FEDs) have been reported since1998.[1,2] The first practical high-luminance color CNT-FEDpanel was built in 1999.[3,4] It employed the triode-structure forx-y addressing. In 2000, we developed the CNT emitter withmoderately uniform emission distribution by thermal-CVD.[5,6]The CNTs grown on metal-electrode frames by thermal-CVDformed a web-like networked structure, and the outer diameter ofCNTs was ca.40 nm. This technology is also applicable to largearea(say 40 inch in diagonal) panels by arranging many metalframes on a glass substrate.In 2003-2004, we performed a prototype of color characterdisplay.[7-9] The phosphor line was 1mm-pitch. To realize highluminance, glass spacers with a thickness of 0.15mm and a heightof 3mm were installed on the each black matrix line. In 2005, wedeveloped the improved structure to realize high-resolution CNTFED.[10,11] The sub-pixel size was 0.2mm x 0.6mm.Field-emission cathodes, which can emit electronsuniformly at a lower applied voltage, are required to realize CNT CNTFEDsfor TV display application. To improve the emissioncharacteristic of the CNT layer grown on the metal electrode, notonly the technique for growing CNTs with smaller diameter butalso the surface treatment of the CNT layer by laser irradiationwere investigated.[10-13] Since CNTs with smaller diameterhave higher field concentration factors, it is possible to emitelectrons at a low voltage. Furthermore, the surface treatment ofthe CNT layer by laser irradiation, which increases CNT tips viathe cutting of CNTs, ishttps://www.51lunwen.org/liuxuelunwendx/ proved to be effective in improvinguniformity of electron emission distribution on the cathodesurface.

References
[1] S.Uemura, J.Yotani, T.Nagasako et.al, SID’98,1052(1998).
[2] Y.Saito, S.Uemura and K.Hamaguchi, Jpn. J. Appl. Phys. Vol37, 346 (1998).
[3] S.Uemura, J.Yotani, T.Nagasako, et.al, Euro Display ‘99, Late-news papers 93(1999).
[4] J.Yotani, S.Uemura, T.Nagasako, et.al,, IDW ‘99,971(1999).
[5] S.Uemura, J.Yotani, T.Nagasako, et.al, SID’00, 320(2000).
[6] S.Uemura, H.Murakami, J.Yotani, et.al,IDRC’00,398(2000).
[7] J.Yotani, S.Uemura, T.Nagasako, et.al,SID’03,918 (2003).
[8] J.Yotani, S.Uemura, T.Nagasako, et.al,IDW’03,1719 (2003).
[9] J.Yotani, S.Uemura, T.Nagasako, et.al,SID’04, 828 (2004).
[10] J.Yo本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。