三极小型场发射显示器的半圆组阴栅结构优化制作

Optimization Fabrication for Semicircle-Group Cathode-Grid Structure with Triode Small-Sized Field Emission Display

对钠钙平板玻璃进行切割形成后封装面板。结合高效的丝网印刷技术,在后封装面板上制作了半圆组阴栅结构。烧结的银浆层用于形成导电电极组中的双长条电极,而固化的绝缘浆料则用于构成绝缘层。碳纳米管直接制备在长条电极的表面,呈现双半圆形状,用于进行电子发射。栅极则是固定在碳纳米管阴极的上方,栅极和阴极之间依靠栅极基底而相互隔离。测试结果表明,应用半圆组阴栅结构,能够进一步降低阴极-栅极之间的电容效应,提高碳纳米管的电子发射能力,并增强三极场发射显示器的驱动灵活性。以碳纳米管作为阴极材料,进行了三极结构小型场发射显示器的研制。该三极显示器具有良好的场致发射特性,高的发光亮度以及优良的发光图像均匀度,其开启场强约为2.12V/μm,且制作成本低廉。

Rear packaging face-plate was fabricated with the cut soda lime flat panel glass.With high effective screen-printing technique,the semicircle-group cathode-grid structure was developed on the rear packaging face-plate surface.The sintered silver slurry layer was used to form the double long-bar electrodes of the conducting electrode group in the semicircle-group cathode-grid structure,and the insulation layer was fabricated using the solidified insulation slurry.On the long-bar electrodes surface,the carbon nanotube cathodes with double semicircle shape were prepared,which was used to emit lots of electrons.The grid was fixed on carbon nanotube cathode of the rear packaging face-plate,and the grid substrate was adopted to separate the grid and the cathode.From the measure results,with the fabricated semicircle-group cathode-grid structure,the capacity effect between the cathode and the grid would be further reduced,the electron emission ability of carbon nanotube cathode could be improved,and the operation flexibility of whole field emission display prototype was also enhanced.Using carbon nanotube as cathode material,the triode structure small-sized field emission display prototype was fabricated,which possessed good field emission characteristics,high luminescence brightness and better luminescence image uniformity.The turn-on electric-field of fabricated triode field emission display prototype was approximate 2.12 V/μm,and the total fabrication cost was low.