Screen Printable Dielectric for Field Emission Displays

Abstract

A system of an insulating Bi2O3‐based frit and a conductive SnO2:Sb has been developed for printing and firing on glass substrates. Resistivity can be progressively decreased from >200 GΩ to the megaohm region by adding micron size SnO2:Sb in the thick film formulation. More SnO2:Sb is required for a given resistivity when alumina is added as a filler, and resistivity is dependent on alumina particle size. Controllably reducing resistivity of a dielectric is useful in field emission display applications to eliminate charging between emitter lines and to function as a ballast resistor layer.

Review of Bi2O3 based glasses for electronics and related applications

“…Development should be concentrated on new materials which reduce or altogether avoid their use, as has already been initiated for resistors. 166,512 On the other hand, the price of Bi can be a factor in high volume and very cost sensitive architectural and automotive applications, 47 so further developments to reduce its use in these sectors are likely.…”

“…For TF electronics, the very strong increase in prices of all noble metals (Ag, Pd, Pt, Ru) in recent times533 is therefore a much more pressing issue for conductor and resistor materials. Development should be concentrated on new materials which reduce or altogether avoid their use, as has already been initiated for resistors 166,512 On the other hand, the price of Bi can be a factor in high volume and very cost sensitive architectural and automotive applications,47 so further developments to reduce its use in these sectors are likely.…”

“…This is brought about by a suitable reducing agent, usually boron. Another base metal conductive filler successfully investigated with bismuth glasses is SnO 2 /Sb,166 which seems, however, more suitable for higher ranges of surface resistance (>100 kΩ), in line with the semiconductive properties of this filler.…”

“…Representative materials/fillers used in conjunction with glass frits Conducting oxide Resistors: conductive phase61,62,156 RuO 2 , IrO 2 ; 157 (Pb,Bi,…) 2 Ru 2 O 72y , (Ca,Sr,Ba)RuO 3 ; 155 SnO 2 :Sb166 …”

Simulation of Charge and Mass Distributions of Indium Droplets Created by Field Emission

“…Field-ion emission with liquid metal was examined initially by Tsong and Müller in the 1960's [5]. Applications of this technology have proven to be numerous, including realms such as: electron microscopy [6], data displays [7], carbon nanotube fluorescence [8], ink jets [9] and thermoelectric coolers [10]. However, a significant possibility for the use of the field emission process to produce thrust in space had been overlooked.…”