Multiple digit display device and method of manufacturing same

Claim 1

A method of forming a cathode substrate for a multiple-digit display device, in which said cathode substrate including cathodes is arranged opposite to a plate including anodes, comprising the steps of: a. shaping a pasty composition comprising a dielectric material, a binder and a solvent into a shett form having a predetermined thickness and size; b. drying the sheet to obtain an unsintered dielectric sheet; c. multilevel printing, on said unsintered dielectric sheet, a plurality of sets of cathodes for respective digits, a plurality of cathode terminals for the corresponding cathodes between said cathode sets, a plurality of wires for the connections of the corresponding cathodes, between said cathode sets, to said cathode terminals, and a plurality of dielectric layers to provide an unsintered multilayer cathode substrate; and d. sintering said unsintered multilayer cathode substrate to provide a cathode substrate.

Claim 2

A method of forming a cathode substrate for a multiple-digit display device, in which said cathode substrate including cathodes is arranged opposite to a plate including anodes, comprising the steps of: a. shaping a pasty composition comprising a dielectric material, a binder and a solvent into a shett form having a predetermined thickness and size; b. drying the sheet to obtain an unsintered dielectric sheet; c. multilevel printing, on said unsintered dielectric sheet, a plurality of sets of cathodes for respective digits, a plurality of cathode terminals for the corresponding cathodes between said cathode sets, a plurality of wires for the connections of the corresponding cathodes, between said cathode sets, to said cathode terminals, and a plurality of dielectric layers to provide an unsintered multilayer cathode substrate; and d. sintering said unsintered multilayer cathode substrate to provide a cathode substrate.

Claim 4

A method of manufacturing a multiple-digit gaseous discharge display device, comprising the steps of: i. preparing a cathode substrate by a. shaping a pasty composition comprising a dielectric material, a binder and a solvent into a sheet form having a predetermined thickness and size, b. drying the sheet to obtain an unsintered dielectric sheet, c. multilevel printing, on said unsintered dielectric sheet, a plurality of sets of cathodes for respective digits, a plurality of cathode terminals for the corresponding cathodes between said cathode sets, a plurality of wires for the connection of the corresponding cathodes between said cathode sets to said cathode terminals, and a plurality of dielectric layers to provide an unsintered multilayer cathode substrate, and d. sintering said unsintered multilayer cathode substrate; ii. locating, on said cathode substrate, a partition plate having a plurality of spaced openings corresponding individually to the display sections of said cathode substrate including respectively said cathode sets therein so as to define respective discharge spaces; iii. locating, on said partition plate, a front plate which is transparent at least at those portions opposite to the respective display sections and in which a plurality of spaced transparent anodes are formed on the inner surface of said transparent portions; iv. sealing gastight the outer periphery of the laminate structure consisting of said cathode substrate, said partition plate and said front plate; and v. evacuating said laminate structure and introducing a discharge medium into said discharge spaces.

Claim 5

A method of manufacturing a multiple-digit gaseous discharge display device, comprising the steps of: i. preparing a cathode substrate by a. shaping a pasty composition comprising a dielectric material, a binder and a solvent into a sheet form having a predetermined thickness and size, b. drying the sheet to obtain an unsintered dielectric sheet, c. multilevel printing, on said unsintered dielectric sheet, a plurality of sets of cathodes for respective digits, a plurality of cathode terminals for the corresponding cathodes between said cathode sets, a plurality of wires for the connection of the corresponding cathodes between said cathode sets to said cathode terminals, and a plurality of dielectric layers to provide an unsintered multilayer cathode substrate, and d. sintering said unsintered multilayer cathode substrate; ii. locating, on said cathode substrate, a partition plate having a plurality of spaced openings corresponding individually to the display sections of said cathode substrate including respectively said cathode sets therein so as to define respective discharge spaces; iii. locating, on said partition plate, a front plate which is transparent at least at those portions opposite to the respective display sections and in which a plurality of spaced transparent anodes are formed on the inner surface of said transparent portions; iv. sealing gastight the outer periphery of the laminate structure consisting of said cathode substrate, said partition plate and said front plate; and v. evacuating said laminate structure and introducing a discharge medium into said discharge spaces.

Claim 12

A method of manufacturing a multiple-digit gaseous discharge display device comprising the steps of: a. forming a cathode substrate by a1. multilevel-printing, on an unsintered dielectric sheet, a plurality of sets of cathodes for respective digits to be included in said display device, a plurality of cathode terminals to be connected to respective cathodes of said sets, a plurality of wires for interconnecting said cathode terminals to said cathodes, and a plurality of unsintered dielectric layers, to thereby provide an unsintered multilayer cathode structure; and a2. sintering said unsintered multilayer cathode structure to provide a sintered cathode substrate; b. locating, on said cathode substrate, a partition plate having a plurality of spaced openings corresponding individually to the display sections of said cathode substrate including respectively said cathode sets therein so as to define respective discharge spaces; c. locating, on said partition plate, a front plate which is transparent at least at those portions opposite to the respective display sections and in which a plurality of spaced transparent anodes are formed on the inner surface of said transparent portions; d. sealing gastight the outer periphery of the laminate structure consisting of said cathode substrate, said partition plate and said front plate; and e. evacuating said laminate structure and introducing a discharge medium into said discharge spaces.

Claim 13

A method of manufacturing a multiple-digit gaseous discharge display device comprising the steps of: a. forming a cathode substrate by a1. multilevel-printing, on an unsintered dielectric sheet, a plurality of sets of cathodes for respective digits to be included in said display device, a plurality of cathode terminals to be connected to respective cathodes of said sets, a plurality of wires for interconnecting said cathode terminals to said cathodes, and a plurality of unsintered dielectric layers, to thereby provide an unsintered multilayer cathode structure; and a2. sintering said unsintered multilayer cathode structure to provide a sintered cathode substrate; b. locating, on said cathode substrate, a partition plate having a plurality of spaced openings corresponding individually to the display sections of said cathode substrate including respectively said cathode sets therein so as to define respective discharge spaces; c. locating, on said partition plate, a front plate which is transparent at least at those portions opposite to the respective display sections and in which a plurality of spaced transparent anodes are formed on the inner surface of said transparent portions; d. sealing gastight the outer periphery of the laminate structure consisting of said cathode substrate, said partition plate and said front plate; and e. evacuating said laminate structure and introducing a discharge medium into said discharge spaces.

Claim 15

A method of manufacturing a multiple-digit display device, comprising the steps of: forming, a cathode substrate by multilevel printing, on a dielectric substrate through dielectric layers, a plurality of sets of cathodes of predetermined pattern constituting a plurality of display sections respectively and wires for said cathodes; disposing, on said cathode substrate, a partition plate having a plurality of spaced openings corresponding individually to said display sections so as to define the respective discharge spaces; disposing, on said partition plate, a front plate which is transparent at least at those portions opposite to the respective display sections and in which a plurality of spaced transparent anodes are formed on the inner surface of said transparent portions; sealing gastight the outer periphery of the laminate structure consisting of cathode substrate, said partition plate and said front plate; evacuating said laminate structure and introducing a discharge medium into said discharge spaces; and wherein said dielectric substrate and said dielectric layers are initially unsintered and are simultaneously sintered before the evacuation of said laminate structure.

Claim 16

A method of manufacturing a multiple-digit display device, comprising the steps of: forming, a cathode substrate by multilevel printing, on a dielectric substrate through dielectric layers, a plurality of sets of cathodes of predetermined pattern constituting a plurality of display sections respectively and wires for said cathodes; disposing, on said cathode substrate, a partition plate having a plurality of spaced openings corresponding individually to said display sections so as to define the respective discharge spaces; disposing, on said partition plate, a front plate which is transparent at least at those portions opposite to the respective display sections and in which a plurality of spaced transparent anodes are formed on the inner surface of said transparent portions; sealing gastight the outer periphery of the laminate structure consisting of cathode substrate, said partition plate and said front plate; evacuating said laminate structure and introducing a discharge medium into said discharge spaces; and wherein said dielectric substrate and said dielectric layers are initially unsintered and are simultaneously sintered before the evacuation of said laminate structure.